CN110554002A - Hydrogen sulfide concentration detection module, hydrogen sulfide concentration telemeter and application - Google Patents
Hydrogen sulfide concentration detection module, hydrogen sulfide concentration telemeter and application Download PDFInfo
- Publication number
- CN110554002A CN110554002A CN201910939160.5A CN201910939160A CN110554002A CN 110554002 A CN110554002 A CN 110554002A CN 201910939160 A CN201910939160 A CN 201910939160A CN 110554002 A CN110554002 A CN 110554002A
- Authority
- CN
- China
- Prior art keywords
- hydrogen sulfide
- laser
- lens
- sulfide concentration
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
- G01S17/32—Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
-
- 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
Abstract
The invention relates to the technical field of gas concentration detection, and provides a hydrogen sulfide concentration detection module, a hydrogen sulfide concentration telemeter and application thereof, wherein the hydrogen sulfide concentration detection module comprises a laser sensing module, a signal detection unit and a singlechip control circuit; the measuring light laser emits laser, when the laser passes through hydrogen sulfide gas, hydrogen sulfide molecules absorb laser components in the wavelength range of 2540-; the signal detection unit receives the converged laser signals and converts the laser signals into original electric signals; the single chip microcomputer control circuit receives and amplifies and filters the original electric signal to obtain a processed electric signal; and carrying out differential processing on the processed electric signals to obtain a hydrogen sulfide concentration signal to be detected. The invention can measure the concentration of hydrogen sulfide in a certain range in space, and has high stability and high measurement precision.
Description
Technical Field
the invention relates to the field of gas concentration detection, in particular to a hydrogen sulfide concentration detection module, a hydrogen sulfide concentration telemeter and application.
Background
The hydrogen sulfide has a molecular formula of H 2 S, is a flammable acidic gas under the standard condition, is colorless, has a smelly egg smell at a low concentration, has a sulfur smell at a very low concentration, and is extremely toxic.
the main method applied to hydrogen sulfide detection at present comprises the steps of carrying out oxidation reaction on mixed gas of hydrogen sulfide and oxygen on the surface of a catalyst under a high-temperature condition to generate SO 2 and H 2 O, obtaining the concentration of the hydrogen sulfide according to the product SO 2, enabling the hydrogen sulfide mixed gas and the oxygen to fully react with ozone converted from the oxygen in a closed air chamber under the irradiation of an ultraviolet lamp to convert hydrogen sulfide gas into sulfur dioxide gas, obtaining a characteristic absorption spectrum data signal of the converted sulfur dioxide gas through a spectrometer after the hydrogen sulfide gas is fully converted into sulfur dioxide to obtain the concentration of the hydrogen sulfide, carrying out pre-catalytic treatment on an air sample mixed with the hydrogen sulfide and the hydrogen sulfide gas with standard concentration through high-purity nitrogen respectively to prepare a solution containing sulfur ions, and measuring a sulfur ion concentration curve through an ion chromatograph to obtain the concentration of the hydrogen sulfide of the air sample.
The hydrogen sulfide gas concentration is measured at the present stage, most hydrogen sulfide is converted into other substances, the amount of converted substances is measured and compared with that of standard gas in the same way, the hydrogen sulfide concentration in the gas to be measured is indirectly measured, related reactants are consumed in the test process, the operation process is complex, the measurement time is long, the hydrogen sulfide is toxic gas, and great risks exist in the personnel operation process. The test equipment has large volume, is inconvenient to carry out rapid and direct test on site, has high requirement on the professional level of operators, and is inconvenient to popularize industrially and rapidly.
Disclosure of Invention
The invention mainly solves the technical problems that hydrogen sulfide detection equipment in the prior art can only measure the concentration of single-point hydrogen sulfide, has poor stability, low measurement precision and response speed in the operation process, can not feed back the concentration of the hydrogen sulfide in time and the like, provides a hydrogen sulfide concentration detection module, a hydrogen sulfide concentration telemeter and application, can directly measure the concentration of the hydrogen sulfide in a certain range in space, has the characteristics of small volume, high measurement speed, high precision and no maintenance, and can be measured on site by common operators.
The invention provides a hydrogen sulfide concentration telemeter, which comprises: the device comprises a laser sensing module (13), a signal detection unit (7) and a singlechip control circuit (9);
the laser sensing module (13) comprises: a first lens (3), a signal detection unit (7) and a measuring light laser (4) arranged near the first lens (3); the measuring light laser (4) is electrically connected with the singlechip control circuit (9);
the measuring light laser (4) emits laser, when the laser passes through hydrogen sulfide gas, hydrogen sulfide molecules absorb laser components in the wavelength range of 2540nm-2670nm in the laser, part of the laser reflected by the surface of an object is absorbed by the hydrogen sulfide gas and then irradiates the first lens (3), and the laser is converged to the signal detection unit (7) through the first lens (3);
The signal detection unit (7) is arranged at the focus of the first lens (3), and the signal detection unit (7) receives the converged laser signals and converts the laser signals into original electric signals;
The single chip microcomputer control circuit (9) is electrically connected with the signal detection unit (7), and the single chip microcomputer control circuit (9) receives and amplifies and filters the original electric signal to obtain a processed electric signal; and carrying out differential processing on the processed electric signals to obtain a hydrogen sulfide concentration signal to be detected.
preferably, the laser sensing module (13) further comprises: a second lens (10) and a window sheet (11);
The second lens (10) is arranged right behind the first lens (3);
The window sheet (11) is arranged right behind the second lens (10) or between the second lens (10) and the first lens (3).
Preferably, the laser sensing module (13) further comprises: an indicator light laser (5);
The indicating light laser (5) is arranged near the measuring light laser (4) and used for indicating the position of a light beam emitted by the measuring light laser (4), and the indicating light laser (5) is electrically connected with the single chip microcomputer control circuit (9).
preferably, the laser sensing module (13) further comprises a distance measuring module (6);
the distance measuring module (6) is arranged near the lens (3), and the distance measuring module (6) is electrically connected with the singlechip control circuit (9);
The distance measurement module (6) 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 hydrogen sulfide concentration telemeter and an object by using the received distance measuring laser, and sends the distance signal to the singlechip control circuit (9).
Preferably, the method further comprises the following steps: an alarm module (15);
The alarm module (15) is electrically connected with the singlechip control circuit (9).
Preferably, the surfaces of the first lens (3) and/or the second lens (10) are plated with dielectric films with anti-reflection functions of 2540nm-2670 nm.
Preferably, the method further comprises the following steps: a display screen (2);
the display screen (2) is electrically connected with the singlechip control circuit (9).
correspondingly, the invention also provides a hydrogen sulfide concentration telemeter, which comprises: the hydrogen sulfide concentration detection module provided by the first embodiment of the invention;
the hydrogen sulfide concentration telemeter comprises a shell (1); the shell (1) adopts a handheld gun-shaped structure.
Preferably, a laser sensing module (13) is arranged at the front end of the shell (1);
The surface of the shell (1) is provided with a display screen (2), an alarm module (15), a control key (16) and a flashing lamp (12), and the flashing lamp (12) is electrically connected with the singlechip control circuit (9);
A battery (8) and a singlechip control circuit (9) are arranged in the shell (1); and the battery (8) is electrically connected with the singlechip control circuit (9) and the ranging module (6).
correspondingly, the invention also provides application of the hydrogen sulfide concentration detection module in terminals of unmanned aerial vehicles, robots, inspection vehicles and other fixed equipment.
The hydrogen sulfide concentration detection module and the telemeter can measure the concentration of hydrogen sulfide in a certain range in an open space by combining a laser technology, have high stability, high measurement precision and high response speed, can detect the concentration of hydrogen sulfide in a specific area and an area where people are difficult to reach, do not need to consume hydrogen sulfide reactants, and have the advantages of portability and maintenance-free property. The invention can realize the quantitative detection of the concentration of the hydrogen sulfide gas between the module and the reflecting surface within the range of 0-200m in space, and prevent the hydrogen sulfide gas from generating irreversible toxicity and air pollution to workers. Compared with single-point hydrogen sulfide concentration detection equipment, the method has great technical progress.
The invention can solve the problem of rapid detection of hydrogen sulfide in the industries of chemical industry, biology, environmental application and the like. The hydrogen sulfide concentration detection module is not limited to be used in a handheld mode, and can be used in cooperation with other equipment such as a robot, an unmanned aerial vehicle, a patrol vehicle and other fixed equipment terminals to detect the concentration of hydrogen sulfide. Has important application value in the industries of petrochemical industry, biology, environmental application and the like.
drawings
FIG. 1 is a schematic diagram of a connection of a hydrogen sulfide concentration detection module provided in an embodiment of the present invention;
Fig. 2 is a first schematic structural diagram of a laser sensing module according to an embodiment of the present invention;
Fig. 3 is a schematic structural diagram ii of a laser sensing module according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a measurement principle of a hydrogen sulfide concentration detection module provided in an embodiment of the present invention;
FIG. 5 is a schematic diagram of a hydrogen sulfide concentration telemeter provided by an embodiment of the present invention;
FIG. 6 is a side view of a hydrogen sulfide concentration telemeter provided by an embodiment of the present invention.
reference numerals: 1. a housing; 2. a display screen; 3. a first lens; 4. a measuring light laser; 5. an indicator light laser; 6. a distance measurement module; 7. a signal detection unit; 8. a battery; 9. a singlechip control circuit; 10. a second lens; 11. a window sheet; 12. a flashing light; 13. a laser sensing module; 14. a charging module; 15. an alarm module; 16. a control key; 17. a laser beam; 18. hydrogen sulfide gas; 19. the surface of the object.
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.
Example one
fig. 1 is a schematic connection diagram of a hydrogen sulfide concentration detection module according to an embodiment of the present invention. As shown in fig. 1, a hydrogen sulfide concentration detection module provided in an embodiment of the present invention includes: the device comprises a laser sensing module 13, a signal detection unit 7, a signal processing circuit 12 and a singlechip control circuit 9.
Fig. 2 is a first schematic structural diagram of a laser sensing module according to an embodiment of the present invention; fig. 3 is a schematic structural diagram of a laser sensing module according to an embodiment of the present invention. As shown in fig. 2 and 3, the laser sensing module 13 includes: the device comprises a first lens 3, a second lens 10, a window sheet 11, a signal detection unit 7, a measuring light laser 4 arranged near the lens 3 and an indicating light laser 5 arranged near the measuring light laser 4, wherein the indicating light laser 5 is used for indicating the position of a light beam emitted by the measuring light laser 4; the measuring light laser 4 and the indicating light laser 5 are respectively and electrically connected with the singlechip control circuit 9; the measuring light laser 4 and the indicating light laser 5 are controlled by the singlechip control circuit 9.
The second lens 10 is arranged right behind the first lens 3; the window sheet 11 is disposed directly behind the second lens 10 or between the second lens 10 and the first lens 3. The positions of the window sheet 11 and the second lens 10 can be interchanged, the two functions are realized in a superposition mode, the second lens 10 can be a single lens or a lens group, and the realized function is to shape the light beam converged by the first lens 3 again so that the signal detection unit 7 can receive more optical signals. The signal detection unit 7 has functions of collecting optical signals, receiving optical signals of specific wave bands, and shielding optical signals of non-specific wave bands. The signal detection unit 7 adopts an optical signal detector and responds to optical signals with the wavelength of 2540nm-2670 nm. In the present embodiment, the second lens 10, the window plate 11 and the optical signal detector are coaxial. The surfaces of the first lens 3, the second lens 10 and the window sheet 11 are plated with a dielectric film with anti-reflection or light filtering functions in a response wavelength range (2540nm-2670nm) of the signal detection unit 7, so as to achieve the functions of increasing the transmittance of the measurement light passing through the lens 3, receiving a specific light band signal by the signal detection unit 7 and shielding non-measurement light of a non-specific light band (the specific light band refers to a certain range near a certain spectral line with absorption in the wavelength range of 2540nm-2670nm, the range is in a sub-range of the range of 2540nm-2670nm, the non-specific light band refers to the range of 2540nm-2670nm, the range outside the certain range near the certain spectral line with absorption and the range outside the signal detection unit response range of the range of 2540nm-2670 nm). The window sheet has the functions of receiving specific optical band signals and shielding non-measurement light of non-specific optical bands by the optical signal detector.
In this embodiment, the measuring light laser 4 adjusts the wavelength of laser emitted by the laser semiconductor chip by modulating the drive current of the dfb (distributed Feedback laser) laser semiconductor chip, couples the light beam emitted by the laser semiconductor chip into the sulfide optical fiber and then collimates the light beam by the collimator or directly collimates the light beam emitted by the laser semiconductor chip, and the collimated laser light beam can measure the concentration of the hydrogen sulfide gas by combining the first lens 3 and the signal detection unit 7.
in this embodiment, instruct light laser 5 and measure light laser 4 simultaneous working, can instruct measuring light beam position through the instruction light that instructs light laser 5 to send, make things convenient for the tester to find the space range of the hydrogen sulfide that awaits measuring.
The detailed process of this embodiment is as follows: the measuring light laser 4 emits laser, when the laser passes through hydrogen sulfide gas, hydrogen sulfide molecules absorb laser components in the wavelength range of 2540nm-2670nm in the laser, part of the laser reflected by the surface of the object is absorbed by the hydrogen sulfide gas and then irradiates the first lens 3, and the laser is converged to the signal detection unit 7 through the first lens 3.
The signal detection unit 7 is arranged at the rear end of the first lens 3, the signal detection unit 7 is coaxial with the first lens 3, namely the signal detection unit 7 is arranged at the focus of the first lens 3, and the signal detection unit 7 receives converged laser signals and converts the laser signals into original electric signals; the signal detection unit 7 has good response characteristic and selective permeability in the optical signal with the wavelength of 2540nm-2670nm, and has good cut-off characteristic in the range of the rest wave bands.
The single chip microcomputer control circuit 9 is electrically connected with the signal detection unit 7, and the single chip microcomputer control circuit 9 receives and amplifies and filters the original electric signal to obtain a processed electric signal; and carrying out differential processing on the processed electric signals to obtain a hydrogen sulfide concentration signal to be detected. The single chip microcomputer control circuit 9 sends the hydrogen sulfide concentration signal to the display circuit 10, and the display circuit 10 processes the hydrogen sulfide concentration signal and displays the hydrogen sulfide concentration signal through the display screen 2.
Specifically, the single chip microcomputer control circuit 9 outputs a sawtooth wave (direct absorption method) or superposes a current signal of a sine wave (second harmonic method) on the basis of the sine wave, the measuring light laser with modulated wavelength is driven to emit a measuring light laser beam with modulated wavelength, when the measuring light laser beam with modulated wavelength passes through hydrogen sulfide gas, hydrogen sulfide gas molecules selectively absorb a light beam with a specific wavelength (2540nm-2670nm), the signal detection unit 7 receives a laser signal with the wavelength absorbed by the hydrogen sulfide molecules in a continuous modulation range, converts the detected laser signal absorbed by the gas molecules into an electric signal, after the single chip microcomputer control circuit 9 amplifies and filters, the single chip microcomputer control circuit 9 combines with Lambert-Beer law, calculates a deviation value under ideal conditions when the gas molecules absorb and are not absorbed by the gas molecules in a differential and differential calculation mode, and obtaining the hydrogen sulfide concentration information.
in this embodiment, the laser sensing module 13 further includes a ranging module 6; the distance measuring module 6 is arranged near the lens 3 or the measuring light laser 4, for example, the distance measuring module 6 is arranged on two sides of the lens 3 opposite to the measuring light laser 4 and the indicating light laser 5; the distance measuring module 6 is electrically connected with the singlechip control circuit 9; the distance measuring module 6 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 hydrogen sulfide concentration detection module and the object by using the received distance measuring laser, and sends the distance signal to the singlechip control circuit 9. The singlechip control circuit 9 sends the distance signal to the display screen 2 for distance display. The distance between the hydrogen sulfide concentration detection module and the internal reflection object of the measured space is measured by the distance measurement module 6, and is displayed by the display screen 2.
The hydrogen sulfide concentration telemeter of this embodiment still includes: a battery 8 and a charging module 14 for charging the battery 8; the battery 8 and the housing 1 can be movably connected or the battery 8 is fixed in the housing 1. For example, the battery 8 supplies power to the distance measuring module 6 and the single chip microcomputer control circuit 9 through a connecting line, the distance measuring module 6 transmits measured distance information to the single chip microcomputer control circuit 9 through the connecting line, the single chip microcomputer control circuit drives the display screen 2 to display the distance information, and the single chip microcomputer control circuit 9 supplies power to the display screen 2 through the connecting line. In addition, the battery 8 may be an explosion-proof battery having an explosion-proof function. This embodiment makes things convenient for the telemeter to hand and carry, improves the practicality of device, is favorable to the device to promote on the market. The present embodiment does not specifically limit the form of the battery 8.
the hydrogen sulfide concentration telemeter of this embodiment still includes: an alarm module 15 and a flashing light 12; the alarm module 15 and the flashing lamp 12 are respectively and electrically connected with the singlechip control circuit 9, the alarm module 15 adopts sound vibration alarm equipment, and the flashing lamp 12 carries out light flashing alarm. When the hydrogen sulfide is detected, the singlechip control circuit 9 controls the alarm module 15 and the flashing lamp 12 to give an alarm.
The hydrogen sulfide concentration detection module of this embodiment further includes: a display screen 2; the display screen 2 is electrically connected with the singlechip control circuit 9. The display circuit 10 processes the data fed back by the singlechip control circuit 9 and the set parameters, outputs measurement information on the display screen 2 and drives the alarm module 15 and the flashing lamp 12 to carry out sound-light alarm.
The surface 19 of the object reflecting the laser light in this embodiment may be a metal surface or a surface of a substance that performs an equivalent reflection function.
the invention utilizes TDLAS (tunable Diode Laser Absorption spectroscopy) technology, combines the spectral Absorption peak of hydrogen sulfide molecules in the range of 2540nm-2670nm, when the Laser beam emitted by a measuring Laser 4 passes through hydrogen sulfide gas, the hydrogen sulfide molecules have selective Absorption function on the light with specific wavelength (2540nm-2670nm), the Laser component with specific wavelength in the beam is absorbed and then irradiated to the surface of an object, part of the Laser reflected by the surface of the object is absorbed by the hydrogen sulfide gas and then irradiated to a lens 3, and the Laser is converged to a signal detection unit 7 through the lens 3. The signal detection unit 7 receives an optical signal of the measuring optical laser when the wavelength is continuously changed in the modulation range, converts the optical signal into an electric signal, combines the Lambert-Beer law, and outputs hydrogen sulfide gas concentration information between the concentration detection module and the object surface within the range of 0-200m after circuit amplification and single chip processing. The distance measuring module measures the distance between the surface of the object and the telemeter, and the concentration and distance information is displayed by combining the display screen.
Fig. 4 is a schematic view of a measurement principle of a hydrogen sulfide concentration detection module according to an embodiment of the present invention. As shown in fig. 4, the working principle of the hydrogen sulfide concentration detection module of the present embodiment is summarized as follows: the single chip microcomputer control circuit 9 sends a modulation signal to drive the measuring light laser 4 to work, the indicating light laser 5 indicates the spatial position of the measuring light beam emitted by the measuring light laser 4, the measuring laser beam 17 is absorbed by hydrogen sulfide gas 18 and reflected by an object surface 19, part of reflected light irradiates the signal detection unit 7 through the first lens 3, the second lens 10 and the window sheet 11, the signal detection unit 7 converts the collected light signal into an electric signal, the electric signal is transmitted to the single chip microcomputer control circuit 9 to be amplified, filtered and calculated, hydrogen sulfide concentration information is output, and the single chip microcomputer control circuit 9 transmits the hydrogen sulfide concentration data to the display screen 2 to be displayed.
Example two
FIG. 5 is a schematic diagram of a hydrogen sulfide concentration telemeter provided by an embodiment of the present invention; FIG. 6 is a side view of a hydrogen sulfide concentration telemeter provided by an embodiment of the present invention. As shown in fig. 5 and 6, the hydrogen sulfide concentration telemeter comprises a housing 1; the shell 1 adopts a handheld gun-shaped structure.
The front end of the shell 1 is provided with a laser sensing module 13; the surface of the shell 1 is provided with a display screen 2, an alarm module 15, a control key 16 and a flashing lamp 12; the inside battery 8, singlechip control circuit 9 that set up of shell 1, control button 16 are used for controlling and revise telegauge operating condition, and control button 16 links to each other with singlechip control circuit 9 through the connecting wire, sets up telegauge operating condition and alarm value through control button 16, and long press control button can realize telegauge switch and operation. The battery 8 is arranged at the handle position of the "gun" configuration.
The hydrogen sulfide concentration telemeter that this embodiment provided, measure optical laser 4 in the testing process, ranging module 6 and 5 simultaneous workings of instruction optical laser, the optical laser is measured in the drive of singlechip control circuit 9, combine 7 hydrogen sulfide concentrations in the detection space of signal detection unit, the spatial position of measuring light is instructed to instruction optical laser 5, ranging module 6 measures target object apart from the telemeter distance, the space within range hydrogen sulfide concentration and the distance information of real-time display telemeter apart from the plane of reflection in display screen 2 after singlechip control circuit 9 handles.
EXAMPLE III
the hydrogen sulfide concentration detection module provided by the embodiment of the invention is applied to terminals of unmanned aerial vehicles, robots, inspection vehicles and other fixed equipment. The hydrogen sulfide concentration detection module of this embodiment is fixed on unmanned aerial vehicle, robot, patrol and examine car and other fixed equipment terminals through other application methods and realizes that open hydrogen sulfide concentration detection module carries out hydrogen sulfide concentration detection to different spaces. Meanwhile, the hydrogen sulfide concentration detection module can be arranged in other hydrogen sulfide detection scenes to detect the hydrogen sulfide concentration in other application scenes, and the hydrogen sulfide concentration detection module 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 hydrogen sulfide concentration detection module, comprising: the device comprises a laser sensing module (13), a signal detection unit (7) and a singlechip control circuit (9);
The laser sensing module (13) comprises: a first lens (3), a signal detection unit (7) and a measuring light laser (4) arranged near the first lens (3); the measuring light laser (4) is electrically connected with the singlechip control circuit (9);
The measuring light laser (4) emits laser, when the laser passes through hydrogen sulfide gas, hydrogen sulfide molecules absorb laser components in the wavelength range of 2540nm-2670nm in the laser, part of the laser reflected by the surface of an object is absorbed by the hydrogen sulfide gas and then irradiates the first lens (3), and the laser is converged to the signal detection unit (7) through the first lens (3);
The signal detection unit (7) is arranged at the focus of the first lens (3), and the signal detection unit (7) receives the converged laser signals and converts the laser signals into original electric signals;
The single chip microcomputer control circuit (9) is electrically connected with the signal detection unit (7), and the single chip microcomputer control circuit (9) receives and amplifies and filters the original electric signal to obtain a processed electric signal; and carrying out differential processing on the processed electric signals to obtain a hydrogen sulfide concentration signal to be detected.
2. the hydrogen sulfide concentration detection module according to claim 1, wherein the laser sensing module (13) further comprises: a second lens (10) and a window sheet (11);
the second lens (10) is arranged right behind the first lens (3);
The window sheet (11) is arranged right behind the second lens (10) or between the second lens (10) and the first lens (3).
3. The hydrogen sulfide concentration detection module according to claim 1 or 2, wherein the laser sensing module (13) further comprises: an indicator light laser (5);
The indicating light laser (5) is arranged near the measuring light laser (4) and used for indicating the position of a light beam emitted by the measuring light laser (4), and the indicating light laser (5) is electrically connected with the single chip microcomputer control circuit (9).
4. The hydrogen sulfide concentration detection module according to claim 1, wherein the laser sensing module (13) further comprises a distance measurement module (6);
The distance measuring module (6) is arranged near the lens (3), and the distance measuring module (6) is electrically connected with the singlechip control circuit (9);
The distance measurement module (6) 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 hydrogen sulfide concentration telemeter and an object by using the received distance measuring laser, and sends the distance signal to the singlechip control circuit (9).
5. the hydrogen sulfide concentration detection module according to claim 1, characterized by further comprising: an alarm module (15);
The alarm module (15) is electrically connected with the singlechip control circuit (9).
6. The hydrogen sulfide concentration detection module according to claim 2, wherein the first lens (3) and/or the second lens (10) is/are coated with a dielectric film having an anti-reflection performance ranging from 2540nm to 2670 nm.
7. The hydrogen sulfide concentration detection module according to claim 1, characterized by further comprising: a display screen (2);
the display screen (2) is electrically connected with the singlechip control circuit (9).
8. a telemeter for detecting a hydrogen sulfide concentration, comprising the hydrogen sulfide concentration detecting module according to any one of claims 1 to 7;
The hydrogen sulfide concentration telemeter comprises a shell (1); the shell (1) adopts a handheld gun-shaped structure.
9. a telemeter for hydrogen sulfide concentration according to claim 8, wherein a laser sensing module (13) is provided at the front end of the housing (1);
the surface of the shell (1) is provided with a display screen (2), an alarm module (15), a control key (16) and a flashing lamp (12), and the flashing lamp (12) is electrically connected with the singlechip control circuit (9);
a battery (8) and a singlechip control circuit (9) are arranged in the shell (1); and the battery (8) is electrically connected with the singlechip control circuit (9) and the ranging module (6).
10. use of the hydrogen sulfide concentration detection module of any one of claims 1 to 7 in terminals of unmanned aerial vehicles, robots, inspection vehicles and other stationary equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910939160.5A CN110554002A (en) | 2019-09-30 | 2019-09-30 | Hydrogen sulfide concentration detection module, hydrogen sulfide concentration telemeter and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910939160.5A CN110554002A (en) | 2019-09-30 | 2019-09-30 | Hydrogen sulfide concentration detection module, hydrogen sulfide concentration telemeter and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110554002A true CN110554002A (en) | 2019-12-10 |
Family
ID=68742056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910939160.5A Pending CN110554002A (en) | 2019-09-30 | 2019-09-30 | Hydrogen sulfide concentration detection module, hydrogen sulfide concentration telemeter and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110554002A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0406559D0 (en) * | 2004-03-24 | 2004-04-28 | Richman Lee P | Hazardous gas detector |
| CN101067602A (en) * | 2007-05-29 | 2007-11-07 | 中国科学院安徽光学精密机械研究所 | Portable difference absorption spectrum method and apparatus |
| CN101149342A (en) * | 2007-10-25 | 2008-03-26 | 南京树声科技有限公司 | Laser gas remote measurement method and device |
| CN101782514A (en) * | 2009-11-05 | 2010-07-21 | 胜利油田胜利工程设计咨询有限责任公司 | Online monitoring device for concentration of hydrogen sulfide by laser |
| CN102103071A (en) * | 2010-12-16 | 2011-06-22 | 聚光科技(杭州)股份有限公司 | On-site absorption spectrum gas analysis system |
| CN102269699A (en) * | 2011-07-25 | 2011-12-07 | 北京农业智能装备技术研究中心 | System and method for detecting concentration of hydrogen sulfide gas in poultry house |
| CN102495010A (en) * | 2011-11-18 | 2012-06-13 | 南京国电环保设备有限公司 | High sensitivity optical system of DOAS analyzer |
| CN202886278U (en) * | 2012-03-30 | 2013-04-17 | 北京惟泰安全设备有限公司 | Laser gas remote telemetering device with visible image positioning and recording function |
| CN103884671A (en) * | 2014-03-12 | 2014-06-25 | 中国计量学院 | Nondispersive infrared (NDIR) CO2 gas sensor |
| CN207798676U (en) * | 2018-02-06 | 2018-08-31 | 西安管畅环保科技有限公司 | A kind of number aiming laser is distant away from methane gas detection device |
| US20180252641A1 (en) * | 2015-09-02 | 2018-09-06 | California Institute Of Technology | Method and Apparatus for the Spectroscopic Detection of Low Concentrations of Hydrogen Sulfide Gas |
| CN108519350A (en) * | 2018-04-26 | 2018-09-11 | 中国科学院半导体研究所 | Alcohol concentration telemetering equipment |
| CN208383681U (en) * | 2018-07-30 | 2019-01-15 | 山东恒晋仪器有限公司 | A kind of open space gas detecting instrument assisting remote aiming |
| CN109856078A (en) * | 2019-01-16 | 2019-06-07 | 深圳供电局有限公司 | Optical gas detection system |
| CN208999304U (en) * | 2018-09-21 | 2019-06-18 | 上海禾赛光电科技有限公司 | Laser gas remote measurement instrument |
-
2019
- 2019-09-30 CN CN201910939160.5A patent/CN110554002A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0406559D0 (en) * | 2004-03-24 | 2004-04-28 | Richman Lee P | Hazardous gas detector |
| CN101067602A (en) * | 2007-05-29 | 2007-11-07 | 中国科学院安徽光学精密机械研究所 | Portable difference absorption spectrum method and apparatus |
| CN101149342A (en) * | 2007-10-25 | 2008-03-26 | 南京树声科技有限公司 | Laser gas remote measurement method and device |
| CN101782514A (en) * | 2009-11-05 | 2010-07-21 | 胜利油田胜利工程设计咨询有限责任公司 | Online monitoring device for concentration of hydrogen sulfide by laser |
| CN102103071A (en) * | 2010-12-16 | 2011-06-22 | 聚光科技(杭州)股份有限公司 | On-site absorption spectrum gas analysis system |
| CN102269699A (en) * | 2011-07-25 | 2011-12-07 | 北京农业智能装备技术研究中心 | System and method for detecting concentration of hydrogen sulfide gas in poultry house |
| CN102495010A (en) * | 2011-11-18 | 2012-06-13 | 南京国电环保设备有限公司 | High sensitivity optical system of DOAS analyzer |
| CN202886278U (en) * | 2012-03-30 | 2013-04-17 | 北京惟泰安全设备有限公司 | Laser gas remote telemetering device with visible image positioning and recording function |
| CN103884671A (en) * | 2014-03-12 | 2014-06-25 | 中国计量学院 | Nondispersive infrared (NDIR) CO2 gas sensor |
| US20180252641A1 (en) * | 2015-09-02 | 2018-09-06 | California Institute Of Technology | Method and Apparatus for the Spectroscopic Detection of Low Concentrations of Hydrogen Sulfide Gas |
| CN207798676U (en) * | 2018-02-06 | 2018-08-31 | 西安管畅环保科技有限公司 | A kind of number aiming laser is distant away from methane gas detection device |
| CN108519350A (en) * | 2018-04-26 | 2018-09-11 | 中国科学院半导体研究所 | Alcohol concentration telemetering equipment |
| CN208383681U (en) * | 2018-07-30 | 2019-01-15 | 山东恒晋仪器有限公司 | A kind of open space gas detecting instrument assisting remote aiming |
| CN208999304U (en) * | 2018-09-21 | 2019-06-18 | 上海禾赛光电科技有限公司 | Laser gas remote measurement instrument |
| CN109856078A (en) * | 2019-01-16 | 2019-06-07 | 深圳供电局有限公司 | Optical gas detection system |
Non-Patent Citations (3)
| Title |
|---|
| 刘光达: "《青少年必知的课外知识》", 31 July 2015, 湖北科学技术出版社 * |
| 赵建林: "《高等光学》", 30 September 2002, 国防工业出版社 * |
| 黎敏: "《单片机及传感器技术在汽车上的应用》", 31 August 2016, 电子科技大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106383097B (en) | Remote sensing detection system and method for motor vehicle tail gas based on tunable laser | |
| CN101281125B (en) | Method and apparatus for monitoring intelligent infrared multi-component harmful gas | |
| CN101435773B (en) | Gas monitoring method and apparatus based on quasi continuous diode laser modulated spectrum | |
| CN101487818B (en) | On-line monitoring method and system for gas content in transformer oil | |
| CN100573105C (en) | multi-component gas online test method and device | |
| CN101782514B (en) | Online monitoring device for concentration of hydrogen sulfide by laser | |
| CN102253012B (en) | Device and method for measuring extinction coefficient of black carbon aerosol | |
| CN201063022Y (en) | Device for laser telemetry of double sensitiveness vehicle vent gas | |
| CN102230889A (en) | Air concentration measuring system and method based on super-continuum spectrum light source | |
| CN204575523U (en) | A kind of SF6 gas remote monitoring device | |
| CN102809547A (en) | Method and device for detecting trace gas by scattering-enhanced tunable diode laser | |
| CN111693490A (en) | Gas telemetering device based on quantum cascade laser or interband cascade laser | |
| CN103063591B (en) | Laser analyzer | |
| CN103115877A (en) | Optical detection system for measuring concentrations of different gases | |
| CN110567912A (en) | Carbon monoxide concentration detection module, carbon monoxide concentration telemeter and application | |
| CN107860749A (en) | Based on CO2The portable SF of laser6Leak remote sensing instrument | |
| CN110554002A (en) | Hydrogen sulfide concentration detection module, hydrogen sulfide concentration telemeter and application | |
| CN105588810A (en) | Multifunctional atomic spectrometer | |
| CN111579492A (en) | Portable heavy metal content rapid detection device | |
| CN217846068U (en) | Gas analysis device based on laser | |
| CN207992043U (en) | A kind of optoacoustic spectroscopy detecting system | |
| CN116297279A (en) | Method, system, device and equipment for detecting concentration of formaldehyde gas/VOC gas | |
| CN212568461U (en) | High-speed high-precision NDIR sensor | |
| CN112362546B (en) | High-precision multiband portable particulate matter mass concentration measuring instrument | |
| CN116148187A (en) | Photoacoustic spectroscopy gas detection system based on open differential resonant cavity optical path enhancement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191210 |
|
| RJ01 | Rejection of invention patent application after publication |