Gas leakage gas cloud spectrum video monitoring and early warning method and system

Abstract

This invention discloses a gas cloud spectral video monitoring and early warning method and system for gas leaks, belonging to the field of detection technology. Its main purpose is to solve the problem of poor efficiency in existing gas leak monitoring and early warning systems. The method includes: acquiring visible light video information and gas infrared radiation information of a gas pipeline, wherein the visible light video information and gas infrared radiation information are obtained through a light-capturing device located at a pipeline transmission node; analyzing the light information in the visible light video information and fusing the obtained spectral information with the gas infrared radiation information to obtain gas cloud spectral information; when the spectral convexity or spectral convexity surface in the gas cloud spectral information is greater than a preset convexity threshold or a preset convexity surface threshold, searching for the gas leak location based on the optical distance mapping relationship corresponding to the spectral convexity or spectral convexity surface; if the gas leak location exists, outputting a monitoring anomaly early warning information.

Description

Technical Field

[0001] This invention relates to the field of detection technology, and in particular to a method and system for monitoring and early warning of gas leaks using gas cloud spectral video. Background Technology

[0002] Natural gas is an important household and industrial resource in people's lives. Therefore, safety monitoring is required during the transmission and use of natural gas to prevent gas leaks.

[0003] Currently, existing industrial production typically relies on monitoring the concentration of fuel gas to issue warnings when the concentration exceeds a preset leakage concentration. However, due to the divergent nature of gases, when concentration detection equipment detects an abnormal fuel gas concentration, a gas leak may occur after a considerable period, leading to inaccurate leakage monitoring and significantly increasing the risk of gas safety hazards. Furthermore, it is difficult to accurately pinpoint the leak location. Therefore, there is an urgent need for a gas leak monitoring and early warning system using gas cloud spectral video to address these issues. Summary of the Invention

[0004] In view of this, the present invention provides a gas cloud spectral video monitoring and early warning method and system for gas leaks, the main purpose of which is to solve the problem of poor efficiency in existing gas leak monitoring and early warning systems.

[0005] According to one aspect of the present invention, a method for monitoring and early warning of gas leaks using gas cloud spectral video is provided, comprising:

[0006] The visible light video information and gas infrared radiation information of the gas pipeline are obtained by a light imaging device located at the pipeline transmission node of the gas pipeline.

[0007] The light information in the visible light video information is analyzed, and the obtained spectral information is fused with the gas infrared radiation information to obtain gas cloud spectral information;

[0008] If the spectral bumps or spectral convexities in the gas cloud spectral information are greater than a preset bump threshold or a preset convexity threshold, the gas leak location is searched based on the optical distance mapping relationship corresponding to the spectral bumps or the spectral convexities.

[0009] If the gas leak location is found, an abnormal monitoring warning will be output.

[0010] Furthermore, the parsing of the ray information in the visible light video information includes:

[0011] The light information in the visible light video information is divided according to a preset visible light frequency, and the different light rays after division are subjected to spectral conversion to obtain spectral information;

[0012] The preset visible light frequency is determined by different light rays at different gas concentrations.

[0013] Furthermore, the process of fusing the analyzed spectral information with the gas infrared radiation information to obtain gas cloud spectral information includes:

[0014] The gas non-uniformity range of the gas infrared radiation information is determined based on the gas contrast concentration mapping relationship. The gas non-uniformity range corresponding to different gas infrared radiation information is pre-configured in the gas contrast concentration mapping relationship. The gas non-uniformity range is used to characterize the distance of non-uniform diffusion of gas at different concentrations in the air.

[0015] Under the condition that the first coordinate system corresponding to the gas non-uniformity range is aligned with the second coordinate system corresponding to the spectral information, the first rendering color corresponding to the spectral information and the second rendering color corresponding to the gas infrared radiation information are superimposed and rendered to obtain the gas cloud spectral information.

[0016] Furthermore, the method of searching for the gas leak location based on the optical distance mapping relationship corresponding to the spectral convex point or the spectral convex surface includes:

[0017] The device identifier corresponding to the spectral bump or the spectral convex surface is determined, and the device identifier is used to characterize the positional order of the light imaging device on the pipeline transmission node;

[0018] The expected leakage location spacing between the spectral bumps or the spectral convex surfaces is determined based on the device identifier;

[0019] The search is performed on the optical distance mapping relationship to determine whether there is a target leak location according to the expected leak location spacing. The optical distance mapping relationship is used to characterize the correspondence between different distance locations and different gas concentrations that block light.

[0020] The location of the target leak was determined as the gas leak location.

[0021] Furthermore, the light imaging device includes a video imaging device and an infrared imaging device, and the acquisition of visible light video information and gas infrared radiation information of the gas pipeline includes:

[0022] The video image data transmitted by the video shooting device is acquired, and the video image data is filtered according to a preset light filtering frequency;

[0023] If the filtered video image data has a continuous relationship of light rays, then the visible light video information is generated;

[0024] Acquire the infrared wavelength data transmitted by the infrared imaging device, and filter the infrared wavelength data according to preset abnormal infrared wave data;

[0025] If the filtered infrared wavelength data matches the wavelength range of the gas, then the gas infrared radiation information is generated.

[0026] Furthermore, the method also includes:

[0027] The spectral colors in the gas cloud spectral information are classified based on reference color information for different gas concentrations.

[0028] If the coordinate range of the target concentration spectral color is less than or equal to the preset concentration coordinate range, then spectral bumps are generated in the gas cloud spectral information.

[0029] If the coordinate range of the target concentration spectral color is greater than the preset concentration coordinate range, then the spectral convex surface in the generated gas cloud spectral information is divided.

[0030] Furthermore, the method also includes:

[0031] If the gas cloud spectral information includes spectral bumps and spectral convex surfaces, then the light imaging device corresponding to the gas cloud spectral information outputs monitoring anomaly warning information.

[0032] According to another aspect of the present invention, a gas leak cloud spectral video monitoring and early warning system is provided, comprising:

[0033] The acquisition module is used to acquire visible light video information and gas infrared radiation information of the gas pipeline, wherein the visible light video information and gas infrared radiation information are obtained by a light imaging device located at the pipeline transmission node of the gas pipeline;

[0034] The fusion module is used to analyze the light information in the visible light video information and fuse the analyzed spectral information with the gas infrared radiation information to obtain gas cloud spectral information;

[0035] The search module is used to search for the gas leak location based on the optical distance mapping relationship corresponding to the spectral convex point or the spectral convex surface when the spectral convex point or the spectral convex surface in the gas cloud spectral information is greater than a preset convex point threshold or a preset convex surface threshold.

[0036] The output module is used to output an abnormal monitoring warning if the gas leak location is found.

[0037] Furthermore, the fusion module is specifically used to divide the light information in the visible light video information according to a preset visible light frequency, and to perform spectral conversion on the different light rays after division to obtain spectral information; wherein, the preset visible light frequency is determined for different light rays under different gas concentrations.

[0038] Furthermore, the fusion module is specifically used to determine the gas non-uniformity range of the gas infrared radiation information based on the gas contrast concentration mapping relationship. The gas contrast concentration mapping relationship is pre-configured with gas non-uniformity ranges corresponding to different gas infrared radiation information. The gas non-uniformity range is used to characterize the distance of non-uniform diffusion of gas at different concentrations in the air. Under the condition that the first coordinate system corresponding to the gas non-uniformity range is aligned with the second coordinate system corresponding to the spectral information, the first rendering color corresponding to the spectral information and the second rendering color corresponding to the gas infrared radiation information are superimposed and rendered to obtain gas cloud spectral information.

[0039] Further, the search module is specifically used to determine the device identifier corresponding to the spectral convex point or the spectral convex surface, the device identifier being used to characterize the positional order of the light-capturing device on the pipeline transmission node; determine the expected leakage location spacing between the spectral convex point or the spectral convex surface based on the device identifier; search for the existence of a target leakage location from the light distance mapping relationship according to the expected leakage location spacing, the light distance mapping relationship being used to characterize the correspondence between different distance locations and different gas concentrations blocking light; and determine the searched target leakage location as the gas leakage location.

[0040] Furthermore, the light-based imaging device includes a video imaging device and an infrared imaging device.

[0041] The acquisition module is specifically used to acquire video image data transmitted by the video shooting device, and to filter the video image data according to a preset light filtering frequency; if the filtered video image data has a continuous light relationship, then the visible light video information is generated; to acquire infrared wavelength data transmitted by the infrared shooting device, and to filter the infrared wavelength data according to a preset abnormal infrared wave data; if the filtered infrared wavelength data matches the wavelength range of the gas, then the gas infrared radiation information is generated.

[0042] Furthermore, the system also includes:

[0043] The classification module is used to classify the spectral colors in the gas cloud spectral information based on reference color information of different gas concentrations;

[0044] The first generation module is used to divide and generate spectral bumps in the gas cloud spectral information if the coordinate range of the target concentration spectral color is less than or equal to the preset concentration coordinate range.

[0045] The second generation module is used to divide and generate the spectral convex surface in the gas cloud spectral information if the coordinate range of the target concentration spectral color is greater than the preset concentration coordinate range.

[0046] Furthermore,

[0047] The output module is further configured to output monitoring anomaly warning information based on the light imaging device corresponding to the gas cloud spectral information if the gas cloud spectral information includes spectral bumps and spectral convex surfaces.

[0048] According to another aspect of the present invention, a storage medium is provided, wherein at least one executable instruction is stored therein, the executable instruction causing a processor to perform an operation corresponding to the above-described gas leak cloud spectrum video monitoring and early warning method.

[0049] According to another aspect of the present invention, a terminal is provided, comprising: a processor, a memory, a communication interface, and a communication bus, wherein the processor, the memory, and the communication interface communicate with each other through the communication bus;

[0050] The memory is used to store at least one executable instruction, which causes the processor to perform the operation corresponding to the above-described gas leak cloud spectrum video monitoring and early warning method.

[0051] By employing the above-described technical solutions, the technical solutions provided by the embodiments of the present invention have at least the following advantages:

[0052] This invention provides a gas leak cloud spectral video monitoring and early warning method and system. Compared with the prior art, the embodiments of this invention acquire visible light video information and gas infrared radiation information of the gas pipeline. The visible light video information and gas infrared radiation information are obtained by a light-capturing device located at the pipeline transmission node of the gas pipeline. The light information in the visible light video information is analyzed, and the obtained spectral information is fused with the gas infrared radiation information to obtain gas cloud spectral information. When the spectral convexity or spectral convexity in the gas cloud spectral information is greater than a preset convexity threshold or a preset convexity threshold, the gas leak location is searched based on the optical distance mapping relationship corresponding to the spectral convexity or spectral convexity. If the gas leak location exists, monitoring anomaly early warning information is output. This realizes the identification of gas leaks based on light information in the video, improves the accuracy of leak monitoring, greatly reduces gas safety hazards, and improves the effectiveness of gas leak location identification, thereby improving the accuracy of gas leak monitoring and early warning.

[0053] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0054] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0055] Figure 1 This invention provides a flowchart of a gas leak cloud spectral video monitoring and early warning method according to an embodiment of the present invention.

[0056] Figure 2 This diagram illustrates a block diagram of a gas leak cloud spectral video monitoring and early warning system provided by an embodiment of the present invention.

[0057] Figure 3 A schematic diagram of the structure of a terminal provided in an embodiment of the present invention is shown. Detailed Implementation

[0058] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0059] This invention provides a gas leak cloud spectral video monitoring and early warning method, such as... Figure 1 As shown, the method includes:

[0060] 101. Obtain visible light video information and gas infrared radiation information of gas pipelines.

[0061] In this embodiment of the invention, the current execution end is a digital system with comprehensive functions such as servers and management platforms owned by the gas company. The current execution end transmits data with a light-emitting imaging device located at the pipeline transmission node of the gas pipeline to obtain the data content captured by the light-emitting imaging device. That is, visible light video information and gas infrared radiation information are obtained through the light-emitting imaging device located at the pipeline transmission node of the gas pipeline. The light-emitting imaging device includes a video imaging device and an infrared imaging device. In this case, the visible light video information is obtained by capturing images of the gas surrounding the gas pipeline through the video imaging device (such as a camera), and the gas infrared radiation information is obtained by capturing images of the gas surrounding the gas pipeline through the infrared imaging device (such as an infrared camera).

[0062] It should be noted that the gas pipelines in this embodiment of the invention can be either straight or non-straight. To improve the effectiveness of gas leak monitoring, for straight pipelines, transmission nodes can be configured at preset distances, such as one node every 30 meters or 100 meters. For non-straight pipelines, transmission nodes can be configured at each inflection point. This embodiment of the invention does not impose specific limitations, in order to accurately acquire visible light video information and gas infrared radiation information for each segment in a straight layout. Furthermore, since this embodiment of the invention requires acquiring video information under visible light, the gas pipelines in this embodiment are all laid out under light, and the information is acquired using light-based imaging equipment.

[0063] 102. Analyze the light information in the visible light video information, and fuse the obtained spectral information with the gas infrared radiation information to obtain gas cloud spectral information.

[0064] In this embodiment of the invention, since the visible light video information is captured by photographing gas under visible light, the light information in the visible light video information varies depending on the concentration of the gas. Therefore, the light information in the visible light video information is analyzed. Subsequently, after analyzing the light information to obtain spectral information, the spectral information is fused with the gas infrared radiation information to obtain gas cloud spectral information used to determine whether gas is leaking. During the fusion process, the gas non-uniformity range can be first determined based on the gas concentration mapping relationship. Then, the first coordinate system corresponding to this gas non-uniformity range is aligned with the second coordinate system corresponding to the spectral information, and color rendering is performed to obtain the gas cloud spectral information.

[0065] 103. When the spectral convexity or spectral convexity in the gas cloud spectral information is greater than the preset convexity threshold or preset convexity threshold, the gas leak location is searched based on the optical distance mapping relationship corresponding to the spectral convexity or the spectral convexity.

[0066] In this embodiment of the invention, to accurately determine the leak point on the gas pipeline, the current execution terminal compares the spectral convex points in the gas cloud spectral information with a preset convex point threshold, or compares the spectral convex surfaces in the gas cloud spectral information with a preset convex surface threshold. This allows for the search of the gas leak location when the spectral convex point is greater than the preset convex point threshold or the spectral convex surface threshold, respectively. Here, a spectral convex point is the point with the highest gradient of gas concentration value represented by the spectrum, and a spectral convex surface is the surface with the highest gradient of gas concentration value represented by the spectrum, thus correlating gas concentration with the spectrum.

[0067] It should be noted that in this embodiment of the invention, the current execution end searches for the gas leak location based on the optical distance mapping relationship corresponding to the spectral convex point or spectral convex surface. At this time, the optical distance mapping relationship is used to characterize the correspondence between different distance locations and different gas concentrations blocking light. It can be obtained by pre-measuring and configuring the blocking of light for different gas concentrations. This embodiment of the invention does not make specific limitations.

[0068] 104. If the gas leak location is found, output an abnormal monitoring warning message.

[0069] In this embodiment of the invention, if the current execution terminal detects a gas leak location based on the optical distance mapping relationship, it generates a monitoring anomaly warning message to alert the leak point. In this embodiment, the monitoring anomaly warning message can be in the form of a siren, a dialog box, an SMS message, or an email, thus accurately instructing technicians to investigate and handle the gas leak location.

[0070] It should be noted that, since the current execution end is a digital system with comprehensive functions such as servers and management platforms, it can not only analyze the concentration based on gas cloud spectral information, but also judge the temperature of the leaked gas. If the temperature is high, the color used to represent the temperature in the gas cloud spectral information will be darker, thus indicating that there may be a risk of combustion and explosion at this leak point, so as to provide a warning of flammability at the same time. This embodiment of the invention does not make specific limitations.

[0071] In another embodiment of the invention, for further definition and explanation, the step of parsing the light information in the visible light video information includes:

[0072] The light information in the visible light video information is divided according to a preset visible light frequency, and the different light rays after division are subjected to spectral conversion to obtain spectral information.

[0073] To accurately analyze the light information in visible light video, the current execution terminal divides the light information based on a preset visible light frequency to identify different light rays. This preset visible light frequency is determined for different light rays under different gas concentrations, so that in environments with varying gas concentrations during a gas leak, the corresponding light ray is determined according to its frequency. Different light rays may correspond to different visible light frequencies within the same gas concentration, or the same light ray may have different visible light frequencies in different gas concentrations. This embodiment of the invention is configured based on the visible light frequency within the gas concentration, and this embodiment does not impose specific limitations. For example, in gas concentration a, the visible light frequency of red light is x, and the visible light frequency of green light is y; for red light, the visible light frequency in gas concentration a is d, and the visible light frequency in gas concentration b is f. Once the current execution end determines that the light information is a specific light ray, it performs spectral conversion on this light ray, that is, arranges the monochromatic light rays in order according to the wavelength (or frequency) to draw a graph, thereby obtaining a spectral graph or spectral information. At this time, when arranging the graph, it can be drawn according to the natural light color corresponding to the wavelength, or it can be drawn according to the set color corresponding to the wavelength. This embodiment of the invention does not make specific limitations, thereby obtaining spectral information with high flexibility and meeting visualization requirements.

[0074] In another embodiment of the invention, for further definition and explanation, the step of fusing the analyzed spectral information with the gas infrared radiation information to obtain gas cloud spectral information includes:

[0075] The range of gas non-uniformity of the gas infrared radiation information is determined based on the gas concentration contrast mapping relationship.

[0076] Under the condition that the first coordinate system corresponding to the gas non-uniformity range is aligned with the second coordinate system corresponding to the spectral information, the first rendering color corresponding to the spectral information and the second rendering color corresponding to the gas infrared radiation information are superimposed and rendered to obtain the gas cloud spectral information.

[0077] To obtain effective gas cloud spectral information, in this embodiment of the invention, when fusing spectral information with gas infrared radiation information, the gas non-uniformity range of the gas infrared radiation information is first determined based on the gas contrast concentration mapping relationship. This gas non-uniformity range characterizes the distance of non-uniform diffusion of gas at different concentrations in the air. Higher gas concentrations result in greater non-uniform diffusion distances. Furthermore, the gas infrared radiation information can characterize either the diffusion distance or concentration. Therefore, in this embodiment of the invention, the gas non-uniformity range corresponding to different gas infrared radiation information in the configured gas contrast concentration mapping relationship can be pre-determined for direct matching and determination during fusion. This embodiment of the invention does not impose specific limitations.

[0078] It should be noted that, in this embodiment of the invention, after determining the gas non-uniformity range, the current execution end determines a coordinate system in conjunction with the light imaging device. Specifically, the light imaging device is used as the origin, and the horizontal and vertical directions correspond to the horizontal and vertical directions, respectively, to determine a first coordinate system. At this time, the determined gas non-uniformity range is marked in the first coordinate system. Simultaneously, since the spectral information is plotted according to the wavelength (or frequency) of monochromatic light, a second coordinate system is determined with the light imaging device as the origin, and the horizontal and vertical directions correspond to the horizontal and vertical directions, respectively. At this time, the spectral information can be marked in the second coordinate system. Furthermore, since both the spectral information and the gas non-uniformity range are represented by corresponding colors, the current execution end superimposes the first rendering color in the spectral information with the second rendering color corresponding to the gas infrared radiation information to obtain the gas cloud spectral information. For different visualization needs, the first and second rendering colors (not limited to a single color) can be configured by technicians for superimposed rendering, using the different color rendering characteristics of color superposition to display the gas cloud spectral information.

[0079] In another embodiment of the invention, for further definition and explanation, the step of searching for the gas leak location based on the optical distance mapping relationship corresponding to the spectral convex point or the spectral convex surface includes:

[0080] Determine the device identifier corresponding to the spectral bump or the spectral convex surface;

[0081] The expected leakage location spacing between the spectral bumps or the spectral convex surfaces is determined based on the device identifier;

[0082] The search is performed based on the optical distance mapping relationship to determine if a target leak location exists, according to the expected leak location spacing.

[0083] The location of the target leak was determined as the gas leak location.

[0084] To accurately pinpoint the location of a gas leak, the current execution end, when searching for the leak location based on the optical distance mapping relationship, first determines the device identifier corresponding to the spectral convex point or the spectral convex surface. The device identifier characterizes the positional order of the optical imaging devices on the pipeline transmission node; that is, each optical imaging device, when configured on the pipeline transmission node, is marked with a device identifier to associate the device identifier with the pipeline position. This embodiment of the invention does not impose specific limitations. Since the spectral convex point and spectral convex surface are based on images captured by the optical imaging devices, the corresponding device identifier can be determined, thereby determining the expected leak location spacing between the spectral convex points or spectral convex surfaces. At this point, the device identifier and the pipeline transmission node corresponding to this device identifier can be determined, thereby determining the expected leak location spacing at positions before, after, or to the left or right of this pipeline transmission node. The preset leakage location spacing is the distance between the point position or the center position of the spectral convex point or spectral convex surface obtained by the light imaging device and the light imaging device. For example, in the captured image, the farther the convex point is, the more the preset leakage location spacing can be determined based on the distance between the point position and the origin of the coordinate system. This embodiment of the invention does not make specific limitations.

[0085] It should be noted that, since the light distance mapping relationship is used to characterize the correspondence between different distance positions and different gas concentrations blocking light, the light distance mapping relationship is pre-configured with a correspondence between different leak location distances and corresponding gas concentrations to determine the leak location. For example, if the leak location distance is 0.8 meters and the gas concentration is 'a', the leak location cannot be determined; however, if the leak location distance is 0.1 meters and the gas concentration is 'a', the leak location can be determined, and the leak location is the position 0.1 meters away from the light imaging device. This embodiment of the invention does not impose specific limitations on this. Furthermore, the light distance mapping relationship is configured based on gas leak measurements at different leak points under different gas concentrations, and this embodiment of the invention does not impose specific limitations on this.

[0086] In another embodiment of the invention, for further definition and explanation, the step of obtaining visible light video information and gas infrared radiation information of the gas pipeline includes:

[0087] The video image data transmitted by the video shooting device is acquired, and the video image data is filtered according to a preset light filtering frequency;

[0088] If the filtered video image data has a continuous relationship of light rays, then the visible light video information is generated;

[0089] Acquire the infrared wavelength data transmitted by the infrared imaging device, and filter the infrared wavelength data according to preset abnormal infrared wave data;

[0090] If the filtered infrared wavelength data matches the wavelength range of the gas, then the gas infrared radiation information is generated.

[0091] To improve the effectiveness of gas leak monitoring by determining gas leaks based on visible light video information and gas infrared radiation information, the current execution terminal first acquires video image data transmitted by the video capturing device and filters the video image data according to a preset light filtering frequency. The preset light filtering frequency is the frequency greater than or less than the frequency at which different gas concentrations affect light transmission. This frequency can be configured based on the needs of technicians regarding the concentration of the leaking gas; this embodiment of the invention does not impose specific limitations. This removes other light sources that affect gas concentration monitoring. Furthermore, since different gas concentrations have different light penetration, when removing other light sources that affect light identification in the gas, to ensure the usability of light information in the visible light video data, the current execution terminal determines whether the light rays in the filtered video image data have light continuity. This means identifying whether the light rays in the image can be connected into a straight line, or whether the distance between the light rays does not exceed a preset threshold, so that visible light video information is obtained under the premise of light continuity.

[0092] In addition, when the current execution end acquires gas infrared radiation information, specifically, it first acquires infrared wavelength data transmitted by the infrared imaging device and filters the infrared wavelength data according to preset abnormal infrared wave data. The preset abnormal infrared wave data refers to wavelengths greater than or less than the normal wavelengths for infrared imaging of gas. This can be configured based on the technician's requirements for the concentration of leaked gas; this embodiment of the invention does not impose specific limitations. This removes light rays of other wavelengths that affect gas concentration detection. Furthermore, since the penetrability of different gas concentrations during infrared radiation varies, when removing wavelengths that affect the identification of infrared wavelengths in gas, to ensure the usability of wavelengths in the infrared wavelength data, the current execution end determines whether the filtered infrared wavelength data matches the gas wavelength range. This involves identifying whether the wavelengths of infrared rays penetrating at different gas concentrations match the gas wavelength. If they match, it indicates that the infrared wavelength is usable, and thus, gas infrared radiation information is generated. This embodiment of the invention does not impose specific limitations. Additionally, the gas wavelength range can be configured based on the requirements for identifying gas leaks; this embodiment of the invention does not impose specific limitations.

[0093] In another embodiment of the invention, for further definition and explanation, the steps further include:

[0094] The spectral colors in the gas cloud spectral information are classified based on reference color information for different gas concentrations.

[0095] If the coordinate range of the target concentration spectral color is less than or equal to the preset concentration coordinate range, then spectral bumps are generated in the gas cloud spectral information.

[0096] If the coordinate range of the target concentration spectral color is greater than the preset concentration coordinate range, then the spectral convex surface in the generated gas cloud spectral information is divided.

[0097] To achieve gas leak identification and monitoring based on spectral convex points and spectral convex surfaces, the current execution terminal needs to generate spectral convex points or spectral convex surfaces respectively. Specifically, after acquiring the gas cloud spectral information, the current execution terminal classifies the spectral colors in the gas cloud spectral information according to the pre-configured gas concentration reference color information, thereby obtaining the colors of different regional ranges (or coordinate ranges). At this time, the color surrounded by other regional ranges or coordinate ranges in different regional ranges is taken as the target concentration spectral color. The coordinate range of this target concentration spectral color is compared with the preset concentration coordinate range. If the coordinate range of the target concentration spectral color is less than or greater than the preset concentration coordinate range, it means that the target concentration spectral color can be displayed as a point, and therefore, this target concentration spectral color is classified as a spectral convex point. If the coordinate range of the target concentration spectral color is greater than the preset concentration coordinate range, it means that the target concentration spectral color can be displayed as a surface, and therefore, this target concentration color is classified as a spectral convex surface. The preset concentration spectral color is configured based on the display requirements between points and surfaces, and this embodiment of the invention does not impose specific limitations.

[0098] In another embodiment of the invention, for further definition and explanation, the steps further include:

[0099] If the gas cloud spectral information includes spectral bumps and spectral convex surfaces, then the light imaging device corresponding to the gas cloud spectral information outputs monitoring anomaly warning information.

[0100] To improve the flexibility and effectiveness of monitoring and early warning of gas leaks, the current execution terminal, after obtaining the gas cloud spectral information, determines whether this information includes both spectral convexities and spectral surfaces. If both are present, it indicates a leak at the pipeline location corresponding to the light-emitting device. Therefore, the current execution terminal directly outputs an anomaly warning message. Furthermore, in this embodiment, to quickly determine the location of the gas leak, the pipeline location is determined by combining the gas cloud spectral information (including spectral convexities and spectral surfaces) with the pipeline transmission node corresponding to the light-emitting device. This pipeline location is then marked in the generated anomaly warning message for manual inspection.

[0101] This invention provides a gas leak cloud spectral video monitoring and early warning method. Compared with the prior art, this invention acquires visible light video information and gas infrared radiation information of a gas pipeline, which is obtained by a light-capturing device located at a pipeline transmission node. The light information in the visible light video information is analyzed, and the obtained spectral information is fused with the gas infrared radiation information to obtain gas cloud spectral information. When the spectral convexity or spectral convexity in the gas cloud spectral information is greater than a preset convexity threshold or a preset convexity threshold, the gas leak location is searched based on the optical distance mapping relationship corresponding to the spectral convexity or spectral convexity. If the gas leak location exists, an abnormal monitoring early warning message is output. This method achieves gas leak identification based on light information in the video, improves the accuracy of leak detection, greatly reduces gas safety hazards, and improves the effectiveness of gas leak location identification, thereby improving the accuracy of gas leak monitoring and early warning.

[0102] Furthermore, as a response to the above Figure 1 The implementation of the method shown in this invention provides a gas leak cloud spectral video monitoring and early warning system, such as... Figure 2 As shown, the system includes:

[0103] The acquisition module 21 is used to acquire visible light video information and gas infrared radiation information of the gas pipeline. The visible light video information and gas infrared radiation information are obtained by a light shooting device located at the pipeline transmission node of the gas pipeline.

[0104] The fusion module 22 is used to analyze the light information in the visible light video information and fuse the analyzed spectral information with the gas infrared radiation information to obtain gas cloud spectral information;

[0105] The search module 23 is used to search for the gas leak location based on the optical distance mapping relationship corresponding to the spectral convex point or the spectral convex surface when the spectral convex point or the spectral convex surface in the gas cloud spectral information is greater than the preset convex point threshold or the preset convex surface threshold.

[0106] The output module is used to output an abnormal monitoring warning if the gas leak location is found.

[0107] Furthermore, the fusion module is specifically used to divide the light information in the visible light video information according to a preset visible light frequency, and to perform spectral conversion on the different light rays after division to obtain spectral information; wherein, the preset visible light frequency is determined for different light rays under different gas concentrations.

[0108] Furthermore, the fusion module is specifically used to determine the gas non-uniformity range of the gas infrared radiation information based on the gas contrast concentration mapping relationship. The gas contrast concentration mapping relationship is pre-configured with gas non-uniformity ranges corresponding to different gas infrared radiation information. The gas non-uniformity range is used to characterize the distance of non-uniform diffusion of gas at different concentrations in the air. Under the condition that the first coordinate system corresponding to the gas non-uniformity range is aligned with the second coordinate system corresponding to the spectral information, the first rendering color corresponding to the spectral information and the second rendering color corresponding to the gas infrared radiation information are superimposed and rendered to obtain gas cloud spectral information.

[0109] Further, the search module is specifically used to determine the device identifier corresponding to the spectral convex point or the spectral convex surface, the device identifier being used to characterize the positional order of the light-capturing device on the pipeline transmission node; determine the expected leakage location spacing between the spectral convex point or the spectral convex surface based on the device identifier; search for the existence of a target leakage location from the light distance mapping relationship according to the expected leakage location spacing, the light distance mapping relationship being used to characterize the correspondence between different distance locations and different gas concentrations blocking light; and determine the searched target leakage location as the gas leakage location.

[0110] Furthermore, the light-based imaging device includes a video imaging device and an infrared imaging device.

[0111] The acquisition module is specifically used to acquire video image data transmitted by the video shooting device, and to filter the video image data according to a preset light filtering frequency; if the filtered video image data has a continuous light relationship, then the visible light video information is generated; to acquire infrared wavelength data transmitted by the infrared shooting device, and to filter the infrared wavelength data according to a preset abnormal infrared wave data; if the filtered infrared wavelength data matches the wavelength range of the gas, then the gas infrared radiation information is generated.

[0112] Furthermore, the system also includes:

[0113] The classification module is used to classify the spectral colors in the gas cloud spectral information based on reference color information of different gas concentrations;

[0114] The first generation module is used to divide and generate spectral bumps in the gas cloud spectral information if the coordinate range of the target concentration spectral color is less than or equal to the preset concentration coordinate range.

[0115] The second generation module is used to divide and generate the spectral convex surface in the gas cloud spectral information if the coordinate range of the target concentration spectral color is greater than the preset concentration coordinate range.

[0116] Furthermore,

[0117] The output module is further configured to output monitoring anomaly warning information based on the light imaging device corresponding to the gas cloud spectral information if the gas cloud spectral information includes spectral bumps and spectral convex surfaces.

[0118] This invention provides a gas leak cloud spectral video monitoring and early warning system. Compared with existing technologies, this invention acquires visible light video information and gas infrared radiation information from gas pipelines. This visible light video information and gas infrared radiation information are obtained through a light-capturing device located at a pipeline transmission node in the gas pipeline. The light information in the visible light video information is analyzed, and the obtained spectral information is fused with the gas infrared radiation information to obtain gas cloud spectral information. When the spectral convexity or spectral convexity surface in the gas cloud spectral information is greater than a preset convexity threshold or a preset convexity surface threshold, the gas leak location is searched based on the optical distance mapping relationship corresponding to the spectral convexity or spectral convexity surface. If the gas leak location exists, an abnormal monitoring early warning message is output. This system enables gas leak identification based on light information in the video, improves the accuracy of leak detection, significantly reduces gas safety hazards, and enhances the effectiveness of gas leak location identification, thereby improving the accuracy of gas leak monitoring and early warning.

[0119] According to one embodiment of the present invention, a storage medium is provided, the storage medium storing at least one executable instruction, which can execute the gas leak cloud spectrum video monitoring and early warning method in any of the above method embodiments.

[0120] Figure 3 The diagram shows a structural schematic of a terminal according to an embodiment of the present invention. The specific implementation of the terminal is not limited by the specific embodiments of the present invention.

[0121] like Figure 3 As shown, the terminal may include: a processor 302, a communications interface 304, a memory 306, and a communications bus 308.

[0122] The processor 302, communication interface 304, and memory 306 communicate with each other via communication bus 308.

[0123] Communication interface 304 is used to communicate with other network elements such as clients or other servers.

[0124] The processor 302 is used to execute program 310, which can specifically execute the relevant steps in the above-described embodiment of the gas leak cloud spectrum video monitoring and early warning method.

[0125] Specifically, program 310 may include program code that includes computer operation instructions.

[0126] Processor 302 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention. The terminal may include one or more processors of the same type, such as one or more CPUs; or it may include processors of different types, such as one or more CPUs and one or more ASICs.

[0127] Memory 306 is used to store program 310. Memory 306 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0128] Specifically, program 310 can be used to cause processor 302 to perform the following operations:

[0129] The visible light video information and gas infrared radiation information of the gas pipeline are obtained by a light imaging device located at the pipeline transmission node of the gas pipeline.

[0130] The light information in the visible light video information is analyzed, and the obtained spectral information is fused with the gas infrared radiation information to obtain gas cloud spectral information;

[0131] If the spectral bumps or spectral convexities in the gas cloud spectral information are greater than a preset bump threshold or a preset convexity threshold, the gas leak location is searched based on the optical distance mapping relationship corresponding to the spectral bumps or the spectral convexities.

[0132] If the gas leak location is found, an abnormal monitoring warning will be output.

[0133] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing systems. They can be centralized on a single computing system or distributed across a network of multiple computing systems. Optionally, they can be implemented using program code executable by a computing system, thereby storing them in a storage system for execution by the computing system. In some cases, the steps shown or described can be performed in a different order than those presented herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0134] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for monitoring and early warning of gas leaks using gas cloud spectral video, characterized in that, include: The visible light video information and gas infrared radiation information of the gas pipeline are obtained by a light imaging device located at the pipeline transmission node of the gas pipeline. The light information in the visible light video information is analyzed, and the obtained spectral information is fused with the gas infrared radiation information to obtain gas cloud spectral information; When the spectral bumps or spectral convexities in the gas cloud spectral information are greater than the preset bump threshold or preset convexity threshold, the gas leak location is searched based on the optical distance mapping relationship corresponding to the spectral bumps or the spectral convexities. The optical distance mapping relationship is used to characterize the correspondence between different distance locations and different gas concentrations blocking light. If the gas leak location is found, an abnormal monitoring warning will be output. The parsing of the light information in the visible light video information includes: The light information in the visible light video information is divided according to a preset visible light frequency, and the different light rays after division are subjected to spectral conversion to obtain spectral information; The preset visible light frequency is determined by different light rays at different gas concentrations; The process of fusing the analyzed spectral information with the gas infrared radiation information to obtain gas cloud spectral information includes: The gas non-uniformity range of the gas infrared radiation information is determined based on the gas contrast concentration mapping relationship. The gas non-uniformity range corresponding to different gas infrared radiation information is pre-configured in the gas contrast concentration mapping relationship. The gas non-uniformity range is used to characterize the distance of non-uniform diffusion of gas at different concentrations in the air. Under the condition that the first coordinate system corresponding to the gas non-uniformity range is aligned with the second coordinate system corresponding to the spectral information, the first rendering color corresponding to the spectral information and the second rendering color corresponding to the gas infrared radiation information are superimposed and rendered to obtain the gas cloud spectral information.

2. The method according to claim 1, characterized in that, The method of searching for the gas leak location based on the optical distance mapping relationship corresponding to the spectral convex point or the spectral convex surface includes: The device identifier corresponding to the spectral bump or the spectral convex surface is determined, and the device identifier is used to characterize the positional order of the light imaging device on the pipeline transmission node; The expected leakage location spacing between the spectral bumps or the spectral convex surfaces is determined based on the device identifier; Search for the existence of a target leak location from the optical distance mapping relationship according to the expected leak location spacing; The target leak location found is determined as the gas leak location.

3. The method according to claim 1, characterized in that, The light imaging device includes a video imaging device and an infrared imaging device. The acquisition of visible light video information and gas infrared radiation information from the gas pipeline includes: The video image data transmitted by the video shooting device is acquired, and the video image data is filtered according to a preset light filtering frequency; If the filtered video image data has a continuous relationship of light rays, then the visible light video information is generated; Acquire the infrared wavelength data transmitted by the infrared imaging device, and filter the infrared wavelength data according to preset abnormal infrared wave data; If the filtered infrared wavelength data matches the wavelength range of the gas, then the gas infrared radiation information is generated.

4. The method according to any one of claims 1-3, characterized in that, The method further includes: The spectral colors in the gas cloud spectral information are classified based on reference color information for different gas concentrations. If the coordinate range of the target concentration spectral color is less than or equal to the preset concentration coordinate range, then spectral bumps are generated in the gas cloud spectral information. If the coordinate range of the target concentration spectral color is greater than the preset concentration coordinate range, then the spectral convex surface in the generated gas cloud spectral information is divided.

5. The method according to claim 4, characterized in that, The method further includes: If the gas cloud spectral information includes spectral bumps or spectral convex surfaces, then the light imaging device corresponding to the gas cloud spectral information outputs monitoring anomaly warning information.

6. A gas leak cloud spectral video monitoring and early warning system, characterized in that, include: The acquisition module is used to acquire visible light video information and gas infrared radiation information of the gas pipeline, wherein the visible light video information and gas infrared radiation information are obtained by a light imaging device located at the pipeline transmission node of the gas pipeline; The fusion module is used to analyze the light information in the visible light video information and fuse the analyzed spectral information with the gas infrared radiation information to obtain gas cloud spectral information; The search module is used to search for the gas leak location based on the optical distance mapping relationship corresponding to the spectral convex point or the spectral convex surface when the spectral convex point or the spectral convex surface in the gas cloud spectral information is greater than the preset convex point threshold or the preset convex surface threshold. The optical distance mapping relationship is used to characterize the correspondence between different distance locations and different gas concentrations blocking light. The output module is used to output an abnormal monitoring warning if the gas leak location is found. The fusion module is specifically used to divide the light information in the visible light video information according to a preset visible light frequency, and to perform spectral conversion on the different light rays after division to obtain spectral information; wherein, the preset visible light frequency is determined for different light rays under different gas concentrations; The fusion module is further configured to determine the gas non-uniformity range of the gas infrared radiation information based on the gas contrast concentration mapping relationship. The gas contrast concentration mapping relationship is pre-configured with gas non-uniformity ranges corresponding to different gas infrared radiation information. The gas non-uniformity range is used to characterize the distance of non-uniform diffusion of gas at different concentrations in the air. Under the condition that the first coordinate system corresponding to the gas non-uniformity range is aligned with the second coordinate system corresponding to the spectral information, the first rendering color corresponding to the spectral information and the second rendering color corresponding to the gas infrared radiation information are superimposed and rendered to obtain gas cloud spectral information.

7. A storage medium storing at least one executable instruction, the executable instruction causing a processor to perform an operation corresponding to the gas leak cloud spectral video monitoring and early warning method as described in any one of claims 1-5.

8. A terminal, comprising: The processor, memory, communication interface, and communication bus are provided, wherein the processor, memory, and communication interface communicate with each other via the communication bus. The memory is used to store at least one executable instruction, which causes the processor to perform the operation corresponding to the gas leak cloud spectral video monitoring and early warning method as described in any one of claims 1-5.

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