CN110672793A - Multi-parameter microenvironment air quality monitoring device capable of achieving rapid and accurate detection - Google Patents
Multi-parameter microenvironment air quality monitoring device capable of achieving rapid and accurate detection Download PDFInfo
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- CN110672793A CN110672793A CN201910958552.6A CN201910958552A CN110672793A CN 110672793 A CN110672793 A CN 110672793A CN 201910958552 A CN201910958552 A CN 201910958552A CN 110672793 A CN110672793 A CN 110672793A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 10
- 238000001514 detection method Methods 0.000 title claims description 5
- 239000000428 dust Substances 0.000 claims abstract description 20
- 239000002245 particle Substances 0.000 claims abstract description 20
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 3
- 238000004891 communication Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract description 10
- 239000007789 gas Substances 0.000 description 29
- 238000012544 monitoring process Methods 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- KTXUOWUHFLBZPW-UHFFFAOYSA-N 1-chloro-3-(3-chlorophenyl)benzene Chemical compound ClC1=CC=CC(C=2C=C(Cl)C=CC=2)=C1 KTXUOWUHFLBZPW-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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 or temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- 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
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
A multi-parameter microenvironment air quality monitoring device capable of being rapidly and accurately detected comprises: the device comprises a back plate, a shell, a liquid crystal display and function keys, wherein the liquid crystal display and the function keys are arranged on the shell, a PCB is arranged in an inner space wrapped by the shell and the back plate, a MCU, an LORA module, a dust particle sensor and a sensor chamber are arranged on the PCB, the sensor chamber is provided with a plurality of four-electrode gas sensors, the MCU is electrically connected with the LORA module and the plurality of four-electrode gas sensors, and a gas outlet of the dust particle sensor is communicated with the sensor chamber; and the flow regulator is arranged in the sensor chamber, and gas entering the sensor chamber is regulated to a preset speed by the flow regulator and then sequentially passes through the four-electrode gas sensors at a uniform speed. The sampling rate and the sampling precision are improved, the concentration value of each gas can be remotely monitored in real time, operations such as remote closing display, opening display and calibration can be carried out, and the power consumption of the whole machine is also reduced.
Description
Technical Field
The invention relates to the technical field of air quality monitoring, in particular to a multi-parameter microenvironment air quality monitoring device capable of realizing rapid and accurate detection.
Background
At present, a large part of air quality monitoring devices only monitor concentration data of one gas singly, and multiple gases need to be monitored by a plurality of instruments, so that time and labor are wasted, and the operation is troublesome.
The environment air quality monitoring sensor in China mostly adopts a three-electrode electrochemical sensor which consists of a W electrode, a C electrode and an R electrode, wherein the W electrode is a working electrode for oxidation reaction, the C electrode is a counter electrode for reduction reaction, and the R electrode is a reference electrode capable of providing constant potential. The traditional three-electrode electrochemical sensor has good stability, but long response time and large zero drift.
The traditional gas monitoring instrument measures by using a gas diffusion principle and has the problems of long sampling time, low speed, poor precision and the like. At present, most wireless sensing networks adopt a 2.4G ZIGBEE communication mode, ZIGBEE modules have the problems of high power consumption, poor penetrability and the like, the transmitting current reaches 50mA, and the wireless sensing networks can only transmit 200 meters at the farthest distance.
Disclosure of Invention
In order to overcome the problems of single-response gas monitoring, long time, slow speed, poor precision and the like, the invention provides a multi-parameter microenvironment air quality monitoring device capable of quickly and accurately detecting.
The invention provides a multi-parameter microenvironment air quality monitoring device capable of rapidly and accurately detecting, which comprises: the device comprises a back plate, a shell, a liquid crystal display and function keys, wherein the liquid crystal display and the function keys are arranged on the shell, a PCB is arranged in an inner space wrapped by the shell and the back plate, the PCB is provided with a MCU, an LORA module, a dust particle sensor and a sensor chamber, the sensor chamber is provided with a plurality of four-electrode gas sensors, the MCU is electrically connected with the LORA module and the plurality of four-electrode gas sensors, the air inlet of the dust particle sensor extends out of the surface of the shell, the air outlet of the dust particle sensor is communicated with the sensor chamber, the sensor chamber is also provided with an air outlet, and the air outlet extends; and the flow regulator is arranged in the sensor chamber, and gas entering the sensor chamber is regulated to a preset speed by the flow regulator and then sequentially passes through the four-electrode gas sensors.
In some embodiments, the predetermined rate is 300 ml/min.
In some embodiments, the plurality of four-electrode gas sensors comprises: an SO2 sensor, a CO sensor, an NO2 sensor, an O3 sensor.
In some embodiments, a drying filter membrane is further disposed on a channel of the dust particle sensor, wherein the air outlet of the dust particle sensor is communicated with the sensor chamber.
In some embodiments, a micro-fan is provided within the dust particle sensor for causing air to be drawn in from the suction port.
In some embodiments, the PCB board is further provided with a communication interface.
In some embodiments, the sensor chamber is provided with a sealing ring at the communication with the exhaust port.
In some embodiments, the device is powered by a battery or a solar cell.
According to the embodiment, after entering the sensor chamber, the gas firstly flows through the flow regulator, and then sequentially passes through the four-electrode gas sensors at uniform speed, so that each sensor is stably and fully contacted with the sampled gas, and compared with the traditional measurement mode by using a diffusion principle, the sampling speed and the sampling precision are improved; the gas concentration data acquired by the LORA module through wireless transmission not only can remotely monitor the concentration value of each gas in real time and carry out operations such as remote closing display, opening display and calibration, but also can reduce the power consumption of the whole machine due to the advantage of low power consumption of the LORA module.
Drawings
FIG. 1 is a top view of a multi-parameter microenvironment air quality monitoring apparatus of the present application;
FIG. 2 is a bottom view of the multi-parameter microenvironment air quality monitoring apparatus of the present application;
fig. 3 is an internal structure view of the back plate of the multiparameter microenvironment air quality monitoring device of the present application as seen from a back-up viewing angle.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
Referring to fig. 1-3, the present application provides a multi-parameter microenvironment air quality monitoring device capable of fast and accurate detection, the device includes: the back plate 19, the shell 20 and the liquid crystal display 16 and the function keys 17 arranged on the shell 20, the function keys 17 can realize the functions of opening, closing, calibrating and the like of the device, and the liquid crystal display 16 can simultaneously display time, temperature, relative humidity, other environmental parameters, electric quantity and recording state. The inner space that shell 20 and backplate 19 wrapped up is provided with PCB board 11, be provided with MCU13 on the PCB board 11, LORA module 12, dust particle sensor 1 and sensor room 4, sensor room 4 is provided with a plurality of four-electrode gas sensor, MCU13 and LORA module 12, a plurality of four-electrode gas sensor electricity is connected, the shell 20 surface is stretched out to dust particle sensor 1's air inlet 2, dust particle sensor 1's gas outlet 3 is linked together with sensor room 4, sensor room 4 still is provided with gas vent 9, this gas vent 9 stretches out the shell 20 surface.
In some embodiments, a flow regulator (not shown) is also disposed within the sensor chamber 4, and in some embodiments, the flow regulator may be a regulator valve.
In some embodiments, the plurality of four-electrode gas sensors comprises: an SO2 sensor 5, a CO sensor 6, a NO2 sensor 7, and an O3 sensor 8.
In some embodiments, the predetermined rate is 300 ml/min.
In some embodiments, a dry filter membrane 10 is further disposed on the channel where the air outlet 3 of the dust particle sensor 1 communicates with the sensor chamber 4.
In some embodiments, a micro fan 15 is disposed in the dust particle sensor 1 for sucking air from the air inlet 2, and the micro fan 15 is also used as a sampling power source, so that an additional air pump can be ingeniously omitted, and the sampling power consumption of the device is reduced.
In one specific embodiment, the dust particle sensor 1 sucks gas from a suction port through a micro fan 15, and measures the concentration of PM2.5 and PM10 of the gas; then, the gas comes out from the gas outlet 3, is filtered by a drying filter membrane 10 and then enters the sensor chamber 4; after entering the sensor chamber 4, the gas firstly flows through the flow regulator, and sequentially passes through the SO2 sensor 5, the CO sensor 6, the NO2 sensor 7 and the O3 sensor 8 at an even speed of 300ml/min, SO that each sensor is stably and fully contacted with the sampled gas, and compared with the traditional measurement mode by using the diffusion principle, the sampling speed and the sampling precision are improved. The signal that produces when gaseous passing through each sensor is through enlargiing and AD conversion back, is gathered, calculation, data processing by MCU13, produces concentration result data, and the gaseous concentration data of gathering is through on passing through LORA module 12 with wireless transmission to the server again, and the user can visit the server through computer or cell-phone APP, acquires relevant information, realizes the concentration value of each gas of remote real time monitoring to and carry out operations such as long-range closing display, opening demonstration and calibration. The LORA module 12 has the advantage of low power consumption, the emission current of the module is only 10mA, which is reduced by 80% compared with the current common wireless module, and the LORA module 12 has a low power consumption sleep mode, which can reduce the power consumption of the whole machine.
In some embodiments, the PCB 11 is further provided with a communication interface 14, and the communication interface 14 can also be connected to obtain the collected gas concentration data through a data line.
In some embodiments, the sensor chamber 4 is provided with a sealing ring at the communication position (where the air outlet 3 of the dust particle sensor 1 is communicated with the sensor chamber 4) and the air outlet 9, so as to prevent air leakage and ensure that the sensor chamber is a closed space, thereby ensuring the stability and uniformity of sampling.
The power supply mode of the device is battery or solar battery power supply.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (8)
1. The utility model provides a but multi-parameter microenvironment air quality monitoring devices of quick accurate detection which characterized in that includes: the device comprises a back plate, a shell, a liquid crystal display and function keys, wherein the liquid crystal display and the function keys are arranged on the shell, a PCB is arranged in an inner space wrapped by the shell and the back plate, the PCB is provided with a MCU, an LORA module, a dust particle sensor and a sensor chamber, the sensor chamber is provided with a plurality of four-electrode gas sensors, the MCU is electrically connected with the LORA module and the plurality of four-electrode gas sensors, the air inlet of the dust particle sensor extends out of the surface of the shell, the air outlet of the dust particle sensor is communicated with the sensor chamber, the sensor chamber is also provided with an air outlet, and the air outlet extends; and the flow regulator is arranged in the sensor chamber, and gas entering the sensor chamber is regulated to a preset speed by the flow regulator and then sequentially passes through the four-electrode gas sensors at a uniform speed.
2. The apparatus of claim 1, wherein the predetermined rate is 300 ml/min.
3. The apparatus of claim 1, wherein the plurality of four-electrode gas sensors comprises: an SO2 sensor, a CO sensor, an NO2 sensor, an O3 sensor.
4. The apparatus of claim 1, wherein a dry filter is disposed in the passage communicating the outlet of the dust particle sensor with the sensor chamber.
5. The apparatus of claim 1, wherein a micro fan is provided in the dust particle sensor for causing air to be drawn in through the suction port.
6. The apparatus of claim 1, wherein the PCB board further has a communication interface disposed thereon.
7. The method of claim 1, wherein the sensor chamber is provided with a sealing ring at the communication with the exhaust port.
8. The device of any one of claims 1 to 7, wherein the device is powered by a battery or solar cell.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910958552.6A CN110672793A (en) | 2019-10-10 | 2019-10-10 | Multi-parameter microenvironment air quality monitoring device capable of achieving rapid and accurate detection |
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| CN201910958552.6A CN110672793A (en) | 2019-10-10 | 2019-10-10 | Multi-parameter microenvironment air quality monitoring device capable of achieving rapid and accurate detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147280A (en) * | 2020-09-04 | 2020-12-29 | 北京英视睿达科技有限公司 | Remote calibration method for sensor for ambient air monitoring and ambient air quality monitoring device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758997A (en) * | 2016-03-28 | 2016-07-13 | 河北巢乐环保科技有限公司 | Improved harmful gas detecting equipment |
| CN205607971U (en) * | 2016-05-10 | 2016-09-28 | 国家档案局档案科学技术研究所 | Air quality detector |
| CN106092842A (en) * | 2016-06-22 | 2016-11-09 | 北京工业大学 | High-precision gas concentration based on LoRa and particle concentration self-powered monitoring system |
| CN106770981A (en) * | 2017-02-10 | 2017-05-31 | 安徽京师方圆信息技术有限公司 | A kind of atmosphere quality monitoring device |
| CN106871965A (en) * | 2017-03-16 | 2017-06-20 | 清华大学 | A kind of multicomponent atmospheric environment gridding monitor |
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2019
- 2019-10-10 CN CN201910958552.6A patent/CN110672793A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758997A (en) * | 2016-03-28 | 2016-07-13 | 河北巢乐环保科技有限公司 | Improved harmful gas detecting equipment |
| CN205607971U (en) * | 2016-05-10 | 2016-09-28 | 国家档案局档案科学技术研究所 | Air quality detector |
| CN106092842A (en) * | 2016-06-22 | 2016-11-09 | 北京工业大学 | High-precision gas concentration based on LoRa and particle concentration self-powered monitoring system |
| CN106770981A (en) * | 2017-02-10 | 2017-05-31 | 安徽京师方圆信息技术有限公司 | A kind of atmosphere quality monitoring device |
| CN106871965A (en) * | 2017-03-16 | 2017-06-20 | 清华大学 | A kind of multicomponent atmospheric environment gridding monitor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147280A (en) * | 2020-09-04 | 2020-12-29 | 北京英视睿达科技有限公司 | Remote calibration method for sensor for ambient air monitoring and ambient air quality monitoring device |
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Application publication date: 20200110 |