III-type hydrogen storage cylinder detection method and device based on infrared thermal imaging

Abstract

The invention discloses an III-type hydrogen storage cylinder detection method and device based on infrared thermal imaging, and the method comprises the following steps: S1, scanning an inner container of an III-type hydrogen storage cylinder placed in a heating cabin through infrared thermal imaging equipment, and recording the current temperature distribution of the inner container to obtain a first thermogram; s2, converting the first thermogram into a first digital image, and acquiring a brightness value of each minimum image unit in the first digital image; and S3, performing damage detection on the liner according to the lightness value of each minimum image unit in the first digital image. According to the III-type hydrogen storage cylinder detection method based on infrared thermal imaging, the III-type hydrogen storage cylinder is detected by adopting an infrared thermal imaging technology, so that the efficiency is relatively high, contact with the III-type hydrogen storage cylinder is not needed, and damage to internal materials of the III-type hydrogen storage cylinder can be effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen storage cylinder detection, and in particular to a method and device for detecting type III hydrogen storage cylinders based on infrared thermal imaging. Background Art

[0002] As the use time of Type III hydrogen storage cylinders increases, its inner liner is prone to damage such as cracks, coating shedding, and corrosion. When the damage reaches a certain extent, it will be dangerous if the Type III hydrogen storage cylinder is still used.

[0003] In the related art, the inner liner of Type III hydrogen storage cylinder is usually inspected by manual flaw detection or endoscopic inspection. Not only is the inspection efficiency low, but the contact inspection method is also likely to cause damage to the internal materials of the Type III hydrogen storage cylinder. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a type III hydrogen storage cylinder detection method based on infrared thermal imaging. The infrared thermal imaging technology is used to detect the type III hydrogen storage cylinder, which is not only highly efficient, but also does not require contact with the type III hydrogen storage cylinder, and can effectively avoid damage to the internal materials of the type III hydrogen storage cylinder.

[0005] The technical solution adopted by the present invention is as follows: A method for detecting type III hydrogen storage cylinders based on infrared thermal imaging, characterized in that it includes the following steps: S1, using infrared thermal imaging equipment to scan the inner liner of the type III hydrogen storage cylinder placed in a heating chamber, and recording the current temperature distribution of the inner liner to obtain a first thermal image; S2, converting the first thermal image into a first digital image, and obtaining the brightness value of each minimum image unit in the first digital image; S3, performing damage detection on the inner liner according to the brightness value of each minimum image unit in the first digital image.

[0006] In one embodiment of the present invention, step S3 specifically includes the following steps: S31, calculating a brightness division value according to the maximum brightness value and the minimum brightness value of each minimum image unit in the first digital image, and obtaining each high-brightness minimum image unit according to the brightness division value; S32, calculating the degree of attribution of the corresponding high-brightness minimum image unit to the abnormal minimum image unit according to the image information amount within the first preset range of each high-brightness minimum image unit and the number of high-brightness minimum image units that appear, and marking the high-brightness minimum image unit whose attribution degree is greater than or equal to the preset attribution degree as the abnormal minimum image unit; S33, clustering each of the abnormal minimum image units to obtain a plurality of minimum image unit sets, calculating the confidence value of the corresponding minimum image unit set belonging to the suspected damage range according to the attribution degree and density of each abnormal minimum image unit in each of the minimum image unit sets, and marking the minimum image unit set whose confidence degree is greater than or equal to the preset confidence as the suspected damage range; S34, confirming whether the liner is damaged according to the suspected damage range.

[0007] In one embodiment of the present invention, the degree of attribution of the high-brightness minimum image unit to the abnormal minimum image unit is calculated by the following formula: , in, and are respectively the degree of belonging corresponding to the kth high brightness minimum image unit and the side length of the first preset range, and are respectively the brightness value of the uth minimum image unit in the first preset range corresponding to the kth high brightness minimum image unit and the probability of the brightness value of the uth minimum image unit appearing in the first preset range, is the total number of high-brightness minimum image units within the first preset range.

[0008] In one embodiment of the present invention, the confidence value that the minimum image unit set belongs to the suspected damage range is calculated by the following formula: , in, is the confidence value that the jth minimum image unit set belongs to the suspected damage range, is the variance of the degree of belonging of the abnormal minimum image unit in the jth minimum image unit set, is the density of the abnormal minimum image unit in the jth minimum image unit set.

[0009] In one embodiment of the present invention, an average value of the maximum brightness value and the minimum brightness value is calculated to obtain the brightness division value.

[0010] A type III hydrogen storage cylinder detection device based on infrared thermal imaging, characterized in that it includes the following steps: a first acquisition module, the first acquisition module is used to use infrared thermal imaging equipment to scan the inner liner of the type III hydrogen storage cylinder placed in a heating chamber, and record the current temperature distribution of the inner liner to obtain a first thermal image; a second acquisition module, the second acquisition module is used to convert the first thermal image into a first digital image, and obtain the brightness value of each minimum image unit in the first digital image; a damage detection module, the damage detection module is used to perform damage detection on the inner liner according to the brightness value of each minimum image unit in the first digital image.

[0011] A computer device comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the above-mentioned type III hydrogen storage cylinder detection method based on infrared thermal imaging is implemented.

[0012] A non-temporary computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-mentioned type III hydrogen storage cylinder detection method based on infrared thermal imaging.

[0013] Beneficial effects of the present invention: The present invention uses infrared thermal imaging technology to detect Type III hydrogen storage cylinders, which is not only highly efficient but also does not require contact with the Type III hydrogen storage cylinders, and can effectively avoid damage to the internal materials of the Type III hydrogen storage cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a flow chart of a method for detecting type III hydrogen storage cylinders based on infrared thermal imaging according to an embodiment of the present invention; Figure 2 It is a block diagram of a Type III hydrogen storage cylinder detection device based on infrared thermal imaging according to an embodiment of the present invention. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] Figure 1 The present invention is a flowchart of a method for detecting type III hydrogen storage cylinders based on infrared thermal imaging according to an embodiment of the present invention.

[0017] like Figure 1As shown, the method for detecting type III hydrogen storage cylinders based on infrared thermal imaging according to an embodiment of the present invention may include the following steps: S1, using infrared thermal imaging equipment to scan the inner liner of the type III hydrogen storage cylinder placed in the heating chamber, and record the current temperature distribution of the inner liner to obtain a first thermal image; Among them, the current heating temperature in the heating chamber may be the first preset temperature.

[0018] S2, converting the first thermal image into a first digital image, and obtaining the brightness value of each minimum image unit in the first digital image.

[0019] In one embodiment of the present invention, when using infrared thermal imaging equipment to scan the inner liner of a Type III hydrogen storage cylinder placed in a heating chamber, scanning can be performed at different angles to obtain multiple first thermal images, and steps S1-S4 of the present invention are used to detect damage to the inner liner for each first thermal image.

[0020] It should be noted that, at each scanning angle, the inner tank of the Type III hydrogen storage cylinder can be scanned multiple times at different distances to obtain multiple second thermal images, and the multiple second thermal images can be converted into second digital images respectively, and the first digital image can be selected from the multiple second digital images.

[0021] In one embodiment of the present invention, selecting a first digital image from a plurality of second digital images comprises the following steps: S21, respectively calculating the gradient amplitude of each minimum image unit of each second digital image, and calculating the brightness change rate of the second digital image according to the gradient amplitude.

[0022] S22, extracting a minimum image unit whose gradient amplitude is greater than or equal to a preset gradient amplitude as a target minimum image unit.

[0023] S23, calculating the position dispersion degree of the brightness change in the second digital image according to the position information of each target minimum image unit.

[0024] S24, calculating a weight factor of the corresponding second digital image according to the position dispersion degree.

[0025] The weight factor of the second digital image can be calculated by the following formula: , in, is the weight factor of the mth second digital image, is the position dispersion degree corresponding to the mth second digital image, is the minimum position dispersion degree among the position dispersion degrees corresponding to the second digital images.

[0026] S25, calculating the image quality score of the corresponding second digital image according to the weight factor and the brightness change rate corresponding to the second digital image.

[0027] In one embodiment of the present invention, it can be determined whether the number of target minimum image units in the second digital image is greater than or equal to a preset number. If the number of target minimum image units in the second digital image is greater than or equal to the preset number, the weight factor and the brightness change rate are multiplied to obtain the image quality score of the second digital image; if the number of target minimum image units in the second digital image is less than the preset number, the brightness change rate is used as the image quality score of the second digital image.

[0028] S26, extracting the second digital image with the largest image quality score from the image quality scores of the second digital images as the first digital image.

[0029] Thus, the digital image with the highest quality can be extracted from the multiple second digital images as the first digital image, thereby further improving the accuracy of detecting the type III hydrogen storage cylinder.

[0030] S3, performing damage detection on the liner according to the brightness value of each minimum image unit in the first digital image.

[0031] In one embodiment of the present invention, step S3 specifically includes the following steps: S31, calculating a brightness division value according to the maximum brightness value and the minimum brightness value of each minimum image unit in the first digital image, and obtaining each high-brightness minimum image unit according to the brightness division value.

[0032] Specifically, a maximum brightness value and a minimum brightness value are extracted from the brightness values ​​of each minimum image unit in the first digital image, and a brightness division value is obtained based on the maximum brightness value and the minimum brightness value, and a minimum image unit in the first digital image whose brightness value is greater than the brightness division value is confirmed as a high-brightness minimum image unit.

[0033] In one embodiment of the present invention, the average value of the maximum brightness value and the minimum brightness value is calculated to obtain the brightness division value. In other embodiments of the present invention, the brightness division value can also be calculated by other methods, which can be selected according to actual conditions.

[0034] S32, based on the amount of image information within the first preset range of each high-brightness minimum image unit and the number of high-brightness minimum image units that appear, calculate the degree of attribution of the corresponding high-brightness minimum image unit to the abnormal minimum image unit, and mark the high-brightness minimum image unit whose attribution degree is greater than or equal to the preset attribution degree as the abnormal minimum image unit.

[0035] Specifically, based on the number of high-brightness minimum image units appearing within the first preset range of each high-brightness minimum image unit and the amount of image information within the first preset range of the target high-brightness minimum image unit, the degree of attribution of the corresponding high-brightness minimum image unit to the abnormal minimum image unit is calculated, and when the degree of attribution is greater than or equal to the preset degree of attribution, the corresponding high-brightness minimum image unit is marked as an abnormal minimum image unit.

[0036] In one embodiment of the present invention, the degree of attribution of the high-brightness minimum image unit to the abnormal minimum image unit is calculated by the following formula: , in, is the degree of attribution of the kth high brightness minimum image unit to the abnormal minimum image unit, is the side length of the first preset range corresponding to the kth high brightness minimum image unit, is the total number of minimum image units in the first preset range corresponding to the kth high-brightness minimum image unit, is the brightness value of the uth minimum image unit in the first preset range corresponding to the kth high brightness minimum image unit, is the probability that the brightness value of the uth minimum image unit in the first preset range corresponding to the kth high brightness minimum image unit appears in the first preset range, is the total number of high-brightness minimum image units within the first preset range corresponding to the k-th high-brightness minimum image unit, is the amount of image information within the first preset range corresponding to the kth high-brightness minimum image unit.

[0037] S33, clustering each of the abnormal minimum image units to obtain multiple minimum image unit sets, calculating the confidence value of the corresponding minimum image unit set belonging to the suspected damage range according to the attribution degree and density of each abnormal minimum image unit in each of the minimum image unit sets, and marking the minimum image unit set whose confidence is greater than or equal to the preset confidence as the suspected damage range.

[0038] Specifically, each abnormal minimum image unit is clustered to obtain multiple minimum image unit sets, and the confidence value that the corresponding minimum image unit set belongs to the suspected damage range is calculated according to the attribution degree of each abnormal minimum image unit in each minimum image unit set and the density of abnormal minimum image units in the minimum image unit set. When the confidence is greater than or equal to the preset confidence, the corresponding minimum image unit set is marked as the suspected damage range.

[0039] In one embodiment of the present invention, the confidence value of the minimum image unit set belonging to the suspected damage range is calculated by the following formula: , in, is the confidence value that the jth minimum image unit set belongs to the suspected damage range, is the variance of the degree of belonging of the abnormal minimum image unit in the jth minimum image unit set, is the density of abnormal minimum image units in the jth minimum image unit set.

[0040] S34, confirm whether the inner tank is damaged according to the suspected damage range.

[0041] Specifically, after acquiring the first digital image, the suspected damage range can be extracted from the first digital image according to the brightness value of each minimum image unit in the first digital image, and then whether the inner liner is damaged can be confirmed based on the suspected damage range, thereby avoiding the situation where the high-brightness minimum image unit in the non-damage range (which will not affect the tiny defects of the Type III hydrogen storage cylinder) causes misjudgment of the detection results, thereby improving the accuracy and efficiency of the detection.

[0042] In summary, according to the method for detecting type III hydrogen storage cylinders based on infrared thermal imaging according to an embodiment of the present invention, an infrared thermal imaging device is used to scan the inner liner of the type III hydrogen storage cylinder placed in the heating chamber, and the current temperature distribution of the inner liner is recorded to obtain a first thermal image, and the first thermal image is converted into a first digital image, and the brightness value of each minimum image unit in the first digital image is obtained, and the inner liner is damaged according to the brightness value of each minimum image unit in the first digital image. Therefore, the use of infrared thermal imaging technology to detect type III hydrogen storage cylinders is not only highly efficient, but also does not require contact with the type III hydrogen storage cylinders, and can effectively avoid damage to the internal materials of the type III hydrogen storage cylinders.

[0043] Corresponding to the type III hydrogen storage cylinder detection method based on infrared thermal imaging of the above embodiment, the present invention also proposes a type III hydrogen storage cylinder detection device based on infrared thermal imaging.

[0044] like Figure 2 As shown, the type III hydrogen storage cylinder detection device based on infrared thermal imaging according to an embodiment of the present invention may include: a first acquisition module 100 , a second acquisition module 200 and a damage detection module 300 .

[0045] Among them, the first acquisition module is used to use infrared thermal imaging equipment to scan the inner liner of the Type III hydrogen storage cylinder placed in the heating chamber, and record the current temperature distribution of the inner liner to obtain a first thermal image; the second acquisition module is used to convert the first thermal image into a first digital image, and obtain the brightness value of each minimum image unit in the first digital image; the damage detection module is used to detect damage to the inner liner according to the brightness value of each minimum image unit in the first digital image.

[0046] In one embodiment of the present invention, the damage detection module 300 is specifically used to: calculate a brightness division value based on the maximum brightness value and the minimum brightness value of each minimum image unit in the first digital image, and obtain each high-brightness minimum image unit based on the brightness division value; calculate the degree of attribution of the corresponding high-brightness minimum image unit to the abnormal minimum image unit based on the image information amount within the first preset range of each high-brightness minimum image unit and the number of high-brightness minimum image units that appear, and mark the high-brightness minimum image unit whose attribution degree is greater than or equal to the preset attribution degree as the abnormal minimum image unit; cluster each of the abnormal minimum image units to obtain a plurality of minimum image unit sets, calculate the confidence value that the corresponding minimum image unit set belongs to the suspected damage range based on the attribution degree and density of each abnormal minimum image unit in each of the minimum image unit sets, and mark the minimum image unit set whose confidence degree is greater than or equal to the preset confidence as the suspected damage range; confirm whether the liner is damaged based on the suspected damage range.

[0047] In one embodiment of the present invention, the damage detection module 300 is specifically used to calculate the degree of attribution of the high brightness minimum image unit to the abnormal minimum image unit by the following formula: , in, and are respectively the degree of belonging corresponding to the kth high brightness minimum image unit and the side length of the first preset range, and are respectively the brightness value of the uth minimum image unit in the first preset range corresponding to the kth high brightness minimum image unit and the probability of the brightness value of the uth minimum image unit appearing in the first preset range, is the total number of high-brightness minimum image units within the first preset range.

[0048] In one embodiment of the present invention, the damage detection module 300 is specifically used to calculate the confidence value that the minimum image unit set belongs to the suspected damage range by the following formula: , in, is the confidence value that the jth minimum image unit set belongs to the suspected damage range, is the variance of the degree of belonging of the abnormal minimum image unit in the jth minimum image unit set, is the density of the abnormal minimum image unit in the jth minimum image unit set.

[0049] In one embodiment of the present invention, an average value of the maximum brightness value and the minimum brightness value is calculated to obtain the brightness division value.

[0050] It should be noted that for details not disclosed in the Type III hydrogen storage cylinder detection device based on infrared thermal imaging in the embodiment of the present invention, please refer to the details disclosed in the above-mentioned Type III hydrogen storage cylinder detection method based on infrared thermal imaging, and the specific details will not be described here.

[0051] According to the infrared thermal imaging-based type III hydrogen storage cylinder detection device of the embodiment of the present invention, the inner liner of the type III hydrogen storage cylinder placed in the heating chamber is scanned by the first acquisition module using an infrared thermal imaging device, and the current temperature distribution of the inner liner is recorded to obtain a first thermal image, and the first thermal image is converted into a first digital image by the second acquisition module, and the brightness value of each minimum image unit in the first digital image is obtained, and the damage detection module performs damage detection on the inner liner according to the brightness value of each minimum image unit in the first digital image. Therefore, the use of infrared thermal imaging technology to detect type III hydrogen storage cylinders is not only highly efficient, but also does not require contact with the type III hydrogen storage cylinders, and can effectively avoid damage to the internal materials of the type III hydrogen storage cylinders.

[0052] Corresponding to the above embodiment, the present invention also provides a computer device.

[0053] The computer device of the embodiment of the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the type III hydrogen storage cylinder detection method based on infrared thermal imaging of the above embodiment is implemented.

[0054] According to the computer equipment of the embodiment of the present invention, infrared thermal imaging technology is used to detect Type III hydrogen storage cylinders, which is not only highly efficient but also does not require contact with the Type III hydrogen storage cylinders, and can effectively avoid damage to the internal materials of the Type III hydrogen storage cylinders.

[0055] Corresponding to the above embodiment, the present invention also proposes a non-transitory computer-readable storage medium.

[0056] The non-transitory computer-readable storage medium of an embodiment of the present invention stores a computer program, which, when executed by a processor, implements the above-mentioned type III hydrogen storage cylinder detection method based on infrared thermal imaging.

[0057] According to the non-temporary computer-readable storage medium of an embodiment of the present invention, infrared thermal imaging technology is used to inspect Type III hydrogen storage cylinders, which is not only highly efficient but also does not require contact with the Type III hydrogen storage cylinders, and can effectively avoid damage to the internal materials of the Type III hydrogen storage cylinders.

[0058] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0062] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0063] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for detecting type III hydrogen storage cylinders based on infrared thermal imaging, characterized in that: The following steps are involved: S1, using infrared thermal imaging equipment to scan the inner liner of the type III hydrogen storage cylinder placed in the heating chamber, and record the current temperature distribution of the inner liner to obtain a first thermal image; S2, converting the first thermal image into a first digital image, and obtaining the brightness value of each minimum image unit in the first digital image; S3: Perform damage detection on the inner liner according to the brightness value of each minimum image unit in the first digital image.

2. The method for detecting type III hydrogen storage cylinders based on infrared thermal imaging according to claim 1, characterized in that: Step S3 specifically includes the following steps: S31, calculating a brightness division value according to the maximum brightness value and the minimum brightness value of each minimum image unit in the first digital image, and obtaining each high brightness minimum image unit according to the brightness division value; S32, calculating the degree of belonging of the corresponding high-brightness minimum image unit to the abnormal minimum image unit according to the image information amount within the first preset range of each high-brightness minimum image unit and the number of high-brightness minimum image units that appear, and marking the high-brightness minimum image unit whose degree of belonging is greater than or equal to the preset degree of belonging as the abnormal minimum image unit; S33, clustering the abnormal minimum image units to obtain multiple minimum image unit sets, calculating the confidence value of the corresponding minimum image unit set belonging to the suspected damage range according to the attribution degree and density of each abnormal minimum image unit in each minimum image unit set, and marking the minimum image unit set with the confidence greater than or equal to the preset confidence as the suspected damage range; S34, confirming whether the inner tank is damaged according to the suspected damage range.

3. The method for detecting type III hydrogen storage cylinders based on infrared thermal imaging according to claim 2 is characterized in that: The degree of attribution of the high brightness minimum image unit to the abnormal minimum image unit is calculated by the following formula: ， in, and are respectively the belonging degree corresponding to the kth high brightness minimum image unit and the side length of the first preset range, and are respectively the brightness value of the uth minimum image unit in the first preset range corresponding to the kth high brightness minimum image unit and the probability of the brightness value of the uth minimum image unit appearing in the first preset range, is the total number of high-brightness minimum image units within the first preset range.

4. The method for detecting type III hydrogen storage cylinders based on infrared thermal imaging according to claim 3 is characterized in that: The confidence value that the minimum image unit set belongs to the suspected damage range is calculated by the following formula: ， in, is the confidence value that the jth minimum image unit set belongs to the suspected damage range, is the variance of the degree of belonging of the abnormal minimum image unit in the jth minimum image unit set, is the density of the abnormal minimum image unit in the jth minimum image unit set.

5. The method for detecting type III hydrogen storage cylinders based on infrared thermal imaging according to claim 2, characterized in that: An average value of the maximum brightness value and the minimum brightness value is calculated to obtain the brightness division value.

6. A type III hydrogen storage cylinder detection device based on infrared thermal imaging, characterized in that: include: A first acquisition module, the first acquisition module is used to use an infrared thermal imaging device to scan the inner liner of the type III hydrogen storage cylinder placed in the heating chamber, and record the current temperature distribution of the inner liner to obtain a first thermal image; A second acquisition module, the second acquisition module is used to convert the first thermal image into a first digital image, and obtain the brightness value of each minimum image unit in the first digital image; A damage detection module, wherein the damage detection module is used to detect damage to the inner liner according to the brightness value of each minimum image unit in the first digital image.

7. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method for detecting type III hydrogen storage cylinders based on infrared thermal imaging according to any one of claims 1 to 5 is implemented.

8. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, a method for detecting type III hydrogen storage cylinders based on infrared thermal imaging according to any one of claims 1 to 5 is implemented.

Images