CN204514761U - Laser dust sensor - Google Patents
Laser dust sensor Download PDFInfo
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- CN204514761U CN204514761U CN201520017278.XU CN201520017278U CN204514761U CN 204514761 U CN204514761 U CN 204514761U CN 201520017278 U CN201520017278 U CN 201520017278U CN 204514761 U CN204514761 U CN 204514761U
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- laser
- circuit board
- housing
- dust sensor
- air
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Abstract
The utility model discloses a kind of laser dust sensor, comprise housing, generating laser, circuit board and photodetector.Housing is provided with air intake opening, is provided with the U-shaped gas channel be communicated with air intake opening in housing.Generating laser is contained in housing, irradiates the air-flow through gas channel for Emission Lasers.Circuit board is contained in housing.Photodetector is arranged on circuit board, and photodetector can receive laser and irradiates the particle in air-flow and reflect the light signal of generation and produce corresponding electric signal, circuit board also for the treatment of described electric signal to obtain size and the concentration of the particle of air-flow.So, due to U-shaped gas channel, the effect that air inlet is stable can be reached, make measurement more accurate.By the particle of laser measurement dust, measure accurately, highly sensitive, production cost is low.
Description
Technical field
The utility model relates to sensor field, especially relates to a kind of laser dust sensor.
Background technology
Conventional art adopts infrared rays survey dust granules, but measures not accurate enough, and insufficient sensitivity is high.
Utility model content
The utility model is intended at least to solve one of technical matters existed in prior art.For this reason, the utility model needs to provide a kind of laser dust sensor.
According to a kind of laser dust sensor of the utility model better embodiment, comprise housing, generating laser, circuit board and photodetector.Described housing is provided with air intake opening, is provided with the U-shaped gas channel be communicated with described air intake opening in described housing.Described generating laser is contained in described housing, irradiates the air-flow through described U-shaped gas channel for Emission Lasers.Described circuit board is contained in described housing.Described photodetector is arranged on circuit board, described photodetector can receive described laser and irradiates the particle in described air-flow and reflect the light signal of generation and produce corresponding electric signal, described circuit board also for the treatment of described electric signal to obtain size and the concentration of the particle of described air-flow.
The laser dust sensor of the utility model better embodiment, owing to adopting described U-shaped gas channel, can reach the effect that air inlet is stable, makes measurement more accurate.By the particle of laser measurement dust, measure accurately, highly sensitive, production cost is low.
In some embodiments, described housing comprises upper shell and lower house, and described upper shell coordinates with described circuit board and is formed with cavity, and described upper shell is formed with described air intake opening, and described air intake opening is positioned at directly over described cavity.
In some embodiments, described circuit board is formed with the airflow hole aiming at described air intake opening.
In some embodiments, described lower house coordinates with described circuit board and is formed with gas channel.
In some embodiments, described lower house is provided with described generating laser, and described gas channel aimed at by described generating laser.
In some embodiments, described generating laser is fixed on fixture, and described fixture is located in lower house.
In some embodiments, be provided with air extractor in described housing, described air extractor is located between described upper shell and described lower house and described air extractor is arranged at the endpiece of described gas channel, and described air extractor is used for bleeding outside described housing.
In some embodiments, described air extractor is fan.
In some embodiments, described circuit board is provided with receiver, and described receiver is for receiving described light signal and described light signal being converted to electric signal.
In some embodiments, described upper shell and described lower house are wrapped up by U-shaped handware, and described handware is formed with the through hole be communicated with described air intake opening.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the floor map of the laser dust sensor according to the utility model embodiment.
Fig. 2 is the explosive view of the laser dust sensor according to the utility model embodiment.
Fig. 3 is the floor map of the lower house of laser dust sensor according to the utility model embodiment.
Fig. 4 is the floor map of the upper shell of laser dust sensor according to the utility model embodiment.
Fig. 5 is the vertical view of the circuit board of laser dust sensor according to the utility model embodiment.
Fig. 6 is the upward view of the circuit board of laser dust sensor according to the utility model embodiment.
Fig. 7 is the side view of the circuit board of laser dust sensor according to the utility model embodiment.
Fig. 8 is the rear view of the laser dust sensor according to the utility model embodiment.
Fig. 9 is the vertical view of the handware of laser dust sensor according to the utility model embodiment.
Figure 10 is the side view of the handware of laser dust sensor according to the utility model embodiment.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more described features.In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly.Can be mechanical connection, also can be electrical connection.Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is less than second feature.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the utility model.In addition, the utility model can in different example repeat reference numerals and/or reference letter, this repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the utility model provides and the example of material, but those of ordinary skill in the art can recognize the application of other techniques and/or the use of other materials.
Refer to Fig. 1 to Fig. 3, comprise housing 12, generating laser 14, circuit board 16 and photodetector according to the laser dust sensor 10 of the utility model better embodiment.Housing 12 is provided with air intake opening 120, is provided with the U-shaped gas channel 20 be communicated with air intake opening 120 in housing 12.Generating laser 14 is contained in housing 12, irradiates the air-flow through gas channel 20 for Emission Lasers.Circuit board 16 is contained in housing 12.Photodetector is located on circuit board 16, and photodetector can receive laser and irradiates the particle in air-flow and reflect the light signal of generation and produce corresponding electric signal, circuit board 16 also for the treatment of electric signal to obtain size and the concentration of the particle of air-flow.
The laser dust sensor 10 of the utility model better embodiment, owing to adopting generating laser 14, by laser measurement dust granules, measures accurately, highly sensitive, can measure dust in air concentration more accurately.
Please particularly, housing 12 is rectangular, and air intake opening 120 is rectangular, and air-flow is entered in housing 12 by air intake opening 120.Housing 12 adopts plastic cement to make, and housing 12 contains circuit board 16 and generating laser 14.Generating laser 14 Emission Lasers, the dust granules in air-flow is by laser light scattering, and light signal, to different light signals, is converted to electric signal by photoelectric detector on circuit board 16 subsequently.After circuit board 16 carries out the process such as filtering, amplification, data acquisition by interlock circuit, obtain the relation between time-domain and frequency-domain by Fourier transform, draw the particle quantity of different-grain diameter in the equivalent grain size of particle and unit volume subsequently through series of complex algorithm.
Refer to Fig. 4, in the present embodiment, housing 12 comprises upper shell 122 and lower house 124, and upper shell 122 coordinates with circuit board 16 and is formed with cavity 18, and upper shell 122 is formed with air intake opening 120, and air intake opening 120 is positioned at directly over cavity 18.
So, the air-flow with dust granules enters in cavity 18 from air intake opening 120.Housing 12 is divided into upper shell 122 and lower house 124, and structure is simple, easy for installation, and is convenient to detachable maintaining.
Refer to Fig. 1 and Fig. 4, in the present embodiment, circuit board 16 is formed with the airflow hole 160 aiming at air intake opening 120.
So, the air-flow in cavity 18 is entered in lower house 124 by airflow hole 160.
Refer to Fig. 5, in the present embodiment, lower house 124 coordinates with circuit board 16 and is formed with gas channel 20.
So, flowed in gas channel 20 by the air-flow of airflow hole 160.
Refer to Fig. 6 and Fig. 7, in the present embodiment, lower house 124 is provided with generating laser 14, and gas channel 20 aimed at by generating laser 14.
So, generating laser 14 Emission Lasers, when flowing through the air-flow of gas channel 20 through the front of generating laser 14, the dust granules in air-flow is by laser light scattering.
In the present embodiment, generating laser 14 is fixed on fixture 22, and fixture 22 is located in lower house 124.
So, generating laser 14 is fixed on the fixture 22 in lower house 124.
Refer to Fig. 8, in the present embodiment, be provided with air extractor 24 in housing 12, air extractor 24 is located between upper shell 122 and lower house 124 and air extractor 24 is arranged at the endpiece 200 of gas channel 20, and air extractor 24 for bleeding outside housing 12.Namely air extractor 24 discharges housing 12 for making the air-flow flowing through gas channel 20 from endpiece 200.
So, air extractor 24 is bled outside housing 12, and air-flow enters in housing 12 from air intake opening 120, flows through gas channel 20 and discharges housing 12 from endpiece 200.
In the present embodiment, air extractor 24 can be fan.
So, adopt fan production cost low, structure is simple.
In the present embodiment, circuit board 16 is provided with receiver, and receiver is used for receiving optical signals and light signal is converted to electric signal.
So, can realize measuring dust granules.
Refer to Fig. 9 and Figure 10, in the present embodiment, upper shell 122 and lower house 124 are wrapped up by U-shaped handware 26, and handware 26 is formed with the through hole 260 be communicated with air intake opening 120.
So, undertaken shielding by handware 26, anti-tampering, protection laser dust sensor 10, laser dust sensor 10 is detected without interruption, measure accurately and not fragile.Handware 26 forms through hole 260 and ensures that air flow energy enters in housing 12 from air intake opening 120.
Particularly, upper shell 122 and lower house 124 rectangular, upper shell 122 coordinates with circuit board 16 and is formed with rectangular cavities 18, cavity 18 is relatively airtight, air-flow enters cavity 18 by the air intake opening 120 of upper shell 122, then is entered in the gas channel 20 of lower house 124 by the airflow hole 160 of circuit board 16.Upper shell 122 and lower house 124 separate by circuit board 16.Air-flow flows in gas channel 20, and direction as shown in Figure 5.Generating laser 14 is fixed on fixture 22, generating laser 14 and fixture 22 are fixedly connected with on the board 16, and generating laser 14 and fixture 22 are arranged at the laser region 28 that all gas channels 20 surround, and gas channel 20 aimed at by generating laser 14, laser region 28 is communicated with gas channel 20.Fixture 22 adopts plastic cement to make, and the endpiece 200 of gas channel 20 is located at by air extractor 24, and air extractor 24 is for outwards bleeding.The U-shaped structure of handware 26 and being enclosed within upper shell 122 and lower house 124 with in case laser dust sensor 10 is interfered.Handware 26 offers rectangular through-hole that size, shape and air intake opening 120 match with.Generating laser 14 is provided with receiver at a distance of the circuit board 16 of certain position, generating laser 14 Emission Lasers, air-flow is through the front of generating laser 14, particle in air-flow is by laser light scattering, receiver receives different light signals, subsequently light signal is converted to electric signal, then processes the detection of the particle in paired air-flow through amplification, filtering etc., the detection to dust in air concentration can be realized.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " exemplary embodiment ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and aim, scope of the present utility model is by claim and equivalents thereof.
Claims (10)
1. a laser dust sensor, is characterized in that, comprising:
Housing, described housing is provided with air intake opening, is provided with the U-shaped gas channel be communicated with described air intake opening in described housing;
Generating laser, described generating laser is contained in described housing, irradiates the air-flow through described gas channel for Emission Lasers;
Be contained in the circuit board in described housing; And
Be arranged at the photodetector on described circuit board, described photodetector can receive described laser and irradiates the particle in described air-flow and reflect the light signal of generation and produce corresponding electric signal, described circuit board also for the treatment of described electric signal to obtain size and the concentration of the particle of described air-flow.
2. laser dust sensor according to claim 1, it is characterized in that, described housing comprises upper shell and lower house, and described upper shell coordinates with described circuit board and is formed with cavity, described upper shell is formed with described air intake opening, and described air intake opening is positioned at directly over described cavity.
3. laser dust sensor according to claim 2, is characterized in that, described circuit board is formed with the airflow hole aiming at described air intake opening.
4. laser dust sensor according to claim 3, is characterized in that, described lower house coordinates with described circuit board and is formed with described gas channel.
5. laser dust sensor according to claim 4, is characterized in that, described lower house is provided with described generating laser, and described gas channel aimed at by described generating laser.
6. laser dust sensor according to claim 5, is characterized in that, described generating laser is fixed on fixture, and described fixture is located in lower house.
7. laser dust sensor according to claim 5, it is characterized in that, air extractor is provided with in described housing, described air extractor is located between described upper shell and described lower house and described air extractor is arranged at the endpiece of described gas channel, and described air extractor is used for bleeding outside described housing.
8. laser dust sensor according to claim 7, is characterized in that, described air extractor is fan.
9. laser dust sensor according to claim 1, is characterized in that, described circuit board is provided with receiver, and described receiver is for receiving described light signal and described light signal being converted to electric signal.
10. laser dust sensor according to claim 5, is characterized in that, described upper shell and described lower house are wrapped up by U-shaped handware, and described handware is formed with the through hole be communicated with described air intake opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520017278.XU CN204514761U (en) | 2015-01-09 | 2015-01-09 | Laser dust sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520017278.XU CN204514761U (en) | 2015-01-09 | 2015-01-09 | Laser dust sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204514761U true CN204514761U (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520017278.XU Expired - Fee Related CN204514761U (en) | 2015-01-09 | 2015-01-09 | Laser dust sensor |
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| Country | Link |
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| CN (1) | CN204514761U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135638A (en) * | 2015-09-18 | 2015-12-09 | 广州金田瑞麟净化设备制造有限公司 | Indoor air monitoring processor with PM2.5 detection function |
| CN105572008A (en) * | 2016-03-03 | 2016-05-11 | 张银虎 | Laser dust sensor |
| WO2018165937A1 (en) * | 2017-03-16 | 2018-09-20 | 深圳市大疆创新科技有限公司 | Distance-measuring sensor and plant protection unmanned aerial vehicle having distance-measuring sensor |
-
2015
- 2015-01-09 CN CN201520017278.XU patent/CN204514761U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135638A (en) * | 2015-09-18 | 2015-12-09 | 广州金田瑞麟净化设备制造有限公司 | Indoor air monitoring processor with PM2.5 detection function |
| CN105572008A (en) * | 2016-03-03 | 2016-05-11 | 张银虎 | Laser dust sensor |
| WO2018165937A1 (en) * | 2017-03-16 | 2018-09-20 | 深圳市大疆创新科技有限公司 | Distance-measuring sensor and plant protection unmanned aerial vehicle having distance-measuring sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190816 Address after: 100089 Block 3 3558, Block C, 116 Zizhuyuan Road, Haidian District, Beijing Patentee after: West Environmental Limited by Share Ltd. Address before: 518049 Hongan Garden, Xiameilin, Futian District, Shenzhen City, Guangdong Province Patentee before: Zhao Lei |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20220109 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |