CN2849712Y - Apparatus based on photoacoustic principle for detecting toxic harmful gas and fire alarm - Google Patents
Apparatus based on photoacoustic principle for detecting toxic harmful gas and fire alarm Download PDFInfo
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- CN2849712Y CN2849712Y CN 200520047848 CN200520047848U CN2849712Y CN 2849712 Y CN2849712 Y CN 2849712Y CN 200520047848 CN200520047848 CN 200520047848 CN 200520047848 U CN200520047848 U CN 200520047848U CN 2849712 Y CN2849712 Y CN 2849712Y
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- photoacoustic
- optical filter
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Abstract
The utility model relates to the field of detecting gas in fire disaster, particularly an apparatus based on light and sound principle for detecting toxic harmful gas and alarming the fire disaster and is composed of a light and sound spectroscopy gas analysis apparatus and a fire disaster alarming control apparatus, wherein the light and sound spectroscopy gas analysis apparatus is composed of a light source, a chopper, a chopper blade wheel, a filter selecting wheel, a light and sound pool, a microphone, an infrared detector, a gas analysis apparatus power supply, a control apparatus and a base seat. The fire disaster alarming control apparatus adopts a microcomputer as a processing core and has the functions of collecting and processing the data, carrying out the liquid crystal display, using a button to control the operation, automatically detecting and alarming the fire disaster, early detecting and alarming fault, programming on the field, recording the event, arranging the sensitivity, resetting, self detecting, maintaining apparatuses, etc. All the control of the light and sound spectroscopy gas analysis apparatus is operated by keys on a panel of the fire disaster alarming control apparatus. The apparatus based on light and sound principle for detecting toxic harmful gas and alarming the fire disaster has the advantages of high detection sensitivity, good gas selectivity, high reliability, high response speed, etc., and can early alarm the fire disaster and rapidly and accurately detect the leakage of micro toxic and harmful gas.
Description
Technical field
The utility model belongs to the fire gases detection range, is specifically related to a kind of toxic and harmful based on photoacoustic principle and detects and fire alarm installation.
Background technology
Aspect detection, alarm technique, because various solid combustibles mostly are organism, commitment in the fire generation, can produce gases such as CO, fire does not have the thermal current disturbance in early days simultaneously, and gases such as CO can be followed Brownian movement and freely spread in air, and can pass indoor thermodynamic barrier, the roof space, hole, crack between a door and its frame etc., existing early fire detection device adopts ion, optical detector of fire smoke, and these detectors find that smoldering fire is comparatively slow.Utilize that the gas sensor element of these element manufacturing has easy poisoning, poor stability, the life-span is short and use shortcoming such as inconvenience, therefore seeking a kind of gas fire detectors such as CO that utilize principle such as optoacoustic to make is those skilled in the art's goal in research.
Summary of the invention
The purpose of this utility model be to provide a kind of simple in structure, compact, volume is little, highly sensitive, both can portablely also can be fixed on on-the-spot toxic and harmful and detected and fire alarm installation based on photoacoustic principle.
A kind of toxic and harmful based on photoacoustic principle that the utility model proposes detects and fire alarm installation, form by optoacoustic spectroscopy gas analyzing apparatus and fire alarming and control device, the optoacoustic spectroscopy gas analyzing apparatus is by light source 1, chopper 34, optical filter is selected wheel 4, optical filter wheel shaft 5, photoacoustic cell 6, microphone 7, infrared eye 8, gas analyzing apparatus power supply 10, control device 11, pedestal 12, gas production pump 23, mass flowmeter 32, fire alarming and control device is formed, wherein, chopper 34 is made up of chopper column 2 and chopper impeller 3, chopper impeller 3 is fixed on the chopper column 2, and chopper column 2 is fixed on the pedestal 12; Optical filter selects wheel 4 to be fixed on the glistening light of waves sheet wheel shaft 5; Photoacoustic cell 6 hollows, inwall are the gold-plated pipe 35 of cylindrical photoacoustic cell; Microphone 7 is two, is individually fixed in the central authorities of the gold-plated pipe 35 of photoacoustic cell; Gas analyzing apparatus power supply 10 is fixed on the pedestal 12, is made up of amplifier 24, controller power source 25, actuator power supply 26 and light source power 27; Control device 11 is fixed on the pedestal, is made up of optical filter wheel controller 28, solenoid valve controller 29, gas production pump controller 30, mass flowmeter controller 31, and control device 11 connects data acquisition unit 39; Amplifier 24 is two, a upper end of being fixed in photoacoustic cell 6, and another amplifier 24 is fixed in infrared eye 8 one sides; Photoacoustic cell 24 peripheries are provided with air admission hole 36, venthole 37; Solenoid valve 22 is two, connects air admission hole 36, the venthole 37 of photoacoustic cell respectively; One end of gas production pump 23 connects solenoid valve 22, other end quality of connection flowmeter 32; Light source 1 is aimed at the light inlet of chopper, and the light-emitting window of chopper is aimed at the optical filter 38 that optical filter is selected to take turns, and optical filter 38 is aimed at the light inlet of photoacoustic cells 6, and the light-emitting window of photoacoustic cell 6 is aimed at infrared eye 8; Fire alarming and control device is connected to form through circuit by data acquisition unit 39, microcomputer 33 and printer, and the data acquisition unit 39 of fire alarming and control device links with the control device 11 of gas analyzing apparatus.
In the utility model, controller power source 25 connects amplifier 24 respectively, optical filter is selected wheel 4, solenoid valve controller 29, gas production pump controller 30, mass flowmeter controller 31; Actuator power supply 25 connects optical filter wheel controller 28, solenoid valve 22 respectively; Light source power 27 connects light source 1.
In the utility model, the optical filter in the control device 11 selects wheel controller 28 to connect optical filter selection wheel 4, solenoid valve controller 29 connects solenoid valve 22, and gas production pump controller 30 connects gas production pump 23, mass flowmeter controller 31 quality of connection flowmeters 32.
In the utility model, fire alarming and control device can be selected general fire-alarm for use, preferable can selecting for use is provided with LCDs 14, interlock indication information 15, fire alarm information 16, status indicator lamp 17, function manipulation key 18, direct start-stop key 19, gas photoacoustic spectroscopy device operating key 20 on microcomputer 33 panels, these parts are connected with the control chip of microcomputer 33 respectively.
In the utility model, optical filter selects wheel 4 rounded, is four optical filters 38 that are symmetrically distributed around the center with the circular shaft.Can detect in real time 4 kinds of gases respectively by forwarding different optical filters to, under the bigger situation of external environmental interference factor, corresponding with it optical filter also can be installed as a reference, so both can measure 3 kinds of gases, the also interference of having avoided external environment to bring well simultaneously.
In the utility model, case 9 connects pedestal 12 by bolt.
In the utility model, the bottom of case 9 is provided with damping plastic mattress pin 13.
In the utility model, light source 1 adopts the Infrared High-Power radiating light source.
In the utility model, aluminum can be adopted in photoacoustic cell 6 outsides, considers that mainly thermal conductivity is good, in light weight.Brass material can be adopted for the gold-plated pipe of photoacoustic cell in inside, and its inwall adopts cylindrical structural, and gold-plated through polishing, and the gold-plated inside pipe wall of photoacoustic cell central authorities have respectively placed a high precision microphone 7 up and down simultaneously.
Two states is arranged during the utility model work: initiatively gas production and passive gas production, can utilize the gas production pump in the optoacoustic gas analyser initiatively to gather gaseous sample by external air collecting pipe when the atmosphere gas sample is detected; Close the gas production pump when barotropic gas sample is detected and to realize passive gas production, and can utilize mass rate control meter to realize the control of flow velocity and component ratio.The process of gas concentration measurement is: the device opening initialization comprises the lock-in amplifier initialization, light source preheating, optical filter location, preliminary works such as chopper operation.Light-resource fousing enters photoacoustic cell, and the tested gas absorption laser emission energy in the photoacoustic cell and produce pressure wave converts electric signal to by microphone, draws corresponding gas concentration by COMPUTER CALCULATION again; Fire alarming and control device is controlled air inlet/give vent to anger solenoid valve and gas collecting pump collection gas by program or operational order, and gas carries out closing when optoacoustic is measured gas check valve after entering photoacoustic cell.With calibrating gas device is demarcated if desired, can be come the charge flow rate and the proportioning of pilot-gas, thereby can come caliberating device by computing machine-AD/DA data acquisition unit-gas mass flow control meter with the gas of concentration known.Fire alarming and control device carries out the selection of sensitivity, time constant by the GPIB module controls amplifier of USB interface, gathers photoacoustic signal and light source power signal in order, and does to calculate corresponding to the gas concentration when the front filter transmission peak wavelength.The fire alarming and control device liquid crystal display shows and stores the result of gasmetry, and device sends sound and light alarm when gas concentration value surpasses alarming value.The interval of gas sampling, sampling number, Measuring Time, warning thresholding can artificially be set.
Fire alarming and control device of the present utility model adopts advanced microcomputer as handling core, has data acquisition process, liquid crystal display, button control operation, fire detects automatically and warning, initial failure detection and warning, field programming, logout, sensitivity are set, reset, self check and install function such as maintenance.LCDs 14 shows tested gas concentration curve in real time, when gas concentration surpasses setting value, show fire alarm information 16 and show corresponding status indicator lamp 17, the gaseous species of optoacoustic spectroscopy gas analyzing apparatus is selected, sampling time, number of times, functions such as flowmeter proportioning are all finished by 20 operations of gas photoacoustic spectroscopy device operating key, function manipulation key 18 is used for selecting different functions, be convenient to difference in functionality is provided with, directly start-stop key 19 is used for starting and stopping fire alarming and control device, the All Alerts record, and failure logging can come out by the printer prints that fire alarming and control device carries.Optoacoustic spectroscopy gas analyzing apparatus and fire alarming and control device are formed the poisonous harmful gas of a cover and are detected and fire alarm installation.
In the utility model, the CPU control chip of optoacoustic spectroscopy gas analyzing apparatus is installed in the fire alarming and control device, gas photoacoustic spectroscopy device and fire alarming and control device are formed toxic and harmful detection and the fire alarm installation of a cover based on photoacoustic principle, all controls of optoacoustic spectroscopy gas analyzing apparatus are all by 20 operations of the gas photoacoustic spectroscopy device operating key on the fire alarming and control device panel, the gaseous species of optoacoustic spectroscopy gas analyzing apparatus is selected, sampling time, number of times, functions such as flowmeter proportioning are all finished by 20 operations of optoacoustic spectroscopy gas analyzing apparatus operating key.
The utility model is measure CO, CO2, H simultaneously
2Three kinds of gases such as S, and have the detection sensitivity height, plurality of advantages such as gas-selectively is good, reliability is high and response speed is fast, can realize the early warning of fire and trace toxic poisonous gas leakage fast, accurately survey.
Description of drawings
Fig. 1 is the structural representation of the utility model gas.
Fig. 2 is the utility model fire alarming and control device panel synoptic diagram.
Fig. 3 selects the wheel construction synoptic diagram for the utility model optical filter.
Fig. 4 is the structural representation of the utility model gas analyzing apparatus power supply.
Fig. 5 is the structural representation of the utility model control device.
Number in the figure: 1 is light source, and 2 is the chopper column, and 3 is the chopper impeller, 4 are optical filter selection wheel, and 5 is the optical filter wheel shaft, and 6 is photoacoustic cell, 7 is microphone, and 8 is infrared eye, and 9 is tool housing, 10 is the gas analyzing apparatus power supply, and 11 is control device, and 12 is pedestal, 13 are damping plastic mattress pin, and 14 is LCDs, and 15 are the interlock indication information, 16 is fire alarm information, and 17 is status indicator lamp, and 18 is function manipulation key, 19 is direct start and stop key, and 20 is optoacoustic spectroscopy gas analyzing apparatus operating key, and 21 is printer, 22 is solenoid valve, and 23 are the gas production pump, and 24 is amplifier, 25 is controller power source, and 26 is the actuator power supply, and 27 is light source power, 28 is the optical filter wheel controller, and 29 is solenoid valve controller, and 30 are the gas production pump controller, 31 is the mass flowmeter controller, and 32 is mass flowmeter, and 33 is microcomputer, 34 is chopper, 35 is the gold-plated pipe of photoacoustic cell, and 36 is the photoacoustic cell air admission hole, and 37 is the photoacoustic cell venthole, 38 is optical filter, and 39 is data acquisition unit.
Embodiment
Further specify the utility model below by embodiment.
Embodiment 1, and following parts are connected by Fig. 1-mode shown in Figure 5, and these those skilled in the art all can finish the enforcement of the utility model device smoothly.Light source 1 adopts the Infrared High-Power heat radiation light source, model is IR-12, HawkEye Technologies, LLC, and make infrared light can be good at focusing on to pass optical filter and enter photoacoustic cell 6 that the gold-plated pipe 35 of photoacoustic cell adopts brass materials by ellipsoidal mirror, its inwall adopts cylindrical structural, and gold-plated through polishing, it is of a size of diameter 14mm, and long is the cylindrical of 50mm.The chopper model is Scitec Cop.CD-12, mainly form by chopper column 2 and chopper impeller 3, optical filter selects wheel 4 to be close to the chopper impeller, optical filter wheel shaft 5 is used for fixing optical filter and selects wheel 4, optical filter selects wheel 4 rounded, with the circular shaft is four optical filters that are symmetrically distributed around the center, and effective clear aperature of optical filter is 25mm.The microphone model is EK3133, place photoacoustic cell 6 central inwalls respectively, the infrared eye model is kT-3130, be fixed on the pedestal, gas analyzing apparatus power supply 10 and control device 11 are individually fixed on the pedestal, and gas analyzing apparatus power supply 10 is made up of amplifier and controller power source, actuator power supply and light source power three parts; Control device 11 is made up of optical filter wheel controller, solenoid valve controller, gas production pump controller, mass flowmeter controller.What solenoid valve adopted is the 2P025-06-DC12V solenoid valve, and the gas production pump has adopted 8032 series membranes chip electromagnetic pumps, and the mass flowmeter model is D07-12A.Whole device is being covered by tool housing 9, and it is the aluminium sheet of 1mm that tool housing 9 materials adopt thickness, and it is the aluminium sheet of 15mm that pedestal 12 adopts thickness, and outer casing bottom is equipped with damping plastic mattress pin 13.Fire alarming and control device adopts SA4050 type fire alarming and control device, gas photoacoustic spectroscopy device CPU control chip is positioned at the SA4050 fire alarming and control device, and all controls of gas photoacoustic spectroscopy device are all by the key operation on the SA4050 fire alarming and control device panel.SA4050 fire alarming and control device panel is made up of LCDs 14, interlock indication information 15, fire alarm information 16, status indicator lamp 17, function manipulation key 18, direct start-stop key 19, gas photoacoustic spectroscopy device operating key 20, printer 21 etc.The model of data acquisition unit is USB-6008, and gas photoacoustic spectroscopy device and SA4050 fire alarming and control device are formed toxic and harmful detection and the fire alarm installation of a cover based on photoacoustic principle.
Claims (8)
1, a kind of toxic and harmful based on photoacoustic principle detects and fire alarm installation, form by optoacoustic spectroscopy gas analyzing apparatus and fire alarming and control device, it is characterized in that the optoacoustic spectroscopy gas analyzing apparatus is by light source (1), chopper (34), optical filter is selected wheel (4), optical filter wheel shaft (5), photoacoustic cell (6), microphone (7), infrared eye (8), gas analyzing apparatus power supply (10), control device (11), pedestal (12), gas production pump (23), mass flowmeter (32) is formed, chopper (34) is made up of chopper column (2) and chopper impeller (3), chopper impeller (3) is fixed on the chopper column (2), and chopper column (2) is fixed on the pedestal (12); Optical filter selects wheel (4) to be fixed on the glistening light of waves sheet wheel shaft (5); Photoacoustic cell (6) middle part is hollow, and inwall is the gold-plated pipe of cylindrical photoacoustic cell (35); Microphone (7) is two, is individually fixed in the central authorities of the gold-plated pipe of photoacoustic cell (35); Gas analyzing apparatus power supply (10) is fixed on the pedestal (12), is made up of amplifier (24), controller power source (25), actuator power supply (26) and light source power (27); Control device (11) is fixed on the pedestal, is made up of optical filter wheel controller (28), solenoid valve controller (29), gas production pump controller (30), mass flowmeter controller (31), and control device (11) connects data acquisition unit (33); Amplifier (24) is two, a upper end of being fixed in photoacoustic cell (6), and another amplifier (24) is fixed in infrared eye (8) one sides; Photoacoustic cell (24) periphery is provided with air admission hole (36), venthole (37); Solenoid valve (22) is two, connects air admission hole (36), the venthole (37) of photoacoustic cell respectively; One end of gas production pump (23) connects solenoid valve (22), other end quality of connection flowmeter (32); Light source (1) is aimed at the light inlet of chopper (34), and the light-emitting window of chopper (34) is aimed at the optical filter (38) on the optical filter selection wheel (4), and optical filter (38) is aimed at the light inlet of photoacoustic cell (6), and the light-emitting window of photoacoustic cell (6) is aimed at infrared eye (8); Fire alarming and control device is connected to form through circuit by data acquisition unit (39), microcomputer (33) and printer (21), and the data acquisition unit of fire alarming and control device (39) links with the control device (11) of gas analyzing apparatus.
2, the toxic and harmful based on photoacoustic principle according to claim 1 detects and fire alarm installation, it is characterized in that controller power source (25) connects amplifier (24) respectively, optical filter is selected wheel (4), solenoid valve controller (29), gas production pump controller (30), mass flowmeter controller (31); Actuator power supply (25) connects optical filter wheel controller (28), solenoid valve (22) respectively; Light source power (27) connects light source (1).
3, the toxic and harmful based on photoacoustic principle according to claim 1 detects and fire alarm installation, it is characterized in that the optical filter selection wheel controller (28) in the control device (11) connects optical filter selection wheel (4), solenoid valve controller (29) connection solenoid valve (22), gas production pump controller (30) connects gas production pump (23), mass flowmeter controller (31) quality of connection flowmeter (32).
4, the toxic and harmful based on photoacoustic principle according to claim 1 detects and fire alarm installation, it is characterized in that the CPU control chip on the fire alarming and control device microcomputer (33) connects the LCDs (14) on microcomputer (33) panel, the indication information (15) that links, fire alarm information (16), status indicator lamp (17), function manipulation key (18), direct start and stop key (19), optoacoustic spectroscopy gas analyzing apparatus operating key (20) respectively.
5, the toxic and harmful based on photoacoustic principle according to claim 1 detects and fire alarm installation, it is characterized in that optical filter selection wheel (4) is rounded, is four optical filters (38) that are symmetrically distributed around the center with the circular shaft.
6, the toxic and harmful based on photoacoustic principle according to claim 1 detects and fire alarm installation, it is characterized in that case (9) connects pedestal (12) by bolt.
7, the toxic and harmful based on photoacoustic principle according to claim 1 detects and fire alarm installation, it is characterized in that the bottom of case (9) is provided with damping plastic mattress pin (13).
8, the toxic and harmful based on photoacoustic principle according to claim 1 detects and fire alarm installation, it is characterized in that light source (1) adopts the Infrared High-Power radiating light source.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047848 CN2849712Y (en) | 2005-12-22 | 2005-12-22 | Apparatus based on photoacoustic principle for detecting toxic harmful gas and fire alarm |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200520047848 CN2849712Y (en) | 2005-12-22 | 2005-12-22 | Apparatus based on photoacoustic principle for detecting toxic harmful gas and fire alarm |
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| CN2849712Y true CN2849712Y (en) | 2006-12-20 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251480B (en) * | 2007-02-21 | 2011-11-23 | 莱丹加工技术公司 | Gas sensor |
| CN104198394A (en) * | 2014-09-09 | 2014-12-10 | 中国科学院电工研究所 | Photoacoustic spectrometry detection device with detachable optical filter plate structure |
| CN104778807A (en) * | 2014-03-28 | 2015-07-15 | 仲恺农业工程学院 | Farmland fire remote alarm system based on photoacoustic effect |
| CN110530798A (en) * | 2019-10-15 | 2019-12-03 | 苏州市职业大学 | A kind of optoacoustic spectroscopy integrated monitoring |
| CN110634260A (en) * | 2019-10-10 | 2019-12-31 | 普宙飞行器科技（深圳）有限公司 | Smoke and fire detection device, unmanned aerial vehicle system and smoke and fire detection method |
| CN111551502B (en) * | 2020-05-29 | 2021-06-29 | 华中科技大学 | Non-resonant photoacoustic spectroscopy system |
| CN117367694A (en) * | 2023-12-05 | 2024-01-09 | 中汽数据(天津)有限公司 | Method and system for predicting leakage quantity of automobile air conditioner refrigerant |
-
2005
- 2005-12-22 CN CN 200520047848 patent/CN2849712Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251480B (en) * | 2007-02-21 | 2011-11-23 | 莱丹加工技术公司 | Gas sensor |
| CN104778807A (en) * | 2014-03-28 | 2015-07-15 | 仲恺农业工程学院 | Farmland fire remote alarm system based on photoacoustic effect |
| CN104778807B (en) * | 2014-03-28 | 2018-07-24 | 仲恺农业工程学院 | Farmland fire remote alarm system based on photoacoustic effect |
| CN104198394A (en) * | 2014-09-09 | 2014-12-10 | 中国科学院电工研究所 | Photoacoustic spectrometry detection device with detachable optical filter plate structure |
| CN110634260A (en) * | 2019-10-10 | 2019-12-31 | 普宙飞行器科技（深圳）有限公司 | Smoke and fire detection device, unmanned aerial vehicle system and smoke and fire detection method |
| CN110530798A (en) * | 2019-10-15 | 2019-12-03 | 苏州市职业大学 | A kind of optoacoustic spectroscopy integrated monitoring |
| CN111551502B (en) * | 2020-05-29 | 2021-06-29 | 华中科技大学 | Non-resonant photoacoustic spectroscopy system |
| CN117367694A (en) * | 2023-12-05 | 2024-01-09 | 中汽数据(天津)有限公司 | Method and system for predicting leakage quantity of automobile air conditioner refrigerant |
| CN117367694B (en) * | 2023-12-05 | 2024-02-23 | 中汽数据(天津)有限公司 | Method and system for predicting leakage quantity of automobile air conditioner refrigerant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061220 Termination date: 20131222 |