Optical cable intelligent detection system and detection method

Abstract

The present invention relates to the field of optical cable detection technology, and discloses an intelligent optical cable detection system and detection method, including using an infrared device to detect the surface of the optical cable, collecting the fracture image and the surrounding environment image after the fracture is found, and measuring the length of the fracture. Subsequently, move from the detection starting point to the other end, collect the optical cable image in three directions, and compare the trajectory length to determine whether it is bent. If there is a bend, collect the bend image, measure the angle, and compare it with the standard value to decide whether to collect the bend environment image and length. The acquired data helps to accurately locate and perform manual maintenance. By introducing infrared rays to determine whether the optical cable is broken, this method can quickly locate the problem area, and the operation is simple and the cost is low. By acquiring the optical cable image from multiple angles, the surface of the optical cable can be fully covered, the state of the optical cable can be checked more comprehensively, and it is ensured that no possible bending area is missed, thereby improving the reliability of the detection result.

Description

Technical Field

[0001] The present invention relates to the technical field of optical cable detection, and in particular to an optical cable intelligent detection system and detection method. Background Art

[0002] Optical cables are manufactured to meet optical, mechanical or environmental performance specifications. They are communication cable components that use one or more optical fibers placed in a sheath as transmission media and can be used individually or in groups. Optical cables are mainly composed of optical fibers, plastic protective sleeves and plastic sheaths. Optical cables are a type of communication line that uses a certain number of optical fibers to form a cable core in a certain way, which is covered with a sheath and sometimes an outer sheath to achieve optical signal transmission. The basic structure of an optical cable is generally composed of a cable core, reinforcing steel wire, filler and sheath. In addition, there are also components such as a waterproof layer, a buffer layer, and an insulated metal conductor as needed.

[0003] With the rapid development of mobile communication technology, optical fiber communication as its main signal transmission medium is gaining increasing attention and being widely used. With its unique advantages, such as high transmission capacity, low attenuation, small size, light weight, strong anti-electromagnetic interference ability and resource conservation, optical fiber communication has become an indispensable choice for major mobile operators.

[0004] Generally, the more common way to detect the installation of optical cables is to use special equipment to detect abnormal positions at one end of the optical cable. The abnormal position obtained generally refers to the length of the optical cable. However, in the actual installation of optical cables, there will be a certain degree of bending and sagging. The abnormal position obtained by the equipment will deviate from the actual geographical location, and maintenance personnel will need to find it again. In addition, when installing optical cables, if there is a large bend in the optical cable, it will affect the signal transmission function of the optical cable. At present, the detection angles for installing optical cables are limited, and there is generally only one detection angle. The optical cable may bend at other angles. Therefore, the detection results obtained from only one detection angle are not accurate enough. This solution intends to propose a method and system for intelligently detecting the breakage of installed optical cables and detecting the bending of optical cables from multiple angles. Summary of the invention

[0005] The present invention provides an optical cable intelligent detection system and detection method, which facilitate solving the problems mentioned in the above background technology.

[0006] The present invention provides the following technical solution: an optical cable intelligent detection method, comprising:

[0007] Use an infrared ray transmitter connected to one end of the optical cable, introduce infrared rays into the optical cable, and mark the end of the optical cable connected to the infrared ray transmitter as the starting point of the detection;

[0008] Use infrared detection equipment to detect along the outer surface of the installed optical cable;

[0009] According to the detection results of the infrared detection device, it is judged whether the installed optical cable is broken;

[0010] If a break in the optical cable is detected, the image acquisition device is controlled to acquire an image of the break, which is recorded as a break image;

[0011] By using an image acquisition device, image information of the surrounding environment is collected at the fracture site and recorded as a fracture environment image;

[0012] The length of the optical cable from the break to the starting point of the detection is measured by a length measuring device and recorded as the break length;

[0013] The curvature detection device moves from the detection starting point of the optical cable to the other end, and in the process of moving, the optical cable image is collected from three directions around the optical cable, and the collected optical cable image is recorded as the curvature determination image;

[0014] Obtaining the curvature determination image collected in each direction, and obtaining the length of the optical cable track in the image;

[0015] Compare the lengths of the optical cable tracks in three directions at the same location to determine whether the optical cable is bent;

[0016] If the optical cable is bent, the image position of the bend is acquired based on the comparison result of the optical cable track length;

[0017] Controlling the image acquisition device to acquire an image of the bend at a position where an image of the bend is acquired, and recording the acquired image as a bend image;

[0018] According to the collected bending image, the bending angle of the bent optical cable is obtained;

[0019] Compare the bending angle with the bending standard value to determine whether to perform the operations of collecting the bending environment image and obtaining the length of the bending part;

[0020] Through the fracture image, fracture environment image, fracture length, as well as the bending image, bending environment image, and bending length, the specific conditions and positions of the fracture and bending are obtained, and manual maintenance operations are performed.

[0021] Optionally, judging whether the installed optical cable is broken according to the detection result of the infrared detection device specifically includes:

[0022] Controlling the infrared detection device on the outer surface of the optical cable to move from the detection starting point of the optical cable to the other end;

[0023] During the traveling process, the outer surface of the optical cable is detected to see if there is infrared light introduced into the optical cable;

[0024] If the infrared measuring device detects infrared rays introduced into the optical cable at a certain position on the surface of the optical cable, it is determined that the optical cable is broken at that position.

[0025] Optionally, the image information of the surrounding environment is collected at the fracture site by an image collection device and recorded as a fracture environment image, including:

[0026] The fracture location is taken as the fracture image acquisition position;

[0027] Obtain two directions pointing to the two ends of the optical cable from the fracture image acquisition position, which are respectively recorded as direction No. 1 and direction No. 2;

[0028] Obtain two directions perpendicular to the optical cable and in the same horizontal plane as the optical cable, which are respectively recorded as direction No. 3 and direction No. 4;

[0029] Control the image acquisition device at the fracture image acquisition position to respectively acquire images from the first direction, the second direction, the third direction and the fourth direction;

[0030] The four images obtained are used as fracture environment images.

[0031] Optionally, the length of the optical cable from the break to the detection starting point measured by the length measuring device is recorded as the break length, which is specifically:

[0032] Control the length measuring device to move along with the infrared detection device on the optical cable, and count the distance travelled during the moving process;

[0033] When the infrared detection device detects the presence of infrared rays on the outer surface of the optical cable, the length measuring device is controlled to record the current travel distance;

[0034] The recorded travel distance is taken as the length of the optical cable from the break to the detection starting point, which is recorded as the break length.

[0035] Optionally, the curvature detection device moves from the detection starting point of the optical cable to the other end, and during the movement, collects optical cable images around the optical cable from three directions, and records the collected optical cable images as curvature determination images, specifically including:

[0036] The cross section perpendicular to the length direction of the optical cable is recorded as the vertical cross section;

[0037] Controlling the three image acquisition probes of the curvature detection device to remain on the same vertical section during the moving process;

[0038] The three image acquisition probes of the curvature detection device are arranged to surround the optical cable on the same vertical section, and the spacings between adjacent image acquisition probes are controlled to be the same;

[0039] Divide the installed optical cable into several equally spaced detection areas according to the length between the two end points;

[0040] Use the image acquisition probe to completely acquire an image of the optical cable in the inspection area each time;

[0041] Make the optical cable image acquired by the image acquisition probe each time overlap with the optical cable image acquired last time;

[0042] The three images acquired each time are taken as a set of curvature determination images.

[0043] Optionally, comparing the optical cable track lengths in three directions at the same position to determine whether the optical cable is bent is specifically as follows:

[0044] Obtain three images from the same set of curvature determination images and record them as comparison images;

[0045] Obtain the length of the optical cable and the length of the load-bearing steel rope in each comparison image, and use them as the optical cable track length and the standard length of each comparison image respectively;

[0046] Set the deviation threshold A;

[0047] Obtain the difference between the optical cable track length in each comparison image and the standard length, and record it as the standard deviation value;

[0048] The standard deviation values ​​of the three comparison images are compared with the deviation threshold values. If all standard deviation values ​​are less than or equal to the deviation threshold value, it is determined that the optical cable is not bent.

[0049] If the standard deviation is greater than the deviation threshold, it is determined that the optical cable is bent. The optical cable track lengths of the three comparison images are subtracted from each other, and the absolute value of the difference is obtained, which is recorded as the track difference.

[0050] Compare the obtained trajectory differences and select the trajectory difference with the largest value as the target trajectory difference.

[0051] Optionally, if the optical cable is bent, the image position of the bend is acquired according to the comparison result of the optical cable trajectory length, specifically:

[0052] Obtain the cable track length corresponding to the target track difference, and obtain two corresponding comparison images according to the cable track length, which are recorded as target comparison images;

[0053] Obtain two image acquisition probes corresponding to the target contrast image, which are denoted as target image acquisition probes;

[0054] The position between the two target image acquisition probes is used as the position for acquiring the image at the bend.

[0055] Optionally, the controlling image acquisition device collects an image of the bend at a position for collecting an image of the bend, and records the collected image as a bend image, specifically:

[0056] Set the unit shooting angle B;

[0057] Between the two target image acquisition probes, a bent image acquisition position is set every B angle;

[0058] The direction in which the bent image acquisition position points to the optical cable is used as the bent image acquisition direction;

[0059] Controlling the image acquisition device to be at a bending image acquisition position and to acquire a bending image of the optical cable in a bending image acquisition direction;

[0060] The step of obtaining the bending angle of the bent optical cable according to the collected bending image is specifically as follows:

[0061] Acquire all the collected bending images, and acquire the bending angle of the optical cable in each bending image;

[0062] The bending angles of the optical cables in each bending image are compared, and the largest bending angle is selected as the bending angle of the bent optical cable.

[0063] Optionally, the bending angle is compared with the bending standard value to determine whether to perform the operations of collecting the bending environment image and obtaining the length of the bending part, specifically:

[0064] Set the bending threshold C;

[0065] If the bending angle is less than or equal to C, no adjustment is made to the bending point;

[0066] If the bending angle is greater than C, a bending image corresponding to the maximum bending angle is obtained, and a bending image acquisition position corresponding to the bending image is obtained, and the bending image acquisition position is used as a bending environment image acquisition position;

[0067] Obtain the directions from the bending environment image acquisition position to the two end points of the optical cable, which are recorded as direction No. 5 and direction No. 6 respectively;

[0068] Obtain two directions perpendicular to the optical cable and in the same horizontal plane as the optical cable, which are respectively recorded as direction No. 7 and direction No. 8;

[0069] Control the image acquisition device to the bending environment image acquisition position to respectively acquire images from the fifth direction, the sixth direction, the seventh direction and the eighth direction;

[0070] The four images obtained are used as bending environment images;

[0071] The recorded travel distance of the length measuring device when it travels to the bend is acquired as the bend length.

[0072] A system for implementing the optical cable intelligent detection method, comprising:

[0073] Infrared emitting device: emitting infrared rays into the optical cable;

[0074] Infrared detection device: detects whether there is infrared light emitted by the infrared emitting device on the outer surface of the optical cable;

[0075] Image acquisition device: collects images of the abnormal position on the optical cable and collects environmental images around the abnormal position;

[0076] Length measuring device: Starts from one end of the optical cable as the starting point, records the travel distance, and obtains the length of the optical cable from the starting end to the current position of the length measuring device;

[0077] Curvature detection device: Use three image acquisition probes to obtain images of the optical cable in three directions, and determine whether the optical cable is bent based on the images obtained;

[0078] Processing module: obtains required information and performs different operations through collected images.

[0079] The present invention has the following beneficial effects:

[0080] 1. By introducing infrared rays into the optical cable and detecting whether there is leaked infrared rays on the surface of the optical cable, it is possible to determine whether the optical cable is broken. This method can obtain the actual location of the break and directly observe the break. It can also monitor in real time whether there is leakage in the optical cable. When the optical cable is broken or damaged, the specific problem area can be quickly located. Compared with traditional optical cable detection methods, this method is simpler and less costly. It does not require expensive professional equipment or complicated operating procedures, so it has significant advantages in maintenance and management costs.

[0081] 2. Obtain the surrounding environment image of the fracture to help locate the position of the fracture. During the subsequent maintenance operation, the specific position of the fracture can be quickly located, thereby reducing the time of searching for the fracture and improving the maintenance efficiency.

[0082] 3. By obtaining the length of the fracture, the specific position of the fracture can be assisted in locating, further shortening the time spent on finding the fracture of the belt and improving maintenance efficiency.

[0083] 4. By collecting images of the optical cable from multiple angles, the bending conditions of the optical cable can be obtained. The optical cable images from three directions can fully cover the surface of the optical cable. By obtaining data from multiple angles, the status of the optical cable can be more comprehensively checked to ensure that no possible bending areas are missed. Even if the bending of the optical cable is not easy to be found at certain angles, through multi-angle image acquisition, it can be ensured that the bending will not be missed, which can increase the probability of finding problems and improve the comprehensiveness and accuracy of detection. Observation from multiple angles helps to more accurately identify and locate bending points, because a single perspective may not reveal all bending conditions. Data obtained from different directions can verify each other, improve the reliability of the detection results, and reduce the possibility of misjudgment.

[0084] 5. By obtaining the bending environment image and the length of the bend, it can help to quickly locate the bend during subsequent maintenance work, reduce the time spent on finding the bend, and improve maintenance efficiency.

[0085] 6. Collect images of the surrounding environment from four directions. Through images from four directions, a comprehensive view of the surrounding environment can be obtained, which helps to understand the relative layout of the location and environmental characteristics.

[0086] 7. By collecting images at fixed angles, the consistency and standardization of measurements can be ensured. At the same time, the comprehensiveness of the images collected at the bends is ensured. Selecting the largest bend angle in the image as the actual bend angle helps to identify the most serious bend situation and provide key information for further analysis and processing.

[0087] 8. The position with the maximum trajectory difference is used as the shooting position for obtaining the bending condition. The position with the maximum trajectory difference is more likely to be the actual position where the bending occurs. Directly obtaining the bending image from this position can obtain the actual situation of the bending more quickly, reduce the number of repeated acquisitions of bending images for comparison to obtain the actual bending situation, and thus improve detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0088] Figure 1 This is a schematic diagram of the position of the image acquisition probe of the present invention.

[0089] Figure 2 This is a schematic diagram of the fracture image acquisition method of the present invention.

[0090] Figure 3 It is a schematic diagram of the bending environment image acquisition position of the present invention.

[0091] Figure 4 It is a schematic diagram of the bending image acquisition position of the present invention. DETAILED DESCRIPTION

[0092] 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.

[0093] Embodiment, a method for intelligent detection of optical cables, comprising:

[0094] The optical cable is installed between two poles. There is a load-bearing steel rope between the two poles. The steel rope can withstand a large tensile force. When installing the steel rope, the steel rope is tightened so that it is as close to a straight state as possible between the two poles. The optical cable is installed on the steel rope and is connected to the steel rope by hooks at certain lengths. Therefore, there may be sagging and bending.

[0095] Use an infrared ray transmitter connected to one end of the optical cable, introduce infrared rays into the optical cable, and mark the end of the optical cable connected to the infrared ray transmitter as the starting point of the detection;

[0096] Use infrared detection equipment to detect along the outer surface of the installed optical cable;

[0097] According to the detection results of the infrared detection device, it is judged whether the installed optical cable is broken;

[0098] By introducing infrared rays into the optical cable and detecting whether there is any leaked infrared rays on the surface of the optical cable, it is possible to determine whether the optical cable is broken. This method can obtain the actual location of the break and directly observe the break. It can also monitor in real time whether there is any leakage in the optical cable. When the optical cable is broken or damaged, the specific problem area can be quickly located. Compared with traditional optical cable detection methods, this method is simpler and less costly. It does not require expensive professional equipment or complicated operating procedures, so it has significant advantages in maintenance and management costs.

[0099] If a break in the optical cable is detected, the image acquisition device is controlled to acquire an image of the break, which is recorded as a break image;

[0100] The image acquisition device is used to collect image information of the surrounding environment at the fracture site and record it as a fracture environment image; the image of the fracture site is obtained so that maintenance personnel can understand the detailed information of the fracture site and make adequate preparations for subsequent maintenance operations. The image of the surrounding environment of the fracture site is obtained to help locate the position of the fracture site. During subsequent maintenance operations, the specific position of the fracture site can be quickly located, thereby reducing the time to find the fracture site and improving maintenance efficiency.

[0101] The length of the optical cable from the break to the detection starting point is measured by a length measuring device and recorded as the break length. The obtained break length is used to assist in locating the specific position of the break, further shortening the time spent on finding the break and improving maintenance efficiency.

[0102] Through the curvature detection device, the optical cable moves from the detection starting point to the other end, and in the process of moving, the optical cable image is collected from three directions around the optical cable, and the collected optical cable image is recorded as the curvature judgment image; the optical cable image is collected from multiple angles to obtain the curvature of the optical cable. The optical cable images from three directions can fully cover the surface of the optical cable, and the data can be obtained from multiple angles to more comprehensively check the status of the optical cable to ensure that no possible bending area is missed. Even if the bending of the optical cable is not easy to be found at certain angles, the multi-angle image collection can ensure that the bending will not be missed, which can increase the probability of finding problems and improve the comprehensiveness and accuracy of the detection. Observation from multiple angles helps to identify and locate the bending point more accurately, because a single perspective may not reveal all bending conditions. Data obtained from different directions can verify each other, improve the reliability of the detection results, and reduce the possibility of misjudgment.

[0103] Obtaining the curvature determination image collected in each direction, and obtaining the length of the optical cable track in the image;

[0104] Compare the lengths of the optical cable tracks in three directions at the same location to determine whether the optical cable is bent;

[0105] If the optical cable is bent, the image position of the bend is acquired based on the comparison result of the optical cable track length;

[0106] Controlling the image acquisition device to acquire an image of the bend at a position where an image of the bend is acquired, and recording the acquired image as a bend image;

[0107] According to the collected bending image, the bending angle of the bent optical cable is obtained;

[0108] The bending angle is compared with the bending standard value to determine whether to perform the operations of collecting the bending environment image and obtaining the length of the bending point; by obtaining the bending environment image and the length of the bending point, it can help to quickly locate the position of the bending point during subsequent maintenance work, reduce the time spent on finding the bending point, and improve maintenance efficiency.

[0109] Through the fracture image, fracture environment image, fracture length, as well as the bending image, bending environment image, and bending length, the specific conditions and positions of the fracture and bending are obtained, and manual maintenance operations are performed.

[0110] The step of judging whether the installed optical cable is broken according to the detection result of the infrared detection device specifically includes:

[0111] Controlling the infrared detection device on the outer surface of the optical cable to move from the detection starting point of the optical cable to the other end;

[0112] During the traveling process, the outer surface of the optical cable is detected to see if there is infrared light introduced into the optical cable;

[0113] If the infrared measuring device detects infrared rays introduced into the optical cable at a certain position on the surface of the optical cable, it is determined that the optical cable is broken at that position.

[0114] The image acquisition device is used to collect image information of the surrounding environment at the fracture site, which is recorded as a fracture environment image, including:

[0115] The fracture location is taken as the fracture image acquisition position;

[0116] Reference Figure 2 , obtain two directions pointing to the two ends of the optical cable from the fracture image acquisition position, which are respectively recorded as direction No. 1 and direction No. 2;

[0117] Obtain two directions perpendicular to the optical cable and in the same horizontal plane as the optical cable, which are respectively recorded as direction No. 3 and direction No. 4;

[0118] Control the image acquisition device at the fracture image acquisition position to respectively acquire images from the first direction, the second direction, the third direction and the fourth direction;

[0119] The four images obtained are used as fracture environment images. Images of the surrounding environment are collected from four directions. Through the images in four directions, a comprehensive view of the surrounding environment can be obtained, which helps to understand the relative layout and environmental characteristics of the location.

[0120] The length of the optical cable from the break to the detection starting point measured by the length measuring device is recorded as the break length, which is specifically:

[0121] Control the length measuring device to move along with the infrared detection device on the optical cable, and count the distance travelled during the moving process;

[0122] When the infrared detection device detects the presence of infrared rays on the outer surface of the optical cable, the length measuring device is controlled to record the current travel distance;

[0123] The recorded travel distance is taken as the length of the optical cable from the break to the detection starting point, which is recorded as the break length.

[0124] The curvature detection device moves from the detection starting point of the optical cable to the other end, and during the movement, collects the optical cable image from three directions around the optical cable, and records the collected optical cable image as the curvature determination image, which specifically includes:

[0125] The cross section perpendicular to the length direction of the optical cable is recorded as the vertical cross section;

[0126] Reference Figure 1 , control the three image acquisition probes of the curvature detection device to remain on the same vertical section during the movement; so that the three image acquisition probes acquire images of the same section of optical cable.

[0127] The three image acquisition probes of the curvature detection device are arranged to surround the optical cable on the same vertical section, and the spacings between adjacent image acquisition probes are controlled to be the same;

[0128] Divide the installed optical cable into several equally spaced detection areas according to the length between the two end points;

[0129] Use the image acquisition probe to completely acquire an image of the optical cable in the inspection area each time;

[0130] Make the optical cable image acquired by the image acquisition probe each time overlap with the optical cable image acquired last time; ensure that the image of the optical cable acquired by the image acquisition probe is complete, and ensure that the image of the entire optical cable can be acquired without omission.

[0131] The three images acquired each time are taken as a set of curvature determination images.

[0132] The comparing of the optical cable track lengths in three directions at the same position to determine whether the optical cable is bent is specifically as follows:

[0133] Obtain three images from the same set of curvature determination images and record them as comparison images;

[0134] The length of the optical cable and the length of the load-bearing steel rope in each comparison image are obtained as the optical cable track length and the standard length of each comparison image respectively; the steel rope is infinitely close to straight, so it can be used as a standard value. If the optical cable is not bent, the length will be the same as the steel rope length.

[0135] Set the deviation threshold A; the A value represents the maximum difference allowed between the length of the optical cable and the steel rope. The smaller the A value is, the closer the required optical cable length is to the length of the steel rope, that is, the straighter the optical cable is required to be. If A is set to 0, the optical cable is required to be equal to the length of the steel rope, which is approximately equal to no bending.

[0136] Obtain the difference between the optical cable track length in each comparison image and the standard length, and record it as the standard deviation value;

[0137] The standard deviation values ​​of the three comparison images are compared with the deviation threshold values. If all standard deviation values ​​are less than or equal to the deviation threshold value, it is determined that the optical cable is not bent.

[0138] If the standard deviation is greater than the deviation threshold, it is determined that the optical cable is bent. The optical cable track lengths of the three comparison images are subtracted from each other, and the absolute value of the difference is obtained, which is recorded as the track difference.

[0139] Compare the obtained trajectory differences and select the trajectory difference with the largest value as the target trajectory difference. The position with the largest trajectory difference is the position with the most severe bending. Observing at this position can more clearly obtain the actual bending situation.

[0140] If the optical cable is bent, the image position of the bend is acquired based on the comparison result of the optical cable track length, specifically:

[0141] Obtain the cable track length corresponding to the target track difference, and obtain two corresponding comparison images according to the cable track length, which are recorded as target comparison images;

[0142] Obtain two image acquisition probes corresponding to the target contrast image, which are denoted as target image acquisition probes;

[0143] The position between the two target image acquisition probes is used as the position for acquiring the image at the bend.

[0144] The control image acquisition device collects an image of the bend at the position where the image of the bend is collected, and records the collected image as the bend image, specifically:

[0145] Set the unit shooting angle B; the B value setting is related to the number of times the image is collected. The smaller the B value is set, the more images are collected at the bend.

[0146] Reference Figure 4 , between the two target image acquisition probes, a bending image acquisition position is set at every B angle; by acquiring images at every fixed angle, the consistency and standardization of the measurement can be guaranteed. At the same time, the comprehensiveness of the images collected at the bend is guaranteed. Selecting the largest bend angle in the image as the actual bend angle helps to identify the most serious bend situation and provide key information for further analysis and processing.

[0147] The direction in which the bent image acquisition position points to the optical cable is used as the bent image acquisition direction;

[0148] Controlling the image acquisition device to be at a bending image acquisition position and to acquire a bending image of the optical cable in a bending image acquisition direction;

[0149] The step of obtaining the bending angle of the bent optical cable according to the collected bending image is specifically as follows:

[0150] Acquire all the collected bending images, and acquire the bending angle of the optical cable in each bending image;

[0151] The bending angles of the optical cables in each bending image are compared, and the largest bending angle is selected as the bending angle of the bent optical cable.

[0152] The bending angle is compared with the bending standard value to determine whether to perform the operations of collecting the bending environment image and obtaining the length of the bending part, specifically:

[0153] Set the bending threshold C; the C value indicates the maximum allowed bending angle. The smaller the C value, the smaller the required bending angle. When the C value is 0, the optical cable is required not to bend.

[0154] If the bending angle is less than or equal to C, no adjustment is made to the bending point;

[0155] If the bending angle is greater than C, a bending image corresponding to the maximum bending angle is obtained, and a bending image acquisition position corresponding to the bending image is obtained, and the bending image acquisition position is used as a bending environment image acquisition position;

[0156] Reference Figure 3 , obtain the directions from the bending environment image acquisition position to the two end points of the optical cable, which are recorded as direction No. 5 and direction No. 6 respectively;

[0157] Obtain two directions perpendicular to the optical cable and in the same horizontal plane as the optical cable, which are respectively recorded as direction No. 7 and direction No. 8;

[0158] Control the image acquisition device to the bending environment image acquisition position to respectively acquire images from the fifth direction, the sixth direction, the seventh direction and the eighth direction;

[0159] The four images obtained are used as bent environment images; images of the surrounding environment are collected from four directions. Through the images in four directions, a comprehensive view of the surrounding environment can be obtained, which is helpful for understanding the relative layout of the location and environmental characteristics.

[0160] The recorded travel distance of the length measuring device when it travels to the bend is acquired as the bend length.

[0161] A system for implementing the optical cable intelligent detection method, comprising:

[0162] Infrared emitting device: emitting infrared rays into the optical cable;

[0163] Infrared detection device: detects whether there is infrared light emitted by the infrared emitting device on the outer surface of the optical cable;

[0164] Image acquisition device: collects images of the abnormal position on the optical cable and collects environmental images around the abnormal position;

[0165] Length measuring device: Starts from one end of the optical cable as the starting point, records the travel distance, and obtains the length of the optical cable from the starting end to the current position of the length measuring device;

[0166] Curvature detection device: Use three image acquisition probes to obtain images of the optical cable in three directions, and determine whether the optical cable is bent based on the images obtained;

[0167] Processing module: obtains required information and performs different operations through collected images.

[0168] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0169] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An optical cable intelligent detection method, characterized in that: include: Use an infrared ray transmitter connected to one end of the optical cable, introduce infrared rays into the optical cable, and mark the end of the optical cable connected to the infrared ray transmitter as the starting point of the detection; Use infrared detection equipment to detect along the outer surface of the installed optical cable; According to the detection results of the infrared detection device, it is judged whether the installed optical cable is broken; If a break in the optical cable is detected, the image acquisition device is controlled to acquire an image of the break, which is recorded as a break image; By using an image acquisition device, image information of the surrounding environment is collected at the fracture site and recorded as a fracture environment image; The length of the optical cable from the break to the starting point of the detection is measured by a length measuring device and recorded as the break length; The curvature detection device moves from the detection starting point of the optical cable to the other end, and in the process of moving, the optical cable image is collected from three directions around the optical cable, and the collected optical cable image is recorded as the curvature determination image; Obtaining the curvature determination image collected in each direction, and obtaining the length of the optical cable track in the image; Compare the lengths of the optical cable tracks in three directions at the same location to determine whether the optical cable is bent; If the optical cable is bent, the image position of the bend is acquired based on the comparison result of the optical cable track length; Controlling the image acquisition device to acquire an image of the bend at a position where an image of the bend is acquired, and recording the acquired image as a bend image; According to the collected bending image, the bending angle of the bent optical cable is obtained; Compare the bending angle with the bending standard value to determine whether to perform the operations of collecting the bending environment image and obtaining the length of the bending part; Through the fracture image, fracture environment image, fracture length, and bending image, bending environment image, and bending length, the specific conditions and positions of the fracture and bending are obtained, and manual maintenance operations are performed; The curvature detection device moves from the detection starting point of the optical cable to the other end, and during the movement, collects the optical cable image from three directions around the optical cable, and records the collected optical cable image as the curvature determination image, which specifically includes: The cross section perpendicular to the length direction of the optical cable is recorded as the vertical cross section; Controlling the three image acquisition probes of the curvature detection device to remain on the same vertical section during the moving process; The three image acquisition probes of the curvature detection device are arranged to surround the optical cable on the same vertical section, and the spacings between adjacent image acquisition probes are controlled to be the same; Divide the installed optical cable into several equally spaced detection areas according to the length between the two end points; Use the image acquisition probe to completely acquire an image of the optical cable in the inspection area each time; Make the optical cable image acquired by the image acquisition probe each time overlap with the optical cable image acquired last time; The three images acquired each time are used as a set of curvature determination images; The comparing of the optical cable track lengths in three directions at the same position to determine whether the optical cable is bent is specifically as follows: Obtain three images from the same set of curvature determination images and record them as comparison images; Obtain the length of the optical cable and the length of the load-bearing steel rope in each comparison image, and use them as the optical cable track length and the standard length of each comparison image respectively; Set the deviation threshold A; Obtain the difference between the optical cable track length in each comparison image and the standard length, and record it as the standard deviation value; The standard deviation values ​​of the three comparison images are compared with the deviation threshold values. If all standard deviation values ​​are less than or equal to the deviation threshold value, it is determined that the optical cable is not bent. If the standard deviation value is greater than the deviation threshold, it is determined that the optical cable is bent, and the optical cable track lengths of the three comparison images are subtracted from each other, and the absolute value of the difference is obtained, which is recorded as the track difference; Compare the obtained trajectory differences and select the trajectory difference with the largest value as the target trajectory difference; If the optical cable is bent, the image position of the bend is acquired based on the comparison result of the optical cable track length, specifically: Obtain the cable track length corresponding to the target track difference, and obtain two corresponding comparison images according to the cable track length, which are recorded as target comparison images; Obtain two image acquisition probes corresponding to the target contrast image, which are denoted as target image acquisition probes; The position between the two target image acquisition probes is used as the image acquisition position at the bend; The control image acquisition device collects an image of the bend at the position where the image of the bend is collected, and records the collected image as the bend image, specifically: Set the unit shooting angle B; Between the two target image acquisition probes, a bent image acquisition position is set every B angle; The direction in which the bent image acquisition position points to the optical cable is used as the bent image acquisition direction; Controlling the image acquisition device to be at a bending image acquisition position and to acquire a bending image of the optical cable in a bending image acquisition direction; The step of obtaining the bending angle of the bent optical cable according to the collected bending image is specifically as follows: Acquire all the collected bending images, and acquire the bending angle of the optical cable in each bending image; Compare the bending angles of the optical cable in each bending image, and select the largest bending angle as the bending angle of the bent optical cable; The bending angle is compared with the bending standard value to determine whether to perform the operations of collecting the bending environment image and obtaining the length of the bending part, specifically: Set the bending threshold C; If the bending angle is less than or equal to C, no adjustment is made to the bending point; If the bending angle is greater than C, a bending image corresponding to the maximum bending angle is obtained, and a bending image acquisition position corresponding to the bending image is obtained, and the bending image acquisition position is used as a bending environment image acquisition position; Obtain the directions from the bending environment image acquisition position to the two end points of the optical cable, which are recorded as direction No. 5 and direction No. 6 respectively; Obtain two directions perpendicular to the optical cable and in the same horizontal plane as the optical cable, which are respectively recorded as direction No. 7 and direction No. 8; Control the image acquisition device to the bending environment image acquisition position to respectively acquire images from the fifth direction, the sixth direction, the seventh direction and the eighth direction; The four images obtained are used as bending environment images; The recorded travel distance of the length measuring device when it travels to the bend is acquired as the bend length.

2. The optical cable intelligent detection method according to claim 1, characterized in that: The step of judging whether the installed optical cable is broken according to the detection result of the infrared detection device specifically includes: Controlling the infrared detection device on the outer surface of the optical cable to move from the detection starting point to the other end of the optical cable; During the traveling process, the outer surface of the optical cable is detected to see if there is infrared light introduced into the optical cable; If the infrared measuring device detects infrared rays introduced into the optical cable at a certain position on the surface of the optical cable, it is determined that the optical cable is broken at that position.

3. The optical cable intelligent detection method according to claim 1, characterized in that: The image acquisition device is used to collect image information of the surrounding environment at the fracture site, which is recorded as a fracture environment image, including: The fracture location is taken as the fracture image acquisition position; Obtain two directions pointing to the two ends of the optical cable from the fracture image acquisition position, which are respectively recorded as direction No. 1 and direction No. 2; Obtain two directions perpendicular to the optical cable and in the same horizontal plane as the optical cable, which are respectively recorded as direction No. 3 and direction No. 4; Control the image acquisition device at the fracture image acquisition position to respectively acquire images from the first direction, the second direction, the third direction and the fourth direction; The four images obtained are used as fracture environment images.

4. The optical cable intelligent detection method according to claim 1, characterized in that: The length of the optical cable from the break to the detection starting point measured by the length measuring device is recorded as the break length, which is specifically: Control the length measuring device to move along with the infrared detection device on the optical cable, and count the distance travelled during the moving process; When the infrared detection device detects the presence of infrared rays on the outer surface of the optical cable, the length measuring device is controlled to record the current travel distance; The recorded travel distance is taken as the length of the optical cable from the break to the detection starting point, which is recorded as the break length.

5. A system using the optical cable intelligent detection method according to claim 1, characterized in that: include: Infrared emitting device: emitting infrared rays into the optical cable; Infrared detection device: detects whether there is infrared light emitted by the infrared emitting device on the outer surface of the optical cable; Image acquisition device: collects images of the abnormal position on the optical cable and collects environmental images around the abnormal position; Length measuring device: Starts from one end of the optical cable as the starting point, records the travel distance, and obtains the length of the optical cable from the starting end to the current position of the length measuring device; Curvature detection device: Use three image acquisition probes to obtain images of the optical cable in three directions, and determine whether the optical cable is bent based on the images obtained; Processing module: obtains required information and performs different operations through collected images.

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