CN109283106A - A kind of photoelectric conversion device for powder concentration measurement - Google Patents
A kind of photoelectric conversion device for powder concentration measurement Download PDFInfo
- Publication number
- CN109283106A CN109283106A CN201810883376.XA CN201810883376A CN109283106A CN 109283106 A CN109283106 A CN 109283106A CN 201810883376 A CN201810883376 A CN 201810883376A CN 109283106 A CN109283106 A CN 109283106A
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- laser
- photoreceptor
- dust
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- 238000005259 measurement Methods 0.000 title claims abstract description 26
- 239000000843 powder Substances 0.000 title claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 18
- 239000000428 dust Substances 0.000 claims abstract description 56
- 108091008695 photoreceptors Proteins 0.000 claims abstract description 55
- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 238000012360 testing method Methods 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 230000003321 amplification Effects 0.000 claims 1
- 238000007689 inspection Methods 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 230000003287 optical effect Effects 0.000 abstract description 7
- 238000000149 argon plasma sintering Methods 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000002356 laser light scattering Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0656—Investigating concentration of particle suspensions using electric, e.g. electrostatic methods or magnetic methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/075—Investigating concentration of particle suspensions by optical means
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of photoelectric conversion device for powder concentration measurement, including main body, laser, transmission photoreceptor and scattering photoreceptor, dust sensing chamber is provided in main body；Dust sensing chamber is connected with the sense channel of the incidence channel of laser, the sense channel of transmission photoreceptor and scattering photoreceptor respectively；Dust sensing chamber is also connected with the inlet channel and outlet passageway of under test gas；The shoot laser of laser injects dust detection interior, and transmitted light reaches transmission photoreceptor, and scattering light, which reaches, scatters photoreceptor；Transmission photoreceptor and the output signal for scattering photoreceptor are connected to amplifying circuit.The present invention using optical transmission method principle and light scattering method principle it is designed in conjunction can continuous, real-time display concentration value measuring device.
Description
Technical field
The invention belongs to dust measurement technical fields, are related to powder concentration measurement, especially a kind of to survey for dust concentration
The photoelectric conversion device of amount.
Background technique
In the prior art, for the measurement of dust concentration, be mainly the following mode: one is filter membrane dust measurings, specifically
Operation is by the dust laden air of certain volume, and by sampling head, all powder dust particle of different sizes is detained to be clipped in sampling
Filter membrane surface in head calculates the dust concentration in air according to the weight gain of filter membrane and by the volume of air of sampling head.This
Kind mode is not only not easy to operate, but also cannot continuously measure；Another kind is dust measurement instrument of direct-reading type, mainly such as using indirect method
The principles such as incandescent lamp transmission, infrared light light transmission, light scattering, laser light scattering, β attenuation sensors, are demarcated using sampler, can
Instant playback goes out the dust concentration value measured and comes.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of photoelectricity for powder concentration measurement is provided
Conversion equipment, be using optical transmission method principle and light scattering method principle it is designed in conjunction can continuous, real-time display concentration value
Measuring device.
The purpose of the present invention is achieved through the following technical solutions:
This photoelectric conversion device for powder concentration measurement, including main body, laser, transmission photoreceptor and scattering
Photoreceptor is provided with dust sensing chamber in the main body；The dust sensing chamber is felt with the incidence channel of laser, transmission respectively
The sense channel of light device and the sense channel for scattering photoreceptor are connected；The dust sensing chamber is also connected under test gas
Inlet channel and outlet passageway；The shoot laser of the laser injects dust detection interior, across the transmitted light of under test gas
Transmission photoreceptor is reached, the scattering light scattered through dust under test gas reaches scattering photoreceptor；The transmission photoreceptor and dissipate
The output signal for penetrating photoreceptor is connected to amplifying circuit.
Further, the incidence channel of above-mentioned laser is nearby provided with lens, the laser in the laser emitting of laser
The shoot laser of device reaches the dust by incidence channel after lens and detects interior.
Further, the incidence channel of above-mentioned laser is also communicated with a protection inlet channel, the protection inlet channel
Inlet end is provided with dust-filtering film.
Further, the emergent light side of lens is arranged in above-mentioned protection inlet channel.
Further, above-mentioned dust sensing chamber is a setting in the intracorporal cavity of master；It is provided with air inlet pipe on the body
The inlet channel and outlet passageway of hole and outlet pore respectively as under test gas；Protection tracheal orifice is offered in main body as guarantor
Protect inlet channel；Laser fixing seat mounting hole, photoreceptor hole are additionally provided in main body；Institute's air inlet pipe hole, protection tracheal orifice and
Air inlet pipe, protection air inlet pipe and an air outlet pipe are separately installed in outlet pore；Dust mistake is housed in the external port of protection air inlet pipe
Filter membrane；Laser is mounted in laser fixing seat, and laser fixing seat is fixed on the installation of the laser fixing seat on the right side of main body
Kong Zhong；Lens are installed in front of laser fixing seat；It scatters photosensitive on 45 ° of directions of laser in photoreceptor mounting body
In device hole；Transmission photoreceptor be mounted in main body in the photoreceptor hole in laser relative direction.
Further, the output signal of above-mentioned amplifying circuit is connected with dust concentration analysis circuit.
Further, above-mentioned dust sensing chamber is a setting in the intracorporal cylindrical cavity of master.
Further, aforementioned body is a rectangular parallelepiped structure.
Further, above-mentioned laser, transmit photoreceptor line intersect with the line of air inlet pipe, escape pipe to dust detection
Room.
The invention has the following advantages:
The present invention is a kind of using optical transmission method principle and light scattering method for the photoelectric conversion device of powder concentration measurement
Principle it is designed in conjunction can continuous, real-time display concentration value measuring device.It is by combining optical signal transmissive and scattering light
Signal further increases the measurement accuracy of dust, and can synchronize and clean to optical system, from later period people
The device of work maintenance.
Further, compared with the existing technology in for powder concentration measurement photoelectric conversion device in only acquisition scattering
Optical signal, and without protecting system using the cleaning before laser, present invention employs the sides that transmitted light is combined with scattering light
Formula, can make that measurement result is more accurate, precision is higher；The air inlet protective device that the present invention designs can be exempted from after in device
In the deficiency of manual cleaning, the high-precision of measurement result is more maintained.
In conclusion the present invention can make dust measurement device cost lower, volume is smaller, and measurement accuracy is higher, and
Simple production process is easy to large-scale production and application popularization.
Detailed description of the invention
Fig. 1 is schematic cross-section of the invention；
Fig. 2 is another schematic cross-section of the invention.
Wherein: 1. air inlet pipe, 2. protection air inlet pipe, 3. laser fixing seats, 4. lasers, 5. lens, 6. scatterings are photosensitive
Device, 7. main bodys, 8, escape pipe, 9. dust sensing chamber, 10. transmission photoreceptors, 11. amplifying circuits, 12. dust-filtering films.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
The present invention be used for powder concentration measurement photoelectric conversion device, including main body 7, laser 4, transmission photoreceptor 10 with
And photoreceptor 6 is scattered, dust sensing chamber 9 is provided in main body 7；Dust sensing chamber 9 respectively with the incidence channel of laser 4, thoroughly
The sense channel for penetrating photoreceptor 10 and the sense channel for scattering photoreceptor 6 are connected；Dust sensing chamber 9 is also connected with gas to be measured
The inlet channel and outlet passageway of body；The shoot laser of laser 4 is injected in dust sensing chamber 9, across the transmission of under test gas
Light reaches transmission photoreceptor 10, and the scattering light scattered through dust under test gas reaches scattering photoreceptor 6；Transmit 10 He of photoreceptor
The output signal of scattering photoreceptor 6 is connected to amplifying circuit 11.The incidence channel of laser 4 is attached in the laser emitting of laser 4
Lens 5 are closely provided with, the shoot laser of the laser 4 reaches the dust sensing chamber 9 by incidence channel after lens 5
It is interior.The incidence channel of laser 4 is also communicated with a protection inlet channel, and the inlet end of inlet channel is protected to be provided with dust-filtering
Film 12.The emergent light side of lens 5 is arranged in protection inlet channel.
The specific embodiment of the invention is described in further details below by way of Fig. 1 and Fig. 2:
As shown in Figure 1, main body 7 of the invention is a rectangular parallelepiped structure, dust sensing chamber 9 is a setting in main body 7
Cylindrical cavity.Air inlet pipe hole and outlet pore are provided in main body 7 respectively as the inlet channel and outlet of under test gas
Channel；Protection tracheal orifice is offered in main body 7 as protection inlet channel；The installation of laser fixing seat is additionally provided in main body 7
Hole, photoreceptor hole；Air inlet pipe 1, protection 2 and of air inlet pipe are separately installed in institute's air inlet pipe hole, protection tracheal orifice and outlet pore
Escape pipe 8；Dust-filtering film 12 is housed in the external port of protection air inlet pipe 2；Laser 4 is mounted in laser fixing seat 3, is swashed
Light device fixing seat 3 is fixed in the laser fixing seat mounting hole on 7 right side of main body；Lens are installed in front of laser fixing seat 3
5；Scatter 6 mounting body 7 of photoreceptor in the photoreceptor hole on 45 degree of directions of laser 4；Transmit photoreceptor 10
Be mounted in main body 7 in the photoreceptor hole in 4 relative direction of laser.Laser 4, transmit photoreceptor 6 line with into
Tracheae 1, escape pipe 8 line intersect to dust sensing chamber 9.The output signal of amplifying circuit 11 is connected with dust concentration analysis electricity
Road.
The course of work of the invention is as follows:
When dust laden air to be measured enters from air inlet pipe 1, by dust sensing chamber 9, from the discharge of escape pipe 8；Dust laden air
Become pure air after dust-filtering film 12, pure air enters protection air inlet pipe 2, cleaning work is carried out in front of lens 5
With.Laser 4 emits laser and passes through lens 5, by dust sensing chamber 9, reaches transmission photoreceptor 10.When light is in dust sensing chamber
9 when being irradiated to the dust particles in dust laden air, can be by dust absorbing and scattering, transmission, and transmitted light enters transmission photoreceptor
In 10, and a part scattering light can enter in transmission photoreceptor 10, some scattering light can enter scattering photoreceptor 6
In, the optical signal that transmiting photoreceptor 10 and scattering photoreceptor 6 will test is converted into electric signal transmission into amplifying circuit 11.Two
The dust concentration of dust laden air can be obtained in incoming analysis circuit after road signal is aggregated.
Claims (9)
1. a kind of photoelectric conversion device for powder concentration measurement, which is characterized in that including main body (7), laser (4), thoroughly
Photoreceptor (10) and scattering photoreceptor (6) are penetrated, is provided with dust sensing chamber (9) in the main body (7)；The dust sensing chamber
(9) detection with the incidence channel of laser (4), the sense channel of transmission photoreceptor (10) and scattering photoreceptor (6) respectively
Channel is connected；The dust sensing chamber (9) is also connected with the inlet channel and outlet passageway of under test gas；The laser
(4) shoot laser is injected in dust sensing chamber (9), and the transmitted light across under test gas reaches transmission photoreceptor (10), through to
The scattering light for surveying dust scattering in gas reaches scattering photoreceptor (6)；It is described to transmit photoreceptor (10) and scatter photoreceptor (6)
Output signal is connected to amplifying circuit (11).
2. the photoelectric conversion device according to claim 1 for powder concentration measurement, which is characterized in that the laser
(4) incidence channel is nearby provided with lens (5) in the laser emitting of laser (4), and the shoot laser of the laser (4) is worn
It is reached in the dust sensing chamber (9) after crossing lens (5) by incidence channel.
3. the photoelectric conversion device according to claim 2 for powder concentration measurement, which is characterized in that the laser
(4) incidence channel is also communicated with a protection inlet channel, and the inlet end of the protection inlet channel is provided with dust-filtering film
(12)。
4. the photoelectric conversion device according to claim 3 for powder concentration measurement, which is characterized in that it is described protect into
Gas channel is arranged in the emergent light side of lens (5).
5. the photoelectric conversion device according to any one of claims 1-4 for powder concentration measurement, which is characterized in that
The dust sensing chamber (9) is a cavity being arranged in main body (7)；Air inlet pipe hole and outlet are provided on the main body (7)
Inlet channel and outlet passageway of the pore respectively as under test gas；Offered in main body (7) protection tracheal orifice as protect into
Gas channel；Laser fixing seat mounting hole, photoreceptor hole are additionally provided in main body (7)；The air inlet pipe hole, protection tracheal orifice and
Air inlet pipe (1), protection air inlet pipe (2) and escape pipe (8) are separately installed in outlet pore；In the outer end of protection air inlet pipe (2)
Mouth is equipped with dust-filtering film (12)；Laser (4) is mounted on laser fixing seat (3), and laser fixing seat (3) is fixed on master
In laser fixing seat mounting hole on the right side of body (7)；Lens (5) are installed in front of laser fixing seat (3)；Scatter photoreceptor
(6) in mounting body (7) in the photoreceptor hole on (4) 45 ° of directions of laser；Transmission photoreceptor (10) is mounted on main body
(7) on in the photoreceptor hole in laser (4) relative direction.
6. the photoelectric conversion device according to claim 5 for powder concentration measurement, which is characterized in that the amplification electricity
The output signal on road (11) is connected with dust concentration analysis circuit.
7. the photoelectric conversion device according to claim 5 for powder concentration measurement, which is characterized in that the dust inspection
Surveying room (9) is a cylindrical cavity being arranged in main body (7).
8. the photoelectric conversion device according to claim 5 for powder concentration measurement, which is characterized in that the main body
It (7) is a rectangular parallelepiped structure.
9. the photoelectric conversion device according to claim 5 for powder concentration measurement, which is characterized in that the laser
(4), the line for transmiting photoreceptor (10) intersects with the line of air inlet pipe (1), escape pipe (8) to dust sensing chamber (9).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018105257335 | 2018-05-28 | ||
| CN201810525733 | 2018-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109283106A true CN109283106A (en) | 2019-01-29 |
Family
ID=65182957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810883376.XA Pending CN109283106A (en) | 2018-05-28 | 2018-08-06 | A kind of photoelectric conversion device for powder concentration measurement |
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| CN (1) | CN109283106A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813642A (en) * | 2019-03-18 | 2019-05-28 | 重庆工程职业技术学院 | A kind of dust control device |
| CN110595971A (en) * | 2019-10-16 | 2019-12-20 | 恒天益科技（深圳）有限公司 | Ultra-low dust meter |
| CN111220576A (en) * | 2020-01-17 | 2020-06-02 | 中煤科工集团重庆研究院有限公司 | Laser self-checking type dust concentration detection device and self-checking method thereof |
| CN111220577A (en) * | 2020-01-17 | 2020-06-02 | 中煤科工集团重庆研究院有限公司 | Gas circuit protection type laser dust concentration detection device and self-detection method thereof |
| CN112067516A (en) * | 2020-08-06 | 2020-12-11 | 国度人工智能科技有限公司 | Intelligent video sensor for dust concentration and dust concentration detection method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813642A (en) * | 2019-03-18 | 2019-05-28 | 重庆工程职业技术学院 | A kind of dust control device |
| CN110595971A (en) * | 2019-10-16 | 2019-12-20 | 恒天益科技（深圳）有限公司 | Ultra-low dust meter |
| CN111220576A (en) * | 2020-01-17 | 2020-06-02 | 中煤科工集团重庆研究院有限公司 | Laser self-checking type dust concentration detection device and self-checking method thereof |
| CN111220577A (en) * | 2020-01-17 | 2020-06-02 | 中煤科工集团重庆研究院有限公司 | Gas circuit protection type laser dust concentration detection device and self-detection method thereof |
| CN111220577B (en) * | 2020-01-17 | 2022-08-02 | 中煤科工集团重庆研究院有限公司 | Gas circuit protection type laser dust concentration detection device and self-detection method thereof |
| CN112067516A (en) * | 2020-08-06 | 2020-12-11 | 国度人工智能科技有限公司 | Intelligent video sensor for dust concentration and dust concentration detection method |
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