A modular Fourier infrared gas analysis device

Abstract

The present invention discloses a modular Fourier infrared gas analysis device, which includes: an analysis module for performing visual analysis on a target mixed gas, identifying whether there is corrosive gas in the target mixed gas according to the analysis result, and obtaining the identification result; a selection module for selecting an introduction gas chamber for the target mixed gas according to the identification result, wherein the introduction gas chamber includes: a one-way gas chamber for ordinary materials and a one-way gas chamber for anti-corrosion materials; a setting module for detecting the current humidity data of the target mixed gas and setting the target signal sampling frequency of the infrared sensor according to the humidity data; a sampling and analysis module for controlling the infrared sensor to perform gas sampling on the target mixed gas introduced into the one-way gas chamber according to the target signal sampling frequency, and performing quantitative analysis on the gas composition and concentration of the target mixed gas according to the sampling signal. The storage gas chamber of the container can be effectively protected, the service life of the equipment is improved, and the rationality of the detection results and analysis results is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of gas detection, and in particular to a modular Fourier infrared gas analysis device. Background Art

[0002] Spectral analysis occupies an important position in the field of analytical chemistry. The United States still requires pharmaceutical companies to provide the Food and Drug Administration with infrared spectra of each drug to prove that the drug ingredients are consistent with the actual declared ingredients. It is only because the characteristic spectra of various substances overlap seriously, especially when the target substances analyzed have the same groups. So it is difficult to distinguish. If a spectrum of a mixture of these gases is given, it is even more difficult to distinguish which components are contained in the mixture and the concentration of various gases. Initially, due to the low level of computers, only very experienced technicians could make reasonable judgments on the recognition of spectra. Therefore, with the emergence of chromatographs and mass spectrometers, spectrometers have gradually been used as an auxiliary instrument in production, quality inspection and scientific research. Although the spectral signals of various gases overlap seriously, there are no substances with exactly the same absorption spectra. Therefore, as long as the components are different, the spectra are always different. Based on these differences, it is always possible to distinguish which components are contained in the mixed gas and how much the concentration of each component is. At present, with the development of computer technology, signal processing technology, etc., this possibility has become a reality. Fourier infrared gas analyzers can analyze the components in gas samples through relevant gas analysis technologies, thereby realizing the detection of pollution conditions. In the relevant technologies, Fourier infrared gas analyzers include remote sensing, portable and vehicle-mounted types.

[0003] Existing Fourier infrared gas analyzers all introduce the gas to be analyzed into their own gas storage tank for infrared signal sampling and then perform quantitative analysis of the gas composition based on the spectrum. There are the following problems: due to the complex composition of the gas, it may contain corrosive gases that damage the gas storage tank. At the same time, the signal sampling frequency is fixed, resulting in a large deviation between the detection results and the analysis results, reducing the reference value of the data and the user experience. Summary of the invention

[0004] In response to the above-mentioned problems, the present invention provides a modular Fourier infrared gas analysis device to solve the problem mentioned in the background technology that due to the complex composition of the gas, it may contain corrosive gases and thus damage the gas tank. At the same time, the signal sampling frequency is unchanged, resulting in a large deviation between the detection results and the analysis results, reducing the reference value of the data and the user experience.

[0005] A modular Fourier infrared gas analysis device, comprising:

[0006] An analysis module is used to perform a visual analysis on the target mixed gas, identify whether there is corrosive gas in the target mixed gas according to the analysis result, and obtain the identification result;

[0007] A selection module is used to select an inlet gas chamber for the target mixed gas according to the identification result, wherein the inlet gas chamber includes: a one-way gas chamber for common materials and a one-way gas chamber for anti-corrosion materials;

[0008] A setting module, used to detect the current humidity data of the target mixed gas, and set the target signal sampling frequency of the infrared sensor according to the current humidity data;

[0009] The sampling and analysis module is used to control the infrared sensor to perform gas sampling on the target mixed gas introduced into the one-way gas chamber according to the sampling frequency of the target signal, and to perform quantitative analysis on the gas composition and concentration of the target mixed gas according to the sampling signal.

[0010] Preferably, the analysis module comprises:

[0011] A collection submodule, used for collecting a spatial three-dimensional image of the target mixed gas in the loaded object, and generating a multi-view image according to the spatial three-dimensional image;

[0012] An analysis submodule, used to perform texture analysis on the inner wall of the loaded object according to the multi-view images and obtain texture analysis results;

[0013] An identification submodule is used to determine the integrity of the inner wall of the loaded object according to the texture analysis result, identify whether there is corrosive gas in the target mixed gas according to the integrity, and obtain the identification result;

[0014] The output submodule is used to determine the storage medium of the target mixed gas according to the identification result and generate a storage instruction according to the storage medium.

[0015] Preferably, the selection module includes:

[0016] A first determination submodule, used to determine a plurality of first introduction modes of the target mixed gas according to the identification result;

[0017] A first detection submodule is used to detect volatility characteristic parameters of the target mixed gas, and select a second introduction method from a plurality of first introduction methods according to the volatility characteristic parameters;

[0018] The second determining submodule is used to select an introduction gas chamber for the target mixed gas according to a second introduction method.

[0019] Preferably, the setting module includes:

[0020] The second detection submodule is used to detect the current humidity data of the target mixed gas using a humidity sensor;

[0021] A third determination submodule is used to determine the signal sampling frequency interval of the infrared sensor at the current humidity based on the preset humidity-sampling frequency comparison table according to the current humidity data of the target mixed gas;

[0022] The first acquisition submodule is used to acquire the working parameters and configuration information of the infrared sensor, and select the target signal sampling frequency adapted by the infrared sensor in the signal sampling frequency range according to the working parameters and configuration information;

[0023] The setting submodule is used to set the sampling frequency of the infrared sensor based on the target signal sampling frequency.

[0024] Preferably, the sampling and analysis module includes:

[0025] A control submodule, used for controlling the infrared sensor to perform gas sampling on the target mixed gas introduced into the one-way gas chamber at the target signal sampling frequency to obtain an infrared sampling signal;

[0026] A generating submodule, used for performing Fourier transform on the infrared sampling signal to generate a first infrared spectrum;

[0027] A correction submodule, used to correct the spectral lines in the first infrared spectrum to obtain a second infrared spectrum;

[0028] The quantitative analysis submodule is used to perform quantitative analysis on the gas composition and concentration of the target mixed gas based on the second infrared spectrum.

[0029] Preferably, the generating submodule comprises:

[0030] A detection unit, used for detecting a plurality of signal frequencies in the infrared sampling signal;

[0031] A comparison unit is used to compare the multiple signal frequencies with the target signal sampling frequency, and obtain interference signals and noise signals in the infrared sampling signal according to the comparison result and remove them;

[0032] A processing unit, used for performing Fourier transform processing on the processed infrared sampling signal to obtain a frequency domain signal;

[0033] The generating unit is used to generate a first infrared spectrum corresponding to the target mixed gas according to the frequency signal.

[0034] Preferably, the correction submodule includes:

[0035] The first determination unit is used to determine the infrared absorption characteristics of the infrared sensor for various preset gases, and at the same time, determine the content of chemical elements in the target mixed gas, and predict the components present in the target mixed gas according to the content of chemical elements;

[0036] A second determining unit, used for determining the local distortion spectral line in the first infrared spectrum according to the infrared absorption characteristics and the components present in the target mixed gas;

[0037] A calculation unit, used for calculating a standard spectrum value of the local distortion spectrum line according to a current spectrum value of the local distortion spectrum line and an infrared signal scattering error of a component present in a target mixed gas;

[0038] The first acquisition unit is used to replace the current spectrum value of the local distortion spectrum line with the standard spectrum value, and acquire the second infrared spectrum according to the replacement result.

[0039] Preferably, the quantitative analysis submodule includes:

[0040] A third determination unit, used to determine the gas composition of the target mixed gas according to the second infrared spectrum and a preset mapping spectrum comparison table of different gases;

[0041] an extraction unit, used for respectively extracting a target mapping spectrum of each gas component in the second infrared spectrum;

[0042] The second acquisition unit is used to obtain the amplitude change in the target mapping spectrum of each gas component, construct a gas content change curve of each gas component in the target mixed gas according to the amplitude change, and take the average value of the peak and valley values ​​in the change curve as the gas content of each gas component;

[0043] The fourth determination unit is used to determine the concentration of each gas component according to the spectral color depth of the target mapping spectrum of the gas component.

[0044] Preferably, the device is implemented by the following method, comprising the following steps:

[0045] Performing visual analysis on the target mixed gas, identifying whether there is corrosive gas in the target mixed gas according to the analysis result, and obtaining the identification result;

[0046] Selecting an inlet gas chamber for the target mixed gas according to the identification result, wherein the inlet gas chamber includes: a one-way gas chamber for common materials and a one-way gas chamber for anti-corrosion materials;

[0047] Detect the current humidity data of the target mixed gas, and set the target signal sampling frequency of the infrared sensor according to the current humidity data;

[0048] The infrared sensor is controlled according to the sampling frequency of the target signal to perform gas sampling on the target mixed gas introduced into the one-way gas chamber, and the gas composition and concentration of the target mixed gas are quantitatively analyzed according to the sampling signal.

[0049] Preferably, the second determining unit determines the local distortion spectral line in the first infrared spectrum according to the infrared absorption characteristics and the components present in the target mixed gas, including:

[0050] Obtain the diffusion range and light absorption of each preset gas in a fixed area;

[0051] Based on the infrared absorption characteristics of each preset gas, a matching function of each preset gas is determined by curve fitting and least squares analysis based on the diffusion range and light absorption of the preset gas in a fixed area;

[0052] Determine the target preset gas that is likely to exist in the target mixed gas according to the components existing in the target mixed gas;

[0053] Matching a line spectrum array of each target preset gas in a first infrared spectrum using a target matching function of the target preset gas;

[0054] Detecting the array signal of the line spectrum array of each target preset gas, and calculating the relative time delay vector in the array signal;

[0055] Constructing a spectrum array curve of each target preset gas according to the relative time delay vector of the array signal of the target preset gas;

[0056] Judging whether the spectrum array curve of each target preset gas is qualified according to the gas reaction characteristics of the target preset gas;

[0057] The first target preset gas with qualified spectral array curve is excluded, and the second target preset gas with unqualified spectral array curve is screened out;

[0058] Acquire a spectrum signal of a second target preset gas and perform Fourier transform on the signal to obtain a spectrum function;

[0059] Determine a peak spectrum line according to the spectrum function of the second target preset gas, and determine the ideal harmonic order of the second target preset gas according to the peak spectrum line;

[0060] The ideal harmonic order and the actual harmonic order of the second target preset gas are compared. If the two are consistent, the infrared spectrum of the second target preset gas is determined to be a normal spectrum. If the two are inconsistent, the infrared spectrum of the second target preset gas is determined to be a distorted spectrum.

[0061] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0062] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0064] Figure 1 A schematic structural diagram of a modular Fourier infrared gas analysis device provided by the present invention;

[0065] Figure 2 A schematic diagram of the structure of an analysis module in a modular Fourier infrared gas analysis device provided by the present invention;

[0066] Figure 3 A schematic diagram of the structure of the modules in the modular Fourier infrared gas analysis device provided by the present invention;

[0067] Figure 4 A schematic diagram of the structure of a sampling and analysis module in a modular Fourier infrared gas analysis device provided by the present invention;

[0068] Figure 5 This is a schematic diagram of the structure of a generation submodule in a modular Fourier infrared gas analysis device provided by the present invention;

[0069] Figure 6 This is a workflow diagram of a method for implementing a modular Fourier infrared gas analysis device provided by the present invention. DETAILED DESCRIPTION

[0070] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0071] Spectral analysis occupies an important position in the field of analytical chemistry. The United States still requires pharmaceutical companies to provide the Food and Drug Administration with infrared spectra of each drug to prove that the drug ingredients are consistent with the actual declared ingredients. It is only because the characteristic spectra of various substances overlap seriously, especially when the target substances analyzed have the same groups. So it is difficult to distinguish. If a spectrum of a mixture of these gases is given, it is even more difficult to distinguish which components are contained in the mixture and the concentration of various gases. Initially, due to the low level of computers, only very experienced technicians could make reasonable judgments on the recognition of spectra. Therefore, with the emergence of chromatographs and mass spectrometers, spectrometers have gradually been used as an auxiliary instrument in production, quality inspection and scientific research. Although the spectral signals of various gases overlap seriously, there are no substances with exactly the same absorption spectra. Therefore, as long as the components are different, the spectra are always different. Based on these differences, it is always possible to distinguish which components are contained in the mixed gas and how much the concentration of each component is. At present, with the development of computer technology, signal processing technology, etc., this possibility has become a reality. Fourier infrared gas analyzers can analyze the components in gas samples through relevant gas analysis technologies, thereby realizing the detection of pollution conditions. In the relevant technologies, Fourier infrared gas analyzers include remote sensing, portable and vehicle-mounted types.

[0072] Existing Fourier infrared gas analyzers all introduce the gas to be analyzed into their own gas storage tank for infrared signal sampling and then perform quantitative analysis of the gas composition based on the spectrum. There are the following problems: due to the complex composition of the gas, it is possible that it contains corrosive gases, thereby damaging the gas storage tank. At the same time, the signal sampling frequency is fixed, resulting in a large deviation between the detection result and the analysis result, reducing the reference value of the data and the user experience. In order to solve the above problems, this embodiment discloses a modular Fourier infrared gas analysis device.

[0073] A modular Fourier infrared gas analysis device, such as Figure 1 As shown, the device comprises:

[0074] The analysis module 101 is used to perform a visual analysis on the target mixed gas, identify whether there is corrosive gas in the target mixed gas according to the analysis result, and obtain the identification result;

[0075] A selection module 102 is used to select an inlet gas chamber for the target mixed gas according to the identification result, wherein the inlet gas chamber includes: a one-way gas chamber for common materials and a one-way gas chamber for anti-corrosion materials;

[0076] A setting module 103 is used to detect the current humidity data of the target mixed gas and set the target signal sampling frequency of the infrared sensor according to the current humidity data;

[0077] The sampling and analysis module 104 is used to control the infrared sensor to perform gas sampling on the target mixed gas introduced into the one-way gas chamber according to the target signal sampling frequency, and to perform quantitative analysis on the gas composition and concentration of the target mixed gas according to the sampling signal.

[0078] In this embodiment, the view analysis is represented by performing spectral view analysis error and qualitative analysis on the target mixed gas;

[0079] In this embodiment, the target signal sampling frequency is represented by the sampling frequency of the infrared sensor for gas sampling of the target;

[0080] In this embodiment, the spectrum of each gas component in the target mixed gas can be obtained according to the sampling signal, and the quantitative concentration information of each gas component is obtained from the spectrum.

[0081] The working principle of the above technical solution is: first, the target mixed gas is analyzed by the analysis module, and whether there is corrosive gas in the target mixed gas is identified according to the analysis result, and the identification result is obtained; secondly, the selection module is used to select the inlet gas chamber for the target mixed gas according to the identification result, wherein the inlet gas chamber includes: a one-way gas chamber for ordinary materials and a one-way gas chamber for anti-corrosion materials; then, the current humidity data of the target mixed gas is detected by the setting module, and the target signal sampling frequency of the infrared sensor is set according to the current humidity data; finally, the sampling and analysis module is used to control the infrared sensor to sample the target mixed gas introduced into the one-way gas chamber according to the target signal sampling frequency, and the gas composition and concentration of the target mixed gas are quantitatively analyzed according to the sampling signal.

[0082] The beneficial effects of the above technical solution are: by identifying whether there is corrosive gas in the target mixed gas and then selectively introducing it into the one-way gas chamber of the anti-corrosion material loaded with corrosive gas, the storage gas chamber of the container can be effectively protected, the service life of the equipment is improved, and the cost is reduced. Furthermore, by intelligently setting the signal sampling frequency according to the humidity of the target mixed gas, a reasonable signal sampling frequency can be adaptively set according to the gas parameters to ensure the rationality and objectivity of the detection results and analysis results. It solves the problem in the prior art that due to the complex gas composition, it may contain corrosive gas and thus damage the gas storage tank. At the same time, the signal sampling frequency is unchanging, resulting in large deviations in the detection results and analysis results, reducing the reference value of the data and the user experience.

[0083] In one embodiment, the analysis module 101 includes:

[0084] The acquisition submodule 1011 is used to acquire a spatial three-dimensional image of the target mixed gas in the loaded object, and generate a multi-view image according to the spatial three-dimensional image;

[0085] An analysis submodule 1012 is used to perform texture analysis on the inner wall of the loaded object according to the multi-view images to obtain texture analysis results;

[0086] The identification submodule 1013 is used to determine the integrity of the inner wall of the loaded object according to the texture analysis result, identify whether there is corrosive gas in the target mixed gas according to the integrity, and obtain the identification result;

[0087] The output submodule 1014 is used to determine the storage medium of the target mixed gas according to the identification result and generate a storage instruction according to the storage medium.

[0088] In this embodiment, the loaded object is represented as an object loaded with a target mixed gas;

[0089] In this embodiment, the texture analysis is represented by performing integrity analysis on the processed texture of the inner wall of the loaded object.

[0090] The beneficial effects of the above technical solution are: by generating multi-view images, the texture analysis of the inner wall of the loaded object can be performed from various view directions, thereby ensuring the comprehensiveness of the analysis reference data. Furthermore, by judging whether there is corrosive gas based on the integrity of the inner wall of the loaded object, a quick judgment can be made based on the gas characteristics of the corrosive gas, thereby improving the judgment efficiency.

[0091] In one embodiment, the selection module includes:

[0092] A first determination submodule, used to determine a plurality of first introduction modes of the target mixed gas according to the identification result;

[0093] A first detection submodule is used to detect volatility characteristic parameters of the target mixed gas, and select a second introduction method from a plurality of first introduction methods according to the volatility characteristic parameters;

[0094] The second determining submodule is used to select an introduction gas chamber for the target mixed gas according to a second introduction method.

[0095] In this embodiment, the volatility characteristic parameter is represented by the volatility characteristic of the target mixed gas itself in the air.

[0096] The beneficial effect of the above technical solution is: by selecting the introduction method of the target mixed gas according to the volatility characteristic parameters, it can be ensured that the target mixed gas is not volatilized during the introduction process, which lays the foundation for subsequent gas composition detection and improves practicality.

[0097] In one embodiment, Figure 3 As shown, the setting module 103 includes:

[0098] The second detection submodule 1031 is used to detect the current humidity data of the target mixed gas using a humidity sensor;

[0099] The third determination submodule 1032 is used to determine the signal sampling frequency interval of the infrared sensor at the current humidity based on the preset humidity-sampling frequency comparison table according to the current humidity data of the target mixed gas;

[0100] The first acquisition submodule 1033 is used to acquire the working parameters and configuration information of the infrared sensor, and select the target signal sampling frequency adapted by the infrared sensor in the signal sampling frequency interval according to the working parameters and configuration information;

[0101] The setting submodule 1034 is used to set the sampling frequency of the infrared sensor based on the target signal sampling frequency.

[0102] The beneficial effect of the above technical solution is: by selecting the target signal sampling frequency adapted to the infrared sensor in the signal sampling frequency range according to the working parameters and configuration information of the infrared sensor, the signal sampling frequency that best matches the infrared sensor can be set, thereby ensuring the stability and anti-interference of subsequent infrared signal sampling, and further improving work efficiency and practicality.

[0103] In one embodiment, Figure 4 As shown, the sampling analysis module 104 includes:

[0104] The control submodule 1041 is used to control the infrared sensor to perform gas sampling on the target mixed gas introduced into the one-way gas chamber at the target signal sampling frequency to obtain an infrared sampling signal;

[0105] A generating submodule 1042, configured to perform Fourier transform on the infrared sampling signal to generate a first infrared spectrum;

[0106] The correction submodule 1043 is used to correct the spectral lines in the first infrared spectrum to obtain a second infrared spectrum;

[0107] The quantitative analysis submodule 1044 is used to perform quantitative analysis on the gas composition and concentration of the target mixed gas based on the second infrared spectrum.

[0108] The beneficial effect of the above technical solution is that by correcting the infrared spectrum, the infrared sensor's absorption characteristics for each gas component can be effectively avoided to ensure the qualification and practicality of the final spectrum, further ensure data accuracy, and improve the objectivity of subsequent gas composition analysis.

[0109] In one embodiment, Figure 5 As shown, the generating submodule 1042 includes:

[0110] The detection unit 10421 is used to detect multiple signal frequencies in the infrared sampling signal;

[0111] The comparison unit 10422 is used to compare the multiple signal frequencies with the target signal sampling frequency, and obtain the interference signal and the noise signal in the infrared sampling signal according to the comparison result and remove them;

[0112] The processing unit 10423 is used to perform Fourier transform processing on the processed infrared sampling signal to obtain a frequency domain signal;

[0113] The generating unit 10424 is used to generate a first infrared spectrum corresponding to the target mixed gas according to the frequency signal.

[0114] The beneficial effect of the above technical solution is that by eliminating the relevant interference signals and noise signals whose signal frequencies are different from the preset frequency, the noise signals and interference signals can be quickly determined and filtered out to ensure the purity of the infrared sampling signal, thereby further improving the practicality.

[0115] In one embodiment, the correction submodule includes:

[0116] The first determination unit is used to determine the infrared absorption characteristics of the infrared sensor for various preset gases, and at the same time, determine the content of chemical elements in the target mixed gas, and predict the components present in the target mixed gas according to the content of chemical elements;

[0117] A second determining unit, used for determining the local distortion spectral line in the first infrared spectrum according to the infrared absorption characteristics and the components present in the target mixed gas;

[0118] A calculation unit, used for calculating a standard spectrum value of the local distortion spectrum line according to a current spectrum value of the local distortion spectrum line and an infrared signal scattering error of a component present in a target mixed gas;

[0119] The first acquisition unit is used to replace the current spectrum value of the local distortion spectrum line with the standard spectrum value, and acquire the second infrared spectrum according to the replacement result.

[0120] The beneficial effect of the above technical solution is: by determining the content of chemical elements in the target mixed gas and then predicting the components present in the target mixed gas based on the content of chemical elements, the composition of the target mixed gas can be roughly evaluated and then the distorted spectral lines of the spectrum of the component under the infrared absorption characteristics can be determined and corrected, thereby ensuring the reality of the infrared spectrum.

[0121] In one embodiment, the quantitative analysis submodule includes:

[0122] A third determination unit, used to determine the gas composition of the target mixed gas according to the second infrared spectrum and a preset mapping spectrum comparison table of different gases;

[0123] an extraction unit, used for respectively extracting a target mapping spectrum of each gas component in the second infrared spectrum;

[0124] The second acquisition unit is used to obtain the amplitude change in the target mapping spectrum of each gas component, construct a gas content change curve of each gas component in the target mixed gas according to the amplitude change, and take the average value of the peak and valley values ​​in the change curve as the gas content of each gas component;

[0125] The fourth determination unit is used to determine the concentration of each gas component according to the spectral color depth of the target mapping spectrum of the gas component.

[0126] The beneficial effect of the above technical solution is that more intuitive and accurate data can be obtained by deeply analyzing the mapping spectra of each gas component to determine the concentration parameters and proportion parameters of various gas components in the target mixed gas, thereby ensuring the accuracy of the data.

[0127] In one embodiment, the second determining unit determines the local distortion spectral line in the first infrared spectrum according to the infrared absorption characteristics and the components present in the target mixed gas, including:

[0128] Obtain the diffusion range and light absorption of each preset gas in a fixed area;

[0129] Based on the infrared absorption characteristics of each preset gas, a matching function of each preset gas is determined by curve fitting and least squares analysis based on the diffusion range and light absorption of the preset gas in a fixed area;

[0130] Determine the target preset gas that is likely to exist in the target mixed gas according to the components existing in the target mixed gas;

[0131] Matching a line spectrum array of each target preset gas in a first infrared spectrum using a target matching function of the target preset gas;

[0132] Detecting the array signal of the line spectrum array of each target preset gas, and calculating the relative time delay vector in the array signal;

[0133] Constructing a spectrum array curve of each target preset gas according to the relative time delay vector of the array signal of the target preset gas;

[0134] Judging whether the spectrum array curve of each target preset gas is qualified according to the gas reaction characteristics of the target preset gas;

[0135] The first target preset gas with qualified spectral array curve is excluded, and the second target preset gas with unqualified spectral array curve is screened out;

[0136] Acquire a spectrum signal of a second target preset gas and perform Fourier transform on the signal to obtain a spectrum function;

[0137] Determine a peak spectrum line according to the spectrum function of the second target preset gas, and determine the ideal harmonic order of the second target preset gas according to the peak spectrum line;

[0138] The ideal harmonic order and the actual harmonic order of the second target preset gas are compared. If the two are consistent, the infrared spectrum of the second target preset gas is determined to be a normal spectrum. If the two are inconsistent, the infrared spectrum of the second target preset gas is determined to be a distorted spectrum.

[0139] In this embodiment, the light absorbance is expressed as the infrared light absorbance of each preset gas within a fixed area;

[0140] In this embodiment, the matching function is represented by the spectral line matching function of each preset gas in the infrared spectrum;

[0141] In this embodiment, the relative time delay vector represents the time delay variation vector of each target preset gas when it exists relative to other gases in the line spectrum array;

[0142] In this embodiment, the gas reaction characteristics are represented by the characteristic reactions of each target preset gas with other gases when they coexist;

[0143] The beneficial effect of the above technical solution is that it can accurately evaluate whether the harmonic spectrum line of each probable gas is a distorted spectrum line based on the gas reaction characteristics of each probable gas and its spectral array, thereby ensuring the precision and accuracy of the evaluation results.

[0144] In one embodiment, Figure 6 As shown, the device is implemented by the following method, comprising the following steps:

[0145] Step S601, performing a visual analysis on the target mixed gas, identifying whether there is corrosive gas in the target mixed gas according to the analysis result, and obtaining an identification result;

[0146] Step S602, selecting an inlet gas chamber for the target mixed gas according to the identification result, wherein the inlet gas chamber includes: a one-way gas chamber for common materials and a one-way gas chamber for anti-corrosion materials;

[0147] Step S603, detecting the current humidity data of the target mixed gas, and setting the target signal sampling frequency of the infrared sensor according to the current humidity data;

[0148] Step S604: Control the infrared sensor to perform gas sampling on the target mixed gas introduced into the one-way gas chamber according to the target signal sampling frequency, and perform quantitative analysis on the gas composition and concentration of the target mixed gas according to the sampling signal.

[0149] The working principle of the above technical solution is: first, perform a visual analysis on the target mixed gas, identify whether there is corrosive gas in the target mixed gas based on the analysis result, and obtain the identification result; secondly, select the inlet gas chamber for the target mixed gas based on the identification result, wherein the inlet gas chamber includes: a one-way gas chamber for ordinary materials and a one-way gas chamber for anti-corrosion materials; then detect the current humidity data of the target mixed gas, and set the target signal sampling frequency of the infrared sensor based on the current humidity data; finally, control the infrared sensor to sample the target mixed gas introduced into the one-way gas chamber based on the target signal sampling frequency, and perform quantitative analysis on the gas composition and concentration of the target mixed gas based on the sampling signal.

[0150] The beneficial effects of the above technical solution are: by identifying whether there is corrosive gas in the target mixed gas and then selectively introducing it into the one-way gas chamber of the anti-corrosion material loaded with corrosive gas, the storage gas chamber of the container can be effectively protected, the service life of the equipment is improved, and the cost is reduced. Furthermore, by intelligently setting the signal sampling frequency according to the humidity of the target mixed gas, a reasonable signal sampling frequency can be adaptively set according to the gas parameters to ensure the rationality and objectivity of the detection results and analysis results.

[0151] Those skilled in the art should understand that the first and second in the present invention merely refer to different application stages.

[0152] Other embodiments of the present disclosure will be readily apparent to those skilled in the art after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0153] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A modular Fourier infrared gas analysis device, characterized in that: The device includes: An analysis module is used to perform a visual analysis on the target mixed gas, identify whether there is corrosive gas in the target mixed gas according to the analysis result, and obtain the identification result; A selection module is used to select an inlet gas chamber for the target mixed gas according to the identification result, wherein the inlet gas chamber includes: a one-way gas chamber for common materials and a one-way gas chamber for anti-corrosion materials; A setting module, used to detect the current humidity data of the target mixed gas, and set the target signal sampling frequency of the infrared sensor according to the current humidity data; A sampling and analysis module, which is used to control the infrared sensor to sample the target mixed gas introduced into the one-way gas chamber according to the sampling frequency of the target signal, and to quantitatively analyze the gas composition and concentration of the target mixed gas according to the sampling signal; The sampling and analysis module comprises: A control submodule, used for controlling the infrared sensor to perform gas sampling on the target mixed gas introduced into the one-way gas chamber at the target signal sampling frequency to obtain an infrared sampling signal; A generating submodule, used for performing Fourier transform on the infrared sampling signal to generate a first infrared spectrum; A correction submodule, used to correct the spectral lines in the first infrared spectrum to obtain a second infrared spectrum; A quantitative analysis submodule, used for quantitatively analyzing the gas composition and concentration of the target mixed gas based on the second infrared spectrum; The correction submodule comprises: The first determination unit is used to determine the infrared absorption characteristics of the infrared sensor for various preset gases, and at the same time, determine the content of chemical elements in the target mixed gas, and predict the components present in the target mixed gas according to the content of chemical elements; A second determining unit, used for determining the local distortion spectral line in the first infrared spectrum according to the infrared absorption characteristics and the components present in the target mixed gas; A calculation unit, used for calculating a standard spectrum value of the local distortion spectrum line according to a current spectrum value of the local distortion spectrum line and an infrared signal scattering error of a component present in a target mixed gas; A first acquisition unit, used to replace the current spectrum value of the local distorted spectrum line with the standard spectrum value, and acquire a second infrared spectrum according to the replacement result; The second determination unit determines the local distortion spectral line in the first infrared spectrum according to the infrared absorption characteristics and the components present in the target mixed gas, including: Obtain the diffusion range and light absorption of each preset gas in a fixed area; Based on the infrared absorption characteristics of each preset gas, a matching function of each preset gas is determined by curve fitting and least squares analysis based on the diffusion range and light absorption of the preset gas in a fixed area; Determine the target preset gas that is likely to exist in the target mixed gas according to the components existing in the target mixed gas; Matching the line spectrum array of each target preset gas in the first infrared spectrum through the target matching function of the target preset gas; Detecting the array signal of the line spectrum array of each target preset gas, and calculating the relative time delay vector in the array signal; Constructing a spectrum array curve of each target preset gas according to the relative time delay vector of the array signal of the target preset gas; Judging whether the spectrum array curve of each target preset gas is qualified according to the gas reaction characteristics of the target preset gas; The first target preset gas with qualified spectral array curve is excluded, and the second target preset gas with unqualified spectral array curve is screened out; Acquire a spectrum signal of a second target preset gas and perform Fourier transform on the signal to obtain a spectrum function; Determine a peak spectrum line according to the spectrum function of the second target preset gas, and determine the ideal harmonic order of the second target preset gas according to the peak spectrum line; The ideal harmonic order and the actual harmonic order of the second target preset gas are compared. If the two are consistent, the infrared spectrum of the second target preset gas is determined to be a normal spectrum. If the two are inconsistent, the infrared spectrum of the second target preset gas is determined to be a distorted spectrum.

2. The modular Fourier infrared gas analysis device according to claim 1, characterized in that: The analysis module comprises: A collection submodule, used for collecting a spatial three-dimensional image of the target mixed gas in the loaded object, and generating a multi-view image according to the spatial three-dimensional image; An analysis submodule, used to perform texture analysis on the inner wall of the loaded object according to the multi-view images and obtain texture analysis results; An identification submodule is used to determine the integrity of the inner wall of the loaded object according to the texture analysis result, identify whether there is corrosive gas in the target mixed gas according to the integrity, and obtain the identification result; The output submodule is used to determine the storage medium of the target mixed gas according to the identification result and generate a storage instruction according to the storage medium.

3. The modular Fourier infrared gas analysis device according to claim 1, characterized in that: The selection module comprises: A first determination submodule, used to determine a plurality of first introduction modes of the target mixed gas according to the identification result; A first detection submodule is used to detect volatility characteristic parameters of the target mixed gas, and select a second introduction method from a plurality of first introduction methods according to the volatility characteristic parameters; The second determining submodule is used to select an introduction gas chamber for the target mixed gas according to a second introduction method.

4. The modular Fourier infrared gas analysis device according to claim 1, characterized in that: Setup module, including: The second detection submodule is used to detect the current humidity data of the target mixed gas using a humidity sensor; A third determination submodule is used to determine the signal sampling frequency interval of the infrared sensor at the current humidity based on the preset humidity-sampling frequency comparison table according to the current humidity data of the target mixed gas; The first acquisition submodule is used to acquire the working parameters and configuration information of the infrared sensor, and select the target signal sampling frequency adapted by the infrared sensor in the signal sampling frequency range according to the working parameters and configuration information; The setting submodule is used to set the sampling frequency of the infrared sensor based on the target signal sampling frequency.

5. The modular Fourier infrared gas analysis device according to claim 1, characterized in that: The generating submodule comprises: A detection unit, used for detecting a plurality of signal frequencies in the infrared sampling signal; A comparison unit is used to compare the multiple signal frequencies with the target signal sampling frequency, and obtain interference signals and noise signals in the infrared sampling signal according to the comparison result and remove them; A processing unit, used for performing Fourier transform processing on the processed infrared sampling signal to obtain a frequency domain signal; The generating unit is used to generate a first infrared spectrum corresponding to the target mixed gas according to the frequency signal.

6. The modular Fourier infrared gas analysis device according to claim 1, characterized in that: The quantitative analysis submodule comprises: A third determination unit, used to determine the gas composition of the target mixed gas according to the second infrared spectrum and a preset mapping spectrum comparison table of different gases; an extraction unit, used for respectively extracting a target mapping spectrum of each gas component in the second infrared spectrum; The second acquisition unit is used to obtain the amplitude change in the target mapping spectrum of each gas component, construct a gas content change curve of each gas component in the target mixed gas according to the amplitude change, and take the average value of the peak and valley values ​​in the change curve as the gas content of each gas component; The fourth determination unit is used to determine the concentration of each gas component according to the spectral color depth of the target mapping spectrum of the gas component.

7. The modular Fourier infrared gas analysis device according to claim 1, characterized in that: The device is implemented by the following method, comprising the following steps: Performing visual analysis on the target mixed gas, identifying whether there is corrosive gas in the target mixed gas according to the analysis result, and obtaining the identification result; Selecting an inlet gas chamber for the target mixed gas according to the identification result, wherein the inlet gas chamber includes: a one-way gas chamber for common materials and a one-way gas chamber for anti-corrosion materials; Detect the current humidity data of the target mixed gas, and set the target signal sampling frequency of the infrared sensor according to the current humidity data; The infrared sensor is controlled according to the sampling frequency of the target signal to perform gas sampling on the target mixed gas introduced into the one-way gas chamber, and the gas composition and concentration of the target mixed gas are quantitatively analyzed according to the sampling signal.

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