CN204832025U - Explosive gas atmosphere data acquisition and processing system - Google Patents
Explosive gas atmosphere data acquisition and processing system Download PDFInfo
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- CN204832025U CN204832025U CN201520376312.2U CN201520376312U CN204832025U CN 204832025 U CN204832025 U CN 204832025U CN 201520376312 U CN201520376312 U CN 201520376312U CN 204832025 U CN204832025 U CN 204832025U
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Abstract
The utility model discloses an explosive gas atmosphere data acquisition and processing system has solved photoelectric detector weak signal long distance transmission and the explosive atmosphere problem to the electric power restriction. But this system is technological based on tuning diode absorption spectrum, but including tuning diode laser instrument, 980nm laser instrument, 1310nm fiber laser, photoelectric detector, signal processing device and solar cell panel. Photoelectric detector receives through the characteristic signal that the search coverage carried tunable diode laser, and solar cell panel receives the light energy of 980nm laser instrument then converts the electric energy into and passes photoelectric detector's the signal of characteristic signal after light - electricity - light conversion back monitor by the optical cable and carry out data acquisition and processing and early warning for drive signal processing apparatus and 1310nm laser instrument, 1310nm laser instrument. Entire system adopts the optical cable to transmit, and laser instrument power supply and data acquisition and processing and early warning device place and is keeping away from on -the -spot monitor, have satisfied the demand of safety in production among the explosive atmosphere.
Description
Technical field
The utility model relates to damp detection field, is specially a kind of explosive gas atmosphere data acquisition processing system.
Background technology
Along with the requirement that country generates safety, some explosive gas atmospheres, such as natural gas extraction, coal mining, leakage monitoring and the early warning demand of liquefied gas station are more urgent, electrochemical process is mainly at present in the monitoring means in these fields, but the deficiency such as this method exists that response speed is slow, precision is low, may occur Sensor Poisoning and need periodic maintenance replacing, guarded region limited, and the use of these places to system has strict requirement of explosion proof.Therefore be starved of and a kind of there is high sensitivity, high resolving power, meet the gas-detecting device of requirement of explosion proof without the need to personnel's post.
Summary of the invention
The purpose of this utility model is to provide a kind of explosive gas atmosphere data acquisition processing system, and solution explosive atmosphere weak signal long range propagation and explosive atmosphere are to the technical matters of electrical power limit.
The utility model adopts following technical scheme to realize: a kind of explosive gas atmosphere data acquisition processing system, comprises tunable diode laser, 980nm laser instrument, 1310nm fiber laser, photodetector, signal processing apparatus, solar panel and terminal monitoring system; The exit ports of described tunable diode laser is connected with the first optical cable, photodetector is located at the exit ports of the first optical cable, the signal output part of photodetector is connected with the signal input part of signal processing apparatus, and the signal output part of signal processing apparatus is connected with the current input terminal of 1310nm fiber laser; 1310nm fiber laser is connected with terminal monitoring system by the 3rd optical cable; Described 980nm laser emitting end is incident to solar panel surface by the second optical cable, and described solar panel is powered to 1310nm fiber laser and signal processing apparatus.
The light that tunable diode laser and 980nm laser instrument send, receives to region to be measured through the photodetector of optical cable opposite side and solar panel respectively through optical cable transmission; Wherein the laser of tunable diode laser is being gathered by photodetector and is being converted to corresponding electric signal after the first optical cable outgoing after gas zones to be measured, the signal of signal processing apparatus to photodetector processes, then the electric signal after process is added to the current input terminal of 1310nm fiber laser, 1310nm fiber laser passes the terminal monitoring system in Control Room back after the characteristic signal entrained by photodetector is converted to light signal.
Then the luminous energy that solar panel receives 980nm laser instrument be converted to electric energy in order to drive singal treating apparatus and 1310nm fiber laser.
Further, described terminal monitoring system is made up of signal processing unit and warning system.Processing unit processes the signal that 1310nm fiber laser passes Control Room back, and judges data, rejects some singular values, carries out alert process to stable high concentrations data.The built-in comparison program of processing unit can complete and compare work to the gas concentration to be measured of input and original threshold, and when hazardous gas concentration is higher than threshold value, just send signal to warning system, warning system sends alerting signal.The process of data being carried out to discriminatory analysis belongs to existing known technology, and corresponding software is also existing known software.
Beam splitter can be utilized to carry out beam splitting to exploring laser light in region to be measured, and then realize monitoring all standing in region, the micro-leakage of optional position, whole region can be monitored, and early warning is carried out to leakage, ensure that the security of producing in hazardous environment.
The utility model can carry out covering monitoring to whole explosive gas atmosphere region, comprise the high risk zone that people can not arrive, and whole system adopts optical cable to transmit signal, only need weak current to carry out electro-optic conversion, data processing and warning system are placed on the guarded region away from blast area.This system is based on tunable diode absorption spectroscopy techniques, utilize semiconductor laser narrow linewidth, fast tuning characteristic, the quick detection to gas concentration is realized by the individual absorption line scanning object gas, there is high resolving power, high sensitivity and non-intruding characteristic, can install very easily, unattended duty, convenient later maintenance, more than 10 years continuous serviceable life.
Accompanying drawing explanation
Fig. 1 the utility model structural representation.
1-tunable diode laser, 2-980nm laser instrument, 3-1310nm fiber laser, 4-photodetector, 5-signal processing apparatus, 6-solar panel, 7-terminal monitoring system, 8-first optical cable, 9-second optical cable, 10-the 3rd optical cable, 11-region to be measured.
Embodiment
A kind of explosive gas atmosphere data acquisition processing system, comprises tunable diode laser 1,980nm laser instrument 2,1310nm fiber laser 3, photodetector 4, signal processing apparatus 5, solar panel 6 and terminal monitoring system 7; The exit ports of described tunable diode laser 1 is connected with the first optical cable 8, photodetector 4 is located at the exit ports of the first optical cable 8, the signal output part of photodetector 4 is connected with the signal input part of signal processing apparatus 5, and the signal output part of signal processing apparatus 5 is connected with the current input terminal of 1310nm fiber laser 3; 1310nm fiber laser 3 is connected with terminal monitoring system 8 by the 3rd optical cable 10; Described 980nm laser instrument 2 exit end is incident to solar panel 6 surface by the second optical cable 9, and described solar panel 6 is powered to 1310nm fiber laser 3 and signal processing apparatus 5.
The warning system that terminal monitoring system 8 comprises processing unit and is connected with processing unit.
Fig. 1 is structural representation of the present utility model.
Whole system is only transmitted signal by optical cable, exploring laser light passes to region to be measured through optical fiber, photodetector is converted to light signal again and passes Control Room back after receiving detectable signal, 1310nm fiber laser and signal processing apparatus, by solar powered, solve the restriction of explosive atmosphere to electric power.
Described tunable diode is modulated it by sawtooth wave, it is made to export the continuous laser changed according to sawtooth wave rule, scan gas whole piece to be measured to absorb, detector and signal processing apparatus process the absorption signal received, and native system can detect hazardous gas concentration value in industrial generative process fast and accurately.
Claims (3)
1. an explosive gas atmosphere data acquisition processing system, it is characterized in that: comprise tunable diode laser (1), 980nm laser instrument (2), 1310nm fiber laser (3), photodetector (4), signal processing apparatus (5), solar panel (6) and terminal monitoring system (7); The exit ports of described tunable diode laser (1) is connected with the first optical cable (8), photodetector (4) is located at the exit ports of the first optical cable (8), the signal output part of photodetector (4) is connected with the signal input part of signal processing apparatus (5), and the signal output part of signal processing apparatus (5) is connected with the current input terminal of 1310nm fiber laser (3); 1310nm fiber laser (3) is connected with terminal monitoring system (8) by the 3rd optical cable (10); Described 980nm laser instrument (2) exit end is incident to solar panel (6) surface by the second optical cable (9), and described solar panel (6) is to 1310nm fiber laser (3) and signal processing apparatus (5) power supply.
2. explosive gas atmosphere data acquisition processing system according to claim 1, is characterized in that the warning system that terminal monitoring system (7) comprises processing unit and is connected with processing unit.
3. explosive gas atmosphere data acquisition processing system according to claim 1 and 2, is characterized in that described tunable diode laser (1) is modulated it by sawtooth wave, makes it export the continuous laser changed according to sawtooth wave rule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520376312.2U CN204832025U (en) | 2015-06-03 | 2015-06-03 | Explosive gas atmosphere data acquisition and processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520376312.2U CN204832025U (en) | 2015-06-03 | 2015-06-03 | Explosive gas atmosphere data acquisition and processing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204832025U true CN204832025U (en) | 2015-12-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520376312.2U Expired - Fee Related CN204832025U (en) | 2015-06-03 | 2015-06-03 | Explosive gas atmosphere data acquisition and processing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204832025U (en) |
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2015
- 2015-06-03 CN CN201520376312.2U patent/CN204832025U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20190603 |