CN110320331A - A kind of Atmosphere Environment Monitoring System Bases - Google Patents
A kind of Atmosphere Environment Monitoring System Bases Download PDFInfo
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- CN110320331A CN110320331A CN201910712894.XA CN201910712894A CN110320331A CN 110320331 A CN110320331 A CN 110320331A CN 201910712894 A CN201910712894 A CN 201910712894A CN 110320331 A CN110320331 A CN 110320331A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 58
- 238000012360 testing method Methods 0.000 claims abstract description 44
- 238000004891 communication Methods 0.000 claims abstract description 16
- 238000007689 inspection Methods 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 145
- 238000010438 heat treatment Methods 0.000 claims description 24
- 238000012545 processing Methods 0.000 claims description 15
- 230000003321 amplification Effects 0.000 claims description 9
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000007726 management method Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013523 data management Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
- G01N33/0016—Sample conditioning by regulating a physical variable, e.g. pressure, temperature
Abstract
The present invention provides a kind of Atmosphere Environment Monitoring System Bases, including multiple atmosphere environment supervision devices, server and management platform, the atmosphere environment supervision device includes cabinet and setting in the intracorporal sample gas pretreatment unit of the case, master controller, detection gas chamber and wireless communication module, sensor module is provided in the detection gas chamber, the sample gas pretreatment unit is connect with the master controller, is treated test sample gas according to the detection instruction of the master controller and is carried out constant temperature, constant pressure and constant current pretreatment；The sensor module is used to carry out minimum gas Concentration Testing to test sample gas to pretreated, and trace gas detection result is returned to the master controller；Trace gas detection result is uploaded to the server by the wireless communication module by the master controller；The management platform is connect with the server, trace gas detection result described in real time inspection.
Description
Technical field
The present invention relates to atmosphere environment supervision fields, specifically, relate to a kind of Atmosphere Environment Monitoring System Bases.
Background technique
It is increasingly strong with environmental consciousness, it is higher and higher to the air quality requirements of place environment, in whole people's environmental protection
Under overall background, although the minimum gas concentration in atmosphere is very low, with continuing for air pollution in recent years, cause in atmosphere
The content of minimum gas severely exceeds, and increasingly aggravates to the health threat of people, realizes distributed real-time monitoring atmosphere thus
Environment is most important.Since the minimum gas content in atmosphere is very low, containing for minimum gas is detected in complicated atmospheric environment
Amount is very difficult, and temperature, humidity, pressure, calibration of sample gas flow velocity and sensor etc. can all influence its detection effect, energy
Minimum gas in enough accurate detection atmosphere will carry out anti-interference process to sample gas in advance, for complicated detection ring
Design reasonable pretreatment detection gas circuit in border, realizes that the accurate calibration of sensor is the effective means for eliminating detection interference at gas chamber.
In order to solve the above problems, people are seeking always a kind of ideal technical solution.
Summary of the invention
The purpose of the present invention is in view of the deficiencies of the prior art, to provide a kind of Atmosphere Environment Monitoring System Bases.
To achieve the goals above, the technical scheme adopted by the invention is that: a kind of Atmosphere Environment Monitoring System Bases, including more
A atmosphere environment supervision device, server and management platform, the atmosphere environment supervision device include cabinet and are arranged in institute
The intracorporal sample gas pretreatment unit of case, master controller, detection gas chamber and wireless communication module are stated, is provided in the detection gas chamber
Sensor module,
The sample gas pretreatment unit is connect with the master controller, treats test sample gas according to the detection instruction of the master controller
Carry out constant temperature, constant pressure and constant current pretreatment；
The sensor module is used to carry out minimum gas Concentration Testing to test sample gas to pretreated, and by trace gas physical examination
It surveys result and returns to the master controller；
Trace gas detection result is uploaded to the server by the wireless communication module by the master controller；
The management platform is connect with the server, trace gas detection result described in real time inspection.
Based on above-mentioned, the sample gas pretreatment unit includes shell, the heating end cap that described shell one end is arranged in, setting
In the air inlet of the shell other end and setting in the intracorporal gas conduit of the shell, the fire end, which covers, to be provided with out
Port, the air inlet, the gas conduit and the gas outlet are sequentially connected to form the gas circuit to test sample gas；
The air inlet is provided with Temperature Humidity Sensor, and the gas conduit inner wall is provided with heating device, the master controller
It is connect respectively with the Temperature Humidity Sensor and the heating device, institute is controlled according to the testing result of the Temperature Humidity Sensor
State heating device work；
The gas outlet is provided with pressure sensor, flow sensor and flow controller, the master controller respectively with it is described
Pressure sensor, the flow sensor are connected with the flow controller, are passed according to the pressure sensor and the flow
The testing result of sensor controls the flow controller work.
Based on above-mentioned, the sensor module includes gas sensor, signal amplification and processing circuit and is built-in with A/D
The single-chip microcontroller of converting unit,
The single-chip microcontroller receives detection instruction, controls the sensor detection to test sample gas according to detection instruction；
The sensor generates electric signal and is sent to the signal amplification and processing circuit；
The signal amplification and processing circuit amplify processing to the electric signal, and will be described in amplified electric signal feeding
A/D converting unit carries out A/D conversion；
The single-chip microcontroller is calculated according to the digital signal obtained after preset standard concentration signal and conversion to trace gas in test sample gas
The type and concentration of body.
Based on above-mentioned, the obtaining step of the preset standard concentration signal are as follows:
Step 1, the single-chip microcontroller receives calibration instruction, and the Zero calibration of sensor is carried out according to the calibration instruction；
Step 2, judge whether Zero calibration succeeds, if success, carries out normal concentration calibration；If failed, add up zero point
The number of calibration simultaneously re-starts Zero calibration, and determines that sensor has event when continuously Zero calibration is failed three times
Barrier；
Step 3, whether judgment criteria concentration calibration succeeds, if success, to the single-chip microcontroller return calibration successful information and
Normal concentration signal；If failed, the number of accumulated standard concentration calibration, and continuously normal concentration calibration is failed three times
When determines sensor, and there are failures.
Based on above-mentioned, the Zero calibration specifically:
It is passed through in the detection gas chamber using the oxygen calibrating gas without target minimum gas as zero gas, when ventilation is default
After length, in next preset duration, the numerical value of the primary sensor is recorded every prefixed time interval；
Average record value, Mei Gechuan are sought to all record values in each sensor preset duration in the sensor respectively
The average record value of sensor is its zero point value.
Based on above-mentioned, the normal concentration calibration specifically:
Selection standard target minimum gas is passed through in the detection gas chamber, after preset duration of ventilating, in next preset duration,
The numerical value of the primary sensor is recorded every prefixed time interval；
Average record value, Mei Gechuan are sought to all record values in each sensor preset duration in the sensor respectively
The average record value of sensor is its preset standard concentration signal.
Based on above-mentioned, the atmosphere environment supervision device further includes spin manifold temperature control unit, the spin manifold temperature control
Unit includes that the intracorporal temperature sensor of the case is arranged in, the heating sheet of the bottom of box is arranged in and is arranged in cabinet institute
The cooling fan at top is stated, the master controller is separately connected the temperature sensor, the heating sheet and the cooling fan.
Based on above-mentioned, the atmosphere environment supervision device further includes GPS positioning module, and the GPS positioning module is for real
When obtain the location information of the distributed atmosphere environment supervision device and the clothes be uploaded to by the wireless communication module
Business device.
Based on above-mentioned, the atmosphere environment supervision device further includes solar powered power supply.
Based on above-mentioned, the master controller uses MSP430F67471A single-chip microcontroller.
The present invention has substantive distinguishing features outstanding and significant progress compared with the prior art, specifically, passes through sample gas
Pretreatment unit, so that sample gas filters out disturbing factor before entering sealed gas chamber, so that sensor is to trace gas detection
It is more acurrate；Cooperate closed gas chamber by particular algorithm and mode, using zero gas and standard target minimum gas to sensor
Mould group is accurately demarcated, so that detection data processing is more acurrate；By wireless communication, data are completed wirelessly to upload, is passed through
Server end builds data management platform, realizes monitoring of the user to multiple detection zones are detected.
Detailed description of the invention
Fig. 1 is the functional block diagram of Atmosphere Environment Monitoring System Bases of the present invention.
Fig. 2 is the structural schematic diagram of sample gas pretreatment unit of the present invention.
Fig. 3 is the functional block diagram of inventive sensor mould group.
Fig. 4 is the work flow diagram of inventive sensor mould group.
Fig. 5 is the acquisition flow chart of preset standard concentration signal in the present invention.
In figure, 1. shells；2. air inlet；3. heating end cap；4. gas outlet；5. connection jaws；6. gas conduit.
Specific embodiment
Below by specific embodiment, technical scheme of the present invention will be described in further detail.
As shown in Figure 1, a kind of Atmosphere Environment Monitoring System Bases, including multiple atmosphere environment supervision devices, server and management
Platform, the atmosphere environment supervision device include cabinet and are arranged in the intracorporal sample gas pretreatment unit of the case, main control
Device detects gas chamber and wireless communication module, is provided with sensor module in the detection gas chamber,
The sample gas pretreatment unit is connect with the master controller, treats test sample gas according to the detection instruction of the master controller
Constant temperature, constant pressure and constant current pretreatment are carried out, and enters the detection gas chamber to test sample pneumatic transmission for pretreated；
The sensor module is used to carry out minimum gas Concentration Testing to test sample gas to pretreated, and by trace gas physical examination
It surveys result and returns to the master controller；
Trace gas detection result is uploaded to the server by the wireless communication module by the master controller；It is preferred that
, the master controller uses MSP430F67471A single-chip microcontroller.
The management platform is connect with the server, trace gas detection result described in real time inspection.
Specifically, the atmosphere environment supervision device further includes GPS positioning module, the GPS positioning module is for real-time
It obtains the location information of the distributed atmosphere environment supervision device and the service is uploaded to by the wireless communication module
Device.Preferably, the mode that the wireless communication module uses communication mode compatible, such as GPRS, Rola, NB-Iot compatibility are logical
Letter mode.
The management platform and the server read multiple atmospheric environments by the wireless communication module in real time
Location information and the trace gas detection of monitoring device as a result, to realize the grid-based management to detection zone, by collecting,
It arranges, summarize various data, analyzed for the Atmosphere Environment Monitoring System Bases operating condition, work out real time data statistical report form
Etc. management works the reliable firsthand data is provided.
Specifically, specifically, as shown in Fig. 2, the sample gas pretreatment unit includes shell 1, is arranged in the shell 1 one
The heating end cap 3 at end, the gas conduit 6 that the air inlet 2 of 1 other end of shell is set and is arranged in the shell 1,
Be provided with gas outlet 4 on the heating end cap 3, the air inlet 2, the gas conduit 6 and the gas outlet 4 be sequentially connected with
Form the gas circuit to test sample gas；
The air inlet 2 is provided with Temperature Humidity Sensor, and 6 inner wall of gas conduit is provided with heating device, the main control
Device is connect with the Temperature Humidity Sensor and the heating device respectively, is controlled according to the testing result of the Temperature Humidity Sensor
The heating device work, to realize the constant temperature pretreatment for treating test sample gas；
The gas outlet 4 is provided with pressure sensor, flow sensor and flow controller, the master controller respectively with it is described
Pressure sensor, the flow sensor are connected with the flow controller, are passed according to the pressure sensor and the flow
The testing result of sensor controls the flow controller work, to realize the constant pressure and constant current processing for the treatment of test sample gas.
Preferably, the sample gas pretreatment unit equipment uses conduit type gas circuit made of anticorrosion, not adsorbent material, to
Test sample gas when passing through the gas circuit can quickly through and realize and treat the heating of test sample gas, will not because to test sample gas in the gas circuit
Interior stop and cause gas absorption, so as to cause the change of minimum gas concentration, ensure that low concentration trace gas detection can
By property；The inner wall of the gas conduit is arranged in the heating device simultaneously, will not hinder the flowing to test sample gas, described
The end of the gas circuit is arranged in pressure sensor, flow sensor and flow controller, after accurate detection heating to test sample
The temperature and humidity of gas, pressure, flow, and the gas after heat treatment is directly entered the detection gas chamber, ensure that test sample gas
Every Testing index of middle minimum gas improves accuracy, the accuracy and reliability of detection.
Preferably, detection gas chamber is provided with described in one using anticorrosion, adsorbent material is not made in each detection gas chamber
Sensor module is sealed in the sensor module in the detection gas chamber by fastener, and user can according to need inspection
The minimum gas of survey adds corresponding sensor module；Each detection gas chamber is joined end to end by gas-guide tube, can to test sample gas
Each sensor is uniformly flowed through, the express passway to test sample gas is formed, avoids to test sample gas remaining influence measurement accuracy.
Specifically, as shown in Figure 3 and Figure 4, the sensor module includes gas sensor, signal amplification and processing circuit
And it is built-in with the single-chip microcontroller of A/D converting unit,
The single-chip microcontroller receives detection instruction, controls the sensor detection to test sample gas according to detection instruction；
The sensor generates electric signal and is sent to the signal amplification and processing circuit；
The signal amplification and processing circuit amplify processing to the electric signal, and will be described in amplified electric signal feeding
A/D converting unit carries out A/D conversion；
The single-chip microcontroller is calculated according to the digital signal obtained after preset standard concentration signal and conversion to trace gas in test sample gas
The type and concentration of body.
Specifically, as shown in figure 5, the obtaining step of the preset standard concentration signal are as follows:
Step 1, the single-chip microcontroller receives calibration instruction, and the Zero calibration of sensor is carried out according to the calibration instruction；
Step 2, judge whether Zero calibration succeeds, if success, carries out normal concentration calibration；If failed, add up zero point
The number of calibration simultaneously re-starts Zero calibration, and determines that sensor has event when continuously Zero calibration is failed three times
Barrier；
Step 3, whether judgment criteria concentration calibration succeeds, if success, to the single-chip microcontroller return calibration successful information and
Normal concentration signal；If failed, the number of accumulated standard concentration calibration, and continuously normal concentration calibration is failed three times
When determines sensor, and there are failures.
Specifically, the Zero calibration specifically:
It is passed through in the detection gas chamber using the oxygen calibrating gas without target minimum gas as zero gas, when ventilation is default
After length, in next preset duration, the numerical value of the primary sensor is recorded every prefixed time interval；
Average record value, Mei Gechuan are sought to all record values in each sensor preset duration in the sensor respectively
The average record value of sensor is its zero point value；
The Zero calibration method can achieve ventilation once, the effect that the zero point of all the sensors is demarcated together, it is preferred that described
Preset duration is 5 minutes, and the prefixed time interval is 1 second.
Specifically, the normal concentration calibration specifically:
Selection standard target minimum gas is passed through in the detection gas chamber, after preset duration of ventilating, in next preset duration,
The numerical value of the primary sensor is recorded every prefixed time interval；
Average record value, Mei Gechuan are sought to all record values in each sensor preset duration in the sensor respectively
The average record value of sensor is its preset standard concentration signal.
The normal concentration scaling method can achieve ventilation once, the effect that the calibration point of all the sensors is demarcated together,
Preferably, the preset duration is 5 minutes, and the prefixed time interval is 1 second.
Preferably, the preset duration is 5 minutes, and the prefixed time interval is 1 second,
In the acquisition process of above-mentioned preset standard concentration signal, what it is due to Atmosphere Environment Monitoring System Bases selection is electrochemical sensing
Device, and electrochemical sensor needs the regular hour to the reaction of target minimum gas, and final inside can reach dynamic equilibrium
I.e. output valve fluctuates back and forth up and down, along with the influence of external environment and peripheral circuits, exacerbates the fluctuation up and down of output valve
Fluctuation.The numerical value intercepted in preset duration is averaging, and is equivalent to and is quadratured to the output valve at each moment, and processing in this way reduces
Error, so that test result is more acurrate.
The sensor module is that the electric signal by generating under test gas concentration is dense with preset standard when due to measurement
Degree signal, which is compared, is calculated accurate gas concentration value, therefore, carries out school zero to the sensor module at any time, often
Property to be calibrated to the sensor module be all to guarantee that the sensor module measures accurately essential work.
It should be understood that since the atmosphere environment supervision device can according to need addition and the replacement sensor
Mould group, therefore suggest recalibrating the sensor module after addition and replacement；Each quasi-instrument before the use,
Also suggest carrying out response detection with calibrating gas to the sensor module, to guarantee that the atmosphere environment supervision device really rises
To the effect of protection.
Since the sensor module is sealed in the detection gas chamber, the detection gas chamber is joined end to end by gas-guide tube
It is mounted on the box house, the temperature of the cabinet will have a direct impact on the detection gas chamber, the sensor, the air guide
Thus the temperature of pipe influences the pretreated temperature to test sample gas, so after in order to make external temperature not influence pretreatment
The temperature to test sample gas, the atmosphere environment supervision device further includes spin manifold temperature control unit, spin manifold temperature control
Unit includes that the intracorporal temperature sensor of the case is arranged in, the heating sheet of the bottom of box is arranged in and is arranged in cabinet institute
The cooling fan at top is stated, the master controller is separately connected the temperature sensor, the heating sheet and the cooling fan.
Specifically, the atmosphere environment supervision device further includes solar powered power supply, the solar powered power supply packet
Include lithium battery and solar battery, it is preferred that the lithium battery is 19.8Ah 3.7V lithium ion battery, in the case where full electricity
Can be with continuous work 20 days or more, device automatically switches to solar cell for supplying power mould in the daytime good situation of solar irradiation
Formula, and charge to by high-power quick-charging circuit to the lithium battery, to guarantee in the good feelings of fine day solar irradiation
It quickly charges to lithium battery under condition, avoids powering off caused by because of continuous rainy weather, equipment stops working.
Trace gas detection result is uploaded to described by the atmosphere environment supervision device by the wireless communication module
Server, the management platform are connect with the server, monitor in real time quality of air environment and realize online data inquiry and
Statistical report form, online data automatic early-warning and environmental protection information comprehensive analysis.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, it should be understood by those ordinary skilled in the art that: still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (10)
1. a kind of Atmosphere Environment Monitoring System Bases, it is characterised in that: flat including multiple atmosphere environment supervision devices, server and management
Platform, the atmosphere environment supervision device include cabinet and setting the intracorporal sample gas pretreatment unit of the case, master controller,
Gas chamber and wireless communication module are detected, is provided with sensor module in the detection gas chamber,
The sample gas pretreatment unit is connect with the master controller, treats test sample gas according to the detection instruction of the master controller
Carry out constant temperature, constant pressure and constant current pretreatment；
The sensor module is used to carry out minimum gas Concentration Testing to test sample gas to pretreated, and by trace gas physical examination
It surveys result and returns to the master controller；
Trace gas detection result is uploaded to the server by the wireless communication module by the master controller；
The management platform is connect with the server, trace gas detection result described in real time inspection.
2. Atmosphere Environment Monitoring System Bases according to claim 1, it is characterised in that: the sample gas pretreatment unit includes shell
Body, the heating end cap that described shell one end is arranged in, the air inlet that the shell other end is arranged in and setting are in the shell
Intracorporal gas conduit, the fire end, which covers, is provided with gas outlet, the air inlet, the gas conduit and the gas outlet
It is sequentially connected to form the gas circuit to test sample gas；
The air inlet is provided with Temperature Humidity Sensor, and the gas conduit inner wall is provided with heating device, the master controller
It is connect respectively with the Temperature Humidity Sensor and the heating device, institute is controlled according to the testing result of the Temperature Humidity Sensor
State heating device work；
The gas outlet is provided with pressure sensor, flow sensor and flow controller, the master controller respectively with it is described
Pressure sensor, the flow sensor are connected with the flow controller, are passed according to the pressure sensor and the flow
The testing result of sensor controls the flow controller work.
3. Atmosphere Environment Monitoring System Bases according to claim 1 or 2, it is characterised in that: the sensor module includes gas
Body sensor, signal amplification and processing circuit and the single-chip microcontroller for being built-in with A/D converting unit,
The single-chip microcontroller receives detection instruction, controls the sensor detection to test sample gas according to detection instruction；
The sensor generates electric signal and is sent to the signal amplification and processing circuit；
The signal amplification and processing circuit amplify processing to the electric signal, and will be described in amplified electric signal feeding
A/D converting unit carries out A/D conversion；
The single-chip microcontroller is calculated according to the digital signal obtained after preset standard concentration signal and conversion to trace gas in test sample gas
The type and concentration of body.
4. Atmosphere Environment Monitoring System Bases according to claim 3, which is characterized in that the preset standard concentration signal obtains
Take step are as follows:
Step 1, the single-chip microcontroller receives calibration instruction, and the Zero calibration of sensor is carried out according to the calibration instruction；
Step 2, judge whether Zero calibration succeeds, if not successfully, the number of accumulative Zero calibration simultaneously re-starts zero point mark
It is fixed, and there are failures for judgement sensor when continuously Zero calibration is failed three times；If success, carries out normal concentration mark
It is fixed；
Step 3, whether judgment criteria concentration calibration succeeds, if success, to the single-chip microcontroller return calibration successful information and
Normal concentration signal；If failed, the number of accumulated standard concentration calibration, and continuously normal concentration calibration is failed three times
When determines sensor, and there are failures.
5. Atmosphere Environment Monitoring System Bases according to claim 4, which is characterized in that the Zero calibration specifically:
It is passed through in the detection gas chamber using the oxygen calibrating gas without target minimum gas as zero gas, when ventilation is default
After length, in next preset duration, the numerical value of the primary sensor is recorded every prefixed time interval；
Average record value, Mei Gechuan are sought to all record values in each sensor preset duration in the sensor respectively
The average record value of sensor is its zero point value.
6. Atmosphere Environment Monitoring System Bases according to claim 4, which is characterized in that the normal concentration calibration specifically:
Selection standard target minimum gas is passed through in the detection gas chamber, after preset duration of ventilating, in next preset duration,
The numerical value of the primary sensor is recorded every prefixed time interval；
Average record value, Mei Gechuan are sought to all record values in each sensor preset duration in the sensor respectively
The average record value of sensor is its preset standard concentration signal.
7. Atmosphere Environment Monitoring System Bases according to claim 1 or 2, it is characterised in that: the atmosphere environment supervision device
Further include spin manifold temperature control unit, the spin manifold temperature control unit include setting the intracorporal temperature sensor of the case,
The heating sheet of the bottom of box is set and the cooling fan at top described in cabinet is set, the master controller is separately connected
The temperature sensor, the heating sheet and the cooling fan.
8. Atmosphere Environment Monitoring System Bases according to claim 1 or 2, it is characterised in that: the atmosphere environment supervision device
It further include GPS positioning module, the GPS positioning module is used to obtain the position of the distributed atmosphere environment supervision device in real time
Information is simultaneously uploaded to the server by the wireless communication module.
9. Atmosphere Environment Monitoring System Bases according to claim 1 or 2, it is characterised in that: the atmosphere environment supervision device
It further include solar powered power supply.
10. Atmosphere Environment Monitoring System Bases according to claim 1 or 2, it is characterised in that: the master controller uses
MSP430F67471A single-chip microcontroller.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112798673A (en) * | 2020-12-28 | 2021-05-14 | 汉威科技集团股份有限公司 | Multi-parameter malodorous gas concentration online monitoring method |
| CN113671119A (en) * | 2021-08-02 | 2021-11-19 | 德尔格安全设备（中国）有限公司 | Gas detection device and temperature compensation method thereof |
| CN114136752A (en) * | 2021-12-03 | 2022-03-04 | 沃森能源技术（廊坊）有限公司 | Sample gas constant temperature device with temperature change resistance and sample gas pretreatment system |
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