Gas leakage detection system

Abstract

The utility model discloses a gas leakage detection system, comprising a background from which a leaked gas cloud group leaks; the Fourier transform infrared gas telemetering module is used for detecting component information and spatial concentration information of the leaked gas cloud cluster; and the infrared focal plane gas imaging module is used for acquiring the real-time geometrical morphology of the leaked gas cloud cluster. According to the utility model, the fourier transform infrared gas telemetering module can accurately analyze the concentrations and components of different gases, and the infrared focal plane imaging module can quickly find the gas leakage source and the gas space distribution. The system not only can accurately analyze the concentrations and components of different gases, but also can find the gas leakage source and gas spatial distribution, and has the technical effects of high resolution, quick response, high accuracy and real-time monitoring.

Description

Technical Field

[0001] The utility model embodiment relates to the technical field of gas leakage detection, and in particular includes a gas leakage detection system. Background Art

[0002] The personal harm and social impact caused by industrial gas leakage in chemical parks have always been an important issue of concern to mankind. Therefore, the development of gas leakage detection technology has a long history.

[0003] Traditional gas detection sensors are contact point measurements with high sensitivity and measurement accuracy, generally reaching concentrations of one part per million. However, it is often necessary to deploy thousands of sensors in an area and scan each potential leak point, which is time-consuming and labor-intensive, and it is difficult to quickly locate the leak source or predict the situation at the leak site, resulting in low detection efficiency. Although Fourier transform infrared gas telemetry technology can detect the presence of different gases in the atmosphere, the corresponding column concentrations, and multiple gas components, it is impossible to obtain the real-time geometric shape of the leaking gas cloud and the leak source, resulting in non-intuitive detection results. Summary of the invention

[0004] The utility model provides a gas leakage detection system, which can not only accurately analyze the concentration and composition of different gases through a Fourier transform infrared gas telemetry module and an infrared focal plane imaging module, but also can discover the leakage source of the gas and the spatial distribution of the gas, and has the technical effects of high resolution, rapid response, high accuracy and real-time monitoring.

[0005] In a first aspect, an embodiment of the utility model provides a gas leakage detection system, comprising: a background, from which a leaking gas cloud leaks; a Fourier transform infrared gas telemetry module, the Fourier transform infrared gas telemetry module being used to detect composition information and spatial concentration information of the leaking gas cloud;

[0006] Infrared focal plane gas imaging module, the infrared focal plane gas imaging module is used to obtain the real-time geometric morphology of the leaking gas cloud.

[0007] Optionally, the gas leakage detection system further includes a visible light camera, which is used to obtain a visible light image of the location of the leaking gas cloud.

[0008] Optionally, the gas leakage detection system further comprises a processing module, a first end of the processing module being electrically connected to a signal output end of the Fourier transform infrared gas telemetry module;

[0009] The second end of the processing module is electrically connected to the signal output end of the infrared focal plane gas imaging module;

[0010] The third terminal of the processing module is electrically connected to the signal output terminal of the visible light camera;

[0011] The processing module is used to determine the leakage location, composition information and spatial concentration information of the leaking gas cloud based on the composition information, spatial concentration information, real-time geometric shape of the leaking gas cloud and the visible light image of the location of the leaking gas cloud.

[0012] Optionally, the Fourier transform infrared gas telemetry module includes a Fourier transform infrared telemetry front telescope, a Michelson interferometer, an infrared detector and a signal acquisition control module;

[0013] The Fourier infrared telemetry front telescope is used to collect infrared radiation light signals from the leaking gas cloud;

[0014] The first end of the Michelson interferometer is connected to the Fourier infrared telemetry front telescope, and the Michelson interferometer is used to obtain an interference signal of the infrared radiation light signal of the leaking gas cloud according to the infrared radiation light signal of the leaking gas cloud;

[0015] The input end of the infrared detector is connected to the output end of the Michelson interferometer, and the infrared detector is used to convert the interference signal of the infrared light signal of the leaking gas cloud into a digital signal;

[0016] The input end of the signal acquisition control module is connected to the output end of the infrared detector. The signal acquisition control module is used to convert the digital signal into a spectral signal through Fourier transform, and determine the composition information and spatial concentration information of the leaking gas cloud.

[0017] Optionally, the Fourier transform infrared gas telemetry module also includes a Fourier transform infrared telemetry window.

[0018] Optionally, the infrared focal plane gas imaging module includes an infrared focal plane detector and an infrared imaging circuit;

[0019] The infrared focal plane detector is used to collect infrared images of the real-time geometric shape of the leaking gas cloud;

[0020] The input end of the infrared imaging circuit is connected to the output end of the infrared focal plane detector. The infrared imaging circuit is used to perform homogenization processing on the infrared image of the real-time geometric shape of the leaking gas cloud and determine the real-time geometric shape of the leaking gas cloud.

[0021] Optionally, the infrared focal plane gas imaging module further includes: an infrared gas focal plane imaging window.

[0022] Optionally, the gas leakage detection system also includes a temperature control module, which is used to provide a preset calibration temperature for the gas leakage detection system, the temperature of the leaking gas cloud is within the preset calibration temperature range, and the temperature of the background is within the preset calibration temperature range.

[0023] Optionally, the temperature control module includes a swing mirror for blackbody correction and a correction blackbody;

[0024] The calibration black body is used to emit infrared light of a preset calibration temperature;

[0025] The blackbody-corrected swing mirror is used to reflect infrared light of a preset calibration temperature to the Fourier transform infrared gas telemetry module and the infrared focal plane gas imaging module, the temperature of the leaking gas cloud is within the preset calibration temperature range, and the temperature of the background is within the preset calibration temperature range. Optionally, the visible light camera includes a CCD camera.

[0026] In the technical solution provided by the embodiment of the utility model, the Fourier transform infrared gas telemetry module uses the Fourier transform infrared gas telemetry technology to provide accurate leakage gas cloud composition and concentration, while the infrared focal plane gas imaging module uses the infrared focal plane gas imaging technology to quickly find the leakage source of the leakage gas cloud and the real-time geometric shape of the gas cloud. The embodiment of the utility model combines the Fourier transform infrared gas telemetry module and the infrared focal plane gas imaging module, which can not only realize the accurate analysis of the concentration and composition of the leakage gas cloud, but also can obtain the real-time geometric shape and leakage source of the leakage gas cloud, thereby improving the accuracy of gas detection in a large range of space, and has the technical effects of high resolution, rapid response, high accuracy and real-time monitoring.

[0027] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a structural schematic diagram of a gas leakage detection system provided by the utility model;

[0030] Figure 2 This is a structural schematic diagram of another gas leakage detection system provided by the utility model. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] Figure 1 This is a structural diagram of a gas leakage detection system provided by the utility model. Figure 1 The system includes: a background 1, from which a leaking gas cloud leaks; a Fourier transform infrared gas telemetry module 6, which is used to detect the composition information and spatial concentration information of the leaking gas cloud; and an infrared focal plane gas imaging module 7, which is used to obtain the real-time geometric morphology of the leaking gas cloud.

[0034] Specifically, when the background 1 emits infrared radiation light carrying information of the leaking gas cloud 2, the Fourier transform infrared gas telemetry module 6 will detect the composition information and spatial concentration information of the gas cloud 2 according to the infrared spectrum information. At the same time, the infrared focal plane gas imaging module 7 acquires an infrared light image, and the real-time geometric shape of the leaking gas cloud 2 can be obtained through the acquired infrared light image.

[0035] Among them, the Fourier transform infrared gas telemetry module 6 uses Fourier transform infrared gas telemetry technology to detect the composition information of the leaking gas cloud. Fourier transform infrared gas telemetry technology is a Fourier transform-based infrared spectrum gas detection technology. This technology adopts the infrared spectrum feature recognition principle to convert the acquired infrared spectrum time domain signal into the frequency domain. By analyzing the absorption peaks and absorption lines in the spectrum, the composition and concentration of the leaking gas cloud 2 can be accurately analyzed.

[0036] The infrared focal plane gas imaging module 7 uses infrared focal plane gas imaging technology to obtain the real-time geometric shape of the leaking gas cloud 2. Infrared focal plane gas imaging technology is a technology that uses infrared cameras and specific gas absorption spectra to perform gas detection and imaging. This technology is based on the working principle of infrared radiation and obtains the real-time geometric shape of the leaking gas cloud 2 by detecting and analyzing the infrared radiation characteristics of the target area.

[0037] In the technical solution provided by the embodiment of the utility model, the Fourier transform infrared gas telemetry module 6 uses the Fourier transform infrared gas telemetry technology to provide accurate information on the composition and spatial concentration of the leaking gas cloud 2, while the infrared focal plane gas imaging module 7 uses the infrared focal plane gas imaging technology to quickly find the leakage source of the leaking gas cloud 2 and the real-time geometric shape of the leaking gas cloud 2. The embodiment of the utility model combines the Fourier transform infrared gas telemetry module 6 and the infrared focal plane gas imaging module 7, which can not only realize the accurate analysis of the concentration and composition of the leaking gas cloud 2, but also obtain the real-time geometric shape and leakage source of the leaking gas cloud 2, thereby improving the accuracy of gas detection in a large spatial range, and has the technical effects of high resolution, rapid response, high accuracy and real-time monitoring.

[0038] Figure 2 This is a structural diagram of another gas leakage detection system provided by the utility model. Figure 2 Optionally, based on the above embodiment, the system further includes: a visible light camera 8, which is used to obtain a visible light image of the location of the leaking gas cloud 2.

[0039] The visible light camera obtains a visible light image of the location of the leaking gas cloud 2 through the visible light camera window 5 .

[0040] Specifically, by comparing the visible light image of the location of the leaking gas cloud 2 and the real-time geometric shape of the leaking gas cloud 2, the leakage location of the leaking gas cloud 2 can be determined.

[0041] See also Figure 1 Optionally, based on the above embodiment, the system further includes: a processing module 11, a first end of the processing module 11 is electrically connected to a signal output end of the Fourier transform infrared gas telemetry module 6; a second end of the processing module 11 is electrically connected to a signal output end of the infrared focal plane gas imaging module 7; a third end of the processing module 11 is electrically connected to a signal output end of a visible light camera 8; the processing module 11 is used to determine the leakage position, composition information and spatial concentration information of the leaking gas cloud 2 according to the composition information, spatial concentration information, real-time geometric shape of the leaking gas cloud 2 and the visible light image of the location of the leaking gas cloud 2.

[0042] Among them, see Figure 2 The processing module 11 includes a host computer, an infrared detector, an RS485 port, a UDP port, and an RTSP port. The RS485 port is used to transmit the gas composition and spectral data of the leaking gas cloud 2 to the host computer. The UDP port is used to transmit the infrared light image of the leaking gas cloud 2 to the host computer. The RTSP port is used to transmit the visible light image of the leaking gas cloud 2 to the host computer. The host computer is used to display the status, spectral data, infrared imaging and visible light image of the gas leak detection system in real time, and control the infrared detector to realize the dual light fusion of infrared imaging and visible light image to find out the leakage source of the leaking gas.

[0043] Specifically, the Fourier transform infrared gas telemetry module 6 transmits the analyzed composition, spatial concentration and original spectrum of the leaking gas cloud 2 to the processing module 11 through the RS485 port, and the processing module 11 displays the composition, spatial concentration and original spectrum of the leaking gas cloud. At the same time, the infrared focal plane gas imaging module 7 transmits the captured infrared image of the leaking gas cloud 2 to the processing module 11 through the UDP port, and the processing module 11 displays the infrared image of the leaking gas cloud. The visible light camera 8 transmits the captured visible light image of the leaking gas cloud to the processing module 11 through the RTSP port, and the processing module 11 displays the visible light image of the leaking gas cloud 2, and determines the leakage position, composition information and spatial concentration information of the leaking gas cloud based on the dual light fusion of the infrared image and the visible light image of the leaking gas cloud 2.

[0044] In the embodiment of the utility model, the processing module 11 displays the composition information, spatial concentration information, original spectrum, infrared image and visible light image of the leaking gas cloud 2, so that not only the composition information and spatial concentration information of the leaking gas cloud 2 can be intuitively viewed, but also the leakage location of the leaking gas cloud 2 can be determined.

[0045] Continue to see Figure 2Optionally, on the basis of the above embodiment, the Fourier transform infrared gas telemetry module 6 includes a Fourier transform infrared telemetry pre-telescope 60, a Michelson interferometer 61, an infrared detector 62 and a signal acquisition control module 63; the Fourier transform infrared telemetry pre-telescope 60 is used to collect the infrared radiation light signal of the leaking gas cloud 2; the first end of the Fourier transform infrared telemetry pre-telescope 60 is connected to the Michelson interferometer 61, and the Michelson interferometer 61 is used to obtain the interference signal of the infrared radiation light signal of the leaking gas cloud 2 according to the infrared radiation light signal of the leaking gas cloud 2; the input end of the infrared detector 62 is connected to the output end of the Michelson interferometer 61, and the infrared detector 62 is used to convert the interference signal of the infrared light signal of the leaking gas cloud 2 into a digital signal; the input end of the signal acquisition control module 63 is connected to the output end of the infrared detector 62, and the signal acquisition control module 63 is used to convert the digital signal into a spectral signal through Fourier transform, and determine the composition information and spatial concentration information of the leaking gas cloud 2.

[0046] Specifically, when the background 1 emits infrared radiation light, the Fourier infrared telemetry front telescope 60 will receive the infrared radiation light signal of the leaking gas cloud 2, and transmit the received infrared radiation light signal of the leaking gas cloud 2 to the Michelson interferometer 61. After the moving mirror of the Michelson interferometer 61 scans, an optical path difference is formed, thereby generating interference, and the interference signal of the infrared light signal of the leaking gas cloud 2 generating interference is transmitted to the infrared detector 62. The infrared detector 62 converts the interference signal of the infrared light signal of the leaking gas cloud 2 into a digital signal, and transmits the digital signal to the signal acquisition control module 63. The signal acquisition control module 63 obtains the spectral signal of the leaking gas cloud 2 by Fourier transform, and analyzes the composition and spatial concentration of the leaking gas cloud 2.

[0047] In the embodiment of the utility model, the Fourier transform infrared telemetry module 6 can provide high-resolution spectral data, can accurately analyze the spectral characteristics of the leaking gas cloud 2, and can complete the acquisition and analysis of spectral data in a relatively short time, with the technical effects of high resolution, rapid response, high accuracy and real-time monitoring.

[0048] Continue to see Figure 1 Optionally, based on the above embodiment, the Fourier transform infrared gas telemetry module 6 also includes a Fourier transform infrared telemetry window 3.

[0049] The Fourier transform infrared telemetry window plays the role of transmitting infrared radiation light signals, and is used to allow the infrared radiation light emitted by the background 1 to enter the Fourier transform infrared gas telemetry module 6 .

[0050] Continue to see Figure 2Optionally, based on the above embodiments, the infrared focal plane gas imaging module 7 includes an infrared focal plane detector 70 and an infrared imaging circuit 71; the infrared focal plane detector 70 is used to collect an infrared image of the real-time geometric shape of the leaking gas cloud 2; the input end of the infrared imaging circuit 71 is connected to the output end of the infrared focal plane detector 70, and the infrared imaging circuit 71 is used to homogenize the infrared image of the real-time geometric shape of the leaking gas cloud 2, and determine the real-time geometric shape of the leaking gas cloud 2.

[0051] Specifically, the infrared focal plane detector 70 will take the infrared light image of the leaking gas cloud 2 and transmit it to the infrared imaging circuit 71. The infrared imaging circuit 71 will uniformize the resolution and grayscale of the received infrared light image, and transmit the processed infrared light image to the processing module 11 through UDP. The processing module 11 will display the infrared image of the leaking gas cloud 2.

[0052] In the embodiment of the utility model, the infrared focal plane detector 70 can provide infrared images with high spatial resolution, can clearly show the existence location and distribution of the gas, and has a fast shooting speed, can obtain real-time infrared images, and facilitate the detection of the existence and changes of the leaking gas cloud 2.

[0053] Continue to see Figure 1 Optionally, based on the above embodiment, the infrared focal plane gas imaging module 7 further includes: an infrared gas focal plane imaging window 4.

[0054] The infrared focal plane gas imaging window 4 is used to transmit the infrared imaging of the leaking gas cloud 2 to the infrared focal plane gas imaging module 7 .

[0055] Continue to see Figure 1 Optionally, based on the above embodiment, the system also includes: a temperature control module, the temperature control module is used to provide a preset calibration temperature for the gas leakage detection system, the temperature of the leaking gas cloud 2 is within the preset calibration temperature range, and the temperature of the background 1 is within the preset calibration temperature range.

[0056] Among them, the preset calibration temperature range is 15℃-30℃. If the temperature of the gas leakage detection system is higher or lower than the preset calibration temperature, at this time, the temperature of the gas leakage detection system will affect the analysis of the composition and spatial concentration of the leaking gas cloud 2 by the Fourier transform infrared gas telemetry module 6, the acquisition of the infrared image of the leaking gas cloud 2 by the infrared focal plane gas imaging module 7, and the acquisition of the visible light image of the leaking gas cloud by the visible light camera 8.

[0057] Specifically, when the temperature of the gas leakage detection system is higher or lower than a preset temperature, the temperature control module provides a preset calibration temperature for the gas leakage detection system, so that the temperature of the gas leakage detection system is controlled within a preset temperature range.

[0058] In an embodiment of the utility model, the temperature control module is used to provide a preset calibration temperature for the gas leakage detection system. The temperature of the leaking gas cloud 2 is within the preset calibration temperature range, and the temperature of the background 1 is within the preset calibration temperature range, thereby avoiding the influence of the temperature of the gas leakage detection system on the analysis of the composition and spatial concentration of the leaking gas cloud 2, and the acquisition of infrared images and visible light images.

[0059] Continue to see Figure 2 Optionally, based on the above embodiment, the temperature control module includes a blackbody-corrected oscillating mirror 10 and a correction blackbody 9; the correction blackbody 9 is used to emit infrared rays of a preset calibration temperature; the blackbody-corrected oscillating mirror 10 is used to reflect infrared rays of a preset calibration temperature to the Fourier transform infrared gas telemetry module and the infrared focal plane gas imaging module, so that the temperature of the leaking gas cloud 2 is within a preset calibration temperature range, and the temperature of the background 1 is within a preset calibration temperature range.

[0060] Specifically, when the gas leakage detection system detects leaking gas, the swing mirror 10 of blackbody correction will block the infrared light of preset calibration temperature emitted by the correction blackbody 9. When the blackbody is corrected, the correction blackbody 9 emits infrared light of preset calibration temperature to change the optical path through the swing mirror 10 of blackbody correction, so that the infrared light of preset calibration temperature enters various components in the gas leakage detection system (such as Fourier infrared telemetry pre-telescope 60, infrared detector 62, Michelson interferometer 61, signal acquisition control module 63, infrared focal plane detector 70 and visible light camera 80), so that the temperature of each component in the gas leakage detection system is controlled within the preset calibration temperature range, so that the temperature of the leaking gas cloud 2 and the temperature of the background 1 are both within the temperature of the gas leakage detection system, that is, the calibration of the infrared light signal is achieved.

[0061] In the embodiment of the utility model, by setting the correction black body 9 and the black body correction swing mirror 10, the temperature of the gas leakage detection system can be controlled to be within a preset temperature range, thereby avoiding the influence of the temperature of the gas leakage detection system on the analysis of the composition and spatial concentration of the leaking gas cloud 2, the acquisition of infrared images and visible light images.

[0062] Continue to see Figure 2 Optionally, based on the above embodiment, the visible light camera 8 includes a CCD camera 80.

[0063] The CCD camera 80 captures a visible light image of the leaking gas cloud 2 through the visible light camera window 5. The visible light camera window 5, the Fourier infrared telemetry window 3 and the infrared gas focal plane imaging window 5 can be placed in an overlapping manner. And the optical axes of the three optical paths must be parallel to achieve simultaneous matching of the spectrum, infrared image and visible light image.

[0064] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0065] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A gas leak detection system, characterized in that: include: background, from which a leaking gas cloud leaks; A Fourier transform infrared gas remote sensing module, wherein the Fourier transform infrared gas remote sensing module is used to detect the composition information and spatial concentration information of the leaking gas cloud; An infrared focal plane gas imaging module, wherein the infrared focal plane gas imaging module is used to obtain the real-time geometric shape of the leaking gas cloud; Wherein, the gas leakage detection system further comprises a visible light camera, which is used to obtain a visible light image of the location of the leaking gas cloud; A processing module, wherein a first end of the processing module is electrically connected to a signal output end of the Fourier transform infrared gas telemetry module; The second end of the processing module is electrically connected to the signal output end of the infrared focal plane gas imaging module; The third end of the processing module is electrically connected to the signal output end of the visible light camera; The processing module is used to determine the leakage location, composition information and spatial concentration information of the leaking gas cloud based on the composition information, spatial concentration information of the leaking gas cloud, the real-time geometric shape of the leaking gas cloud and the visible light image of the location of the leaking gas cloud.

2. The gas leakage detection system according to claim 1, characterized in that: The Fourier transform infrared gas telemetry module includes a Fourier transform infrared telemetry front telescope, a Michelson interferometer, an infrared detector and a signal acquisition control module; The Fourier infrared telemetry front telescope is used to collect infrared radiation light signals of the leaking gas cloud; The first end of the Michelson interferometer is connected to the Fourier infrared telemetry front telescope, and the Michelson interferometer is used to obtain an interference signal of the infrared radiation light signal of the leaking gas cloud according to the infrared radiation light signal of the leaking gas cloud; The input end of the infrared detector is connected to the output end of the Michelson interferometer, and the infrared detector is used to convert the interference signal of the infrared light signal of the leaking gas cloud into a digital signal; The input end of the signal acquisition control module is connected to the output end of the infrared detector. The signal acquisition control module is used to convert the digital signal into a spectral signal through Fourier transform and determine the composition information and spatial concentration information of the leaking gas cloud.

3. The gas leakage detection system according to claim 2, characterized in that: The Fourier transform infrared gas telemetry module also includes a Fourier transform infrared telemetry window.

4. The gas leakage detection system according to claim 1, characterized in that: The infrared focal plane gas imaging module includes an infrared focal plane detector and an infrared imaging circuit; The infrared focal plane detector is used to collect infrared images of the real-time geometric shape of the leaking gas cloud; The input end of the infrared imaging circuit is connected to the output end of the infrared focal plane detector, and the infrared imaging circuit is used to perform homogenization processing on the infrared image of the real-time geometric shape of the leaking gas cloud and determine the real-time geometric shape of the leaking gas cloud.

5. The gas leakage detection system according to claim 4, characterized in that: The infrared focal plane gas imaging module further includes: an infrared gas focal plane imaging window.

6. The gas leakage detection system according to claim 1, characterized in that: It also includes a temperature control module, which is used to provide a preset calibration temperature for the gas leakage detection system, the temperature of the leaking gas cloud is within the preset calibration temperature range, and the temperature of the background is within the preset calibration temperature range.

7. The gas leakage detection system according to claim 6, characterized in that: The temperature control module includes a swing mirror for blackbody correction and a correction blackbody; The calibration black body is used to emit infrared rays of a preset calibration temperature; The blackbody-corrected oscillating mirror is used to reflect infrared rays of a preset calibration temperature to the Fourier transform infrared gas telemetry module and the infrared focal plane gas imaging module, so that the temperature of the leaking gas cloud is within the preset calibration temperature range and the temperature of the background is within the preset calibration temperature range.

8. The gas leakage detection system according to claim 1, characterized in that: The visible light camera includes a CCD camera.

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