CN1873716A - Long-range wireless monitoring method and equipment for pollution discharge based on geographical information system - Google Patents
Long-range wireless monitoring method and equipment for pollution discharge based on geographical information system Download PDFInfo
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- CN1873716A CN1873716A CN 200610051100 CN200610051100A CN1873716A CN 1873716 A CN1873716 A CN 1873716A CN 200610051100 CN200610051100 CN 200610051100 CN 200610051100 A CN200610051100 A CN 200610051100A CN 1873716 A CN1873716 A CN 1873716A
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Abstract
The invention discloses a pollution discharge remote monitoring method and device based on Geographical Information System (GIS). And the method sets 1-10 central stations according to needs; installing data processing and monitoring software based on GIS platform in the monitoring computers of the central stations, where the software makes geographical distribution, information description and forecast analysis of pollution sources clear under the support of spatial geographical information and electronic map; arranging unattended monitoring station on the pollution discharge side of each monitored enterprise, where the central station and the monitoring station make information transmission between them through mobile communication network or Internet in different networking modes under the support of communication software. And the invention can continuously and automatically monitor pollution discharge conditions of enterprises, and convenient to establish a large-scale pollution monitoring network, even a national pollution monitoring network.
Description
Technical field
The present invention relates to a kind of Remote Monitoring Technology, particularly a kind of remote monitoring method and device based on the Geographic Information System blowdown.
Background technology
Improvement ecology and environment are the significant problems concerning the sustainable development of socio-economy and people's living standard raising.But owing to ordering about of economic interests; also some environmental protection of enterprise consciousness is thin; the waste water of random exhaust emission environment; waste gas, waste residues etc. are although our environmental protection personnel are in order to protect ecology and environment for a long time; done a large amount of work; but the monitoring of pollutant discharge of enterprise is still rested on artificial fixed point regularly do the instantaneous sampling analysis, can not reflect correctly that like this pollutant discharge of enterprise continuous dynamic changes, can not in time find incident and the pollution that causes sharply changes.To definitely grasp the present situation of pollutant discharge of enterprise, find the ANOMALOUS VARIATIONS of environment as early as possible, make the environmental pollution forecast rapidly, in time follow the tracks of pollution source, just need carry out automatic monitor for continuously pollution source.If but set up wired pollution monitoring network, need to drop into a large amount of funds, some enterprise does not afford to do yet, and country also is difficult to burden fully, and wired pollution monitoring network, be difficult to also accomplish that to large-scale monitoring particularly nationwide monitoring is sometimes because the resettlement of enterprise, or the resettlement of monitoring center, also can cause the inefficacy of original input, also need overlapping investment, repeat networking.Cause the waste of fund.In addition because the maintenance of circuit also needs to drop into manpower and materials.So should seek out a kind of effectively, economical and practical solution.
Summary of the invention
The objective of the invention is to: remote monitoring method and device that a kind of blowdown based on Geographic Information System is provided, it is based on pollutant discharge of enterprise (waste water, the waste gas) remote wireless monitoring system that Geographic Information System (GIS) and mobile communication public network or the Internet are set up, the networking small investment, the monitoring station unmanned, can be under the support of spatial geographic information and electronic chart, depict pollutant discharge of enterprise pollution prediction figure, for environmental protection is managed department and relevant government department provides decision-making foundation.
The present invention is achieved in that a kind of blowdown long-range wireless monitoring method based on Geographic Information System, and this method is that 1 to 10 central station is set as required; Data processing and monitoring software based on the GIS platform exploitation are installed in the supervisory control comuter of central station, this software comes into plain view geographic distribution, information description and the forecast analysis of pollution source under the support of spatial geographic information, spatial database and electronic chart; Disposal of pollutants mouth in each monitored enterprise is provided with unattended monitoring station, and central station adopts different networking mode to transmit information by wireless network or the Internet with the monitoring station under the support of communication software.
The remote monitoring method and the device blowdown long-range wireless monitoring method of above-mentioned blowdown based on Geographic Information System, the networking mode of central station and monitoring station has two kinds: a kind of is to set up the data processing centre (DPC) with mobile communication gateway, make full use of mobile radio communication or the Internet, carry out the real-time transmission of data with the form of GSM/GPRS/CDMA short message or TCP/IP packet; Another kind is the networking mode that adopts point-to-point GSM/GPRS/CDMA short message, and each central station and each monitoring station are by the direct Data transmission of GSM/GPRS/CDMA short message.
Above-mentioned blowdown long-range wireless monitoring method based on Geographic Information System, central station is made up of with the computing machine that monitoring and process software are installed Data Receiving and sending module; The operation in 24 hours of Data Receiving and sending module, be responsible for receiving the data of each monitoring station and preserving, also be responsible for simultaneously the steering order of central station is sent to each monitoring station, when monitoring of the computer starting of central station and process software, the data that Data Receiving and sending module will receive automatically are sent to computing machine, this software is according to the spatial geographical locations of enterprise, enterprise's space environment information, pollutant discharge of enterprise index and blowdown flow rate, set up spatial database, utilize the spatial mathematic computing, objectively the pollution condition of enterprise and environment is predicted, analyze and handle.
Aforesaid blowdown long-range wireless monitoring method based on Geographic Information System, all management and the control of monitoring station are carried out by the central station operated from a distance, the monitoring station is provided with 24 hours online pollution pick-up transducers, the pollution signal that pick-up transducers will collect passes to become and send device, become the pollution signal that send device to collect and pass to data acquisition module, data acquisition module is connected with controller and data processing module by 40 pin plugs, controller and data processing module with data processing after, give wireless communication module with data transfer, wireless communication module sends the signal that conversion of signals becomes wireless network or the Internet to discern, and wireless communication module also is responsible for receiving the steering order from central station.
A kind of blowdown long-distance wireless monitoring device based on Geographic Information System, this device by one or more monitoring station and more than one or the central station below ten form, each monitoring station is connected by mobile radio communication or the Internet radio with each central station.
Above-mentioned blowdown long-distance wireless monitoring device based on Geographic Information System, central station comprises wireless communication module 1, preset communication software in the wireless communication module 1, wireless communication module 1 is provided with antenna, wireless communication module 1 is connected with controller and data processing module 2, controller and data processing module 2 are connected with supervisory control comuter 3, data processing and monitoring software based on the GIS platform exploitation are installed in the supervisory control comuter 3, central station also comprises power supply guarantee and control system 4, power supply guarantee and control system 4 and wireless communication module 1, controller and data processing module 2 are connected with supervisory control comuter 3.
Aforesaid blowdown long-distance wireless monitoring device based on Geographic Information System, the monitoring station comprises wireless communication module 1, preset communication software in the wireless communication module 1, wireless communication module 1 is provided with antenna, and wireless communication module 1 connects controller and data processing module 2, interface and data acquisition module 5, transmitter 6 and sensor 7 successively; Wireless communication module 1 also is connected power supply guarantee and control system 4 with controller and data processing module 2.
The above-mentioned blowdown long-distance wireless monitoring device based on Geographic Information System, power supply guarantee and control system 4 comprise power-supply controller of electric 8, power-supply controller of electric 8 and transformation and rectifier 9,24AH accumulator 10 back output direct current 12V power supplys in parallel.
Compared with prior art, monitoring method of the present invention and device, employing is set up pollutant discharge of enterprise (waste water based on Geographic Information System and mobile communication public network or the Internet, waste gas) remote wireless monitoring system, the networking small investment, the monitoring station unmanned, can be under the support of spatial geographic information and electronic chart, the geographic distribution and the space density of pollution source are come into plain view, the application of raising system and visual degree, realize the multifaceted inquiry of multi-angle, simultaneously, according to the geographic position of enterprise, enterprise's space environment information, pollutant discharge of enterprise index and blowdown flow rate are set up spatial database, utilize the spatial mathematic computing, objectively the pollution condition of enterprise and environment is analyzed, can be depicted pollutant discharge of enterprise pollution prediction figure, being convenient to environmental protection management department and relevant government department provides decision-making foundation.Systemic-function is abundant, has covered monitoring station control, index off-limit alarm, pollutant discharge of enterprise management, the analysis of blowdown continuous dynamic, report form processing etc.
Description of drawings
Accompanying drawing 1 is networking mode one structural drawing of the present invention;
Accompanying drawing 2 is networking mode two structural drawing of the present invention;
Accompanying drawing 3 is power supply control of the present invention and safeguards system structural drawing;
Accompanying drawing 4 is central station structural drawing of the present invention;
Accompanying drawing 5 is monitoring station of the present invention structural drawing;
Embodiment
Embodiments of the invention: the long-range wireless monitoring method of pollutant discharge of enterprise of the present invention and device, its major part comprises central station and monitoring station, reaches the cordless communication network based on mobile communication or the Internet.The networking mode of monitoring station and central station has two kinds: as shown in Figure 1 a kind of, be to set up data processing centre (DPC) with mobile communication gateway, make full use of the networking of existing resource the Internet, each monitoring station utilizes the form of mobile communication GSM/GPRS/CDMA with TCP/IP packet or short message, data processing centre (DPC) to system reports and submits data, data processing centre (DPC) is with the form of TCP/IP packet or short message, reports and submits data by the Internet or mobile communication GSM/GPRS/CDMA in real time to each central station (province,, city, enterprise etc.); Another kind is to adopt point-to-point short message (SMS) networking mode as shown in Figure 2, and characteristics are to utilize the exchange of short messages center of commmunication company, and each monitoring station and each central station directly transmit data by short message.
Be equipped with power supply control and safeguards system in central station and monitoring station, as shown in Figure 3, it is by power-supply controller of electric, 24AH accumulator and convert the 220V alternating current to 12V galvanic vertoro and form.When the 220V AC outage, power to system by the accumulator of 24AH automatically, guarantee the normal operation of system.
Each module of central station and monitoring station is connected by data-interface, all data-interfaces of the present invention are all supported multiple standards digital interface (as RS-485/422, RS-232 and Ethernet interface) and are supported coding protocol (as MODBUS and custom protocol), interface of the present invention also has 12 8 passages and 8 A/D analog digitals conversions of 8 passages, supports the input of 4-20mA or 0-10V industrial standard simulating signal and non-standard simulating signal.
Can set up central station earlier during concrete enforcement: the composition of central station as shown in Figure 4.Central station is made up of wireless communication module, controller and data processing module, data acquisition module, the computing machine that enterprise pollution source information process software is installed and power supply control and safeguards system.The wireless communication module of central station is equipped with enterprise pollution source information process software based on Geographic Information System successively with in the computing machine of controller and data processing module, data acquisition module, central station.This software is according to spatial geographical locations, enterprise's space environment information, pollutant discharge of enterprise index and the blowdown flow rate of enterprise, set up spatial database, carry out computing according to the mathematical model that the assessment of enterprise pollution situation is set up, objectively the pollution condition of enterprise and environment is predicted, analyzed and handles.The power supply control and the safeguards system of central station provide stable 12V direct supply to each module and computing machine.
In the wireless communication module of central station communication chip is installed, and presets communications control software, communication chip is selected general GSM chip, outstanding data communication function, special designs.Module is made up of antenna, GSM chip, SIM card seat, RS-232 socket, peripheral circuit and device, and the GSM chip is selected for use with GSM phase2/2+ compatibility, supports double frequency (GSM/900 and GSM/1800), met etsi standard GSM0707 and GSM0705.Communications control software is supported the mobile communication environment that GSM/GPRS/CDMA is commonly used at present.Software is controlled wireless communication module with the AT instruction.The AT instruction is a whole set of instruction that main mobile phone manufacturer NOKIA, Erics.son, Motorola and HP develop for GSM jointly.
Data processing and monitoring software are installed in the computing machine of central station are divided into enterprise version and two versions of middle heart.Because enterprise version is only monitored each monitoring station of this enterprises, so function is simple relatively, has functions such as monitoring station monitoring, Data Receiving, data processing and pattern demonstration, report form processing and operator's management.
Middle heart is developed based on Geographic Information System.Software adopts Object Oriented method, C/S structure.Several data base management systems such as Sybase, Oracle, SQL Server can be adapted to, Geographic Information System development platform can be selected for use, for example: the Mapinfo mapx of Mapinfo company, the MapObject of Arcinfo company etc. based on the control exploitation.Software has been realized the indefinite scale convergent-divergent, roaming full figure, functions such as quick location, monitoring station.Under the support of spatial geographic information and electronic chart, make the geographic distribution of pollution source, information description and forecast analysis come into plain view, the application and the visual degree of system have been improved, realized the multifaceted inquiry of multi-angle, the related real-time information and the space environment information of monitoring station on electronic chart, made things convenient for the management of system to extensive monitoring station group, simultaneously, geographic position according to enterprise, pollutant discharge of enterprise index and blowdown flow rate, objectively the pollution condition of enterprise and environment is analyzed, utilize the function of Geographic Information System, can depict pollutant discharge of enterprise pollution prediction areal map on electronic chart, being convenient to environmental protection management department and relevant government department provides decision-making foundation.Software has electronic chart and the multiple website inquiry mode of form, has to report to the police and prompt facility.Have real time data display mode intuitively, as the dynamic number strong point, rod figure, pointer, real-time curves etc. can reflect the development trend of each monitoring index clearly.Aspect the blowdown enterprise information management, software has city, enterprise place basic information management, enterprise's basic information management, monitoring station basic information management and enterprise environmental information analytic function.Aspect the blowdown information inquiry, have the inquiry of pollutant discharge of enterprise message breath, the inquiry of pollutant discharge of enterprise amount, enterprise's detailed data inquiry, enterprise's superscale blowdown inquiry, the inquiry of pollutant discharge of enterprise concentration over-standard etc.Aspect the remote supervisory of monitoring station, has monitoring station Long-distance Control panel, can send various supervision orders to the appointment monitoring station, for example: ON/OFF is specified monitoring station, communication line and monitoring station self check, request msg, central station is set, calibrates the monitoring station clock, is inquired about each operational factor of monitoring station etc.; Have monitoring station alarm threshold setting, gather and report and submit functions such as cycle data and frequency configuration.
After central station is set up, set up the monitoring station of monitored enterprise again.The composition of monitoring station as shown in Figure 5.The monitoring station is made up of wireless communication module, controller and data processing module, data acquisition module, transmitter, sensor and power supply control and safeguards system.
In the wireless communication module of monitoring station communication chip is installed, and preset communications control software, the different communication mode that wireless communication module uses according to each enterprise, adopt replacing communication chip and software setting to adjust, when for example using SMS to communicate by letter, select Q2403 series or Q24X6 family chip for use, when using cdma communication with GPRS, can select the Q2338 chip for use, and communication software is adjusted accordingly.Wireless communication module sends the mode of data-signal with short message through antenna.
The wireless communication module of monitoring station is connected with controller and data processing module, the C8051F020 single-chip microcomputer that U.S. Cygnal company produces is installed in controller and data processing module, this single-chip microcomputer is the mixed-signal system level MCU chip that is integrated on the chip piece, have to endorse in the CIP-51 of 8051 compatibilities of high-speed flow line structure and reach 25MIPS, have 12 8 passage ADC on the sheet, two 12 DAC renewal sequential able to programme, two UART serial line interfaces, 5 16 general bit timing devices, the programmable counter of 5 seizure/comparison modules/timer array.Serial line interface extends to 6 and 88 passage ADC of increase through software programming.
Controller and data processing module were gathered 1 secondary data in per 0.1 second to simulation signal generator, regularly carry out data screening, the standard digital port data is adopted shake hands agreement or timing acquiring, after each port data collection is finished, transmission cycle and frequency according to the central station regulation, add transmitting time and date, accumulate data set, for example: flow, temperature, humidity, pressure, oxygen, carbon dioxide, sulphuric dioxide, time, date; Give each central station by the wireless communication module timed sending.
Controller and data processing module are connected with the FPDP of data acquisition module by 40 pin plugs, to guarantee the unimpeded of data acquisition and data processing of information.Data acquisition module is connected with sensor through transmitter.
Sewage draining exit (flue, sewage-farm) in enterprise repairs expansion (water or cigarette) road, is convenient to the sensor installation probe or adopts water pump.Sensor should select for use State Environmental Protection Administration to approve, and the civil engineering of sensor and transmitting system is installed according to the requirement of different sensors and implemented.
The blowdown situation of enterprise is depended in the selection of sensor, and for example: power-plant waste (coal dust) monitoring station is generally selected for use, online flowmeter, online PH analyser, online COD analyser etc.; Generating plant waste gas (flue gas) monitoring station is generally selected for use, online flowmeter, online temperature/humidity measuring instrument, online pressure-measuring device, oxygen measuring device, carbon dioxide meter, sulphuric dioxide measuring instrument etc.; Chemical fertilizer factory generally selects for use at the effluent monitoring station: online flowmeter, online nh 3-n analyser, online chloride analyzer, online PH analyser etc.In actual applications, most of sensor is selected 4-20mA, the output of 0-10V standard analog signal for use.
The monitoring station is the long-range unattended duty monitoring means of system, is placed in the fume emission mouth or the sewage-farm outlet of monitored enterprise, and pollutant discharge of enterprise is carried out 24 hours on-line monitorings.All management and the control of monitoring station are carried out by the central station operated from a distance.System can store data 3 months, and possessed field data and read (RS-232) function.System has real-time data acquisition, data screening, to data processing functions such as each monitoring index early warning processing, have by timing data transmission of central station stipulated time and remote command execution function.In addition, system also has communication channel and detects, inserts sensor interface detection, System self-test, communication line self check, power supply detection and control, mobile phone request msg and handle, support simultaneously functions such as the request of data of 10 central stations and service.
After each central station and each monitoring station install, can debug respectively, after debugging is passed through, carry out the unified uniting and adjustment of each central station and each monitoring station again, and pass through by inspection.
Claims (8)
1, a kind of blowdown long-range wireless monitoring method based on Geographic Information System is characterized in that: this method is to be provided with more than 1 or the central station below 10; Data processing and monitoring software based on the GIS platform exploitation are installed in the supervisory control comuter of central station, disposal of pollutants mouth in each monitored enterprise is provided with unattended monitoring station, and wireless network or the Internet-delivered information are passed through in central station and monitoring station under the support of communication software.
2, the blowdown long-range wireless monitoring method based on Geographic Information System according to claim 1, it is characterized in that: the networking mode of central station and monitoring station has two kinds: a kind of is to set up the data processing centre (DPC) with mobile communication gateway, utilize mobile radio communication or the Internet, carry out the real-time transmission of data with the form of GSM/GPRS/CDMA short message or TCP/IP packet; Another kind is the networking mode that adopts point-to-point GSM/GPRS/CDMA short message, and each central station and each monitoring station are by the direct Data transmission of GSM/GPRS/CDMA short message.
3, the blowdown long-range wireless monitoring method based on Geographic Information System according to claim 1 is characterized in that: central station is made up of with the computing machine that monitoring and process software are installed Data Receiving and sending module; The operation in 24 hours of Data Receiving and sending module, receive the data and the preservation of each monitoring station, steering order with central station sends to each monitoring station simultaneously, when monitoring of the computer starting of central station and process software, the data that Data Receiving and sending module will receive automatically are sent to computing machine, Geographic Information System (GIS) software in the computing machine is according to the spatial geographical locations of enterprise, enterprise's space environment information, pollutant discharge of enterprise index and blowdown flow rate, set up spatial database, carry out computing, objectively the pollution condition of enterprise and environment is predicted, analyze and handle.
4, blowdown long-range wireless monitoring method based on Geographic Information System according to claim 1, it is characterized in that: all management and the control of monitoring station are carried out by the central station operated from a distance, the monitoring station is provided with 24 hours online pollution pick-up transducers, the pollution signal that pick-up transducers will collect passes to become and send device, become the pollution signal that send device to collect and pass to data acquisition module, data acquisition module is connected with controller and data processing module by 40 pin plugs, controller and data processing module with data processing after, pass to wireless communication module, wireless communication module sends the signal that conversion of signals becomes wireless network or the Internet to discern, and wireless communication module also receives the steering order from central station.
5, a kind of blowdown long-distance wireless monitoring device based on Geographic Information System, it is characterized in that: this device by one or more monitoring station and more than one or the central station below ten form, each monitoring station is connected by mobile radio communication or the Internet radio with each central station.
6, blowdown long-distance wireless monitoring device based on Geographic Information System according to claim 5, it is characterized in that: central station comprises wireless communication module (1), wireless communication module presets communication software in (1), wireless communication module (1) is provided with antenna, wireless communication module (1) is connected with controller and data processing module (2), controller and data processing module (2) are connected with supervisory control comuter (3), data processing and monitoring software based on the GIS platform exploitation are installed in the supervisory control comuter (3), central station also comprises power supply guarantee and control system (4), power supply guarantee and control system (4) and wireless communication module (1), controller and data processing module (2) are connected with supervisory control comuter (3).
7, the blowdown long-distance wireless monitoring device based on Geographic Information System according to claim 5, it is characterized in that: the monitoring station comprises wireless communication module (1), wireless communication module presets communication software in (1), wireless communication module (1) is provided with antenna, and wireless communication module (1) connects controller and data processing module (2), interface and data acquisition module (5), transmitter (6) and sensor (7) successively; Wireless communication module (1) also is connected power supply guarantee and control system (4) with controller and data processing module (2).
8, according to claim 6 or 7 described blowdown long-distance wireless monitoring devices based on Geographic Information System, it is characterized in that: power supply guarantee and control system (4) comprise power-supply controller of electric (8), power-supply controller of electric (8) and transformation and rectifier (9), 24AH accumulator (10) back output in parallel direct current 12V power supply.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101262398B (en) * | 2007-12-14 | 2010-09-01 | 华南理工大学 | Monitoring sub-station communication network for pollution source monitoring system |
| CN102215137A (en) * | 2010-04-02 | 2011-10-12 | 北京梅泰诺通信技术股份有限公司 | Communication tower remote-monitoring system |
| CN102263806A (en) * | 2010-05-26 | 2011-11-30 | 北京梅泰诺通信技术股份有限公司 | Long-distance monitoring system of communication tower |
| CN102262144A (en) * | 2010-05-26 | 2011-11-30 | 北京梅泰诺通信技术股份有限公司 | Remote environment monitoring system |
| CN102621279A (en) * | 2012-03-15 | 2012-08-01 | 北京交通大学 | Pollutant discharge monitoring device and system |
| CN104459068A (en) * | 2014-11-14 | 2015-03-25 | 东莞理工学院城市学院 | Zigbee-application-based water quality monitoring system |
| CN104503379A (en) * | 2014-11-19 | 2015-04-08 | 安徽省德诺电子科技有限公司 | Environmental protection stealing discharge and discharge volume remote energy consumption monitoring device and management system |
| CN105467914A (en) * | 2015-12-31 | 2016-04-06 | 杭州兴洋环保科技有限公司 | GPRS early warning analysis and transmission system and method for environmental pollution factor monitoring |
| CN107991454A (en) * | 2018-01-17 | 2018-05-04 | 南开大学 | A kind of water pollution source analysis method |
| CN108769180A (en) * | 2018-05-23 | 2018-11-06 | 文丹 | A kind of long-range environment monitoring system based on technology of Internet of things |
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2006
- 2006-06-16 CN CN 200610051100 patent/CN1873716A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101262398B (en) * | 2007-12-14 | 2010-09-01 | 华南理工大学 | Monitoring sub-station communication network for pollution source monitoring system |
| CN102215137A (en) * | 2010-04-02 | 2011-10-12 | 北京梅泰诺通信技术股份有限公司 | Communication tower remote-monitoring system |
| CN102263806A (en) * | 2010-05-26 | 2011-11-30 | 北京梅泰诺通信技术股份有限公司 | Long-distance monitoring system of communication tower |
| CN102262144A (en) * | 2010-05-26 | 2011-11-30 | 北京梅泰诺通信技术股份有限公司 | Remote environment monitoring system |
| CN102621279A (en) * | 2012-03-15 | 2012-08-01 | 北京交通大学 | Pollutant discharge monitoring device and system |
| CN104459068A (en) * | 2014-11-14 | 2015-03-25 | 东莞理工学院城市学院 | Zigbee-application-based water quality monitoring system |
| CN104503379A (en) * | 2014-11-19 | 2015-04-08 | 安徽省德诺电子科技有限公司 | Environmental protection stealing discharge and discharge volume remote energy consumption monitoring device and management system |
| CN105467914A (en) * | 2015-12-31 | 2016-04-06 | 杭州兴洋环保科技有限公司 | GPRS early warning analysis and transmission system and method for environmental pollution factor monitoring |
| CN107991454A (en) * | 2018-01-17 | 2018-05-04 | 南开大学 | A kind of water pollution source analysis method |
| CN108769180A (en) * | 2018-05-23 | 2018-11-06 | 文丹 | A kind of long-range environment monitoring system based on technology of Internet of things |
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