CN205449796U - Dust sensor - Google Patents
Dust sensor Download PDFInfo
- Publication number
- CN205449796U CN205449796U CN201521100790.7U CN201521100790U CN205449796U CN 205449796 U CN205449796 U CN 205449796U CN 201521100790 U CN201521100790 U CN 201521100790U CN 205449796 U CN205449796 U CN 205449796U
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- Prior art keywords
- carriage
- dust
- dust sensor
- laser
- lens
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Abstract
The utility model provides a dust sensor, it includes: go up the housing, be used for installing the carriage of measuring circuit and laser beam subassembly, have dust measuring chamber in the carriage, the laser beam subassembly, including laser instrument, one or two lens and extinction optics spare, laser instrument and extinction optics spare are installed relatively on the carriage, one or two lens are located just be positioned in the dust measuring chamber the laser of laser instrument jets out the place ahead of end, the measuring circuit, including signal reception circuit and the processing circuit who links to each other, signal reception circuit and reflector fixed connection, just the reflector is located in the carriage, processing circuit is located the bottom of carriage, lower housing, the top of carriage is located to the upper shield cap, and the bottom of carriage is located to lower housing cover, and it is whole to go up housing, carriage and the continuous component of lower housing. The utility model discloses a reflector absorbs the detection precision that the dust reverberation has improved dust sensor.
Description
Technical field
This utility model relates to dust in air detection field, particularly relates to a kind of dust sensor.
Background technology
Dust sensor is the sensor device optically measuring the micro particles characteristic being suspended in gas phase media or liquid phase medium, has the feature such as optical measuring technique non-contact measurement, not disturbance measurand.The operation principle of dust sensor is: microgranule and molecule can produce scattering of light phenomenon under the irradiation of light, meanwhile, also absorb the energy of partial illumination light.When a branch of collimated monochromatic ligth incides tested particle field, can be affected by scattering around granule and absorbing, light good general be attenuated.The most just the incident illumination relative attenuation rate by concentration field to be measured can be tried to achieve.And the size of relative attenuation rate substantially can the relative concentration of linear response field to be measured dust.The size of light intensity and being directly proportional through the signal of telecommunication power of opto-electronic conversion, just can be in the hope of relative attenuation rate by recording the signal of telecommunication.Dust sensor is widely used in the fields such as aeromerric moasurenont, fire, flue gas measurement and Industrial Boiler, kiln, chemical plant smoke evacuation measurement.
Dust sensor used in the products such as current air purifier, air-conditioning, humidifier, dehumidifier, is that the one with Japanese Sharp as representative produces reflection by optical illumination dust float, is then differentiated the concentration of dust by the degree of strength of reflection light.This dust sensor can detect the powder dust particle of more than 1 micron, it is impossible to measures the powder dust particle of less than 1 micron.
Less than 1 micron powder dust particle and the high dust sensor of accuracy of detection can be detected accordingly, it would be desirable to a kind of.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of dust sensor, for solving the problem that in prior art, dust sensor precision is the highest.
For achieving the above object and other relevant purposes, this utility model provides a kind of dust sensor, described dust sensor includes: upper encloser, upper encloser is provided with the first air vent, and the lower section of upper encloser is provided with the first shading piece blocking described first disposed at air vent illumination, the first shading piece has the through hole flow through for air；
For installing measuring circuit and the carriage of laser optical path assembly, there is in carriage dust and measure chamber；
Laser optical path assembly, including laser instrument, one or two lens and extinction optical part, described laser instrument and extinction optical part are mounted opposite on described carriage, and all lens are respectively positioned on described dust and measure intracavity and be positioned the front of laser ejecting end of described laser instrument；
Measuring circuit, including the signal receiving circuit being connected and signal processing circuit, signal receiving circuit is fixing with illuminator to be connected, and described illuminator is positioned at described carriage, and signal processing circuit is positioned at the bottom of carriage；
Lower encioser, lower encioser is provided with the second air vent, and lower encioser be arranged over blocking the second shading piece of described second disposed at air vent illumination, the second shading piece has the through hole flow through for air；Described upper encloser is covered on the top of carriage, and lower encioser covers at the bottom of carriage, and upper encloser, carriage are connected with lower encioser and constitute entirety.
Preferably, described lens are fixed seat by lens and are fixed on described carriage.
Preferably, the delustring face of described extinction optical part is coned face.
Preferably, described illuminator is arc-shaped concave mirror.
As mentioned above, dust sensor of the present utility model, have the advantages that and make air circulate along the longitudinal direction of carriage, utilize laser instrument to measure intracavity to dust by laser optical path assembly and launch laser, laser irradiates on aerial dust, and then dust can reflect light, is collected the optical signal of dust reflection by illuminator, and amplify the dust reflected light signal entering measuring circuit, improve the accuracy of detection of dust sensor.
Accompanying drawing explanation
Fig. 1 is shown as dust sensor schematic diagram of the present utility model.
Element numbers explanation
1 upper encloser
2 first shading pieces
3 extinction optical parts
4 illuminators
5 signal receiving circuits
6 carriages
7 signal processing circuits
8 second shading pieces
9 lower enciosers
10 laser instrument
11 lens
Seat fixed by 12 lens
Detailed description of the invention
By particular specific embodiment, embodiment of the present utility model being described below, those skilled in the art can be understood other advantages of the present utility model and effect easily by the content disclosed by this specification.
Refer to Fig. 1.Notice, structure depicted in this specification institute accompanying drawings, ratio, size etc., the most only in order to coordinate the content disclosed in description, understand for those skilled in the art and read, it is not limited to the enforceable qualifications of this utility model, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, under not affecting effect that this utility model can be generated by and the purpose that can reach, all should still fall in the range of the technology contents disclosed in this utility model can be contained.Simultaneously, in this specification cited as " on ", D score, "left", "right", the term of " middle " and " " etc., it is merely convenient to understanding of narration, and it is not used to limit the enforceable scope of this utility model, being altered or modified of its relativeness, changing under technology contents without essence, when being also considered as the enforceable category of this utility model.
As it is shown in figure 1, this utility model provides a kind of described dust sensor, comprising:
Upper encloser 1, upper encloser 1 is provided with the first air vent 13, and the lower section of upper encloser 1 is provided with and blocks the first shading piece 2 of illumination at described first air vent 13, and the first shading piece 2 has the through hole flow through for air；
For installing the carriage 6 of measuring circuit and laser optical path assembly, there is in carriage 6 dust and measure chamber；
Laser optical path assembly, including laser instrument 10, one or two lens 11 and extinction optical part 3, described laser instrument 10 and extinction optical part 3 are mounted opposite on described carriage 6, and all lens 11 are respectively positioned on described dust and measure intracavity and be positioned the front of laser ejecting end of described laser instrument 10；
Measuring circuit, including the signal receiving circuit 5 being connected and signal processing circuit 7, signal receiving circuit 5 is fixing with illuminator 4 to be connected, and described illuminator 4 is positioned at described carriage 6, and signal processing circuit 7 is positioned at the bottom of carriage 6；
Lower encioser 9, lower encioser 9 is provided with the second air vent, and lower encioser 9 be arranged over blocking the second shading piece 8 of described second disposed at air vent illumination, the second shading piece 8 has the through hole flow through for air；Described upper encloser 1 is covered on the top of carriage 6, and lower encioser 9 covers at the bottom of carriage 6, and upper encloser 1, carriage 6 are connected with lower encioser 9 and constitute entirety.
The present invention makes air circulate along the longitudinal direction of carriage, utilize laser instrument to measure intracavity to dust by laser optical path assembly and launch laser, laser irradiates on aerial dust, then dust can reflect light, the optical signal of dust reflection is collected by illuminator, and amplify the dust reflected light signal entering measuring circuit, improve the accuracy of detection of dust sensor.
All lens 11 in the present embodiment are all fixed seat 12 by lens and are fixed on carriage 2.
The delustring face of the extinction optical part 3 in the present embodiment is coned face.Its absorption laser forward reflection light of extinction optical part in the present embodiment, the extinction optical part 3 in the present embodiment is that delustring spiral shell is bored.
Illuminator 4 in the present embodiment is arc-shaped concave mirror, being mainly designed to collect granule reflection light of illuminator, and amplifies the granule reflected light signal entering measuring circuit, improves signal sensitivity.
For adapting to install above-mentioned each assembly, each side of above-mentioned carriage 6 all adapts to the structure of each assembly self and designs, and after being assembled on carriage by each assembly, with carriage, upper encloser, lower encioser is being assembled into entirety, and the above-mentioned dust forming sealing measures chamber.
In sum, this utility model dust sensor, air is made to circulate along the longitudinal direction of carriage, utilize laser instrument to measure intracavity to dust by laser optical path assembly and launch laser, laser irradiates on aerial dust, and then dust can reflect light, is collected the optical signal of dust reflection by illuminator, and amplify the dust reflected light signal entering measuring circuit, improve the accuracy of detection of dust sensor.So, this utility model effectively overcomes various shortcoming of the prior art and has high industrial utilization.
Above-described embodiment only illustrative principle of the present utility model and effect thereof, not for limiting this utility model.Above-described embodiment all can be modified under spirit and the scope of the present utility model or change by any person skilled in the art.Therefore, art has all equivalence modification or changes that usually intellectual is completed under without departing from the spirit disclosed in this utility model and technological thought such as, must be contained by claim of the present utility model.
Claims (4)
1. a dust sensor, it is characterised in that described dust sensor includes:
Upper encloser (1), upper encloser (1) is provided with the first air vent (13), and the lower section of upper encloser (1) is provided with the first shading piece (2) blocking described first disposed at air vent illumination, the first shading piece (2) has the through hole flow through for air；
For installing the carriage (6) of measuring circuit and laser optical path assembly, there is in carriage dust and measure chamber；
Laser optical path assembly, including laser instrument (10), one or two lens (11) and extinction optical part (3), described laser instrument (10) and extinction optical part (3) are mounted opposite on described carriage (6), and all lens (11) are respectively positioned on described dust and measure intracavity and be positioned the front of laser ejecting end of described laser instrument (10)；
Measuring circuit, including the signal receiving circuit (5) being connected and signal processing circuit (7), signal receiving circuit (5) is fixing with illuminator (4) to be connected, and described illuminator (4) is positioned at described carriage (6), signal processing circuit (7) is positioned at the bottom of carriage (6)；
Lower encioser (9), lower encioser is provided with the second air vent, and lower encioser (9) be arranged over blocking second shading piece (8) of described second disposed at air vent illumination, the second shading piece (8) has the through hole flow through for air；Described upper encloser (1) is covered on the top of carriage (6), lower encioser (9) covers at the bottom of carriage (6), and upper encloser (1), carriage (6) are connected with lower encioser (9) and constitute entirety.
Dust sensor the most according to claim 1, it is characterised in that: described lens (11) are fixed seat (12) by lens and are fixed on described carriage (6).
Dust sensor the most according to claim 1, it is characterised in that: the delustring face of described extinction optical part (3) is coned face.
Dust sensor the most according to claim 1, it is characterised in that: described illuminator (4) is arc-shaped concave mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521100790.7U CN205449796U (en) | 2015-12-25 | 2015-12-25 | Dust sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521100790.7U CN205449796U (en) | 2015-12-25 | 2015-12-25 | Dust sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205449796U true CN205449796U (en) | 2016-08-10 |
Family
ID=56579713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521100790.7U Expired - Fee Related CN205449796U (en) | 2015-12-25 | 2015-12-25 | Dust sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205449796U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872325A (en) * | 2017-03-24 | 2017-06-20 | 北京绿刻度科技有限公司 | A kind of dust sensor |
| CN117269080A (en) * | 2023-09-20 | 2023-12-22 | 秦皇岛卓安科技有限公司 | Organic matter detects laser sensor |
-
2015
- 2015-12-25 CN CN201521100790.7U patent/CN205449796U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872325A (en) * | 2017-03-24 | 2017-06-20 | 北京绿刻度科技有限公司 | A kind of dust sensor |
| CN117269080A (en) * | 2023-09-20 | 2023-12-22 | 秦皇岛卓安科技有限公司 | Organic matter detects laser sensor |
| CN117269080B (en) * | 2023-09-20 | 2024-04-05 | 秦皇岛卓安科技有限公司 | Organic matter detects laser sensor |
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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 |
Granted publication date: 20160810 Termination date: 20181225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |