Cable surface bulge damage detection system

Abstract

The invention discloses a cable surface bulge damage detection system, which comprises a cable conveying unit, an image acquisition unit, an auxiliary lighting unit, an acquired image processing unit, an image analysis unit, a data storage unit, an alarm unit and an operation terminal, and is characterized in that the cable conveying unit comprises a cable laying device, a straightening device, a leading-out device and a cable collecting device; the image acquisition unit comprises a plurality of CCD cameras located between the straightening device and the straightening device, the auxiliary lighting unit comprises two annular light sources, and the CCD cameras perform image acquisition on the surface of a detected cable in a uniform bright field provided by the two annular light sources during working; according to the invention, the image is collected and sent to the operation terminal with embedded image processing, image recognition and other functions for analysis and processing, so that the bump damage on the surface of the detected cable is recognized, an alarm is given in time, and the device has the advantages of high detection efficiency, good detection effect and convenience in use, and can be fully applied to application scenes with large workload of large capital construction project detection.

Description

Technical Field

[0001] The invention belongs to the technical field of cable surface damage detection, and in particular relates to a cable surface protrusion damage detection system. Background Art

[0002] With the acceleration of my country's modernization process, the application of power equipment is becoming more and more extensive. Cables are an important power infrastructure; the quality of cables is directly related to the transmission effect of electricity. During the production or transportation of cables, some bulges or bumps often appear on the cables, which can easily cause cable short circuits, circuit breaks or leakage accidents. In some large-scale infrastructure projects, since the cables are very heavy, relying on manpower not only has low detection accuracy, but is also time-consuming and labor-intensive.

[0003] As a result, a Chinese invention patent with authorization announcement number CN108020182 B, "A cable protrusion damage detection device", appeared. Its purpose is to provide a cable protrusion damage detection device to solve the technical problem of detecting protrusions on the outer surface of the cable, including a control system, and a detection length adjustment system, a detection parallelism adjustment system and a cable flatness detection system electrically connected to the control system. Its beneficial effects are: the detection length adjustment system can realize the detection of cables of different lengths; the detection parallelism adjustment system can realize the cable clamping mechanism at both ends, and the clamping height of the two ends of the cable is equal, ensuring the accuracy of the cable flatness measurement system in measuring the measured cable; the cable flatness measurement system can detect the cable surface in all directions, ensuring the detection of cable surface protrusion faults.

[0004] However, since there are many cables and models used in large-scale infrastructure projects, all cables to be put into use need to be tested for safety reasons, which results in a large workload. However, the Chinese invention patent is unable to automatically and continuously test the cables, the testing work is not very convenient, the testing efficiency is low, and it is unable to cope with the large workload. In order to solve the above problems, it is necessary to develop a cable surface protrusion damage detection system. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a cable surface protrusion damage detection system with high detection efficiency, good detection effect and easy use, which can fully cope with application scenarios with large detection workload of large infrastructure projects.

[0006] The object of the present invention is achieved as follows: A cable surface protrusion damage detection system includes a cable conveying unit, an image acquisition unit, an auxiliary lighting unit, an acquired image processing unit, an image analysis unit, a data storage unit, an alarm unit and an operation terminal; The cable conveying unit is used for automatic and continuous conveying of the tested cable, and comprises a cable releasing device, a straightening device, a leading device and a collecting device which are arranged in sequence; The image acquisition unit is used for automatic and continuous acquisition of cable surface images, and includes a plurality of CCD cameras uniformly arranged around the outside of the tested cable, and the plurality of CCD cameras are arranged between the straightening device and the straightening device; The auxiliary lighting unit is used for auxiliary lighting when collecting cable surface images, and includes two annular light sources respectively arranged at the front and rear ends of the plurality of CCD cameras, and the annular light sources are sleeved on the outside of the tested cable; The collected image processing unit is used to process the original collected image of the cable surface and filter it according to the rules, and the processed image is sent to the image analysis unit; The image analysis unit is used to identify the image of the cable surface after treatment, and uses image recognition technology for the image of the cable surface after treatment to quickly identify the raised damage on the cable surface; The data storage unit is used for storing the original collected image, processed image and processed image recognition information of the cable surface; The alarm unit is used to respond to the identified cable surface protrusion damage and issue an alarm signal in time; The operation terminal is used for displaying and viewing the cable surface image and alarm information and sending system instructions, and is embedded with the acquisition image processing unit, the image analysis unit, the information storage unit and the alarm unit.

[0007] Preferably, the cable-releasing device comprises a support frame, and two parallel and symmetrical U-shaped grooves are provided at the upper end of the support frame, and the central axis directions of the two U-shaped grooves are arranged perpendicular to the cable-releasing direction. In addition to having the same specifications as the cable-releasing device, the collecting device is also provided with a collecting motor.

[0008] Preferably, the straightening device comprises a plurality of pairs of rubber rollers arranged in parallel up and down, the upper and lower spacing between each pair of the rubber rollers can be adjusted, a plurality of one-to-one corresponding drive motors are provided at the same end of the plurality of rubber rollers located on the upper or lower side, and the working mode of the plurality of drive motors is a synchronous working mode, the export device has the same specifications as the straightening device, but the working speed of the drive motor of the export device is slightly faster than the working speed of the drive motor of the straightening device.

[0009] Preferably, the middle part of each of the rubber rollers is provided with an annular groove of the same specification.

[0010] Preferably, the CCD camera has an automatic zoom function. After a plurality of the CCD cameras are evenly arranged around the outside of the cable under test, the surrounding shooting range formed by them should at least fully cover the outer diameter of the cable under test.

[0011] Preferably, the annular light strip of the annular light source adopts a plurality of evenly distributed LED point light sources.

[0012] Preferably, the collected image processing unit specifically uses a denoising technology and an enhancement technology to process the original collected image of the cable surface.

[0013] Preferably, the image recognition technology includes image freezing technology, fast image processing and pattern recognition technology.

[0014] Preferably, the alarm signal is an audible and visual alarm signal, which is implemented using a fully automatic audible and visual alarm.

[0015] Preferably, the operation terminal includes a computer and a mobile phone, and when viewing the cable surface image through the operation terminal, the image can be zoomed in and out for viewing.

[0016] Due to the adoption of the above technical solution, the beneficial effects of the present invention are: (1) The present invention adopts a cable conveying unit, an image acquisition unit, an auxiliary lighting unit, an image acquisition processing unit, an image analysis unit, a data storage unit, an alarm unit and an operation terminal, which can conveniently complete the detection of cable surface protrusion damage during the automatic and continuous conveying process of the tested cable, and the detection efficiency is high; (2) The present invention uses multiple CCD cameras evenly arranged around the tested cable to collect images covering the entire surface of the tested cable in a full range of 360 degrees, and the detection is comprehensive. At the same time, combined with the front and rear two ring light sources, sufficient light source can be provided for the surface image collection of the tested cable. The image acquisition quality is good, which is conducive to the subsequent image recognition work, thereby improving the detection effect; (3) The present invention adopts an image acquisition processing unit to process the original acquired image before sending it to the image analysis unit, which can further improve the quality of the acquired image and further improve the detection effect; (4) The present invention uses an alarm unit to send out an alarm signal in time to remind the staff that the tested cable has quality problems. At the same time, it uses a data storage unit and an operation terminal to facilitate the staff to check and operate on site and later, and is easy to use; In general, the present invention has the advantages of high detection efficiency, good detection effect, and easy use, and can fully cope with application scenarios with large detection workloads in large infrastructure projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a main structural schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the top view of the rubber roller and the driving motor of the present invention.

[0019] Figure 3 It is a side view structural schematic diagram of the CCD camera, annular light source and tested cable of the present invention.

[0020] In the figure: 1, support frame 2, U-shaped groove 3, rubber roller 31, annular groove 4, annular light source 5, CCD camera 6, operation terminal 7, image acquisition processing unit 8, image analysis unit 9, information storage unit 10, alarm unit 101, full-automatic sound and light alarm 11, tested cable 12, drive motor. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the present invention provides a cable surface protrusion damage detection system, including a cable transmission unit, an image acquisition unit, an auxiliary lighting unit, an image acquisition processing unit 7, an image analysis unit 8, a data storage unit 9, an alarm unit 10 and an operation terminal 6.

[0023] The cable conveying unit is used for automatic and continuous conveyance of the tested cable 11, and includes a cable releasing device, a straightening device, a lead-out device and a collecting device which are arranged in sequence.

[0024] The cable-releasing device comprises a support frame 1, and two parallel and symmetrical U-shaped grooves 2 are arranged at the upper end of the support frame 1. The central axis direction of the two U-shaped grooves 2 is arranged perpendicular to the cable-releasing direction. When in use, the cable to be tested is rolled up on the support frame 1 through the two U-shaped grooves 2, and then naturally rotates along with the cable to be tested 11 during the cable-releasing process of the cable to be tested 11, and the cable-releasing work is completed during the rotation process.

[0025] In addition to having the same specifications as the cable-releasing device, the collecting device is also equipped with a collecting motor (not shown in the figure). The collecting motor is used to drive the collecting drum to rotate. When in use, the collecting drum is mounted on the support frame 1 through two U-shaped grooves 2, and then the collecting drum rotates under the drive of the collecting motor. The collecting work is completed during the rotation process. In order to successfully complete the collecting work during operation, the working speed of the collecting motor is consistent with the working speed of the driving motor 12 of the exporting device, that is, the cable conveying speed exported by the exporting device is equal to the cable collecting speed of the collecting drum.

[0026] The collecting motor drives the rotating shafts at both ends of the collecting drum through the gear, rack transmission mechanism or belt, pulley transmission mechanism of the prior art, and the rotating shaft rotates within the U-shaped groove 2, thereby driving the collecting drum to rotate and carry out the collecting work.

[0027] The straightening device includes a plurality of pairs of rubber rollers 3 arranged in parallel up and down, and the upper and lower spacing between each pair of rubber rollers 3 can be adjusted by synchronously adjusting the plurality of rubber rollers 3 located on the upper side of each pair of rubber rollers 3, and then a plurality of one-to-one corresponding drive motors 12 are provided at the same end of the plurality of rubber rollers 3 located on the lower side, and the working mode of the plurality of drive motors 12 is a synchronous working mode, so that the conveying speed of the measured cable 11 is consistent throughout the whole process and remains stable during the conveying process. The export device has the same specifications as the straightening device, but the working speed of the drive motor 12 of the export device is slightly faster than the working speed of the drive motor 12 of the straightening device, so that the measured cable 11 remains straight between the straightening device and the export device, that is, the measured cable 11 remains straight during the image acquisition process, and the image acquisition effect is good.

[0028] The middle of the rubber roller 3 is provided with an annular groove 31 of the same specification, which is used to limit the measured cable 11 during the conveying process, prevent the measured cable 11 from shaking randomly during the conveying process, and better maintain a straight state.

[0029] The image acquisition unit is used for automatic and continuous acquisition of cable surface images, and includes a plurality of CCD cameras 5 evenly arranged around the outside of the tested cable 11, and the plurality of CCD cameras 5 are arranged between the straightening device and the straightening device.

[0030] The CCD camera 5 has an automatic zoom function. After multiple CCD cameras 5 are evenly arranged around the outside of the cable 11 under test, the surrounding shooting range formed by them should at least fully cover the outer diameter of the cable 11 under test, so that the image of the cable 11 under test can be completely collected and the detection effect is good.

[0031] Among them, the auxiliary lighting unit is used for auxiliary lighting when collecting cable surface images, including two annular light sources 4 respectively arranged at the front and rear ends of multiple CCD cameras 5. The annular light sources 4 are arranged on the outside of the cable under test 11. The two annular light sources 4 located on the outside of the cable under test 11 can provide it with a uniform bright field lighting source, which is convenient for image collection.

[0032] The annular light strip of the annular light source 4 adopts a plurality of evenly distributed LED point light sources. The LED point light source is energy-saving and has high brightness. It can provide a uniform annular light for image acquisition, making it easy to acquire clear and high-quality cable surface images.

[0033] Among them, the collected image processing unit 7 is used to process the original collected image of the cable surface and filter it according to the rules. The processed image is sent to the image analysis unit, which specifically uses denoising technology and enhancement technology to process the original collected image of the cable surface.

[0034] Among them, the image analysis unit 8 is used to identify the image of the cable surface after treatment. Image recognition technology is used for the processed cable surface image to quickly identify the raised damage on the cable surface. The image recognition technology can adopt existing image freezing technology, fast image processing and pattern recognition technology.

[0035] The data storage unit 9 is used for storing the original collected image, processed image and processed image recognition information of the cable surface.

[0036] Among them, the alarm unit 10 is used to respond to the identified cable surface protrusion damage and send out an alarm signal in time. The alarm signal is an audible and visual alarm signal, which can be implemented by a fully automatic audible and visual alarm 101.

[0037] Among them, the operation terminal 6 is used for displaying and viewing the cable surface image and alarm information and sending system instructions, and has an embedded software operating system consisting of an image acquisition processing unit 7, an image analysis unit 8, an information storage unit 9 and an alarm unit 10; the operation terminal 6 is specifically a computer and a mobile phone, and the cable surface image can be viewed through a computer or a mobile phone, and the image can be enlarged and reduced for more convenient viewing.

[0038] When the present invention is actually used, the two ends of the cable roll to be tested are set in the two U-shaped grooves 2 of the cable-releasing device, and the two ends of the tested cable roll are set in the two U-shaped grooves 2 of the collecting device. The cable to be tested is automatically and continuously transported from the cable-releasing device to the collecting device through the straightening device and the lead-out device. During the transportation process, the CCD camera 5 captures images of the cable to be tested, and the captured image data is sent to the operation terminal 6. The software operating system embedded in the operation terminal 6 analyzes and processes the captured image data, and promptly sends an alarm signal when a raised damage on the surface of the cable to be tested is identified; during image acquisition, good lighting is provided by two annular light sources 4 located on both sides of the CCD camera 5.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the specific implementation modes of the present invention can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A cable surface protrusion damage detection system, characterized in that: It includes a cable transmission unit, an image acquisition unit, an auxiliary lighting unit, an image acquisition processing unit, an image analysis unit, a data storage unit, an alarm unit and an operation terminal; The cable conveying unit is used for automatic and continuous conveying of the tested cable, and comprises a cable releasing device, a straightening device, a leading device and a collecting device which are arranged in sequence; The image acquisition unit is used for automatic and continuous acquisition of cable surface images, and includes a plurality of CCD cameras uniformly arranged around the outside of the tested cable, and the plurality of CCD cameras are arranged between the straightening device and the straightening device; The auxiliary lighting unit is used for auxiliary lighting when collecting cable surface images, and includes two annular light sources respectively arranged at the front and rear ends of the plurality of CCD cameras, and the annular light sources are sleeved on the outside of the tested cable; The collected image processing unit is used to process the original collected image of the cable surface and filter it according to the rules, and the processed image is sent to the image analysis unit; The image analysis unit is used to identify the image of the cable surface after treatment, and uses image recognition technology for the image of the cable surface after treatment to quickly identify the raised damage on the cable surface; The data storage unit is used for storing the original collected image, processed image and processed image recognition information of the cable surface; The alarm unit is used to respond to the identified cable surface protrusion damage and issue an alarm signal in time; The operation terminal is used for displaying and viewing the cable surface image and alarm information and sending system instructions, and is embedded with the acquisition image processing unit, the image analysis unit, the information storage unit and the alarm unit.

2. The cable surface protrusion damage detection system according to claim 1 is characterized in that: The cable-releasing device comprises a support frame, and two parallel and symmetrical U-shaped grooves are provided at the upper end of the support frame. The central axis directions of the two U-shaped grooves are arranged perpendicular to the cable-releasing direction. The collecting device has the same specifications as the cable-releasing device, and is also equipped with a collecting motor.

3. The cable surface protrusion damage detection system according to claim 1, characterized in that: The straightening device includes multiple pairs of rubber rollers arranged in parallel up and down, the upper and lower spacing between each pair of rubber rollers can be adjusted, and multiple one-to-one corresponding drive motors are provided at the same end of the multiple rubber rollers located on the upper or lower side, and the multiple drive motors work in a synchronous working mode. The export device has the same specifications as the straightening device, but the working speed of the drive motor of the export device is slightly faster than the working speed of the drive motor of the straightening device.

4. The cable surface protrusion damage detection system according to claim 3 is characterized in that: The middle parts of the rubber rollers are all provided with annular grooves of the same specifications.

5. The cable surface protrusion damage detection system according to claim 1, characterized in that: The CCD camera has an automatic zoom function. After a plurality of the CCD cameras are evenly arranged around the outside of the cable under test, the surrounding shooting range formed by them should at least fully cover the outer diameter of the cable under test.

6. The cable surface protrusion damage detection system according to claim 1, characterized in that: The annular light strip of the annular light source adopts a plurality of evenly distributed LED point light sources.

7. The cable surface protrusion damage detection system according to claim 1, characterized in that: The collected image processing unit specifically processes the original collected image of the cable surface by using a denoising technology and an enhancement technology.

8. The cable surface protrusion damage detection system according to claim 1, characterized in that: The image recognition technology includes image freezing technology, fast image processing and pattern recognition technology.

9. The cable surface protrusion damage detection system according to claim 1, characterized in that: The alarm signal is an audible and visual alarm signal, which is implemented by a fully automatic audible and visual alarm.

10. The cable surface protrusion damage detection system according to claim 1, characterized in that: The operation terminal includes a computer and a mobile phone. When viewing the cable surface image through the operation terminal, the image can be zoomed in and out for viewing.

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