Method and system for detecting damage of conveyor belt

Abstract

The invention relates to the technical field of conveyor belt detection, and particularly discloses a conveyor belt damage detection method and system, and the method comprises the following steps: obtaining a tension value and a tension rated value of a conveyor belt through the measurement of a tension sensor; the tensioning variation rate of the conveyor belt is obtained through calculation, and a conveyor belt tensioning stable signal is obtained; the high-speed camera carries out picture shooting by keeping the shooting interval time length value; counting the number value of cracks in each shot picture; calculating to obtain a crack performance value of the conveyor belt, and obtaining a surface stable signal; calculating to obtain a point position deviation difference value of the conveyor belt, and obtaining a conveyor belt pair aligning signal; the maximum deviation angle value of the conveyor belt is obtained through calculation, a stable signal of the conveyor belt is obtained, the stability of the conveyor belt in the operation process is better guaranteed, meanwhile, an accurate calculation basis is provided for stable operation of the conveyor belt, and the situation that the conveyor belt is broken or falls off in the operation process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of conveyor belt detection, and in particular to a method and system for detecting conveyor belt damage. Background Art

[0002] In order to reduce the impact of conveyor belt damage, in the related technology, manual inspection is used to check whether the conveyor belt is damaged, that is, a special position is set up to check the conveyor belt in real time and manually determine whether the conveyor belt is damaged.

[0003] In the process of implementing relevant technologies, due to the low accuracy of manual inspection, damage to the conveyor belt can only be detected when the conveyor belt is severely damaged, but slight damage or abnormality of the conveyor belt cannot be detected. It is impossible to predict in advance when the conveyor belt has abnormalities, which can easily lead to abnormal operation. At the same time, manual observation and other methods cannot perform accurate inspections from multiple aspects, that is, the conveyor belt has a single inspection purpose during the inspection process and cannot comprehensively judge abnormalities. The inspection has poor accuracy and cannot be comprehensively and objectively performed. Summary of the invention

[0004] The object of the present invention is to provide a method and system for detecting conveyor belt damage to solve the above-mentioned background problems.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A method for detecting conveyor belt damage comprises the following steps:

[0007] The tension value of the conveyor belt is measured by the tension sensor and marked as ZN. At the same time, the rated tension value ZED of the conveyor belt for stable operation is obtained; the tension variation rate ZB of the conveyor belt is calculated; and compared with the tension variation threshold value ZY of the conveyor belt operation; and the conveyor belt tension stability signal is obtained;

[0008] Based on the conveyor belt tension stability signal, the high-speed camera maintains the shooting interval time value TSD to shoot pictures; and each shot picture is marked as w, where w is 1, 2, 3...WSD; then edge detection and recognition are performed on each shot picture, and the number of cracks in each shot picture is counted and marked as HL W ;

[0009] Based on the crack quantity value set in the WSD photos, the crack performance value BHLH of the conveyor belt is calculated and compared with the crack performance threshold LHY to obtain the surface stability signal;

[0010] Based on the surface stability signal, the conveying length value ZL of the conveyor belt is obtained, and the measuring points of the conveyor belt are marked with a unit length k as the distance interval, and each measuring point is marked as i, where i is 1, 2, 3...; the upper horizontal distance value of the upper surface side of the conveyor belt at each measuring point from the measuring point during the operation of the conveyor belt is obtained by measuring with a laser rangefinder, which is recorded as JZSF i ; Then obtain the lower horizontal distance value of the lower surface side of the conveyor belt from the measuring point at each measuring point, recorded as JZXB i ; Calculate the conveyor belt point deviation difference JZP i , further obtain the conveyor belt alignment signal;

[0011] Based on the transmission belt leveling signal, the maximum deviation angle value CT of the conveyor belt is calculated and compared with the conveyor belt deviation angle threshold CTy to obtain the conveyor belt stability signal.

[0012] As a further solution of the present invention: calculating and obtaining the tension variation rate ZB of the conveyor belt;

[0013] Compare the tension variation rate ZB of the conveyor belt with the tension variation threshold ZY of the conveyor belt operation;

[0014] If the tension variation rate ZB of the conveyor belt is less than or equal to the tension variation threshold ZY, a conveyor belt tension stability signal is generated;

[0015] If the conveyor belt tension variation rate ZB is greater than the tension variation threshold ZY, a conveyor belt tension abnormality signal is generated.

[0016] Furthermore, the shooting interval duration value TSD is calculated as follows:

[0017] The running speed value of the conveyor belt is obtained, recorded as VSD, and at the same time, the length value LSD of the picture taken by the high-speed camera is obtained; the shooting interval time value of the high-speed camera is calculated and obtained.

[0018] Furthermore, the WSD is a value of the number of pictures taken by a high-speed camera.

[0019] Furthermore, the calculation method of the crack performance value BHLH of the conveyor belt is:

[0020] Get the crack number value set in WSD photos, get the maximum crack number, recorded as HLmax; calculate the crack variation value LLH of each photo and the adjacent photos W ;

[0021] The standard deviation value C llh of the crack variation of the conveyor belt is calculated by the standard deviation formula;

[0022] Finally, the crack performance value BXLH of the conveyor belt is calculated.

[0023] Further, the crack manifestation value BHLH of the conveyor belt is compared with the crack manifestation threshold value LHY;

[0024] If the crack performance value BHLH of the conveyor belt is greater than the crack performance threshold LHY, a crack risk signal is generated;

[0025] If the crack manifestation value BHLH of the conveyor belt is equal to the crack manifestation threshold LHY, a surface stability signal is generated.

[0026] Further, the conveyor belt position deviation difference JZP is calculated and obtained i ;

[0027] Extract the maximum value of the conveyor belt point deviation difference, and record it as the point deviation difference extreme value JZPmax;

[0028] Compare the conveyor belt's point deviation difference extreme value JZPmax with the point deviation threshold value JZPY;

[0029] If the conveyor belt's point deviation difference extreme value JZPmax is less than or equal to the point deviation threshold value JZPY, a conveyor belt alignment signal is generated;

[0030] If the conveyor belt's point deviation difference extreme value JZPmax is greater than the point deviation threshold value JZPY, a conveyor belt out-of-position signal is generated.

[0031] Furthermore, the conveyor belt stabilization signal is obtained in the following manner:

[0032] Get the upper horizontal distance value JZSF of the upper surface side distance measurement point of the conveyor belt i The lower horizontal distance value JZXB from the measuring point of the lower surface side distance i ;

[0033] The mean side distance of the measuring point of the transmission belt is obtained by calculation JZJZ i ;

[0034] Get the maximum value of the mean side distance of the measuring point of the conveyor belt, record it as JZJZmax, and record the measuring point as e;

[0035] Then obtain the minimum mean value of the side distance of the measuring point, record it as JZJZmin, and record the measuring point as f;

[0036] The maximum deviation angle value CT of the conveyor belt is obtained by calculation;

[0037] Compare the maximum conveyor belt deviation angle value CT with the conveyor belt deviation angle threshold CTy;

[0038] If the maximum deviation angle value CT of the conveyor belt is less than the conveyor belt deviation angle threshold CTy, a conveyor belt stability signal is generated;

[0039] If the maximum deviation angle value C of the conveyor belt is greater than or equal to the transmission belt deviation angle threshold value CTy, a transmission belt displacement signal is generated.

[0040] As a further solution of the present invention: a detection system for conveyor belt damage, comprising:

[0041] Pre-check module: obtain the tension value of the conveyor belt through the tension sensor, and mark the tension value as ZN, and obtain the rated tension value ZED of the conveyor belt for stable operation; calculate the tension variation rate ZB of the conveyor belt; and compare it with the tension variation threshold ZY of the conveyor belt operation; obtain the tension stability signal of the conveyor belt;

[0042] Crack detection module: Based on the conveyor belt tension stability signal, the high-speed camera maintains the shooting interval time value TSD to take pictures; and each taken picture is marked as w, where w is 1, 2, 3...WSD; then edge detection and recognition are performed on each taken picture and the number of cracks in each taken picture is counted and marked as HL W ;

[0043] Based on the crack quantity value set in the WSD photos, the crack performance value BHLH of the conveyor belt is calculated and compared with the crack performance threshold LHY to obtain the surface stability signal;

[0044] Flush detection module: Based on the surface stability signal, the conveying length value ZL of the conveyor belt is obtained, and the measuring points of the conveyor belt are marked with a unit length k as the distance interval, and each measuring point is marked as i, where i is 1, 2, 3, etc.; the upper horizontal distance value of the upper surface side of the conveyor belt at each measuring point from the measuring point during the operation of the conveyor belt is measured by a laser rangefinder, which is recorded as JZSF i ; Then obtain the lower horizontal distance value of the lower surface side of the conveyor belt from the measuring point at each measuring point, recorded as JZXB i ; Calculate the conveyor belt point deviation difference JZP i , further obtain the conveyor belt alignment signal;

[0045] Deviation detection module: Based on the transmission belt leveling signal, the maximum deviation angle value CT of the conveyor belt is calculated and compared with the conveyor belt deviation angle threshold CTy to obtain the conveyor belt stability signal.

[0046] Beneficial effects of the present invention:

[0047] In the present invention, by detecting the tensioning force of the conveyor belt during operation, it is preliminarily determined whether the conveyor belt is loose, and then based on the crack detection on the surface of the conveyor belt, it can be effectively determined whether there is a risk of the conveyor belt breaking during operation. Then, the offset of the upper and lower layers of the conveyor belt is detected, and the offset angle of the conveyor belt is detected at the same time, so as to realize multi-faceted detection of the conveyor belt, better ensure the stability of the conveyor belt during operation, and at the same time, provide an accurate calculation basis for the stable operation of the conveyor belt to avoid the conveyor belt from breaking or falling off during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The present invention will be further described below in conjunction with the accompanying drawings.

[0049] Figure 1 It is a schematic flow chart of the method of the present invention;

[0050] Figure 2 It is a system block diagram of the present invention. DETAILED DESCRIPTION

[0051] 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.

[0052] Embodiment 1

[0053] See also Figure 1 As shown, the present invention is a method for detecting conveyor belt damage, comprising the following steps:

[0054] Step 1: Measure and obtain the tension value of the conveyor belt through the tension sensor, and mark the tension value as ZN, and obtain the rated tension value ZED of the conveyor belt for stable operation;

[0055] pass Calculate and obtain the tension variation rate ZB of the conveyor belt;

[0056] Compare the tension variation rate ZB of the conveyor belt with the tension variation threshold ZY of the conveyor belt operation;

[0057] If the tension variation rate ZB of the conveyor belt is less than or equal to the tension variation threshold ZY, a conveyor belt tension stability signal is generated; this indicates that the tension of the conveyor belt is in a stable state during operation and the conveyor belt is not loose;

[0058] If the tension variation rate ZB of the conveyor belt is greater than the tension variation threshold ZY, a conveyor belt tension abnormality signal is generated; at this time, it can be said that the conveyor belt is loose or slipping, and the conveyor belt tension force needs to be detected and adjusted to ensure the normal operation of the conveyor belt;

[0059] Step 2: Based on the conveyor belt tension stability signal, obtain the running speed value of the conveyor belt, recorded as VSD, and at the same time, obtain the length value LSD of the picture taken by the high-speed camera;

[0060] pass Calculate and obtain the shooting interval duration value TSD of the high-speed camera, so that the high-speed camera maintains the shooting interval duration value TSD to take pictures;

[0061] Based on the conveyor belt length value SSD, by Calculate and obtain the number of pictures taken by the high-speed camera, WSD; and mark each taken picture as w, where w is 1, 2, 3, ... WSD;

[0062] Preprocess each captured image, including denoising and contrast enhancement;

[0063] Then, edge detection is performed on each image and the number of cracks in each image is counted and marked as HL. W ;

[0064] Step 3: Obtain a set of crack number values ​​in WSD captured images, and obtain the maximum crack number, recorded as HLmax;

[0065] Then, through LLH w =|HL w -HL w-1 |+|HL w -HL w+1 | Calculate the crack variation value LLH of each image and the adjacent images W ;

[0066] It should be noted that, since the conveyor belt is annular, when the value of w is WSD, LLH WSD =|HL WSD -HL WSD-1 |+|HL WSD -HL1|, similarly, when the value of w is 1, LLH1=|HL1-HL WSD |+|HL1-HL2|;

[0067] Based on the crack mutation value LLH W , the standard deviation value Cl lh of the crack variation of the conveyor belt is calculated by the standard deviation formula;

[0068] Finally, the crack performance value BXLH of the conveyor belt is calculated by BXLH=a×HLmax+b×Cllh; where a is the crack extreme value coefficient, b is the crack variation coefficient, a>0, b>0, and a+b=1;

[0069] Compare the crack performance value BHLH of the conveyor belt with the crack performance threshold value LHY;

[0070] If the crack performance value BHLH of the conveyor belt is greater than the crack performance threshold LHY, a crack risk signal is generated; at this time, it means that there are many cracks on the surface of the conveyor belt and they are uneven, and it is easy to break, reminding the maintenance personnel to conduct inspection or replacement;

[0071] If the crack performance value BHLH of the conveyor belt is equal to the crack performance threshold LHY, a surface stability signal is generated;

[0072] Step 4: Based on the surface stability signal, obtain the conveying length value ZL of the conveyor belt, mark the measuring points of the conveyor belt with a unit length k as the distance interval, and mark each measuring point as i, where i is 1, 2, 3...; use a laser rangefinder to measure and obtain the upper horizontal distance value of the upper surface side of the conveyor belt at each measuring point from the measuring point during the operation of the conveyor belt, recorded as JZSF i ; At the same time, obtain the lower horizontal distance value of the lower surface side of the conveyor belt from the measuring point at each measuring point during operation, recorded as JZXB i ;

[0073] By JZP i =|JZSF i -JZXB i |Calculate and obtain the conveyor belt point deviation difference JZP i ;

[0074] Extract the maximum value of the conveyor belt point deviation difference, and record it as the point deviation difference extreme value JZPmax;

[0075] Compare the conveyor belt's point deviation difference extreme value JZPmax with the point deviation threshold value JZPY;

[0076] If the conveyor belt's point deviation difference extreme value JZPmax is less than or equal to the point deviation threshold value JZPY, a conveyor belt alignment signal is generated; this indicates that during the operation of the conveyor belt, there is no large deviation between the upper and lower layers of the conveyor belt, and the conveyor belt is in a relatively even state;

[0077] If the conveyor belt's point deviation difference extreme value JZPmax is greater than the point deviation threshold value JZPY, a conveyor belt misalignment signal is generated, indicating that the upper and lower layers of the conveyor belt are relatively offset, and the upper and lower belts need to be adjusted to align them.

[0078] Step 5: Based on the transmission belt leveling signal, obtain the upper horizontal distance value JZSF of the upper surface side distance measurement point of the conveyor belt i The lower horizontal distance value JZXB from the measuring point of the lower surface side distance i ;

[0079] pass Calculate the mean side distance JZJZ of the measuring point of the transmission belt i ;

[0080] Get the maximum value of the mean side distance of the measuring point of the conveyor belt, record it as JZJZmax, and record the measuring point as e;

[0081] Then obtain the minimum mean value of the side distance of the measuring point, record it as JZJZmin, and record the measuring point as f;

[0082] pass Calculate and obtain the maximum deviation angle value CT of the conveyor belt;

[0083] Compare the maximum conveyor belt deviation angle value CT with the conveyor belt deviation angle threshold CTy;

[0084] If the maximum deviation angle value CT of the conveyor belt is less than the conveyor belt deviation angle threshold CTy, a conveyor belt stability signal is generated; at this time, it means that the conveyor belt is in a relatively stable state during operation;

[0085] If the maximum deviation angle value C of the conveyor belt is greater than or equal to the deviation angle threshold value CTy of the conveyor belt, a displacement signal of the conveyor belt is generated, indicating that during the operation of the conveyor belt, the deviation angle between the maximum deviation point and the minimum deviation point of the conveyor belt is displaced compared with the deviation angle of the conveyor belt under the standard state. At this time, the conveyor belt is prone to falling off and misalignment during operation, and needs to be replaced and repaired in time to ensure the normal operation of the conveyor belt;

[0086] By testing the tension of the conveyor belt during operation, we can preliminarily determine whether the conveyor belt is loose. Then, based on the crack detection on the surface of the conveyor belt, we can effectively determine whether there is a risk of the conveyor belt breaking during operation. Then, we can detect the offset of the upper and lower layers of the conveyor belt, and at the same time, detect the offset angle of the conveyor belt to achieve multi-faceted detection of the conveyor belt, better ensure the stability of the conveyor belt during operation, and provide an accurate calculation basis for the stable operation of the conveyor belt to avoid the conveyor belt from breaking or falling off during operation.

[0087] Embodiment 2

[0088] Reference Figure 2As shown, based on the above embodiment, this embodiment provides a detection system for conveyor belt damage, including:

[0089] Pre-check module: obtain the tension value of the conveyor belt through the tension sensor, and mark the tension value as ZN, and obtain the rated tension value ZED of the conveyor belt for stable operation; calculate the tension variation rate ZB of the conveyor belt; and compare it with the tension variation threshold ZY of the conveyor belt operation; obtain the tension stability signal of the conveyor belt;

[0090] Crack detection module: Based on the conveyor belt tension stability signal, the high-speed camera maintains the shooting interval time value TSD to take pictures; and each taken picture is marked as w, where w is 1, 2, 3...WSD; then edge detection and recognition are performed on each taken picture and the number of cracks in each taken picture is counted and marked as HL W ;

[0091] Based on the crack quantity value set in the WSD photos, the crack performance value BHLH of the conveyor belt is calculated and compared with the crack performance threshold LHY to obtain the surface stability signal;

[0092] Flush detection module: Based on the surface stability signal, the conveying length value ZL of the conveyor belt is obtained, and the measuring points of the conveyor belt are marked with a unit length k as the distance interval, and each measuring point is marked as i, where i is 1, 2, 3, etc.; the upper horizontal distance value of the upper surface side of the conveyor belt at each measuring point from the measuring point during the operation of the conveyor belt is measured by a laser rangefinder, which is recorded as JZSF i ; Then obtain the lower horizontal distance value of the lower surface side of the conveyor belt from the measuring point at each measuring point, recorded as JZXB i ; Calculate the conveyor belt point deviation difference JZP i , further obtain the conveyor belt alignment signal;

[0093] Deviation detection module: Based on the transmission belt leveling signal, the maximum deviation angle value CT of the conveyor belt is calculated and compared with the conveyor belt deviation angle threshold CTy to obtain the conveyor belt stability signal;

[0094] It can better ensure the stability of the conveyor belt during operation, and at the same time, provide accurate calculation basis for the stable operation of the conveyor belt to avoid the breakage or falling off of the conveyor belt during operation.

[0095] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A method for detecting conveyor belt damage, characterized in that: The following steps are involved: The tension value of the conveyor belt is measured by the tension sensor and marked as ZN. Meanwhile, the rated tension value ZED of the conveyor belt for stable operation is obtained. Calculate and obtain the belt tension variation rate ZB; compare it with the belt tension variation threshold ZY during the operation of the belt; obtain the belt tension stability signal; Based on the conveyor belt tension stability signal, the high-speed camera maintains the shooting interval time value TSD to shoot pictures; and each shot picture is marked as w, where w is 1, 2, 3...WSD; then edge detection and recognition are performed on each shot picture, and the number of cracks in each shot picture is counted and marked as HL W ; Based on the crack quantity value set in the WSD photos, the crack performance value BHLH of the conveyor belt is calculated and compared with the crack performance threshold LHY; Get a surface stable signal.

2. A method for detecting conveyor belt damage according to claim 1, characterized in that: Based on the surface stability signal, the conveying length value ZL of the conveyor belt is obtained, and the measuring points of the conveyor belt are marked with a unit length k as the distance interval, and each measuring point is marked as i, where i is 1, 2, 3...; the upper horizontal distance value of the upper surface side of the conveyor belt at each measuring point from the measuring point during the operation of the conveyor belt is obtained by measuring with a laser rangefinder, which is recorded as JZSF i ; Then obtain the lower horizontal distance value of the lower surface side of the conveyor belt from the measuring point at each measuring point, recorded as JZXB i ; Calculate the conveyor belt point deviation difference JZP i , further obtain the conveyor belt alignment signal; Based on the transmission belt leveling signal, the maximum deviation angle value CT of the conveyor belt is calculated and compared with the conveyor belt deviation angle threshold CTy to obtain the conveyor belt stability signal.

3. A method for detecting conveyor belt damage according to claim 2, characterized in that: Calculate and obtain the tension variation rate ZB of the conveyor belt; Compare the tension variation rate ZB of the conveyor belt with the tension variation threshold ZY of the conveyor belt operation; If the tension variation rate ZB of the conveyor belt is less than or equal to the tension variation threshold ZY, a conveyor belt tension stability signal is generated; If the conveyor belt tension variation rate ZB is greater than the tension variation threshold ZY, a conveyor belt tension abnormality signal is generated.

4. A method for detecting conveyor belt damage according to claim 2, characterized in that: The shooting interval duration value TSD is calculated as follows: Get the running speed value of the conveyor belt, recorded as VSD, and at the same time, get the length value LSD of the picture taken by the high-speed camera; Calculate and obtain the shooting interval duration value TSD of the high-speed camera.

5. A method for detecting conveyor belt damage according to claim 2, characterized in that: The WSD is the number of pictures taken by the high-speed camera.

6. A method for detecting conveyor belt damage according to claim 2, characterized in that: The calculation method of the crack performance value BHLH of the conveyor belt is: Get the crack number value set in WSD photos, get the maximum crack number, recorded as HLmax; calculate the crack variation value LLH of each photo and the adjacent photos W ; The standard deviation value Cllh of crack variation of the conveyor belt is calculated by the standard deviation formula; Finally, the crack performance value BXLH of the conveyor belt is calculated.

7. A method for detecting conveyor belt damage according to claim 6, characterized in that: Compare the crack performance value BHLH of the conveyor belt with the crack performance threshold value LHY; If the crack performance value BHLH of the conveyor belt is greater than the crack performance threshold LHY, a crack risk signal is generated; If the crack manifestation value BHLH of the conveyor belt is equal to the crack manifestation threshold LHY, a surface stability signal is generated.

8. A method for detecting conveyor belt damage according to claim 1, characterized in that: Calculate and obtain the conveyor belt point deviation difference JZP i ; Extract the maximum value of the conveyor belt point deviation difference, and record it as the point deviation difference extreme value JZPmax; Compare the conveyor belt's point deviation difference extreme value JZPmax with the point deviation threshold value JZPY; If the conveyor belt's point deviation difference extreme value JZPmax is less than or equal to the point deviation threshold value JZPY, a conveyor belt alignment signal is generated; If the conveyor belt's point deviation difference extreme value JZPmax is greater than the point deviation threshold value JZPY, a conveyor belt out-of-position signal is generated.

9. A method for detecting conveyor belt damage according to claim 1, characterized in that: The conveyor belt stability signal is obtained in the following manner: Get the upper horizontal distance value JZSF of the upper surface side distance measurement point of the conveyor belt i The lower horizontal distance value JZXB from the measuring point of the lower surface side distance i ; The mean side distance of the measuring point of the transmission belt is obtained by calculation JZJZ i ; Get the maximum value of the mean side distance of the measuring point of the conveyor belt, record it as JZJZmax, and record the measuring point as e; Then obtain the minimum mean value of the side distance of the measuring point, record it as JZJZmin, and record the measuring point as f; The maximum deviation angle value CT of the conveyor belt is obtained by calculation; Compare the maximum conveyor belt deviation angle value CT with the conveyor belt deviation angle threshold CTy; If the maximum deviation angle value CT of the conveyor belt is less than the conveyor belt deviation angle threshold CTy, a conveyor belt stability signal is generated; If the maximum deviation angle value C of the conveyor belt is greater than or equal to the transmission belt deviation angle threshold value CTy, a transmission belt displacement signal is generated.

10. A conveyor belt damage detection system, characterized in that: The system is used to perform the detection method as described in any one of claims 1 to 9, comprising: Pre-check module: obtain the tension value of the conveyor belt through the tension sensor, and mark the tension value as ZN, and obtain the rated tension value ZED of the conveyor belt for stable operation; calculate the tension variation rate ZB of the conveyor belt; and compare it with the tension variation threshold ZY of the conveyor belt operation; obtain the tension stability signal of the conveyor belt; Crack detection module: Based on the conveyor belt tension stability signal, the high-speed camera maintains the shooting interval time value TSD to take pictures; and each taken picture is marked as w, where w is 1, 2, 3...WSD; then edge detection and recognition are performed on each taken picture and the number of cracks in each taken picture is counted and marked as HL W ; Based on the crack quantity value set in the WSD photos, the crack performance value BHLH of the conveyor belt is calculated and compared with the crack performance threshold LHY to obtain the surface stability signal; Flush detection module: Based on the surface stability signal, the conveying length value ZL of the conveyor belt is obtained, and the measuring points of the conveyor belt are marked with a unit length k as the distance interval, and each measuring point is marked as i, where i is 1, 2, 3, etc.; the upper horizontal distance value of the upper surface side of the conveyor belt at each measuring point from the measuring point during the operation of the conveyor belt is measured by a laser rangefinder, which is recorded as JZSF i ; Then obtain the lower horizontal distance value of the lower surface side of the conveyor belt from the measuring point at each measuring point, recorded as JZXB i ; Calculate the conveyor belt point deviation difference JZP i , further obtain the conveyor belt alignment signal; Deviation detection module: Based on the transmission belt leveling signal, the maximum deviation angle value CT of the conveyor belt is calculated and compared with the conveyor belt deviation angle threshold CTy to obtain the conveyor belt stability signal.

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