CN2124473U - Optical fibre type co detecting and alarm device - Google Patents
Optical fibre type co detecting and alarm device Download PDFInfo
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- CN2124473U CN2124473U CN 92215656 CN92215656U CN2124473U CN 2124473 U CN2124473 U CN 2124473U CN 92215656 CN92215656 CN 92215656 CN 92215656 U CN92215656 U CN 92215656U CN 2124473 U CN2124473 U CN 2124473U
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Abstract
The utility model relates to an optical fiber type CO detecting and alarming device which can be used for inflammable explosive places, which comprises a CO detecting sensor, an optical fiber transmission part and an electronic alarming circuit, wherein, the sensor comprises a wet type gas sensor of which a transparent container contains palladium sulfate-silicon ammonium molybdate solution and an optical sensing assembly. The signal detection and the signal transmission of the utility model does not use electricity, so the utility model is inflammable and explosive intrinsically. The utility model can be directly used for places where the real-time detection and the alarm of the content of CO need carrying out, such as coal mines, metallurgy, chemical industry, etc. The alarm has the advantages of simple structure and low cost.
Description
The utility model relates to a kind of optical-fiber type Carbon Monoxide Detection alarm that can be used for easily firing the occasion Carbon Monoxide Detection.
Detection for carbon monoxide content in the gas mainly contains electrochemical process, optical method, electric method etc., the electrochemical process shortcoming has been that the electrolytic solution life-span of air-sensitive effect is short, temperature compensation is also relatively more difficult, the shortcoming of optical method is that used gas sensor and device are complicated, high and cost an arm and a leg to request for utilization, the used gas sensor of air-sensitive method mainly contains semiconductor and catalytic combustion type two classes, element is heated, working temperature reaches more than 200 ℃, damage easily, resolution to tested gas is relatively poor, disturbed by other gas componants, the Carbon Monoxide Detection alarm disadvantage of prior art is to carry out the detection and the transmission of electric signal, because in requirement of explosion proof very tight mine or some inflammable and explosive occasions, the electric signal introducing can set off an explosion, so the used Carbon Monoxide Detection alarm of said method is restricted in the use.
The purpose of this utility model overcomes the prior art shortcoming, and a kind of optical-fiber type Carbon Monoxide Detection alarm without electrical signal detection and transmission is provided.
The technical solution of the utility model is achieved like this, it comprises by sensor for detecting carbon monoxide, Optical Fiber Transmission part and electronic warning circuit, and sensor for detecting carbon monoxide comprises and be placed with palladium sulfate in the light transmission container--the optical sensing assembly that is configured to that wet type gas sensor that the silicomolybdic acid ammonium salt solution constitutes and side are provided with the photometry lens; The wet type gas sensor is placed in the support, photometry lens and incident optical, emergent ray coupling; The wet type gas sensor contacts with carbon monoxide and produces that chemical reaction causes aberration and the light variable signal that produces is transferred to the electronic warning circuit that comprises light-to-current inversion through photometry lens, outgoing optical fiber.
The detection method of the utility model light can be transmission-type and reflective two kinds, thereby the container of wet type gas sensor has two kinds, for transmission-type, container and photometry lens are caused by light transmissive material in abutting connection with both sides, can be by glass or transparent plastic, to reflective, this container, a side and still be printing opacity, the another side is then topped reflectance coating, can plate the high metallic film of reflectivity, and outgoing optical fiber and incident optical can promptly be delivered to electronic warning circuit through the y-type optical fiber coupling mechanism changing light signal with the single fiber transmission with an optical fiber.
The support of the optical sensing assembly that is provided with in the utility model scheme is a female bracket, same axis lens are positioned at the support both sides, lens can become spherical lens with excellent lens, lens are coupled with incident ray and emergent ray respectively, this photoelectric sensing assembly can be installed with on-the-spot, transposing wet type gas sensor, be provided with dustproof every the light trap plate, behind the palladium sulfate one silicomolybdic acid ammonium salt solution and CO gas contact reaction of finite concentration proportioning in the wet type gas sensor, produce chemical reaction, cause that aberration changes, make the light transmission rate under the single wavelength change, thereby finished the conversion between gas one light, for the corresponding different transmitance of the carbon monoxide gas body burden of variable concentrations, and be desirable straight line, sensor for detecting carbon monoxide detects the carbon monoxide content of delivering to several PPm-several ten thousand PPm of electronic warning circuit energy display alarm with the relevant light variable signal of carbon monoxide content through Optical Fiber Transmission.
The utility model embodiment is described in detail in conjunction with the accompanying drawings.
Fig. 1 is a transmission-type optical-fiber type Carbon Monoxide Detection alarm structure principle chart;
Fig. 2 is a wet type gas-sensitive element structure schematic diagram;
Fig. 3 is an optical sensing modular construction front view;
Fig. 4 is an optical sensing modular construction vertical view;
Fig. 5 is a reflection type optical fiber type Carbon Monoxide Detection alarm structure principle chart.
Fig. 6 is the electronic warning schematic circuit.
By shown in Figure 1, the utility model is made up of three parts, comprise the carbonoxide detecting sensor that optical sensing assembly that support 3 that photometry lens 2 are set by wet type gas sensor 1 and side constitutes is made up, Optical Fiber Transmission part and the electronic warning circuit 5 formed by incident optical 4, outgoing optical fiber 6.By shown in Figure 2, the capsule that wet type gas sensor container is made up of five faces of 7-11, opened upper end, in capsule, put into the palladium sulfate one silicomolybdic acid ammonium salt solution 12 for preparing in advance, 7,10 are printing opacity, require to adopt the good material of printing opacity, and 8,9,11 are respectively front, back and bottom surface, when the emergent ray transmission mode was used the reflection mode instead, then 7 outsides were coated with the high metal membrane type other materials of reflectivity in the side.For avoiding the excessive container opened upper end of solution place also can toppedly have the material of good permeability, by Fig. 3 and shown in Figure 4, the optical sensing assembly is a kind of light signal to be passed through optical fiber, the optical-mechanical structure that lens detect, the utility model adopts the grin rod lens of 1/4 pitch that optical fiber input light is carried out boundling, it is little that the optical path length that connects into excellent lens has a volume, easily make, advantages such as optical loss is little, the excellent lens 2 that are in same axis be positioned at female bracket 3 both sides and respectively with incident optical 4,6 couplings of outgoing optical fiber, support 3 is installed on the base 16 by screw 17, in order to consider the installation site of wet type gas sensor, support is installed on the base 16 for also rotatable 90 °, one side of wet type gas sensor is provided with fixed dam 18, lid 14 matches with base 16, uniform circular hole on the lid, lid is provided with a dust excluding plate 15 for 14 times, also evenly have on the plate with lid on the mutual circular hole of dislocation, also be provided with screen type dust-separation safety screen 13 under the dust excluding plate, the silk screen that it can be made by metal or other materials, reach the dustproof purpose that is in the light like this, because the wet type gas sensor is in the female bracket of photoelectric sensing assembly, the circular hole of CO gas by lid and dust excluding plate contact the generation chemical reaction and makes the variation of solution aberration in the on-the-spot air with the palladium sulfate that the prepares in advance-silicomolybdic acid ammonium salt solution of gas sensor, change through the light that incident fibre 4 is transferred in the gas sensor thereby make by (as shown in Figure 6) light source in the electronic warning circuit, the light signal of this variation is sent to the electronic warning circuit through outgoing optical fiber 6 and carries out display alarm.
Be provided with a LED in the electronic warning circuit, sending infrared light by it delivers in the sensor for detecting carbon monoxide through incident optical, the relevant change in optical signal of the same carbon monoxide content that produces in the sensor is received by phototriode BG1 through optical connector by the outgoing Optical Fiber Transmission, electric signal after the light conversion is amplified to comparer A2 and setting signal comparison through amplifier A1, when the airborne carbon monoxide content in scene reaches certain value, it is the sensor change in optical signal, make when the A1 amplifying signal arrives certain value, A2 exports electronegative potential, trigger 11,12 form trigger flip-flop, make the alarm lamp bare hull, meanwhile, make 13, the 14 audio frequency oscillator work of forming, and send audio alarm sound by loudspeaker Y, the amplifier working point can be regulated by potentiometer W1, K is the ann reset switch, by opening the wet type gas sensor carbon monoxide content is reacted nonreversibility, for this reason, each through putting after the amplification, otherwise signal causes interference with stack, thereby need time controller to carry out timing zero setting in the circuit, these can be realized by microcomputer, need making software, increase cost and workload, the utility model is realized by ball bearing made using, by phototriode BG1, potentiometer W1, resistance R 2-R4 amplifier A1 connects into light-to-current inversion and signal amplification circuit; By potentiometer W2, capacitor C 4, C5 analog switch 19 resistance R 13, the R14 Sheffer stroke gate, 15 phase inverters 16,17 and amplifier A3 connect to form time control system circuit, by R5, R6, R7 capacitor C 1 comparer A2 and analog switch 18 connect into zero setting, sampling, comparator circuit, by 17 outputs level signals to 18,19 analog switches of forming are controlled, during 17 output high level, circuit is the zero setting state, promptly this moment, analog switch was in closure state, therefore the A1 signal send through R5 and puts on A2 and the C1 current potential and compare through R6, both are idiostatic, the A2 output low level, when 17 were output as low level, circuit was the sampling state, promptly 18 are in opening, because the C1 effect keeps former current potential, after current potential also surpassed setting voltage when A1 exports greater than former zero setting, A2 was output as high level, sampling, the time length of zero setting is by W2, W3 regulates respectively, and LED3 is sampling, the zero setting state shows.
Embodiment 2:
By shown in Figure 5, when adopting the reflection mode to transmit the light variable signal, the transmission of employing single fiber, promptly going out incident optical is same optical fiber, side 7 topped one deck reflectance coatings 19 of wet type gas sensor, carbon monoxide content and air-sensitive solution reaction cause that incident light changes through the reflectance coating reflection through Optical Fiber Transmission to optical connector 20, y-type optical fiber coupling mechanism 21 in the air, are that phototriode BG1 receives.
The utility model has the advantages that:
1, Carbon Monoxide Detection, signal are transmitted all without the signal of telecommunication, can not produce electric spark, belong to Sefe antiexplosion, can be directly used in colliery, metallurgy, chemical industry etc. need to be to the occasion of Carbon Monoxide Detection warning.
2, adopt palladium sulfate one silicomolybdic acid ammonium salt solution as carbon monoxide air-sensitive solution, anti-other gas interference performances are strong, and the life-span is long, without temperature-compensating.
3, the used gas sensor of the utility model and optical sensing modular construction are simple, and as long as change the air-sensitive solution composition, just can detect such as HS, NO, NO2, CH4, CO2, O2, H2 etc. other gas, can enlarge range of application.
4, solve air-sensitive solution reaction irreversibility and adopt zero setting, sampling, the time control circuit that is made up of hardware, the simple cost of circuit is low.
Claims (6)
1, a kind of optical-fiber type Carbon Monoxide Detection alarm of forming by sensor for detecting carbon monoxide, signal transmssion line and electronic warning circuit, it is characterized in that sensor for detecting carbon monoxide comprises and is placed with the optical sensing assembly that support 3 that wet type gas sensor 1 that sulfuric acid constitutes a silicomolybdic acid ammonium salt solution and side be provided with photometry lens (2) constitutes in the light transmission container; The wet type gas sensor is placed in the support (3), photometry lens (2) and incident optical (4), outgoing optical fiber (6) coupling; The wet type gas sensor contact with carbon monoxide produce that chemical reaction causes look and the light variable signal that produces through the photometry lens, emergent ray is transferred to the electronic warning circuit (5) that comprises light-to-current inversion.
2, optical-fiber type Carbon Monoxide Detection alarm according to claim 1, make for the printing opacity material the adjacent two sides of the container of wet type gas sensor and photometry lens.
3, optical-fiber type Carbon Monoxide Detection alarm according to claim 1 is characterized in that, the topped one deck reflectance coating in container one side (7) of wet type gas sensor.
4, optical-fiber type Carbon Monoxide Detection alarm according to claim 1, it is characterized in that, the support of optical sensing assembly (3) is a female bracket, the excellent lens (2) of same axis are positioned at this support both sides, and respectively and incident optical (4), outgoing optical fiber (6) coupling, support (3) is installed on the base (16), support is adorned fixedly plate washer (18) of a gas sensor on one side, lid (14) matches with base (16), uniform circular hole on the lid, dust excluding plate (15) is set under the lid, have on this plate with lid on the circular hole of circular hole mutual dislocation, also be provided with screen type dust-separation safety screen (13) under the dust excluding plate (15).
5, optical-fiber type Carbon Monoxide Detection alarm according to claim 1 is characterized in that, outgoing optical fiber and incident optical can be an optical fiber, with its coupling be photometry lens, incident light separates by a fiber coupler with emergent light.
6, optical-fiber type Carbon Monoxide Detection alarm according to claim 1, it is characterized in that, in electronic alarm circuit, be provided with by phototriode (BG1), potentiometer (W1), resistance (R2-R4), the light-to-current inversion amplifying circuit that amplifier (A1) is formed by connecting is by potentiometer (W2), electric capacity (C4), (C5) analog switch (19), resistance (R13), (R14) Sheffer stroke gate 15, phase inverter 16,17 and the time control circuit that connects to form of amplifier A3 and by (R5), (R6), (R7), electric capacity (C1), comparer (A2), analog switch (18) connects into and shows zero, sampling, comparator circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92215656 CN2124473U (en) | 1992-06-05 | 1992-06-05 | Optical fibre type co detecting and alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92215656 CN2124473U (en) | 1992-06-05 | 1992-06-05 | Optical fibre type co detecting and alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2124473U true CN2124473U (en) | 1992-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92215656 Granted CN2124473U (en) | 1992-06-05 | 1992-06-05 | Optical fibre type co detecting and alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2124473U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100593C (en) * | 1999-07-30 | 2003-02-05 | 中国石油化工股份有限公司巴陵分公司 | Process for preparing CO oxidant |
| CN100414289C (en) * | 2005-04-28 | 2008-08-27 | 上海理工大学 | Manufacturing method of sol-gel film air-sensitive sensor |
| CN100416261C (en) * | 2003-11-14 | 2008-09-03 | 广东工业大学 | Color developing reagent and detector tube for detecting carbon monoxide, fabricating method and application thereof |
| CN100437091C (en) * | 2006-07-25 | 2008-11-26 | 武汉理工大学 | Carbon monoxide and methane integral optical fiber sensing measuring system |
| CN102622847A (en) * | 2012-03-23 | 2012-08-01 | 武汉发博科技有限公司 | Reflective point type optical-fiber smoke-sensitive fire detector |
| CN102622848A (en) * | 2012-03-23 | 2012-08-01 | 武汉发博科技有限公司 | Radiating point-type optical fiber smoke-sensitive fire detector |
| WO2015058495A1 (en) * | 2013-10-21 | 2015-04-30 | 苏州大学 | Preparation method for multi-layer metal oxide porous film nano gas-sensitive material |
| CN105980835A (en) * | 2013-12-02 | 2016-09-28 | 蒙斯大学 | Gas sensor |
| CN107991239A (en) * | 2017-11-27 | 2018-05-04 | 上海泽泉科技股份有限公司 | One kind measurement container, measuring system and measuring method |
-
1992
- 1992-06-05 CN CN 92215656 patent/CN2124473U/en active Granted
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100593C (en) * | 1999-07-30 | 2003-02-05 | 中国石油化工股份有限公司巴陵分公司 | Process for preparing CO oxidant |
| CN100416261C (en) * | 2003-11-14 | 2008-09-03 | 广东工业大学 | Color developing reagent and detector tube for detecting carbon monoxide, fabricating method and application thereof |
| CN100414289C (en) * | 2005-04-28 | 2008-08-27 | 上海理工大学 | Manufacturing method of sol-gel film air-sensitive sensor |
| CN100437091C (en) * | 2006-07-25 | 2008-11-26 | 武汉理工大学 | Carbon monoxide and methane integral optical fiber sensing measuring system |
| CN102622847A (en) * | 2012-03-23 | 2012-08-01 | 武汉发博科技有限公司 | Reflective point type optical-fiber smoke-sensitive fire detector |
| CN102622848A (en) * | 2012-03-23 | 2012-08-01 | 武汉发博科技有限公司 | Radiating point-type optical fiber smoke-sensitive fire detector |
| CN102622848B (en) * | 2012-03-23 | 2014-05-21 | 武汉发博科技有限公司 | Radiating point-type optical fiber smoke-sensitive fire detector |
| CN102622847B (en) * | 2012-03-23 | 2014-06-11 | 武汉发博科技有限公司 | Reflective point type optical-fiber smoke-sensitive fire detector |
| WO2015058495A1 (en) * | 2013-10-21 | 2015-04-30 | 苏州大学 | Preparation method for multi-layer metal oxide porous film nano gas-sensitive material |
| US9816176B2 (en) | 2013-10-21 | 2017-11-14 | Soochow University | Preparation method for multi-layer metal oxide porous film nano gas-sensitive material |
| CN105980835A (en) * | 2013-12-02 | 2016-09-28 | 蒙斯大学 | Gas sensor |
| CN107991239A (en) * | 2017-11-27 | 2018-05-04 | 上海泽泉科技股份有限公司 | One kind measurement container, measuring system and measuring method |
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| CF01 | Termination of patent right due to non-payment of annual fee |