CN112945876A - Method for generating gas vector to be measured - Google Patents
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- 239000013598 vector Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000002835 absorbance Methods 0.000 claims abstract description 52
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 238000001228 spectrum Methods 0.000 claims abstract description 5
- 230000003595 spectral effect Effects 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 19
- 230000007613 environmental effect Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
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Abstract
The invention provides a method for generating a gas vector to be detected, which comprises the following steps: (A1) inputting gas parameters to be detected and system parameters in a spectrum standard database; (A2) the output is respectively related to the concentration C of the gas to be measured1，C2···Cn‑1，CnAbsorbance A in one-to-one correspondence1，A2···An‑1，An(ii) a (A3) Respectively introducing concentration C into gas detection systems1、CnRespectively obtained and the concentration C of the gas to be measured1、CnAbsorbance V in one-to-one correspondence1、Vn(ii) a (A4) According to the absorbance A1、AnAnd absorbance V1、VnObtaining the coefficients
(A5) According to the coefficient and the absorbance A2，A3···An‑1Obtaining the concentrations C2···Cn‑1One-to-one corresponding suctionLuminosity V2，V3···Vn‑1(ii) a (A6) According to the absorbance V1，V2，V3···Vn‑1，VnAnd concentration C1，C2···CnAnd fitting the vector of the gas to be measured. The invention has the advantages of simplicity, high efficiency and the like.
Description
Technical Field
The invention relates to gas detection, in particular to a method for generating a vector of gas to be detected.
Background
The environmental monitoring is the basic work of environmental protection and is the technical basis of environmental law enforcement supervision. The monitoring data can be used as a legal basis for environment law enforcement supervision, and the technical level of the monitoring data plays an important role in mastering the pollution status and predicting the development trend.
At present, the most widely applied gaseous pollutant monitoring systems are all based on photoelectric detection technology, and can accurately distinguish the detected pollutants according to the characteristic absorption spectrum of the detected components, and calculate the concentration information of the pollutants according to the beer Lambert law.
In order to accurately calculate the concentration of the gas to be measured, a corresponding relationship between the response of the analyzer and the concentration of the gas to be measured needs to be established, that is, vector generation is performed.
The current vector generation method mainly depends on introducing gas to be detected with step concentration, recording corresponding absorbance, and establishing a corresponding relation between the absorbance and the concentration through a reasonable algorithm. In order to improve the fitting accuracy, the absorbance information of 6 or more concentration points needs to be collected, and in addition, vectors need to be reestablished between different analyzers due to the difference between the initial light intensity and the system transfer function, so that the workload is large.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a method for generating a gas vector to be detected.
The purpose of the invention is realized by the following technical scheme:
the method for generating the gas vector to be detected comprises the following steps:
(A1) inputting parameters of the gas to be detected in a spectrum standard database, wherein the parameters of the gas to be detected comprise temperature, pressure, optical path and concentration C1，C2···CnConcentration C of1，C2···CnIs increasing in size, C1＝0，CnIs full scale concentration, n is an integer greater than 3;
(A2) the output is respectively corresponding to the concentration C1，C2···Cn-1，CnAbsorbance A in one-to-one correspondence1，A2···An-1，An；
(A3) Respectively introducing concentration C into gas detection systems1、CnRespectively obtained and the concentration C of the gas to be measured1、CnAbsorbance V in one-to-one correspondence1、Vn；
(A4) According to the absorbance A1、AnAnd absorbance V1、VnObtaining the coefficients
(A5) According to the coefficient and the absorbance A2，A3···An-1Obtaining the concentrations C2···Cn-1Absorbance V in one-to-one correspondence2，V3···Vn-1；
(A6) According to the absorbance V1，V2，V3···Vn-1，VnAnd concentration C1，C2···CnAnd fitting the vector of the gas to be measured.
Compared with the prior art, the invention has the beneficial effects that:
1. the establishment of the gas vector to be detected only needs to determine the absorbance of the zero point and the full-scale point of the system, thereby simplifying the vector establishment process;
2. the vector establishing time is shortened, the influence of environmental factors such as temperature, vibration and the like in the vector establishing process can be effectively reduced, and the vector accuracy is improved;
3. only zero gas and full-range gas need to be introduced into the detection system, so that the error caused by flow control when the gas distribution instrument generates gas to be detected with different concentrations is reduced;
4. the production efficiency of a gas analyzer based on the spectral absorption principle is improved, and particularly the gas analyzer is used for simultaneously measuring a plurality of gas components.
Drawings
The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are only for illustrating the technical solutions of the present invention and are not intended to limit the scope of the present invention. In the figure:
fig. 1 is a flowchart of a method for generating a vector of gas to be measured according to embodiment 1 of the present invention.
Detailed Description
Fig. 1 and the following description depict alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. Some conventional aspects have been simplified or omitted for the purpose of explaining the technical solution of the present invention. Those skilled in the art will appreciate that variations or substitutions from these embodiments will be within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. Thus, the present invention is not limited to the following alternative embodiments, but is only limited by the claims and their equivalents.
Example 1:
fig. 1 schematically shows a flowchart of a method for generating a gas vector to be measured according to an embodiment of the present invention, and as shown in fig. 1, the method for generating a gas vector to be measured includes the following steps:
(A1) inputting parameters of the gas to be detected in a spectrum standard database, wherein the parameters of the gas to be detected comprise temperature, pressure, optical path and concentration C1，C2···CnConcentration C of1，C2···CnIs increasing in size, C1＝0，CnIs full scale concentration, n is an integer greater than 3;
(A2) the output is respectively corresponding to the concentration C1，C2···Cn-1，CnAbsorbance A in one-to-one correspondence1，A2···An-1，An；
(A3) Respectively introducing concentration C into gas detection systems1、CnRespectively obtained and the concentration C of the gas to be measured1、CnAbsorbance V in one-to-one correspondence1、Vn；
(A4) According to the absorbance A1、AnAnd absorbance V1、VnObtaining the coefficients
(A5) According to the coefficient and the absorbance A2，A3···An-1Obtaining the concentrations C2···Cn-1Absorbance V in one-to-one correspondence2，V3···Vn-1；
(A6) According to the absorbance V1，V2，V3···Vn-1，VnAnd concentration C1，C2···CnAnd fitting the vector of the gas to be measured.
To improve the accuracy of the absorbance, further, the absorbance V2，V3···Vn-1The obtaining method is as follows:
Vi+1＝Vi+K·(Ai+1-Ai)，i＝1,2···(n-2)。
in order to improve the accuracy of the vector, further, in step (a6), the vector of the gas to be measured is:
C＝B+D·V+F·V2c is the concentration of the gas to be measured, B, D and F are coefficients respectively, and V is the absorbance.
To improve the accuracy of the absorbance output by the spectral calibration database, further, in step (a1), system parameters are input into the spectral calibration database, the system parameters including the start and cut-off wavelengths of the filter devices employed by the system.
Example 2:
an application example of the method for generating a vector of gas to be measured according to embodiment 1 of the present invention.
In this application example, the method for generating the vector of the gas to be measured includes the following steps:
(A1) inputting sulfur dioxide gas parameters and system parameters in a spectral standard database Spectropolot, wherein the sulfur dioxide parameters comprise temperature, pressure, optical path and concentration C1，C2···C6Concentration C of1，C2···C6Increasing in gradient, C1＝0，C6To full scale concentration, C2＝0.2C6、C3＝0.4C6、C4＝0.6C6、C5＝0.8C6(ii) a The system parameters comprise the starting and cut-off wavelengths of the filter devices adopted by the system;
(A2) the output is respectively corresponding to the concentration C1，C2···C5，C6Absorbance A in one-to-one correspondence1，A2···A5，A6As shown in table 1 below;
| SO2concentration of | C1 | C2 | C3 | C4 | C5 | C6 |
| Absorbance A | 0 | 0.0188 | 0.0376 | 0.0562 | 0.0749 | 0.0934 |
(A3) Respectively introducing concentration C into gas detection systems1、C6Respectively obtained and concentration C of sulfur dioxide1、C6Absorbance V in one-to-one correspondence1、V6；
(A4) According to the absorbance A1、A6And absorbance V1、V6Obtaining the coefficients
(A5) According to the coefficient and the absorbance A2，A3···A5Obtaining the concentrations C2···C5Absorbance V in one-to-one correspondence2，V3···V5As shown in table 2 below;
(A6) according to the absorbance V1，V2，V3···V5，V6And concentration C1，C2···C6Fitting a sulfur dioxide vector:
C＝-264.33729+439.80789·V+39.74759·V2。
in contrast to the above-described manner,the concentration C1，C2···C6The sulfur dioxide gas (es) was passed into the detection system and the data obtained in practice are shown in table 3 below:
example 3:
an application example of the method for generating a vector of gas to be measured according to embodiment 1 of the present invention.
In this application example, the method for generating the vector of the gas to be measured includes the following steps:
(A1) inputting sulfur dioxide gas parameters and system parameters in a spectral standard database Spectropolot, wherein the sulfur dioxide parameters comprise temperature, pressure, optical path and concentration C1，C2···C6Concentration C of1，C2···C6Increasing in gradient, C1＝0，C6To full scale concentration, C2＝0.2C6、C3＝0.4C6、C4＝0.6C6、C5＝0.8C6(ii) a The system parameters comprise the starting and cut-off wavelengths of the filter devices adopted by the system;
(A2) the output is respectively corresponding to the concentration C1，C2···C5，C6Absorbance A in one-to-one correspondence1，A2···A5，A6；
(A3) Respectively introducing concentration C into gas detection systems1、C6Respectively obtained and concentration C of sulfur dioxide1、C6Absorbance V in one-to-one correspondence1、V6；
(A4) According to the absorbance A1、A6And absorbance V1、V6Obtaining the coefficients
(A5) According to the coefficient and the absorbance A2，A3···A5Obtain a differenceAnd concentration C2···C5Absorbance V in one-to-one correspondence2，V3···V5As shown in table 4 below;
(A6) according to the absorbance V1，V2，V3···V5，V6And concentration C1，C2···C6Fitting a sulfur dioxide vector:
C＝-533.64649+1322.78161·V-289.48468·V2。
comparing with the above manner, the concentration C1，C2···C6The sulfur dioxide gas (es) was passed into the detection system and the data obtained in practice are shown in table 5 below:
Claims (6)
1. the method for generating the gas vector to be detected comprises the following steps:
(A1) inputting parameters of the gas to be detected in a spectrum standard database, wherein the parameters of the gas to be detected comprise temperature, pressure, optical path and concentration C1，C2···CnConcentration C of1，C2···CnIs increasing in size, C1＝0，CnIs full scale concentration, n is an integer greater than 3;
(A2) the output is respectively corresponding to the concentration C1，C2···Cn-1，CnAbsorbance A in one-to-one correspondence1，A2···An-1，An；
(A3) Respectively introducing concentration C into gas detection systems1、CnRespectively obtained and the concentration C of the gas to be measured1、CnAbsorbance V in one-to-one correspondence1、Vn；
(A4) According to the absorbance A1、AnAnd absorbance V1、VnObtaining the coefficients
(A5) According to the coefficient and the absorbance A2，A3···An-1Obtaining the concentrations C2···Cn-1Absorbance V in one-to-one correspondence2，V3···Vn-1；
(A6) According to the absorbance V1，V2，V3···Vn-1，VnAnd concentration C1，C2···CnAnd fitting the vector of the gas to be measured.
2. The method according to claim 1, wherein C is the gas vector to be measured1，C2···CnAnd the gradient change is realized.
3. The method for generating a gas vector to be measured according to claim 1, wherein the absorbance V is2，V3···Vn-1The obtaining method is as follows:
Vi+1＝Vi+K·(Ai+1-Ai)，i＝1,2···(n-2)。
4. the method for generating a gas vector to be measured according to claim 1, wherein in step (a6), the gas vector to be measured is:
C＝B+D·V+F·V2c is the concentration of the gas to be measured, B, D and F are coefficients respectively, and V is the absorbance.
5. The method for generating a gas vector under test as recited in claim 1, wherein in step (a1), system parameters are entered in a spectral criteria database, said system parameters including the start and cut-off wavelengths of the filter devices employed by the system.
6. The method for generating a gas vector to be measured according to claim 1, wherein the spectrum standard database is a Spectroplaot.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916810A (en) * | 2021-09-27 | 2022-01-11 | 聚光科技(杭州)股份有限公司 | Method for analyzing concentration of multi-component gas |
| CN117368132A (en) * | 2023-12-07 | 2024-01-09 | 杭州泽天春来科技股份有限公司 | Malodorous gas detection method and device and computer equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110032516A1 (en) * | 2009-06-12 | 2011-02-10 | Xin Zhou | Optical Absorbance Measurements With Self-Calibration And Extended Dynamic Range |
| CN103592261A (en) * | 2013-11-20 | 2014-02-19 | 天津大学 | All-fiber temperature compensating gas sensor and compensating method thereof |
| CN106769974A (en) * | 2016-11-23 | 2017-05-31 | 合肥金星机电科技发展有限公司 | Gas concentration Two dimensional Distribution on-line detecting system and method |
| CN108414461A (en) * | 2018-02-05 | 2018-08-17 | 佛山科学技术学院 | A method of improving silicate component measuring accuracy |
| CN108680523A (en) * | 2018-07-10 | 2018-10-19 | 北京北分瑞利分析仪器(集团)有限责任公司 | It is connected the determinand assay method of standard curve using a variety of fit approach |
| CN109799203A (en) * | 2019-01-26 | 2019-05-24 | 上海交通大学 | A kind of wide-range high-precision spectral method of detection of COD in water body concentration |
-
2021
- 2021-01-29 CN CN202110124815.0A patent/CN112945876B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110032516A1 (en) * | 2009-06-12 | 2011-02-10 | Xin Zhou | Optical Absorbance Measurements With Self-Calibration And Extended Dynamic Range |
| CN103592261A (en) * | 2013-11-20 | 2014-02-19 | 天津大学 | All-fiber temperature compensating gas sensor and compensating method thereof |
| CN106769974A (en) * | 2016-11-23 | 2017-05-31 | 合肥金星机电科技发展有限公司 | Gas concentration Two dimensional Distribution on-line detecting system and method |
| CN108414461A (en) * | 2018-02-05 | 2018-08-17 | 佛山科学技术学院 | A method of improving silicate component measuring accuracy |
| CN108680523A (en) * | 2018-07-10 | 2018-10-19 | 北京北分瑞利分析仪器(集团)有限责任公司 | It is connected the determinand assay method of standard curve using a variety of fit approach |
| CN109799203A (en) * | 2019-01-26 | 2019-05-24 | 上海交通大学 | A kind of wide-range high-precision spectral method of detection of COD in water body concentration |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916810A (en) * | 2021-09-27 | 2022-01-11 | 聚光科技(杭州)股份有限公司 | Method for analyzing concentration of multi-component gas |
| CN113916810B (en) * | 2021-09-27 | 2023-11-10 | 聚光科技(杭州)股份有限公司 | Multi-component gas concentration analysis method |
| CN117368132A (en) * | 2023-12-07 | 2024-01-09 | 杭州泽天春来科技股份有限公司 | Malodorous gas detection method and device and computer equipment |
| CN117368132B (en) * | 2023-12-07 | 2024-02-27 | 杭州泽天春来科技股份有限公司 | Malodorous gas detection method and device and computer equipment |
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