CN111122667A - Distributed air quality monitoring device and monitoring method thereof - Google Patents
Distributed air quality monitoring device and monitoring method thereof Download PDFInfo
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- 239000000428 dust Substances 0.000 claims abstract description 12
- 238000005259 measurement Methods 0.000 claims description 48
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 46
- JCXJVPUVTGWSNB-UHFFFAOYSA-N Nitrogen dioxide Chemical compound O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims description 43
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 23
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Abstract
The invention relates to a distributed air quality monitoring device and a monitoring method thereof, which are applied to the industries of urban air monitoring networks and regional environment monitoring. The device comprises a microcontroller, a PM2.5 measuring module, a PM10 measuring module, an SO2 measuring module, an NO2 measuring module, a CO measuring module, an O3 measuring module, a VOCs measuring module and a temperature and humidity measuring module; the PM2.5 measuring module, the PM10 measuring module, the SO2 measuring module, the NO2 measuring module, the CO measuring module, the O3 measuring module, the VOCs measuring module and the temperature and humidity measuring module are connected with the microcontroller; the SO2 measuring module, the NO2 measuring module and the CO measuring module adopt electrochemical gas measuring modules, and the PM2.5 measuring module and the PM10 measuring module adopt dust measuring modules based on the laser diffraction principle.
Description
Technical Field
The invention relates to a distributed air quality monitoring device and a monitoring method thereof, which are applied to the industries of urban air monitoring networks and regional environment monitoring.
Background
The function of the air station is to sample, measure and analyze the pollutants present in the atmosphere, air, either on a fixed point, continuously or periodically. In order to monitor air, a plurality of air stations are generally set up in an environmental key city, a multi-parameter automatic monitoring instrument is installed in each station for continuous automatic monitoring, and monitoring results are stored in real time and analyzed to obtain related data. The air quality monitoring station is a basic platform for air quality control and reasonable evaluation of air quality, and is an infrastructure for urban air environment protection.
At present, according to the standard specification requirements, certain requirements are provided for the performance index and the continuity of the national standard air monitoring station, so that the system has high complexity, high hardware cost and implementation cost and the like, and the comprehensive coverage and the rapid implementation are difficult to realize. Therefore, the monitoring system of the type is applied to national and provincial monitoring sites.
With the rapid development of economy in China, the problem of environmental pollution is easily highlighted day by day, and although the environment is treated by applying billions of yuan of capital every year in China, the effect is not obvious. In order to trace back the distribution area of the pollution source, management organizations in each area and place also need an implementation scheme of area environment monitoring and high cost performance, and a distributed and regionalized monitoring system is added on the basis of the point-shaped arrangement of the national standard monitoring station.
The traditional professional monitoring systems such as national standard monitoring stations are too expensive (the cost of a single set of instruments and equipment and construction cost exceeds more than 100 ten thousand), so that the system is not suitable for batch popularization and gridding layout. Therefore, the demand of the current market for monitoring products which are low in cost, simple to install and maintain, suitable for batch and gridding is gradually increased.
As described above, in the management units of the regions, it is one of the key matters that the managers should master the conditions of the atmospheric environment, the water environment, and the like in their respective jurisdictions and understand the pollution source formation "way", and there is an urgent need for a monitoring system that is easy to implement and effective in each management unit. Therefore, in recent years, a grid-based atmospheric monitoring system is proposed in the market, which realizes digital management of the atmospheric pollutant source and dynamic change of each area by building a regional monitoring sensor network. The quasi-professional monitoring system can perform concentration change analysis according to a plurality of pollutant data monitored by the sensing terminal, form pollution tracking and cross-boundary conveying analysis reports of time, day, week and month, realize trend analysis of space-time dynamic changes of atmospheric pollutant concentrations in regions and urban areas, and provide direct basis for environment law enforcement and decision making.
The collected data and the existing standard station monitoring sites can be superposed, contrastively analyzed and calibrated through a gridding monitoring system, the two are combined, a space-time dynamic trend graph is generated, so that the atmospheric particulate matter concentration monitoring data with high density and high frequency in a whole area is obtained, the background data analysis system is used, the monitoring data is screened, calibrated, statistically analyzed and drawn through a dynamic graph, the space-time dynamic change trend analysis of the atmospheric particulate matter concentration in the whole area is realized, the pollution source is further judged, the pollutant diffusion trend is traced, the pollution source is supervised to the greatest extent, data and analysis basis are provided for environment law enforcement and decision making.
In conclusion, compared with a state control station, the product with the demand is a monitoring system which is low in cost, small in size and convenient to install and arrange, the measurement performance meets the atmosphere monitoring level, and atmospheric pollution paths and formed routes can be judged and pollution sources can be traced through arrangement quantity, data analysis and the like.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: (1) wireless real-time data transmission is realized; (2) the measurement of the conventional air quality parameters, the measurement of the temperature, the humidity and other parameters can be completed, and the over-value early warning function can be realized; (3) the system has the functions of using and positioning information, automatically reading and supplying power to the monitor by a low-power-consumption battery.
The design of the invention is mainly composed of an air quality electrochemical module, an MCU, a temperature and humidity sensor, a PM air measurement module, a GPS positioning module, a wireless transmission module, a lithium battery, a real-time clock, a FLASH and other functional modules, and the basic principle is as follows: the system is powered by a lithium battery and is powered by a solar cell panel, the equipment wakes up to work according to the timing function of a real-time clock, the measured data of various air quality modules are collected during working, the data are transmitted through a wireless module and are backed up, the system does not depend on an external power supply and transmission system, distributed installation can be realized, and the system is a novel air quality monitoring system.
In order to solve the technical problems, the invention adopts the following technical scheme:
a distributed air quality monitoring device comprises a microcontroller, a PM2.5 measuring module, a PM10 measuring module, an SO2 measuring module, an NO2 measuring module, a CO measuring module, an O3 measuring module, a VOCs measuring module and a temperature and humidity measuring module;
the PM2.5 measuring module, the PM10 measuring module, the SO2 measuring module, the NO2 measuring module, the CO measuring module, the O3 measuring module, the VOCs measuring module and the temperature and humidity measuring module are connected with the microcontroller;
the SO2 measurement module, the NO2 measurement module and the CO measurement module adopt electrochemical gas measurement modules, and the PM2.5 measurement module and the PM10 measurement module adopt dust measurement modules based on a laser diffraction principle;
the PM2.5 measurement module is used for realizing a module for measuring PM2.5 dust;
the PM10 measurement module is used for realizing PM10 dust measurement;
the SO2 measurement module is used for measuring the module of the concentration of sulfur dioxide in the atmosphere;
a NO2 measurement module for measuring the concentration of nitrogen dioxide in the atmosphere;
the CO measuring module is used for measuring the concentration of carbon monoxide in the atmosphere;
the O3 measurement module is used for measuring the module of the concentration of ozone in the atmosphere;
the VOCs measuring module is used for measuring volatile organic compounds in the atmosphere;
the temperature and humidity measuring module is used for measuring the atmospheric temperature and the air temperature and humidity;
the 8 types of measuring modules are all TTL level digital interfaces, a signal acquisition conversion circuit is arranged in the measuring modules, an external processor reads data according to a communication protocol of the external processor, and data of each measuring parameter can be realized, and TXD and RXD interfaces in the measuring modules are connected with a microcontroller.
Furthermore, the monitoring device is provided with a GPS module for positioning the monitor, the GPS information is automatically read during acquisition, and the position information is not required to be manually input;
and the NB-IOT transmission module and the GPRS transmission module realize the data interaction function of the monitor and the remote platform.
Furthermore, this monitoring devices design has the lithium cell and realizes portable confession solar cell panel, and the lithium cell is connected with the confession solar cell panel that realizes portable.
Furthermore, the monitoring device is designed with a real-time clock module and a data storage module.
A monitoring method of a distributed air quality monitoring device is characterized by comprising the following steps:
1) the pins of TXD and RXD of the PM2.5 measuring module, the PM10 measuring module, the SO2 measuring module, the NO2 measuring module, the CO measuring module, the O3 measuring module, the VOCs measuring module and the temperature and humidity measuring module are connected to the GPIO port of the microcontroller.
2) The GPS module, the NB-IOT transmission module and the GPRS module are respectively connected with a DC5V power supply, and the data interfaces are respectively connected with UART1, UART2 and UART3 ports of the microcontroller;
3) the real-time clock RTC and the data storage FLASH are respectively connected to an IIC interface and an SPI interface of the microcontroller;
4) above circuit module designs in a bottom plate PCB altogether, and the lithium cell is inside from taking charge-discharge management circuit function, and the lithium cell links to each other with bottom plate PCB through connecting terminal, and 5V solar cell panel then links to each other with the port that charges of lithium cell, realizes the function of charging.
5) After the hardware is powered on, initializing operation is carried out, wherein the main operation content is initializing port information and acquiring timing working interval information in a configuration memory as frequency information of subsequent work;
6) after initialization is finished, data acquisition is carried out, namely data of a PM2.5 measuring module, a PM10 measuring module, an SO2 measuring module, an NO2 measuring module, a CO measuring module, an O3 measuring module, a VOCs measuring module and a temperature and humidity measuring module are collected in a polling mode, and data information is acquired according to communication protocols of the modules respectively;
7) after data information is acquired, backup data in a memory is read and packaged together for uploading through GPRS, if the uploading is successful, a platform issues confirmation information, after the confirmation platform receives the confirmation information, equipment configures each module into a low power consumption mode, reduces power consumption and sleeps until a next interrupt signal is generated by RTC, if the platform does not send and receive the confirmation information, the platform is regarded as abnormal uploading data, local backup needs to be carried out on the acquired data, and the data is uploaded until the next acquisition, so that the data is prevented from being lost;
8) and the system works by the interruption of the alarm generated by the RTC to switch the working state and the low-power consumption state.
The basic principle is as follows: the system is powered by a lithium battery and is powered by a solar cell panel, the equipment wakes up to work according to the timing function of a real-time clock, the measured data of various air quality modules are collected during working, the data are transmitted through a wireless module and are backed up, the system does not depend on an external power supply and transmission system, distributed installation can be realized, and the system is a novel air quality monitoring system.
The air quality measuring module realizes the measuring function of each parameter gas. The ZE12 type electrochemical module is adopted, and the gases such as CO, SO2, NO2 and O3 existing in the air are detected by utilizing the electrochemical principle, SO that the selectivity and the stability are good. A built-in temperature sensor can perform temperature compensation; meanwhile, the digital voltage-controlled switch has digital output and analog voltage output, and is convenient to use.
Its function adopts ZH03B module for measuring the suspended solid concentration in the air, and it adopts the laser diffraction principle, detects the dust particulate matter that exists in the air, has good uniformity, stability, has serial ports output. The measuring range is 0-1000 ug/m for carrying out thin film cultivation, and the minimum resolution grain diameter is 0.3 mu m. The working current is 120mA, the standby current is 20mA, and the working voltage is 5V.
The VOCs have the functions of measuring the concentration of volatile organic compounds, the adopted mode is a photoion module ZI01 which is a high-performance PID series module, the photoion gas sensor and the high-performance microprocessor are adopted, ultraviolet light generated by an ion lamp is used for irradiating and bombarding target gas, the target gas is ionized after absorbing enough ultraviolet light energy, and the concentration of the target gas can be detected by detecting micro current generated after ionization of the gas.
And the position of the monitoring equipment is positioned, and the position information is uploaded, so that the platform can conveniently display the position. The method is realized by adopting a standard GPS module, the positioning precision of the module is 2.5mCEP, the working power supply is 3.3V, and the working current is 10 mA.
The design considers that the field working condition of the system is complex, and the protection after wiring, the reliability of power supply and the like are difficult to guarantee, so that the monitor is designed in a lithium battery power supply mode, and the problem of field power supply is thoroughly solved. Meanwhile, a wireless data transmission module is arranged in the system, so that the problem of data transmission is solved, and the wireless performance of the system is realized. In order to realize real-time measurement, the system control part can realize automatic control, and a matched protective box is designed to ensure that the system can be normally used outdoors, so that distributed installation can be realized. The equipment shell is realized in a waterproof box mode and a louver box mode, the structure is integrated, the gas detection module is placed inside the tower-type louver box, and the controller, the transmission module, the battery pack and the like are placed inside the waterproof box.
In summary, the monitor of the present invention adopts a low power consumption design, a built-in battery, a wireless transmission design, and the like through the design of each module, so as to realize a monitoring device and a method thereof, wherein the monitoring device has low cost, small volume, and is convenient to install and arrange, the measurement performance meets the atmosphere monitoring level, and the monitoring device can judge the atmosphere pollution path and the formed route through the arrangement quantity, data analysis, and the like, and trace the pollution source.
Drawings
FIG. 1 is a functional block diagram of an air quality monitoring device of the present invention;
FIG. 2 is a hardware flow diagram of the present invention;
FIG. 3 is a circuit diagram of an MCU of the air quality monitoring device of the present invention;
FIG. 4 is a FLASH circuit design diagram of the air quality monitoring device of the present invention;
FIG. 5 is a schematic diagram of an RTC design of the air quality monitoring apparatus of the present invention;
FIG. 6 shows a lithium battery charging circuit design according to the present invention;
FIG. 7 is a circuit diagram of the measurement modules of the present invention.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
a distributed air quality monitoring device comprises a microcontroller 12, a PM2.5 measuring module 1, a PM10 measuring module 9, an SO2 measuring module 2, an NO2 measuring module 11, a CO measuring module 16, an O3 measuring module 10, a VOCs measuring module 13 and a temperature and humidity measuring module 3;
the PM2.5 measuring module 1, the PM10 measuring module 9, the SO2 measuring module 2, the NO2 measuring module 11, the CO measuring module 16, the O3 measuring module 10, the VOCs measuring module 13 and the temperature and humidity measuring module 3 are connected with the microcontroller 12;
the SO2 measurement module 2, the NO2 measurement module 11 and the CO measurement module 16 adopt electrochemical gas measurement modules, and the PM2.5 measurement module 1 and the PM10 measurement module 9 adopt dust measurement modules based on the laser diffraction principle;
the PM2.5 measurement module 1 is a module for realizing PM2.5 dust measurement;
the PM10 measurement module 9 is used for realizing PM10 dust measurement;
the SO2 measurement module 2 is used for measuring the concentration of sulfur dioxide in the atmosphere;
the NO2 measuring module 11 is used for measuring the concentration of nitrogen dioxide in the atmosphere;
the CO measuring module 16 is used for measuring the concentration of carbon monoxide in the atmosphere;
the O3 measurement module 10 is used for measuring the ozone concentration in the atmosphere;
the VOCs measuring module 13 is a module for measuring volatile organic compounds in the atmosphere;
the temperature and humidity measuring module 3 is a module for measuring the atmospheric temperature and the air temperature and humidity;
the 8 types of measuring modules are all TTL level digital interfaces, a signal acquisition conversion circuit is arranged in the measuring modules, an external processor reads data according to a communication protocol of the external processor, and data of each measuring parameter can be realized, and TXD and RXD interfaces in the measuring modules are connected with a microcontroller.
The monitoring device is provided with a GPS module 4 for positioning the monitor, automatically reads GPS information during acquisition, and does not need manual input of the position information; besides data acquisition, according to engineering measurement requirements, the monitor can realize automatic positioning, wireless data transmission and low-power-consumption power supply, and can be applied to a plurality of scenes.
And the NB-IOT transmission module 5 and the GPRS transmission module 6 realize the data interaction function of the monitor and the remote platform.
This monitoring devices design has lithium cell 8 and realizes portable confession solar cell panel 15, and lithium cell 8 is connected with realization portable confession solar cell panel 15. The device is a low-power consumption monitoring device, a lithium battery is arranged in the device and used as a system power supply, and the practicability of the system is improved.
The monitoring device is designed with a real-time clock module 7 and a data storage module 14. The device is a low-power consumption monitoring device, intermittently works in a timing working mode, automatically stores data,
a monitoring method of a distributed air quality monitoring device comprises the following steps:
1. the pins of the PM2.5 measuring module 1, the PM10 measuring module 9, the SO2 measuring module 2, the NO2 measuring module 11, the CO measuring module 16, the O3 measuring module 10, the VOCs measuring module 13 and the TXD and RXD of the temperature and humidity measuring module 3 are connected to GPIO ports of the microcontroller.
2. The GPS module 4, the NB-IOT transmission module 5 and the GPRS module 6 are respectively connected to a DC5V power supply, and the data interfaces are respectively connected to UART1, UART2 and UART3 ports of the microcontroller 12;
3. the real-time clock RTC7 and the data storage FLASH14 are respectively connected to the IIC interface and the SPI interface of the microcontroller;
4. above circuit module designs in a bottom plate PCB altogether, and lithium cell 8 is inside from taking charge-discharge management circuit function, and the lithium cell links to each other through connecting terminal and bottom plate PCB, and 5V solar cell panel then links to each other with the port that charges of lithium cell, realizes the function of charging.
5. After the hardware is powered on, initialization operation is carried out, wherein the main operation content is port initialization information and timing working interval information in a configuration memory is obtained and is used as frequency information of subsequent work;
6. after the initialization is finished, data acquisition is carried out, namely data of the PM2.5 measuring module 1, the PM10 measuring module 9, the SO2 measuring module 2, the NO2 measuring module 11, the CO measuring module 16, the O3 measuring module 10, the VOCs measuring module 13 and the temperature and humidity measuring module 3 are collected in a polling mode, and data information is acquired according to communication protocols of the modules respectively;
7. after data information is acquired, backup data in a memory is read and packaged together for uploading through GPRS, if the uploading is successful, a platform issues confirmation information, after the confirmation platform receives the confirmation information, equipment configures each module into a low power consumption mode, reduces power consumption and sleeps until a next interrupt signal is generated by RTC, if the platform does not send and receive the confirmation information, the data is considered to be not normally uploaded, the acquired data needs to be locally backed up, and the data is uploaded until the data is acquired next time, so that the data is prevented from being lost;
8. the system works by the interruption of the alarm generated by the RTC to switch the working state and the low power consumption state.
The basic principle is as follows: the system is powered by a lithium battery and is powered by a solar cell panel, the equipment wakes up to work according to the timing function of a real-time clock, the measured data of various air quality modules are collected during working, the data are transmitted through a wireless module and are backed up, the system does not depend on an external power supply and transmission system, distributed installation can be realized, and the system is a novel air quality monitoring system.
The air quality measuring module realizes the measuring function of each parameter gas. The ZE12 type electrochemical module is adopted, and the gases such as CO, SO2, NO2 and O3 existing in the air are detected by utilizing the electrochemical principle, SO that the selectivity and the stability are good. A built-in temperature sensor can perform temperature compensation; meanwhile, the digital voltage-controlled switch has digital output and analog voltage output, and is convenient to use.
Its function adopts ZH03B module for measuring the suspended solid concentration in the air, and it adopts the laser diffraction principle, detects the dust particulate matter that exists in the air, has good uniformity, stability, has serial ports output. The measuring range is 0-1000 ug/m for carrying out thin film cultivation, and the minimum resolution grain diameter is 0.3 mu m. The working current is 120mA, the standby current is 20mA, and the working voltage is 5V.
The VOCs have the functions of measuring the concentration of volatile organic compounds, the adopted mode is a photoion module ZI01 which is a high-performance PID series module, the photoion gas sensor and the high-performance microprocessor are adopted, ultraviolet light generated by an ion lamp is used for irradiating and bombarding target gas, the target gas is ionized after absorbing enough ultraviolet light energy, and the concentration of the target gas can be detected by detecting micro current generated after ionization of the gas.
And the position of the monitoring equipment is positioned, and the position information is uploaded, so that the platform can conveniently display the position. The method is realized by adopting a standard GPS module, the positioning precision of the module is 2.5mCEP, the working power supply is 3.3V, and the working current is 10 mA.
The design considers that the field working condition of the system is complex, and the protection after wiring, the reliability of power supply and the like are difficult to guarantee, so that the monitor is designed in a lithium battery power supply mode, and the problem of field power supply is thoroughly solved. Meanwhile, a wireless data transmission module is arranged in the system, so that the problem of data transmission is solved, and the wireless performance of the system is realized. In order to realize real-time measurement, the system control part can realize automatic control, and a matched protective box is designed to ensure that the system can be normally used outdoors, so that distributed installation can be realized. The equipment shell is realized in a waterproof box mode and a louver box mode, the structure is integrated, the gas detection module is placed inside the tower-type louver box, and the controller, the transmission module, the battery pack and the like are placed inside the waterproof box.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a distributing type air quality monitoring device which characterized in that: the device comprises a microcontroller (12), a PM2.5 measuring module (1), a PM10 measuring module (9), an SO2 measuring module (2), an NO2 measuring module (11), a CO measuring module (16), an O3 measuring module (10), a VOCs measuring module (13) and a temperature and humidity measuring module (3);
the PM2.5 measuring module (1), the PM10 measuring module (9), the SO2 measuring module (2), the NO2 measuring module (11), the CO measuring module (16), the O3 measuring module (10), the VOCs measuring module (13) and the temperature and humidity measuring module (3) are connected with the microcontroller (12);
wherein the SO2 measurement module (2), the NO2 measurement module (11) and the CO measurement module (16) adopt electrochemical gas measurement modules, and the PM2.5 measurement module (1) and the PM10 measurement module (9) adopt dust measurement modules based on the laser diffraction principle;
the PM2.5 measurement module (1) is used for realizing a module for measuring PM2.5 dust;
a PM10 measurement module (9) is used for realizing PM10 dust measurement;
the SO2 measurement module (2) is used for measuring the module of the concentration of sulfur dioxide in the atmosphere;
a NO2 measurement module (11) for measuring the concentration of nitrogen dioxide in the atmosphere;
the CO measuring module (16) is used for measuring the concentration of carbon monoxide in the atmosphere;
the O3 measurement module (10) is used for measuring the module of the concentration of ozone in the atmosphere;
the VOCs measuring module (13) is a module for measuring volatile organic compounds in the atmosphere;
the temperature and humidity measuring module (3) is used for measuring the atmospheric temperature and the air temperature and humidity;
the 8 types of measuring modules are all TTL level digital interfaces, a signal acquisition conversion circuit is arranged in the measuring modules, an external processor reads data according to a communication protocol of the external processor, and data of each measuring parameter can be realized, and TXD and RXD interfaces in the measuring modules are connected with a microcontroller.
2. The distributed air quality monitoring apparatus of claim 1, wherein: the monitoring device is provided with a GPS module (4) for positioning the monitor, automatically reads GPS information during acquisition, and does not need manual input of the position information;
and the NB-IOT transmission module (5) and the GPRS transmission module (6) realize the data interaction function of the monitor and the remote platform.
3. The distributed air quality monitoring apparatus of claim 1, wherein: this monitoring devices design has lithium cell (8) and realizes portable confession solar cell panel (15), and lithium cell (8) are connected with the confession solar cell panel (15) that realize portable.
4. The distributed air quality monitoring apparatus of claim 1, wherein: the monitoring device is designed with a real-time clock module (7) and a data storage module (14).
5. A method of monitoring a distributed air quality monitoring apparatus according to claims 1-4, characterized in that the method comprises the steps of:
A) pins of TXD and RXD of a PM2.5 measuring module (1), a PM10 measuring module (9), an SO2 measuring module (2), a NO2 measuring module (11), a CO measuring module (16), an O3 measuring module (10), a VOCs measuring module (13) and a temperature and humidity measuring module (3) are connected to GPIO ports of the microcontroller;
B) the GPS module (4), the NB-IOT transmission module (5) and the GPRS module (6) are respectively connected with a DC5V power supply, and the data interfaces are respectively connected with UART1, UART2 and UART3 ports of the microcontroller (12);
C) the real-time clock RTC (7) and the data storage FLASH (14) are respectively connected to an IIC interface and an SPI interface of the microcontroller;
D) the circuit modules are designed in a bottom board PCB, the lithium battery (8) is internally provided with a charge-discharge management circuit function, the lithium battery is connected with the bottom board PCB through a connecting terminal, and the 5V solar panel is connected with a charging port of the lithium battery to realize the charging function;
E) after the hardware is powered on, initializing operation is carried out, wherein the main operation content is initializing port information and acquiring timing working interval information in a configuration memory as frequency information of subsequent work;
F) after initialization is finished, data acquisition is carried out, namely data of a PM2.5 measuring module (1), a PM10 measuring module (9), an SO2 measuring module (2), an NO2 measuring module (11), a CO measuring module (16), an O3 measuring module (10), a VOCs measuring module (13) and a temperature and humidity measuring module (3) are polled and acquired once, and data information is acquired according to communication protocols of the modules respectively;
G) after data information is acquired, backup data in a memory is read and packaged together for uploading through GPRS, if the uploading is successful, a platform issues confirmation information, after the confirmation platform receives the confirmation information, equipment configures each module into a low power consumption mode, reduces power consumption and sleeps until a next interrupt signal is generated by RTC, if the platform does not send and receive the confirmation information, the platform is regarded as abnormal uploading data, local backup needs to be carried out on the acquired data, and the data is uploaded until the next acquisition, so that the data is prevented from being lost;
H) and the system works by the interruption of the alarm generated by the RTC to switch the working state and the low-power consumption state.
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| CN201911390122.5A CN111122667A (en) | 2019-12-30 | 2019-12-30 | Distributed air quality monitoring device and monitoring method thereof |
| PCT/CN2020/134492 WO2021135855A1 (en) | 2019-12-30 | 2020-12-08 | Distributed air quality monitoring device and monitoring method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111564031A (en) * | 2020-05-26 | 2020-08-21 | 河南赛贝电子科技有限公司 | Gridding atmospheric pollution emergency mobile monitoring system |
| CN111650251A (en) * | 2020-07-07 | 2020-09-11 | 林伟立 | Ozone sonde based on gas-sensitive semiconductor and monitoring method |
| WO2021135855A1 (en) * | 2019-12-30 | 2021-07-08 | 江西飞尚科技有限公司 | Distributed air quality monitoring device and monitoring method thereof |
| CN113358702A (en) * | 2021-06-08 | 2021-09-07 | 无锡时和安全设备有限公司 | Pollution source monitoring system based on sensor array modularization |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114791303A (en) * | 2022-03-29 | 2022-07-26 | 杭州涂鸦信息技术有限公司 | Humiture acquisition device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103251414A (en) * | 2007-06-21 | 2013-08-21 | 雅培糖尿病护理公司 | Device for detecting analyte level |
| CN205879297U (en) * | 2016-06-12 | 2017-01-11 | 江西飞尚科技有限公司 | Water level monitor for underground drainage pipe network based on principles of laser |
| CN107561215A (en) * | 2017-06-05 | 2018-01-09 | 苏州天信德环保科技有限公司 | A kind of gridding miniature air quality-monitoring substation |
| CN108399727A (en) * | 2018-05-17 | 2018-08-14 | 天津工业大学 | A kind of hazardous gas on-line monitoring system and method based on LORA networks |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9766220B2 (en) * | 2016-02-08 | 2017-09-19 | International Business Machines Corporation | Leveraging air/water current variability for sensor network verification and source localization |
| CN108693309A (en) * | 2018-04-12 | 2018-10-23 | 盐城工学院 | A kind of pollutant monitoring system, method and storage medium |
| CN209372808U (en) * | 2018-12-12 | 2019-09-10 | 一路狂奔科技(深圳)有限公司 | A kind of air monitering instrument suitable for unmanned plane |
| CN109917741A (en) * | 2019-03-22 | 2019-06-21 | 福建省数字福建云计算运营有限公司 | Data center computer room ambient air quality real-tune TT & C devices and methods therefor |
| CN111122667A (en) * | 2019-12-30 | 2020-05-08 | 江西飞尚科技有限公司 | Distributed air quality monitoring device and monitoring method thereof |
| CN111122668A (en) * | 2019-12-30 | 2020-05-08 | 江西飞尚科技有限公司 | Automatic-calibration air quality monitoring device and monitoring method thereof |
-
2019
- 2019-12-30 CN CN201911390122.5A patent/CN111122667A/en active Pending
-
2020
- 2020-12-08 WO PCT/CN2020/134492 patent/WO2021135855A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103251414A (en) * | 2007-06-21 | 2013-08-21 | 雅培糖尿病护理公司 | Device for detecting analyte level |
| CN205879297U (en) * | 2016-06-12 | 2017-01-11 | 江西飞尚科技有限公司 | Water level monitor for underground drainage pipe network based on principles of laser |
| CN107561215A (en) * | 2017-06-05 | 2018-01-09 | 苏州天信德环保科技有限公司 | A kind of gridding miniature air quality-monitoring substation |
| CN108399727A (en) * | 2018-05-17 | 2018-08-14 | 天津工业大学 | A kind of hazardous gas on-line monitoring system and method based on LORA networks |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021135855A1 (en) * | 2019-12-30 | 2021-07-08 | 江西飞尚科技有限公司 | Distributed air quality monitoring device and monitoring method thereof |
| CN111564031A (en) * | 2020-05-26 | 2020-08-21 | 河南赛贝电子科技有限公司 | Gridding atmospheric pollution emergency mobile monitoring system |
| CN111650251A (en) * | 2020-07-07 | 2020-09-11 | 林伟立 | Ozone sonde based on gas-sensitive semiconductor and monitoring method |
| CN113358702A (en) * | 2021-06-08 | 2021-09-07 | 无锡时和安全设备有限公司 | Pollution source monitoring system based on sensor array modularization |
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|---|---|
| WO2021135855A1 (en) | 2021-07-08 |
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