CN104198394A - Photoacoustic spectrometry detection device with detachable optical filter plate structure - Google Patents
Photoacoustic spectrometry detection device with detachable optical filter plate structure Download PDFInfo
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- CN104198394A CN104198394A CN201410455933.XA CN201410455933A CN104198394A CN 104198394 A CN104198394 A CN 104198394A CN 201410455933 A CN201410455933 A CN 201410455933A CN 104198394 A CN104198394 A CN 104198394A
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Abstract
The invention discloses a photoacoustic spectrometry detection device with a detachable optical filter plate structure. The photoacoustic spectrometry detection device is characterized in that optical filter plates of the photoacoustic spectrometry detection device are replaceable, namely, the optical filter plates are of the detachable optical filter plate structure. Each detachable optical filter plate (5) comprises an optical filter installing plate, an optical filter, a rotating shaft and a fixing bin for fixing the optical filter installing plate. Slots are formed in two sides of each fixing bin, and are matched with detachable optical filter plate fixing pins; each optical filter installing plate is symmetrically provided with optical filter installing holes around the center, and the optical filters are arranged in the optical filter installing holes. The optical filter installing plates are driven to rotate around a shaft by detachable optical filter plate drivers. Each optical filter plate driver comprises a drive motor and a connector; and the photoacoustic spectrometry detection device is provided with a plurality of detachable optical filter plates, and different detachable optical filter plates are installed specific to different to-be-detected gases.
Description
Technical field
The present invention relates to a kind of gas-detecting device, particularly a kind of optoacoustic spectroscopy pick-up unit that can optical filter dish interchangeable structure.
Background technology
Gas detection technology has application extremely widely in suitability for industrialized production and daily life, such as discharging waste gas detection and the breath detection of the detection of airborne trace contamination gas, human body diseases and medical diagnosis aspect etc. of the Gases Dissolved in Transformer Oil detection in Leak Detection, the electric system of oil and gas pipes, chemical enterprise.
As in power industry, actively apply on-line monitoring technique, carry out State Maintenance, strengthen conventionally test and comprehensive analysis of equipment, having eliminated in time some hidden trouble of equipment is megatrend of development.Electrical equipment malfunction, as Power Transformer Faults, the gas insulated electric apparatus faults such as SF6, fluorine carbon mixed gas etc. are the key factors of harm power network safety operation always, therefore, the running status of these electrical equipments are detected particularly important.
For filling type power transformer, need the characteristic gas detecting to have CH4, C2H4, H2, CO, CO2, C2H2, C2H6 etc.At present more to the detection method of such gas; Mention a kind of system of the on-line monitoring power transformer that adopts optoacoustic spectroscopy as patent 200910046340.7, this optoacoustic spectroscopy detecting instrument adopts tunable cascade diode laser instrument as light source.
For the electrical equipment taking sulfur hexafluoride gas (SF6) as insulation and arc-extinguishing medium, as GIS (gas-insulated switchgear, Gas-Insulated Switchgear), isolating switch, transformer, switch cubicle etc., the characteristic gas detecting at present has SO2F2, SOF2, SF4, SF2, H2S, SOF4 etc.; Patent CN2747583Y " testing agency of sulfur hexafluoride electrical equipment fault locator " is by a four-way connection Bonding pressure sensor, SO
2electrochemical gas sensor and H
2s electrochemical gas sensor, detects SO
2and H
2the content of S to device interior diagnosing malfunction.But this patent can only detect SO
2and H
2s gas, can be subject to the restriction of sensor while detecting multiple gases component.Similarly also has patent CN101464671A " device and method of a kind of sulfur hexafluoride gas and analyte monitoring thereof ".Patent CN101644670A " infrared detecting device of sulfur hexafluoride gaseous discharge micro component and method " utilizes the method for Fourier infrared spectrum, and to GIS, the SF6 decomposition gas under shelf depreciation detects.Also have, patent CN10151496A " the SF6 detection system based on optoacoustic spectroscopy ", patent CN101982759A " office puts down infrared photoacoustic spectra pick-up unit and the method for sulfur hexafluoride decomposition components ", patent CN102661918A " off-resonance optoacoustic spectroscopy detects analytical equipment ", but be all the device for a certain of SF6 decomposition gas or certain several component design, helpless for the detection of other insulating mediums.
In addition, in electrical equipment, also has a class gas, it is the place of gas of SF6 gas, the mixed gas of mentioning any monomer gas of adopting among N2, O2, dry air, CO2, CF4, c-C4F8, C2F6, C3F8 or CF3I or any 2 kinds and above gas in this gas being mixed as patent CN200610160462.5, as insulating gas for gas insulated electric apparatus.Some are applying trial.The diagnosis based on fault analyte, detection technique and method for New insulated gas are also little.Patent CN201110160224.5 proposes by detecting CF4, C2F6, C2F4, C3F8 and C3F6 gas content in electrical equipment, judge c-C4F8 and the failure condition with the gas mixture such as N2, CF4 body insulation electrical equipment inside thereof, but do not mention the detection method of each gas composition.
In addition also have the gas detection of the occasions such as industrial enterprise, atmospheric environment, characteristics of contaminated respiratory droplets gas also to have increasing demand.
Analyze at present more existing technology for the detection of above-mentioned gas, as semiconductor transducer method, infra-red sepectrometry, vapor-phase chromatography, photocaustic spectroscopies etc., wherein only have infra-red sepectrometry, vapor-phase chromatography to have stronger versatility, but infra-red sepectrometry accuracy of detection are low, and vapor-phase chromatography observation process needs carrier gas, increase maintenance.
Photocaustic spectroscopy is a kind of novel high-precision gas concentration detection method, but for specific gas, specific optical filter need to be installed, can detect multiple gases as the equipment of oil dissolved gas, SF6 fault decomposition gas, fluorine carbon mixed gas fault decomposition gas, characteristics of contaminated respiratory droplets gas etc. as set up one simultaneously, need to install the even more optical filter of approximately 30 polyliths, as adopt the mounting structure that has at present optical filter in optoacoustic spectroscopy, because volume restrictions cannot realize.Meanwhile, existing optoacoustic spectroscopy pick-up unit optical filter dish is all fixedly mounted in monitoring device, and the wavelength of optical filter is fixed, and can only monitor certain several fixing gas.Being illustrated in figure 1 an optical filter dish is circular configuration, has 8 optical filter mounting holes around the rotating shaft symmetry at center.Under this structure, as will be filled more optical filter on optical filter dish, need to increase optical filter dish diameter, cause optical filter dish size too large, cause checkout equipment volume large, large optical filter dish causes driving the stable rotation of optical filter dish also more difficult simultaneously.
Fig. 1 is traditional optoacoustic spectroscopy pick-up unit filter disc structural representation.As shown in Figure 1, optical filter dish is circular configuration, has 8 optical filter mounting holes around the rotating shaft symmetry at center.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, propose a kind of optoacoustic spectroscopy pick-up unit of plug-in optical filter dish structure.Volume of the present invention is little, cost is low, and reliability is high, is applicable to the detection of various electrical equipment malfunction decomposition gases.
Optoacoustic spectroscopy is based on optoacoustic effect.Optoacoustic effect is produced by gas molecule electromagnetic wave absorption, gas molecule absorbs after the electromagnetic wave of specific wavelength to excited state, immediately to discharge the mode de excitation of heat energy, the heat energy discharging produces pressure wave in gas, the concentration of pressure wave intensity and gas molecule is proportional, absorb by detection the pressure wave intensity that different wave length produces, can obtain the concentration of gas with various component.
Gas optoacoustic spectroscopy pick-up unit of the present invention mainly comprises: optoacoustic spectroscopy pick-up unit casing, light source, mechanical chopper, chopper controller, plug-in optical filter dish, plug-in optical filter disk drive, plug-in optical filter dish fixed pin, photoacoustic cell, circulation air pump, solenoid valve, light-emitting window parabolic reflector, high sensitivity microphone, lock-in amplifier, and embedded host.Described light source is fixed on the casing of optoacoustic spectroscopy pick-up unit, and the center line of light source is corresponding with the center line of photoacoustic cell; The making material of described photoacoustic cell is aluminium alloy, aluminium, brass or stainless steel.Described photoacoustic cell comprises air intake opening, gas outlet, light inlet, light-emitting window, microphone installing port.The diameter of phi in optoacoustic chamber is that 3～100mm, length L are 20～500mm, and meets diameter of phi and be less than length L.The axial two ends of photoacoustic cell have manhole, are respectively light inlet and light-emitting window.Described light inlet is provided with the windowpane of high transmission rate; Described light-emitting window is provided with light-emitting window parabolic reflector.Perpendicular to having air intake opening and gas outlet on the axial photoacoustic cell sidewall of photoacoustic cell.Described air intake opening and gas outlet are positioned at photoacoustic cell the same side, and distribute along photoacoustic cell axis direction.Described air intake opening is in light inlet one side, and described gas outlet is in light-emitting window one side.Have microphone installing port in the position vertical with center line, photoacoustic cell sidewall middle part, high sensitivity microphone is arranged on described microphone installing port simultaneously.
The air intake opening of described photoacoustic cell and gas outlet connect respectively gas piping, and solenoid valve is housed on gas piping, the break-make of solenoid control pipeline.Drive detected gas to enter from outer suction port by the road by circulation air pump, return from outside gas outlet.Described solenoid valve is arranged on respectively air intake opening one side and gas outlet one side of photoacoustic cell, is fixed on pick-up unit casing.
Every pick-up unit can configure multiple plug-in optical filter dishes.Each plug-in optical filter dish comprises the plug-in fixed bin of optical filter mounting disc, optical filter, rotating shaft and fixing optical filter mounting disc.Described fixed bin both sides have draw-in groove, and this draw-in groove matches with plug-in optical filter dish fixed pin, and plug-in optical filter dish can be inserted.Plug-in optical filter dish fixed pin is arranged on optoacoustic spectroscopy pick-up unit casing.
Described optical filter mounting disc is arranged in fixed bin by rotating shaft, and optical filter mounting disc can pivot.Described optical filter mounting disc can be disc-shaped structure, and the card of optical filter mounting disc has the optical filter mounting hole of some around its center, optical filter is installed on mounting hole.Plug-in optical filter disk drive comprises drive motor, connector and fixed support.Connector couples together the rotating shaft of plug-in optical filter dish and the axle of drive motor, drives plug-in optical filter mounting disc rotation.
The structure of described optical filter mounting disc can be also gear-like structure, i.e. the outer ledge of optical filter mounting disc has teeth groove, has the optical filter mounting hole of some in optical filter mounting disc around center, on this mounting hole, optical filter is installed.Plug-in optical filter disk drive comprises and comprises drive motor, driven wheel and adjustable mount pad.Described driven wheel and drive motor are coaxial, drive driven wheel to rotate by drive motor.Described drive motor is fixed on adjustable mount pad, and drive motor can move up and down; Adjustable mount pad is arranged on optoacoustic spectroscopy pick-up unit casing.After plug-in optical filter dish inserts, when the work of described driven wheel, with the teeth groove interlock of optical filter mounting disc outer ledge, the mounting disc of driving optical filter pivots.
Described plug-in optical filter disk drive is by embedded host control.
Described mechanical chopper is placed on the endpiece of light source, is fixed on optoacoustic spectroscopy pick-up unit casing.The position of plug-in optical filter dish fixed pin, after mechanical chopper, makes to be positioned at after mechanical chopper after the insertion of plug-in optical filter dish.Meanwhile, after photoacoustic cell is positioned at plug-in optical filter dish.
Machinery chopper is connected with chopper controller via signal cable.The chopping the light modulating frequency of mechanical chopper is by the control of chopper controller, and by BNC signal wire, chopping the light modulation frequency signal is transferred to lock-in amplifier.Plug-in optical filter dish carries out filtering to the infrared light of modulating, the infrared light of transmission filter mating plate is injected through the light inlet of photoacoustic cell, penetrate through light-emitting window, light-emitting window parabolic reflector is the infrared light reflection light echo operatic tunes, and focuses on the geometric center in optoacoustic chamber.The photoacoustic signal producing in optoacoustic chamber is received by the high sensitivity microphone being arranged on photoacoustic cell sidewall, and transfers to lock-in amplifier processing by anti-jamming signal line, passes through RS485/232 cable transmission to embedded host after processing again.
The frequency response range of described high sensitivity microphone is 0.1Hz～30kHz, and sensitivity is greater than 20mV/Pa.The frequency range of described lock-in amplifier is 1mHz～102.4kHz, and sensitivity is 2nV～1V, and gain accuracy is ± 1%, and dynamic memory >100dB has two kinds of interfaces of GPIB and RS232.The output port of chopper controller is connected by BNC signal wire with described lock-in amplifier, the modulating frequency of chopper is as being sent to lock-in amplifier with reference to frequency by the output port of chopper controller, and the output signal of lock-in amplifier is transferred to embedded host processing through RS485/232 and obtains the information such as decomposition gas kind, concentration.
Brief description of the drawings
Fig. 1 tradition optoacoustic spectroscopy pick-up unit optical filter dish structural representation;
The structural representation of Fig. 2 pick-up unit embodiment one of the present invention;
Fig. 3 a is the structural representation of the plug-in optical filter mounting disc 5 of pick-up unit embodiment one of the present invention;
Fig. 3 b is the cross section structure schematic diagram of the plug-in optical filter mounting disc 5 of pick-up unit embodiment one of the present invention;
The combination structural representation of the plug-in optical filter dish of Fig. 4 pick-up unit embodiment one of the present invention and plug-in optical filter disk drive;
Fig. 5 pick-up unit embodiment two schematic diagram of the present invention;
Plug-in optical filter dish 5 structural representations of Fig. 6 pick-up unit embodiment two of the present invention;
The combination structural representation of the plug-in optical filter dish of Fig. 7 pick-up unit embodiment two of the present invention and plug-in optical filter disk drive;
In figure: 1 optoacoustic spectroscopy pick-up unit casing, 2 light sources, 3 mechanical choppers, 4 chopper controllers, 5 plug-in optical filter dishes, 6 plug-in optical filter dish fixed pins, 7 photoacoustic cells, 8 light-emitting window parabolic reflectors, 9 high sensitivity microphones, 10 plug-in optical filter disk drives, 11 lock-in amplifiers, 12 embedded hosts, 13 circulation air pumps, 14,15 solenoid valves.
Embodiment
Further illustrate the present invention below in conjunction with the drawings and specific embodiments.
As shown in Figure 2, the embodiment one of pick-up unit of the present invention mainly comprises optoacoustic spectroscopy pick-up unit casing 1, light source 2, mechanical chopper 3, chopper controller 4, plug-in optical filter dish 5, plug-in optical filter dish fixed pin 6, photoacoustic cell 7, light-emitting window parabolic reflector 8, high sensitivity microphone 9, plug-in optical filter disk drive 10, lock-in amplifier 11, embedded host 12, circulation air pump 13, and solenoid valve 14,15.
Described light source 2 is fixed on optoacoustic spectroscopy pick-up unit casing 1, is placed on the endpiece of light source 2 for the mechanical chopper 3 of chopping the light modulation.Plug-in optical filter dish 5 is fixed on after mechanical chopper 3 by plug-in optical filter dish fixed pin 6.Photoacoustic cell 7 is fixed on optoacoustic spectroscopy pick-up unit casing 1 after being positioned at plug-in optical filter dish 5, and on the center line of the center line of described photoacoustic cell 7 and light source 2, plug-in optical filter dish 5, the center line of optical filter mounting hole is corresponding.Plug-in optical filter disk drive 10 is fixed on optoacoustic spectroscopy pick-up unit 1, and coordinates with the rotating shaft of plug-in optical filter dish 5, controlled by embedded host 12 and drives plug-in optical filter dish 5 to rotate.
The light that light source 2 sends is after mechanical chopper 3 chopping the lights, and continuous parallel infrared light is modulated to the parallel infrared light with specific modulation frequency.The chopping the light modulating frequency that machinery chopper 3 is carried out is sent by chopper controller 4, is transferred to mechanical chopper 3, and is transferred to the reference frequency of lock-in amplifier 11 as lock-in amplifier by BNC signal wire by signal cable.
When work, the parallel infrared light that sees through plug-in optical filter dish 5 enters by the light inlet of photoacoustic cell 7, axially pass along photoacoustic cell, light-emitting window by photoacoustic cell penetrates, be reflected back optoacoustic pond 7 through light-emitting window parabolic reflector 8, and focus on the geometric center of photoacoustic cell 7, the infrared light of optic path multiplexing be decomposed gas absorption produce optoacoustic effect, the photoacoustic signal producing is converted into electric signal by high sensitivity microphone 9 receptions that are arranged on photoacoustic cell 7, enter lock-in amplifier 12 through anti-jamming signal line, further pass through RS485/232 cable transmission to embedded host 12, finally obtain the component information of detected insulating gas decomposition gas, comprise kind, content etc.
The geomery of light-emitting window parabolic reflector 8 coordinates with photoacoustic cell 7, and parabolic focus is at the geometric center place in corresponding optoacoustic chamber 70.
Tested gas enters from the air intake opening shown in Fig. 2, is driven along pipeline and is flowed by circulation air pump 13, through the first solenoid valve 14, enters optoacoustic chamber from the air intake opening of photoacoustic cell 7, then flows out from the gas outlet of photoacoustic cell 7, flows out through the second solenoid valve 15.Described the first solenoid valve 14, the second solenoid valve 15 are controlled break-make by embedded host 14; Described circulation air pump 13 is controlled start and stop by embedded host 12.Described the first solenoid valve 14, the second solenoid valve 15 are arranged on respectively photoacoustic cell 7 air intake opening one sides and gas outlet one side, are fixed on pick-up unit casing 1.
Fig. 3 a, 3b are the structural representation of plug-in optical filter dish 5 of the present invention; As shown in Figure 3, plug-in optical filter dish 5 mainly comprises fixed bin 51, rotating shaft 53, optical filter mounting disc 54 and optical filter 55.Described fixed bin 51 is rectangular parallelepiped cavity structure, a side hole; The both sides of fixed bin 51 have fixed bin draw-in groove 52.Described optical filter mounting disc 54 is disc-shaped structure, is arranged on 51 li of described fixed bins by rotating shaft 53; Optical filter 55, centered by rotating shaft 53, is arranged symmetrically in optical filter mounting disc 54.
Fig. 4 is the combination schematic diagram of plug-in optical filter dish 5 of the present invention and plug-in optical filter disk drive 10.As shown in Figure 4, plug-in optical filter disk drive 10 comprises drive motor 102, connector 101, fixed support 103; The rotating shaft 53 of plug-in optical filter dish 5 is connected with the drive motor 102 of plug-in optical filter disk drive 10 by connector 101, and drive motor 102 is fixed on optoacoustic spectroscopy pick-up unit casing 1 by fixed support.
Fig. 5 is the schematic diagram of pick-up unit embodiment two of the present invention.As shown in Figure 5, the difference of this embodiment and Fig. 2 illustrated embodiment one is, plug-in optical filter dish 5 and plug-in optical filter disk drive 10 differences.The structure of plug-in optical filter dish 5 and plug-in optical filter disk drive 10 respectively as shown in Figure 6,7.
Fig. 6 is plug-in optical filter dish 5 structural representations of embodiment of the present invention two.As shown in Figure 6, plug-in optical filter dish 5 is with the difference of the plug-in optical filter dish shown in Fig. 3, and described optical filter mounting disc 54 is gear type structure, i.e. the outward flange of optical filter mounting disc 54 has teeth groove.
Fig. 7 is the plug-in optical filter dish of embodiment of the present invention two and the combination structural representation of plug-in optical filter disk drive.As shown in Figure 7, plug-in optical filter disk drive 10 comprises driven wheel 101, drive motor 102, drive motor mount pad 103.After plug-in optical filter dish 5 is in place, driven wheel 101 and plug-in optical filter dish 5 engaged gears, interlock position 104 is as shown in Figure 7.
Claims (4)
1. the optoacoustic spectroscopy pick-up unit of a plug-in optical filter dish structure, it is characterized in that: described pick-up unit comprises optoacoustic spectroscopy pick-up unit casing (1), light source (2), machinery chopper (3), chopper controller (4), plug-in optical filter dish (5), plug-in optical filter dish fixed pin (6), photoacoustic cell (7), light-emitting window parabolic reflector (8), high sensitivity microphone (9), plug-in optical filter disk drive (10), lock-in amplifier (11), embedded host (12), circulation air pump (13), and solenoid valve (14, 15), it is upper that described light source (2) is arranged on optoacoustic spectroscopy pick-up unit casing (1), and the center line of light source (2) is corresponding with the center line of photoacoustic cell (7), described mechanical chopper (3) is placed on the endpiece of light source (2), and plug-in optical filter dish fixed pin (6) is fixed on and is arranged on optoacoustic spectroscopy pick-up unit casing (1) above and is positioned at after mechanical chopper (3), described plug-in optical filter dish (5) is changable type, can take off from optoacoustic spectroscopy pick-up unit casing (1), also can be fixed by draw-in groove and plug-in optical filter dish fixed pin (6), photoacoustic cell (7) is positioned at plug-in optical filter dish (5) afterwards, and when work photoacoustic cell center line overlap with the optical filter center line on plug-in optical filter dish (5), the axial two ends of photoacoustic cell (7) have manhole, are respectively light inlet and light-emitting window, described light inlet is provided with windowpane, the light-emitting window end of photoacoustic cell is provided with light-emitting window parabolic reflector (8), perpendicular to having air intake opening and gas outlet on the axial photoacoustic cell sidewall in optoacoustic chamber, described air intake opening and gas outlet are positioned at the same side of photoacoustic cell, and distribute along photoacoustic cell axis direction, described air intake opening is in light inlet one side, and described gas outlet is in light-emitting window one side, position in the corresponding optoacoustic of photoacoustic cell sidewall chamber has microphone installing port, and high sensitivity microphone (9) is arranged on described microphone installing port, air intake opening and the gas outlet of described photoacoustic cell (7) connect respectively gas piping, solenoid valve (14,15) is housed on gas piping, described solenoid valve (14,15) is arranged on respectively photoacoustic cell (7) air intake opening one side and gas outlet one side, is fixed on pick-up unit casing (1), drive detected gas to enter from air intake opening by the road by circulation air pump (13), return from gas outlet, described plug-in optical filter dish (5) is driven by plug-in optical filter disk drive (10), plug-in optical filter disk drive (10) is controlled by embedded host (12), machinery chopper (3) is connected with chopper controller (4) via signal cable, the chopping the light modulating frequency of mechanical chopper (3) is controlled by chopper controller (4), and by BNC signal wire, chopping the light modulation frequency signal is transferred to lock-in amplifier (11), the photoacoustic signal producing in photoacoustic cell (7) is received by the high sensitivity microphone (9) being arranged on photoacoustic cell sidewall, and transfer to lock-in amplifier (11) processing by anti-jamming signal line, after processing, pass through again RS485/232 cable transmission to embedded host (12).
2. according to optoacoustic spectroscopy pick-up unit claimed in claim 1, it is characterized in that described plug-in optical filter dish (5) comprises fixed bin (51), rotating shaft (53), optical filter mounting disc (54) and optical filter (55); Described fixed bin (51) is rectangular parallelepiped cavity structure, a side hole; The both sides of fixed bin (51) have fixed bin draw-in groove (52); Described optical filter mounting disc (54) is disc-shaped structure, is arranged on described fixed bin (51) inner by rotating shaft (53); Optical filter (55) is centered by rotating shaft (53), and symmetrical is arranged in optical filter mounting disc (54).Described optical filter mounting disc (54) is driven by plug-in optical filter disk drive (10); Described plug-in optical filter disk drive (10) comprises connector (101), drive motor (102) and fixed support (103).The rotating shaft (53) of plug-in optical filter dish (5) is connected with plug-in optical filter disk drive (10) by connector (101).
3. according to optoacoustic spectroscopy pick-up unit claimed in claim 1, it is characterized in that: described plug-in optical filter dish (5) comprises fixed bin (51), rotating shaft (53), optical filter mounting disc (54) and optical filter (55); Described fixed bin (51) is rectangular parallelepiped cavity structure, a side hole; The both sides of fixed bin (51) have fixed bin draw-in groove (52); Described optical filter mounting disc (54) is gear-like structure, the outer ledge that is optical filter mounting disc (54) has teeth groove, and this teeth groove matches with the teeth groove of driven wheel (101) in box optical filter disk drive (10); It is inner that described optical filter mounting disc (54) is arranged on described fixed bin (51) by rotating shaft (53); Optical filter (55), centered by rotating shaft (53), is arranged symmetrically in optical filter mounting disc (54); Described plug-in optical filter disk drive (10) comprises driven wheel (101), drive motor (102) and drive motor mount pad (103), driven wheel (101) is connected with the axle of drive motor (102), and drive motor (102) is arranged on drive motor mount pad (103).
4. according to optoacoustic spectroscopy pick-up unit claimed in claim 1, it is characterized in that: the making material of described photoacoustic cell (7) is aluminium alloy or aluminium or brass or stainless steel.
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|---|---|---|---|
| CN201410455933.XA CN104198394B (en) | 2014-09-09 | 2014-09-09 | Photoacoustic spectrometry detection device with detachable optical filter plate structure |
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| CN201410455933.XA CN104198394B (en) | 2014-09-09 | 2014-09-09 | Photoacoustic spectrometry detection device with detachable optical filter plate structure |
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| CN104198394A true CN104198394A (en) | 2014-12-10 |
| CN104198394B CN104198394B (en) | 2017-02-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530798A (en) * | 2019-10-15 | 2019-12-03 | 苏州市职业大学 | A kind of optoacoustic spectroscopy integrated monitoring |
| CN111321058A (en) * | 2020-03-06 | 2020-06-23 | 成都博奥晶芯生物科技有限公司 | Optical positioning coded disc, device and method for microfluidic chip |
| CN114324207A (en) * | 2021-12-24 | 2022-04-12 | 辽宁华一检测认证中心有限公司 | Full-spectrum detection system for rapidly detecting food |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010021074A1 (en) * | 1997-07-16 | 2001-09-13 | Samuel A. Marquiss | Optical filter holder assembly |
| CN2849712Y (en) * | 2005-12-22 | 2006-12-20 | 公安部上海消防研究所 | Apparatus based on photoacoustic principle for detecting toxic harmful gas and fire alarm |
| CN101806947A (en) * | 2010-03-25 | 2010-08-18 | 谭懋 | Rotation switching method and device of multiple optical filters of imaging sensor |
| CN102661918A (en) * | 2012-05-28 | 2012-09-12 | 中国科学院电工研究所 | Off-resonance photoacoustic spectrometric detection and analysis device |
| CN202617246U (en) * | 2012-05-25 | 2012-12-19 | 广州市信康科技电子有限公司 | Monitoring camera provided with rotatable lens combined disc |
| CN202631418U (en) * | 2012-06-27 | 2012-12-26 | 山东电力集团公司电力科学研究院 | Portable photoacoustic spectrometry detection device for SF6 gas decomposer |
-
2014
- 2014-09-09 CN CN201410455933.XA patent/CN104198394B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010021074A1 (en) * | 1997-07-16 | 2001-09-13 | Samuel A. Marquiss | Optical filter holder assembly |
| CN2849712Y (en) * | 2005-12-22 | 2006-12-20 | 公安部上海消防研究所 | Apparatus based on photoacoustic principle for detecting toxic harmful gas and fire alarm |
| CN101806947A (en) * | 2010-03-25 | 2010-08-18 | 谭懋 | Rotation switching method and device of multiple optical filters of imaging sensor |
| CN202617246U (en) * | 2012-05-25 | 2012-12-19 | 广州市信康科技电子有限公司 | Monitoring camera provided with rotatable lens combined disc |
| CN102661918A (en) * | 2012-05-28 | 2012-09-12 | 中国科学院电工研究所 | Off-resonance photoacoustic spectrometric detection and analysis device |
| CN202631418U (en) * | 2012-06-27 | 2012-12-26 | 山东电力集团公司电力科学研究院 | Portable photoacoustic spectrometry detection device for SF6 gas decomposer |
Non-Patent Citations (1)
| Title |
|---|
| 谭志红等: "光声光谱技术应用于SF6局部放电分解组分检测", 《重庆大学学报》, vol. 36, no. 8, 31 August 2013 (2013-08-31) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530798A (en) * | 2019-10-15 | 2019-12-03 | 苏州市职业大学 | A kind of optoacoustic spectroscopy integrated monitoring |
| CN111321058A (en) * | 2020-03-06 | 2020-06-23 | 成都博奥晶芯生物科技有限公司 | Optical positioning coded disc, device and method for microfluidic chip |
| CN114324207A (en) * | 2021-12-24 | 2022-04-12 | 辽宁华一检测认证中心有限公司 | Full-spectrum detection system for rapidly detecting food |
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