CN101561391A - Gas concentration measuring device and measuring method thereof - Google Patents
Gas concentration measuring device and measuring method thereof Download PDFInfo
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- CN101561391A CN101561391A CN 200910146704 CN200910146704A CN101561391A CN 101561391 A CN101561391 A CN 101561391A CN 200910146704 CN200910146704 CN 200910146704 CN 200910146704 A CN200910146704 A CN 200910146704A CN 101561391 A CN101561391 A CN 101561391A
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Abstract
The invention pertains to the field of measurement and relates to a gas concentration measuring device and a measuring method thereof. The measuring device consists of a sampling port, a dry filter, an infrared light source, a gas detection chamber, an interference filter, an infrared detector, a gas extracting pump, a signal amplifier and a data processor; the sampling port is connected with the dry filter connected with the gas detection chamber; the gas detection chamber is connected with the infrared light source, the interference filter, the infrared detector and the gas extracting pump; and the infrared detector is connected with the signal amplifier connected with the data processor. Adopting a double optical path non-dispersive infrared absorption gas analyzing technology, the invention can completely avoid the interference to the monitored gas which is caused by interference gases and has no 'poisoning' phenomenon when gas concentration exceeds a limited value in the adoption of an electrochemistry gas sensing analysis technology.
Description
Technical field
The invention belongs to fields of measurement, relate to a kind of gas concentration proving installation and method of testing.
Background technology
At present, domestic do not having utilizable equipment aspect the test of aerial extinguishing agent concentration, and civil aircraft still can be used overseas equipment (a kind of chromatograph) and test, and military secret then can't be finished this test.In the gas concentration measurement field, most testing apparatuss can only realize static measurement at present, can't measure in real time; The external differential gas concentration measuring apparatus that adopts aboard is high to the pressure transducer precision, demarcates complexity, and antijamming capability is relatively poor.The present invention can not only measure in real time to gas concentration, and the measuring accuracy height, demarcate simple, antijamming capability is strong.
Summary of the invention
The purpose of this invention is to provide that a kind of gas concentration is unattenuated, a kind of accurately gas concentration proving installation of measurement data and method of testing.
Technical solution of the present invention is, proving installation is made up of thief hatch, the dried filtrator of making an uproar, infrared light supply, detection of gas chamber, interference filter, infrared eye, aspiration pump, signal amplifier and data processor, thief hatch and the dried filtrator of making an uproar join, the dried filtrator of making an uproar is connected to the detection of gas chamber, detection of gas chamber and infrared light supply, interference filter, infrared eye, aspiration pump join, infrared eye and signal amplifier join, and signal amplifier is connected with data processor.
The gas concentration method of testing is, gas is sucked from thief hatch by aspiration pump, by device for drying and filtering filtering dust, and behind the removal moisture content, inflow gas detecting chamber, fire extinguishing agent act on mutually with infrared light in detecting chamber, and the infrared light of specific wavelength produced very strong absorption, the optical routing two tunnel of detecting chamber is formed, and the first via is a reference light paths, and the wavelength of its interference filter is chosen in the non-absorbent wave band of gas to be measured; The second the tunnel for measuring light path, and the wavelength of its interference filter is chosen in the tested gas infrared absorption wave band; Infrared eye is converted to electric signal with received light intensity signal, after signal amplifier amplifies, sends into data processor, is digital signal by data processor with analog signal conversion, carries out data analysis for computing machine and handles.
Described interference filter is the absorption bands different to infrared light according to tested gas, manufactures the interference filter of reference light paths and the interference filter of measurement light path respectively.
The light path of described detecting chamber is measured when light path realizes multiple gases with measuring according to the kind increase reference light paths of tested gas.
Advantage that the present invention has and beneficial effect, the present invention adopts the double light path NDIR (Non-Dispersive Infrared) to absorb gas analysis technology, can avoid interference the interference of gas to monitoring gas fully; There is not such as electrochemical gas sensing assays technology " poisoning " phenomenon when gas concentration oversteps the extreme limit; Adopt fast modulation type infrared light supply, arrowband infrared fileter, high-sensitive quick response infrared eye and the high-precision A/D conversion and the Digital Signal Processing of wide spectrum, measuring accuracy height, response time weak point; Do not have any rotatable parts, have extreme high reliability;
Pressure, the reserves of multipoint gas concentration and fire-extinguishing bottle are measured simultaneously, realize online continuous real-time monitoring; The present invention can be separate at 15 gas sampling passages, respectively by the flowmeter of band flow control valve, monitors and adjust the flow of each passage; Adopt the light beam display technique, on the panel of rack, show the input voltage of 32 passage high-accuracy data acquisition units simultaneously; The data acquisition process software of test macro adopts the modular construction design, has Print Preview, real time monitoring, automatic zero adjustment, calibration automatically, function such as fault-tolerant.
Description of drawings
Fig. 1 is the composition frame chart of apparatus of the present invention;
Fig. 2 is a theory diagram of the present invention.
Fig. 3 is the theory diagram of multiple gases measurement of concetration of the present invention
Embodiment
Proving installation is made up of thief hatch, the dried filtrator of making an uproar, infrared light supply, detection of gas chamber, interference filter, infrared eye, aspiration pump, signal amplifier and data processor, thief hatch and the dried filtrator of making an uproar join, the dried filtrator of making an uproar is connected to the detection of gas chamber, detection of gas chamber and infrared light supply, interference filter, infrared eye, aspiration pump join, infrared eye and signal amplifier join, and signal amplifier is connected with data processor.
The gas concentration method of testing is, gas is sucked from thief hatch by aspiration pump, by device for drying and filtering filtering dust, and behind the removal moisture content, inflow gas detecting chamber, gas act on mutually with infrared light in detecting chamber, and the infrared light of specific wavelength produced very strong absorption, the optical routing two tunnel of detecting chamber is formed, and the first via is a reference light paths, and the wavelength of its interference filter is chosen in the non-absorbent wave band of gas to be measured; The second the tunnel for measuring light path, and the wavelength of its interference filter is chosen in the tested gas infrared absorption wave band; Infrared eye is converted to electric signal with received light intensity signal, after signal amplifier amplifies, sends into data processor, is digital signal by data processor with analog signal conversion, carries out data analysis for computing machine and handles.
Described interference filter is the absorption bands different to infrared light according to tested gas, manufactures the interference filter of reference light paths and the interference filter of measurement light path respectively.
The light path of described detecting chamber is measured when light path realizes multiple gases with measuring according to the kind increase reference light paths of tested gas.
The gas concentration proving installation is based on the non-dispersive infrared gas analysis principle, can be simultaneously concentration, pressure and the reserves of the gas of 15 measuring points be carried out real-time testing, the composition frame chart of test macro mainly is made up of 15 tunnel gas sample sensing devices, pressure transducer, electronic platform balance (band analog output interface circuit), 32 passage high-accuracy data acquisition units, computing machine and analysis software thereof and printer as shown in Figure 1.
Embodiment one
B) main configuration feature
15 road Halon, 1301 fire extinguishing agent sampling sensing devices
Fire extinguishing agent sampling sensing device is the key equipment of agent concentration test macro, the composition of device as shown in Figure 2, have 15 independently sampling sensing device compositions, its principle of work and structure are identical, and fire extinguishing agent is sucked from thief hatch by aspiration pump, by device for drying and filtering filtering dust, and behind the removal moisture content, the inflow gas detecting chamber, after the analyzing and processing of detection of gas chamber, delivery side of pump enters atmosphere by bleeding; Fire extinguishing agent acts on mutually with infrared light in detecting chamber, and the infrared light of specific wavelength produced very strong absorption, the optical routing two tunnel of detecting chamber is formed, the first via is a reference light paths, the wavelength of its interference filter is chosen in the non-absorbent wave band of gas to be measured, and it doesn't matter for the light intensity that pairing infrared eye receives and the concentration change of gas to be measured, only monitors the infrared light supply change of luminous intensity, to avoid external interference, improve measuring accuracy; The second the tunnel is that fire extinguishing agent is measured light path, and the wavelength of its interference filter is chosen in the characteristic infrared absorption wavelength place of Halon 1301 fire extinguishing agents, and the light intensity that pairing infrared eye receives changes with the concentration of Halon 1301 fire extinguishing agents; Because different compounds has different characteristic infrared absorption wavelength, the employing spike interference filter can be avoided the phase mutual interference between the multiple gases composition; 2 infrared eyes are converted to electric signal with received light intensity signal, after the noiselike signal amplifier amplifies, send into high-accuracy data acquisition unit, are digital signal by data acquisition unit with analog signal conversion, carry out data analysis for computing machine and handle.
Pressure transducer
Pressure transducer is selected NS-B type pressure transducer for use, and measurement range is 0 ~ 25Mpa, and precision is ± 0.025Mpa.
Electronic platform scale
Electronic platform balance is selected TCS-60 type electronic platform balance for use, and the scope of weighing is 0 ~ 60kg, and precision is ± 0.02kg the band analog output interface circuit.
32 passage high-accuracy data acquisition units
32 passage high-accuracy data acquisition units, use international standard USB interface standard, directly insert USB interface of computer work, and provide power supply by USB interface of computer, use automatic passage scanning technique and 32K first-in first-out memory buffer, 32 passage synchronous acquisition have automaticdata piece acquisition capacity and high data transmission efficiency, can realize real time data processing, the continuous contour level of the deposit data acquisition function of gathering fast satisfactoryly.
Basic mechanical design feature:
(1) acquisition channel number: 32;
(2) analog-to-digital conversion resolution: 16;
(3) analog-to-digital conversion frequency: 200KHz;
(4) program control enlargement factor: 1,2,4,8;
(5) first-in first-out memory buffer: 32K;
(6) USB interface, passage scanning automatically, synchronous acquisition.
Embodiment two
B) main configuration feature
15 road Halon1301 fire extinguishing agent sampling sensing devices and 15 road Halon1211 fire extinguishing agent sampling sensing devices
Fire extinguishing agent sampling sensing device is the key equipment of agent concentration test macro, the composition of device as shown in Figure 2, have 15 independently sampling sensing device compositions, its principle of work and structure are identical, and fire extinguishing agent is sucked from thief hatch by aspiration pump, by device for drying and filtering filtering dust, and behind the removal moisture content, the inflow gas detecting chamber, after the analyzing and processing of detection of gas chamber, delivery side of pump enters atmosphere by bleeding; Fire extinguishing agent acts on mutually with infrared light in detecting chamber, and the infrared light of specific wavelength produced very strong absorption, the optical routing three tunnel of detecting chamber is formed, the first via is a reference light paths, the wavelength of its interference filter is chosen in the non-absorbent wave band of gas to be measured, and it doesn't matter for the light intensity that pairing infrared eye receives and the concentration change of gas to be measured, only monitors the infrared light supply change of luminous intensity, to avoid external interference, improve measuring accuracy; The second the tunnel is that fire extinguishing agent is measured light path, and the wavelength of its interference filter is chosen in the characteristic infrared absorption wavelength place of Halon 1301 fire extinguishing agents, and the light intensity that pairing infrared eye receives changes with the concentration of Halon 1301 fire extinguishing agents; Third Road is that Halon 1211 fire extinguishing agents are measured light path, and the wavelength of its interference filter is chosen in the characteristic infrared absorption wavelength place of Halon1211 fire extinguishing agent, and the light intensity that pairing infrared eye receives changes with the concentration of Halon 1211 fire extinguishing agents; Because different compounds has different characteristic infrared absorption wavelength, the employing spike interference filter can be avoided the phase mutual interference between the multiple gases composition; 3 infrared eyes are converted to electric signal with received light intensity signal, after the noiselike signal amplifier amplifies, send into high-accuracy data acquisition unit, are digital signal by data acquisition unit with analog signal conversion, carry out data analysis for computing machine and handle.
Pressure transducer
Pressure transducer is selected NS-B type pressure transducer for use, and measurement range is 0 ~ 25Mpa, and precision is ± 0.025Mpa.
Electronic platform scale
Electronic platform balance is selected TCS-60 type electronic platform balance for use, and the scope of weighing is 0 ~ 60kg, and precision is ± 0.02kg the band analog output interface circuit.
32 passage high-accuracy data acquisition units
32 passage high-accuracy data acquisition units, use international standard USB interface standard, directly insert USB interface of computer work, and provide power supply by USB interface of computer, use automatic passage scanning technique and 32K first-in first-out memory buffer, 32 passage synchronous acquisition have automaticdata piece acquisition capacity and high data transmission efficiency, can realize real time data processing, the continuous contour level of the deposit data acquisition function of gathering fast satisfactoryly.
Basic mechanical design feature:
(1) acquisition channel number: 32;
(2) analog-to-digital conversion resolution: 16;
(3) analog-to-digital conversion frequency: 200KHz;
(4) program control enlargement factor: 1,2,4,8;
(5) first-in first-out memory buffer: 32K;
(6) USB interface, passage scanning automatically, synchronous acquisition.
Claims (4)
1. gas concentration proving installation, it is characterized in that, proving installation is made up of thief hatch, the dried filtrator of making an uproar, infrared light supply, detection of gas chamber, interference filter, infrared eye, aspiration pump, signal amplifier and data processor, thief hatch and the dried filtrator of making an uproar join, the dried filtrator of making an uproar is connected to the detection of gas chamber, detection of gas chamber and infrared light supply, interference filter, infrared eye, aspiration pump join, infrared eye and signal amplifier join, and signal amplifier is connected with data processor.
2. gas concentration method of testing of utilizing the described device of claim 1, it is characterized in that, fire extinguishing agent is sucked from thief hatch by aspiration pump, by device for drying and filtering filtering dust, and after removing moisture content, the inflow gas detecting chamber, fire extinguishing agent acts on mutually with infrared light in detecting chamber, and the infrared light of specific wavelength is produced very strong absorption, and the optical routing two tunnel of detecting chamber is formed, the first via is a reference light paths, and the wavelength of its interference filter is chosen in the non-absorbent wave band of gas to be measured; The second the tunnel for measuring light path, and the wavelength of its interference filter is chosen in the tested gas infrared absorption wave band; Infrared eye is converted to electric signal with received light intensity signal, after signal amplifier amplifies, sends into data processor, is digital signal by data processor with analog signal conversion, carries out data analysis for computing machine and handles.
3. gas concentration method of testing according to claim 2 is characterized in that, described interference filter is the absorption bands different to infrared light according to tested gas, manufactures the interference filter of reference light paths and the interference filter of measurement light path respectively.
4. gas concentration method of testing according to claim 2 is characterized in that, the light path of described detecting chamber is measured when light path realizes multiple gases with measuring according to the kind increase reference light paths of tested gas.
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| CN 200910146704 CN101561391A (en) | 2009-06-04 | 2009-06-04 | Gas concentration measuring device and measuring method thereof |
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| CN 200910146704 CN101561391A (en) | 2009-06-04 | 2009-06-04 | Gas concentration measuring device and measuring method thereof |
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Cited By (18)
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| CN102323295A (en) * | 2011-09-30 | 2012-01-18 | 中广核工程有限公司 | System for monitoring concentration of hydrogen in containment vessel |
| CN102359948A (en) * | 2011-06-29 | 2012-02-22 | 中国科学院安徽光学精密机械研究所 | System and method for measuring greenhouse gas |
| CN102608060A (en) * | 2012-03-09 | 2012-07-25 | 深圳市理邦精密仪器股份有限公司 | High-reliability method and device for gas concentration measurement |
| CN102830084A (en) * | 2012-08-28 | 2012-12-19 | 苏州斯坦福仪器有限公司 | Sensor for online concentration detection of atmospherical inhalable particles |
| CN102954947A (en) * | 2012-11-05 | 2013-03-06 | 煤炭科学研究总院 | Dual light source four detector infrared gas sensor |
| CN103041882A (en) * | 2012-12-31 | 2013-04-17 | 苏州汶颢芯片科技有限公司 | Microfluidic chip for detecting polycyclic aromatic hydrocarbon in atmosphere and preparation method of microfluidic chip |
| CN103454379A (en) * | 2012-05-30 | 2013-12-18 | 深圳迈瑞生物医疗电子股份有限公司 | Gas measurement method and gas measurement device |
| CN103852439A (en) * | 2014-03-28 | 2014-06-11 | 北京雪迪龙科技股份有限公司 | Volatile organic compound monitoring equipment and method |
| CN104458633A (en) * | 2014-11-21 | 2015-03-25 | 广西智通节能环保科技有限公司 | Gas concentration measuring device |
| CN104833645A (en) * | 2015-05-13 | 2015-08-12 | 南京信息工程大学 | Gas sensor with adjustable range, sensing system and sensing method |
| CN104897602A (en) * | 2015-06-23 | 2015-09-09 | 中国航空工业集团公司西安飞机设计研究所 | Extinguishant concentration measuring sensor signal demodulation circuit |
| CN105588815A (en) * | 2016-03-08 | 2016-05-18 | 国网电力科学研究院武汉南瑞有限责任公司 | Infrared gas detector based on micro-airflow |
| CN106461546A (en) * | 2014-06-03 | 2017-02-22 | 株式会社村田制作所 | Measurement method and measurement system |
| CN107063774A (en) * | 2017-02-16 | 2017-08-18 | 中国石油化工股份有限公司 | Based on intrinsic safe explosion-proof gas sampling system |
| CN107490556A (en) * | 2017-04-19 | 2017-12-19 | 安徽华脉科技发展有限公司 | A kind of infrared combustable gas concentration detecting system |
| CN109477792A (en) * | 2016-07-11 | 2019-03-15 | 通用电气健康护理生物科学股份公司 | For measuring in solution the method for the absorptivity of substance and for this measuring device |
| CN109682770A (en) * | 2018-12-29 | 2019-04-26 | 中国船舶重工集团公司第七一八研究所 | A kind of multicomponent Freon gas infrared detecting device |
| CN109991187A (en) * | 2018-01-03 | 2019-07-09 | 佛山市南华仪器股份有限公司 | Volatile organic matter concentration detection apparatus and detection method |
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2009
- 2009-06-04 CN CN 200910146704 patent/CN101561391A/en active Pending
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359948A (en) * | 2011-06-29 | 2012-02-22 | 中国科学院安徽光学精密机械研究所 | System and method for measuring greenhouse gas |
| CN102323295A (en) * | 2011-09-30 | 2012-01-18 | 中广核工程有限公司 | System for monitoring concentration of hydrogen in containment vessel |
| CN102608060A (en) * | 2012-03-09 | 2012-07-25 | 深圳市理邦精密仪器股份有限公司 | High-reliability method and device for gas concentration measurement |
| CN103454379A (en) * | 2012-05-30 | 2013-12-18 | 深圳迈瑞生物医疗电子股份有限公司 | Gas measurement method and gas measurement device |
| CN103454379B (en) * | 2012-05-30 | 2016-04-20 | 深圳迈瑞生物医疗电子股份有限公司 | A kind of gas measuring method and device |
| CN102830084A (en) * | 2012-08-28 | 2012-12-19 | 苏州斯坦福仪器有限公司 | Sensor for online concentration detection of atmospherical inhalable particles |
| CN102954947A (en) * | 2012-11-05 | 2013-03-06 | 煤炭科学研究总院 | Dual light source four detector infrared gas sensor |
| CN103041882A (en) * | 2012-12-31 | 2013-04-17 | 苏州汶颢芯片科技有限公司 | Microfluidic chip for detecting polycyclic aromatic hydrocarbon in atmosphere and preparation method of microfluidic chip |
| CN103852439A (en) * | 2014-03-28 | 2014-06-11 | 北京雪迪龙科技股份有限公司 | Volatile organic compound monitoring equipment and method |
| CN106461546B (en) * | 2014-06-03 | 2019-10-18 | 株式会社村田制作所 | Measuring method and measurement system |
| CN106461546A (en) * | 2014-06-03 | 2017-02-22 | 株式会社村田制作所 | Measurement method and measurement system |
| CN104458633A (en) * | 2014-11-21 | 2015-03-25 | 广西智通节能环保科技有限公司 | Gas concentration measuring device |
| CN104833645A (en) * | 2015-05-13 | 2015-08-12 | 南京信息工程大学 | Gas sensor with adjustable range, sensing system and sensing method |
| CN104833645B (en) * | 2015-05-13 | 2017-05-10 | 南京信息工程大学 | Gas sensor with adjustable range, sensing system and sensing method |
| CN104897602A (en) * | 2015-06-23 | 2015-09-09 | 中国航空工业集团公司西安飞机设计研究所 | Extinguishant concentration measuring sensor signal demodulation circuit |
| CN105588815B (en) * | 2016-03-08 | 2018-08-07 | 国家电网公司 | A kind of infrared gas detector based on Tiny pore |
| CN105588815A (en) * | 2016-03-08 | 2016-05-18 | 国网电力科学研究院武汉南瑞有限责任公司 | Infrared gas detector based on micro-airflow |
| CN109477792A (en) * | 2016-07-11 | 2019-03-15 | 通用电气健康护理生物科学股份公司 | For measuring in solution the method for the absorptivity of substance and for this measuring device |
| CN107063774A (en) * | 2017-02-16 | 2017-08-18 | 中国石油化工股份有限公司 | Based on intrinsic safe explosion-proof gas sampling system |
| CN107490556A (en) * | 2017-04-19 | 2017-12-19 | 安徽华脉科技发展有限公司 | A kind of infrared combustable gas concentration detecting system |
| CN109991187A (en) * | 2018-01-03 | 2019-07-09 | 佛山市南华仪器股份有限公司 | Volatile organic matter concentration detection apparatus and detection method |
| CN109682770A (en) * | 2018-12-29 | 2019-04-26 | 中国船舶重工集团公司第七一八研究所 | A kind of multicomponent Freon gas infrared detecting device |
| CN109682770B (en) * | 2018-12-29 | 2024-04-09 | 中国船舶重工集团公司第七一八研究所 | Multicomponent freon gas infrared detection device |
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Open date: 20091021 |