CN205538668U - Laser gas ray apparatus signal conditioning system - Google Patents
Laser gas ray apparatus signal conditioning system Download PDFInfo
- Publication number
- CN205538668U CN205538668U CN201620335501.XU CN201620335501U CN205538668U CN 205538668 U CN205538668 U CN 205538668U CN 201620335501 U CN201620335501 U CN 201620335501U CN 205538668 U CN205538668 U CN 205538668U
- Authority
- CN
- China
- Prior art keywords
- laser
- condenser lens
- regulating block
- fresnel condenser
- fixed
- 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.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a laser gas ray apparatus signal conditioning system has solved present laser gas and has detected the unsafe technical problem of ray apparatus signal conditioning. But this system carries out the signal modulation based on the tuning diode absorption spectrum technique to the laser instrument, and its system includes laser gas ray apparatus module, master control STM32, but tuning diode laser instrument and drive arrangement, fixed gain amplifier circuit, photoelectric detector, oscilloscope. Wherein chargeable call group supplies power to master control STM32, tunable diode laser and drive arrangement, fixed gain amplifier circuit. But the laser that tuning diode sent is through the wall diffuse reflection, returns back photoelectric detector by the fresnel focusing lens focused light of opposite side and receives, and fixed gain amplifier circuit enlargies and handles access oscilloscope, can adjust optimum signal intensity.
Description
Technical field
This utility model relates to ray machine Signal Regulation technology, is specially a kind of laser gas ray machine signal conditioning system.
Background technology
Along with tunable diode laser absorption spectroscopy (Tunable Diode Laser
Absorption Spectroscopy) development of gas detection technology, its method has highly sensitive, high-resolution and the quick advantage such as response, is widely applied in gas detecting.Along with the huge increasing of Natural gas consumption, the laying quantity overall length of natural gas underground and surface pipeline network have also exceeded 70,000 kilometers.Pipeline is big due to span, safeguards relatively difficult, is caused natural gas leaking accident also to happen occasionally by natural disaster or anthropic factor.Elapsing over time, natural-gas transfer pipeline ageing rate increases, and is monitored natural gas leaking and the demand reported to the police is the most urgent.
Tradition bare engine module regulation is carried out in the place of dark, uses red laser pen to be linked in collimator, watches the focus of Fresnel condenser lens, then be adjusted in focus by detector.But the wave band of red laser pen is at 650nm, and detecting methane laser band at 1654nm, wave band difference is relatively big, and hot spot also differs, and causes bare engine module Signal Regulation non-optimal, it will reduce Signal Regulation intensity.
In addition, in the local regulation light path of dark, having a lot of uncontrollable factor, the focus of Fresnel lens is not fixed in the focus of the reverberation of different distances, as long as with instruction light adjusting deviation a bit, it is possible to cause detectable signal to be lost completely.
The adjusting means of ray machine signal can be carried out, guarantee that the photosignal that diffuse-reflectance is returned focuses on the detector all the time hence it is highly desirable to a kind of at complex environment.
Summary of the invention
This utility model is that the bare engine module solved in current Diode Laser Absorption Spectroscopy exists coarse technical problem when being adjusted, it is provided that a kind of laser gas ray machine signal conditioning system.
This utility model adopts the following technical scheme that realization: a kind of laser gas ray machine signal conditioning system, including microprocessor, tunable diode laser and drive circuit for laser, photodetector, fixed gain amplifying circuit, rechargeable battery pack, Fresnel condenser lens light machine barrel and oscillograph；Described Fresnel condenser lens light machine barrel includes the cylinder of a both ends open and is fixed on the Fresnel condenser lens at cylinder one end open, and the internal position near Fresnel condenser lens of Fresnel condenser lens light machine barrel is fixed with the Laser emission collimator that an emitting light path is coaxial and outside with Fresnel condenser lens primary optical axis；It is fixed with a D translation platform inside Fresnel condenser lens light machine barrel；Described photodetector is installed on the movable end of D translation platform and its receiving terminal is towards Fresnel condenser lens side；The signal output part of described microprocessor is connected with the signal input part of drive circuit for laser, and the signal output part of photodetector is connected with microprocessor and oscillographic signal input part respectively by fixed gain amplifying circuit；Microprocessor, drive circuit for laser and fixed gain amplifying circuit are all powered by rechargeable battery pack.
Microprocessor uses master control STM32.
The laser that laser instrument sends accesses on Fig. 1 Laser emission collimator, laser is through metope diffuse-reflectance, return photodetector by Fig. 1 Fresnel condenser lens after being focused on to be received, photodetector connects fixed gain amplifying circuit, the modulated signal that laser instrument is launched will be received, signal is checked by oscillograph, may determine that the signal intensity that laser signal is returned through diffuse-reflectance, X to ray machine D translation platform respectively, Y, Z-axis direction is mediated, such as X-axis is regulated by regulation X-axis regulation bolt, Y-axis is regulated by regulation Y-axis regulation bolt, Z axis is regulated by regulation Z axis regulation bolt, every pair of axle is adjusted all having signal to change from weak to strong, by the process died down by force, being adjusted to three direction of principal axis is all that the strongest position carries out joint debugging again, reaffirm that signal is peak signal.
Described ray machine adjusts arrangement works block diagram as in figure 2 it is shown, rechargeable battery pack is powered to circuits below: master control STM32, drive circuit for laser, fixed gain amplifying circuit.Drive circuit for laser drives tunable diode laser to launch laser to metope, wherein laser instrument launches laser and Fresnel condenser lens coaxial transmitting, the laser that laser instrument is launched is received by Fresnel condenser lens light machine barrel by diffuse-reflectance, light diffuse-reflectance returned by regulation D translation platform is received by photodetector, amplified by fixed gain amplifying circuit, carried out data process by master control STM32 again and signal checked by oscillograph, it is achieved that the regulation of ray machine signal.
The utility model discloses a kind of laser gas ray machine signal conditioning system.The regulation of laser signal ray machine signal can be carried out at complex environment.This system, based on tunable diode absorption spectroscopy techniques, utilizes semiconductor laser narrow linewidth, quick tuning characteristic, receives signal by detector and fixes processing and amplifying, can regulate the Optimal Signals determining ray machine signal, it is ensured that signal is located on the detector all the time.
Accompanying drawing explanation
Fig. 1 this utility model internal structure schematic diagram.
Fig. 2 operation principle of the present utility model block diagram.
1-rechargeable battery pack, 2-microprocessor, 3-drive circuit for laser, 4-tunable diode laser, 5-Fresnel condenser lens light machine barrel, 6-Fresnel condenser lens, 7-photodetector, 8-fixed gain amplifying circuit, 9-oscillograph, 10-Laser emission collimator, 11-collimator fixes seat, 12-collimator fixes seat regulation bolt, 13-base plate, 14-detector fixes seat, 15-X axle mobile platform, 16-the first contiguous block, 17-Y axle mobile platform, 18-the second contiguous block, 19-the 3rd contiguous block, 20-Z axle mobile station, 21-X axle regulation bolt, 22-Y axle regulation bolt, 23-Z axle regulation bolt.
Detailed description of the invention
A kind of laser gas ray machine signal conditioning system, including microprocessor 2, tunable diode laser 4 and drive circuit for laser 3, photodetector 7, fixed gain amplifying circuit 8, rechargeable battery pack 1, Fresnel condenser lens light machine barrel 5 and oscillograph 9；Described Fresnel condenser lens light machine barrel 5 includes the cylinder of a both ends open and is fixed on the Fresnel condenser lens 6 at cylinder one end open, and the internal position near Fresnel condenser lens 6 of Fresnel condenser lens light machine barrel 5 is fixed with the Laser emission collimator 10 that an emitting light path is coaxial and outside with Fresnel condenser lens 6 primary optical axis；Fresnel condenser lens light machine barrel 5 is internal is fixed with a D translation platform；Described photodetector 7 is installed on the movable end of D translation platform and its receiving terminal is towards Fresnel condenser lens 6 side；The signal output part of described microprocessor 2 is connected with the signal input part of drive circuit for laser 3, the signal output part of photodetector 7 by fixed gain amplifying circuit 8 respectively signal input part with microprocessor 2 and oscillograph 9 be connected；Microprocessor 2, drive circuit for laser 3 and fixed gain amplifying circuit 8 are all powered by rechargeable battery pack 1.
Microprocessor 2 uses master control STM32.
Described Laser emission collimator 10 is fixed seat 11 by collimator and is located at inside Fresnel condenser lens light machine barrel 5；Collimator is fixed seat 11 and is provided with up-down adjustment mechanism and is connected with Laser emission collimator 10 by up-down adjustment mechanism.Fix seat regulation bolt 12 by collimator and regulate the position of Laser emission collimator 10.
Described D translation platform includes being horizontally fixed on the base plate 13 bottom Fresnel condenser lens light machine barrel 5 inwall；Also include the X-axis regulating block installed on base 13, X-axis regulating block is provided with Y-axis regulating block, Y-axis regulating block is provided with Z axis regulating block；Described photodetector 7 is fixed seat 14 by detector and is arranged on Z axis regulating block；Described X-axis regulating block, Y-axis regulating block, Z axis regulating block all use screw-nut body to realize the most axial position adjustments.
It is modulated by tunable diode laser by sawtooth waveforms, it is made to export the continuous laser according to the change of sawtooth waveforms rule, laser is linked into coaxially (off axis) in ray machine adjusting means, the signal received is amplified processing by detector and fixed gain amplifying circuit, and native system can simplify laser ray machine Signal Regulation.
The signal that the laser diffusion sent is returned by described fixed gain amplifying circuit is fixed amplification, can form a standard by identical mechanical-optical setup, and laser fiber head connects optical fiber flange, adds that protection emits, and laser fiber can be protected injury-free.
Can arrange slide rail on base plate 13, described X-axis regulating block includes the X-axis screw-nut body installed on base 13 and is arranged on the X-axis mobile platform 15 on X-axis screw-nut body leading screw；X-axis mobile platform 15 can slide along slide rail simultaneously；X-axis screw-nut body is installed on base 13 by the first contiguous block 16；Described Y-axis regulating block includes the Y-axis screw-nut body being arranged on X-axis mobile platform 15 upper surface and is arranged on the Y-axis mobile platform 17 on Y-axis screw-nut body leading screw；Described Y-axis screw-nut body is arranged on X-axis mobile platform 15 by the second contiguous block 18；Also include the 3rd contiguous block 19 being vertically fixed on Y-axis mobile platform 17；Described Z axis regulating block includes the Z axis leading screw and nut mechanism being arranged on the 3rd contiguous block 19 vertical plane and is arranged on the Z axis mobile station 20 on Z axis leading screw and nut mechanism leading screw；Described photodetector 7 is fixed seat 14 by detector and is arranged in Z axis mobile station 20；X-axis regulation bolt 21, Y-axis regulation bolt 22, Z axis regulation bolt 23 are respectively used to regulate X-axis screw-nut body leading screw, Y-axis screw-nut body leading screw and the movement of Z axis screw-nut body leading screw.
Claims (4)
1. a laser gas ray machine signal conditioning system, it is characterized in that, including microprocessor (2), tunable diode laser (4) and drive circuit for laser (3), photodetector (7), fixed gain amplifying circuit (8), rechargeable battery pack (1), Fresnel condenser lens light machine barrel (5) and oscillograph (9)；Described Fresnel condenser lens light machine barrel (5) includes the cylinder of a both ends open and is fixed on the Fresnel condenser lens (6) at cylinder one end open, and the internal position near Fresnel condenser lens (6) of Fresnel condenser lens light machine barrel (5) is fixed with the Laser emission collimator (10) that an emitting light path is coaxial and outside with Fresnel condenser lens (6) primary optical axis；Fresnel condenser lens light machine barrel (5) is internal is fixed with a D translation platform；Described photodetector (7) is installed on the movable end of D translation platform and its receiving terminal is towards Fresnel condenser lens (6) side；The signal output part of described microprocessor (2) is connected with the signal input part of drive circuit for laser (3), the signal output part of photodetector (7) by fixed gain amplifying circuit (8) respectively signal input part with microprocessor (2) and oscillograph (9) be connected；Microprocessor (2), drive circuit for laser (3) and fixed gain amplifying circuit (8) are all powered by rechargeable battery pack (1).
2. laser gas ray machine signal conditioning system as claimed in claim 1, it is characterised in that microprocessor (2) uses master control STM32.
3. laser gas ray machine signal conditioning system as claimed in claim 1 or 2, it is characterised in that described Laser emission collimator (10) is fixed seat (11) by collimator and is located at Fresnel condenser lens light machine barrel (5) internal；Collimator is fixed seat (11) and is provided with up-down adjustment mechanism and is connected with Laser emission collimator (10) by up-down adjustment mechanism.
4. laser gas ray machine signal conditioning system as claimed in claim 3, it is characterised in that described D translation platform includes being horizontally fixed on the base plate (13) bottom Fresnel condenser lens light machine barrel (5) inwall；Also include the X-axis regulating block being arranged on base plate (13), X-axis regulating block is provided with Y-axis regulating block, Y-axis regulating block is provided with Z axis regulating block；Described photodetector (7) is fixed seat (14) by detector and is arranged on Z axis regulating block；Described X-axis regulating block, Y-axis regulating block, Z axis regulating block all use screw-nut body to realize the most axial position adjustments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620335501.XU CN205538668U (en) | 2016-04-20 | 2016-04-20 | Laser gas ray apparatus signal conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620335501.XU CN205538668U (en) | 2016-04-20 | 2016-04-20 | Laser gas ray apparatus signal conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205538668U true CN205538668U (en) | 2016-08-31 |
Family
ID=56795867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620335501.XU Expired - Fee Related CN205538668U (en) | 2016-04-20 | 2016-04-20 | Laser gas ray apparatus signal conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205538668U (en) |
-
2016
- 2016-04-20 CN CN201620335501.XU patent/CN205538668U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109450562B (en) | System and method for testing comprehensive performance of off-axis dual-waveband laser communication | |
| CN103278893B (en) | Terahertz wave emitting/receiving integration module | |
| CN102707331B (en) | Receiving and transmitting integrated sub-nanosecond pulse laser detection system based on polarization | |
| CN104121805B (en) | A kind of shooting lane space reference device and control method thereof | |
| CN109802293B (en) | Laser external indicating light safe leading-in system and method | |
| CN103399413A (en) | Double helix light beam-based sample axial drift detection and compensation method and device | |
| CN203365739U (en) | Terahertz wave transmitting/receiving integration module | |
| CN105021526A (en) | Laser gas analyzer with automatic light path alignment function | |
| CN103398976B (en) | Reflective open circuit laser gas detection system | |
| CN205538668U (en) | Laser gas ray apparatus signal conditioning system | |
| CN103078248B (en) | A kind of high-power semiconductor laser beam collimation method of adjustment and device | |
| CN103792070A (en) | Semiconductor laser array optical characteristic detection device | |
| CN205958454U (en) | Dangerous gas monitoring device that leaks of reflective infrared laser industry of self -adaptation | |
| CN202406334U (en) | Rapid automatic temperature compensating and driving module of superradiation light emitting diode | |
| CN201255720Y (en) | Optical measurement device for bug dust | |
| CN111896939A (en) | Laser radar light source detection device | |
| CN201662392U (en) | Photoelectric detection device for steel ball surface quality | |
| CN107976632B (en) | Photoelectric conversion efficiency testing device and method | |
| CN209264249U (en) | A kind of test of light source device | |
| CN108458751A (en) | Multi-parameter measuring systems based on remote power feeding and wireless data transmission | |
| CN201429565Y (en) | Optical fiber semiconductor laser gas analyzer | |
| JP2014099260A (en) | Solar simulator | |
| CN210430410U (en) | Single-mode single-frequency high-optical-power semiconductor laser light source for monitoring wind speed | |
| CN203414407U (en) | Reflective open circuit laser gas detecting system | |
| CN107833511B (en) | Optimization integrated double-light-path laser ionization effect simulation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20210420 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |