CN102519905A - Method for detecting automobile exhaust gas - Google Patents
Method for detecting automobile exhaust gas Download PDFInfo
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- CN102519905A CN102519905A CN2011104165211A CN201110416521A CN102519905A CN 102519905 A CN102519905 A CN 102519905A CN 2011104165211 A CN2011104165211 A CN 2011104165211A CN 201110416521 A CN201110416521 A CN 201110416521A CN 102519905 A CN102519905 A CN 102519905A
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000003595 spectral effect Effects 0.000 claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 claims abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 7
- 238000005516 engineering process Methods 0.000 claims abstract description 6
- 238000000862 absorption spectrum Methods 0.000 claims abstract description 4
- 238000004451 qualitative analysis Methods 0.000 claims abstract description 4
- 230000005855 radiation Effects 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 47
- 238000001514 detection method Methods 0.000 claims description 19
- 238000005259 measurement Methods 0.000 claims description 7
- 239000002912 waste gas Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000001228 spectrum Methods 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 238000002329 infrared spectrum Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 150000001299 aldehydes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
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- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to a method for detecting an automobile exhaust gas, which belongs to the spectral test technology. The method which adopts a spectral technology to measure components in the automobile exhaust gas comprises the following steps: 1, carrying out qualitative analysis on the gas through an infrared absorption spectrum generated by selective absorption based on infrared radiation to design a measure system which is formed by a near-infrared light source, a closed gas chamber, a lens, a spectrometer with a built-in CCD detector, and a computer which are connected in series; and 2, allowing near-infrared lights emitted by the near-infrared light source to go through the closed gas chamber, simultaneously inputting a gas sample to be tested from the top of the closed gas chamber, obtaining information of the near-infrared spectrum permeating the closed gas chamber by an image acquiring device, inputting the information to the computer through a datum line, and further processing the information by software which is in the computer and corresponds with the spectrometer to obtain a spectrogram reflecting the gas components. The method has the advantages of rapid speed and high efficiency. Simultaneously, an exhaust gas collection chamber is convenient for recovering the experiment exhaust gas.
Description
Technical field
The invention belongs to the spectrum test technical scope, particularly a kind of vehicle exhaust detection method.
Background technology
Along with the raising of Chinese economic development and living standards of the people, automobile has become the walking-replacing tool of people's go off daily.Since the seventies in 20th century, owing to the raising of people to environmental requirement, automobile exhaust pollution more and more receives everybody concern.The major pollutants of Hyundai Motor comprise CO
2, CO, HC, NO
X, SO
2, solid particle, aldehydes etc., they not only can work the mischief to the healthy of the mankind, and can work the mischief to environment.Therefore, become the focal issue of social concerns for the detection of vehicle exhaust composition and control.The normally used vehicle exhaust detection method of China, test speed is slow, efficient is low, and not only also easy omission is produced in influence.The spectrum vehicle exhaust detects can improve above-mentioned shortcoming, and it has, and monitoring range is wide, speed is fast, cost is low, and is convenient to carry out long-term advantages such as dynamic monitoring.
This patent utilizes spectrum test technology for detection vehicle exhaust composition, the advantage that have fast, efficient is high.
Summary of the invention
The purpose of this invention is to provide a kind of vehicle exhaust detection method; It is characterized in that; Employing is carried out the qualitative analysis of gas based on the infrared absorption spectrum of the selectivity absorption generation of infrared radiation, promptly adopts the spectrometer measurement technology to carry out the measurement of vehicle exhaust composition; Comprise that step is following:
1) at first sets up the spectrometer measurement system; This measuring system is made up of the spectrometer 4 and computing machine 5 series connection of near-infrared light source 1, sealed gas chamber 2, lens 3, in-built CCD detector;
2) in detection; The near infrared light that is sent by near-infrared light source 1 passes through sealed gas chamber 2, and simultaneously, the input of sealed gas chamber 2 tops needs the gaseous sample of detection; Through the near infrared light in the air chamber; Sample gets into the accumulation chamber of waste gas of sealed gas chamber 2 belows, and image collecting device obtains to accomplish the transmission process of gas detection through the near infrared light spectral information behind the sealed gas chamber 2 in this process; Then,, select that the different optical path scope detects on the spectrometer for use, or above-mentioned different optical path scope is combined, simultaneously detected gas through Y type bifurcation fiber; Pass through the spectrum storage unit then, carry out processing, import in the computer through data line again, by further handling with the corresponding software of spectrometer in the computer detected spectral information; At last, analyze, obtain the concentration information of gas through computing machine 5;
3) concentration information of said acquisition gas is the spectrogram that reflects gas componant; According to the size of absorption peak, utilize formula:
Calculate the concentration of corresponding gas, wherein I is an output light light intensity, I
0Be input light light intensity, α is the absorption coefficient relevant with wavelength, and L is that the length of light and gas effect is the distance that light transmits in gas, and C is a gas concentration.
The spectrometer 4 of said lens 3 and in-built CCD detector is formed image collecting device.
Institute's sealed gas chamber 2 is made up of the material of adsorbing close infrared light not, has both prevented that exterior light from disturbing, and prevents the testing result indoor material influence of being bullied again.
The spectrometer 4 of said in-built CCD detector, it covers wavelength is 200-100nm or 1000-1800nm.
The invention has the beneficial effects as follows and adopt spectral technique to carry out the measurement of vehicle exhaust composition, it is fast to have speed, the advantage that efficient is high.Simultaneously, accumulation chamber of waste gas has also made things convenient for the recovery of experiment waste gas.
Description of drawings
Fig. 1 is the measuring system conceptual scheme.
Fig. 2 is the analyzing and processing process flow diagram.
The spectrogram of Fig. 3 gas componant.
Embodiment
The present invention provides a kind of vehicle exhaust detection method that adopts spectral technique to carry out the vehicle exhaust composition.Explain below in conjunction with accompanying drawing.
Shown in Figure 1 is the measuring system conceptual scheme.This measuring system is based on the qualitative analysis that infrared absorption spectrum that the selectivity of infrared radiation absorb to produce carries out gas and designs, and its measuring system structure constitutes for spectrometer 4 and computing machine 5 series connection by near-infrared light source 1, sealed gas chamber 2, lens 3, in-built CCD detector; Wherein the spectrometer 4 of lens 3 and in-built CCD detector is formed image collecting device; Sealed gas chamber 2 is made up of the material of adsorbing close infrared light not, has both prevented that exterior light from disturbing, and prevents the testing result indoor material influence of being bullied again.Image collecting device obtains through the spectral information behind the sealed gas chamber 2, and the concentration information that just obtains gas is also analyzed in 5 imagings through computing machine.
Fig. 2 is the analyzing and processing process flow diagram.It is the concrete structure synoptic diagram of Fig. 1.At first, near infrared light is provided,, imports in the transmission air chamber (being the sealed gas chamber 2 described in Fig. 1) that has designed through ordinary optic fibre by the light source halogen tungsten lamp; Through a pair of GRIN Lens, with near infrared light output, simultaneously; The input of transmission air chamber top needs the gas sample of detection, through the near infrared light in the air chamber, gets into the accumulation chamber of waste gas of transmission air chamber below; Accomplish the transmission process of gas detection, simultaneously, accumulation chamber of waste gas has also made things convenient for the recovery of experiment waste gas; Then,, can select that the different optical path scope detects on the spectrometer for use, also can two light path scopes be combined, simultaneously detected gas through Y type bifurcation fiber; Pass through spectrum storage unit (being equivalent to image collecting device among Fig. 1) then, carry out processing, import in the computer through data line again, by further processing and handle with the corresponding software of spectrometer in the computer detected spectral information; At last, obtain to reflect the spectrogram (like Fig. 3) of gas componant.Among Fig. 3, can utilize formula according to the size of absorption peak:
Wherein I is an output light light intensity, I
0Be input light light intensity, α is absorption coefficient (relevant with wavelength), and L is the length (being the distance that light transmits in gas) of light and gas effect, and C is a gas concentration, calculates the concentration of corresponding gas.
Claims (4)
1. a vehicle exhaust detection method is characterized in that, employing is carried out the qualitative analysis of gas based on the infrared absorption spectrum of the selectivity absorption generation of infrared radiation, promptly adopts the spectrometer measurement technology to carry out the measurement of vehicle exhaust composition; Comprise that step is following:
1) at first sets up the spectrometer measurement system; This measuring system is made up of the spectrometer (4) and computing machine (5) series connection of near-infrared light source (1), sealed gas chamber (2), lens (3), in-built CCD detector;
2) in detection; The near infrared light that is sent by near-infrared light source (1) passes through sealed gas chamber (2), and simultaneously, the input of sealed gas chamber (2) top needs the gaseous sample of detection; Through the near infrared light in the air chamber; Sample gets into the accumulation chamber of waste gas of sealed gas chamber (2) below, and image collecting device obtains to accomplish the transmission process of gas detection through the near infrared light spectral information behind the sealed gas chamber (2) in this process; Then,, select that the different optical path scope detects on the spectrometer for use, or above-mentioned different optical path scope is combined, simultaneously detected gas through Y type bifurcation fiber; Pass through the spectrum storage unit then, carry out processing, import in the computer through data line again, by further handling with the corresponding software of spectrometer in the computer detected spectral information; At last, analyze, obtain the concentration information of gas through computing machine (5);
3) concentration information of said acquisition gas is the spectrogram that reflects gas componant; According to the size of absorption peak, utilize formula:
Calculate the concentration of corresponding gas, wherein I is an output light light intensity, I
0Be input light light intensity, α is the absorption coefficient relevant with wavelength, and L is that the length of light and gas effect is the distance that light transmits in gas, and C is a gas concentration.
2. according to the said a kind of vehicle exhaust detection method of claim 1, it is characterized in that the spectrometer (4) of said lens (3) and in-built CCD detector is formed image collecting device.
3. according to the said a kind of vehicle exhaust detection method of claim 1, it is characterized in that institute's sealed gas chamber (2) is made up of the material of adsorbing close infrared light not, both prevented that exterior light from disturbing, prevent the testing result indoor material influence of being bullied again.
4. according to the said a kind of vehicle exhaust detection method of claim 1, it is characterized in that, the spectrometer of said in-built CCD detector (4), it covers wavelength is 200-100nm or 1000-1800nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104165211A CN102519905A (en) | 2011-12-14 | 2011-12-14 | Method for detecting automobile exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104165211A CN102519905A (en) | 2011-12-14 | 2011-12-14 | Method for detecting automobile exhaust gas |
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|---|---|
| CN102519905A true CN102519905A (en) | 2012-06-27 |
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| CN2011104165211A Pending CN102519905A (en) | 2011-12-14 | 2011-12-14 | Method for detecting automobile exhaust gas |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344579A (en) * | 2013-07-23 | 2013-10-09 | 房甲敏 | Online monitoring instrument and method for drug |
| CN104874268A (en) * | 2015-06-02 | 2015-09-02 | 成都虹华环保科技股份有限公司 | Intake passage for organic waste gas treating system |
| CN104874238A (en) * | 2015-06-02 | 2015-09-02 | 成都虹华环保科技股份有限公司 | Discharging passage for organic waste gas treating system |
| CN104880416A (en) * | 2015-06-02 | 2015-09-02 | 成都虹华环保科技股份有限公司 | Gas analyzer for organic waste gas treating system |
| CN108872097A (en) * | 2018-09-27 | 2018-11-23 | 南京工程学院 | A kind of specific gas derived components spectroscopic analysis methods and device |
| CN110552760A (en) * | 2019-07-24 | 2019-12-10 | 扬州工业职业技术学院 | Automobile exhaust detection and purification method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030184733A1 (en) * | 2002-03-29 | 2003-10-02 | Masaru Kameoka | Combined analizing apparatus |
| CN2689222Y (en) * | 2003-09-25 | 2005-03-30 | 复旦大学 | Near infrared spectrograph with 0.7-1.7 micron wave bands |
| WO2006130016A1 (en) * | 2005-05-31 | 2006-12-07 | Norsk Elektro Optikk As | Apparatus and method for reducing interfering signals from atmospheric gases in optical measurement of gas in sealed processes or containers |
| CN101105446A (en) * | 2007-01-19 | 2008-01-16 | 华南理工大学 | Differential optical absorption spectroscopy air quality detection system |
| CN201285372Y (en) * | 2008-10-16 | 2009-08-05 | 陈红岩 | Wireless sensor system for measuring tail gas of automobile |
| CN102192892A (en) * | 2010-01-28 | 2011-09-21 | 诺基亚公司 | Infrared spectroscopy |
-
2011
- 2011-12-14 CN CN2011104165211A patent/CN102519905A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030184733A1 (en) * | 2002-03-29 | 2003-10-02 | Masaru Kameoka | Combined analizing apparatus |
| CN2689222Y (en) * | 2003-09-25 | 2005-03-30 | 复旦大学 | Near infrared spectrograph with 0.7-1.7 micron wave bands |
| WO2006130016A1 (en) * | 2005-05-31 | 2006-12-07 | Norsk Elektro Optikk As | Apparatus and method for reducing interfering signals from atmospheric gases in optical measurement of gas in sealed processes or containers |
| CN101105446A (en) * | 2007-01-19 | 2008-01-16 | 华南理工大学 | Differential optical absorption spectroscopy air quality detection system |
| CN201285372Y (en) * | 2008-10-16 | 2009-08-05 | 陈红岩 | Wireless sensor system for measuring tail gas of automobile |
| CN102192892A (en) * | 2010-01-28 | 2011-09-21 | 诺基亚公司 | Infrared spectroscopy |
Non-Patent Citations (1)
| Title |
|---|
| 万隆: "五组分汽车尾气分析系统设计", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344579A (en) * | 2013-07-23 | 2013-10-09 | 房甲敏 | Online monitoring instrument and method for drug |
| CN104874268A (en) * | 2015-06-02 | 2015-09-02 | 成都虹华环保科技股份有限公司 | Intake passage for organic waste gas treating system |
| CN104874238A (en) * | 2015-06-02 | 2015-09-02 | 成都虹华环保科技股份有限公司 | Discharging passage for organic waste gas treating system |
| CN104880416A (en) * | 2015-06-02 | 2015-09-02 | 成都虹华环保科技股份有限公司 | Gas analyzer for organic waste gas treating system |
| CN104874268B (en) * | 2015-06-02 | 2017-07-21 | 成都虹华环保科技股份有限公司 | A kind of organic waste gas treatment system inlet channel |
| CN108872097A (en) * | 2018-09-27 | 2018-11-23 | 南京工程学院 | A kind of specific gas derived components spectroscopic analysis methods and device |
| CN110552760A (en) * | 2019-07-24 | 2019-12-10 | 扬州工业职业技术学院 | Automobile exhaust detection and purification method |
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Application publication date: 20120627 |