CN203981543U - Air particle weight sensing instrument - Google Patents
Air particle weight sensing instrument Download PDFInfo
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- CN203981543U CN203981543U CN201420291553.2U CN201420291553U CN203981543U CN 203981543 U CN203981543 U CN 203981543U CN 201420291553 U CN201420291553 U CN 201420291553U CN 203981543 U CN203981543 U CN 203981543U
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- air
- laser
- fore shell
- weight sensing
- sensing instrument
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Abstract
The utility model provides a kind of air particle weight sensing instrument, comprises fore shell and back cover, and the junction of described fore shell and back cover is provided with start button and mute button; On the outside of described fore shell, be provided with display screen; The outer setting of described back cover has exhausr port and air intake opening; The inside of described fore shell is provided with circuit board; On described circuit board, be provided with laser base and photovoltaic cell; Described laser base inside is disposed with laser generator, focusing lens and laser sensor; Between described laser generator and focusing lens, be provided with shadow shield; Between described focusing lens and laser sensor, be provided with shadow shield; On described laser base, laser sensor place is provided with the air hole for air turnover; The top of described laser base is provided with air-flow supercharging device; Described exhaust ports is provided with fan blower.Usefulness of the present utility model is: simple in structure, easy to use, easy to carry, can carry out measurement and monitoring to the pollutant such as PM2.5 and PM10 in air fast and accurately.
Description
(1) technical field
The utility model relates to a kind of atmosphere quality monitoring device, particularly relates to a kind of air particle weight sensing instrument.
(2) background technology
PM2.5 is fine particle.Fine particle claims again particulate, fine grained, PM2.5.Fine particle refers to that in surrounding air, aerodynamics equivalent diameter is less than or equal to the particle of 2.5 microns.It can be suspended in air the long period, and its content concn in air is higher, just represents that air pollution is more serious.Although PM2.5 is the little component of content in earth atmosphere composition, it has important impact to air quality and visibility etc.Compared with thicker Atmospheric particulates, PM2.5 particle diameter is little, and area is large, active strong, easily subsidiary poisonous and harmful substances (for example, heavy metal, microorganism etc.), and residence time in atmosphere is long, fed distance is far away, thereby larger on the impact of health and atmosphere quality.
PM10 is pellet.Conventionally particle diameter, the particle below 10 microns calls PM10, is called again pellet or floating dust.The diameter of particle is less, and the position that enters respiratory tract is darker.The particle of 10 micron diameters is deposited on the upper respiratory tract conventionally, the deep of the entered respiratory tract of 5 micron diameters, and 2 microns following can 100% be deep into bronchiole and alveolar.It is chronic that pellet continues in surrounding air, of great impact to health and atmospheric visibility.Some particles are from the direct discharge of pollution source, such as chimney and vehicle.Other are by surrounding air sulphur oxide, oxides of nitrogen, volatile organic compounds and other compound fine particle thing forming that interacts, and their chemistry and physical composition are different and alter a great deal according to place, weather, season in 1 year.The dust that the motor vehicle that pellet comes to exercise on the road surface of comfortable not black top, cement conventionally, the fragmentation of material are milled processing procedure and kicked up by wind.
Air quality detector refers to and is exclusively used in the special testing instrument of measuring PM2.5 in air or PM10 numerical value.Be applicable to the mensuration of public place environment, atmospheric environment and room air, also can be used for the evaluation analysis of air purifier purification efficiency.
The utility model provides a kind of device that utilizes Laser Focusing technology to carry out the particle in detecting air fluid.Mainly airborne PM2.5 and PM10 are carried out to Real-Time Monitoring.
(3) utility model content
In order to overcome the weak point of existing atmosphere quality monitoring device, the utility model provides air particle weight sensing instrument.
The technical solution of the utility model is achieved in that
The air particle weight sensing instrument of this programme, comprises fore shell and back cover, it is characterized in that: the junction of described fore shell and back cover is provided with start button and mute button; On the outside of described fore shell, be provided with display screen; The outer setting of described back cover has exhausr port and air intake opening; The inside of described fore shell is provided with circuit board; On described circuit board, be provided with laser base and photovoltaic cell; Described laser base inside is disposed with laser generator, focusing lens and laser sensor; Between described laser generator and focusing lens, be provided with shadow shield; Between described focusing lens and laser sensor, be provided with shadow shield; On described laser base, laser sensor place is provided with the air hole for air turnover; The top of described laser base is provided with air-flow supercharging device; Described exhaust ports is provided with fan blower.
Further, described start button, mute button, display screen, laser generator, laser sensor and fan blower are all connected with circuit board.
Further, described laser generator, laser sensor, display screen and fan blower are all connected with photovoltaic cell.
Further, described air-flow supercharging device is connected with air intake opening.
Further, the width of described air-flow supercharging device is reduced gradually by air intake opening to laser base.
Usefulness of the present utility model is: simple in structure, easy to use, easy to carry, can carry out measurement and monitoring to the pollutant such as PM2.5 and PM10 in air fast and accurately.
(4) brief description of the drawings
Fig. 1 is design sketch of the present utility model.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is the cut-open view of Fig. 1 along B-B'.
Fig. 4 is the cut-open view of Fig. 1 along A-A'.
Fig. 5 is the utility model laser base work schematic diagram.
Fig. 6 is the pulse waveform of PM2.5 and PM10.
Fig. 7 is the graph of a relation of voltage and fan blower fan speed.
Fig. 8 is particle trace routine flow process.
Fig. 9 is power supply controlling party block diagram.
Wherein: 1-fore shell, 2-back cover, the 3-button of starting shooting, 4-mute button, 5-display screen, 6-exhausr port, 7-air intake opening, 8-circuit board, 9-laser base, 10-laser generator, 11-focusing lens, 12-laser sensor, 13-air-flow supercharging device, 14-fan blower, 15-photovoltaic cell, 16-shadow shield.
(5) embodiment
Below in conjunction with accompanying drawing, a kind of embodiment of the present utility model is made to brief description.
As the air particle weight sensing instrument of Fig. 1 to Fig. 5, comprise fore shell 1 and back cover 2, the junction of described fore shell 1 and back cover 2 is provided with start button 3 and mute button 4; On the outside of described fore shell 1, be provided with display screen 5; The outer setting of described back cover 2 has exhausr port 6 and air intake opening 7; The inside of described fore shell 1 is provided with circuit board 8; On described circuit board 8, be provided with laser base 9 and photovoltaic cell 15; At the bottom of described laser, 9 inside are disposed with laser generator 10, focusing lens 11 and laser sensor 12; Between described laser generator 10 and focusing lens 11, be provided with shadow shield 16; Between described focusing lens 11 and laser sensor 12, be provided with shadow shield; On described laser base 9, laser sensor 12 places are provided with the air hole for air turnover; The top of described laser base 9 is provided with air-flow supercharging device 13; Described exhausr port 6 places are provided with fan blower 14; Described start button 3, mute button 4, display screen 5, laser generator 10, laser sensor 11 and fan blower 14 are all connected with circuit board; Described laser generator 10, laser sensor 12, display screen 5 and fan blower 14 are all connected with photovoltaic cell 15; Described air-flow supercharging device 13 is connected with air intake opening 7; The width of described air-flow supercharging device 13 is reduced gradually by air intake opening 6 to laser base 9.
The course of work of this example: circuit board 8 is connected with fore shell 1 by bolt, laser base 9 and photovoltaic cell 15 are fixed on circuit board 8, fan blower 14 is fixed on back cover 2, fore shell 1 and back cover 2 are combined and have been formed shell of the present utility model, in the time that the utility model is worked, under the effect of fan blower 14, air is entered by air intake opening 7, under the effect of air-flow supercharging device 13, accelerate the flowing velocity of air, air is entered by the air hole of laser base 9, Fig. 3 has shown laser base 9, laser generator 10, the position of focusing lens 11 and laser sensor 12.This structure can produce laser spot in the time that machine is worked, when particle is through out-of-date generation photosignal.Laser base 9 is one-body molded by mold injection, be used for controlling and shielding self and external light source, reduce the interference to laser sensor 12, in laser base 9, there are special laser channeling and multiple shadow shield 16, can shield the interference that external light source and self scattering produce, the laser that laser base 9 sends can not be reflected back toward laser base 9 inside, has a refraction extinction device at laser tail end, laser sensor 12 is effectively shielded to light interference and play an important role.In the time of air process laser base 9, laser sensor 12 can receive the electric pulse wave signal that airborne various particle produces, these electric signal are sent into amplifier by the sensor on circuit board 8 and are amplified, amplifier band high resistant two-stage selective frequency amplifier circuit, measure the signal of particulate in air, the outside Circuit tuning that increases of amplifier, can assist the error producing when revising part self error and producing.The signal that filter circuit is sent here amplifier circuit is again processed again, other unwanted particle electric signal of filtering, microprocessor can be processed useful particulate matter signal and carry out analyzing and processing and calculate the information such as particle size and weight, on display screen 5, also can show other information simultaneously, as: the information such as air grade, quality, humiture.Finally, air is discharged by exhausr port 6.
Fig. 6 is the pulse waveform of PM2.5 and PM10.When needs detect air through air intake opening 7, in air with particle information enter machine intimate simultaneously, air-flow control circuit can stable air flowing velocity.When laser beam that airborne particle sends through generating laser 10, laser sensor 12 can sense the size dimension information of particle and these information are produced to electric signal, and the electric signal that sensor is produced enters after amplifier circuit, filter circuit can output as the pulse waveform of Fig. 6 demonstration.
Air-flow control circuit output voltage provides electric energy to the fan of fan blower 14, voltage and rotation speed relation are as shown in Figure 7, speed feedback circuit feedback fan rotating speed signals, processor judges fan speed by the tach signal that calculates fan feedback, if when rotating speed detected lower than setting value, processor can increase the value of PWM, and now voltage can raise to improve rotation speed of the fan, in the time of velocity-stabilization, it is constant that fan voltage can keep.Because fan duty has certain error, at this moment processor can be processed the error of fan, processor detects when fan feedback signal is found fan speed higher than setting value, can reduce the value of PWM, voltage can reduce rotation speed of the fan, and in the time of velocity-stabilization, it is constant that fan voltage can keep, as cocycle carrys out constant fan speed, thereby reach the object of steady air flow and air pressure.
As shown in Figure 9, energy supply control module provides charge power supply by USB mouth, also can be used as machine power supply uses simultaneously, after USB connects with the mains, charging circuit carries out Charge Management to battery, when charging, charging circuit can be exported corresponding charging signals notification processor, and the symbol that charges on screen can show redness, represent that charger connects, charge.Battery is full of after electricity, and charging circuit can feed back to a signal to processor, and the symbol that charges on screen can show green, represents that charging completes, and in charging process, all power supplys provide by charger.In the situation that there is no external power supply, start shooting, all electric energy all have battery to provide, booster circuit provides and stablizes clean DC direct current to machine work through mu balanced circuit again after battery can being boosted, when work, processor can monitor battery electric quantity constantly, battery electric quantity is during lower than powered battery minimum, system can be closed all power supplys automatically, and battery is in off-state.
Above an embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variation and improvement etc. of doing according to the utility model application range, within all should still belonging to patent covering scope of the present utility model.
Claims (6)
1. air particle weight sensing instrument, comprises fore shell and back cover, it is characterized in that: the junction of described fore shell and back cover is provided with start button and mute button; On the outside of described fore shell, be provided with display screen; The outer setting of described back cover has exhausr port and air intake opening; The inside of described fore shell is provided with circuit board; On described circuit board, be provided with laser base and photovoltaic cell; Described laser base inside is disposed with laser generator, focusing lens and laser sensor; Between described laser generator and focusing lens, be provided with shadow shield; Between described focusing lens and laser sensor, be provided with shadow shield; On described laser base, laser sensor place is provided with the air hole for air turnover; The top of described laser base is provided with air-flow supercharging device; Described exhaust ports is provided with fan blower.
2. air particle weight sensing instrument according to claim 1, is characterized in that: described start button, mute button, display screen, laser generator, laser sensor and fan blower are all connected with circuit board.
3. air particle weight sensing instrument according to claim 1, is characterized in that: described laser generator, laser sensor, display screen and fan blower are all connected with photovoltaic cell.
4. air particle weight sensing instrument according to claim 1, is characterized in that: described air-flow supercharging device is connected with air intake opening.
5. air particle weight sensing instrument according to claim 3, is characterized in that: the width of described air-flow supercharging device is reduced gradually by air intake opening to laser base.
6. air particle weight sensing instrument according to claim 1, is characterized in that: the sidepiece of described fore shell is provided with USB mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420291553.2U CN203981543U (en) | 2014-06-03 | 2014-06-03 | Air particle weight sensing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420291553.2U CN203981543U (en) | 2014-06-03 | 2014-06-03 | Air particle weight sensing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203981543U true CN203981543U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420291553.2U Expired - Fee Related CN203981543U (en) | 2014-06-03 | 2014-06-03 | Air particle weight sensing instrument |
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| CN (1) | CN203981543U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136634A (en) * | 2015-08-13 | 2015-12-09 | 杭州克霾环保科技有限公司 | Simplified efficient haze meter |
| CN106353228A (en) * | 2016-08-19 | 2017-01-25 | 安徽奥创环境检测有限公司 | Portable air particulate matter tester |
| CN108120662A (en) * | 2017-12-27 | 2018-06-05 | 福建省永正工程质量检测有限公司 | A kind of architectural engineering indoor environment particulate matter detection means |
-
2014
- 2014-06-03 CN CN201420291553.2U patent/CN203981543U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136634A (en) * | 2015-08-13 | 2015-12-09 | 杭州克霾环保科技有限公司 | Simplified efficient haze meter |
| CN106353228A (en) * | 2016-08-19 | 2017-01-25 | 安徽奥创环境检测有限公司 | Portable air particulate matter tester |
| CN108120662A (en) * | 2017-12-27 | 2018-06-05 | 福建省永正工程质量检测有限公司 | A kind of architectural engineering indoor environment particulate matter detection means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20170603 |