CN103822882A - Quasi-distribution type gas concentration detector - Google Patents
Quasi-distribution type gas concentration detector Download PDFInfo
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- CN103822882A CN103822882A CN201210466590.8A CN201210466590A CN103822882A CN 103822882 A CN103822882 A CN 103822882A CN 201210466590 A CN201210466590 A CN 201210466590A CN 103822882 A CN103822882 A CN 103822882A
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Abstract
The invention discloses a quasi-distribution type gas concentration detector. The quasi-distribution type gas concentration detector comprises a control treating module, a light source module, a receiving module, an optical fiber, a self-focusing lens, a vessel, a vibration sensor, a processing chip, an optical sending module, a battery and a 2*1 coupler II, wherein the control treating module is connected with the light source module, the optical fiber is provided with a plurality of 1*2 couplers I, the self-focusing lens is arranged at the tail end at a branch outlet of each 1*2 coupler I and is installed on the vessel, a plurality of through holes are formed in the side wall of the vessel, the vibration sensor is installed at the bottom of the vessel and is connected with the processing chip, the battery and the optical sending module are connected with the processing chip, the optical sending module is connected with the 2*1 coupler II by virtue of the optical fiber, the outlet end of the 2*1 coupler II is connected with the receiving module by virtue of the optical fiber, and the receiving module is connected with the control treating module. The quasi-distribution type gas concentration detector can resist the vibration, dusts and pollution, is high in the accuracy and low in the cost, and is in a quasi-distribution type.
Description
Technical field
The present invention relates to a kind of optical fiber gas sensing device, especially relate to a kind of quasi-distributed gas concentration detection apparatus.
Background technology
In colliery, the place such as chemical plant, air shooter line needs the variation of gas-monitoring concentration, the particularly monitoring of poisonous and harmful and inflammable and explosive gas concentration, generally need distributed or quasi-distributed monitoring device, but existing monitoring device is take point type monitoring device as main, and distributed or quasi-distributed device is less.On the other hand, because a lot of gas to be monitored belongs to flammable explosive gas, and existing monitoring device majority is electrical type monitoring instrument, still has certain defect and hidden danger aspect anti-electromagnetic interference (EMI) and anti-explosion safety.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency of the prior art, a kind of quasi-distributed gas concentration detection apparatus is provided, adopt take Fibre Optical Sensor as main technology, reduce cost, reduce technical difficulty, also adopt portions of electronics sensing device, make that whole detection system development difficulty is little, cost is low.
For achieving the above object, the technical solution used in the present invention is: a kind of quasi-distributed gas concentration detection apparatus, it is characterized in that: comprise control processing module, light source module, accept module, optical fiber, GRIN Lens, container, vibration transducer, process chip, optical transmission module, battery and 2X1 coupling mechanism two, described control processing module and light source module join and control that light source module sends light signal and by sent light signal coupled into optical fibres, on described optical fiber, be provided with a plurality of 1X2 coupling mechanisms one, described GRIN Lens is positioned at the end of an outlet of 1X2 coupling mechanism one, described GRIN Lens is arranged on container and light signal is entered in container, on the sidewall of described container, have and allow surrounding environment gas to be measured to free in and out its inner plurality of through holes, described vibration transducer is arranged on the bottom of container and the vibration for detection of container, described vibration transducer and process chip are joined and the vibration information of detection are passed to process chip and processed by process chip, described battery and process chip are joined and process chip are powered, described optical transmission module and process chip are joined and the vibration information of process chip transmission are converted into light signal and are returned to and accepted module by optical fiber and 2X1 coupling mechanism two, described optical transmission module is connected with 2X1 coupling mechanism two by optical fiber, the endpiece of described 2X1 coupling mechanism two by optical fiber with accept module and be connected, describedly accept module and control that processing module is joined and the light signal receiving is converted into electrical signal transfer to controlling processing module by the concentration of controlling processing module analyzing and processing and obtain gas to be measured.
Above-mentioned quasi-distributed gas concentration detection apparatus, is characterized in that: the wavelength of the light signal that described light source module sends has covered the absorbing wavelength of gas to be measured.
Above-mentioned quasi-distributed gas concentration detection apparatus, is characterized in that: the frequency coverage of the light signal that described light source module sends the resonant frequency of container.
Above-mentioned quasi-distributed gas concentration detection apparatus, is characterized in that: described container is rustless steel container or quartz container.
Above-mentioned quasi-distributed gas concentration detection apparatus, is characterized in that: described vibration transducer is microphone sensor.
The present invention compared with prior art has the following advantages:
1, the present invention adopts take Fibre Optical Sensor as main technology, has reduced cost, has reduced technical difficulty, also adopts portions of electronics sensing device, makes that whole detection system development difficulty is little, cost is low.
2, the present invention's distributed gas concentration detection apparatus that is as the criterion, has adopted the optoacoustic spectroscopy gas of existing maturation to detect, and have advantages of that anti-vibration, anti-dust, antipollution, precision are high, and whole system cost is low, quasi-distributed, is easy to promote.
3, the present invention is simple in structure, volume is little, is easy to realize.
Below by drawings and Examples, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Description of reference numerals:
1-control processing module; 2-light source module; 3-accept module;
4-1X2 coupling mechanism one; 5-2X1 coupling mechanism two; 6-optical fiber;
7-GRIN Lens; 8-container; 9-through hole;
10-vibration transducer; 11-process chip; 12-optical transmission module;
15-battery.
Embodiment
As shown in Figure 1, the present invention includes and control processing module 1, light source module 2, accept module 3, optical fiber 6, GRIN Lens 7, container 8, vibration transducer 10, process chip 11, optical transmission module 12, battery 15 and 2X1 coupling mechanism 25, described control processing module 1 is joined with light source module 2 and is controlled that light source module 2 sends light signal and by sent light signal coupled into optical fibres 6, on described optical fiber 6, be provided with a plurality of 1X2 coupling mechanisms 1, described GRIN Lens 7 is positioned at the end of an outlet of 1X2 coupling mechanism 1, described GRIN Lens 7 is arranged on container 8 and light signal is entered in container 8, on the sidewall of described container 8, have and allow surrounding environment gas to be measured to free in and out its inner plurality of through holes 9, described vibration transducer 10 is arranged on the bottom of container 8 and the vibration for detection of container 8, described vibration transducer 10 joins and the vibration information of detection is passed to process chip 11 with process chip 11 and processed by process chip 11, described battery 15 joins and process chip 11 is powered with process chip 11, described optical transmission module 12 joins with process chip 11 and vibration information that process chip 11 is transmitted is converted into light signal and is returned to and accepted module 3 by optical fiber 6 and 2X1 coupling mechanism 25, described optical transmission module 12 is connected with 2X1 coupling mechanism 25 by optical fiber 6, the endpiece of described 2X1 coupling mechanism 25 by optical fiber 6 with accept module 3 and be connected, describedly accept module 3 and control that processing module 1 is joined and the light signal receiving is converted into electrical signal transfer to controlling processing module 1 by the concentration of controlling processing module 1 analyzing and processing and obtain gas to be measured.
In the present embodiment, preferred, the wavelength of the light signal that described light source module 2 sends has covered the absorbing wavelength of gas to be measured.
In the present embodiment, preferred, the frequency coverage of the light signal that described light source module 2 sends the resonant frequency of container (8), thereby make vibration transducer 10 can obtain stronger signal.
In the present embodiment, preferred, described container 8 is rustless steel container or quartz container.
In the present embodiment, preferred, described vibration transducer 10 is microphone sensor, and microphone sensor has that cost is low, highly sensitive, the little feature of volume, is particularly suitable for the detection of micro-vibration signal.
The course of work of the present invention is: control processing module 1 is controlled light source module 2 and sent in light signal coupled into optical fibres 6, because the end of an outlet optical fiber 6 at 1X2 coupling mechanism 1 is mounted with GRIN Lens 7, GRIN Lens 7 is placed on container 8, therefore light signal enters in container 8 by GRIN Lens 7, be provided with plurality of through holes 9 in the side of container 8, gas to be measured is promoted and is diffused into container 8 inside, because the wavelength of light signal is coated with the absorbing wavelength of gas to be measured, thereby make the interior generation vibration of container 8.Preferably, the transmission frequency of light signal has covered the resonant frequency of container 8, thereby can make container 8 produce resonance, make to be mounted with vibration transducer 10 in the bottom of container 8 and can capture stronger vibration signal, and this information is converted into telecommunications breath passes to process chip 11, process chip 11 passes to again optical transmission module 12, optical transmission module 12 is converted into light signal by vibration information and is returned to and accepted module 3 by optical fiber 6 and 2X1 coupling mechanism 25, accept module 3 this information is converted into electrical signal transfer to controlling processing module 1 so that control processing module 1 analyzing and processing obtains the concentration of gas to be measured, process chip 11 also can be back to control processing module 1 by its numbering or positional information, to draw the gas concentration to be measured in different positions.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification, change and equivalent structure transformation of above embodiment being done according to the technology of the present invention essence, all still belongs in the protection domain of technical solution of the present invention.
Claims (5)
1. a quasi-distributed gas concentration detection apparatus, it is characterized in that: comprise and control processing module (1), light source module (2), accept module (3), optical fiber (6), GRIN Lens (7), container (8), vibration transducer (10), process chip (11), optical transmission module (12), battery (15) and 2X1 coupling mechanism two (5), described control processing module (1) and light source module (2) join and control that light source module (2) sends light signal and by sent light signal coupled into optical fibres (6), on described optical fiber (6), be provided with a plurality of 1X2 coupling mechanisms one (4), described GRIN Lens (7) is positioned at the end of an outlet of 1X2 coupling mechanism one (4), described GRIN Lens (7) is arranged on container (8) above and light signal is entered in container (8), on the sidewall of described container (8), have and allow surrounding environment gas to be measured to free in and out its inner plurality of through holes (9), described vibration transducer (10) is arranged on the bottom of container (8) and the vibration for detection of container (8), described vibration transducer (10) joins and the vibration information of detection is passed to process chip (11) with process chip (11) and processed by process chip (11), described battery (15) joins and process chip (11) is powered with process chip (11), described optical transmission module (12) joins with process chip (11) and the vibration information of process chip (11) transmission is converted into light signal and is returned to and accepted module (3) by optical fiber (6) and 2X1 coupling mechanism two (5), described optical transmission module (12) is connected with 2X1 coupling mechanism two (5) by optical fiber (6), the endpiece of described 2X1 coupling mechanism two (5) by optical fiber (6) with accept module (3) and be connected, describedly accept module (3) and control that processing module (1) is joined and the light signal receiving is converted into electrical signal transfer to controlling processing module (1) by the concentration of controlling processing module (1) analyzing and processing and obtain gas to be measured.
2. quasi-distributed gas concentration detection apparatus according to claim 1, is characterized in that: the wavelength of the light signal that described light source module (2) sends has covered the absorbing wavelength of gas to be measured.
3. quasi-distributed gas concentration detection apparatus according to claim 1, is characterized in that: the frequency coverage of the light signal that described light source module (2) sends the resonant frequency of container (8).
4. according to the quasi-distributed gas concentration detection apparatus described in claim 1,2 or 3, it is characterized in that: described container (8) is rustless steel container or quartz container.
5. according to the quasi-distributed gas concentration detection apparatus described in claim 1,2 or 3, it is characterized in that: described vibration transducer (10) is microphone sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210466590.8A CN103822882A (en) | 2012-11-16 | 2012-11-16 | Quasi-distribution type gas concentration detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210466590.8A CN103822882A (en) | 2012-11-16 | 2012-11-16 | Quasi-distribution type gas concentration detector |
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| CN103822882A true CN103822882A (en) | 2014-05-28 |
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| CN201210466590.8A Pending CN103822882A (en) | 2012-11-16 | 2012-11-16 | Quasi-distribution type gas concentration detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470630A (en) * | 2018-05-11 | 2019-11-19 | 西安电子科技大学 | A kind of distribution type fiber-optic gas sensor based on difference modes |
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- 2012-11-16 CN CN201210466590.8A patent/CN103822882A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470630A (en) * | 2018-05-11 | 2019-11-19 | 西安电子科技大学 | A kind of distribution type fiber-optic gas sensor based on difference modes |
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Application publication date: 20140528 |