CN111693490A - Gas telemetering device based on quantum cascade laser or interband cascade laser - Google Patents
Gas telemetering device based on quantum cascade laser or interband cascade laser Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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Abstract
The invention relates to the technical field of gas concentration detection, and provides a gas telemetering device based on a quantum cascade laser or an interband cascade laser, which comprises: the device comprises a main laser, a collimating lens, a light receiving lens, a photoelectric detector and a control circuit; the main laser adopts a quantum cascade laser or an interband cascade laser; the collimating lens is arranged at the emitting end of the main laser, laser emitted by the main laser passes through target gas after being collimated by the collimating lens, the target gas absorbs laser components with specific wavelengths in the laser, the laser irradiates the surface of an object, and part of the laser reflected by the surface of the object is absorbed again by the target gas; the light receiving lens receives the laser light which is absorbed again by the target gas and converges to the photoelectric detector, the photoelectric detector converts the received optical signal into an electric signal, and the electric signal is filtered and amplified through the control circuit and calculates the concentration of the output target gas. The invention can rapidly detect the concentration of the target gas.
Description
Technical Field
The invention relates to the technical field of gas concentration detection, in particular to a gas telemetering device based on a quantum cascade laser or an interband cascade laser.
Background
The existing gas detection technology has many detection methods, and most of the detection methods mainly adopt thermal detection methods and chemical detection methods; thermal gas sensors use the thermal conductivity of a gas to measure the concentration of one or more gas components by the change in resistance of a thermistor. The chemical gas sensor uses the electrochemical activity of a gas to be detected to oxidize or reduce the gas, and distinguishes the detection concentration of the gas from a product.
The thermal detection has the problems of low response speed and low accuracy. The biggest shortcoming of chemical formula detection is that it is difficult to carry out on-the-spot real-time detection, and in the testing process, need prepare the sample in advance, detect through the chemical mode, target gas concentration in the gaseous await measuring of unable timely reaction is difficult to satisfy the early warning demand, and above-mentioned two kinds of detection methods all can't short-term test target gas concentration.
Disclosure of Invention
The invention mainly solves the technical problem that the low-concentration (ppb level) target gas cannot be quickly detected in the industrial and environmental fields of the prior art, and provides a telemetering device for measuring the target gas in the gas to be detected based on a Quantum Cascade Laser (QCL) or an Interband Cascade Laser (ICL), which can quickly detect the concentration of the target gas, and has the advantages of high measurement precision, sensitive response, capability of immediately reflecting the concentration of the target gas in the gas to be detected and maintenance-free property.
The invention provides a gas telemetering device based on quantum cascade laser or interband cascade laser, comprising: the device comprises a main laser (1), a collimating lens (2), a light receiving lens (4), a photoelectric detector (6) and a control circuit (7);
the main laser (1) and the photoelectric detector (6) are respectively and electrically connected with a control circuit (7), and the main laser (1) adopts a quantum cascade laser or an interband cascade laser; the collimating lens (2) is arranged at the emitting end of the main laser (1), laser emitted by the main laser (1) is collimated through the collimating lens (2) and then penetrates through the target gas (13), the target gas (13) absorbs laser components with specific wavelengths in the laser, the laser irradiates the surface (3) of the object, and part of the laser reflected by the surface (3) of the object is absorbed again through the target gas (13);
the light receiving lens (4) is arranged at a receiving end of the gas remote measuring device, the light receiving lens (4) receives laser which is absorbed again by target gas (13) and converges to the photoelectric detector (6), the photoelectric detector (6) converts received optical signals into electric signals, and the electric signals are filtered and amplified through the control circuit (7) and calculate and output the concentration of the target gas (13).
Preferably, the method further comprises the following steps: the alarm device comprises a display screen (11) and an alarm module (10) electrically connected with the display screen (11);
the display screen (11) is used for displaying the concentration of the target gas and the distance between the main laser (1) and the surface (3) of the object;
and the alarm module (10) is used for giving an alarm when the detected concentration of the target gas (13) is greater than a safety value.
Preferably, the method further comprises the following steps: the distance measuring module (9) is electrically connected with the display screen (11);
the distance measurement module (9) comprises a distance measurement transmitting end and a distance measurement receiving end, the distance measurement transmitting end emits distance measurement laser, and the distance measurement laser is received by the distance measurement receiving end after being reflected by an object;
the distance measuring receiving end obtains a distance signal between the main laser (1) and the object surface (3) by using the received distance measuring laser, and sends the distance signal to the display screen (11).
Preferably, the method further comprises the following steps: an indication light laser (8) electrically connected with the control circuit (7); the indicating light laser (8) is used for indicating the space position of the laser emitted by the main laser (1).
Preferably, the method further comprises the following steps: a power supply (12) for supplying power; the power supply (12) is electrically connected with the control circuit (7).
Preferably, the surfaces of the collimating lens (2) and the light collecting lens (4) are plated with antireflection films aiming at absorption lines of target gas (13).
Preferably, the axis of the laser beam emitted by the main laser (1), the axis of the collimating lens (2) and the axis of the light collecting lens (4) form an included angle of less than 30 degrees.
Preferably, the band range of the target gas (13) detected by the gas remote measuring device is 2-12um, and the gas which is toxic, inflammable, pollutes the environment or needs to be detected by a process can be detected in the band range.
Preferably, a window sheet (5) is arranged on the receiving side of the light receiving lens (4), and the light receiving lens (4) and the window sheet (5) converge the laser light reflected by the surface of the object to the photoelectric detector (6).
Preferably, the photoelectric detector (6) adopts an HgCdTe photoelectric detector.
The invention provides a gas telemetering device based on a quantum cascade laser or an interband cascade laser.A control circuit drives a main laser to emit laser, the laser is collimated by a collimating lens and then irradiates the surface of an object through target gas, the laser generates diffuse reflection on the surface of the object, part of the laser of the diffuse reflection is converged to a photoelectric detector through the target gas by a light receiving lens and a window sheet, the photoelectric detector converts received optical signals into electric signals, and the control circuit carries out filtering amplification and calculation on the electric signals and outputs the concentration of the target gas. The invention utilizes TDLAS technology, combines target gas molecules with stronger spectral absorption peak in an infrared band, is portable in a remote measuring mode, quickly detects the concentration of low-concentration (ppb level) target gas in a space, and has important application value in the field of quick detection of trace gas in chemical industry, environment, medical treatment and the like.
Drawings
FIG. 1 is a schematic diagram of the arrangement of the components of a quantum cascade laser or interband cascade laser based gas telemetry device provided by the present invention.
Reference numerals: 1. a main laser; 2. a collimating lens; 3. a surface of the object; 4. a light-collecting lens; 5. a window sheet; 6. a photodetector; 7. a control circuit; 8. an indicator light laser; 9. a distance measurement module; 10. an alarm module; 11. a display screen; 12. a power source; 13. a target gas.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.
FIG. 1 is a schematic diagram of the arrangement of the components of a quantum cascade laser or interband cascade laser based gas telemetry device provided by the present invention. As shown in fig. 1, a gas telemetry device based on a quantum cascade laser or an interband cascade laser provided by an embodiment of the present invention includes: the device comprises a main laser 1, a collimating lens 2, a light receiving lens 4, a photoelectric detector 6 and a control circuit 7.
The main laser 1 and the photoelectric detector 6 are respectively and electrically connected with a control circuit 7, and the main laser 1 adopts a quantum cascade laser or an interband cascade laser; the collimating lens 2 is arranged at the emitting end of the main laser 1, laser emitted by the main laser 1 is collimated through the collimating lens 2 and then passes through the target gas 13, the target gas 13 absorbs laser components with specific wavelengths in the laser, the laser irradiates the object surface 3, the object surface 3 has a diffuse reflection effect on light with wavelengths near the absorption spectrum line of the target gas 13, and part of the laser reflected by the object surface 3 is absorbed again through the target gas 13.
The light receiving lens 4 is arranged at a receiving end of the gas remote measuring device, and the light receiving lens 4 receives laser light which is absorbed again by the target gas 13 and converges to the photoelectric detector 6. The window sheet 5 is selectively transparent to light within a certain range of the absorption line of the target gas 13. The photoelectric detector 6 converts the received optical signal into an electric signal, and the electric signal is filtered and amplified by the control circuit 7 to calculate an output targetThe gas 13 concentration. Specifically, the band range of the absorption spectrum line of the target gas 13 detected by the gas remote measuring device is 2-12 um; methane (CH) can be detected in this band4) Ammonia gas (HN)3) Carbon monoxide (CO) hydrogen sulfide (H)2S), formaldehyde (CH)2O), water (H)2O), carbon dioxide (CO)2) Hydrogen chloride (HCl), hydrogen bromide (HBr), nitrogen monoxide (NO), nitrogen dioxide (NO)2) Acetylene (C)2H2) Ethylene (C)2H4) Ethane (C)2H6) Sulfur dioxide (SO)2) Nitrous oxide (N2O), ozone (O3), and the like are toxic, flammable, and cause environmental pollution or require process detection. And a window sheet 5 is arranged on the receiving side of the light receiving lens 4, and the light receiving lens 4 and the window sheet 5 converge laser to the photoelectric detector 6. The photoelectric detector 6 has good response characteristic to light of a wave band near an absorption spectrum line of the target gas 13, can convert an optical signal of the wave band near the absorption spectrum line into an electric signal, and the photoelectric detector 6 preferably adopts a HgCdTe photoelectric detector and other photoelectric detectors with good corresponding characteristics to light with the wavelength of 2-12 um.
In this embodiment, the collimating lens 2 collimates the laser beam emitted by the primary laser 1, and the light collecting lens 4 collects the laser light reflected by the object surface 3 to the photodetector 6. The control circuit 7 drives the main laser 1 to work, and can receive the electric signal output by the photoelectric detector 6, filter, amplify and calculate the electric signal and output target gas concentration data. The main Laser 1 is a Quantum Cascade Laser or a band-to-band Cascade Laser, and a Quantum Cascade Laser (QCL) is a semiconductor Laser capable of emitting Laser light with a spectrum in the middle infrared and far infrared bands. The infrared spectrum gas detection technology based on the quantum cascade laser has the advantages of high sensitivity, high detection speed and the like, and particularly has remarkable advantages in the aspect of high-precision spectrum detection. An Interband Cascade Laser (ICL) is an effective full-curing mid-infrared light source, has wide application prospect, and is widely applied to the fields of communication, trace gas monitoring, electronic countermeasure, environmental monitoring and the like.
On the basis of the scheme, antireflection films aiming at the absorption lines of the target gas 13 are plated on the surfaces of the collimating lens 2 and the light collecting lens 4, so that the permeability of the absorption lines of the target gas 13 in laser is increased. The main laser 1 emits laser beam axes, the collimating lens 2 axes and the light receiving lens 4 axes, and included angles of the axes are less than 30 degrees, so that the laser beam emitted by the laser 1 can be irradiated to the object surface 3 through the collimating lens 2 and can be effectively received by the light receiving lens 4.
The gas telemetry device of the present embodiment, further comprising: the device comprises a display screen 11, an alarm module 10, an indicating light laser 8 and a power supply 12 for supplying power; the alarm module 10 is electrically connected with the display screen 11; the display screen 11 is used for displaying the concentration of the target gas and the distance between the main laser 1 and the object surface 3 and controlling the alarm module 10 to alarm; and the alarm module 10 is used for giving an alarm when the concentration of the target gas 13 is detected to be greater than a safety value. The indicating light laser 8 is electrically connected with the control circuit 7 and is used for indicating the space position of the laser emitted by the main laser 1. The power supply 12 is electrically connected to the control circuit 7.
Further comprising: the distance measuring module 9 is electrically connected with the display screen 11; the distance measuring module 9 comprises a distance measuring transmitting end and a distance measuring receiving end, the distance measuring transmitting end emits distance measuring laser, and the distance measuring laser is received by the distance measuring receiving end after being reflected by an object; the distance measuring receiving end obtains a distance signal between the main laser 1 and the object surface 3 by using the received distance measuring laser, and sends the distance signal to the display screen 11 for displaying.
The invention relates to a gas remote measuring device based on a quantum cascade laser or an interband cascade laser.A control circuit 7 drives a main laser 1 to emit laser, the laser is collimated by a collimating lens 2 and then irradiates to an object surface 3 through a target gas 13, the laser generates diffuse reflection on the object surface 3, part of the laser of the diffuse reflection is converged to a photoelectric detector 6 through the target gas 13 through a light receiving lens 4 and a window sheet 5, the photoelectric detector 6 converts a received optical signal into an electric signal, and the control circuit 7 carries out filtering amplification and calculation on the electric signal and outputs the concentration of the target gas 13. The gas remote measuring device of the embodiment can be used in cooperation with equipment such as an unmanned aerial vehicle, a robot, a patrol vehicle, a telemeter, a cloud deck and the like, and all the equipment belongs to the protection scope of the invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some or all technical features may be made without departing from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A gas telemetry device based on a quantum cascade laser or an interband cascade laser, comprising: the device comprises a main laser (1), a collimating lens (2), a light receiving lens (4), a photoelectric detector (6) and a control circuit (7);
the main laser (1) and the photoelectric detector (6) are respectively and electrically connected with a control circuit (7), and the main laser (1) adopts a quantum cascade laser or an interband cascade laser; the collimating lens (2) is arranged at the emitting end of the main laser (1), laser emitted by the main laser (1) is collimated through the collimating lens (2) and then penetrates through the target gas (13), the target gas (13) absorbs laser components with specific wavelengths in the laser, the laser irradiates the surface (3) of the object, and part of the laser reflected by the surface (3) of the object is absorbed again through the target gas (13);
the light receiving lens (4) is arranged at a receiving end of the gas remote measuring device, the light receiving lens (4) receives laser which is absorbed again by target gas (13) and converges to the photoelectric detector (6), the photoelectric detector (6) converts received optical signals into electric signals, and the electric signals are filtered and amplified through the control circuit (7) and calculate and output the concentration of the target gas (13).
2. The quantum cascade laser or interband cascade laser-based gas telemetry device of claim 1, further comprising: the alarm device comprises a display screen (11) and an alarm module (10) electrically connected with the display screen (11);
the display screen (11) is used for displaying the concentration of the target gas and the distance between the main laser (1) and the surface (3) of the object;
and the alarm module (10) is used for giving an alarm when the detected concentration of the target gas (13) is greater than a safety value.
3. The quantum cascade laser or interband cascade laser-based gas telemetry device of claim 2, further comprising: the distance measuring module (9) is electrically connected with the display screen (11);
the distance measurement module (9) comprises a distance measurement transmitting end and a distance measurement receiving end, the distance measurement transmitting end emits distance measurement laser, and the distance measurement laser is received by the distance measurement receiving end after being reflected by an object;
the distance measuring receiving end obtains a distance signal between the main laser (1) and the object surface (3) by using the received distance measuring laser, and sends the distance signal to the display screen (11).
4. The quantum cascade laser or interband cascade laser-based gas telemetry device according to claim 1 or 2, further comprising: an indication light laser (8) electrically connected with the control circuit (7); the indicating light laser (8) is used for indicating the space position of the laser emitted by the main laser (1).
5. The quantum cascade laser or interband cascade laser-based gas telemetry device according to claim 1 or 2, further comprising: a power supply (12) for supplying power; the power supply (12) is electrically connected with the control circuit (7).
6. The quantum cascade laser or interband cascade laser-based gas telemetry device according to claim 1, wherein the collimating lens (2) and the light collecting lens (4) are coated with antireflection films for absorption lines of the target gas (13).
7. The gas telemetry device based on quantum cascade laser or interband cascade laser as claimed in claim 1, characterized in that the primary laser (1) emits a laser beam axis, a collimating lens (2) axis, and a light collecting lens (4) axis, and the included angle between each axis is less than 30 °.
8. The quantum cascade laser or interband cascade laser based gas telemetry device according to claim 1, wherein the gas telemetry device detects a target gas (13) in a wavelength band range of 2-12um, in which toxic, flammable, environmental pollution, or process detection-required gas can be detected.
9. The quantum cascade laser or interband cascade laser-based gas telemetry device according to claim 1, characterized in that a window sheet (5) is disposed on a receiving side of the light collecting lens (4), and the light collecting lens (4) and the window sheet (5) converge laser light reflected by the object surface to the photodetector (6).
10. The quantum cascade laser or interband cascade laser based gas telemetry device according to claim 1 or 9, characterized in that the photodetector (6) is an HgCdTe photodetector.
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| CN112577913A (en) * | 2020-10-20 | 2021-03-30 | 山东拙诚智能科技有限公司 | Method and system for detecting concentration of trace gas based on spectral absorption principle |
| CN112782118A (en) * | 2020-12-24 | 2021-05-11 | 中国科学院合肥物质科学研究院 | Multichannel methane leakage optical remote measuring device and measuring method |
| CN113030019A (en) * | 2021-03-18 | 2021-06-25 | 数量级(上海)信息技术有限公司 | Miniature laser methane telemetering device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020049389A1 (en) * | 1996-09-04 | 2002-04-25 | Abreu Marcio Marc | Noninvasive measurement of chemical substances |
| CN106323878A (en) * | 2016-08-08 | 2017-01-11 | 中国科学院合肥物质科学研究院 | Laser remote sensing detector for natural gas concentration and distance |
| CN108362664A (en) * | 2018-03-30 | 2018-08-03 | 华电智控（北京）技术有限公司 | Telemetering motor vehicle tail equipment and system |
| CN111208082A (en) * | 2020-01-20 | 2020-05-29 | 嘉兴极光物联网科技有限公司 | Gas detection system based on mid-infrared absorption spectrum measurement |
| US10677713B1 (en) * | 2016-08-04 | 2020-06-09 | Hrl Laboratories, Llc | Adaptive gas analyzer |
| CN212340998U (en) * | 2020-07-17 | 2021-01-12 | 大连艾科科技开发有限公司 | Gas telemetering device based on quantum cascade laser or interband cascade laser |
-
2020
- 2020-07-17 CN CN202010688944.8A patent/CN111693490A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020049389A1 (en) * | 1996-09-04 | 2002-04-25 | Abreu Marcio Marc | Noninvasive measurement of chemical substances |
| US10677713B1 (en) * | 2016-08-04 | 2020-06-09 | Hrl Laboratories, Llc | Adaptive gas analyzer |
| CN106323878A (en) * | 2016-08-08 | 2017-01-11 | 中国科学院合肥物质科学研究院 | Laser remote sensing detector for natural gas concentration and distance |
| CN108362664A (en) * | 2018-03-30 | 2018-08-03 | 华电智控（北京）技术有限公司 | Telemetering motor vehicle tail equipment and system |
| CN111208082A (en) * | 2020-01-20 | 2020-05-29 | 嘉兴极光物联网科技有限公司 | Gas detection system based on mid-infrared absorption spectrum measurement |
| CN212340998U (en) * | 2020-07-17 | 2021-01-12 | 大连艾科科技开发有限公司 | Gas telemetering device based on quantum cascade laser or interband cascade laser |
Cited By (11)
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|---|---|---|---|---|
| CN112577913A (en) * | 2020-10-20 | 2021-03-30 | 山东拙诚智能科技有限公司 | Method and system for detecting concentration of trace gas based on spectral absorption principle |
| CN112577913B (en) * | 2020-10-20 | 2022-10-18 | 山东拙诚智能科技有限公司 | Method and system for detecting concentration of trace gas based on spectral absorption principle |
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