Distributed Environment Online Monitoring System Based on SOA

Distributed Environment Online Monitoring System Based on SOA | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Distributed Environment Online Monitoring System Based on SOA Ru Li, Shancheng Chen This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-2704725/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Environmental contamination caused by energy extraction and processing is a persistent issue, and China’s environmental monitoring of mines is becoming increasingly rigorous as the 14th Five-Year Plan moves forward. This study proposes a distributed environmental online monitoring system to realize intelligent environmental monitoring in open-pit mines. The collection terminal utilizes PM2.5, PM10, temperature, and noise sensors for data collection. The hardware design employs an STM32 microcontroller as the control core. The communication design uses GPRS and RS-485 communication technologies to transmit data, and the software architecture utilizes a modular approach for data cleaning, data analysis, and data mining to achieve early warning and environmental quality evaluation in mining zones. The distributed environmental online monitoring system is tested in a mine, and the test data show the feasibility and effectiveness of the system. Good results on intelligently monitoring the environmental quality of the mine site are obtained. environmental online monitoring Internet of Things (IoT) SOA environmental early warning Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 1 Introduction As major energy sources, mining sites generate a large amount of particulate matter and noise while mining and processing energy, causing serious environmental pollution problems [ 1 – 4 ]. In line with China’s 14th Five-Year Plan, the country has incorporated ecological restoration and management of mining areas into its work, and people are becoming increasingly concerned about the environmental conditions of mining areas. Good mining environment is an important guarantee for maintaining the quality of the regional ecological environment, and environmental monitoring is the basis for managing the environment [ 5 – 7 ]. Thus, timely monitoring and early warning of the mining environment are necessary [ 8 ]. Currently, manual monitoring suffers from high costs, low efficiency, and many errors [ 9 , 10 ], and sensor monitoring suffers from low monitoring efficiency, inability to process and analyze data, and inability to assess and provide early warning of the environmental quality in mining areas [ 11 – 14 ]. Meanwhile, automated monitoring suffers from high equipment costs, low coverage, and lack of analysis and prediction capabilities [ 15 ]. In response to these problems, scholars at home and abroad have conducted extensive research, and most of them have adopted “3S” technology to make environmental monitoring intelligent, precise, and integrated. In China, Lv Baoqi et al. [ 16 ] and Wang Gengming et al. [ 17 ] conducted dynamic monitoring of mining environments by using remote sensing monitoring technology. Wang Junhua et al. [ 18 ] employed remote sensing and geographic information system technologies to investigate the ecological environment of mining areas. Zhu Hongxiu et al. [ 19 ] and Nie Huon et al. [ 20 ] utilized NB-IoT and the cloud platform environmental monitoring system to collect and process data through sensors and microprocessors; afterward, they applied communication technology to achieve remote environmental monitoring functions. In other countries, Song Wen et al. [ 21 ], Li Jun et al. [ 22 ], and Shuang Shuai et al. [ 23 ] used remote sensing to extract environmental factors for the prediction of the atmospheric environment in the mining sector. Li Jun et al. [ 24 ], Wu Zhenhua et al. [ 25 ], and Du Shouhang et al. [ 26 ] adopted opencast coal mines as the research object and used remote sensing technology to dynamically monitor the environmental conditions in mining areas. Jens Sondergaard et al. [ 27 ] utilized monitoring and websites to target specific sites and mines for environmental monitoring efforts and discussed spatial and temporal trends in mine pollution. However, the existing wireless environmental monitoring equipment and systems for open-pit mines have problems, such as independent monitoring and processing of multiple environmental parameters and weak comprehensive analysis capability [ 28 , 29 ]; hence, they cannot achieve all-around real-time monitoring of the entire mine area. Moreover, the collected monitoring information lacks continuity, so judging the trend of environmental changes in the mine area is challenging, and the difficulty of early warning of the environmental quality of the mine area is increased. With the continuous accumulation and increment of environmental monitoring data in mining areas, the requirements for smooth management and timeliness of monitoring data have further increased, the application volume of monitoring data analysis has also increased, and the centralized cloud computing architecture faces challenges, such as high latency, low coverage, and lagging data transmission [ 30 , 31 ]. Therefore, a highly accurate, real-time, distributed online environmental monitoring system (hereinafter referred to as “the system”) needs to be established for opencast mines. This study proposes a system design for developing an online monitoring system with data analysis and early warning functions. The system combines Internet of Things (IoT) and distributed application technologies for environmental monitoring. It is based on IoT technology and transmits monitoring data to a software platform through communication. The hardware design adopts the STM32 microcontroller as the core to control each sensor during the collection of environmental indicator data. Through GPRS and RS-485 communication methods, the environmental data from each monitoring point are uploaded to the software platform, and the software design uses the JavaEE development environment to clean and analyze the collected data and display the results and warning information in the system interface. The system is capable of real-time online monitoring of the environmental quality indicators of the mine area; automatic, real-time storage of data; analyzing the environmental quality of the entire mine area; providing early warnings; and realizing intelligent monitoring of the environmental quality of the mine area. 2 System Technical Route The distributed environmental online monitoring system is developed using the following processes: system architecture design, hardware design, communication design, software design, and deployment testing. This study summarizes the existing environmental online monitoring system by designing and developing a distributed environmental online monitoring system through IoT. First, the master control unit in the hardware device controls the sensors to collect environmental data. Second, the data are transmitted to the software platform server through a communication channel. Lastly, the environmental indicators of the environmental quality monitoring area in the server are processed and analyzed through big data analysis methods and environmental assessments; afterward, early warnings are provided. Through this technology route, the system can analyze and evaluate the data while measuring environmental factor data. Artificial intelligence algorithms are utilized to identify heavily polluted areas and evaluate the changes in environmental quality in the area by measuring the changes in environmental indicator data. The primary objective is to build a distributed environmental online monitoring system for open-pit mines and provide technical support for relevant departments and mining areas. The specific technology roadmap is shown in Fig. 1 . 3 Overall System Design 3.1 Overall system requirements. The system is required to collect and manage environmental indicators in mining areas and provide early environmental warning and technical support for government decision-making. The system is implemented through a combination of software and hardware and designed using a modular concept that separates each function into independent modules, thus making the system stable and facilitating the future expansion and extension of the system. The hardware design is based on the selection of different sensors for the environmental indicators, the development of online environmental monitoring equipment for mining areas, and the development of hardware equipment that can achieve accurate collection and real-time transmission of monitoring data. The software design makes up for the lack of computing resources and energy capacity of the environmental monitoring terminal equipment by using the system software platform and can realize the functions of data reception monitoring, data storage, data analysis, forecasting, and early warning. 3.2 System architecture. A distributed environmental online monitoring system is a collection of data and information collection, analysis, operation, and output services. The system is mainly composed of the following layers. (1) Equipment layer. The equipment layer provides the operating environment for the system hardware and software. (2) Network layer. The network layer provides the network environment in which the system communicates. (3) Data layer. The data layer includes data centers (e.g., cloud centers, real-time databases, and relational databases) and provides data storage, data dictionaries, unified data interaction, protocol parsing, and other capabilities. (4) Service layer. The service layer provides a visual display platform and a visual operation platform, and it is interfaced with the data layer for resource access and to provide the application layer with services, such as display environment, communication, and data access. (5) Application layer. The application layer provides direct access to monitoring system services, such as view data report, view historical data, data analysis, and environmental monitoring alert services. The system can be divided into three sub-modules, namely, hardware design, software design, and communication design. The system design diagram is shown in Fig. 2 . The hardware design mainly consists of a central control box, RS485 devices, and LED screens. The communication design consists of GPRS and RS-485 communication methods to ensure the smooth operation of the system. Meanwhile, the software design is developed in the JavaEE platform by using the Spring + VUE framework, and it consists of data reception, data storage, data analysis, forecasting, and early warning modules. 3.3 Hardware design. The collection and processing of environmental data are prerequisites for environmental monitoring and early warning. The hardware structure of the system consists of a central control box, RS485 equipment, and an LED screen. The central control box consists of the main control module, a sensor module, a relay module, and a power circuit module. The main control module is controlled by the STM32F103ZET6 chip, the sensor module controls each sensor to collect environmental indicator data, the relay module controls the opening and closing status of the whole hardware circuit, and the power circuit module provides power for the operation of the microcontroller. The main structure of the system equipment is shown in Fig. 3 , and the system hardware structure is shown in Fig. 4. (1) Central control box. The central control box contains the main control, sensor, relay, power control, and other modules. Main control module. As the core of the whole hardware device, the main control module is responsible for the control of the whole hardware device, the storage of data, and the sending of information to the software platform. The main control module adopts an STM32 microcontroller as the core. The STM32 microcontroller has low power consumption, high performance, low price, and good collaborative control capability [ 32 – 34 ]. The microcontroller integrates a clock circuit module, an analog-to-digital conversion module (ADC), an IIC bus module, a serial communication module (GPIO), and a power circuit module around the STM32 chip to form the core data collection components. A schematic of the STM32 chip is shown in Fig. 5 . The clock circuit module is used to record the data collection time, and the ADC module is used to convert the collected PM2.5 and PM10 analog signals into digital signals. The diagram of ADC is shown in Fig. 6 . The IIC bus module transfers the collected temperature and noise data to the STM32 chip, and its schematic is shown in Fig. 7 . The serial communication module is used for communication between serial ports, and its schematic is shown in Fig. 8 . Meanwhile, the power supply circuit module is used to provide the power required by the microcontroller, and its schematic is shown in Fig. 9 . The microcontroller controls the RS485 device for data acquisition. The data storage module caches environmental indicator data and transmits the collected information to the software platform through the communication channel in accordance with a predetermined program. Sensor module. The sensor module is one of the core components of the hardware design of the whole system. The selection of environmental indicator sensors should comply with national standard methods, and the sensors should have low power consumption, high reliability, and high measurement accuracy in consideration of the long-term operation and future maintenance of environmental online monitoring equipment [ 35 – 37 ]. The sensor module includes PM2.5, PM10, temperature, noise, and other sensors. The PM2.5 and PM10 sensors monitor PM2.5 and PM10 concentrations in the mine environment, respectively. The temperature sensor monitors the temperature in the mine environment, and the noise sensor monitors the amount of noise (in decibels) in the mine. The different sensors are distinguished and labeled with different pins in the STM32 microcontroller to ensure the collection, transmission, and analysis of data on environmental indicators in the mine area and to facilitate timely overhaul by maintenance personnel. Relay module. The relay module monitors the status between current and voltage signals in the central control box. It controls the opening and closing of the entire hardware equipment circuit to achieve a small current for controlling a large current [ 38 – 44 ]. Power control module. The power control module of the system hardware equipment is supplied by the battery pack installed inside the system and the charging part of the solar photovoltaic panel. The electrical energy generated by solar energy charges the battery pack, thus ensuring that the voltage output from the system power control module makes the system work normally and is more than enough to provide a stable power supply for the system. (2) RS485 equipment. Given that the system is designed to monitor several parameters related to the environmental quality of the mine, the main parameters, such as PM2.5, PM10, temperature, and noise, are selected as monitoring objects. The RS485 equipment includes PM2.5, PM10, noise, temperature, humidity, wind speed, wind direction, air pressure, and other monitoring equipment to be used for system expansion. (3) LED screen . While transmitting data to the software platform, the hardware device displays the current real-time data on the LED screen in the hardware device. For the collection of environmental indicator data, data collection nodes are formed through the multiple sensors of the sensor module in the STM32 microcontroller, followed by online burning of the program, initialization of the serial port and module to the STM32 microcontroller by means of USB connection from the PC side, and judging whether the environmental indicator data are collected or not. The environmental indicator data collected by the RS485 device can be sorted based on the type of parameters collected. The output signal of the sensor is divided into analog and digital signals. The analog signals collected by the PM2.5 and PM10 sensors are converted to digital signals by the ADC module; then, their values are read. The digital signals collected by the temperature and noise sensors are read directly via the serial or I/O ports, and the collected data are outputted to the IIC bus module.The flow chart of environmental indicator collection and transmission in hardware design is shown in Fig. 10 . 3.4 Communication design. The data collected by the system hardware are transmitted to the software platform via a communication module. The communication design of this system combines RS-485 GPRS communication to make the system communication overcome the drawbacks of complex networking and maintenance difficulties. The combination also has the advantages of reliability and real-time performance, thus creating a good remote monitoring and real-time information collection system. The communication design uses the STM32 chip in the hardware device to connect an external RS485 module and form a sub-monitoring system within a certain range and distance by using the RS485 FieldBus card. Information acquisition and control by this sub-system are completed by the microcontroller in the hardware device, which is connected to the GPRS wireless module through the serial port to realize communication with the system software platform and sensor collection in the hardware device. The microcontroller is connected to the GPRS wireless module through the serial port to communicate with the system software platform and transmit the environmental indicator data collected by the sensors in the hardware device. The system communication diagram is shown in Fig. 11 . (1) GPRS communication. GPRS is a wireless packet data exchange and transmission technology with a normal data transmission rate of 61.7 kB/s and a maximum capacity of 178.4 kB/s [ 45 ]. It improves the transmission rate and is inexpensive. After the hardware device has collected environmental indicator data, the data can be transmitted remotely and in real time by using GPRS [ 46 – 48 ], which transmits the data directly to the server side, that is, the software platform, where the user can view the real-time data via a PC or an app and store the acquired data information in the database of the system software platform. The GPRS communication method allows fast access to the software and can readily provide clear, real-time data to software platform users. Users can also grasp the environmental quality of the mine area in time in accordance with the real-time environmental index data. (2) RS-485 communication . RS-485 is a multi-transmitter standard with excellent interference suppression for signal transmission, low impedance, zero grounding problems, transmission distance of up to 1200 m, and transmission rate of up to 1 Mbps [ 49 ]. RS-485 communication is an open communication network that can be used as a link for intelligent devices [ 50 – 52 ]. The bus network nodes can be hooked up to RS-485 communication by using the standard Modbus RTU protocol and can be directly connected to a microcontroller. In an RS-485 communication system consisting of a PC and a microcontroller, node identification is achieved by setting different station addresses. Ordinary PCs generally do not carry an RS485 interface, so an RS-232C/RS-485 converter is used; for microcontrollers, TTL/RS-485 level conversion can be applied using the MAX485 chip. The schematic of the RS485 module is shown in Fig. 12 . 3.5 Software design. System software design refers to placing the environmental indicator data transmitted through the communication channel in the database of the software platform by using the development framework of Spring Boot + VUE on the JavaEE platform. It involves combining Redis (non-relational data) and MySQL (relational data) databases, adopting the B/S software architecture, using the idea of structured programming, and carrying out a top–down detailed procedure. The module structure is designed to develop applications, including environmental information sub-platform, forecast and early warning sub-platform, and business management sub-platform, whose functions include data reception, data processing, real-time display, comprehensive analysis, forecast, early warning, and visualization operations. The functional structure of the software platform is shown in Fig. 13 . (1) Environmental information sub-platform. The environmental information sub-platform includes the functions of real-time and historical data display. The real-time data display function means that after receiving the environmental indicator data transmitted to the software platform by each monitoring point through the communication channel, the environmental information sub-platform collects and processes the data then displays the environmental indicator information on the interface of the software platform so that users can enter the real-time monitoring data page to view the latest data on particle concentration, temperature, and noise in each monitoring point and monitoring equipment in the mine area. The data are displayed in a list in the user interface so that users can view the data by simply logging into their browser and mobile terminal. The data in the table can also be filtered by environmental indicator name, indicator range, date, and other relevant conditions and can be sorted by indicator size and date. The historical data display function means that while the environmental information sub-platform receives data, the collected data are saved to the database so that historical environmental information data can be displayed. This function allows the corresponding data to be queried by options, such as mine number, monitoring point number, equipment number, and date. This function can transform historical data tables into digital images, such as line graphs, to visually reflect the change patterns of PM2.5, PM10, and other indicators in the mine area within a certain period. (2) Forecasting and early-warning sub-platform. The forecasting and warning sub-platform is used to analyze environmental indicator data to understand the state of environmental quality in the mine area and to grasp the changes in environmental quality so that timely preventive measures can be applied. The forecasting and warning sub-platform further analyzes the data received and stored by the environmental information sub-platform by using multiple linear regression forecasting models. Through continuous monitoring of the mine area at multiple points, the environmental quality of each area of the mine is assessed. When the environmental indicators are predicted to exceed the safe range in the next period, corresponding early warning information is given. The forecast information can be displayed in the form of visual images in the mine diagram, and it includes information on mine monitoring points and alarm information, which can help users observe and understand the environmental status of the mine and facilitate timely prevention and control. The real-time forecasting and warning function in the software platform employs a multiple linear regression model for forecasting. The model can be expressed as Y = β 0 + β 1 X 1 + β 2 X 2 +⋯+ β n X n + ε , where Y is the dependent variable representing the environmental quality of the mine. The larger Y is, the worse the quality of the mine is. The smaller Y is, the better the quality of the mine is. X i ( i = 1,2,..., n ) represents the relevant indicators, n is the number of environmental indicators, β 0 represents the regression constant, β i refers to the regression coefficient, and ε is a random error term. The modeling steps are as follows: (i) data acquisition and transferring the environmental indicator data stored in the database to the module by calling the internal program of the software platform; (ii) cleaning and pre-processing the transferred data to deal with the residual and abnormal values in the data; (iii) calculating the corresponding regression coefficients and regression constants of the environmental indicators; (iv) substituting the calculated regression coefficients and regression constants into the prediction model to determine the prediction model function; and (v) prediction estimation and substituting the newly acquired data into the prediction model function to calculate the corresponding function value. If the function value is outside the safe range, an alarm message will be displayed in time on the visualization interface of the software platform. (3) Business management sub-platform. The business management sub-platform includes the mine area diagram, mine monitoring point management, mine monitoring equipment management, and personnel and authority management. Users can locate the geographical position of each device by viewing the mine’s schematic. The mine environmental monitoring points and monitoring equipment are deployed in accordance with national policies and the actual situation of the mine site and then entered into the software platform for monitoring point and monitoring equipment management. Users can monitor the operational status of the equipment at the mine site in real time through the equipment management function. When monitoring equipment failure is detected, users receive abnormality reports of the relevant equipment so that the cause of the failure can be determined, and maintenance personnel can be dispatched promptly. Personnel and authority management can further assist in the intelligent construction of the mine. 4 Experimental Investigation To verify the effectiveness of the distributed environmental online monitoring system designed in this study and test the comprehensive performance of the system, several monitoring points were deployed in a mine. The hardware equipment of the system was installed, and the system was tested. Given that the system mainly focuses on the acquisition, transmission, processing, and analysis of main environmental indicators, such as PM2.5, PM10, temperature, and noise, and considering that various possible factors can affect the performance of the system, the data at different time points were collected and analyzed accordingly to ensure the feasibility and effectiveness of the system. First, the system hardware equipment was used to collect environmental indicator data from the mine site. Second, the collected information is transmitted to the system software platform through the communication channel in accordance with the internal settings of the system hardware, and the data are saved to the database. Lastly, the system software platform functions are used to display the environmental information of the mine site and provide warnings when needed. The monitoring parameters obtained in the mine site are shown in Table 1 . The information on each monitoring point displayed in the interface of the software visualization platform is consistent with the actual measured values in the field. When the site environmental indicator parameters exceed the set values, the system issues an alarm command on the visualization interface, and the user receives the relevant alarm information so that relevant preventive measures can be implemented in time. The test results showed that the system is consistent with the actual situation in the mine and can provide technical support to mining enterprises and government departments for making decisions, improving the efficiency of environmental monitoring in the mine, and providing good early warning regarding the environmental conditions in the mine. Table 1 Distributed environmental online monitoring system’s environmental indicators data sheet. Monitoring points PM2.5/µm PM10/µm Temperature/°C Noise/dB Time 1 27 27 30.0 60.3 2022-11-7 16:03:42 2 182 202 32.0 63.8 2022-11-7 16:08:40 3 180 121 33.0 60.6 2022-11-7 16:13:37 4 222 251 34.1 62.0 2022-11-7 16:18:35 5 244 272 34.4 57.1 2022-11-7 16:23:33 6 337 337 34.7 61.8 2022-11-7 16:28:31 7 303 333 35.3 62.0 2022-11-7 16:33:28 8 86 128 35.5 60.8 2022-11-7 16:38:26 9 164 173 36.5 71.8 2022-11-7 16:43:24 10 265 252 37.4 59.1 2022-11-7 16:48:22 11 234 251 38.2 61.0 2022-11-7 16:53:20 12 246 235 38.2 65.1 2022-11-7 16:58:18 13 221 200 37.4 73.1 2022-11-7 17:03:16 14 132 110 37.1 70.5 2022-11-7 17:08:13 15 245 257 35.9 72.5 2022-11-7 17:13:11 16 385 419 36.0 67.7 2022-11-7 17:18:09 17 246 219 34.6 62.7 2022-11-7 17:23:07 18 207 198 34.7 58.4 2022-11-7 17:28:05 19 91 117 33.1 60.5 2022-11-7 17:33:03 20 230 233 33.5 53.8 2022-11-7 17:38:00 21 251 235 32.9 49.4 2022-11-7 17:42:58 22 214 163 32.7 58.7 2022-11-7 17:47:56 23 124 134 30.6 48.8 2022-11-7 17:52:54 24 86 114 34.5 57.9 2022-11-7 17:57:52 25 36 48 35.4 49.0 2022-11-7 18:02:50 26 27 36 33.7 57.9 2022-11-7 18:07:47 27 9 18 35.5 48.5 2022-11-7 18:12:45 28 40 71 33.7 58.7 2022-11-7 18:17:43 29 23 42 40.2 48.6 2022-11-7 18:22:41 30 17 30 40.2 59.1 2022-11-7 18:27:39 31 10 16 38.1 47.7 2022-11-7 18:32:37 32 24 44 35.7 59.0 2022-11-7 18:37:35 5 Conclusion To address the problems of low real-time environmental quality monitoring in open-pit mines and the inability to analyze data globally, this study proposed a distributed environmental online monitoring method and developed a distributed environmental online monitoring system. (1) The distributed environmental online monitoring system adopts the SOA architecture for modular design, which mainly includes hardware devices, communication channels, and software platforms. The hardware design uses the STM32 microcontroller as the control core and various sensors as the data acquisition terminal to collect data on PM2.5, PM10, temperature, noise, and other environmental indicators. The communication design adopts GPRS and RS-485 communication technologies to transmit data to the software monitoring platform in real time, thereby improving real-time environmental online monitoring. Meanwhile, the software design uses the modular concept for the design of the online monitoring process to ensure the independence and flexibility of each module. The user can view the real-time environmental conditions of the mine site and the trends of environmental changes in the mine site from the command center; then, they can adopt corresponding measures to prevent environmental hazards in the mine site in accordance with the early warning information. (2) On the basis of big data theory, the system relies on the data collected and transmitted by nodes, applies data pre-processing methods, adopts data cleaning and data integration techniques, carries out data analysis and data mining on the environmental index data of the mine area, and uses multiple linear regression analysis models to forecast and provide warnings on the environmental quality of the mine area. As a result, the analysis efficiency of environmental data is improved, and strong technical support is provided for environmental assessment, environmental prediction, and decision-making. (3) The distributed environmental online monitoring system was tested in a mine and found to be capable of real-time online monitoring of environmental quality indicators in the mine area. It can achieve automatic, real-time storage of data; analyze the environmental quality of the entire mine area; and offer early warnings on the basis of historical environmental quality data. The test results from the mine site showed the reliability and effectiveness of the proposed method and the built equipment with batch, multi-stage, online, and real-time features. The system can effectively capture changes in environmental indicators during the monitoring process and achieve intelligent online monitoring of the environmental quality of the mine area. It can help mine ecological authorities obtain timely and accurate environmental information on the mine area and can effectively assist the state in implementing environmental protection policies. Likewise, it offers technical support for early warning forecasting of mine ecological and environmental pollution, with good monitoring and early warning effects. Declarations Competing interests No competing interests. Authors' contributions Ru Li : Data curation; programming, software development; designing computer programs; implementation of the computer code and supporting algorithms; testing of existing code components;writing the initial draft. Shancheng Chen : Ideas; formulation or evolution of overarching research goals and aims; provision of study materials and computing resources; validation; data collection; critical revision . Funding Supported by: National Natural Science Foundation of China (41977253) and Major Project of Natural Science Research in Higher Education Institutions of Anhui Province (KJ2019ZD11). Availability of data and materials The data and information in this paper are available. 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Xiamen, China: Institute of Electrical and Electronics Engineers Inc,2022:270–273. Chen Sen, Wang Lu Junyu, Li Xiangyang, Cui Yuchen, Yan Xin. Design of four-channel magneto-optical modulation optical fiber communication device [J]. Experimental technology and management, 2022,39 (11): 117–120 + 125. Yang Ruifeng, Wang Xiong, Guo Chenxia, Zhang Peng. Design and application of environmental monitoring system based on ZigBee wireless sensor network [J]. Electronic devices, 2017,40 (03): 760–765. Qiu Shenghao, Zhu Yangqing, Liang, Dingyao. Design of Mobile Environment Monitoring and Analysis System Based on GPRS[C]. Shanghai, China: IOP Publishing Ltd,2019:China University of Petroleum; Yanshan University. Fang Fengling. Application of Distributed High-Precision Data Acquisition System Based on GPRS Wireless Network[C]. Springer Science and Business Media Deutschland GmbH, 2022:883–890. Matheus Santos Monteiro, Francisco L. De Caldas Filho, Pedro De O. Moura E Souza, et al. Solid waste management and monitoring system for smart cities: Development of a low-cost sustainable IoT architecture using GPRS/GSM[C]. Brasilia, Brazil: Institute of Electrical and Electronics Engineers Inc,2021. Chen Hang, Yan Shuai, Liu Sheng, Zhang Huixin. A distributed high-precision data acquisition system based on RS485 bus [J]. Instrumentation technology and sensors, 2021, No.457 (02): 71–74 + 79. Long Yue Hong. Design of underground gas concentration and humidity monitoring system based on RS-485[C]. Tianjin, China: Trans Tech Publications Ltd,2014:2962–2964. Zhang Haoran, Chen Lijun, Liu Kun, et al. The design of greenhouse automatic control system based on RS-485 protocol[C]. Shenyang, Liaoning, China: IEEE Computer Society,2013:1693–1696. C. S. R. Sandhya, Sri Vaishnavi Tirunagari, Shubhasmita Sahoo, et al. Extraction of Data from an RS-485 enabled Multi Function Meter for Building Monitoring Systems[C]. Tiruchirappalli, India: Institute of Electrical and Electronics Engineers Inc,2018. Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-2704725","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":185477181,"identity":"9a3bdd9a-fbe8-4828-b196-3052705e71ce","order_by":0,"name":"Ru Li","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAABAUlEQVRIiWNgGAWjYBACAwbGBmYwS4KB4cADAwYGfmbmww+I15IA1CLZzpZmgF8LAwNcC0MCSOQ8j4IEPi3m7M3Nnwsq7tjNn91jeCCh4F7i5sM8QINqbKJxabHsOdhgPOPMs+QNd84YAB1WnLjtMO+BBwzH0nIbcDnsRmJDMm/b4WQDiRyQlgSgFr4EA8aGw7i13H/YcBikRX4GVMvmZh4DCbxabjA2NgO12DHcgGrZwExAi2VPYjMzz5nDCQY30gpAWoxnHAYGcgIev5izH3/8mafisL38jOTNHz78SZDt7z98+MGHGhucWmAgEVVBAgHlIGBPhJpRMApGwSgYqQAAbEli00Tc7SkAAAAASUVORK5CYII=","orcid":"","institution":"Anhui University of Science and Technology","correspondingAuthor":true,"submittingAuthor":false,"prefix":"","firstName":"Ru","middleName":"","lastName":"Li","suffix":""},{"id":185477183,"identity":"27321a1d-d728-4c2c-add8-9a8f5e06816a","order_by":1,"name":"Shancheng Chen","email":"","orcid":"","institution":"Anhui Provincial Bureau of Coal Geology","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Shancheng","middleName":"","lastName":"Chen","suffix":""}],"badges":[],"createdAt":"2023-03-17 12:14:24","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-2704725/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-2704725/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":34785066,"identity":"a2457e2d-6ec6-4089-b17e-75d1ae150705","added_by":"auto","created_at":"2023-03-24 16:13:20","extension":"jpeg","order_by":1,"title":"Figure 1","display":"","copyAsset":false,"role":"figure","size":250155,"visible":true,"origin":"","legend":"\u003cp\u003eSystem technology roadmap.\u003c/p\u003e","description":"","filename":"floatimage1.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-2704725/v1/d49eaac949554d7802ee83a3.jpeg"},{"id":34785065,"identity":"3ba3ce90-969c-4363-8e9f-d369b6cc3037","added_by":"auto","created_at":"2023-03-24 16:13:20","extension":"jpeg","order_by":2,"title":"Figure 2","display":"","copyAsset":false,"role":"figure","size":173721,"visible":true,"origin":"","legend":"\u003cp\u003eSystem design block diagram.\u003c/p\u003e","description":"","filename":"floatimage2.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-2704725/v1/f908a20ebfdd75eca5374746.jpeg"},{"id":34786490,"identity":"d3ed02d5-2e43-4399-87d1-4f6298c84af9","added_by":"auto","created_at":"2023-03-24 16:21:20","extension":"jpeg","order_by":3,"title":"Figure 3","display":"","copyAsset":false,"role":"figure","size":34957,"visible":true,"origin":"","legend":"\u003cp\u003e1 - base, 2 - riser bracket, 3 - central control box, 4 - LED display and solar panel, 5 - temperature, humidity, and noise sensors, 6 - wind speed sensor, 7 - wind direction sensor\u003c/p\u003e\n\u003cp\u003eMain structure of the equipment.\u003c/p\u003e","description":"","filename":"floatimage3.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-2704725/v1/1e8e66cf22a07448394caa75.jpeg"},{"id":34785072,"identity":"0c94f4f4-dee2-4204-8ee5-696c4be8743d","added_by":"auto","created_at":"2023-03-24 16:13:20","extension":"jpeg","order_by":4,"title":"Figure 4","display":"","copyAsset":false,"role":"figure","size":238774,"visible":true,"origin":"","legend":"\u003cp\u003eSystem hardware structure diagram.\u003c/p\u003e","description":"","filename":"floatimage4.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-2704725/v1/4e598dceca662473d07c4968.jpeg"},{"id":34785074,"identity":"cf9d6cf9-9608-4168-bc31-00e21c9f02cd","added_by":"auto","created_at":"2023-03-24 16:13:20","extension":"jpeg","order_by":5,"title":"Figure 5","display":"","copyAsset":false,"role":"figure","size":1076726,"visible":true,"origin":"","legend":"\u003cp\u003eSTM32F103ZET6 chip schematic (source: PRECHIN).\u003c/p\u003e","description":"","filename":"floatimage5.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-2704725/v1/f21b1c97783270a8a9ea60ec.jpeg"},{"id":34785068,"identity":"31f54109-1ac4-4c05-ab1c-fbc231ed30ff","added_by":"auto","created_at":"2023-03-24 16:13:20","extension":"jpeg","order_by":6,"title":"Figure 6","display":"","copyAsset":false,"role":"figure","size":26284,"visible":true,"origin":"","legend":"\u003cp\u003eAnalog-to-digital conversion module schematic (source: PRECHIN).\u003c/p\u003e","description":"","filename":"floatimage6.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-2704725/v1/20541ec2839c1c47c685dec0.jpeg"},{"id":34785067,"identity":"14dd534a-69f1-44e8-8736-ad95a1890a6c","added_by":"auto","created_at":"2023-03-24 16:13:20","extension":"jpeg","order_by":7,"title":"Figure 7","display":"","copyAsset":false,"role":"figure","size":37504,"visible":true,"origin":"","legend":"\u003cp\u003eIIC bus module schematic (source: PRECHIN).\u003c/p\u003e","description":"","filename":"floatimage7.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-2704725/v1/106b7c8753568a2602f53e38.jpeg"},{"id":34785077,"identity":"b2de30bf-818f-4b4e-b763-ee3ab8f9f193","added_by":"auto","created_at":"2023-03-24 16:13:20","extension":"jpeg","order_by":8,"title":"Figure 8","display":"","copyAsset":false,"role":"figure","size":121908,"visible":true,"origin":"","legend":"\u003cp\u003eSerial communication module schematic (source: PRECHIN).\u003c/p\u003e","description":"","filename":"floatimage8.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-2704725/v1/c0024fa1e2b599f59a14b9b9.jpeg"},{"id":34787552,"identity":"caa6a82b-3c2c-44b8-b9b6-413622f66be9","added_by":"auto","created_at":"2023-03-24 16:29:20","extension":"jpeg","order_by":9,"title":"Figure 9","display":"","copyAsset":false,"role":"figure","size":74449,"visible":true,"origin":"","legend":"\u003cp\u003ePower circuit module schematic (source: PRECHIN).\u003c/p\u003e","description":"","filename":"floatimage9.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-2704725/v1/9364a22e34efa37a385e6db6.jpeg"},{"id":34786492,"identity":"7eb0daff-44b0-4dfe-8176-e93c81c0e97e","added_by":"auto","created_at":"2023-03-24 16:21:20","extension":"png","order_by":10,"title":"Figure 10","display":"","copyAsset":false,"role":"figure","size":48166,"visible":true,"origin":"","legend":"\u003cp\u003eFlow chart of environmental indicator collection and transmission in hardware design.\u003c/p\u003e","description":"","filename":"floatimage10.png","url":"https://assets-eu.researchsquare.com/files/rs-2704725/v1/2b5e90c4962b076019e43cd8.png"},{"id":34785075,"identity":"e385f57b-b294-4612-bd59-e0008bb92e06","added_by":"auto","created_at":"2023-03-24 16:13:20","extension":"jpeg","order_by":11,"title":"Figure 11","display":"","copyAsset":false,"role":"figure","size":137655,"visible":true,"origin":"","legend":"\u003cp\u003eCommunication transmission diagram.\u003c/p\u003e","description":"","filename":"floatimage11.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-2704725/v1/e7aacfeebbba9fb8fcc411fc.jpeg"},{"id":34787553,"identity":"3f3f4adc-5ea1-4010-bd08-6f51122a70c3","added_by":"auto","created_at":"2023-03-24 16:29:20","extension":"jpeg","order_by":12,"title":"Figure 12","display":"","copyAsset":false,"role":"figure","size":59835,"visible":true,"origin":"","legend":"\u003cp\u003eRS485 module schematic (source: PRECHIN).\u003c/p\u003e","description":"","filename":"floatimage12.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-2704725/v1/4ce92397063cc46ce85da442.jpeg"},{"id":34785076,"identity":"fe32eab4-888e-4cee-86a2-1dbaccdca2a3","added_by":"auto","created_at":"2023-03-24 16:13:20","extension":"jpeg","order_by":13,"title":"Figure 13","display":"","copyAsset":false,"role":"figure","size":146818,"visible":true,"origin":"","legend":"\u003cp\u003eSoftware platform function structure diagram.\u003c/p\u003e","description":"","filename":"floatimage13.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-2704725/v1/6497bff45bb74f7a94019580.jpeg"},{"id":35590509,"identity":"081a6fcc-0f04-4a43-834a-c0bdbd692728","added_by":"auto","created_at":"2023-04-11 14:44:52","extension":"pdf","order_by":0,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1256941,"visible":true,"origin":"","legend":"","description":"","filename":"manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-2704725/v1/792f9428-b22a-47df-9b2b-ac7d793f7820.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Distributed Environment Online Monitoring System Based on SOA","fulltext":[{"header":"1 Introduction","content":"\u003cp\u003eAs major energy sources, mining sites generate a large amount of particulate matter and noise while mining and processing energy, causing serious environmental pollution problems [\u003cspan additionalcitationids=\"CR2 CR3\" citationid=\"CR1\" class=\"CitationRef\"\u003e1\u003c/span\u003e\u0026ndash;\u003cspan citationid=\"CR4\" class=\"CitationRef\"\u003e4\u003c/span\u003e]. In line with China\u0026rsquo;s 14th Five-Year Plan, the country has incorporated ecological restoration and management of mining areas into its work, and people are becoming increasingly concerned about the environmental conditions of mining areas. Good mining environment is an important guarantee for maintaining the quality of the regional ecological environment, and environmental monitoring is the basis for managing the environment [\u003cspan additionalcitationids=\"CR6\" citationid=\"CR5\" class=\"CitationRef\"\u003e5\u003c/span\u003e\u0026ndash;\u003cspan citationid=\"CR7\" class=\"CitationRef\"\u003e7\u003c/span\u003e]. Thus, timely monitoring and early warning of the mining environment are necessary [\u003cspan citationid=\"CR8\" class=\"CitationRef\"\u003e8\u003c/span\u003e].\u003c/p\u003e \u003cp\u003eCurrently, manual monitoring suffers from high costs, low efficiency, and many errors [\u003cspan citationid=\"CR9\" class=\"CitationRef\"\u003e9\u003c/span\u003e, \u003cspan citationid=\"CR10\" class=\"CitationRef\"\u003e10\u003c/span\u003e], and sensor monitoring suffers from low monitoring efficiency, inability to process and analyze data, and inability to assess and provide early warning of the environmental quality in mining areas [\u003cspan additionalcitationids=\"CR12 CR13\" citationid=\"CR11\" class=\"CitationRef\"\u003e11\u003c/span\u003e\u0026ndash;\u003cspan citationid=\"CR14\" class=\"CitationRef\"\u003e14\u003c/span\u003e]. Meanwhile, automated monitoring suffers from high equipment costs, low coverage, and lack of analysis and prediction capabilities [\u003cspan citationid=\"CR15\" class=\"CitationRef\"\u003e15\u003c/span\u003e].\u003c/p\u003e \u003cp\u003eIn response to these problems, scholars at home and abroad have conducted extensive research, and most of them have adopted \u0026ldquo;3S\u0026rdquo; technology to make environmental monitoring intelligent, precise, and integrated. In China, Lv Baoqi et al. [\u003cspan citationid=\"CR16\" class=\"CitationRef\"\u003e16\u003c/span\u003e] and Wang Gengming et al. [\u003cspan citationid=\"CR17\" class=\"CitationRef\"\u003e17\u003c/span\u003e] conducted dynamic monitoring of mining environments by using remote sensing monitoring technology. Wang Junhua et al. [\u003cspan citationid=\"CR18\" class=\"CitationRef\"\u003e18\u003c/span\u003e] employed remote sensing and geographic information system technologies to investigate the ecological environment of mining areas. Zhu Hongxiu et al. [\u003cspan citationid=\"CR19\" class=\"CitationRef\"\u003e19\u003c/span\u003e] and Nie Huon et al. [\u003cspan citationid=\"CR20\" class=\"CitationRef\"\u003e20\u003c/span\u003e] utilized NB-IoT and the cloud platform environmental monitoring system to collect and process data through sensors and microprocessors; afterward, they applied communication technology to achieve remote environmental monitoring functions. In other countries, Song Wen et al. [\u003cspan citationid=\"CR21\" class=\"CitationRef\"\u003e21\u003c/span\u003e], Li Jun et al. [\u003cspan citationid=\"CR22\" class=\"CitationRef\"\u003e22\u003c/span\u003e], and Shuang Shuai et al. [\u003cspan citationid=\"CR23\" class=\"CitationRef\"\u003e23\u003c/span\u003e] used remote sensing to extract environmental factors for the prediction of the atmospheric environment in the mining sector. Li Jun et al. [\u003cspan citationid=\"CR24\" class=\"CitationRef\"\u003e24\u003c/span\u003e], Wu Zhenhua et al. [\u003cspan citationid=\"CR25\" class=\"CitationRef\"\u003e25\u003c/span\u003e], and Du Shouhang et al. [\u003cspan citationid=\"CR26\" class=\"CitationRef\"\u003e26\u003c/span\u003e] adopted opencast coal mines as the research object and used remote sensing technology to dynamically monitor the environmental conditions in mining areas. Jens Sondergaard et al. [\u003cspan citationid=\"CR27\" class=\"CitationRef\"\u003e27\u003c/span\u003e] utilized monitoring and websites to target specific sites and mines for environmental monitoring efforts and discussed spatial and temporal trends in mine pollution.\u003c/p\u003e \u003cp\u003eHowever, the existing wireless environmental monitoring equipment and systems for open-pit mines have problems, such as independent monitoring and processing of multiple environmental parameters and weak comprehensive analysis capability [\u003cspan citationid=\"CR28\" class=\"CitationRef\"\u003e28\u003c/span\u003e, \u003cspan citationid=\"CR29\" class=\"CitationRef\"\u003e29\u003c/span\u003e]; hence, they cannot achieve all-around real-time monitoring of the entire mine area. Moreover, the collected monitoring information lacks continuity, so judging the trend of environmental changes in the mine area is challenging, and the difficulty of early warning of the environmental quality of the mine area is increased. With the continuous accumulation and increment of environmental monitoring data in mining areas, the requirements for smooth management and timeliness of monitoring data have further increased, the application volume of monitoring data analysis has also increased, and the centralized cloud computing architecture faces challenges, such as high latency, low coverage, and lagging data transmission [\u003cspan citationid=\"CR30\" class=\"CitationRef\"\u003e30\u003c/span\u003e, \u003cspan citationid=\"CR31\" class=\"CitationRef\"\u003e31\u003c/span\u003e].\u003c/p\u003e \u003cp\u003eTherefore, a highly accurate, real-time, distributed online environmental monitoring system (hereinafter referred to as \u0026ldquo;the system\u0026rdquo;) needs to be established for opencast mines. This study proposes a system design for developing an online monitoring system with data analysis and early warning functions. The system combines Internet of Things (IoT) and distributed application technologies for environmental monitoring. It is based on IoT technology and transmits monitoring data to a software platform through communication. The hardware design adopts the STM32 microcontroller as the core to control each sensor during the collection of environmental indicator data. Through GPRS and RS-485 communication methods, the environmental data from each monitoring point are uploaded to the software platform, and the software design uses the JavaEE development environment to clean and analyze the collected data and display the results and warning information in the system interface. The system is capable of real-time online monitoring of the environmental quality indicators of the mine area; automatic, real-time storage of data; analyzing the environmental quality of the entire mine area; providing early warnings; and realizing intelligent monitoring of the environmental quality of the mine area.\u003c/p\u003e"},{"header":"2 System Technical Route","content":"\u003cp\u003eThe distributed environmental online monitoring system is developed using the following processes: system architecture design, hardware design, communication design, software design, and deployment testing.\u003c/p\u003e \u003cp\u003eThis study summarizes the existing environmental online monitoring system by designing and developing a distributed environmental online monitoring system through IoT. First, the master control unit in the hardware device controls the sensors to collect environmental data. Second, the data are transmitted to the software platform server through a communication channel. Lastly, the environmental indicators of the environmental quality monitoring area in the server are processed and analyzed through big data analysis methods and environmental assessments; afterward, early warnings are provided. Through this technology route, the system can analyze and evaluate the data while measuring environmental factor data. Artificial intelligence algorithms are utilized to identify heavily polluted areas and evaluate the changes in environmental quality in the area by measuring the changes in environmental indicator data. The primary objective is to build a distributed environmental online monitoring system for open-pit mines and provide technical support for relevant departments and mining areas. The specific technology roadmap is shown in Fig.\u0026nbsp;\u003cspan refid=\"Fig1\" class=\"InternalRef\"\u003e1\u003c/span\u003e.\u003c/p\u003e \u003cp\u003e \u003c/p\u003e"},{"header":"3 Overall System Design","content":" \u003cp\u003e \u003cem\u003e3.1 Overall system requirements.\u003c/em\u003e The system is required to collect and manage environmental indicators in mining areas and provide early environmental warning and technical support for government decision-making. The system is implemented through a combination of software and hardware and designed using a modular concept that separates each function into independent modules, thus making the system stable and facilitating the future expansion and extension of the system. The hardware design is based on the selection of different sensors for the environmental indicators, the development of online environmental monitoring equipment for mining areas, and the development of hardware equipment that can achieve accurate collection and real-time transmission of monitoring data. The software design makes up for the lack of computing resources and energy capacity of the environmental monitoring terminal equipment by using the system software platform and can realize the functions of data reception monitoring, data storage, data analysis, forecasting, and early warning.\u003c/p\u003e \u003cp\u003e \u003cem\u003e3.2 System architecture.\u003c/em\u003e A distributed environmental online monitoring system is a collection of data and information collection, analysis, operation, and output services. The system is mainly composed of the following layers.\u003c/p\u003e \u003c/li\u003e \u003c/span\u003e \u003c/ol\u003e \u003c/p\u003e \u003cp\u003e(1) \u003cem\u003eEquipment layer.\u003c/em\u003e The equipment layer provides the operating environment for the system hardware and software.\u003c/p\u003e \u003cp\u003e(2) \u003cem\u003eNetwork layer.\u003c/em\u003e The network layer provides the network environment in which the system communicates.\u003c/p\u003e \u003cp\u003e(3) \u003cem\u003eData layer.\u003c/em\u003e The data layer includes data centers (e.g., cloud centers, real-time databases, and relational databases) and provides data storage, data dictionaries, unified data interaction, protocol parsing, and other capabilities.\u003c/p\u003e \u003cp\u003e(4) \u003cem\u003eService layer.\u003c/em\u003e The service layer provides a visual display platform and a visual operation platform, and it is interfaced with the data layer for resource access and to provide the application layer with services, such as display environment, communication, and data access.\u003c/p\u003e \u003cp\u003e(5) \u003cem\u003eApplication layer.\u003c/em\u003e The application layer provides direct access to monitoring system services, such as view data report, view historical data, data analysis, and environmental monitoring alert services.\u003c/p\u003e \u003cp\u003eThe system can be divided into three sub-modules, namely, hardware design, software design, and communication design. The system design diagram is shown in Fig.\u0026nbsp;\u003cspan refid=\"Fig2\" class=\"InternalRef\"\u003e2\u003c/span\u003e. The hardware design mainly consists of a central control box, RS485 devices, and LED screens. The communication design consists of GPRS and RS-485 communication methods to ensure the smooth operation of the system. Meanwhile, the software design is developed in the JavaEE platform by using the Spring\u0026thinsp;+\u0026thinsp;VUE framework, and it consists of data reception, data storage, data analysis, forecasting, and early warning modules.\u003c/p\u003e \u003cp\u003e \u003c/p\u003e \u003cp\u003e \u003cem\u003e3.3 Hardware design.\u003c/em\u003e The collection and processing of environmental data are prerequisites for environmental monitoring and early warning. The hardware structure of the system consists of a central control box, RS485 equipment, and an LED screen. The central control box consists of the main control module, a sensor module, a relay module, and a power circuit module. The main control module is controlled by the STM32F103ZET6 chip, the sensor module controls each sensor to collect environmental indicator data, the relay module controls the opening and closing status of the whole hardware circuit, and the power circuit module provides power for the operation of the microcontroller. The main structure of the system equipment is shown in Fig.\u0026nbsp;\u003cspan refid=\"Fig3\" class=\"InternalRef\"\u003e3\u003c/span\u003e, and the system hardware structure is shown in Fig.\u0026nbsp;4.\u003c/p\u003e \u003cp\u003e(1) \u003cem\u003eCentral control box.\u003c/em\u003e The central control box contains the main control, sensor, relay, power control, and other modules.\u003c/p\u003e \u003cp\u003eMain control module. As the core of the whole hardware device, the main control module is responsible for the control of the whole hardware device, the storage of data, and the sending of information to the software platform. The main control module adopts an STM32 microcontroller as the core. The STM32 microcontroller has low power consumption, high performance, low price, and good collaborative control capability [\u003cspan additionalcitationids=\"CR33\" citationid=\"CR32\" class=\"CitationRef\"\u003e32\u003c/span\u003e\u0026ndash;\u003cspan citationid=\"CR34\" class=\"CitationRef\"\u003e34\u003c/span\u003e]. The microcontroller integrates a clock circuit module, an analog-to-digital conversion module (ADC), an IIC bus module, a serial communication module (GPIO), and a power circuit module around the STM32 chip to form the core data collection components. A schematic of the STM32 chip is shown in Fig.\u0026nbsp;\u003cspan refid=\"Fig4\" class=\"InternalRef\"\u003e5\u003c/span\u003e. The clock circuit module is used to record the data collection time, and the ADC module is used to convert the collected PM2.5 and PM10 analog signals into digital signals. The diagram of ADC is shown in Fig.\u0026nbsp;\u003cspan refid=\"Fig5\" class=\"InternalRef\"\u003e6\u003c/span\u003e. The IIC bus module transfers the collected temperature and noise data to the STM32 chip, and its schematic is shown in Fig.\u0026nbsp;\u003cspan refid=\"Fig6\" class=\"InternalRef\"\u003e7\u003c/span\u003e. The serial communication module is used for communication between serial ports, and its schematic is shown in Fig.\u0026nbsp;\u003cspan refid=\"Fig7\" class=\"InternalRef\"\u003e8\u003c/span\u003e. Meanwhile, the power supply circuit module is used to provide the power required by the microcontroller, and its schematic is shown in Fig.\u0026nbsp;\u003cspan refid=\"Fig8\" class=\"InternalRef\"\u003e9\u003c/span\u003e. The microcontroller controls the RS485 device for data acquisition. The data storage module caches environmental indicator data and transmits the collected information to the software platform through the communication channel in accordance with a predetermined program.\u003c/p\u003e \u003cp\u003eSensor module. The sensor module is one of the core components of the hardware design of the whole system. The selection of environmental indicator sensors should comply with national standard methods, and the sensors should have low power consumption, high reliability, and high measurement accuracy in consideration of the long-term operation and future maintenance of environmental online monitoring equipment [\u003cspan additionalcitationids=\"CR36\" citationid=\"CR35\" class=\"CitationRef\"\u003e35\u003c/span\u003e\u0026ndash;\u003cspan citationid=\"CR37\" class=\"CitationRef\"\u003e37\u003c/span\u003e]. The sensor module includes PM2.5, PM10, temperature, noise, and other sensors. The PM2.5 and PM10 sensors monitor PM2.5 and PM10 concentrations in the mine environment, respectively. The temperature sensor monitors the temperature in the mine environment, and the noise sensor monitors the amount of noise (in decibels) in the mine. The different sensors are distinguished and labeled with different pins in the STM32 microcontroller to ensure the collection, transmission, and analysis of data on environmental indicators in the mine area and to facilitate timely overhaul by maintenance personnel.\u003c/p\u003e \u003cp\u003eRelay module. The relay module monitors the status between current and voltage signals in the central control box. It controls the opening and closing of the entire hardware equipment circuit to achieve a small current for controlling a large current [\u003cspan additionalcitationids=\"CR39 CR40 CR41 CR42 CR43\" citationid=\"CR38\" class=\"CitationRef\"\u003e38\u003c/span\u003e\u0026ndash;\u003cspan citationid=\"CR44\" class=\"CitationRef\"\u003e44\u003c/span\u003e].\u003c/p\u003e \u003cp\u003ePower control module. The power control module of the system hardware equipment is supplied by the battery pack installed inside the system and the charging part of the solar photovoltaic panel. The electrical energy generated by solar energy charges the battery pack, thus ensuring that the voltage output from the system power control module makes the system work normally and is more than enough to provide a stable power supply for the system.\u003c/p\u003e \u003cp\u003e(2) \u003cem\u003eRS485 equipment.\u003c/em\u003e Given that the system is designed to monitor several parameters related to the environmental quality of the mine, the main parameters, such as PM2.5, PM10, temperature, and noise, are selected as monitoring objects. The RS485 equipment includes PM2.5, PM10, noise, temperature, humidity, wind speed, wind direction, air pressure, and other monitoring equipment to be used for system expansion.\u003c/p\u003e \u003cp\u003e(3) \u003cem\u003eLED screen\u003c/em\u003e. While transmitting data to the software platform, the hardware device displays the current real-time data on the LED screen in the hardware device.\u003c/p\u003e \u003cp\u003eFor the collection of environmental indicator data, data collection nodes are formed through the multiple sensors of the sensor module in the STM32 microcontroller, followed by online burning of the program, initialization of the serial port and module to the STM32 microcontroller by means of USB connection from the PC side, and judging whether the environmental indicator data are collected or not. The environmental indicator data collected by the RS485 device can be sorted based on the type of parameters collected. The output signal of the sensor is divided into analog and digital signals. The analog signals collected by the PM2.5 and PM10 sensors are converted to digital signals by the ADC module; then, their values are read. The digital signals collected by the temperature and noise sensors are read directly via the serial or I/O ports, and the collected data are outputted to the IIC bus module.The flow chart of environmental indicator collection and transmission in hardware design is shown in Fig.\u0026nbsp;\u003cspan refid=\"Fig9\" class=\"InternalRef\"\u003e10\u003c/span\u003e.\u003c/p\u003e \u003cp\u003e \u003c/p\u003e \u003cp\u003e \u003cem\u003e3.4 Communication design.\u003c/em\u003e The data collected by the system hardware are transmitted to the software platform via a communication module. The communication design of this system combines RS-485 GPRS communication to make the system communication overcome the drawbacks of complex networking and maintenance difficulties. The combination also has the advantages of reliability and real-time performance, thus creating a good remote monitoring and real-time information collection system. The communication design uses the STM32 chip in the hardware device to connect an external RS485 module and form a sub-monitoring system within a certain range and distance by using the RS485 FieldBus card. Information acquisition and control by this sub-system are completed by the microcontroller in the hardware device, which is connected to the GPRS wireless module through the serial port to realize communication with the system software platform and sensor collection in the hardware device. The microcontroller is connected to the GPRS wireless module through the serial port to communicate with the system software platform and transmit the environmental indicator data collected by the sensors in the hardware device. The system communication diagram is shown in Fig.\u0026nbsp;\u003cspan refid=\"Fig10\" class=\"InternalRef\"\u003e11\u003c/span\u003e.\u003c/p\u003e \u003cp\u003e \u003c/p\u003e \u003cp\u003e(1) \u003cem\u003eGPRS communication.\u003c/em\u003e GPRS is a wireless packet data exchange and transmission technology with a normal data transmission rate of 61.7 kB/s and a maximum capacity of 178.4 kB/s [\u003cspan citationid=\"CR45\" class=\"CitationRef\"\u003e45\u003c/span\u003e]. It improves the transmission rate and is inexpensive. After the hardware device has collected environmental indicator data, the data can be transmitted remotely and in real time by using GPRS [\u003cspan additionalcitationids=\"CR47\" citationid=\"CR46\" class=\"CitationRef\"\u003e46\u003c/span\u003e\u0026ndash;\u003cspan citationid=\"CR48\" class=\"CitationRef\"\u003e48\u003c/span\u003e], which transmits the data directly to the server side, that is, the software platform, where the user can view the real-time data via a PC or an app and store the acquired data information in the database of the system software platform. The GPRS communication method allows fast access to the software and can readily provide clear, real-time data to software platform users. Users can also grasp the environmental quality of the mine area in time in accordance with the real-time environmental index data.\u003c/p\u003e \u003cp\u003e(2) \u003cem\u003eRS-485 communication\u003c/em\u003e. RS-485 is a multi-transmitter standard with excellent interference suppression for signal transmission, low impedance, zero grounding problems, transmission distance of up to 1200 m, and transmission rate of up to 1 Mbps [\u003cspan citationid=\"CR49\" class=\"CitationRef\"\u003e49\u003c/span\u003e]. RS-485 communication is an open communication network that can be used as a link for intelligent devices [\u003cspan additionalcitationids=\"CR51\" citationid=\"CR50\" class=\"CitationRef\"\u003e50\u003c/span\u003e\u0026ndash;\u003cspan citationid=\"CR52\" class=\"CitationRef\"\u003e52\u003c/span\u003e]. The bus network nodes can be hooked up to RS-485 communication by using the standard Modbus RTU protocol and can be directly connected to a microcontroller. In an RS-485 communication system consisting of a PC and a microcontroller, node identification is achieved by setting different station addresses. Ordinary PCs generally do not carry an RS485 interface, so an RS-232C/RS-485 converter is used; for microcontrollers, TTL/RS-485 level conversion can be applied using the MAX485 chip. The schematic of the RS485 module is shown in Fig.\u0026nbsp;\u003cspan refid=\"Fig11\" class=\"InternalRef\"\u003e12\u003c/span\u003e.\u003c/p\u003e \u003cp\u003e \u003c/p\u003e \u003cp\u003e \u003cem\u003e3.5 Software design.\u003c/em\u003e System software design refers to placing the environmental indicator data transmitted through the communication channel in the database of the software platform by using the development framework of Spring Boot\u0026thinsp;+\u0026thinsp;VUE on the JavaEE platform. It involves combining Redis (non-relational data) and MySQL (relational data) databases, adopting the B/S software architecture, using the idea of structured programming, and carrying out a top\u0026ndash;down detailed procedure. The module structure is designed to develop applications, including environmental information sub-platform, forecast and early warning sub-platform, and business management sub-platform, whose functions include data reception, data processing, real-time display, comprehensive analysis, forecast, early warning, and visualization operations. The functional structure of the software platform is shown in Fig.\u0026nbsp;\u003cspan refid=\"Fig12\" class=\"InternalRef\"\u003e13\u003c/span\u003e.\u003c/p\u003e \u003cp\u003e(1) \u003cem\u003eEnvironmental information sub-platform.\u003c/em\u003e The environmental information sub-platform includes the functions of real-time and historical data display.\u003c/p\u003e \u003cp\u003eThe real-time data display function means that after receiving the environmental indicator data transmitted to the software platform by each monitoring point through the communication channel, the environmental information sub-platform collects and processes the data then displays the environmental indicator information on the interface of the software platform so that users can enter the real-time monitoring data page to view the latest data on particle concentration, temperature, and noise in each monitoring point and monitoring equipment in the mine area. The data are displayed in a list in the user interface so that users can view the data by simply logging into their browser and mobile terminal. The data in the table can also be filtered by environmental indicator name, indicator range, date, and other relevant conditions and can be sorted by indicator size and date.\u003c/p\u003e \u003cp\u003eThe historical data display function means that while the environmental information sub-platform receives data, the collected data are saved to the database so that historical environmental information data can be displayed. This function allows the corresponding data to be queried by options, such as mine number, monitoring point number, equipment number, and date. This function can transform historical data tables into digital images, such as line graphs, to visually reflect the change patterns of PM2.5, PM10, and other indicators in the mine area within a certain period.\u003c/p\u003e \u003cp\u003e(2) \u003cem\u003eForecasting and early-warning sub-platform.\u003c/em\u003e The forecasting and warning sub-platform is used to analyze environmental indicator data to understand the state of environmental quality in the mine area and to grasp the changes in environmental quality so that timely preventive measures can be applied. The forecasting and warning sub-platform further analyzes the data received and stored by the environmental information sub-platform by using multiple linear regression forecasting models. Through continuous monitoring of the mine area at multiple points, the environmental quality of each area of the mine is assessed. When the environmental indicators are predicted to exceed the safe range in the next period, corresponding early warning information is given. The forecast information can be displayed in the form of visual images in the mine diagram, and it includes information on mine monitoring points and alarm information, which can help users observe and understand the environmental status of the mine and facilitate timely prevention and control.\u003c/p\u003e \u003cp\u003eThe real-time forecasting and warning function in the software platform employs a multiple linear regression model for forecasting. The model can be expressed as\u003c/p\u003e \u003cp\u003e \u003cem\u003eY\u003c/em\u003e\u0026thinsp;=\u0026thinsp;\u003cem\u003eβ\u003c/em\u003e\u003csub\u003e0\u003c/sub\u003e\u0026thinsp;+\u0026thinsp;\u003cem\u003eβ\u003c/em\u003e\u003csub\u003e1\u003c/sub\u003e\u003cem\u003eX\u003c/em\u003e\u003csub\u003e1\u003c/sub\u003e\u0026thinsp;+\u0026thinsp;\u003cem\u003eβ\u003c/em\u003e\u003csub\u003e2\u003c/sub\u003e\u003cem\u003eX\u003c/em\u003e\u003csub\u003e2\u003c/sub\u003e+⋯+\u003cem\u003eβ\u003c/em\u003e\u003csub\u003e\u003cem\u003en\u003c/em\u003e\u003c/sub\u003e\u003cem\u003eX\u003c/em\u003e\u003csub\u003e\u003cem\u003en\u003c/em\u003e\u003c/sub\u003e\u0026thinsp;+\u0026thinsp;\u003cem\u003eε\u003c/em\u003e,\u003c/p\u003e \u003cp\u003ewhere \u003cem\u003eY\u003c/em\u003e is the dependent variable representing the environmental quality of the mine. The larger \u003cem\u003eY\u003c/em\u003e is, the worse the quality of the mine is. The smaller \u003cem\u003eY\u003c/em\u003e is, the better the quality of the mine is. \u003cem\u003eX\u003c/em\u003e\u003csub\u003e\u003cem\u003ei\u003c/em\u003e\u003c/sub\u003e (\u003cem\u003ei\u003c/em\u003e\u0026thinsp;=\u0026thinsp;1,2,...,\u003cem\u003en\u003c/em\u003e) represents the relevant indicators, \u003cem\u003en\u003c/em\u003e is the number of environmental indicators, \u003cem\u003eβ\u003c/em\u003e\u003csub\u003e0\u003c/sub\u003e represents the regression constant, \u003cem\u003eβ\u003c/em\u003e\u003csub\u003e\u003cem\u003ei\u003c/em\u003e\u003c/sub\u003e refers to the regression coefficient, and \u003cem\u003eε\u003c/em\u003e is a random error term.\u003c/p\u003e \u003cp\u003eThe modeling steps are as follows: (i) data acquisition and transferring the environmental indicator data stored in the database to the module by calling the internal program of the software platform; (ii) cleaning and pre-processing the transferred data to deal with the residual and abnormal values in the data; (iii) calculating the corresponding regression coefficients and regression constants of the environmental indicators; (iv) substituting the calculated regression coefficients and regression constants into the prediction model to determine the prediction model function; and (v) prediction estimation and substituting the newly acquired data into the prediction model function to calculate the corresponding function value. If the function value is outside the safe range, an alarm message will be displayed in time on the visualization interface of the software platform.\u003c/p\u003e \u003cp\u003e(3) \u003cem\u003eBusiness management sub-platform.\u003c/em\u003e The business management sub-platform includes the mine area diagram, mine monitoring point management, mine monitoring equipment management, and personnel and authority management. Users can locate the geographical position of each device by viewing the mine\u0026rsquo;s schematic. The mine environmental monitoring points and monitoring equipment are deployed in accordance with national policies and the actual situation of the mine site and then entered into the software platform for monitoring point and monitoring equipment management. Users can monitor the operational status of the equipment at the mine site in real time through the equipment management function. When monitoring equipment failure is detected, users receive abnormality reports of the relevant equipment so that the cause of the failure can be determined, and maintenance personnel can be dispatched promptly. Personnel and authority management can further assist in the intelligent construction of the mine.\u003c/p\u003e \u003cp\u003e \u003c/p\u003e"},{"header":"4 Experimental Investigation","content":"\u003cp\u003eTo verify the effectiveness of the distributed environmental online monitoring system designed in this study and test the comprehensive performance of the system, several monitoring points were deployed in a mine. The hardware equipment of the system was installed, and the system was tested.\u003c/p\u003e \u003cp\u003eGiven that the system mainly focuses on the acquisition, transmission, processing, and analysis of main environmental indicators, such as PM2.5, PM10, temperature, and noise, and considering that various possible factors can affect the performance of the system, the data at different time points were collected and analyzed accordingly to ensure the feasibility and effectiveness of the system. First, the system hardware equipment was used to collect environmental indicator data from the mine site. Second, the collected information is transmitted to the system software platform through the communication channel in accordance with the internal settings of the system hardware, and the data are saved to the database. Lastly, the system software platform functions are used to display the environmental information of the mine site and provide warnings when needed.\u003c/p\u003e \u003cp\u003eThe monitoring parameters obtained in the mine site are shown in Table\u0026nbsp;\u003cspan refid=\"Tab1\" class=\"InternalRef\"\u003e1\u003c/span\u003e. The information on each monitoring point displayed in the interface of the software visualization platform is consistent with the actual measured values in the field. When the site environmental indicator parameters exceed the set values, the system issues an alarm command on the visualization interface, and the user receives the relevant alarm information so that relevant preventive measures can be implemented in time. The test results showed that the system is consistent with the actual situation in the mine and can provide technical support to mining enterprises and government departments for making decisions, improving the efficiency of environmental monitoring in the mine, and providing good early warning regarding the environmental conditions in the mine.\u003c/p\u003e \u003cp\u003e \u003cdiv class=\"gridtable\"\u003e\u003ctable float=\"Yes\" id=\"Tab1\" border=\"1\"\u003e \u003ccaption language=\"En\"\u003e \u003cdiv class=\"CaptionNumber\"\u003eTable 1\u003c/div\u003e \u003cdiv class=\"CaptionContent\"\u003e \u003cp\u003eDistributed environmental online monitoring system\u0026rsquo;s environmental indicators data sheet.\u003c/p\u003e \u003c/div\u003e \u003c/caption\u003e \u003ccolgroup cols=\"6\"\u003e \u003cdiv align=\"left\" class=\"colspec\" colname=\"c1\" colnum=\"1\"\u003e\u003c/div\u003e \u003cdiv align=\"char\" char=\".\" class=\"colspec\" colname=\"c2\" colnum=\"2\"\u003e\u003c/div\u003e \u003cdiv align=\"char\" char=\".\" class=\"colspec\" colname=\"c3\" colnum=\"3\"\u003e\u003c/div\u003e \u003cdiv align=\"char\" char=\".\" class=\"colspec\" colname=\"c4\" colnum=\"4\"\u003e\u003c/div\u003e \u003cdiv align=\"char\" char=\".\" class=\"colspec\" colname=\"c5\" colnum=\"5\"\u003e\u003c/div\u003e \u003cdiv align=\"char\" char=\"\u0026minus;\" class=\"colspec\" colname=\"c6\" colnum=\"6\"\u003e\u003c/div\u003e \u003cthead\u003e \u003ctr\u003e \u003cth align=\"left\" colname=\"c1\"\u003e \u003cp\u003eMonitoring points\u003c/p\u003e \u003c/th\u003e \u003cth align=\"left\" colname=\"c2\"\u003e \u003cp\u003ePM2.5/\u0026micro;m\u003c/p\u003e \u003c/th\u003e \u003cth align=\"left\" colname=\"c3\"\u003e \u003cp\u003ePM10/\u0026micro;m\u003c/p\u003e \u003c/th\u003e \u003cth align=\"left\" colname=\"c4\"\u003e \u003cp\u003eTemperature/\u0026deg;C\u003c/p\u003e \u003c/th\u003e \u003cth align=\"left\" colname=\"c5\"\u003e \u003cp\u003eNoise/dB\u003c/p\u003e \u003c/th\u003e \u003cth align=\"left\" colname=\"c6\"\u003e \u003cp\u003eTime\u003c/p\u003e \u003c/th\u003e \u003c/tr\u003e \u003c/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e1\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e27\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e27\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e30.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e60.3\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 16:03:42\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e2\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e182\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e202\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e32.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e63.8\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 16:08:40\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e3\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e180\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e121\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e33.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e60.6\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 16:13:37\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e4\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e222\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e251\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e34.1\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e62.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 16:18:35\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e5\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e244\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e272\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e34.4\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e57.1\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 16:23:33\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e6\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e337\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e337\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e34.7\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e61.8\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 16:28:31\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e7\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e303\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e333\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e35.3\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e62.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 16:33:28\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e8\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e86\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e128\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e35.5\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e60.8\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 16:38:26\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e9\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e164\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e173\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e36.5\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e71.8\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 16:43:24\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e10\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e265\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e252\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e37.4\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e59.1\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 16:48:22\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e11\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e234\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e251\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e38.2\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e61.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 16:53:20\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e12\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e246\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e235\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e38.2\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e65.1\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 16:58:18\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e13\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e221\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e200\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e37.4\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e73.1\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 17:03:16\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e14\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e132\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e110\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e37.1\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e70.5\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 17:08:13\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e15\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e245\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e257\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e35.9\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e72.5\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 17:13:11\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e16\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e385\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e419\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e36.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e67.7\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 17:18:09\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e17\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e246\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e219\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e34.6\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e62.7\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 17:23:07\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e18\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e207\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e198\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e34.7\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e58.4\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 17:28:05\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e19\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e91\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e117\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e33.1\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e60.5\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 17:33:03\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e20\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e230\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e233\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e33.5\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e53.8\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 17:38:00\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e21\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e251\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e235\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e32.9\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e49.4\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 17:42:58\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e22\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e214\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e163\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e32.7\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e58.7\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 17:47:56\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e23\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e124\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e134\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e30.6\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e48.8\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 17:52:54\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e24\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e86\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e114\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e34.5\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e57.9\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 17:57:52\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e25\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e36\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e48\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e35.4\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e49.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 18:02:50\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e26\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e27\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e36\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e33.7\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e57.9\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 18:07:47\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e27\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e9\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e18\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e35.5\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e48.5\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 18:12:45\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e28\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e40\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e71\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e33.7\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e58.7\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 18:17:43\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e29\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e23\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e42\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e40.2\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e48.6\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 18:22:41\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e30\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e17\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e30\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e40.2\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e59.1\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 18:27:39\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e31\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e10\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e16\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e38.1\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e47.7\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 18:32:37\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003e32\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e \u003cp\u003e24\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c3\"\u003e \u003cp\u003e44\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c4\"\u003e \u003cp\u003e35.7\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\".\" colname=\"c5\"\u003e \u003cp\u003e59.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"char\" char=\"\u0026minus;\" colname=\"c6\"\u003e \u003cp\u003e2022-11-7 18:37:35\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003c/tbody\u003e \u003c/colgroup\u003e \u003c/table\u003e\u003c/div\u003e \u003c/p\u003e"},{"header":"5 Conclusion","content":"\u003cp\u003eTo address the problems of low real-time environmental quality monitoring in open-pit mines and the inability to analyze data globally, this study proposed a distributed environmental online monitoring method and developed a distributed environmental online monitoring system.\u003c/p\u003e \u003cp\u003e(1) The distributed environmental online monitoring system adopts the SOA architecture for modular design, which mainly includes hardware devices, communication channels, and software platforms. The hardware design uses the STM32 microcontroller as the control core and various sensors as the data acquisition terminal to collect data on PM2.5, PM10, temperature, noise, and other environmental indicators. The communication design adopts GPRS and RS-485 communication technologies to transmit data to the software monitoring platform in real time, thereby improving real-time environmental online monitoring. Meanwhile, the software design uses the modular concept for the design of the online monitoring process to ensure the independence and flexibility of each module. The user can view the real-time environmental conditions of the mine site and the trends of environmental changes in the mine site from the command center; then, they can adopt corresponding measures to prevent environmental hazards in the mine site in accordance with the early warning information.\u003c/p\u003e \u003cp\u003e(2) On the basis of big data theory, the system relies on the data collected and transmitted by nodes, applies data pre-processing methods, adopts data cleaning and data integration techniques, carries out data analysis and data mining on the environmental index data of the mine area, and uses multiple linear regression analysis models to forecast and provide warnings on the environmental quality of the mine area. As a result, the analysis efficiency of environmental data is improved, and strong technical support is provided for environmental assessment, environmental prediction, and decision-making.\u003c/p\u003e \u003cp\u003e(3) The distributed environmental online monitoring system was tested in a mine and found to be capable of real-time online monitoring of environmental quality indicators in the mine area. It can achieve automatic, real-time storage of data; analyze the environmental quality of the entire mine area; and offer early warnings on the basis of historical environmental quality data. The test results from the mine site showed the reliability and effectiveness of the proposed method and the built equipment with batch, multi-stage, online, and real-time features.\u003c/p\u003e \u003cp\u003eThe system can effectively capture changes in environmental indicators during the monitoring process and achieve intelligent online monitoring of the environmental quality of the mine area. It can help mine ecological authorities obtain timely and accurate environmental information on the mine area and can effectively assist the state in implementing environmental protection policies. Likewise, it offers technical support for early warning forecasting of mine ecological and environmental pollution, with good monitoring and early warning effects.\u003c/p\u003e"},{"header":"Declarations","content":"\u003cp\u003e\u003cstrong\u003eCompeting interests\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eNo competing interests.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eAuthors\u0026apos; contributions\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eRu Li : Data curation; programming, software development; designing computer programs; implementation of the computer code and supporting algorithms; testing of existing code components;writing the initial draft.\u003c/p\u003e\n\u003cp\u003eShancheng Chen : Ideas; formulation or evolution of overarching research goals and aims; provision of study materials and computing resources; validation; data collection; critical revision .\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eFunding\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eSupported by: National Natural Science Foundation of China (41977253) and Major Project of Natural Science Research in Higher Education Institutions of Anhui Province (KJ2019ZD11).\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eAvailability of data and materials\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThe data and information in this paper are available.\u003c/p\u003e"},{"header":"References","content":"\u003col\u003e\u003cli\u003e\u003cspan\u003eOu Jinping, Zheng Liugen, Tang Quan, et al.Source analysis of heavy metals in atmospheric particulate matter in a mining city[J].Environmental Geochemistry and Health, Volume\u0026nbsp;44, Issue 3,2022, Pages 979\u0026ndash;991, ISSN 0269\u0026ndash;4042.\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eShi Huibin, Cheng Xin, Wang Jinjin, et al. 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Tiruchirappalli, India: Institute of Electrical and Electronics Engineers Inc,2018.\u003c/span\u003e\u003c/li\u003e\u003c/ol\u003e"}],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":true,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":false,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":false,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"environmental online monitoring, Internet of Things (IoT), SOA, environmental early warning","lastPublishedDoi":"10.21203/rs.3.rs-2704725/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-2704725/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eEnvironmental contamination caused by energy extraction and processing is a persistent issue, and China\u0026rsquo;s environmental monitoring of mines is becoming increasingly rigorous as the 14th Five-Year Plan moves forward. This study proposes a distributed environmental online monitoring system to realize intelligent environmental monitoring in open-pit mines. The collection terminal utilizes PM2.5, PM10, temperature, and noise sensors for data collection. The hardware design employs an STM32 microcontroller as the control core. The communication design uses GPRS and RS-485 communication technologies to transmit data, and the software architecture utilizes a modular approach for data cleaning, data analysis, and data mining to achieve early warning and environmental quality evaluation in mining zones. The distributed environmental online monitoring system is tested in a mine, and the test data show the feasibility and effectiveness of the system. Good results on intelligently monitoring the environmental quality of the mine site are obtained.\u003c/p\u003e","manuscriptTitle":"Distributed Environment Online Monitoring System Based on SOA","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2023-03-24 16:13:15","doi":"10.21203/rs.3.rs-2704725/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"04e390c0-bc39-4e03-a234-0d108a08f02f","owner":[],"postedDate":"March 24th, 2023","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2023-04-19T03:59:12+00:00","versionOfRecord":[],"versionCreatedAt":"2023-03-24 16:13:15","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-2704725","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-2704725","identity":"rs-2704725","version":["v1"]},"buildId":"WrCJVZZCHTDjtuVLN7oU0","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}