CN205426735U - Air quality tester - Google Patents
Air quality tester Download PDFInfo
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- CN205426735U CN205426735U CN201620172095.XU CN201620172095U CN205426735U CN 205426735 U CN205426735 U CN 205426735U CN 201620172095 U CN201620172095 U CN 201620172095U CN 205426735 U CN205426735 U CN 205426735U
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- air
- air quality
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- quality detector
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Abstract
The utility model particularly relates to an air quality tester, include: fan, laser generator, silicon photocell, photodiode, analog signal modulate circuit, analog to digital conversion circuit, calculation judgement circuit and display, wherein, laser generator sets up in the air -out direction of fan, its light -emitting direction with silicon photocell's illumination face is parallel, photodiode, its input with silicon photocell connects, its output with the input of analog signal modulate circuit is connected, the output of analog signal modulate circuit with analog to digital conversion circuit's input is connected, analog to digital conversion circuit's output with it connects to calculate the input of judging the circuit, it connects to calculate the output of judging the circuit the display. Through the technical scheme of the utility model, can realize utilizing the detection of laser lamp -house solid particle thing concentration in to the air.
Description
Technical field
This utility model relates to air quality detecting device, is specifically related to a kind of air quality detector.
Background technology
Along with improving constantly of living standard, people's environmental consciousness the most gradually strengthens, and air pollution problems inherent has caused social concerns widely.So-called air pollution, refers to the pollutant containing one or more excess in air, and these pollutant destroy biological chain, even hurt the mankind, vegeto-animal life.
The harm of air pollution on human mainly shows as respiratory tract disease, and the harm to plant is mainly manifested in its physiological mechanism of suppression, makes undergrowth, resistant to diseases and insects weaken.Additionally, air pollution can also produce harmful effect to weather, as reduced visibility, reduce the radiation of the sun, cause the increase of city rickets rate.And, atmosphere pollution also can corrosives, affect product quality.Therefore, in order to tackle air pollution, Detection of Air Quality equipment arises at the historic moment.
Current Detection of Air Quality equipment, it mostly is dependence infrared ray sensor the solid particulate matter in environment is detected, but infrared ray sensor light application requirements to external world is higher, being disturbed relatively big in the sun, the accuracy of detection of solid particulate matter content is affected bigger by the light wave-absorbing property of reflection object.
Utility model content
In view of this, the purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of air quality detector, it is achieved utilize LASER Light Source to the detection of solid particle substrate concentration in air.
For realizing object above, this utility model adopts the following technical scheme that
A kind of air quality detector, including: fan, laser generator, silicon cell, photodiode, analog signal conditioner circuit, analog to digital conversion circuit, calculating decision circuitry and display, wherein,
Described laser generator, is arranged on the air-out direction of described fan, and its light direction is parallel with the plane of illumination of described silicon cell；Described photodiode, its input is connected with described silicon cell, and its outfan is connected with the input of described analog signal conditioner circuit；The described outfan of analog signal conditioner circuit is connected with the input of analog-digital conversion circuit as described, and the outfan of analog-digital conversion circuit as described is connected with the input of described calculating decision circuitry, and the outfan of described calculating decision circuitry connects described display.
Preferably, described air quality detector, also include that charge amplifying circuit, the input of described charge amplifying circuit are connected with the outfan of described photodiode, the outfan of described charge amplifying circuit is connected with the input of described analog signal conditioner circuit.
Preferably, described calculating decision circuitry includes that memorizer, described memorizer prestore different air quality grade corresponding to solid particle substrate concentration, and different protection suggestion and measure corresponding to solid particle substrate concentration.
Preferably, described laser generator, it is arranged on the air-out direction of described fan, its light direction is vertical with the air-out direction of described fan；The plane of illumination of described silicon cell is vertical with the air-out direction of described fan.
Preferably, described air quality detector, also include air temperature sensor and the air humidity sensor being connected with described analog signal conditioner circuit input end.
Preferably, described air quality detector, also include the TVOC sensor being connected with described analog signal conditioner circuit input end.
Preferably, described air quality detector, also include the clock circuit being connected with described calculating decision circuitry input.
Preferably, described air quality detector, also include the speaker being connected with described calculating decision circuitry outfan.
Preferably, described air quality detector, also include that the solid bulky grain being arranged on described silicon cell plane of illumination dead ahead clashes into wall and is arranged on the dust collecting groove immediately below described laser generator, described solid bulky grain clashes into wall and is made of clear material.
This utility model uses above technical scheme, at least possesses following beneficial effect:
Fan provides stable air-flow, solid particulate matter is blown to the light direction of laser generator, after the light that laser generator sends is irradiated on solid particulate matter, scatter, the silicon cell being arranged on 90 ° of directions of laser generator can detect that the light of scattering, the photodiode being connected with silicon cell export to analog signal conditioner circuit after converting optical signals into the signal of telecommunication；The analogue signal of analog signal conditioner circuit output becomes numeral electric impulse signal after analog to digital conversion circuit, calculate decision circuitry according to the described numeral height of electric impulse signal and the electric pulse quantity of unit interval, calculate the concentration of solid particulate matter in air, and by display, described concentration is shown to user.This air quality detector provided by this utility model, can realize utilizing LASER Light Source to the detection of solid particle substrate concentration in air.
Accompanying drawing explanation
The schematic block diagram of a kind of air quality detector that Fig. 1 provides for this utility model one embodiment；
The schematic block diagram of a kind of air quality detector that Fig. 2 provides for another embodiment of this utility model.
Detailed description of the invention
Below by drawings and Examples, the technical solution of the utility model is described in further detail.The schematic block diagram of a kind of air quality detector that Fig. 1 provides for this utility model one embodiment, sees Fig. 1, a kind of air quality detector that the present embodiment provides, including:
Fan 100, laser generator 101, silicon cell 102, photodiode 103, analog signal conditioner circuit 104, analog to digital conversion circuit 105, calculating decision circuitry 106 and display 107, wherein,
Described laser generator 101, is arranged on the air-out direction of described fan 100, and its light direction is parallel with the plane of illumination of described silicon cell 102；Described photodiode 103, its input is connected with described silicon cell 102, and its outfan is connected with the input of described analog signal conditioner circuit 104；The outfan of described analog signal conditioner circuit 104 is connected with the input of analog-digital conversion circuit as described 105, the outfan of analog-digital conversion circuit as described 105 is connected with the input of described calculating decision circuitry 106, and the outfan of described calculating decision circuitry 106 connects described display 107.
By technique scheme, fan provides stable air-flow, solid particulate matter is blown to the light direction of laser generator, after the light that laser generator sends is irradiated on solid particulate matter, scatter, the silicon cell being arranged on 90 ° of directions of laser generator can detect that the light of scattering, the photodiode being connected with silicon cell export to analog signal conditioner circuit after converting optical signals into the signal of telecommunication；The analogue signal of analog signal conditioner circuit output becomes numeral electric impulse signal after analog to digital conversion circuit, calculate decision circuitry according to the described numeral height of electric impulse signal and the electric pulse quantity of unit interval, calculate the concentration of solid particulate matter in air, and by display, described concentration is shown to user.This air quality detector provided by this utility model, can realize utilizing LASER Light Source to the detection of solid particle substrate concentration in air.
The schematic block diagram of a kind of air quality detector that Fig. 2 provides for this utility model one embodiment, see Fig. 2, further, described air quality detector, also include charge amplifying circuit 108, the input of described charge amplifying circuit 108 is connected with the outfan of described photodiode 103, and the outfan of described charge amplifying circuit 108 is connected with the input of described analog signal conditioner circuit 104.
It is understandable that, the voltage signal of photodiode output is the faintest, set up charge amplifying circuit, the voltage signal intensity that photodiode exports can be amplified to the degree that analog signal conditioner circuit can identify, be conducive to the signal processing of subsequent conditioning circuit, be equivalent to enhance the signal capture sensitivity of air quality detector.
Preferably, described calculating decision circuitry 106 includes memorizer (not shown in accompanying drawing), and described memorizer prestores different air quality grade corresponding to solid particle substrate concentration, and different protection suggestion and measure corresponding to solid particle substrate concentration.
It is understandable that, owing to memorizer prestores the air quality grade corresponding to different solid particle substrate concentration, and the protection suggestion and measure that difference is corresponding to solid particle substrate concentration, so calculating decision circuitry can calculate solid particle substrate concentration, and current air quality grade can be judged according to the concentration of solid particles calculated, and which kind of safeguard procedures user should take, and it is shown to user by display.
See Fig. 2, further, described laser generator 101, it is arranged on the air-out direction of described fan 100, its light direction is vertical with the air-out direction of described fan 100；The plane of illumination of described silicon cell 102 is vertical with the air-out direction of described fan 100.
It is understandable that, fan and laser generator and silicon cell keep such position relationship, more solid particulate matter can be blown on the light direction of laser generator by fan, make silicon cell more solid particulate matter be detected, be equivalent to improve the detection sensitivity of air quality detector.
See Fig. 2, further, described air quality detector, also include air temperature sensor 110 and the air humidity sensor 109 being connected with described analog signal conditioner circuit 104 input.
It is understood that set up air temperature sensor and air humidity sensor, this utility model can realize the detection of air humidity and air themperature, and is shown to user by display.
See Fig. 2, further, described air quality detector, also include the TVOC sensor 111 being connected with described analog signal conditioner circuit 104 input.
It is understood that set up TVOC sensor, this utility model can realize the detection of total volatile organism in air, and is shown to user by display.
See Fig. 2, further, described air quality detector, also include the clock circuit 112 being connected with described calculating decision circuitry 106 input.
It is understood that set up clock, this utility model can display to the user that current date and time by display.
See Fig. 2, further, described air quality detector, also include the speaker 113 being connected with described calculating decision circuitry 106 outfan.
It is understood that set up speaker, this utility model can realize reporting air quality to user speech, if air quality is poor, can issue the user with prompting.
Preferably, described air quality detector, also including that the solid bulky grain being arranged on described silicon cell plane of illumination dead ahead clashes into wall (not shown in accompanying drawing) and is arranged on the dust collecting groove (not shown in accompanying drawing) immediately below described laser generator, described solid bulky grain clashes into wall and is made of clear material.
It is understood that set up solid bulky grain to clash into wall and dust collecting groove, silicon cell and the circuit that is connected with silicon cell can be made from dust, dust and other bulky grain pollutant effects, thus improve ruggedness.
To sum up, this air quality detector that this utility model provides, fan provides stable air-flow, solid particulate matter is blown to the light direction of laser generator, after the light that laser generator sends is irradiated on solid particulate matter, scattering, the silicon cell being arranged on 90 ° of directions of laser generator can detect that the light of scattering, the photodiode being connected with silicon cell export to analog signal conditioner circuit after converting optical signals into the signal of telecommunication；The analogue signal of analog signal conditioner circuit output becomes numeral electric impulse signal after analog to digital conversion circuit, calculate decision circuitry according to the described numeral height of electric impulse signal and the electric pulse quantity of unit interval, calculate the concentration of solid particulate matter in air, and by display, described concentration is shown to user.This air quality detector provided by this utility model, can realize utilizing LASER Light Source to the detection of solid particle substrate concentration in air.
Further, since be additionally arranged air temperature sensor and air humidity sensor, this utility model can realize the detection of air humidity and air themperature, and is shown to user by display；Owing to being additionally arranged TVOC sensor, this utility model can realize the detection of total volatile organism in air, and is shown to user by display；Owing to being additionally arranged clock, this utility model can display to the user that current date and time by display；Owing to being additionally arranged speaker, this utility model can realize reporting air quality to user speech, if air quality is poor, can issue the user with prompting.
This utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but in its shape or structure, make any change; every have same as the present application or akin technical scheme, within all falling within protection domain of the present utility model.
Claims (9)
1. an air quality detector, it is characterised in that including: fan, laser generator, silicon cell, photodiode, analog signal conditioner circuit, analog to digital conversion circuit, calculating decision circuitry and display, wherein,
Described laser generator, is arranged on the air-out direction of described fan, and its light direction is parallel with the plane of illumination of described silicon cell；Described photodiode, its input is connected with described silicon cell, and its outfan is connected with the input of described analog signal conditioner circuit；The described outfan of analog signal conditioner circuit is connected with the input of analog-digital conversion circuit as described, and the outfan of analog-digital conversion circuit as described is connected with the input of described calculating decision circuitry, and the outfan of described calculating decision circuitry connects described display.
Air quality detector the most according to claim 1, it is characterized in that, also including that charge amplifying circuit, the input of described charge amplifying circuit are connected with the outfan of described photodiode, the outfan of described charge amplifying circuit is connected with the input of described analog signal conditioner circuit.
Air quality detector the most according to claim 1, it is characterized in that, described calculating decision circuitry includes that memorizer, described memorizer prestore different air quality grade corresponding to solid particle substrate concentration, and different protection suggestion and measure corresponding to solid particle substrate concentration.
Air quality detector the most according to claim 1, it is characterised in that described laser generator, is arranged on the air-out direction of described fan, and its light direction is vertical with the air-out direction of described fan；The plane of illumination of described silicon cell is vertical with the air-out direction of described fan.
Air quality detector the most according to claim 1, it is characterised in that also include air temperature sensor and the air humidity sensor being connected with described analog signal conditioner circuit input end.
Air quality detector the most according to claim 1, it is characterised in that also include the TVOC sensor being connected with described analog signal conditioner circuit input end.
Air quality detector the most according to claim 1, it is characterised in that also include the clock circuit being connected with described calculating decision circuitry input.
Air quality detector the most according to claim 1, it is characterised in that also include the speaker being connected with described calculating decision circuitry outfan.
9. according to the air quality detector described in any one of claim 1～8, it is characterized in that, also including that the solid bulky grain being arranged on described silicon cell plane of illumination dead ahead clashes into wall and is arranged on the dust collecting groove immediately below described laser generator, described solid bulky grain clashes into wall and is made of clear material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620172095.XU CN205426735U (en) | 2016-03-07 | 2016-03-07 | Air quality tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620172095.XU CN205426735U (en) | 2016-03-07 | 2016-03-07 | Air quality tester |
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| Publication Number | Publication Date |
|---|---|
| CN205426735U true CN205426735U (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620172095.XU Expired - Fee Related CN205426735U (en) | 2016-03-07 | 2016-03-07 | Air quality tester |
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| CN (1) | CN205426735U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547952A (en) * | 2016-03-07 | 2016-05-04 | 吴德炳 | Air quality detector |
| CN109580442A (en) * | 2019-01-10 | 2019-04-05 | 中煤科工集团重庆研究院有限公司 | A kind of non-maintaining laser dust concentration sensor |
-
2016
- 2016-03-07 CN CN201620172095.XU patent/CN205426735U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547952A (en) * | 2016-03-07 | 2016-05-04 | 吴德炳 | Air quality detector |
| CN109580442A (en) * | 2019-01-10 | 2019-04-05 | 中煤科工集团重庆研究院有限公司 | A kind of non-maintaining laser dust concentration sensor |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20200307 |
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| CF01 | Termination of patent right due to non-payment of annual fee |