CN203534951U - Single optical fiber transmission gas multiple-reflection tank detection device - Google Patents
Single optical fiber transmission gas multiple-reflection tank detection device Download PDFInfo
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- CN203534951U CN203534951U CN201320560171.0U CN201320560171U CN203534951U CN 203534951 U CN203534951 U CN 203534951U CN 201320560171 U CN201320560171 U CN 201320560171U CN 203534951 U CN203534951 U CN 203534951U
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Abstract
The utility model provides a single optical fiber transmission gas multiple-reflection tank detection device which comprises a laser, a detector, a circulator and a gas multiple-reflection tank, wherein the gas multiple-reflection tank comprises a polaroid and two collimators; the laser and the detector are connected with the light path of the polaroid through the circulator and a transmission optical fiber; the laser is used for outputting tuning laser with certain wavelength and the tuning laser is input into the polaroid through the circulator; light output from the polaroid is fed into the gas multiple-reflection tank through a first collimator, is reflected for multiple times inside the tank and is absorbed by sample gas; subsequently the output light of the gas multiple-reflection tank is fed into a second collimator, and is output to the polaroid through the second collimator; the light fed back from the polaroid is output to the detector through the circulator; the detector converts an optical signal with gas absorption information into an electric signal which is output. The device has the advantages and beneficial effects that the problem of interference when incident light and outgoing light with the same wavelength are transmitted through one same optical fiber is solved, and the purpose that the transmission and receiving of optical signals are accomplished by one same optical fiber is achieved.
Description
Technical field
The utility model relates to sniffer, particularly a kind of single fiber transport gas multiple reflecting pool sniffer.
Background technology
Along with developing rapidly of economical activities of mankind and production, in a large amount of consumption energy, also the polluters such as a large amount of industrial gaseous wastees, vehicle exhaust and soot dust granule are entered to atmosphere, cause the pollution of atmosphere.Prevent and remedy pollution, first will understand pollution, where correctly understand pollutant sources in, what composition is, amount has how many, and impact has much, how dark harm have, and only has everything is made carefully, conscientiously, after extensive investigations research, just can make way and the measure of control.Therefore, use gas multiple reflecting pool to monitor in real time ambient atmosphere, can understand and grasp the dynamic of constituent of atomsphere, the effect of playing monitoring and preventing and remedying pollution, significant to the protection of atmospheric environment.
Gas multiple reflecting pool to trace gas concentration testing process is: gas to be measured is passed into gas multiple reflecting pool.The tuning laser that laser instrument is exported certain specific wavelength incides gas multiple reflecting pool after collimating device collimation, in pond through multiple reflections and after the absorption of sample gas, output light is detected device and receives, detector is converted to electric signal by the light signal that carries gas absorption information, and input computing machine carries out subsequent treatment and analysis.
Gas multiple reflecting pool is the important step that gas detects, limitation due to self-technique, it is the interference problem of the incident of same Optical Fiber Transmission Same Wavelength and emergent ray, traditional gas multiple reflecting pool need to be by an Optical Fiber Transmission incident light, the electric signal of plain conductor transmission detector conversion, and cannot realize transmitting and the reception work that an optical fiber completes light signal.
Utility model content
The purpose of this utility model is exactly the above-mentioned defect that will overcome prior art, provides a kind of and can complete the single fiber transport gas multiple reflecting pool sniffer of transmitting and the reception of light signal by an optical fiber.
For achieving the above object, the single fiber transport gas multiple reflecting pool sniffer that the utility model provides, comprise laser instrument, detector and gas multiple reflecting pool, described gas multiple reflecting pool comprises pond body, in the body of pond, be provided with incident mirror and catoptron, also comprise circulator, described gas multiple reflecting pool also comprises polaroid and 2 collimating apparatuss, incident mirror is provided with into perforation and perforation hole, described laser instrument is connected with polaroid light path with Transmission Fibers through circulator with detector, first collimator is arranged in the output light path of polaroid, the second collimating apparatus is arranged in the input light path of polaroid, laser instrument is exported the tuning laser of certain specific wavelength through circulator input polarization sheet, the light of polaroid output is injected described gas multiple reflecting pool through first collimator by entering perforation, in pond through multiple reflections and after the absorption of sample gas, the output light of described gas multiple reflecting pool is injected the second collimating apparatus by perforation hole, through described the second collimating apparatus, export light to polaroid, the light that polaroid is passed back exports detector to through circulator, detector is converted to electric signal output by the light signal that carries gas absorption information.
The utility model single fiber transport gas multiple reflecting pool sniffer, wherein said gas multiple reflecting pool is Herriott pond, and place on incident mirror and mirror surface opposite, and two spherical mirrors different by radius-of-curvature form.
The utility model single fiber transport gas multiple reflecting pool sniffer, wherein said detector be connected with computing machine and by output electric signal transmission to computing machine.
Advantage and the good effect of the utility model single fiber transport gas multiple reflecting pool sniffer are: owing to adopting circulator, polaroid and 2 collimating apparatuss to carry out the improvement of gas multiple reflecting pool, solve the interference problem of the incident of same Optical Fiber Transmission Same Wavelength and emergent ray, realized the transmitting and the reception work that by an optical fiber, are completed light signal.
Below in conjunction with embodiment, with reference to accompanying drawing, be elaborated.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model single fiber transport gas multiple reflecting pool sniffer.
Embodiment
Below in conjunction with accompanying drawing, describe the embodiment of the utility model single fiber transport gas multiple reflecting pool sniffer in detail.
According to the selection absorption approach of gas molecule, gas molecule can only absorb the photon of difference of energy that those energy just in time equal its certain two energy level, and the gas of different molecular structures can absorb because of the different energy levels that its different structure determine the photon of different frequency.Gas molecule configurations, the absorption spectrum of gas with various is also different because of molecular structure, and the absorbing state that therefore detects certain special wavelength light can be carried out the qualitative and quantitative analysis of gas.
According to Beer-Lambert law: the monochromatic light that wavelength is λ through the long gas multiple reflecting pool for L after:
I
(1)=I
(0)exp[-α(λ)LC]
Wherein, I (0), I (1) are respectively incident and output intensity, and α (λ) is the absorption coefficient of gas to wavelength X light, and C is gas concentration, that is:
Ideally, if oneself knows the absorption coefficient of wavelength X light, by measuring the light intensity after gas absorption, can obtain the concentration C of gaseous sample to be measured.
With reference to Fig. 1, the utility model single fiber transport gas multiple reflecting pool sniffer comprises laser instrument 11, detector 12, circulator 10 and gas multiple reflecting pool 1.Gas multiple reflecting pool 1 comprises pond body, is provided with incident mirror 2 and catoptron 3 in the body of pond, and incident mirror 2 is provided with into perforation 4 and perforation hole 5.Gas multiple reflecting pool 1 also comprises polaroid 8 and 2 collimating apparatuss 6,7.
The comparatively simple Herriott of the optical system of gas multiple reflecting pool 1 pond, is comprised of two spherical mirrors.The incident mirror 2 that radius-of-curvature is different is placed face-to-face with catoptron 3, forms multiple reflections chamber.
In the embodiment of the utility model single fiber transport gas multiple reflecting pool sniffer, detector is connected with computing machine and the electric signal transmission of output to computing machine is carried out to subsequent treatment and analysis.
The utility model single fiber transport gas multiple reflecting pool sniffer, has solved the interference problem of the incident of same Optical Fiber Transmission Same Wavelength and emergent ray, realizes transmitting and reception work that an optical fiber completes light signal.
Embodiment recited above is described preferred implementation of the present utility model, not design of the present utility model and scope is limited.Do not departing under the prerequisite of the utility model design concept; various modification and improvement that this area ordinary person makes the technical solution of the utility model; all should drop into protection domain of the present utility model; the technology contents that the utility model is asked for protection, is all documented in claims.
Claims (3)
1. a single fiber transport gas multiple reflecting pool sniffer, comprise laser instrument (11), detector (12) and gas multiple reflecting pool (1), described gas multiple reflecting pool (1) comprises pond body, in the body of described pond, be provided with incident mirror (2) and catoptron (3), it is characterized in that: also comprise circulator (8), described gas multiple reflecting pool (1) also comprises polaroid (8) and 2 collimating apparatuss (6, 7), described incident mirror (2) is provided with into perforation (4) and perforation hole (5), described laser instrument (11) is connected with described polaroid (8) light path with Transmission Fibers (9) through described circulator (10) with detector (12), first collimator (6) is arranged in the output light path of described polaroid (8), the second collimating apparatus (7) is arranged in the input light path of described polaroid (8), the tuning laser of described laser instrument (11) output specific wavelength is inputted described polaroid (8) through described circulator (10), the light of described polaroid (8) output is entered perforation (4) and is injected described gas multiple reflecting pool (1) by described through described first collimator (6), in pond through multiple reflections and after the absorption of sample gas, the output light of described gas multiple reflecting pool (1) is injected described the second collimating apparatus (7) by described perforation hole (5), through described the second collimating apparatus (7), export light to described polaroid (8), the light that described polaroid (8) is passed back exports described detector (12) to through described circulator (10), described detector (12) is converted to electric signal output by the light signal that carries gas absorption information.
2. single fiber transport gas multiple reflecting pool sniffer according to claim 1, it is characterized in that: wherein said gas multiple reflecting pool (1) is Herriott pond, described incident mirror (2) is placed face-to-face with described catoptron (3), and two spherical mirrors different by radius-of-curvature form.
3. single fiber transport gas multiple reflecting pool sniffer according to claim 1 and 2, is characterized in that: wherein said detector (12) be connected with computing machine and by the electric signal transmission of output to described computing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320560171.0U CN203534951U (en) | 2013-09-09 | 2013-09-09 | Single optical fiber transmission gas multiple-reflection tank detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320560171.0U CN203534951U (en) | 2013-09-09 | 2013-09-09 | Single optical fiber transmission gas multiple-reflection tank detection device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471994A (en) * | 2013-09-09 | 2013-12-25 | 中国电子科技集团公司第八研究所 | Detection device for gas multi-reflect pool with single fiber transmission function |
| CN104034685A (en) * | 2014-06-24 | 2014-09-10 | 山东大学 | Enhanced absorption type gas detection system |
| CN104062251A (en) * | 2014-07-11 | 2014-09-24 | 刘颖东 | Optical fiber transmission type long-optical length laser gas sensor adopting space reflection structure |
| CN104315348A (en) * | 2014-10-14 | 2015-01-28 | 安徽皖仪科技股份有限公司 | Multiple-reflection optical path-based natural gas pipeline leakage vehicle-mounted detection equipment |
| WO2023168951A1 (en) * | 2022-03-07 | 2023-09-14 | 汉威科技集团股份有限公司 | Reflective optical system for long optical path gas absorption cell |
-
2013
- 2013-09-09 CN CN201320560171.0U patent/CN203534951U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471994A (en) * | 2013-09-09 | 2013-12-25 | 中国电子科技集团公司第八研究所 | Detection device for gas multi-reflect pool with single fiber transmission function |
| CN104034685A (en) * | 2014-06-24 | 2014-09-10 | 山东大学 | Enhanced absorption type gas detection system |
| CN104034685B (en) * | 2014-06-24 | 2017-02-15 | 山东大学 | Enhanced absorption type gas detection system |
| CN104062251A (en) * | 2014-07-11 | 2014-09-24 | 刘颖东 | Optical fiber transmission type long-optical length laser gas sensor adopting space reflection structure |
| CN104062251B (en) * | 2014-07-11 | 2018-06-26 | 刘颖东 | A kind of optical fibre transmission type long light path laser gas sensor using space reflection structure |
| CN104315348A (en) * | 2014-10-14 | 2015-01-28 | 安徽皖仪科技股份有限公司 | Multiple-reflection optical path-based natural gas pipeline leakage vehicle-mounted detection equipment |
| WO2023168951A1 (en) * | 2022-03-07 | 2023-09-14 | 汉威科技集团股份有限公司 | Reflective optical system for long optical path gas absorption cell |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20140409 |
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| CX01 | Expiry of patent term |