CN206258345U - There is module and its device for detecting particles in a kind of laser - Google Patents
There is module and its device for detecting particles in a kind of laser Download PDFInfo
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- CN206258345U CN206258345U CN201621205789.5U CN201621205789U CN206258345U CN 206258345 U CN206258345 U CN 206258345U CN 201621205789 U CN201621205789 U CN 201621205789U CN 206258345 U CN206258345 U CN 206258345U
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Abstract
The utility model provides a kind of laser and module and its device for detecting particles occurs, laser occurs module includes module housing, vertically disposed air flow channel and laser channeling in module housing, laser lamp is disposed with laser channeling, lens, first dividing plate and second partition, module housing is provided with optical cavity trap in the side of second partition, coaxial loophole is provided with first dividing plate and second partition, first dividing plate, second partition, surround to form the air flow channel between the bottom and top of module housing, the laser beam sent from laser lamp sequentially passes through lens, injected after loophole and air flow channel in optical cavity trap.There is module and set in modularization in the utility model compact conformation, laser, laser optical path is unified in advance to be fixed, it is only necessary to the laser into module occurs and is fixed in the housing of device for detecting particles, realize standardization and the uniformity of the laser optical path of all products；Avoid the unstable technical problem of laser optical path in the prior art.
Description
Technical field
The utility model is related to air particles detection technique field, and particle is carried out more particularly, to a kind of laser scattering method
There is module and device for detecting particles in the laser of concentration analysis.
Background technology
With developing rapidly for industry, global air quality is constantly deteriorated.Various particles in air are all a lot
Insalubrity.The PM2.5 for especially receiving much concern at present, makes people more pay attention to influence of the air quality for health,
Therefore in the market occurs in that many devices detected to air particles.
Existing PM2.5 detection of particles instrument principle is：After air enters air channel from its air intake, sent in LASER Light Source
Laser irradiation under, air particles produce scattering light, scattering illumination be mapped on optical pickocff, effect of the last air in fan
Under from air outlet slit discharge device for detecting particles, so as to complete an air circulation.
However, existing PM2.5 detection of particles instrument is not reasonable due to the structure setting of generating device of laser, there is light
Road is influenceed larger by the artificial operation of assembling, the skimble-scamble phenomenon of light intensity between individuality, so as to influence PM2.5 detection of particles instrument to particle
The accuracy of detection of concentration, thus there is the bad phenomenon that output result misalignment or testing result differ greatly.
Utility model content
The purpose of this utility model is to provide a kind of laser module and its device for detecting particles occur, to solve existing skill
Light path present in art is influenceed larger by the artificial operation of assembling, the skimble-scamble technical problem of light intensity between individuality.
In order to solve the above technical problems, a kind of laser that the utility model is provided occurs module, it includes module housing, mould
Vertically disposed air flow channel and laser channeling in block housing, are disposed with laser lamp, lens, first on the laser channeling
Dividing plate and second partition；The module housing is provided with optical cavity trap in the side of the second partition；First dividing plate and
Coaxial loophole is provided with second partition；First dividing plate, conjunction between second partition, the bottom of module housing and top
Enclose to form the air flow channel.
There is module and set in modularization in the utility model compact conformation, laser, laser optical path is unified in advance to be fixed, in system
During the devices such as standby air particles detector, it is only necessary to the laser into module occurs and is fixed in the housing of detector, it is possible thereby to
Realize standardization and the uniformity of the laser optical path of all products；The unstable technology of laser optical path in the prior art is avoided to ask
Topic.
Further, one piece or some is provided with the module housing between the lens and first dividing plate
The purification plate of block gap arrangement；The through hole passed through for laser beam is provided with the purification plate.
The purification plate is used to shelter from scattering light and play a part of to purify laser optical path.
Further, the module housing is provided with light trapping chamber in second partition away from the side of first dividing plate；
Light absorbent is equipped with the inwall in the light trapping chamber.
Further, deflecting plate is provided with the light trapping chamber, the deflecting plate is non-perpendicular with the laser beam injected to be set
Put, the laser beam for will be injected into the light trapping chamber is refracted to the side wall in the light trapping chamber.
By setting deflecting plate, the direct vertical irradiation of laser beam is prevented to the inwall in light trapping chamber, so that at utmost
Ground reduces the probability that laser beam is reflected back by former road, so as to avoid the reflected light from disturbing and pollute light path.
Further, the module housing is wrapped with panel beating plate or the metal plate layer for being electromagnetically shielded.
It is a kind of using above-mentioned laser occur module device for detecting particles, the device for detecting particles include Instrument shell,
There is module in gas channel, photoelectric sensor and the laser set in the Instrument shell；The photoelectric sensor is installed
In the air flow channel that the laser occurs module；The gas channel includes the first air channel, the air stream that are sequentially communicated
Road and the second air channel.
Further, the medial extremity in first air channel and the second air channel respectively with the inlet and outlet of the air flow channel
Connection；The outboard end in first air channel and the second air channel is respectively arranged with air inlet and air outlet；First air channel or
Fan is provided with second air channel.
Further, the bottom of the module housing is provided with for by the light in the corresponding position of the air flow channel
Electric transducer is put into the opening in the air flow channel.
Further, the device for detecting particles also includes circuit board, and the circuit board is by the inner chamber of the Instrument shell
It is divided into upper chamber and lower chambers；There is module and be arranged on the bottom chamber in the laser, laser occurs the module case of module
The bottom of body is fitted in the circuit board positioned at the side of the bottom chamber.
Position-limit mechanism is provided between the bottom of the module housing and the circuit board, the position-limit mechanism is spacing hole
And positive stop lug boss.
Further, the Instrument shell is made up of upper shell and lower house, and the circuit board is fixedly installed on upper shell
And lower house between, circuit board forms the upper chamber with the upper shell, and circuit board forms the cavity of resorption with the lower house
Room；Lower house inner side is provided with the dividing plate that first air channel and the second air channel are formed for surrounding.
The land and column for supporting the circuit board are provided with the upper shell；It is provided with the lower house urgent
The circuit board is set to be resisted against the fixed column in land and column.
Further, the module housing is detachably connected with the Instrument shell by buckle and hole clipping.
Further, the fan is centrifugal fan.
Further, electronic component is provided with the front of the side positioned at the upper chamber of the circuit board, electricity
Metal plate housing is covered with the plate front of road, electronic component is stated for shielding electromagnetic interference in metal plate case cover residence.
Further, fan mounting holes are provided with the circuit board, the fan is inserted into fan mounting holes；It is described
Air outlet is arranged on the side plate of the upper shell.
Further, processor, power supply module, signal processing circuit and data/power supply are provided with the circuit board
Interface；The power supply module is connected with fan.
Further, the power supply module includes step-down chip, and step-down chip enters for outside 5V voltages to be down into 3.3V
And be that circuit board is powered.5V power supplys are directly for fan is powered.
Using above-mentioned technical proposal, the utility model has the advantages that：
There is module and its device for detecting particles, compact conformation in the laser that the utility model is provided, laser occurs module and is in
Modularization is set, and laser optical path is unified in advance to be fixed, and the air channel of air particles detector is fixed.In assembling air particles detector
Deng device when, it is only necessary to by the laser occur module fix in the housing of detector, realize the laser optical path of all products
Standardization and uniformity, the uniformity in air detection instrument air channel；The unstable technology of laser optical path in the prior art is avoided to ask
Topic, improves the accuracy of PM2.5 detection of particles, reduces the difference between each device.
Brief description of the drawings
Below will be right in order to illustrate more clearly of the utility model specific embodiment or technical scheme of the prior art
The accompanying drawing to be used needed for specific embodiment or description of the prior art is briefly described, it should be apparent that, describe below
In accompanying drawing be some implementation methods of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
There is the front view of module for the laser that the utility model embodiment is provided in Fig. 1；
Fig. 2 is that the laser shown in Fig. 1 occurs the left view of module；
Fig. 3 is that the laser shown in Fig. 2 occurs the AA views of module；
Fig. 4 is the three-dimensional view of the air particles detection means air outlet side that the utility model embodiment 2 is provided；
Fig. 5 is the three-dimensional view of the air particles detection means air inlet side that the utility model embodiment 2 is provided；
Fig. 6 is that the air particles detection means that the utility model embodiment 2 is provided removes structural representation after upper shell；
Fig. 7 is that the air particles detection means that the utility model embodiment 2 is provided removes structural representation after lower house；
Fig. 8 is that the air particles detection means that the utility model embodiment 2 is provided removes lower house and laser occurs module
Structural representation afterwards；
Fig. 9 is the hollow flow channel path schematic diagram of air particles detection means that the utility model embodiment 2 is provided；
Figure 10 is the circuit module schematic diagram of the air particles detection means that the utility model embodiment 2 is provided.
Reference：
10- module housings；11- bottoms；
11a- is open；11c- positive stop lug boss；
12- tops；12a- buckles；
13- air flow channels；13a- is exported；
13b- imports；14- laser channelings；
15- laser lamps；16- lens；
The dividing plates of 17- first；18- second partitions；
19- light trappings chamber；19a- deflecting plates；
20- purification plates；20a- through holes；
21- loopholes；30- Instrument shells；
30a- hole clippings；31- upper shells；
32- lower houses；33- suppending holes；
The air channels of 34- first；34a- air inlets；
The air channels of 35- second；35a- air outlets；
36- lower chambers；37- upper chamber；
38- dividing plates；39-6PIN connectors；
40- photoelectric sensors；50- fans；
60- circuit boards；61- spacing holes；
62- fan mounting holes.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, this
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
It is term " " center ", " on ", D score, "left", "right", " perpendicular, it is necessary to explanation in description of the present utility model
Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outward " are, based on orientation shown in the drawings or position relationship, to be only
Described with simplified for the ease of description the utility model, must had rather than the device or element for indicating or implying meaning specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.Additionally, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.
, it is necessary to explanation, unless otherwise clearly defined and limited, term " is pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedly
Connection；Can mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary,
Can be two connections of element internal.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
Explanation is further explained to the utility model with reference to specific embodiment.
Embodiment 1
As Figure 1-3, there is module, including module housing 10, module housing 10 in a kind of laser that the present embodiment is provided
Interior vertically disposed air flow channel 13 and laser channeling 14, are disposed with laser lamp 15, lens 16, first on laser channeling 14
Dividing plate 17 and second partition 18, module housing 10 is provided with light trapping chamber 19 in the side of second partition 18, specially second
Dividing plate 18 is provided with light trapping chamber 19 away from the side of the first dividing plate 17；It is provided with first dividing plate 17 and second partition 18 coaxial
Loophole 21, the laser beam sent from laser lamp 15 sequentially passes through lens 16, loophole 21 and incident light after air flow channel 13
In trap chamber 19；
First dividing plate 17, between second partition 18, the bottom of module housing 10 and top surround to form air flow channel 13；
The bottom of module housing 10 is provided with for photoelectric sensor to be put into air in the corresponding position of air flow channel 13
Opening 11a in runner 13.
It should be noted that in the present embodiment, on laser channeling 14 right-to-left be provided with laser lamp 15, lens 16,
First dividing plate 17 and second partition 18, light trapping chamber 19 is provided with the left side of second partition 18.Of the present utility model another
In a little embodiments, can also be provided with from left to right on laser channeling 14 laser lamp 15, lens 16, the first dividing plate 17 and second every
Plate 18, light trapping chamber 19 is provided with the right side of second partition 18.
There is module and set in modularization in the utility model compact conformation, laser, laser optical path is unified in advance to be fixed, in system
During the devices such as standby air particles detector, it is only necessary to the laser into module occurs and is fixed in the housing of device for detecting particles, by
This standardization that can realize the laser optical path of all products and uniformity；Avoid laser optical path in the prior art unstable
Technical problem.
The bottom of module housing 10 includes base plate and the side plate around bottom edge, and the two can be formed with integrated injection molding,
Can be fixed together by modes such as bondings, the utility model is not limited this.Similar, the top bag of module housing 10
Top board and the side plate around ceiling edge are included, the two can be formed with integrated injection molding, it is also possible to be fixed on one by modes such as bondings
Rise, the utility model is not limited this.In the present embodiment, corresponding position of the base plate of module housing 10 in air flow channel 13
Be provided with the opening 11a for photoelectric sensor being put into air flow channel 13.
The laser lamp chamber and lens for placing laser lamp 15 and lens 16 respectively are provided between top 12 and bottom 11
Chamber, is respectively used to fix laser lamp 15 and lens 16.
And the preferred fit mode of top and bottom is, top 12 is provided with draw-in groove, the periphery of bottom 11 at its opening's edge
Snap in draw-in groove, and then realize that top 12 is fixedly connected with bottom 11.After which connection, fixed between bottom and top
More fasten, so as to both loosen in avoiding production process, and then influence the stability of light path.
The net of one piece or some block gaps arrangement is provided with module housing 10 between the dividing plate 17 of lens 16 and first
Change plate 20；The through hole 20a passed through for laser is provided with purification plate 20, wherein, through hole 20a is coaxially disposed with loophole 21,
Purification plate 20 is used to shelter from scattering light and play a part of to purify laser optical path.
Deflecting plate 19a, deflecting plate 19a and the non-perpendicular setting of the laser beam injected are provided with light trapping chamber 19, for inciting somebody to action
The laser beam being injected into light trapping chamber 19 is refracted on the side wall in light trapping chamber 19.Suction is equipped with the inwall in light trapping chamber 19
Luminescent material.
By setting deflecting plate 19a, the direct vertical irradiation of laser beam is prevented to the inwall in light trapping chamber 19, so that maximum
Degree ground reduces the probability that laser beam is reflected back by former road, so as to avoid the reflected light from disturbing and pollute light path.
Embodiment 2
As shown in figs 1-9, dress is detected the utility model discloses a kind of air particles that module occurs using above-mentioned laser
Put, it includes Instrument shell 30, Instrument shell 30 is made up of upper shell 31 and lower house 32.Wherein, 33 is suppending hole.
Gas channel, photoelectric sensor 40 and laser are provided with Instrument shell 30 module occurs；Module housing 10 is covered
Photoelectric sensor 40, photoelectric sensor 40 is arranged on laser to be occurred in the air flow channel 13 of module.Specially module housing 10
Bottom is provided with the opening 11a for photoelectric sensor 40 to be put into the corresponding position of air flow channel 13.It is further module
The base plate of housing 10 is provided with the opening 11a for installing photoelectric sensor 40 in the corresponding position of air flow channel 13.Laser lamp
15 and lens 16 position through calculating, ensure that the light that laser lamp 15 sends forms focus at the 11a of opening just, therefore
Photoelectric sensor 40 is enabled to fully to detect light path focus, so as to ensure that the accuracy and sensitivity of detection of particles.
In addition, module housing 10 is wrapped with panel beating plate or the metal plate layer for being electromagnetically shielded.Panel beating plate or metal plate layer
Material be, for example, copper-nickel alloy.
Module housing 10 is detachably connected with Instrument shell 30 by buckle 12a and hole clipping 30a.
Gas channel in Instrument shell 30 includes the first air channel 34, the air channel of air flow channel 13 and second that are sequentially communicated
35, the medial extremity in the first air channel 34 and the second air channel 35 is connected with the import 13b and outlet 13a of air flow channel 13 respectively；Air
The inlet and outlet of runner 13 is less than normal compared with the first air channel 34 and the second air channel 35, therefore, it is possible to ensure the air of air inlet runner
Flow velocity higher is kept in this section, so as to increase efficiency and the sensitivity of measurement.First air channel 34 and the outside in the second air channel 35
End is respectively arranged with air inlet 34a and air outlet 35a.Air inlet 34a and air outlet 35a are separately positioned on Instrument shell 30
On left and right two sides.
In the utility model embodiment, fan 50 is provided with air outlet 35a closing on the second air channel 35.Fan 50
Preferably centrifugal fan.
Device for detecting particles also includes circuit board 60, and the inner chamber of Instrument shell 30 is divided into the He of upper chamber 37 by circuit board 60
Lower chambers 36；There is module and be arranged in lower chambers 36 in laser, the bottom laminating that laser occurs the module housing 10 of module is leaned against
Circuit board 60 is located on the side of lower chambers, that is, be fitted in circuit board 60 towards the back on the side of lower house 32.Wherein, 39
It is the 6PIN plugs on circuit board 60.
Position-limit mechanism is provided between the bottom of module housing 10 and circuit board 60, position-limit mechanism includes being arranged on circuit board
Spacing hole 61 on 60 and it is arranged on the bottom upper limit boss 11c of module housing 10.Spacing hole 61 coordinates with positive stop lug boss 11c,
Prevent laser from module occurring and produce dislocation.
Circuit board 60 is located on the front of the side (i.e. positioned at circuit board 60 towards the side of upper shell 31) of upper chamber and sets
Electronic component is equipped with, metal plate housing is covered with the front electronic component of circuit board 60, metal plate housing covers electronic component to be used for
Shielding electromagnetic interference.The material of metal plate housing is, for example, copper-nickel alloy.
Circuit board 60 is fixedly installed between upper shell 31 and lower house 32, and circuit board 60 forms upper chamber with upper shell 31
37, circuit board 60 forms lower chambers 36 with lower house 32；The inner side of lower house 32 is provided with to form the He of the first air channel 34 for surrounding
The dividing plate 38 in the second air channel 35.The material of the dividing plate can be reinforcement, on the one hand for the wind of closed first air channel 34 and second
Road 35, on the other hand for limiting the flow direction of air, while the physical arrangement of whole device for detecting particles can be strengthened, prevents
Only it is deformed upon in the presence of external force.
The land and column for supporting the circuit board 60 are provided with upper shell 31；It is provided with lower house 32 and is forced
Circuit board 60 is resisted against the fixed column in land and column.
Fan mounting holes 62 are provided with circuit board 60, fan 50 is inserted into fan mounting holes 62.In present embodiment
In, air inlet 34a and air outlet 35a is arranged on the side of housing 30, it is preferred that be separately positioned on two relative sides of housing 30
On face.
As shown in Figure 10, processor CPU, power supply module, detection circuit module and 6PIN are provided with circuit board 60 to connect
Plug-in unit (data/power interface)；
External power source is by 6PIN connectors directly to electric fan module for power supply, there is provided 5V voltages, wherein by step-down chip
Step-down is powered with to other circuit modules.Specifically, supply voltage is reduced to 3.3V via step-down chip, gives detection circuit
Module, CPU and laser module are powered；External power source keeps 5V constant, is powered directly to blower module；
The optical signal that optical pickocff is received is converted into electric signal and is sent to CPU by detection circuit module.CPU controls swash
Optical module constantly sends laser, and control fan adjustment rotating speed keeps steady air current.Wherein, laser module include laser lamp and
Its interlock circuit.
There is module and its device for detecting particles, compact conformation in the laser that the utility model is provided, laser occurs module and is in
Modularization is set, and laser optical path is unified in advance to be fixed, when the devices such as air particles detector are prepared, it is only necessary to by laser hair
Raw module is fixed in the housing of detector, it is possible thereby to realize standardization and the uniformity of the laser optical path of all products；Carry
The accuracy of PM2.5 detection of particles high, reduces the difference between each device.
Finally it should be noted that：Various embodiments above is only used to illustrate the technical solution of the utility model, rather than it is limited
System；Although being described in detail to the utility model with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (10)
1. there is module in a kind of laser, it is characterised in that including vertically disposed air flow channel in module housing, module housing and
Laser channeling；Laser lamp, lens, the first dividing plate and second partition are disposed with the laser channeling；The module housing
The side of the second partition is provided with optical cavity trap；Coaxial printing opacity is provided with first dividing plate and second partition
Hole；First dividing plate, between second partition, the bottom of module housing and top surround to form the air flow channel.
2. there is module in laser according to claim 1, it is characterised in that in the lens and institute in the module housing
The purification plate that one piece or some block gaps arrangement are provided between the first dividing plate is stated, is provided with for laser on the purification plate
The through hole that beam passes through.
3. there is module in laser according to claim 1, it is characterised in that the module housing is in second partition away from institute
The side for stating the first dividing plate is provided with light trapping chamber；Light absorbent is equipped with the inwall in the light trapping chamber.
4. there is module in laser according to claim 3, it is characterised in that be provided with deflecting plate in the light trapping chamber,
The deflecting plate and the non-perpendicular setting of the laser beam injected, the laser beam for will be injected into the light trapping chamber are refracted to institute
State on the side wall in light trapping chamber.
5. there is module in laser according to claim 1, it is characterised in that the module housing is wrapped with for electromagnetism
Panel beating plate or the metal plate layer of shielding.
6. there is the device for detecting particles of module in a kind of laser including described in claim any one of 1-5, it is characterised in that institute
Stating device for detecting particles includes the gas channel of setting, photoelectric sensor and the laser in Instrument shell, the Instrument shell
Generation module；The photoelectric sensor is arranged on the laser to be occurred in the air flow channel of module；The gas channel include according to
First air channel of secondary connection, the air flow channel and the second air channel.
7. device for detecting particles according to claim 6, it is characterised in that the inner side in first air channel and the second air channel
The inlet and outlet respectively with the air flow channel is held to connect；The outboard end in first air channel and the second air channel is respectively arranged with
Air inlet and air outlet；Fan is provided with first air channel or the second air channel.
8. device for detecting particles according to claim 6, it is characterised in that the bottom of the module housing is in the air
The corresponding position of runner is provided with the opening for being put into the photoelectric sensor in the air flow channel.
9. device for detecting particles according to claim 6, it is characterised in that the device for detecting particles also includes circuit
The inner chamber of the Instrument shell is divided into upper chamber and lower chambers by plate, the circuit board；There is module and be arranged in the laser
The bottom chamber, the bottom that laser occurs the module housing of module is fitted in the circuit board positioned at the one of the bottom chamber
Side.
10. device for detecting particles according to claim 9, it is characterised in that the Instrument shell is by upper shell and lower casing
Body is constituted, and the circuit board is fixedly installed between upper shell and lower house, and circuit board forms the epicoele with the upper shell
Room, circuit board forms the lower chambers with the lower house；Lower house inner side is provided with to form first air channel for surrounding
With the dividing plate in the second air channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621205789.5U CN206258345U (en) | 2016-11-08 | 2016-11-08 | There is module and its device for detecting particles in a kind of laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621205789.5U CN206258345U (en) | 2016-11-08 | 2016-11-08 | There is module and its device for detecting particles in a kind of laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206258345U true CN206258345U (en) | 2017-06-16 |
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ID=59025469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621205789.5U Active CN206258345U (en) | 2016-11-08 | 2016-11-08 | There is module and its device for detecting particles in a kind of laser |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907457A (en) * | 2017-12-18 | 2018-04-13 | 北京绿刻度科技有限公司 | A kind of particulate matter quality concentration sensor |
| CN108562525A (en) * | 2018-06-15 | 2018-09-21 | 古盼 | Air detecting device |
| CN108680476A (en) * | 2018-06-20 | 2018-10-19 | 苏州百创达环保科技有限公司 | A kind of particle concentration detection device |
| CN109187296A (en) * | 2018-09-03 | 2019-01-11 | 海拉（厦门）电气有限公司 | A kind of laser PM2.5 dust sensor with self-purifying system |
| CN109444010A (en) * | 2018-12-13 | 2019-03-08 | 美时美克(上海)汽车电子有限公司 | A kind of air passage structure of laser class detection of air quality module |
-
2016
- 2016-11-08 CN CN201621205789.5U patent/CN206258345U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907457A (en) * | 2017-12-18 | 2018-04-13 | 北京绿刻度科技有限公司 | A kind of particulate matter quality concentration sensor |
| CN108562525A (en) * | 2018-06-15 | 2018-09-21 | 古盼 | Air detecting device |
| CN108680476A (en) * | 2018-06-20 | 2018-10-19 | 苏州百创达环保科技有限公司 | A kind of particle concentration detection device |
| CN109187296A (en) * | 2018-09-03 | 2019-01-11 | 海拉（厦门）电气有限公司 | A kind of laser PM2.5 dust sensor with self-purifying system |
| CN109444010A (en) * | 2018-12-13 | 2019-03-08 | 美时美克(上海)汽车电子有限公司 | A kind of air passage structure of laser class detection of air quality module |
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