A roller inspection device and method

Abstract

The application discloses a roller inspection device and method, the device comprises: an image acquisition module, a sensing module and a controller, a positioning label is pasted on the starting position of the change of the distance between rollers in the pipe belt machine in advance, in the process of uniform speed running of the roller inspection device, when the controller determines that the sensing module senses the current positioning label at the current time, the current roller distance recorded by the current positioning label is acquired, the adjacent roller interval time is obtained based on the current roller distance and the uniform speed running speed of the roller inspection device, the target roller image collected by the image acquisition module is acquired when the adjacent roller interval time is reached from the current time, the target inspection area located in the preset reference inspection range is determined from the target roller image, and roller abnormality detection is carried out. The target inspection area adopted when the roller is inspected is the best image of the roller located at the center position of the roller image, therefore, the data processing amount is reduced, and the roller inspection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe belt machine inspection, and more particularly to a roller inspection device and method. BACKGROUND

[0002] At present, most of the faults in the conveyor inspection robot are caused by the rollers in the pipe belt machine, so whether the rollers are damaged directly affects the normal operation of the conveyor inspection robot.

[0003] In the existing abnormal roller inspection method, both manual inspection and robot inspection methods are: using a damaged template library comparison mode, that is, extracting features from the collected roller image data and video data, comparing the extracted features with the damaged template to determine whether the roller is abnormal.

[0004] Because the data volume of the existing roller image data and roller video data collected by the prior art is huge, the process of comparing the extracted features requires a large amount of computation, so the existing inspection method is low in efficiency and cannot realize rapid inspection of the rollers. SUMMARY

[0005] Therefore, the present application discloses a roller inspection device and method to improve the roller inspection efficiency and realize rapid inspection of the rollers.

[0006] A roller inspection device, comprising: an image acquisition module, a sensing module and a controller;

[0007] The installation position of the image acquisition module in the roller inspection device is consistent with the relative height and orientation of the pipe belt machine, so that the rollers in the collected roller image are located at the center position of the entire image, wherein the inspection track on which the roller inspection device runs is installed parallel to the pipe belt machine;

[0008] The sensing module is used to sense the positioning label pasted on the pipe belt machine during uniform motion of the roller inspection device, wherein the positioning label is pasted at the starting position where the roller spacing in the pipe belt machine changes, and the distance between the pasting position of each positioning label and the nearest roller in front is a preset distance, and the positioning label records the roller spacing between the nearest roller and the adjacent roller to the positioning label;

[0009] A controller is connected with the image acquisition module and the induction module respectively, and is configured to: acquire a current carrier roller interval recorded in a current positioning tag when it is determined that the induction module senses the current positioning tag at a current time during uniform running of the carrier roller inspection device; obtain an adjacent carrier roller interval time based on the current carrier roller interval and a uniform running speed of the carrier roller inspection device; acquire a target carrier roller image acquired by the image acquisition module when the adjacent carrier roller interval time is reached from the current time; determine a target inspection area located in a preset reference inspection range from the target carrier roller image; and detect whether a carrier roller in the target inspection area is abnormal; wherein the preset reference inspection range is a carrier roller shape position drawn by a polygon when the carrier roller is located at a carrier roller image center position.

[0010] Optionally, the image acquisition module comprises a camera.

[0011] The installation height and camera angle of the camera in the carrier roller inspection device can enable the carrier roller in the acquired carrier roller image to be located at a whole image center position.

[0012] Optionally, the image acquisition module comprises a thermal imager.

[0013] The installation height and thermal imaging angle of the thermal imager in the carrier roller inspection device can enable the carrier roller in the acquired carrier roller image to be located at a whole image center position, wherein the carrier roller image acquired by the thermal imager is a carrier roller thermal imaging image.

[0014] A carrier roller inspection method applied to the controller in the carrier roller inspection device, and the carrier roller inspection method comprises the following steps.

[0015] Acquiring a current carrier roller interval recorded in a current positioning tag when it is determined that the induction module senses the current positioning tag at a current time during uniform running of the carrier roller inspection device.

[0016] Obtaining an adjacent carrier roller interval time based on the current carrier roller interval and a uniform running speed of the carrier roller inspection device.

[0017] Acquiring a target carrier roller image acquired by the image acquisition module when the adjacent carrier roller interval time is reached from the current time.

[0018] Determining a target inspection area located in a preset reference inspection range from the target carrier roller image, wherein the preset reference inspection range is a carrier roller shape position drawn by a polygon when the carrier roller is located at a carrier roller image center position.

[0019] Detecting whether a carrier roller in the target inspection area is abnormal.

[0020] Optionally, when the current positioning label is the first positioning label in the uniform motion process of the roller inspection device, the method further comprises:

[0021] When it is determined that the inductive module induces the first positioning label, a first roller image collected by the image acquisition module at the moment when the roller inspection device passes the first positioning label is acquired;

[0022] A check area located in the preset reference inspection range is determined from the first roller image;

[0023] Whether the roller in the check area is abnormal is detected.

[0024] Optionally, the image acquisition module comprises a camera.

[0025] The detection of whether the roller in the target check area is abnormal comprises:

[0026] Color difference values of adjacent pixels in the target check area are calculated;

[0027] Whether a target color difference value exceeding a preset deviation value exists in each color difference value is determined;

[0028] If yes, it is determined that the roller corresponding to the current positioning label is abnormal;

[0029] If no, it is determined that the roller corresponding to the current positioning label is normal.

[0030] Optionally, the image acquisition module comprises a thermal imager.

[0031] The detection of whether the roller in the target check area is abnormal comprises:

[0032] A highest temperature in a thermal image of the roller corresponding to the target check area is acquired;

[0033] Whether the highest temperature exceeds a preset high temperature value is determined;

[0034] If yes, it is determined that the roller corresponding to the current positioning label is abnormal;

[0035] If no, it is determined that the roller corresponding to the current positioning label is normal.

[0036] Optionally, the method further comprises:

[0037] When it is determined that the roller corresponding to the target check area is abnormal, inspection abnormal data and the target roller image are uploaded to a central server, wherein the inspection abnormal data comprises a pasting position of the current positioning label.

[0038] From the above technical solutions can be known, the application discloses a kind of roller inspection device and method, device includes: image acquisition module, sensing module and controller, pre-adhere on the starting position of the distance change of roller in pipe belt machine, the position of the starting position of the distance change of roller in pipe belt machine is pasted with positioning label, the roller distance of the nearest roller with adjacent roller recorded in this positioning label is pasted with positioning label, in the uniform speed running process of roller inspection device, when determining that sensing module senses current positioning label at current time, current roller distance recorded in current positioning label is obtained, based on current roller distance and the uniform speed running speed of roller inspection device, adjacent roller interval time is obtained, from current time, when reaching adjacent roller interval time, the target roller image that image acquisition module collects is obtained, from target roller image, determine the target inspection area located in preset reference inspection range and carry out roller abnormality detection, and preset reference inspection range is the roller shape position that is drawn using polygon when roller is located in roller image center position.The application is obtained once in the uniform speed running process of roller inspection device, and the target inspection area in each roller image in preset reference inspection range is regarded as the final image for checking whether roller is abnormal, so, the image when checking roller in the application is the best image of the roller located in the roller image center position, not only data processing amount is greatly reduced, and the roller inspection efficiency is improved, and the rapid inspection of roller can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only the embodiments of the present application, and for those skilled in the art, without creative labor, other drawings can also be obtained according to the disclosed drawings.

[0040] Figure 1 The structural diagram of a roller inspection device disclosed by the embodiment of the present application is shown in the figure.

[0041] Figure 2 The structural diagram of another roller inspection device disclosed by the embodiment of the present application is shown in the figure.

[0042] Figure 3 The flow chart of a roller inspection method disclosed by the embodiment of the present application is shown in the figure.

[0043] Figure 4 The flow chart of a method for detecting whether the roller in the target inspection area is abnormal disclosed by the embodiment of the present application is shown in the figure.

[0044] Figure 5 The flow chart of another method for detecting whether the roller in the target inspection area is abnormal disclosed by the embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0046] The embodiment of the present application discloses a kind of roller inspection device and method, device includes: image acquisition module, sensing module and controller, pre-roller spacing change in pipe belt machine between the starting position of roller is pasted on positioning label, the roller spacing of the nearest roller and adjacent roller recorded in this positioning label is pasted on positioning label, in the uniform speed running process of roller inspection device, when determining that sensing module senses current positioning label at current time, current roller spacing recorded in current positioning label is obtained, based on current roller spacing and the uniform speed running speed of roller inspection device, adjacent roller interval time is obtained, from current time, when reaching adjacent roller interval time, the target roller image that image acquisition module collects is obtained, target inspection area located in preset reference inspection range is determined from target roller image and carries out roller anomaly detection, preset reference inspection range is the roller shape position that polygon is drawn when roller is located in roller image center position.This application is obtained once in the uniform speed running process of roller inspection device, and the target inspection area of each roller image in preset reference inspection range is regarded as the final image of whether the check roller is abnormal, therefore, the image when the roller is checked in the present application is the best image of the roller located in the roller image center position, not only data processing amount is greatly reduced, and the roller inspection efficiency is improved, and the rapid inspection of roller can be realized.

[0047] Referring to Figure 1 The embodiment of the present application discloses a kind of roller inspection device structural diagram, the device includes: image acquisition module 11, sensing module 12 and controller 13.

[0048] Wherein, the installation position of image acquisition module 11 in roller inspection device is consistent with the relative height and orientation of pipe belt machine, so that the roller in the collected roller image is located in the center position of the whole image.

[0049] It should be noted that the inspection track where the roller inspection device runs is parallelly installed with pipe belt machine.

[0050] In practical application, the inspection track is installed in parallel with the pipe belt machine, the roller inspection device moves uniformly on the inspection track, and the image acquisition module 11 on the roller inspection device keeps consistent with the relative height and position of the pipe belt machine.

[0051] The induction module 12 is used to induce the positioning label pasted on the pipe belt machine during the uniform movement of the roller inspection device.

[0052] In practical application, the pipe belt machine is not a straight line, and there are corners, so the distance between adjacent rollers may change. The present application pastes a positioning label at the starting position of the change of the distance between rollers in the pipe belt machine, the distance between the pasting position of each positioning label and the nearest roller in front is the preset distance L0, and the positioning label records the distance between the nearest roller and the adjacent roller. Of course, the positioning label can also record other information, such as the position number of the pipe belt machine, etc., which is determined according to actual needs, and the present application does not limit it.

[0053] During the uniform movement of the roller inspection device on the inspection track, when the running position reaches the pasting position of the positioning label, the induction module 12 can induce the positioning label.

[0054] The controller 13 is connected with the image acquisition module 11 and the induction module 12, respectively, and is used to obtain the current roller distance recorded in the current positioning label when it is determined that the induction module 12 induces the current positioning label at the current time during the uniform movement of the roller inspection device, obtain the adjacent roller interval time based on the current roller distance and the uniform movement speed of the roller inspection device, obtain the target roller image collected by the image acquisition module 11 when the adjacent roller interval time is reached from the current time, determine the target inspection area in the preset reference inspection range from the target roller image, and detect whether the roller in the target inspection area is abnormal.

[0055] The preset reference inspection range is the roller shape position drawn by a polygon when the roller is located at the center position of the roller image.

[0056] Specifically, if the induction module 12 senses the current positioning label at the current time during the uniform running of the roller inspection device, the controller 13 obtains the current roller spacing recorded in the current positioning label, since the roller inspection device is running at a uniform speed and the uniform running speed is known, therefore, by dividing the current roller spacing by the uniform running speed of the roller inspection device, the adjacent roller interval time t0 required for the roller inspection device to run from the current roller position to the adjacent roller position can be obtained. Starting from the current time when the induction module 12 senses the current positioning label, when the adjacent roller interval time t0 is reached, the target roller image collected by the image collection module 11 at this time is obtained, and the target inspection area located in the preset reference inspection range in the target roller image is determined, and the preset reference inspection range is the roller shape position drawn by the polygon when the roller is located at the center position of the roller image. The present application determines the target inspection area located in the preset reference inspection range in the target roller image to ensure that the target inspection area is the best image when the roller is located at the center position of the roller image, thereby facilitating subsequent detection of whether the roller is abnormal.

[0057] The roller abnormalities include roller wear abnormalities and roller damage.

[0058] In summary, the present application discloses a roller inspection device, which comprises an image collection module 11, an induction module 12 and a controller 13, a positioning label is pasted at the starting position of the change of the roller spacing in the pipe belt machine, and the positioning label records the roller spacing between the nearest roller and the adjacent roller to the positioning label. During the uniform running of the roller inspection device, when the induction module 12 senses the current positioning label at the current time, the controller 13 obtains the current roller spacing recorded in the current positioning label, and based on the current roller spacing and the uniform running speed of the roller inspection device, the adjacent roller interval time is obtained. Starting from the current time, when the adjacent roller interval time is reached, the target roller image collected by the image collection module 11 is obtained, and the target inspection area located in the preset reference inspection range in the target roller image is determined and the roller abnormality detection is performed, and the preset reference inspection range is the roller shape position drawn by the polygon when the roller is located at the center position of the roller image. In the present application, the roller image is obtained once every adjacent roller interval time during the uniform running of the roller inspection device, and the target inspection area of each roller image located in the preset reference inspection range is used as the final image for checking whether the roller is abnormal, therefore, the images during the inspection of the roller in the present application are all the best images when the roller is located at the center position of the roller image, which not only greatly reduces the data processing amount and improves the roller inspection efficiency, but also realizes the rapid inspection of the roller.

[0059] To further optimize the above embodiment, refer to Figure 2 The structure of another roller inspection device disclosed in the embodiment of the present application is shown in the figure, inFigure 1 The image acquisition module 11 of the embodiment shown comprises a camera 111.

[0060] The installation height and the camera angle of the camera 111 in the carrier roller inspection device can make the carrier roller in the carrier roller image acquired by the camera 111 be located at the center position of the whole image.

[0061] In actual application, before the camera 111 in the carrier roller inspection device is used, the camera needs to be focused and the installation height and the camera angle of the camera 111 need to be adjusted so that the carrier roller in the carrier roller image acquired by the camera 111 is located at the center position of the image.

[0062] To further optimize the above embodiment, the image acquisition module 11 can further comprise a thermal imager 112.

[0063] The installation height and the thermal imaging angle of the thermal imager 112 in the carrier roller inspection device can make the carrier roller in the carrier roller image acquired by the thermal imager 112 be located at the center position of the whole image, wherein the carrier roller image acquired by the thermal imager 112 is a carrier roller thermal imaging image.

[0064] In actual application, before the thermal imager 112 in the carrier roller inspection device is used, the installation height and the thermal imaging angle of the thermal imager 112 in the carrier roller inspection device need to be adjusted so that the carrier roller in the carrier roller thermal imaging image acquired by the thermal imager 112 is located at the center position of the whole image.

[0065] Corresponding to the above device embodiment, the application further discloses a carrier roller inspection method.

[0066] Referring to Figure 3 The carrier roller inspection method disclosed by the embodiment of the application is applied to a controller in a carrier roller inspection device, and the method comprises the following steps.

[0067] In step S101, during uniform-speed running of the carrier roller inspection device, when it is determined that the sensing module senses a current positioning label at a current time, a current carrier roller interval recorded in the current positioning label is acquired.

[0068] During uniform-speed running of the carrier roller inspection device on an inspection track, when the carrier roller inspection device runs to a pasting position of a positioning label, the sensing module senses the positioning label. If the sensing module senses a current positioning label at a current time, the controller acquires a current carrier roller interval recorded in the current positioning label.

[0069] In step S102, based on the current carrier roller interval and the uniform-speed running speed of the carrier roller inspection device, an interval time of adjacent carrier rollers is obtained.

[0070] Since the roller inspection device is running at a constant speed and the constant speed is known, by dividing the current roller interval by the constant speed of the roller inspection device, the adjacent roller interval time t0 required for the roller inspection device to run from the current roller position to the adjacent roller position can be obtained.

[0071] Step S103, starting from the current time, when the adjacent roller interval time is reached, the target roller image collected by the image collection module is obtained.

[0072] The embodiment starts from the current time when the current positioning tag is sensed by the sensing module, and when the adjacent roller interval time is reached, the target roller image collected by the image collection module at this time is obtained.

[0073] Step S104, determining the target inspection area located in the preset reference inspection range from the target roller image.

[0074] The preset reference inspection range is the position of the roller shape drawn by the polygon when the roller is located at the center position of the roller image.

[0075] The application determines the target inspection area located in the preset reference inspection range in the target roller image, so as to ensure that the target inspection area is the best image when the roller is located at the center position of the roller image, thereby facilitating the subsequent detection of whether the roller is abnormal.

[0076] Step S105, detecting whether the roller in the target inspection area is abnormal.

[0077] The roller abnormality may be, for example, roller wear abnormality, roller damage, etc.

[0078] To sum up, the present application pastes a positioning label at the starting position of the change of the distance between the rollers in the pipe belt machine, and the distance between the rollers of the nearest roller and the adjacent roller to the positioning label is recorded in the positioning label. During the uniform running process of the roller inspection device, when the inductive module senses the current positioning label at the current time, the controller obtains the current roller distance recorded in the current positioning label. Based on the current roller distance and the uniform running speed of the roller inspection device, the adjacent roller interval time is obtained. From the current time, when the adjacent roller interval time is reached, the target roller image collected by the image collection module is obtained, and the target inspection area located in the preset reference inspection range in the target roller image is determined and the roller abnormality is detected. The preset reference inspection range is the roller shape position drawn by the polygon when the roller is located at the center position of the roller image. In the uniform running process of the roller inspection device, the roller image is obtained once every adjacent roller interval time, and the target inspection area of each roller image located in the preset reference inspection range is used as the final image for checking whether the roller is abnormal. Therefore, the image of the roller in the process of checking the roller is the best image of the roller located at the center position of the roller image. The data processing amount is greatly reduced, the roller inspection efficiency is improved, and the rapid inspection of the roller can be realized.

[0079] It should be noted that when the current positioning label is the first positioning label in the uniform running process of the roller inspection device, the roller inspection method can further include:

[0080] When it is determined that the inductive module senses the first positioning label, a first roller image collected by the image collection module at the time when the roller inspection device passes the first positioning label is obtained.

[0081] The inspection area located in the preset reference inspection range is determined from the first roller image.

[0082] Whether the roller in the inspection area is abnormal is detected.

[0083] In the embodiment, when the inductive module senses the first positioning label passed by the roller inspection device during the uniform running process of the roller inspection device, the controller obtains the first roller image collected by the image collection module at the time when the inductive module senses the first positioning label, and determines the inspection area located in the preset reference inspection range from the first roller image. The inspection area is also the best image of the roller located at the center position of the roller image, thereby facilitating the subsequent detection of whether the roller is abnormal.

[0084] When the image collection module includes a camera, referring to Figure 3 The method disclosed in the embodiment of the present application includes:

[0085] Step S201, calculate the color difference between adjacent pixels in the target inspection area;

[0086] The target inspection area is an area in the target roller image collected by the camera and located in the preset reference inspection range. Since the preset reference inspection range is the position of the roller shape drawn by the polygon when the roller is located at the center position of the roller image, the target inspection area is the best image when the roller is located at the center position of the roller image.

[0087] The target inspection area contains many adjacent pixels, and the color difference between each adjacent pixel is calculated in this embodiment.

[0088] Step S202, determine whether there is a target color difference value that exceeds the preset deviation value in each color difference value, if yes, execute step S203, if no, execute step S204;

[0089] The value of the preset deviation value is determined according to actual needs, which is not limited in the present application.

[0090] Step S203, determine that the roller corresponding to the current positioning label is abnormal;

[0091] The roller abnormality includes roller wear abnormality, roller damage, etc.

[0092] Step S204, determine that the roller corresponding to the current positioning label is normal.

[0093] In this embodiment, whether there is a target color difference value that exceeds the preset deviation value in the color difference between adjacent pixels in the target inspection area (i.e. the best image when the roller is located at the center position of the roller image) is determined to determine whether the roller is abnormal, so that effective measures can be taken when the roller is determined to be abnormal.

[0094] When the image acquisition module includes a thermal imager, referring to Figure 4 Another embodiment of the present application discloses a method flow chart for detecting whether the roller in the target inspection area is abnormal, which comprises:

[0095] Step S301, obtain the highest temperature in the roller thermal image corresponding to the target inspection area;

[0096] The target inspection area is an area in the target roller image collected by the camera and located in the preset reference inspection range. Since the preset reference inspection range is the position of the roller shape drawn by the polygon when the roller is located at the center position of the roller image, the target inspection area is the best image when the roller is located at the center position of the roller image.

[0097] Step S302, judging whether the highest temperature exceeds the preset high temperature value, if yes, executing step S303, if no, executing step S304;

[0098] The preset high temperature value is determined according to actual needs, which is not limited in the present application.

[0099] Step S303, determining that the current positioning label corresponds to an abnormal roller;

[0100] Step S304, determining that the current positioning label corresponds to a normal roller.

[0101] The present embodiment determines whether the roller is abnormal by judging whether the highest temperature in the thermal imaging image of the roller corresponding to the target inspection area exceeds the preset high temperature value, so that effective measures are taken when the roller is determined to be abnormal.

[0102] It should be particularly noted that in actual application, the image acquisition module can include any one or both of a camera and a thermal imager, and when the image acquisition module includes both the camera and the thermal imager, the implementation process of step S105 simultaneously includes the embodiments shown in Figure 3 and Figure 4 .

[0103] To further optimize the above-mentioned embodiments, the roller inspection method can further include:

[0104] When it is determined that the roller corresponding to the target inspection area is abnormal, the inspection abnormal data and the target roller image are uploaded to the central server, wherein the inspection abnormal data includes the pasting position of the current positioning label.

[0105] The present embodiment determines that the roller corresponding to the target inspection area is abnormal, and uploads the inspection abnormal data and the target roller image to the central server, which facilitates the technician to take effective measures on the roller.

[0106] Finally, it should be noted that in this document, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying that these entities or actions are in any way mutually exclusive or in any way in a strict order, unless otherwise specified or required by the context. In addition, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed or inherent to such a process, method, article or apparatus. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus including the element.

[0107] The various embodiments described in this specification are intended to be illustrative only and in no way limit the scope of the application. Changes and modifications can be made by those skilled in the art, which employ the principles of the application, without departing from the scope of the application. Accordingly, the application is not limited to the embodiments described herein, but instead has scope to encompass any choice whatsoever that is dependent on, or can be substituted in, the principal, new and inventive features that are described and claimed herein.

[0108] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Numerous modifications to these embodiments can be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A roller inspection device, characterized by, The application relates to a roller inspection device and a roller inspection method. The image acquisition module is installed at a position consistent with the relative height and orientation of a pipe belt machine in a roller inspection device, so that the rollers in the acquired roller image are located at the center of the whole image, wherein the inspection track of the roller inspection device is parallel to the pipe belt machine when the roller inspection device is running. The sensing module senses a positioning label pasted on the pipe belt machine when the roller inspection device is running at a constant speed, wherein the positioning label is pasted at a starting position where the distance between rollers changes on the pipe belt machine, the distance between the pasted position of each positioning label and the nearest roller in front is a preset distance, and the positioning label records the distance between the nearest roller and the adjacent roller. The controller is connected with the image acquisition module and the sensing module, respectively, and is used for acquiring the current roller distance recorded in the current positioning label when it is determined that the sensing module senses the current positioning label at the current time during the constant-speed running of the roller inspection device, obtaining the adjacent roller interval time based on the current roller distance and the constant-speed running speed of the roller inspection device, acquiring the target roller image acquired by the image acquisition module when the adjacent roller interval time is reached from the current time, determining the target inspection area in the preset reference inspection range from the target roller image, and detecting whether the roller in the target inspection area is abnormal, wherein the target inspection area is the best image in the target roller image in which the roller is located at the center of the roller image. The image acquisition module comprises a camera.

2. The idler roller inspection apparatus of claim 1, wherein The installation height and camera angle of the camera in the roller inspection device can make the rollers in the acquired roller image located at the center of the whole image. The image acquisition module comprises a thermal imager.

3. The roller inspection apparatus according to claim 1 or 2, characterized by The installation height and thermal imaging angle of the thermal imager in the roller inspection device can make the rollers in the acquired roller image located at the center of the whole image, wherein the roller image acquired by the thermal imager is a roller thermal imaging image. The controller applied to the roller inspection device in any one of claims 1-3, the roller inspection method comprises:

4. A method of inspecting a roller, characterized by, acquiring the current roller distance recorded in the current positioning label when it is determined that the sensing module senses the current positioning label at the current time during the constant-speed running of the roller inspection device; obtaining the adjacent roller interval time based on the current roller distance and the constant-speed running speed of the roller inspection device; ​ From the current moment, when the adjacent roller interval time is reached, a target roller image collected by an image collection module is acquired; A target inspection area located in a preset reference inspection range is determined from the target roller image, wherein the preset reference inspection range is a roller shape position drawn by a polygon when the roller is located at a center position of the roller image; It is detected whether the roller in the target inspection area is abnormal, and the target inspection area is an optimal image in which the roller is located at the center position of the roller image in the target roller image; When it is determined that the current positioning label of the sensing module is the first positioning label in a uniform speed running process of the roller inspection device, a first roller image collected by the image collection module at a moment when the roller inspection device passes the first positioning label is acquired; an inspection area located in the preset reference inspection range is determined from the first roller image; and it is detected whether the roller in the inspection area is abnormal.

5. The idler inspection method of claim 4, wherein When the image collection module comprises a camera; It is detected whether the roller in the target inspection area is abnormal, comprising: Color difference values of adjacent pixels in the target inspection area are calculated; It is judged whether a target color difference value exceeding a preset deviation value exists in each color difference value; If yes, it is determined that the roller corresponding to the current positioning label is abnormal; If no, it is determined that the roller corresponding to the current positioning label is normal.

6. The idler inspection method of claim 4, wherein When the image collection module comprises a thermal imager; It is detected whether the roller in the target inspection area is abnormal, comprising: A highest temperature in a thermal imaging image of the roller corresponding to the target inspection area is acquired; It is judged whether the highest temperature exceeds a preset high temperature value; If yes, it is determined that the roller corresponding to the current positioning label is abnormal; If no, it is determined that the roller corresponding to the current positioning label is normal.

7. The idler inspection method of claim 4, wherein Further comprising: When it is determined that the roller corresponding to the target inspection area is abnormal, inspection abnormal data and the target roller image are uploaded to a central server, wherein the inspection abnormal data comprises a pasting position of the current positioning label.

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