CN217766075U - Gas experiment platform of laser spectrum technology - Google Patents
Gas experiment platform of laser spectrum technology Download PDFInfo
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- CN217766075U CN217766075U CN202221550132.8U CN202221550132U CN217766075U CN 217766075 U CN217766075 U CN 217766075U CN 202221550132 U CN202221550132 U CN 202221550132U CN 217766075 U CN217766075 U CN 217766075U
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Abstract
The utility model discloses a gas experiment platform of laser spectrum technology, including first laser instrument, second laser instrument and lens, the light-emitting end of lens is provided with first speculum and revolving mirror respectively, the light-emitting end of revolving mirror is provided with the beam splitter, the light-emitting end of beam splitter is provided with second speculum and third speculum respectively; the light-emitting end of the second reflector is provided with a first detecting head, the light-emitting end of the third reflector is provided with a multiple reflection pool, the light-emitting end of the multiple reflection pool is provided with a fourth reflector, and the light-emitting end of the fourth reflector is provided with a second detecting head. The utility model discloses possess the accurate advantage of testing result, the in-process of using of the gaseous experiment platform that has solved present laser spectroscopy technique is not convenient for detect air and gaseous material of detection simultaneously to contrast the testing result, reduced the problem of gaseous detection accuracy.
Description
Technical Field
The utility model relates to a gas experiment technical field specifically is a gas experiment platform of laser spectroscopy technique.
Background
In a gas experiment, the molecular structure of a gas needs to be detected to analyze the components of the gas, the molecular structure in the gas can be detected by laser, laser spectroscopy is a technical means for gas detection, and laser spectroscopy is a spectroscopic technique using laser as a light source.
When gas molecules are irradiated by infrared radiation, infrared light with respective characteristic wavelength is absorbed, the vibration energy level and the rotation energy level of the molecules are transited, a vibration-rotation absorption spectrum, namely an infrared absorption spectrum, is generated, and in a certain gaseous substance concentration range, the relation between the peak value of the absorption spectrum and the concentration of the gaseous substance conforms to the Lambert-beer law, so that the concentration of the gaseous substance can be determined by measuring absorbance.
The in-process that present laser spectroscopy's gaseous experiment platform was used, the infrared light passes the air and enters into the reflecting pool, and gaseous state material in the air can absorb the specific wavelength in the infrared light, influences the accuracy that gaseous detected, is not convenient for detect air and gaseous state material simultaneously to contrast the testing result, improve gaseous accuracy that detects.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gas experiment platform of laser spectrum technique possesses the accurate advantage of testing result, and the in-process of using of the gas experiment platform of having solved present laser spectrum technique is not convenient for detect air and gaseous material that detects simultaneously to contrast the testing result, reduced the problem of gaseous detection accuracy.
In order to achieve the above object, the utility model provides a following technical scheme: a gas experiment platform of a laser spectrum technology comprises a first laser, a second laser and a lens, wherein a first reflecting mirror and a rotary mirror are respectively arranged at the light emitting end of the lens, a beam splitter is arranged at the light emitting end of the rotary mirror, and a second reflecting mirror and a third reflecting mirror are respectively arranged at the light emitting end of the beam splitter;
a first detecting head is arranged at the light emitting end of the second reflector, a multiple reflection pool is arranged at the light emitting end of the third reflector, a fourth reflector is arranged at the light emitting end of the multiple reflection pool, and a second detecting head is arranged at the light emitting end of the fourth reflector;
the signal output end electric connection of first detecting head and second detecting head has balanced detector, balanced detector's output electric connection has the lock phase and amplifies the module, the output electric connection that the module was amplified in the lock phase has DAQ signal acquisition module, DAQ signal acquisition module's output electric connection has the industrial computer, the output of industrial computer electric connection has current drive module and temperature control module respectively.
In the infrared light reflection to the revolving mirror of second laser instrument transmission for the convenience, as the utility model discloses a gaseous experiment platform of laser spectrum technique is preferred, the light-emitting end of first speculum sets up the income light end department at the revolving mirror.
In order to facilitate the control of the air intake of the multiple reflection tank, the utility model discloses a gas experiment platform of laser spectroscopy is preferred, the inlet end intercommunication of multiple reflection tank has the admission valve.
In order to facilitate carrying out the evacuation to the multiple reflection pond, conduct the utility model discloses a gas experiment platform of laser spectroscopy is preferred, the end of giving vent to anger of multiple reflection pond communicates respectively has pressure gauge and air outlet valve, the end intercommunication of giving vent to anger of air outlet valve has the aspiration pump.
For the convenience of control first laser instrument and second laser instrument work, conduct the utility model discloses a gaseous experiment platform of laser spectroscopy is preferred, current drive module and temperature control module's output respectively with the input electric connection of first laser instrument and second laser instrument.
In order to facilitate the concentration of the infrared light emitted by the first laser and the second laser, as the utility model discloses a gas experiment platform of laser spectrum technology is preferred, lens sets up the light-emitting end at the first laser and the second laser.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model discloses a first laser instrument, the second laser instrument, the gyration mirror, the beam splitter, the third speculum, the multiple reflection pond, the second detecting head, the fourth speculum, the second speculum, first detecting head, first speculum, lens, the industrial computer, temperature control module, DAQ signal acquisition module, the module is enlargied in the lock-in, balanced detector and current drive module's cooperation is used, the in-process that the gaseous experiment platform of having solved present laser spectrum technique is using, be not convenient for detect air and gaseous material of detection simultaneously, and contrast the testing result, the problem of gaseous detection accuracy has been reduced.
2. The utility model discloses a set up the gyration mirror, can be convenient for infrared light that first laser instrument and second laser instrument sent launches the beam splitter, through setting up the beam splitter, can carry out the beam splitting to infrared light, make it enter into in second mirror and the third mirror, through setting up the multiple reflection pond, can be convenient for make infrared light fully contact with the testing gas, through setting up the pressure gauge, can be convenient for detect the vacuum pressure of multiple reflection pond inside, through setting up the aspiration pump, be convenient for carry out the evacuation to multiple reflection pond inside, cooperation through current drive module and temperature control module is used, can be convenient for control first laser instrument and second laser instrument work and control its operating temperature, through setting up the lock phase amplification module, can be convenient for separate and amplify the signal that balanced detector sent, through setting up DAQ signal acquisition module, can be convenient for collect the signal that the lock phase amplification module sent, through setting up balanced detector, can survey two infrared light through first detecting head and second detection head.
Drawings
FIG. 1 is a flow chart of the present invention;
fig. 2 is a schematic diagram of the system of the present invention.
In the figure: 1. a first laser; 2. a second laser; 3. a turning mirror; 4. a beam splitter; 5. a third reflector; 6. an intake valve; 7. a multiple reflection cell; 8. an air outlet valve; 9. an air pump; 10. a pressure gauge; 11. a second probe head; 12. a fourth mirror; 13. a second reflector; 14. a first probe head; 15. a first reflecting mirror; 16. a lens; 17. an industrial personal computer; 18. a temperature control module; 19. a DAQ signal acquisition module; 20. a phase-locked amplifying module; 21. a balance detector; 22. and a current driving module.
Detailed Description
Referring to fig. 1-2, a gas experiment platform of laser spectroscopy includes a first laser 1, a second laser 2, and a lens 16, where a light-emitting end of the lens 16 is respectively provided with a first reflector 15 and a rotary mirror 3, a light-emitting end of the rotary mirror 3 is provided with a beam splitter 4, and a light-emitting end of the beam splitter 4 is respectively provided with a second reflector 13 and a third reflector 5;
a first detecting head 14 is arranged at the light emitting end of the second reflector 13, a multiple reflecting pool 7 is arranged at the light emitting end of the third reflector 5, a fourth reflector 12 is arranged at the light emitting end of the multiple reflecting pool 7, and a second detecting head 11 is arranged at the light emitting end of the fourth reflector 12;
the signal output ends of the first detecting head 14 and the second detecting head 11 are electrically connected with a balance detector 21, the output end of the balance detector 21 is electrically connected with a phase-locked amplifying module 20, the output end of the phase-locked amplifying module 20 is electrically connected with a DAQ signal acquisition module 19, the output end of the DAQ signal acquisition module 19 is electrically connected with an industrial personal computer 17, and the output end of the industrial personal computer 17 is respectively electrically connected with a current driving module 22 and a temperature control module 18.
In this embodiment: vacuumizing the multi-reflecting pool 7 in advance, injecting gas to be detected into the multi-reflecting pool 7, starting the first laser 1 and the second laser 2 through the industrial personal computer 17 after injection is finished, supplying power to the first laser 1 and the second laser 2 through the current driving module 22, controlling the heat dissipation mechanisms inside the first laser 1 and the second laser 2 to work through the industrial personal computer 17 to prevent the working temperature of the first laser 1 and the second laser 2 from being too high, transmitting infrared rays emitted by the first laser 1 and the second laser 2 to the first reflecting mirror 15 and the rotating mirror 3 through the lens 16, transmitting rays emitted by the second laser 2 into the rotating mirror 3 through the first reflecting mirror 15, transmitting two rays into the beam splitter 4 through the rotating mirror 3, splitting the beam splitter 4 again, enabling the two rays to enter the second reflecting mirror 13 and the third reflecting mirror 5 respectively, transmitting the second reflecting mirror 13 into the first reflecting mirror 14 through the second reflecting mirror 13, transmitting infrared rays into the second reflecting mirror 4, amplifying the infrared rays to the second reflecting signal through the second reflecting mirror 14, amplifying the infrared ray to the second reflecting signal transmission probe 14, transmitting the infrared ray to the second reflecting signal transmission probe 14, amplifying signal transmission to the second reflecting signal transmission probe 14, and transmitting the infrared signal transmission to the second reflecting gas detection probe 14, and amplifying signal transmission probe 14 through the second reflecting gas detection probe 14, and the staff calculates the content of the gaseous substance in the detection gas according to the two signals.
As a technical optimization scheme of the present invention, the light-emitting end of the first reflector 15 is disposed at the light-incident end of the turning mirror 3.
In this embodiment: the light-emitting end of the first reflector 15 is arranged at the light-emitting end of the rotary mirror 3, so that light emitted by the second laser 2 can be reflected into the rotary mirror 3, and the rotary mirror 3 can emit two beams of light into the beam splitter 4 to change the position of the light.
As a technical optimization scheme of the utility model, the inlet end intercommunication of multiple reflection pond 7 has admission valve 6.
In this embodiment: the air inlet end of the multiple reflection tank 7 is communicated with an air inlet valve 6, so that the detection gas can be conveniently added into the multiple reflection tank 7 through the air inlet valve 6, and the gas inside the multiple reflection tank 7 is prevented from leaking after the gas is added.
As a technical optimization scheme of the utility model, the end of giving vent to anger of multiple reflection pond 7 communicates respectively has pressure gauge 10 and air outlet valve 8, and the end intercommunication of giving vent to anger of air outlet valve 8 has aspiration pump 9.
In this embodiment: set up air outlet valve 8 and pressure gauge 10 respectively at the end of giving vent to anger of multiple reflection pond 7, pressure gauge 10 detects the inside pressure of multiple reflection pond 7, is convenient for carry out the evacuation to 7 inside portions of multiple reflection ponds, and air outlet valve 8 and aspiration pump 9 can be before 7 inside injection gas of multiple reflection ponds, and the gaseous testing result of influence is avoided to the gas of 7 inside portions of multiple reflection ponds of managing to find time.
As a technical optimization scheme of the utility model, the output of current drive module 22 and temperature control module 18 respectively with the input electric connection of first laser instrument 1 and second laser instrument 2.
In this embodiment: the output of current drive module 22 and temperature control module 18 respectively with first laser instrument 1 and second laser instrument 2's input electric connection, can supply power to first laser instrument 1 and second laser instrument 2, control first laser instrument 1 and second laser instrument 2 work, and carry out the independent control to the heat radiation structure of first laser instrument 1 and second laser instrument 2 inside, avoid the operating temperature of first laser instrument 1 and second laser instrument 2 too high to influence stability.
As a technical optimization scheme of the present invention, the lens 16 is disposed at the light emitting end of the first laser 1 and the second laser 2.
In this embodiment: the lens 16 is disposed at the light emitting ends of the first laser 1 and the second laser 2, and can concentrate infrared light to avoid diffusion thereof.
The working principle is as follows:
when the device is used, the multi-reflection pool 7 is vacuumized in advance, gas to be detected is injected into the multi-reflection pool 7, after the gas is injected, the first laser 1 and the second laser 2 are started through the industrial personal computer 17, the current driving module 22 supplies power to the first laser 1 and the second laser 2, the temperature control module 18 controls the heat dissipation mechanisms in the first laser 1 and the second laser 2 to work so as to prevent the working temperature of the first laser 1 and the second laser 2 from being too high, infrared light rays emitted by the first laser 1 and the second laser 2 enter the first reflector 15 and the rotary mirror 3 through the lens 16, the first reflector 15 emits rays emitted by the second laser 2 into the rotary mirror 3, the rotary mirror 3 emits two beams of light rays into the beam splitter 4, and the beam splitter 4 splits the light rays again, two beams of rays can enter a second reflector 13 and a third reflector 5 respectively, the second reflector 13 emits second infrared rays into a first detector head 14, the second infrared rays absorb gas substances in the air, the first detector head 14 detects the second infrared rays, the first infrared rays emitted by the third reflector 5 enter a multi-reflection pool 7 and are reflected for multiple times to absorb gaseous substances in the detected gas, the absorbed gaseous substances are emitted into a second detector head 11 through a fourth reflector 12, a balance detector 21 detects the light rays received by the first detector head 14 and the second detector head 11 respectively and transmits the detection result to a phase-locked amplification module 20, the phase-locked amplification module 20 separates and amplifies specific signals, a DAQ signal acquisition module 19 acquires the separated signals and transmits the signals to an industrial personal computer 17, the industrial personal computer 17 compares the two detection signals, and the staff calculates the content of the gaseous substance in the detection gas according to the two signals.
In conclusion: this gaseous experiment platform of laser spectrum technique, through first laser instrument 1, second laser instrument 2, gyration mirror 3, beam splitter 4, third speculum 5, many times of reflecting pool 7, second detecting head 11, fourth speculum 12, second speculum 13, first detecting head 14, first speculum 15, lens 16, industrial computer 17, temperature control module 18, DAQ signal acquisition module 19, lock-in amplification module 20, balanced detector 21 and current drive module 22's cooperation is used, the gaseous experiment platform who has solved present laser spectrum technique is in the in-process that uses, be not convenient for detect the gaseous material of air and detection gas simultaneously, and compare the testing result, the problem of gas detection accuracy has been reduced.
Claims (6)
1. A gas experiment platform of a laser spectrum technology comprises a first laser (1), a second laser (2) and a lens (16), wherein a light-emitting end of the lens (16) is respectively provided with a first reflecting mirror (15) and a rotary mirror (3), a light-emitting end of the rotary mirror (3) is provided with a beam splitter (4), and a light-emitting end of the beam splitter (4) is respectively provided with a second reflecting mirror (13) and a third reflecting mirror (5);
the method is characterized in that: a first detecting head (14) is arranged at the light emitting end of the second reflector (13), a multi-reflection pool (7) is arranged at the light emitting end of the third reflector (5), a fourth reflector (12) is arranged at the light emitting end of the multi-reflection pool (7), and a second detecting head (11) is arranged at the light emitting end of the fourth reflector (12);
the signal output part electric connection of first detecting head (14) and second detecting head (11) has balanced detector (21), the output electric connection of balanced detector (21) has lock phase amplification module (20), the output electric connection of lock phase amplification module (20) has DAQ signal acquisition module (19), the output electric connection of DAQ signal acquisition module (19) has industrial computer (17), the output difference electric connection of industrial computer (17) has current drive module (22) and temperature control module (18).
2. A gas experimental platform for laser spectroscopy according to claim 1, wherein: the light outlet end of the first reflector (15) is arranged at the light inlet end of the rotary mirror (3).
3. A gas experimental platform for laser spectroscopy as claimed in claim 1, wherein: and the air inlet end of the multiple reflection pool (7) is communicated with an air inlet valve (6).
4. A gas experimental platform for laser spectroscopy according to claim 1, wherein: the air outlet end of the multiple reflection cell (7) is respectively communicated with a pressure gauge (10) and an air outlet valve (8), and the air outlet end of the air outlet valve (8) is communicated with an air suction pump (9).
5. A gas experimental platform for laser spectroscopy as claimed in claim 1, wherein: the output ends of the current driving module (22) and the temperature control module (18) are respectively electrically connected with the input ends of the first laser (1) and the second laser (2).
6. A gas experimental platform for laser spectroscopy according to claim 1, wherein: the lens (16) is arranged at the light emitting ends of the first laser (1) and the second laser (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221550132.8U CN217766075U (en) | 2022-06-21 | 2022-06-21 | Gas experiment platform of laser spectrum technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221550132.8U CN217766075U (en) | 2022-06-21 | 2022-06-21 | Gas experiment platform of laser spectrum technology |
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| CN217766075U true CN217766075U (en) | 2022-11-08 |
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| CN202221550132.8U Active CN217766075U (en) | 2022-06-21 | 2022-06-21 | Gas experiment platform of laser spectrum technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116223450A (en) * | 2023-03-23 | 2023-06-06 | 中南大学 | Instrument and method for measuring concentration of transparent liquid |
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- 2022-06-21 CN CN202221550132.8U patent/CN217766075U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116223450A (en) * | 2023-03-23 | 2023-06-06 | 中南大学 | Instrument and method for measuring concentration of transparent liquid |
| CN116223450B (en) * | 2023-03-23 | 2024-03-19 | 中南大学 | Instrument and method for measuring concentration of transparent liquid |
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