CN206362670U - A kind of laser dust sensor - Google Patents
A kind of laser dust sensor Download PDFInfo
- Publication number
- CN206362670U CN206362670U CN201621355455.6U CN201621355455U CN206362670U CN 206362670 U CN206362670 U CN 206362670U CN 201621355455 U CN201621355455 U CN 201621355455U CN 206362670 U CN206362670 U CN 206362670U
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- China
- Prior art keywords
- laser
- fixture
- lower house
- circuit board
- laser module
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Abstract
The utility model provides a kind of laser dust sensor, including the optical system being made up of laser module, photo-sensitive cell, optical dark room；The ventilating system being made up of fan, ventilating opening, U-shaped gas channel；The laser launched using single-chip microcomputer as the data handling system of core, laser module, is irradiated to the dust laden air in the U-shaped gas channel in front, occurs the scattering of light；Photo-sensitive cell receives scattered light, converts optical signals into electric signal；Single-chip microcomputer gathers for the data handling system of core, processing electric signal, obtains the particle concentration and size in dust laden air.A kind of laser dust sensor that the utility model is provided, the laser launched by laser module, it is irradiated to the dust laden air in the U-shaped gas channel in front, occurs the scattering of light, photo-sensitive cell receives scattered light, electric signal is converted optical signals into, while quickly and accurately obtaining the particle concentration and size in dust laden air as the collection of the data handling system of core, processing electric signal using single-chip microcomputer.
Description
Technical field
The utility model relates to sensor field, is related specifically to a kind of laser dust sensor.
Background technology
Haze has a strong impact on healthy, and air quality is increasingly valued by people.Surveyed using traditional infrared light source
The method for measuring dust concentration, sensitivity is not high, and measurement result is not accurate enough.
Utility model content
The utility model provides a kind of laser dust sensor, for solving the sensitivity of measurement dust concentration at present not
Height, the not accurate enough technical problem of measurement result.
In order to solve the above technical problems, the utility model provides a kind of laser dust sensor, including：Upper shell 1, electricity
Road plate 2, lower house 3, fixture 4 and upper shell 1 described in laser module 5 cooperatively form a complete housing with the lower house 3；Institute
Lower house 3 is stated provided with air inlet 8, gas outlet 9 is provided with its offside；Through hole is provided with the middle of the fixture 4；The fixation
Part 4 is located in the lower house 3, so as to form a U-shaped passage 12 with the air inlet 8 and the gas outlet 9；The laser
Module 5 is fixed on the inside of the fixture 4, and the transmitting laser of laser module 5 is injected through the through hole on the fixture 4
In the U-shaped passage 12；The circuit board 2, which is located on the top of the fixture 4, the circuit board 2, is provided with photo-sensitive cell
14, positioned at the surface of the U-shaped passage 12；The single-chip microcomputer 6 of the collection and processing to signal is provided with the circuit board 2,
The side that socket 13 is located at the circuit board 2 is connected, through the upper shell 1 and a complete housing of the formation of the lower house 3；
The laser module 5 is electrically connected with the circuit board 2.
Further, in addition to fan 7, the fan 7 is arranged on the position where the gas outlet 9 in the lower house 3
Put.
Further, the fixture 4 is on the rectangle structure that top is protruded, the top projection of fixture 4
It is provided with for the photosensitive window 10 through scattering light, the photosensitive window 10 is located at the top of the U-shaped passage 12；
Further, in addition to optical dark room 11, the optical dark room 11 is located at the front of laser module 5 lower casing
In body 3, for absorbing the consumption transmitting of laser module 5 laser.
Further, the top of fixture 4 is provided with the opening 15 for placing lens.
A kind of laser dust sensor that the utility model is provided, the laser launched by laser module, before being irradiated to
Dust laden air in the U-shaped gas channel in side, occurs the scattering of light, and photo-sensitive cell receives scattered light, converts optical signals into electricity
Signal, while quickly and accurately being obtained using single-chip microcomputer as the collection of the data handling system of core, processing electric signal in dust laden air
Particle concentration and size.
Brief description of the drawings
A kind of explosive view for laser dust sensor that Fig. 1 provides for the utility model；
A kind of lower house schematic diagram for laser dust sensor that Fig. 2 provides for the utility model；
A kind of circuit board schematic diagram for laser dust sensor that Fig. 3 provides for the utility model；
A kind of installation diagram for laser dust sensor that Fig. 4 provides for the utility model；
A kind of installation diagram for laser dust sensor that Fig. 5 provides for the utility model.
Embodiment
Referring to Fig. 1-5, the utility model provides utility model and provides a kind of laser dust sensor, including：Upper casing
Body 1, circuit board 2, lower house 3, fixture 4, laser module 5 and fan 7.Upper shell 1 cooperatively forms a complete shell with lower house 3
Body.Lower house 3 is provided with air inlet 8, and gas outlet 9 is provided with its offside.Fixture 4 is provided with the rectangle knot of through hole for centre
Structure, fixture 4 is located in lower house 3, so as to form a U-shaped passage 12 with air inlet 8 and gas outlet 9；In the present embodiment
Fixture 4 is the rectangle structure that top is protruded, while being provided with the top projection of fixture 4 for passing through scattering light
Photosensitive window 10, photosensitive window 10 be located at U-shaped passage 12 top, its effect is for preventing the dust in U-shaped passage 12
Adhere on the photo-sensitive cell 14 on circuit board 2.Laser module 5 is fixed on the inside of fixture 4, while the transmitting of laser module 5 swashs
Light is injected in U-shaped passage 12 through the through hole on fixture 4；The top of fixture 4 is provided with for placing in the present embodiment
The opening 15 of lens, by being put into different lens in fixture 4, so as to adjust the irradiant focusing position of laser module 5
Put.Circuit board 2, which is located on the circuit board 2 directly over the top of fixture 4, U-shaped passage 12, is provided with photo-sensitive cell 14, mode of laser
Group 5 sends laser and injected in U-shaped passage 12, and the dust granules in U-shaped passage 12 in air-flow are by laser light scattering, and scattered light is through solid
Determine the photosensitive window 10 on part 4, received by photo-sensitive cell 14, so as to convert optical signals to electric signal.It is provided with circuit board 2
To the single-chip microcomputer 6 of collection and the processing of signal, coordinate interlock circuit to realize collection and processing to signal, pass through series of algorithms
Calculate the particle diameter and concentration of particulate matter.The side that socket 13 is located at circuit board 2 is connected, is formed through upper shell 1 and lower house 3
A complete housing, can be connected with external circuit, realize power supply to circuit board 2, and measurement result output.Mode of laser
Group 5 is electrically connected with circuit board 2, and circuit board 2 is powered to laser module 5, so as to drive laser module 5 to emit beam.Fan 7
On the position for being built in the gas outlet 9 that upper shell 1 and lower house 3 are assembled to form, to outside pumping, it is ensured that empty in U-shaped passage 12
The stabilization of throughput, so that measurement is more accurate.In the present embodiment, in addition to optical dark room 11, optical dark room 11
In in the lower house 3 of the front of laser module 5, for absorbing the consumption transmitting of laser module 5 laser, so that will not be right
Actual scattered light is impacted, and makes measurement result more accurate.
It should be noted last that, above embodiment is only to illustrate the technical solution of the utility model rather than limit
System, although the utility model is described in detail with reference to example, it will be understood by those within the art that, can be right
The technical solution of the utility model is modified or equivalent substitution, without departing from the spirit and model of technical solutions of the utility model
Enclose, it all should cover among right of the present utility model.
Claims (5)
1. a kind of laser dust sensor, it is characterised in that including：Upper shell (1), circuit board (2), lower house (3), fixture
And laser module (5) upper shell (1) and the lower house (3) cooperatively form a complete housing (4)；The lower house (3)
Air inlet (8) is provided with, gas outlet (9) are provided with its offside；Through hole is provided with the middle of the fixture (4)；The fixture
(4) it is located in the lower house (3), so as to form a U-shaped passage (12) with the air inlet (8) and the gas outlet (9)；
The laser module (5) is fixed on the inside of the fixture (4), and laser module (5) the transmitting laser passes through the fixation
Through hole on part (4) is injected in the U-shaped passage (12)；The circuit board (2) is located at the top of the fixture (4), described
Photo-sensitive cell (14) is provided with circuit board (2), positioned at the surface of the U-shaped passage (12)；Set on the circuit board (2)
There is the single-chip microcomputer (6) of the collection and processing to signal, connection socket (13) is located at the side of the circuit board 2, through on described
Housing (1) and a complete housing of the lower house (3) formation；The laser module (5) electrically connects with the circuit board (2).
2. a kind of laser dust sensor according to claim 1, it is characterised in that also including fan (7), the fan
(7) it is arranged in the lower house (3) on the position of the gas outlet (9).
3. a kind of laser dust sensor according to claim 1, it is characterised in that the fixture (4) is prominent for top
It is provided with the rectangle structure gone out, fixture (4) top projection for the photosensitive window through scattering light
(10), the photosensitive window (10) is located at the top of the U-shaped passage (12).
4. a kind of laser dust sensor according to claim 1, it is characterised in that also including optical dark room (11), institute
Optical dark room (11) is stated in front of the laser module (5) in the lower house (3), for absorbing the consumption laser module
(5) laser is launched.
5. a kind of laser dust sensor according to claim 1, it is characterised in that set at the top of the fixture (4)
Have for placing the opening of lens (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621355455.6U CN206362670U (en) | 2016-12-12 | 2016-12-12 | A kind of laser dust sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621355455.6U CN206362670U (en) | 2016-12-12 | 2016-12-12 | A kind of laser dust sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206362670U true CN206362670U (en) | 2017-07-28 |
Family
ID=59374247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621355455.6U Active CN206362670U (en) | 2016-12-12 | 2016-12-12 | A kind of laser dust sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206362670U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991210A (en) * | 2017-11-24 | 2018-05-04 | 深圳市昂茂科技有限公司 | Sensor |
| CN109580442A (en) * | 2019-01-10 | 2019-04-05 | 中煤科工集团重庆研究院有限公司 | Maintenance-free laser dust concentration sensor |
-
2016
- 2016-12-12 CN CN201621355455.6U patent/CN206362670U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991210A (en) * | 2017-11-24 | 2018-05-04 | 深圳市昂茂科技有限公司 | Sensor |
| CN109580442A (en) * | 2019-01-10 | 2019-04-05 | 中煤科工集团重庆研究院有限公司 | Maintenance-free laser dust concentration sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180202 Address after: No. 16, No. four street, Shenyang economic and Technological Development Zone, Liaoning, Liaoning Patentee after: Kodenshi Corp. Address before: No. 16, No. four street, Shenyang economic and Technological Development Zone, Liaoning, Liaoning Patentee before: Horizon semiconductor (Shenyang) Co., Ltd. |