WO2021052022A1

WO2021052022A1 - Electrical cable vibration detection method and related product

Info

Publication number: WO2021052022A1
Application number: PCT/CN2020/105620
Authority: WO
Inventors: 高风波
Original assignee: 深圳市豪视智能科技有限公司
Priority date: 2019-04-26
Filing date: 2020-07-29
Publication date: 2021-03-25
Also published as: CN110617873B; CN110617873A

Abstract

An electrical cable vibration detection method, applied in a vibration detection device (100). The vibration detection device (100) comprises a camera apparatus (110) and an anemometer (120). The method comprises: the vibration detection device (100) captures an original video of an electrical cable to be tested (130) by means of the camera apparatus (110), and processes the original vibration video according to a preset video processing policy to obtain a target video having a motion amplification effect, the motion amplification effect indicates that the area where said electrical cable moves being amplified in the target video (S201); the vibration detection device (100) then determines reference vibration data of said electrical cable (130) according to the target video (S202); obtain wind speed information by means of the anemometer (120) (S203); determine whether the vibration state of said electrical cable (130) is abnormal according to the wind speed information and the reference vibration data (S204); and if it is determined that the vibration state of said electrical cable (130) is abnormal, output preset alarm information (S205). The method facilitates improving the convenience and high-efficiency of electrical cable vibration detection. Also disclosed is a vibration detection apparatus (600) for an electrical cable, a vibration detection device, and a computer readable storage medium.

Description

Cable vibration detection method and related products

Technical field

This application relates to the technical field of vibration detection equipment, in particular to a vibration detection method for cables and related products.

Background technique

In recent years, power cables have been widely used in my country's power grids, and their usage has increased dramatically. Cable lines or single or multiple cables are laid in various ways such as direct burying, pipelines, trenches, tunnels, and corridors. In the daily maintenance of the cable line, it is often encountered that the geographic information radiated by the cable is incomplete or the cable nameplate is not clear. At this time, in order to ensure the safety of the operator, it is necessary to detect the live state of the cable. With the continuous development of the power industry, the number of high-voltage cables is rising sharply. Faced with the ever-increasing scale of lines, the corresponding operation and maintenance personnel for transmission network cables are very limited. In terms of preventing external damage to transmission network cables and pre-testing and repairing the outer sheath of the cable, it takes up a lot of manpower and material resources, and the operation and maintenance situation is very severe. In addition, as the power quality requirements of the power grid are getting higher and higher, the power supply reliability assessment standard is overweight, the cable maintenance indicators are getting less and less, and the troubleshooting time is getting shorter and shorter. This pair can quickly locate the cable vibration state after abnormal cable vibration occurs. , The prevention of circuit failure puts forward higher requirements.

Summary of the invention

The embodiments of the present application provide a method for detecting cable vibration and related products, in order to improve the efficiency and convenience of cable vibration detection.

In a first aspect, an embodiment of the present application provides a vibration detection method for a cable, which is applied to a vibration detection device, the vibration detection device includes a camera device and an anemometer; the method includes:

The original video of the cable to be tested is captured by a camera device, and the original vibration video is processed according to a preset video processing strategy to obtain a target video with a motion amplification effect. The motion amplification effect means that the motion area of the cable under test is The target video has been enlarged and processed;

Determine the reference vibration data of the cable to be tested according to the target video;

Obtain wind speed information through anemometer;

Determining whether the vibration state of the cable to be tested is abnormal according to the wind speed information and the reference vibration data;

If it is determined that the vibration state of the cable to be tested is abnormal, a preset alarm message is output.

In the second aspect, the embodiments of the present application provide a cable vibration detection device, which is applied to vibration detection equipment. The vibration detection device includes a camera and an anemometer; the cable vibration detection device includes a processing unit, a communication unit, and a storage device. Unit, where

The processing unit is configured to shoot the original video of the cable to be tested through a camera device, and process the original vibration video according to a preset video processing strategy to obtain a target video with a motion amplification effect, and the motion amplification effect refers to the to-be-tested The area where the cable moves is amplified in the target video; and used to determine the reference vibration data of the cable to be tested according to the target video; and used to obtain wind speed information through an anemometer; and For determining whether the vibration state of the cable under test is abnormal according to the wind speed information and the reference vibration data; and for outputting preset alarm information if it is determined that the vibration state of the cable under test is abnormal.

In a third aspect, an embodiment of the present application provides a vibration detection device, including a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and are configured by the above Executed by a processor, and the foregoing program includes instructions for executing steps in any method in the first aspect of the embodiments of the present application.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the above-mentioned computer-readable storage medium stores a computer program for electronic data exchange, wherein the above-mentioned computer program enables a computer to execute Part or all of the steps described in any method of the two aspects.

In a fifth aspect, the embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute as implemented in this application. For example, part or all of the steps described in any method of the second aspect. The computer program product may be a software installation package.

It can be seen that, in the embodiment of the present application, a method for detecting vibration of a cable is provided, which is applied to a vibration detecting device, the vibration detecting device includes a camera device and an anemometer; the method includes: the vibration detecting device uses a camera device to shoot The original video of the cable to be tested is processed according to a preset video processing strategy to obtain a target video with a motion amplification effect, where the motion amplification effect refers to the area where the motion of the cable under test occurs in the The target video is amplified; the vibration detection device then determines the reference vibration data of the cable to be tested according to the target video; at the same time obtains wind speed information through an anemometer; determines according to the wind speed information and the reference vibration data Whether the vibration state of the cable to be tested is abnormal; if it is determined that the vibration state of the cable to be tested is abnormal, a preset alarm message is output. It can be seen that the original video is processed by the vibration detection device according to the preset video processing strategy, and the processed target video and wind speed information are used to determine whether the cable has abnormal vibration, which is beneficial to improve the convenience and efficiency of cable vibration detection.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a schematic diagram of a vibration detection of a cable provided by an embodiment of the present application;

2A is a schematic flowchart of a method for detecting vibration of a cable provided by an embodiment of the present application;

FIG. 2B is a schematic diagram of a vibration situation of a cable provided by an embodiment of the present application;

2C is a schematic diagram of vibration of another cable provided by an embodiment of the present application;

FIG. 2D is a schematic diagram of vibration of another cable provided by an embodiment of the present application;

2E is a schematic diagram of the vibration of another cable provided by an embodiment of the present application;

FIG. 3 is a schematic flowchart of another cable vibration detection method provided by an embodiment of the present application;

4 is a schematic flowchart of another cable vibration detection method provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a vibration detection device provided by an embodiment of the present application;

Fig. 6 is a block diagram of functional units of a cable vibration detection device provided by an embodiment of the present application.

detailed description

In order to enable those skilled in the art to better understand the solutions of the application, the technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The terms "first" and "second" in the specification and claims of the present application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes unlisted steps or units, or optionally also includes Other steps or units inherent to these processes, methods, products or equipment.

Reference to "embodiments" herein means that a specific feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art clearly and implicitly understand that the embodiments described herein can be combined with other embodiments.

The vibration detection devices involved in the embodiments of this application may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of user equipment ( User Equipment (UE), mobile station (Mobile Station, MS), terminal device (terminal device), etc.

The following describes the embodiments of the present application in detail.

The vibration detection method involved in the embodiment of this application belongs to a non-contact vibration detection method. As shown in FIG. 1, a cable 130 to be tested, a vibration detection device 100 may include a camera 110 and an anemometer 120; The camera device 110 collects the original video of the vibration of the cable 130 to be tested, obtains wind speed information through the anemometer 120, and determines the vibration state of the cable 130 to be tested based on the detection result and the original video. The above method can avoid the failure due to special circumstances. The problem of not being able to obtain measurement point data caused by contact with the measured object.

Please refer to FIG. 2A. FIG. 2A is a schematic flowchart of a vibration detection method for a cable provided by an embodiment of the present application, which is applied to a vibration detection device, the vibration detection device includes a camera device and an anemometer; the method includes:

S201: The vibration detection device shoots the original video of the cable to be tested through the camera device, and processes the original vibration video according to a preset video processing strategy to obtain a target video with a motion amplification effect;

Wherein, the motion amplification effect means that the motion area of the cable to be tested is amplified in the target video.

S202: The vibration detection device determines reference vibration data of the cable to be tested according to the target video;

Wherein, the reference vibration data includes at least one of the following: vibration amplitude, vibration frequency, vibration phase, and time-domain waveform.

S203: The vibration detection device obtains wind speed information through an anemometer;

Wherein, the wind speed information includes real-time wind speed magnitude and real-time wind speed direction.

S204: The vibration detection device determines whether the vibration state of the cable to be tested is abnormal according to the wind speed information and the reference vibration data;

Wherein, the determining whether the vibration state of the cable to be tested is abnormal includes using the wind speed information as a query identifier, querying a preset mapping relationship, and obtaining limit vibration data corresponding to the wind speed information, and the mapping relationship includes the wind speed information And the corresponding relationship between the limit vibration data.

S205: If the vibration detection device determines that the vibration state of the cable to be tested is abnormal, output preset alarm information.

In a possible example, the vibration detection device shoots the original video of the cable to be tested through a camera device, and processes the original vibration video according to a preset video processing strategy to obtain a target video with a motion amplification effect, including: the vibration detection device passes The camera device photographs the original video file of the cable to be tested, performs color space conversion processing on the original video file, and obtains the processed first video file; The brightness information of the first video file is Fourier transformed, the brightness change in the time domain is converted into the phase change in the frequency domain, and the processed second video file is obtained; the vibration detection device is directed to the obtained second video The file is subjected to motion amplification processing to obtain a processed third video file; the vibration detection device determines that the third video file is a target video with a motion amplification effect according to the acquired third video file.

Wherein, the photographing the original video file of the cable to be tested by the camera device, performing color space conversion processing on the original video file, and obtaining the processed first video file includes: obtaining the sequence frames of the original video file, according to The RGB color space algorithm acquires the red, green, and blue color channels of the sequence frame; converts the red, green, and blue color channels into the luminance signal of the YIQ color space algorithm, color signal one, color signal two; The conversion relationship between RGB and YIQ is:

Y＝0.299*R+0.587*G+0.114*B;

I=0.596*R–0.275*G–0.321*B;

Q=0.212*R-0.523*G+0.311*B.

Wherein, performing motion amplification processing for the acquired second video file to obtain the processed third video file further includes: performing spatial pyramid decomposition of the video sequence to obtain videos with different spatial resolutions; The images of different scales are processed by time-domain band-pass filtering to obtain several frequency bands of interest; the signal after band-pass filtering is linearly amplified and added to the original information.

Wherein, performing motion amplification processing for the acquired second video file to acquire the processed third video file also includes: converting the input video into the YIQ color space, keeping the I and Q channels unchanged, Perform FFT operation on Y channel; perform complex manipulation of gold tower spatial decomposition on Y channel image after FFT transformation. Perform time-domain band-pass filtering on images of different scales decomposed in the Y-channel spatial domain; amplify the motion information of interest after time-domain band-pass filtering; perform complex manipulation pyramid reconstruction on the motion information of interest to obtain the amplified Y channel Image; Finally, the reconstructed Y channel image is added to the original I and Q channel images, and then converted into RGB color space to get the output video.

It can be seen that in this example, the vibration detection device photographs the original video file of the cable to be tested through the camera device, performs color space conversion processing on the original video file, obtains the processed first video file, and then according to the obtained first video file. A video file, Fourier transform is performed on the brightness information of the first video file, the brightness change in the time domain is converted into the phase change in the frequency domain, the processed second video file is obtained, and then the obtained first video file is Second, the video file is subjected to motion amplification processing to obtain a processed third video file, and finally the vibration detection device determines that the third video file is a target video with motion amplification effect according to the acquired third video file ; It is beneficial to more conveniently and accurately determine the reference vibration data of the cable to be tested, thereby further determining the vibration state of the cable to be tested, which is beneficial to improve the efficiency and convenience of the vibration detection of the cable.

In a possible example, the vibration detection device performs motion amplification processing on the acquired second video file, and obtains the processed third video file, including: the vibration detection device performs motion amplification processing on the second video file. Framing processing to obtain a first image sequence; the vibration detection device calibrates the first image sequence to obtain a calibration image; the vibration detection device performs color space conversion processing on the calibration image to determine a converted image; The vibration detection device divides the converted image into a cable image area and a background image area; the vibration detection device acquires a first feature point in the cable image area, and tracks the movement track of the first feature point over time , Amplify the motion amplitude of the motion track to determine a second feature point; the vibration detection device determines a second image sequence based on the converted image and the second feature point; the vibration detection device determines a second image sequence based on the second feature point; The image sequence determines the third video file.

Wherein, the determining a second image sequence according to the converted image and the second feature point includes correspondingly fusing the second feature point into the converted image to obtain a target image, and determining according to the target image The second image sequence.

Wherein, after the first feature point in the cable image area is acquired, the method further includes identifying, matching, clustering and optical flow field interpolation on the first feature point.

It can be seen that, in this example, the vibration detection device performs framing processing on the second video file to obtain a first image sequence, and then calibrate the first image sequence to obtain a calibration image, and then color the calibration image Spatial conversion processing, determining the conversion image, further dividing the conversion image into a cable image area and a background image area, acquiring the first feature point in the cable image area, and tracking the movement trajectory of the first feature point over time , Amplify the motion amplitude of the motion track, determine a second feature point, determine a second image sequence according to the converted image and the second feature point, and finally determine the third image sequence according to the second image sequence Video files; help prevent the vibration of irrelevant objects such as the enlarged background, so as to focus on the vibration amplification processing of the cable to be tested.

In a possible example, the vibration detection device determining whether the vibration state of the cable to be tested is abnormal according to the wind speed information and the reference vibration data includes: the vibration detection device determines the real-time wind speed according to the wind speed information The vibration detection device determines the real-time limit vibration amplitude of the cable under test according to the real-time wind speed and the preset constraint strategy; the vibration detection device determines the cable under test according to the reference vibration data Reference vibration amplitude; when the vibration detection device determines that the reference vibration amplitude is greater than the real-time limit vibration amplitude, it determines that the vibration state of the cable to be tested is abnormal.

Wherein, the preset restriction strategy includes the corresponding relationship between the wind speed and the limit vibration amplitude of the cable to be tested.

In specific implementation, as shown in Fig. 2B, L1 and L2 are the positions where the cable fixing device of the electric pole exists for the cable to be tested, and the vibration detection device is classified as a four-level wind according to the wind speed information, and according to a preset constraint strategy , Determine that the limit vibration amplitude of the cable under test L under the four-level wind constraint is M; when the vibration detection device determines that the reference vibration amplitude N is greater than the limit vibration amplitude M, determine the vibration state of the cable under test abnormal.

It can be seen that in this example, the vibration detection device determines the real-time wind speed according to the wind speed information; the vibration detection device determines the real-time limit vibration amplitude of the cable to be tested according to the real-time wind speed and a preset constraint strategy; The vibration detection device determines the reference vibration amplitude of the cable to be tested according to the reference vibration data; when the vibration detection device determines that the reference vibration amplitude is greater than the real-time limit vibration amplitude, determines the cable to be tested The vibration state is abnormal; it is conducive to more efficiently and quickly determine the vibration state of the cable to be tested. When the vibration state of the cable to be tested is abnormal, quickly take corresponding measures to avoid adverse consequences and losses due to abnormal vibration .

In a possible example, if the vibration detection device determines that the vibration state of the cable to be tested is abnormal, before outputting preset alarm information, the method further includes: the vibration detection device determines according to the reference vibration data The reference vibration amplitude and initial vibration phase of the cable to be tested; the vibration detection device determines the vibration condition of the cable to be tested according to the reference vibration amplitude and the initial vibration phase.

It can be seen that, in this example, the vibration detection device determines the reference vibration amplitude and initial vibration phase of the cable to be tested according to the reference vibration data; the vibration detection device determines the reference vibration amplitude and the initial vibration phase according to the reference vibration amplitude and the initial vibration phase. The description of the vibration condition of the cable to be tested is beneficial to improve the efficiency and accuracy of determining the vibration condition of the cable to be tested, and to judge the cable vibration condition in diversified different situations.

In a possible example, the vibration detection device determines the vibration of the cable to be tested according to the reference vibration amplitude and the initial vibration phase, including: if the vibration detection device determines that the reference vibration amplitude is determined by the The position of the two ends of the cable to be tested decreases toward the middle position, and the initial vibration phase is located at the two ends of the cable to be tested; it is determined that the cable fixing device of the wire pole is loose in the cable to be tested; If the vibration detection device determines that the reference vibration amplitude increases from the two ends of the cable under test to the middle position, and the initial vibration phase is located in the middle position of the cable under test; The stretching degree of the cable is less than the first stretching threshold; if the vibration detection device determines that the reference vibration amplitude decreases from the local position of the cable to be tested to the two end positions, and the initial vibration phase is located at the According to the local position of the cable to be tested, it is determined that there is a load hovering on the cable to be tested.

Wherein, the positions of both ends include the cable fixing positions of the telegraph poles at both ends in the third video file of the cable to be tested.

Wherein, the intermediate position includes taking the two ends of the cable to be tested as end points, and determining the midpoint position of the cable to be tested as the intermediate position.

Wherein, the load includes small birds and raised waste.

In specific implementation, as shown in Figure 2C, Figure 2C is a schematic diagram of the vibration of the cable X. The vibration detection device determines that the vibration amplitude of the reference vibration data decreases from the two ends of the cable to be tested to the middle position, and at the same time, It is determined that the initial vibration phase of the cable X is at the positions X1 and X2 at the two ends of the cable to be tested; the vibration detection equipment determines that the cable fixing device of the wire pole is loosened in the cable to be tested, so the wire of the wire pole The position where the cable fixing device is located, that is, the positions X1 and X2 at both ends of the cable X have a larger vibration amplitude.

In specific implementation, as shown in Figure 2D, Figure 2D is a schematic diagram of the vibration of the cable Y. The vibration detection device determines that the vibration amplitude of the reference vibration data increases from the two ends of the cable to be tested to the middle position, and determines at the same time The initial vibration phase of the cable Y is at the middle position Y1 of the cable to be tested; the vibration detection device determines that because the cable Y itself is too small to be stretched, there is a large stretch redundancy, which causes its own jitter. Therefore, the middle position Y1 of the cable Y has a larger vibration amplitude.

In specific implementation, as shown in FIG. 2E, FIG. 2E is a schematic diagram of the vibration of the cable Z. The vibration detection device determines that the vibration amplitude of the reference vibration data decreases from the random position Z1 of the cable to be tested to the positions of both ends; The vibration detection device determines that the initial vibration phase of the reference vibration data is at Z1 of the cable to be tested; the vibration detection device determines that there is a load hovering on the cable Z at Z1 of the cable to be tested, and thus appears Vibration in Figure 2E.

It can be seen that, in this example, if the vibration detection device determines that the reference vibration amplitude decreases from the two ends of the cable under test to the middle position, and the initial vibration phase is located at the two ends of the cable under test; then It is determined that the cable fixing device of the electric pole is loose in the cable under test; if the vibration detection equipment determines that the reference vibration amplitude increases from the two ends of the cable under test to the middle position, and the The initial vibration phase is at the middle position of the cable to be tested; it is determined that the degree of stretch of the cable to be tested is less than the first stretch threshold; if the vibration detection device determines that the reference vibration amplitude is determined by the cable to be tested The local position of the cable decreases toward the two ends, and the initial vibration phase is located at the local position of the cable to be tested, it is determined that there is a load hovering on the cable to be tested; considering that there are diversified reasons for the vibration of the cable Circumstances are conducive to improving the determination of the cable vibration state caused by diversified reasons in different situations, and it is conducive to improving the accuracy and convenience of the vibration detection of the cable to be tested.

In a possible example, if the vibration detection device determines that the vibration state of the cable to be tested is abnormal, it outputs preset alarm information, including: if the vibration detection device determines that the cable to be tested has a cable of a telegraph pole If the fixing device is loose, the first alarm information is output; if the vibration detection device determines that the stretch of the cable to be tested is less than the first stretch threshold, the second alarm information is output; the vibration detection device If it is determined that there is a load hovering on the cable to be tested, the third alarm information is output.

Wherein, the first alarm information includes information showing the fixing state of the cable fixing device.

Wherein, the second alarm information includes displaying the shape information of the cable to be tested.

Wherein, the third alarm information includes display information of the shape of the load.

It can be seen that, in this example, if the vibration detection device determines that the cable under test is loose in the cable fixing device of the pole, it outputs the first alarm message; if the vibration detection device determines that the cable under test is If the degree of stretch is less than the first stretch threshold, the second alarm information will be output; if the vibration detection device determines that there is a load hovering on the cable to be tested, the third alarm information will be output; it is helpful to help the staff to receive The specific abnormal condition of the cable to be tested can be judged more quickly when alarming information.

Consistent with the embodiment shown in FIG. 2A, please refer to FIG. 3. FIG. 3 is a schematic flowchart of a cable vibration detection method provided by an embodiment of the present application, which is applied to a vibration detection device, and the vibration detection device includes a camera. Device and anemometer; as shown in the figure, the vibration detection method of this cable includes:

S301: The vibration detection device photographs the original video file of the cable to be tested through the camera device, performs color space conversion processing on the original video file, and obtains the processed first video file;

S302: The vibration detection device performs Fourier transform on the brightness information of the first video file according to the acquired first video file, and converts the brightness change in the time domain into the phase change in the frequency domain, and obtains and processes the brightness information. 'S second video file;

S303: The vibration detection device performs motion amplification processing on the acquired second video file, and acquires a processed third video file;

S304: The vibration detection device determines, according to the acquired third video file, that the third video file is a target video with a motion amplification effect;

S305: The vibration detection device determines reference vibration data of the cable to be tested according to the target video;

S306: The vibration detection device obtains wind speed information through an anemometer, where the wind speed information includes real-time wind speed magnitude and real-time wind speed direction;

S307: The vibration detection device determines whether the vibration state of the cable to be tested is abnormal according to the wind speed information and the reference vibration data;

S308: If the vibration detection device determines that the vibration state of the cable to be tested is abnormal, it outputs preset alarm information.

In addition, the vibration detection equipment photographs the original video file of the cable to be tested through the camera device, performs color space conversion processing on the original video file, obtains the processed first video file, and then according to the obtained first video file, Perform a Fourier transform on the brightness information of the first video file, convert the brightness change in the time domain into a phase change in the frequency domain, obtain a processed second video file, and then for the obtained second video file, Perform motion amplification processing to obtain a processed third video file. Finally, the vibration detection device determines that the third video file is a target video with motion amplification effect according to the acquired third video file; Conveniently and accurately determine the reference vibration data of the cable to be tested, so as to further determine the vibration state of the cable to be tested, which is beneficial to improve the efficiency and convenience of the vibration detection of the cable.

Consistent with the embodiment shown in FIG. 2A, please refer to FIG. 4. FIG. 4 is a schematic flowchart of a cable vibration detection method provided by an embodiment of the present application, which is applied to a vibration detection device, and the vibration detection device includes a camera. Device and anemometer; as shown in the figure, the vibration detection method of this cable includes:

S401: The vibration detection equipment shoots the original video of the cable to be tested through the camera device, and processes the original vibration video according to a preset video processing strategy to obtain a target video with a motion amplification effect;

S402: The vibration detection device determines reference vibration data of the cable to be tested according to the target video;

S403, the vibration detection device obtains wind speed information through an anemometer;

S404: The vibration detection device determines the real-time wind speed according to the wind speed information;

S405: The vibration detection device determines the real-time limit vibration amplitude of the cable to be tested according to the real-time wind speed and a preset constraint strategy;

S406: The vibration detection device determines the reference vibration amplitude of the cable to be tested according to the reference vibration data;

S407: The vibration detection device determines that the vibration state of the cable to be tested is abnormal when it is determined that the reference vibration amplitude is greater than the real-time limit vibration amplitude;

S408: If the vibration detection device determines that the vibration state of the cable to be tested is abnormal, output preset alarm information.

In addition, the vibration detection device determines the real-time wind speed according to the wind speed information; the vibration detection device determines the real-time limit vibration amplitude of the cable to be tested according to the real-time wind speed and a preset constraint strategy; the vibration detection The device determines the reference vibration amplitude of the cable under test according to the reference vibration data; when the vibration detection device determines that the reference vibration amplitude is greater than the real-time limit vibration amplitude, it determines that the vibration state of the cable under test is abnormal ; Conducive to more efficient and rapid determination of the vibration state of the cable to be tested, when the vibration state of the cable to be tested is abnormal, quickly take corresponding measures to avoid adverse consequences and losses due to abnormal vibration.

Consistent with the embodiments shown in FIGS. 2A, 3, and 4, please refer to FIG. 5. FIG. 5 is a schematic structural diagram of a vibration detection device 500 provided by an embodiment of the present application. As shown in the figure, the vibration The detection device 500 includes an application processor 510, a memory 520, a communication interface 530, and one or more programs 521, where the one or more programs 521 are stored in the memory 520 and configured by the application processor 510. Execution, the one or more programs 521 include instructions for executing the following steps;

Obtain wind speed information through an anemometer, where the wind speed information includes real-time wind speed magnitude and real-time wind speed direction;

In a possible example, the original video of the cable to be tested is captured by the camera device, and the original vibration video is processed according to a preset video processing strategy to obtain a target video with a motion amplification effect, and the instructions in the program are specifically used for Perform the following operations: shoot the original video file of the cable to be tested with the camera device, perform color space conversion processing on the original video file, and obtain the processed first video file; The brightness information of the first video file is subjected to Fourier transform, the brightness change in the time domain is converted into the phase change in the frequency domain, and the processed second video file is obtained; for the obtained second video file, motion amplification is performed Processing, acquiring a processed third video file; according to the acquired third video file, determining that the third video file is a target video with a motion amplification effect.

In a possible example, the motion amplification process is performed on the obtained second video file to obtain the processed third video file, and the instructions in the program are specifically used to perform the following operations: Perform framing processing on the second video file to obtain a first image sequence; perform calibration on the first image sequence to obtain a calibration image; perform color space conversion processing on the calibration image to determine a converted image; divide the converted image Are the cable image area and the background image area; acquire the first feature point in the cable image area, track the movement trajectory of the first feature point over time, amplify the movement amplitude of the movement trajectory, and determine the second feature point ; According to the converted image and the second feature point, determine a second image sequence; according to the second image sequence, determine the third video file.

In a possible example, it is determined whether the vibration state of the cable to be tested is abnormal according to the wind speed information and the reference vibration data, and the instructions in the program are specifically used to perform the following operations: according to the wind speed information , Determine the real-time wind speed; according to the real-time wind speed and a preset constraint strategy, determine the real-time limit vibration amplitude of the cable to be tested, wherein the preset constraint strategy includes the wind speed and the cable to be tested The corresponding relationship between the limit vibration amplitude of the; according to the reference vibration data, determine the reference vibration amplitude of the cable to be tested; when it is determined that the reference vibration amplitude is greater than the real-time limit vibration amplitude, determine the cable to be tested The vibration state is abnormal.

In a possible example, if it is determined that the vibration state of the cable to be tested is abnormal, before outputting the preset alarm information, the method further uses the instructions in the program to perform the following operations: Determine the reference vibration amplitude and initial vibration phase of the cable under test by referring to the vibration data; determine the vibration condition of the cable under test according to the reference vibration amplitude and the initial vibration phase.

In a possible example, the vibration condition of the cable to be tested is determined according to the reference vibration amplitude and the initial vibration phase, and the instructions in the program are specifically used to perform the following operations: if the reference is determined The vibration amplitude decreases from the positions of the two ends of the cable under test to the middle position, and the initial vibration phase is located at the two ends of the cable under test; it is determined that the cable under test has the cable fixing device of the pole Loosening occurs; if it is determined that the reference vibration amplitude increases from the positions of the two ends of the cable under test to the middle position, and the initial vibration phase is located in the middle position of the cable under test; then it is determined that the test cable is at the middle position. The stretch of the cable is less than the first stretch threshold; if it is determined that the reference vibration amplitude decreases from the local position of the cable to be tested to the two ends, and the initial vibration phase is located in the local of the cable to be tested Position, it is determined that there is a load hovering on the cable to be tested.

In a possible example, if it is determined that the vibration state of the cable to be tested is abnormal, a preset alarm message is output, and the instructions in the program are specifically used to perform the following operations: if it is determined that the cable to be tested exists If the cable fixing device of the telegraph pole is loose, the first alarm information is output, where the first alarm information includes information showing the fixing state of the cable fixing device; if it is determined that the cable to be tested is pulled If the elongation is less than the first stretch threshold, output second alarm information, where the second alarm information includes displaying the shape information of the cable to be tested; if it is determined that there is a load hovering on the cable to be tested, then The third alarm information is output, wherein the third alarm information includes display information of the shape of the load.

The foregoing mainly introduces the solution of the embodiment of the present application from the perspective of the execution process on the method side. It can be understood that, in order to realize the above-mentioned functions, the vibration detection device includes hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that in combination with the units and algorithm steps of the examples described in the embodiments provided herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

The embodiment of the present application may divide the vibration detection device into functional units according to the foregoing method examples. For example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.

FIG. 6 is a block diagram of the functional unit composition of the cable vibration detection device 600 involved in the embodiment of the present application. The cable vibration detection device 600 is applied to vibration detection equipment, and includes a processing unit 601, a communication unit 602, and a storage unit 603. Among them,

The processing unit 601 is configured to shoot the original video of the cable to be tested through a camera device, and process the original vibration video according to a preset video processing strategy to obtain a target video with a motion amplification effect. The motion amplification effect refers to the to-be-tested video. The moving area of the measuring cable is amplified in the target video; and used to determine the reference vibration data of the cable to be tested according to the target video; and used to detect the real-time wind speed through an anemometer to obtain Wind speed information; and used to determine whether the vibration state of the cable under test is abnormal according to the wind speed information and the reference vibration data; and used to output a preset alarm if it is determined that the vibration state of the cable under test is abnormal information.

It can be seen that, in the embodiment of the present application, a vibration detection method for a cable is provided, which is characterized in that it is applied to a vibration detection device, the vibration detection device includes a camera device and an anemometer; the method includes: a vibration detection device The original video of the cable to be tested is captured by a camera device, and the original vibration video is processed according to a preset video processing strategy to obtain a target video with a motion amplification effect, and then the reference vibration data of the cable to be tested is determined according to the target video , Then use the anemometer to detect the real-time wind speed to obtain wind speed information; then determine whether the vibration state of the cable under test is abnormal according to the wind speed information and the reference vibration data, and output the preset when the abnormal vibration of the cable under test is detected Alarm information. It can be seen that considering that the cable is a contact sensor that cannot be installed on-site, and cannot be pasted or painted on-site with special markings, the vibration amplitude of the cable may be small. It is necessary to extract the reference vibration data after the video is amplified. Therefore, the original video is checked by the vibration detection equipment. Processing according to the preset video processing strategy, and judging whether the cable has abnormal vibration according to the processed target video and wind speed information, which is beneficial to improve the convenience and efficiency of cable vibration detection.

In a possible example, the original video of the cable to be tested is captured by a camera device, and the original vibration video is processed according to a preset video processing strategy to obtain a target video with a motion amplification effect, and the processing unit 601 is specifically configured to: The original video file of the cable to be tested is captured by the camera device, and the color space conversion process is performed on the original video file to obtain the processed first video file; according to the obtained first video file, the first video The brightness information of the file is Fourier transformed, the brightness change in the time domain is converted into the phase change in the frequency domain, and the processed second video file is obtained; for the obtained second video file, the motion amplification process is performed to obtain the process After the third video file; according to the acquired third video file, determine that the third video file is a target video with a motion amplification effect.

In a possible example, the motion amplification processing is performed on the acquired second video file to acquire the processed third video file, and the processing unit 601 is specifically configured to: Perform framing processing to obtain a first image sequence; calibrate the first image sequence to obtain a calibration image; perform color space conversion processing on the calibration image to determine a converted image; divide the converted image into cable image regions And the background image area; acquiring the first feature point in the cable image area, tracking the movement trajectory of the first feature point over time, amplifying the movement amplitude of the movement trajectory, and determining the second feature point; The image and the second feature point are converted to determine a second image sequence; and the third video file is determined according to the second image sequence.

In a possible example, the determining whether the vibration state of the cable to be tested is abnormal according to the wind speed information and the reference vibration data, the processing unit 601 is specifically configured to: determine the real-time wind speed according to the wind speed information Size; according to the real-time wind speed and a preset constraint strategy, determine the real-time limit vibration amplitude of the cable to be tested, wherein the preset constraint strategy includes the wind speed and the limit vibration amplitude of the cable to be tested Correspondence between; according to the reference vibration data, determine the reference vibration amplitude of the cable to be tested; when it is determined that the reference vibration amplitude is greater than the real-time limit vibration amplitude, determine that the vibration state of the cable to be tested is abnormal .

In a possible example, if it is determined that the vibration state of the cable to be tested is abnormal, before outputting preset alarm information, the method is further configured by the processing unit 601 to: according to the reference vibration data, Determine the reference vibration amplitude and initial vibration phase of the cable under test; determine the vibration condition of the cable under test according to the reference vibration amplitude and the initial vibration phase.

In a possible example, the vibration condition of the cable to be tested is determined according to the reference vibration amplitude and the initial vibration phase, and the processing unit 601 is specifically configured to: if it is determined that the reference vibration amplitude is determined by the The position of the two ends of the cable to be tested decreases toward the middle position, and the initial vibration phase is located at the two ends of the cable to be tested; it is determined that the cable fixing device of the cable pole is loosened in the cable to be tested If it is determined that the reference vibration amplitude increases from the two ends of the cable under test to the middle position, and the initial vibration phase is located in the middle position of the cable under test; then it is determined that the cable under test is pulled The elongation is less than the first stretch threshold; if it is determined that the reference vibration amplitude decreases from the local position of the cable under test to the two end positions, and the initial vibration phase is located at the local position of the cable under test, it is determined There is a load hovering on the cable to be tested.

In a possible example, if it is determined that the vibration state of the cable to be tested is abnormal, output preset alarm information, and the processing unit 601 is specifically configured to: if it is determined that the cable to be tested has a line of a pole If the cable fixing device is loose, the first alarm information is output, where the first alarm information includes information showing the fixing state of the cable fixing device; if it is determined that the tensile degree of the cable under test is less than the first If it is determined that there is a load hovering on the cable to be tested, the third alarm is outputted if it is determined that there is a load hovering on the cable to be tested. Information, wherein the third alarm information includes information showing the shape of the load.

An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any method as recorded in the above method embodiment , The above-mentioned computer includes a vibration detection device.

The embodiments of the present application also provide a computer program product. The above-mentioned computer program product includes a non-transitory computer-readable storage medium storing a computer program. The above-mentioned computer program is operable to cause a computer to execute any of the methods described in the above-mentioned method embodiments. Part or all of the steps of the method. The computer program product may be a software installation package, and the above-mentioned computer includes a vibration detection device.

It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should know that this application is not limited by the described sequence of actions. Because according to this application, some steps can be performed in other order or at the same time. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

In the above-mentioned embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in an embodiment, reference may be made to related descriptions of other embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed device may be implemented in other ways. For example, the device embodiments described above are only illustrative, for example, the division of the above-mentioned units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or integrated. To another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical or other forms.

The units described above as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.

If the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable memory. Based on this understanding, the technical solution of the present application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory. A number of instructions are included to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the foregoing methods of the various embodiments of the present application. The aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above-mentioned embodiments can be completed by a program instructing relevant hardware. The program can be stored in a computer-readable memory, and the memory can include: a flash disk , Read-only memory (English: Read-Only Memory, abbreviation: ROM), random access device (English: Random Access Memory, abbreviation: RAM), magnetic disk or optical disk, etc.

The embodiments of the application are described in detail above, and specific examples are used in this article to illustrate the principles and implementation of the application. The descriptions of the above embodiments are only used to help understand the methods and core ideas of the application; at the same time, for Those of ordinary skill in the art, based on the ideas of the application, will have changes in the specific implementation and the scope of application. In summary, the content of this specification should not be construed as limiting the application.

Claims

A cable vibration detection method, characterized in that it is applied to vibration detection equipment, the vibration detection equipment includes a camera device and an anemometer; the method includes:

The original video of the cable to be tested is captured by a camera device, and the original vibration video is processed according to a preset video processing strategy to obtain a target video with a motion amplification effect. The motion amplification effect means that the motion area of the cable under test is The target video has been enlarged and processed;

Determine the reference vibration data of the cable to be tested according to the target video;

Obtain wind speed information through an anemometer, where the wind speed information includes real-time wind speed magnitude and real-time wind speed direction;

Determining whether the vibration state of the cable to be tested is abnormal according to the wind speed information and the reference vibration data;

If it is determined that the vibration state of the cable to be tested is abnormal, a preset alarm message is output.
The method according to claim 1, wherein the photographing the original video of the cable to be tested by the camera device, and processing the original vibration video according to a preset video processing strategy to obtain a target video with a motion amplification effect, comprises:

Shooting the original video file of the cable to be tested by the camera device, performing color space conversion processing on the original video file, and obtaining the processed first video file;

Performing a Fourier transform on the brightness information of the first video file according to the acquired first video file, converting the brightness change in the time domain into the phase change in the frequency domain, and obtaining the processed second video file;

Performing motion amplification processing on the acquired second video file to acquire a processed third video file;

According to the acquired third video file, it is determined that the third video file is a target video with a motion amplification effect.
The method according to claim 2, wherein the performing motion amplification processing on the obtained second video file to obtain the processed third video file comprises:

Performing frame division processing on the second video file to obtain a first image sequence;

Calibrating the first image sequence to obtain a calibration image;

Performing color space conversion processing on the calibration image to determine a converted image;

Dividing the converted image into a cable image area and a background image area;

Acquiring the first feature point in the cable image area, tracking the movement trajectory of the first feature point over time, amplifying the movement amplitude of the movement trajectory, and determining the second feature point;

Determine a second image sequence according to the converted image and the second feature point;

According to the second image sequence, the third video file is determined.
The method according to claim 1, wherein the determining whether the vibration state of the cable to be tested is abnormal according to the wind speed information and the reference vibration data comprises:

Determine the real-time wind speed according to the wind speed information;

Determine the real-time limit vibration amplitude of the cable under test according to the magnitude of the real-time wind speed and a preset constraint strategy, where the preset constraint strategy includes the difference between the wind speed and the limit vibration amplitude of the cable under test Correspondence;

Determine the reference vibration amplitude of the cable to be tested according to the reference vibration data;

When it is determined that the reference vibration amplitude is greater than the real-time limit vibration amplitude, it is determined that the vibration state of the cable to be tested is abnormal.
The method according to claim 1, wherein if it is determined that the vibration state of the cable to be tested is abnormal, before outputting preset alarm information, the method further comprises:

Determine the reference vibration amplitude and initial vibration phase of the cable to be tested according to the reference vibration data;

According to the reference vibration amplitude and the initial vibration phase, the vibration condition of the cable to be tested is determined.
The method according to claim 5, wherein the determining the vibration condition of the cable under test according to the reference vibration amplitude and the initial vibration phase comprises:

If it is determined that the reference vibration amplitude decreases from the positions of the two ends of the cable to be tested to the middle position, and the initial vibration phase is located at the positions of the two ends of the cable to be tested; it is determined that the cable to be tested has a pole The cable fixing device is loose;

If it is determined that the reference vibration amplitude increases from the positions of the two ends of the cable under test to the middle position, and the initial vibration phase is located in the middle position of the cable under test; then it is determined that the cable under test is stretched The degree is less than the first stretch threshold;

If it is determined that the reference vibration amplitude decreases from the local position of the cable under test to the two end positions, and the initial vibration phase is located at the local position of the cable under test, it is determined that there is hovering on the cable under test. Load.
The method according to claim 6, wherein if it is determined that the vibration state of the cable to be tested is abnormal, outputting preset alarm information comprises:

If it is determined that the cable fixing device of the telegraph pole is loose in the cable to be tested, output first alarm information, where the first alarm information includes information showing the fixing state of the cable fixing device;

If it is determined that the degree of stretching of the cable to be tested is less than the first stretching threshold, output second alarm information, where the second alarm information includes displaying the shape information of the cable to be tested;

If it is determined that there is a load hovering on the cable to be tested, a third alarm information is output, where the third alarm information includes display information of the shape of the load.
A cable vibration detection device, characterized in that it is applied to vibration detection equipment, the vibration detection equipment includes a camera device and an anemometer; the cable vibration detection device includes a processing unit, a communication unit and a storage unit, wherein:

The processing unit is configured to shoot the original video of the cable to be tested through a camera device, and process the original vibration video according to a preset video processing strategy to obtain a target video with a motion amplification effect, and the motion amplification effect refers to the test The area where the cable moves is amplified in the target video; and used to determine the reference vibration data of the cable to be tested according to the target video; and used to detect the real-time wind speed through an anemometer to obtain the wind speed Information; and used to determine whether the vibration state of the cable under test is abnormal according to the wind speed information and the reference vibration data; and used to output preset alarm information if it is determined that the vibration state of the cable under test is abnormal .
A vibration detection device, characterized by comprising a processor, a memory, a communication interface, and one or more programs, the one or more programs are stored in the memory and configured to be executed by the processor The program includes instructions for executing the steps in the method according to any one of claims 1-7.
A computer-readable storage medium, characterized by storing a computer program for electronic data exchange, wherein the computer program causes a computer to execute the method according to any one of claims 1-7.