CN107561215A - A kind of gridding miniature air quality-monitoring substation - Google Patents
A kind of gridding miniature air quality-monitoring substation Download PDFInfo
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- CN107561215A CN107561215A CN201710413305.9A CN201710413305A CN107561215A CN 107561215 A CN107561215 A CN 107561215A CN 201710413305 A CN201710413305 A CN 201710413305A CN 107561215 A CN107561215 A CN 107561215A
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- miniature air
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 44
- 238000012545 processing Methods 0.000 claims abstract description 31
- 238000013500 data storage Methods 0.000 claims abstract description 14
- 239000013618 particulate matter Substances 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000005518 electrochemistry Effects 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 7
- 238000004458 analytical method Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 description 17
- 230000006870 function Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000007726 management method Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention discloses a kind of gridding miniature air quality-monitoring substation, including：Central processing unit, sensor cluster, mobile network's transport module, power supply module, battery voltage sensing module, data storage, server, wherein central processing unit is connected with sensor cluster, mobile network's transport module, power supply module, battery voltage sensing module and data storage respectively, mobile network's transport module is connected with server, and mobile network's transport module includes GSM units and GNSS units.Its dynamic analysis that can change for some areas air capacity of the present invention provide data, so as to provide Feasibility Solution in terms of Causes for Pollution, pollution sources explanation, in terms of heavily contaminated reply for country and environmental protection authorities.
Description
Technical field
The present invention relates to environmental technology field, particularly relates to a kind of gridding miniature air quality-monitoring substation.
Background technology
Issued according to Environmental Protection Department in 2016《" 13 " environmental monitoring quality management scheme》With《On adding
Strong surrounding air monitors the programme of work of quality management automatically》And related data is understood, at present, our national 338 regions
And above city is completed 1436 national urban environment air auto-monitoring stations, these automatic monitor stations are in real time to National Environmental
Master station's transmission of monitoring data are monitored, all Monitoring Datas are issued to province, the environment prison of city's one-level after being audited by relevant departments
Survey department, and form air quality related data and forecast.
What the air quality monitoring data that air quality monitoring station provides reflected is the synthesis shape of local air quality
Condition.The defects of this air quality monitoring station has its own.Wherein, the defects of maximum is：Due to construction and operation maintenance
Cost height (National urban level only has 1436), therefore be not suitable for large area construction；Further, since between monitoring point and monitoring point
Distance is remote, can not analyze the dynamic change situation of some areas air quality, so as to which the origin cause of formation led to not for pollution is carried out
Specific analysis, so, when polluting, relative emergency measure can not be formulated according to pollution condition.Such as 2016 extremely
At the beginning of 2017, occur repeatedly to continue severe haze weather in Beijing-tianjin-hebei Region, in view of environmental protection pressure, some places take " dirty
Dye enterprise all closes down " mode of this single solution for diverse problems, or even the worker of many violation enterprises has been arrested, this socially causes not
Few repercussion.
It is known that monitoring includes waste water and waste gas monitoring to pollution sources automatically, wherein influenceing the mainly useless of air quality
Gas discharges.So, if can be solved the above problems using only pollution sources automatic monitoring dataBecause air pollution is one
It is the problem of individual complicated, not only relevant with the waste gas discharge of local, there is relation with landform, surrounding area environment, meteorology etc., because
By pollution sources, monitoring still can not formulate counter-measure automatically merely for this.
Therefore, the present inventor needs a kind of new technology of design badly to improve its problem.
The content of the invention
The present invention is intended to provide a kind of gridding miniature air quality-monitoring substation, it can be some areas air quantitative change
The dynamic analysis of change provide data, so as to be country and environment in terms of Causes for Pollution, pollution sources explanation, in terms of heavily contaminated reply
Authorities are protected to provide Feasibility Solution.
In order to solve the above technical problems, the technical scheme is that：
A kind of gridding miniature air quality-monitoring substation, including：Central processing unit, sensor cluster, mobile network pass
Defeated module, power supply module, battery voltage sensing module, data storage, server, wherein the central processing unit respectively with institute
State sensor cluster, mobile network's transport module, the power supply module, the battery voltage sensing module and the data
Memory is connected, and mobile network's transport module is connected with the server, and mobile network's transport module includes
GSM units and GNSS units.
Preferably, the sensor cluster includes electrochemical sensor, particulate matter sensors and/or Temperature Humidity Sensor,
Electrochemical sensor described in each of which is electrically connected by an electrochemical sensor circuit with the central processing unit, described
Grain thing sensor and the Temperature Humidity Sensor are electrically connected by digital interface with the central processing unit.
Preferably, the operational amplifier, low pass filter, modulus that the electrochemical sensor circuit includes being sequentially connected turn
Parallel operation, wherein the input of the operational amplifier is connected with the electrochemical sensor, the output end of the analog-digital converter
It is connected with the central processing unit.
Preferably, the particulate matter sensors are provided with air inlet and air outlet, are provided with mini-fan in it.
Preferably, the electrochemical sensor includes but is not limited to SO2Electrochemical sensor, NO2Electrochemical sensor, CO
Electrochemical sensor, O3Electrochemical sensor.
Preferably, mobile network's transport module realizes the company with the central processing unit by a digital interface
Connect.
Preferably, the analog-digital converter realizes the connection with the central processing unit by digital interface.
Preferably, the central processing unit is microcontroller.
Preferably, the data storage is FLASH data storages.
Using above-mentioned technical proposal, the present invention comprises at least following beneficial effect：
Gridding miniature air quality-monitoring substation of the present invention, under conditions of measurement accuracy is ensured, on the one hand,
Air quality monitoring is miniaturized, is greatly lowered and builds input and later stage operation maintenance cost early stage；On the other hand, realize empty
The gridding of makings amount monitors, and the dynamic analysis for the change of some areas air capacity provide data, so as in Causes for Pollution, pollution sources
In terms of explanation, in terms of heavily contaminated reply Feasibility Solution is provided for country and environmental protection authorities.
Brief description of the drawings
Fig. 1 is the structural representation of gridding miniature air quality-monitoring substation of the present invention；
Fig. 2 is the circuit theory diagrams of gridding miniature air quality-monitoring substation of the present invention.
Wherein：1.SO2Electrochemical sensor, 2.NO2Electrochemical sensor, 3.CO electrochemical sensors, 4.O3Electrochemistry passes
Sensor, 5. operational amplifiers, 6. low pass filters, 7. analog-digital converters, 8. central processing units, 9. mobile network's transport modules,
10. particulate matter sensors, 11. mini-fans.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
As shown in Figure 1 to Figure 2, for meet the present invention a kind of gridding miniature air quality-monitoring substation, including：Center
Processor 8, sensor cluster, mobile network's transport module 9, power supply module, battery voltage sensing module, data storage, clothes
Be engaged in device, wherein the central processing unit 8 respectively with the sensor cluster, mobile network's transport module 9, the power supply mould
Block, the battery voltage sensing module connect with the data storage, mobile network's transport module 9 and the server
Connection, and mobile network's transport module 9 includes GSM units and GNSS units (the GPS+ Big Dippeves).
Preferably, the sensor cluster includes electrochemical sensor, particulate matter sensors 10 and/or temperature and humidity sensing
Device, electrochemical sensor described in each of which are electrically connected by an electrochemical sensor circuit with the central processing unit 8, institute
Particulate matter sensors 10 and the Temperature Humidity Sensor is stated to electrically connect with the central processing unit 8 by digital interface.
Preferably, the electrochemical sensor circuit includes operational amplifier 5, low pass filter 6, the modulus being sequentially connected
Converter 7, wherein the input of the operational amplifier 5 is connected with the electrochemical sensor, the analog-digital converter 7 it is defeated
Go out end to be connected with the central processing unit 8.
Preferably, the particulate matter sensors 10 are provided with air inlet and air outlet, are provided with mini-fan 11 in it.
Preferably, the electrochemical sensor includes but is not limited to SO2Electrochemical sensor 1, NO2Electrochemical sensor 2,
CO electrochemical sensors 3, O3Electrochemical sensor 4.
Preferably, mobile network's transport module 9 realizes the company with the central processing unit 8 by a digital interface
Connect.
Preferably, the analog-digital converter 7 realizes the connection with the central processing unit 8 by digital interface.
Preferably, the central processing unit 8 is microcontroller.
Preferably, the data storage is FLASH data storages.
Preferably, the battery voltage sensing module is BMS battery management systems, its respectively with the power supply module and institute
Central processing unit 8 is stated to connect.Because the BMS battery management systems are conventional modules of the prior art, people in the art
Member is not it is to be understood that event the present embodiment is repeated this.
The operation principle of the present embodiment is：The major parameter of gridding miniature air monitoring sub-station measurement has SO2、NO2、
CO、O3, PM10, PM2.5, temperature, humidity, PM10 particulate matters number, PM5.0 particulate matters number, PM2.5 particulate matters number,
PM1.0 particulate matters number, PM0.5 particulate matters number, longitude and latitude geographical location information, translational speed and direction etc..It is wherein central
Processor 8 is mainly used in realizing the collection of all data, storage, transmission, low power consumption control etc..Power supply module (is preferably the sun
Energy electric power system) gridding miniature air monitoring sub-station offer power supply is provided, so as to avoid accessing the trouble of civil power.GSM units are real
The GPRS upload functions of existing measurement data.GNSS units obtain position and movement in real time by GPS and Big Dipper alignment by union function
Information.Battery voltage monitoring module realizes the real-time monitoring of cell voltage.Data storage is used for the storage for realizing data.Electrification
Sensor circuit is learned to be used to realize amplification and gather the signal of various electrochemical sensors.Particulate matter sensors 10 are used to realize master
Want particulate matter PM10, PM2.5 calculating and the statistics of various particles things numbers.Temperature Humidity Sensor is used to realize to temperature
With the data acquisition of humidity.Various sensors described in the present embodiment are on sale in the prior art, therefore the present embodiment is to this
Do not repeat, those skilled in the art should know.
Embodiment is as follows：
1st, allomeric function embodiment
As shown in figure 1, SO2、NO2、CO、O3All it is electrochemical sensor, particulate matter sensors 10 are digital interfaces, center
Processor 8 carries out correlation computations by gathering the signal of these sensors, the concentration signal of needs is produced, then by concentration
Signal is stored in FLASH data storages, while is connected to remote server by GSM units, and concentration signal is transferred into clothes
Be engaged in device on, transmission while, by GNSS units obtain positional information, according to positional information calculation out position twice whether
Offset, when judging that offset distance exceedes alarm distance, that is, produce stolen alarm signal.
2nd, sensor embodiment
The electrochemical sensor signal of gridding miniature air monitoring sub-station collection is faint nA level current signals, therefore
Need using low input offset current, low input offset voltage, the low high precision operating amplifier 5 for exporting temperature drift.Such ability
The small-signal for ensureing to gather is unaffected and disturbs.In order that stable output signal, eliminates various High-frequency Interferences, in high accuracy
The output end of operational amplifier 5 is needed by one-stage low-pass twt amplifier.Although faint electrochemical sensor signal by
Amplification, but still it is very faint, it is therefore desirable to high-precision analog/digital converter is used, so as to realize the resolution of the signal of collection
Rate precision is sufficiently high.Due to sharing No. 4 electrochemical sensors, therefore the analog/digital converter selected should be that belt switch is cut
The multi-channel analog/digital converter changed.
Specifically, it is defeated as shown in Fig. 2 the nA levels electric current of electrochemical sensor is after the amplification of high precision operating amplifier 5
Go out for mv magnitude voltage signals；The voltage signal of output passes through low pass filter 6, filters out High-frequency Interference；Stable signal input
To 16 high-precision analog/digital quantizers (resolution ratio 1/65536), the signal of measurement is set to be accurate to 0.01mv, completely
It disclosure satisfy that the requirement of measurement.16 high-precision analog/digital quantizers are led to by digital interface and central processing unit 8
Letter, complete the switching of unlike signal passage and the collection of signal.
There are air inlet and air outlet in particulate matter sensors 10, carry mini-fan 11, fan inhales air from air inlet
Enter in particulate matter sensors 10, exclude air from air outlet, light scattering principle is utilized in whole gas circuit, measure in air
The particulate matter number of grain thing concentration and various different-grain diameters.Measurement result sends central processing unit 8 to by digital interface.
In the present embodiment, the measurement of the electrochemical sensor of gridding miniature air quality-monitoring substation belongs to passive survey
When amount, only outside air are diffused into inside electrochemical sensor, effective measurement result can be just obtained, this causes the reality of measurement
When property is poor.In order to obtain measurement result in real time, it is necessary to increase gas circuit, outside air is set to enter electrochemical sensing in real time
Inside device.Consider power consumption and the limiting factor of flow, low-voltage Ultra-Low Speed DC micro fan need to be used.Differentiated to improve
Rate, the special electrochemical sensor of air quality monitoring of lower range need to be used.
, will be extraneous fresh with 400mL/min ultralow speed therefore the present embodiment preferably selects 3.3V miniature low speed fan
Air sucks sensor, meets the real-time measurement request of sensor, while increase between mini-fan and sensor and dehumidified
Device is filtered, the humidity of air is met the requirement of measurement, fresh air is after electrochemical sensor, from electrochemical sensor
Both sides are returned in air.
The SO at gridding miniature air station2Electrochemical sensor is adopted using 0-1000ppb range, CO electrochemical sensors
With 0-20ppm range, NO2Electrochemical sensor uses 0-250ppb range, O3Electrochemical sensor is using 0-250ppb's
Range.Such measurement range, the resolution ratio of measurement will be greatly improved.
Certainly, the present embodiment is not defined to the specific range of above-mentioned electrochemical sensor, those skilled in the art
It can be adjusted correspondingly completely according to the use demand of reality, i.e., can also be further in order to realize more accurate measurement
Improve the range of various electrochemical sensors.Therefore any obvious change and adjustment the present embodiment protection domain it
It is interior.
3rd, anti-theft feature embodiment
Because gridding miniature air monitoring sub-station realizes miniaturization, in order to prevent being removed, it is desirable to provide antitheft work(
Energy.When antitheft, if GSM antenna or GNSS antenna are removed, alarm can not be realized, this is also to need what is solved to ask
Topic.GNSS function collection GPS and the Big Dipper are positioned at one, and constant speed is fast, and precision is higher, are good solutions.
The micro energy lose mobile network transport module 9 that GSM units and GNSS Elementary Functions are integrated in one in the present embodiment,
The connection with central processing unit 8 can be realized by a digital interface.Central processing unit 8 realizes control by digital interface
The timing start-up function of GSM units and GNSS units, after start, this positional information is obtained by GNSS units, then
Compared with the positional information obtained with last time, by the geometrical relationship of longitude and latitude and earth radius, position twice is calculated
Deviation, if position deviation twice exceedes normal value, triggering alarm, after alarm, GSM units and GNSS units will be every 1
Second to server send a positional information, while to related director send alarming short message breath.
4th, Low-power Technology solution
Gridding miniature air monitoring sub-station should realize miniaturization, measure many sensor parameters again；Need simultaneously
Consider the battery powered situation of continuous rainy days.Therefore, requirement of the gridding miniature air monitoring sub-station to power consumption is very high.
In whole circuit, GSM units, GNSS units, particulate matter measurement are power consumption the best parts, therefore, it is necessary to examine during circuit design
Consider to their power supply.
In the present embodiment, because GSM units and GNSS units employ all in one intergration models, it enormously simplify and set
Meter, while farthest reduce power consumption；In addition, as shown in Fig. 2 either the power supply of GSM units or GNSS units is all
Working time in intermittent operation mode, can largely be reduced, so as to reduce power consumption with independent control.Other particulate matter
At work, fan is maximum power consuming units to sensor 10, in intermittent operation mode, when not working, and central processing
Device 8 can control particulate matter sensors 10 to enter park mode by digital interface, fan is stopped, so also can be maximum
Reduce to degree the power consumption of particulate matter sensors 10.
In addition, whole system designs, it is preferred to use low-voltage lithium battery power supply, hardware low-dropout regulator LDO voltage stabilizings,
Also the energy loss during level conversion can farthest be reduced.
The present invention is under conditions of measurement accuracy is ensured, on the one hand, air quality monitoring is miniaturized, before being greatly lowered
Phase builds input and later stage operation maintenance cost；On the other hand, realize that air quality gridding monitors, be some areas air capacity
The dynamic analysis of change provide data, so as to be country and ring in terms of Causes for Pollution, pollution sources explanation, in terms of heavily contaminated reply
Border protection authorities provide Feasibility Solution.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (9)
- A kind of 1. gridding miniature air quality-monitoring substation, it is characterised in that including：Central processing unit, sensor cluster, shifting Dynamic network transmission module, power supply module, battery voltage sensing module, data storage, server, wherein the central processing unit Respectively with the sensor cluster, mobile network's transport module, the power supply module, the battery voltage sensing module and The data storage connection, mobile network's transport module is connected with the server, and the mobile network is transmitted Module includes GSM units and GNSS units.
- 2. gridding miniature air quality-monitoring substation as claimed in claim 1, it is characterised in that：The sensor cluster bag Electrochemical sensor, particulate matter sensors and/or Temperature Humidity Sensor are included, electrochemical sensor described in each of which passes through one Electrochemical sensor circuit electrically connects with the central processing unit, and the particulate matter sensors and the Temperature Humidity Sensor pass through Digital interface electrically connects with the central processing unit.
- 3. gridding miniature air quality-monitoring substation as claimed in claim 2, it is characterised in that：The electrochemical sensor Circuit includes operational amplifier, low pass filter, the analog-digital converter being sequentially connected, wherein the input of the operational amplifier It is connected with the electrochemical sensor, the output end of the analog-digital converter is connected with the central processing unit.
- 4. gridding miniature air quality-monitoring substation as claimed in claim 2, it is characterised in that：The particulate matter sensors Air inlet and air outlet are provided with, is provided with mini-fan in it.
- 5. the gridding miniature air quality-monitoring substation as described in claim 2-4 is any, it is characterised in that：The electrochemistry Sensor includes but is not limited to SO2Electrochemical sensor, NO2Electrochemical sensor, CO electrochemical sensors, O3Electrochemical sensing Device.
- 6. the gridding miniature air quality-monitoring substation as described in claim 1-5 is any, it is characterised in that：The mobile network Network transport module realizes the connection with the central processing unit by a digital interface.
- 7. gridding miniature air quality-monitoring substation as claimed in claim 3, it is characterised in that：The analog-digital converter leads to Cross digital interface realization and the connection of the central processing unit.
- 8. the gridding miniature air quality-monitoring substation as described in claim 1-7 is any, it is characterised in that：The centre Reason device is microcontroller.
- 9. the gridding miniature air quality-monitoring substation as described in claim 1-8 is any, it is characterised in that：The data are deposited Reservoir is FLASH data storages.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710413305.9A CN107561215A (en) | 2017-06-05 | 2017-06-05 | A kind of gridding miniature air quality-monitoring substation |
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| CN201710413305.9A CN107561215A (en) | 2017-06-05 | 2017-06-05 | A kind of gridding miniature air quality-monitoring substation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN204758578U (en) * | 2015-07-10 | 2015-11-11 | 三峡大学 | City public place air quality secure network on -line monitoring system |
| CN106297254A (en) * | 2016-10-18 | 2017-01-04 | 重庆地质矿产研究院 | GNSS multidimensional displacement monitoring system and remote data processing method thereof |
| CN206862991U (en) * | 2017-06-05 | 2018-01-09 | 苏州天一信德环保科技有限公司 | A kind of gridding miniature air quality-monitoring substation |
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2017
- 2017-06-05 CN CN201710413305.9A patent/CN107561215A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201716285U (en) * | 2010-04-23 | 2011-01-19 | 王海宝 | Environment air quality monitoring system |
| CN103592348A (en) * | 2013-11-19 | 2014-02-19 | 西北师范大学 | Portable quick indoor air quality detector |
| CN204758578U (en) * | 2015-07-10 | 2015-11-11 | 三峡大学 | City public place air quality secure network on -line monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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