CN110617873A

CN110617873A - Method for detecting vibration of cable and related product

Info

Publication number: CN110617873A
Application number: CN201910895473.5A
Authority: CN
Inventors: 高风波
Original assignee: Shenzhen Haoxi Intelligent Technology Co Ltd
Current assignee: Shenzhen Haoxi Intelligent Technology Co Ltd
Priority date: 2019-04-26
Filing date: 2019-09-21
Publication date: 2019-12-27
Anticipated expiration: 2039-09-21
Also published as: CN110617873B; WO2021052022A1

Abstract

The embodiment of the application discloses a vibration detection method of a cable and a related product, which are applied to vibration detection equipment, wherein the vibration detection equipment comprises a camera device and an anemoscope; the method comprises the following steps: the method comprises the steps that a vibration detection device shoots an original video of a cable to be detected through 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, wherein the motion amplification effect means that a motion area of the cable to be detected is subjected to amplification processing in the target video; the vibration detection equipment determines reference vibration data of the cable to be detected according to the target video; meanwhile, acquiring wind speed information through an anemometer; determining whether the vibration state of the cable to be tested is abnormal or not according to the wind speed information and the reference vibration data; if the vibration state of the cable to be detected is determined to be abnormal, outputting preset alarm information; the method is favorable for improving the convenience and the high efficiency of the cable vibration detection.

Description

Method for detecting vibration of cable and related product

Technical Field

The application relates to the technical field of vibration detection equipment, in particular to a vibration detection method of a cable and a related product.

Background

In recent years, the application of power cables in power grids in China is increasingly wide, and the use amount is increased sharply. The cable lines or single or multiple cable lines are laid in various ways such as direct burial, pipelines, channels, tunnels and galleries. In the routine maintenance of the cable line, the situation that geographic information radiated by the cable is incomplete or a cable nameplate is unclear is often encountered, and at the moment, in order to ensure the safety of operators, the electrified state of the cable needs to be detected. With the continuous development of electric utilities, the number of high voltage cables is rapidly increasing. In the face of increasing line scale, operation and maintenance personnel corresponding to the transmission network cable are very limited, and the operation and maintenance situation is very severe because a large amount of manpower and material resources are occupied in the aspects of preventing external force damage of the transmission network cable, pre-testing and repairing of the outer sheath of the cable and the like. In addition, along with the requirement of the power quality of a power grid is higher and higher, the addition of the power supply reliability assessment standard is realized, the cable maintenance indexes are less and less, and the fault maintenance time is shorter and shorter, so that higher requirements are provided for quickly positioning the vibration state of the cable and preventing circuit faults after the cable is abnormally vibrated.

Disclosure of Invention

The embodiment of the application provides a vibration detection method of a cable and a related product, and aims to improve the high efficiency and convenience of vibration detection of the cable.

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, where the vibration detection device includes an image pickup device and an anemometer; the method comprises the following steps:

shooting an original video of a cable to be tested through a 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, wherein the motion amplification effect means that a motion area of the cable to be tested is amplified in the target video;

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

acquiring wind speed information through an anemometer;

determining whether the vibration state of the cable to be tested is abnormal or not according to the wind speed information and the reference vibration data;

and if the vibration state of the cable to be detected is determined to be abnormal, outputting preset alarm information.

In a second aspect, an embodiment of the present application provides a vibration detection apparatus for a cable, which is applied to a vibration detection device, where the vibration detection device includes an image pickup device and an anemometer; the vibration detecting apparatus of the cable includes a processing unit, a communication unit, and a storage unit, wherein,

the processing unit is used for shooting an original video of the cable to be detected through 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, wherein the motion amplification effect means that a motion area of the cable to be detected is subjected to amplification processing in the target video; the system comprises a target video, a vibration detector, a vibration sensor and a controller, wherein the target video is used for determining reference vibration data of the cable to be tested; the anemometer is used for acquiring wind speed information; the wind speed sensor is used for determining whether the vibration state of the cable to be tested is abnormal or not according to the wind speed information and the reference vibration data; and outputting preset alarm information if the vibration state of the cable to be tested is determined to be abnormal.

In a third aspect, an embodiment of the present application provides a vibration detection apparatus, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for executing steps in any method of the first aspect of the embodiment of the present application.

In a fourth aspect, the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform part or all of the steps described in any one of the methods in the second aspect of the present application.

In a fifth aspect, the present application provides 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 perform some or all of the steps described in any one of the methods of the second aspect of the present application. The computer program product may be a software installation package.

It can be seen that, in the embodiment of the present application, a vibration detection method for a cable is provided, which is applied to a vibration detection device, where the vibration detection device includes an image pickup device and an anemometer; the method comprises the following steps: the method comprises the steps that a vibration detection device shoots an original video of a cable to be detected through 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, wherein the motion amplification effect means that a motion area of the cable to be detected is subjected to amplification processing in the target video; the vibration detection equipment determines reference vibration data of the cable to be detected according to the target video; meanwhile, acquiring wind speed information through an anemometer; determining whether the vibration state of the cable to be tested is abnormal or not according to the wind speed information and the reference vibration data; and if the vibration state of the cable to be detected is determined to be abnormal, outputting preset alarm information. Therefore, the original video is processed according to a preset video processing strategy through the vibration detection equipment, and whether the cable has abnormal vibration or not is judged according to the processed target video and the wind speed information, so that the convenience and the high efficiency of the cable vibration detection are improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

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

fig. 2A is a schematic flowchart of a vibration detection method for a cable according to an embodiment of the present application;

FIG. 2B is a schematic diagram of vibration of a cable according to an embodiment of the present disclosure;

FIG. 2C is a schematic view of another cable vibration according to an embodiment of the present disclosure;

FIG. 2D is a schematic view of another cable vibration according to an embodiment of the present disclosure;

FIG. 2E is a schematic view of another cable vibration according to an embodiment of the present disclosure;

FIG. 3 is a schematic flow chart of another method for detecting vibration of a cable according to an embodiment of the present disclosure;

FIG. 4 is a schematic flow chart illustrating another method for detecting vibration of a cable according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a vibration detection apparatus provided in an embodiment of the present application;

fig. 6 is a block diagram of functional units of a vibration detection apparatus for a cable according to an embodiment of the present application.

Detailed Description

In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The vibration detection device according to the embodiment of the present application may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, which have wireless communication functions, and various forms of User Equipment (UE), Mobile Stations (MS), terminal devices (terminal device), and the like.

The following describes embodiments of the present application in detail.

The vibration detection method according to the embodiment of the present application belongs to a non-contact vibration detection method, as shown in fig. 1, a cable 130 to be detected, a vibration detection apparatus 100 may include a camera 110 and an anemometer 120; the original video of the vibration of the cable 130 to be measured is acquired through the camera device 110, the wind speed information is acquired through the anemograph 120, and the vibration state of the cable 130 to be measured is determined according to the detection result and the original video.

Referring to fig. 2A, fig. 2A is a schematic flowchart of a vibration detection method for a cable according to an embodiment of the present application, and the method is applied to a vibration detection apparatus, where the vibration detection apparatus includes a camera device and an anemometer; the method comprises the following steps:

s201, shooting an original video of a cable to be detected by vibration detection equipment through a 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;

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

S202, the vibration detection equipment determines reference vibration data of the cable to be detected according to the target video;

wherein the reference vibration data comprises at least one of: vibration amplitude, vibration frequency, vibration phase and time domain waveform.

S203, the vibration detection equipment acquires wind speed information through an anemometer;

the wind speed information comprises real-time wind speed size and real-time wind speed direction.

S204, the vibration detection equipment determines whether the vibration state of the cable to be detected is abnormal or not according to the wind speed information and the reference vibration data;

the method comprises the steps of determining whether the vibration state of the cable to be tested is abnormal or not, inquiring a preset mapping relation by taking the wind speed information as an inquiry identifier, and acquiring the extreme vibration data corresponding to the wind speed information, wherein the mapping relation comprises the corresponding relation between the wind speed information and the extreme vibration data.

S205, if the vibration detection equipment determines that the vibration state of the cable to be detected is abnormal, outputting preset alarm information.

In one possible example, the vibration detection apparatus captures an original video of a cable to be detected through a camera device, processes the original vibration video according to a preset video processing strategy to obtain a target video with a motion amplification effect, and includes: the method comprises the steps that vibration detection equipment shoots an original video file of a cable to be detected through a camera device, color space conversion processing is conducted on the original video file, and a processed first video file is obtained; the vibration detection equipment carries out Fourier transformation on the brightness information of the first video file according to the acquired first video file, converts the brightness change of a time domain into the phase change of a frequency domain, and acquires a processed second video file; the vibration detection equipment performs motion amplification processing on the obtained second video file to obtain a processed third video file; and the vibration detection equipment determines that the third video file is a target video with a motion amplification effect according to the acquired third video file.

The method includes the steps of shooting an original video file of a cable to be tested through a camera device, carrying out color space conversion processing on the original video file, and obtaining a processed first video file, wherein the method includes the following steps: acquiring a sequence frame of the original video file, and acquiring red, green and blue color channels of the sequence frame according to an RGB color space algorithm; converting the red, green and blue color channels into a brightness signal, a first color signal and a second color signal of a YIQ color space algorithm; the conversion relation between RGB and YIQ is as follows:

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。

the method for obtaining the third video file includes: performing spatial pyramid decomposition on the video sequence to obtain videos with different spatial resolutions; performing time domain band-pass filtering processing on images with different scales on the pyramid to obtain a plurality of interested frequency bands; the band-pass filtered signal is linearly amplified and added to the original information.

The method for obtaining the third video file includes: maintaining I, Q channel unchanged with YIQ color space converted from input video, and performing FFT operation on Y channel; and carrying out complex controllable pyramid space domain decomposition on the Y-channel image after the FFT. Carrying out time domain band-pass filtering on the images with different scales after the Y-channel spatial domain decomposition; amplifying the interested motion information after time domain band-pass filtering; carrying out complex controllable pyramid reconstruction on the interested motion information to obtain an amplified Y-channel image; and finally, adding the reconstructed Y-channel image and the original I, Q-channel image, and converting the image into an RGB color space to obtain an output video.

In this example, it can be seen that, in the vibration detection apparatus, an original video file of a cable to be detected is shot by using an image pickup device, color space conversion processing is performed on the original video file to obtain a processed first video file, then according to the obtained first video file, fourier transform is performed on luminance information of the first video file, luminance change in a time domain is converted into phase change in a frequency domain to obtain a processed second video file, then motion amplification processing is performed on the obtained second video file to obtain a processed third video file, and finally, according to the obtained third video file, the vibration detection apparatus determines that the third video file is a target video with a motion amplification effect; the method is beneficial to more conveniently and accurately determining the reference vibration data of the cable to be detected, so that the vibration state of the cable to be detected is further determined, and the high efficiency and convenience of the vibration detection of the cable are improved.

In one possible example, the performing, by the vibration detection device, motion amplification processing on the acquired second video file to acquire a processed third video file includes: the vibration detection equipment carries out framing processing on the second video file to obtain a first image sequence; the vibration detection equipment calibrates the first image sequence to obtain a calibration image; the vibration detection equipment performs color space conversion processing on the calibration image to determine a conversion image; the vibration detection equipment divides the converted image into a cable image area and a background image area; the vibration detection equipment acquires a first characteristic point in the cable image area, tracks a motion track of the first characteristic point changing along with time, amplifies the motion amplitude of the motion track and determines a second characteristic point; the vibration detection equipment determines a second image sequence according to the converted image and the second feature point; and the vibration detection equipment determines the third video file according to the second image sequence.

And determining a second image sequence according to the converted image and the second feature point, wherein the step of correspondingly fusing the second feature point into the converted image to obtain a target image and determining the second image sequence according to the target image.

After the first feature point in the cable image area is obtained, the method further comprises the steps of identifying, matching, clustering and optical flow field interpolation of the first feature point.

As can be seen, in this example, the vibration detection device performs framing processing on the second video file to obtain a first image sequence, then calibrates the first image sequence to obtain a calibration image, then performs color-space conversion processing on the calibration image to determine a conversion image, further divides the conversion image into a cable image area and a background image area, obtains a first feature point in the cable image area, tracks a motion trajectory of the first feature point changing with time, amplifies a motion amplitude of the motion trajectory, determines a second feature point, determines a second image sequence o according to the conversion image and the second feature point, and finally determines the third video file according to the second image sequence; the vibration of irrelevant objects such as an amplified background and the like can be prevented, so that the vibration amplification treatment of the cable to be detected is focused.

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

The preset constraint strategy comprises the corresponding relation between the wind speed and the limit vibration amplitude of the cable to be tested.

In a specific implementation, as shown in fig. 2B, L1 and L2 are positions where a cable fixing device of a telegraph pole exists in the cable to be detected, the vibration detection device determines that the ultimate vibration amplitude of the cable to be detected L under the constraint of the fourth grade wind is M according to the wind speed information being the fourth grade wind and a preset constraint strategy; and when the vibration detection equipment determines that the reference vibration amplitude N is larger than the limit vibration amplitude M, determining that the vibration state of the cable to be detected is abnormal.

In this example, it can be seen that the vibration detection device determines the real-time wind speed according to the wind speed information; the vibration detection equipment determines the real-time limit vibration amplitude of the cable to be detected according to the real-time wind speed and a preset constraint strategy; the vibration detection equipment determines the reference vibration amplitude of the cable to be detected according to the reference vibration data; when the vibration detection equipment determines that the reference vibration amplitude is larger than the real-time limit vibration amplitude, determining that the vibration state of the cable to be detected is abnormal; the method is beneficial to determining the vibration state of the cable to be tested more efficiently and rapidly, and when the vibration state of the cable to be tested is abnormal, corresponding processing measures are taken rapidly, so that adverse consequences and loss caused by abnormal vibration are avoided.

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

In this example, the vibration detection device determines the reference vibration amplitude and the initial vibration phase of the cable to be tested according to the reference vibration data; the vibration detection equipment determines the vibration condition of the cable to be detected according to the reference vibration amplitude and the initial vibration phase, so that the high efficiency and the accuracy of determining the vibration condition of the cable to be detected are improved, and the vibration condition of the cable under various different conditions is judged.

In one possible example, the determining, by the vibration detection device, the vibration condition of the cable to be tested according to the reference vibration amplitude and the initial vibration phase includes: if the vibration detection equipment determines that the reference vibration amplitude is reduced from the two end positions of the cable to be detected to the middle position, and the initial vibration phases are located at the two end positions of the cable to be detected; determining that the cable to be tested is loosened by the cable fixing device of the telegraph pole; if the vibration detection equipment determines that the reference vibration amplitude is increased from the two end positions of the cable to be detected to the middle position, and the initial vibration phase is located at the middle position of the cable to be detected; determining that the degree of stretching of the cable to be tested is less than a first stretching threshold value; and if the vibration detection equipment determines that the reference vibration amplitude is reduced from the local position of the cable to be detected to the two end positions, and the initial vibration phase is located at the local position of the cable to be detected, determining that a load is suspended on the cable to be detected.

And the two end positions comprise cable fixing positions of telegraph poles at two ends in a third video file of the cable to be tested.

And determining the middle position of the cable to be tested as the middle position by taking the two ends of the cable to be tested as end points.

Wherein the load comprises birds and kicked up waste.

In a specific implementation, as shown in fig. 2C, fig. 2C is a schematic view of a vibration condition of a cable X, where a vibration detection device determines that a vibration amplitude of the reference vibration data decreases from two end positions of the cable to be tested to a middle position, and determines that initial vibration phases of the cable X are at two end positions X1 and X2 of the cable to be tested; the vibration detection equipment determines that the cable to be detected is loosened by the cable fixing device of the telegraph pole, so that the vibration amplitudes of the positions of the cable fixing devices of the telegraph pole, namely the two end positions X1 and X2 of the cable X are large.

In a specific implementation, as shown in fig. 2D, fig. 2D is a schematic view of a vibration condition of a cable Y, where a vibration detection device determines that a vibration amplitude of the reference vibration data is increased from two end positions of the cable to be tested to a middle position, and determines that an initial vibration phase of the cable Y is at the middle position Y1 of the cable to be tested; the vibration detecting apparatus determines that the cable Y has a large stretching redundancy due to the cable Y itself being stretched too little, and thus a situation where the cable Y itself shakes occurs, and thus the intermediate position Y1 of the cable Y has a large vibration amplitude.

In a specific implementation, as shown in fig. 2E, fig. 2E is a schematic view of a vibration condition of a cable Z, and a vibration detection device determines that a vibration amplitude of the reference vibration data is reduced from a random position Z1 of the cable to be detected to positions at two ends; the vibration detection device determines that an initial vibration phase of the reference vibration data is at Z1 of the cable under test; the vibration detection device determines that a load is hovering over cable Z1 where the cable to be tested is present, and the vibration condition in fig. 2E occurs.

As can be seen, in this example, if it is determined that the reference vibration amplitude decreases from the two end positions of the cable to be tested to the middle position, and the initial vibration phase is located at the two end positions of the cable to be tested, the vibration detection device determines that the reference vibration amplitude decreases from the two end positions of the cable to be tested to the middle position; determining that the cable to be tested is loosened by the cable fixing device of the telegraph pole; if the vibration detection equipment determines that the reference vibration amplitude is increased from the two end positions of the cable to be detected to the middle position, and the initial vibration phase is located at the middle position of the cable to be detected; determining that the degree of stretching of the cable to be tested is less than a first stretching threshold value; if the vibration detection equipment determines that the reference vibration amplitude is reduced from the local position of the cable to be detected to the positions of two ends, and the initial vibration phase is located at the local position of the cable to be detected, determining that a load is suspended on the cable to be detected; the cable vibration detection method has the advantages that the vibration reasons of the cable are diversified, the determination of the cable vibration state caused by the diversified reasons under different conditions is favorably improved, and the accuracy and the convenience of the cable vibration detection to be detected are favorably improved.

In a possible example, if the vibration detection device determines that the vibration state of the cable to be detected is abnormal, outputting preset alarm information, including: if the vibration detection equipment determines that the cable to be detected is loosened in the cable fixing device of the telegraph pole, outputting first alarm information; if the vibration detection equipment determines that the stretching degree of the cable to be detected is smaller than a first stretching threshold value, outputting second alarm information; and if the vibration detection equipment determines that a load is suspended on the cable to be detected, outputting third alarm information.

Wherein, first alarm information is including showing the fixed state information of cable fixing device.

And the second alarm information comprises shape information for displaying the cable to be tested.

Wherein the third alarm information includes shape information showing the load.

In this example, if the vibration detection device determines that the cable to be detected is loosened in the cable fixing device of the telegraph pole, first alarm information is output; if the vibration detection equipment determines that the stretching degree of the cable to be detected is smaller than a first stretching threshold value, outputting second alarm information; if the vibration detection equipment determines that a load is suspended on the cable to be detected, outputting third alarm information; the alarm information receiving method is favorable for helping workers to judge the specific abnormal condition of the cable to be tested more quickly when receiving the alarm information.

Referring to fig. 3, fig. 3 is a schematic flow chart of a vibration detection method for a cable according to an embodiment of the present application, and the method is applied to a vibration detection apparatus, where the vibration detection apparatus includes an image pickup device and an anemometer; as shown in the drawing, the vibration detection method of the cable includes:

s301, shooting an original video file of a cable to be detected by vibration detection equipment through a camera device, and performing color space conversion processing on the original video file to obtain a processed first video file;

s302, the vibration detection equipment performs Fourier transform on the brightness information of the first video file according to the acquired first video file, converts the brightness change of a time domain into the phase change of a frequency domain, and acquires a processed second video file;

s303, the vibration detection equipment performs motion amplification processing on the obtained second video file to obtain a processed third video file;

s304, the vibration detection equipment determines the third video file as a target video with a motion amplification effect according to the acquired third video file;

s305, the vibration detection equipment determines reference vibration data of the cable to be detected according to the target video;

s306, the vibration detection equipment acquires wind speed information through an anemometer, wherein the wind speed information comprises real-time wind speed and real-time wind speed direction;

s307, the vibration detection equipment determines whether the vibration state of the cable to be detected is abnormal or not according to the wind speed information and the reference vibration data;

and S308, if the vibration detection equipment determines that the vibration state of the cable to be detected is abnormal, outputting preset alarm information.

In addition, the vibration detection equipment shoots an original video file of a cable to be detected through a camera device, performs color space conversion processing on the original video file to obtain a processed first video file, performs Fourier transform on brightness information of the first video file according to the obtained first video file, converts brightness change of a time domain into phase change of a frequency domain to obtain a processed second video file, performs motion amplification processing on the obtained second video file to obtain a processed third video file, and finally determines that the third video file is a target video with a motion amplification effect according to the obtained third video file; the method is beneficial to more conveniently and accurately determining the reference vibration data of the cable to be detected, so that the vibration state of the cable to be detected is further determined, and the high efficiency and convenience of the vibration detection of the cable are improved.

Referring to fig. 4, in accordance with the embodiment shown in fig. 2A, fig. 4 is a schematic flowchart of a vibration detection method for a cable according to an embodiment of the present application, and the method is applied to a vibration detection apparatus, where the vibration detection apparatus includes an image pickup device and an anemometer; as shown in the drawing, the vibration detection method of the cable includes:

s401, shooting an original video of a cable to be detected by vibration detection equipment through a 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;

s402, the vibration detection equipment determines reference vibration data of the cable to be detected according to the target video;

s403, the vibration detection equipment acquires wind speed information through an anemometer;

s404, the vibration detection equipment determines the real-time wind speed according to the wind speed information;

s405, the vibration detection equipment determines the real-time limit vibration amplitude of the cable to be detected according to the real-time wind speed and a preset constraint strategy;

s406, the vibration detection equipment determines the reference vibration amplitude of the cable to be detected according to the reference vibration data;

s407, when the vibration detection device determines that the reference vibration amplitude is larger than the real-time limit vibration amplitude, determining that the vibration state of the cable to be detected is abnormal;

s408, if the vibration detection device determines that the vibration state of the cable to be detected is abnormal, outputting preset alarm information.

In addition, the vibration detection equipment determines the real-time wind speed according to the wind speed information; the vibration detection equipment determines the real-time limit vibration amplitude of the cable to be detected according to the real-time wind speed and a preset constraint strategy; the vibration detection equipment determines the reference vibration amplitude of the cable to be detected according to the reference vibration data; when the vibration detection equipment determines that the reference vibration amplitude is larger than the real-time limit vibration amplitude, determining that the vibration state of the cable to be detected is abnormal; the method is beneficial to determining the vibration state of the cable to be tested more efficiently and rapidly, and when the vibration state of the cable to be tested is abnormal, corresponding processing measures are taken rapidly, so that adverse consequences and loss caused by abnormal vibration are avoided.

In accordance with the embodiments shown in fig. 2A, fig. 3, and fig. 4, please refer to fig. 5, fig. 5 is a schematic structural diagram of a vibration detection apparatus 500 according to an embodiment of the present application, as shown in the figure, the vibration detection apparatus 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 to be executed by the application processor 510, and the one or more programs 521 include instructions for performing the following steps;

acquiring wind speed information through an anemometer, wherein the wind speed information comprises real-time wind speed and real-time wind speed direction;

In one possible example, the method includes the steps of shooting an original video of a cable to be tested through a camera device, processing the original vibration video according to a preset video processing strategy to obtain a target video with a motion amplification effect, where the instructions in the program are specifically configured to perform the following operations: shooting an original video file of a cable to be detected through a camera device, and performing color space conversion processing on the original video file to obtain a processed first video file; according to the obtained first video file, carrying out Fourier transform on the brightness information of the first video file, converting the brightness change of a time domain into the phase change of a frequency domain, and obtaining a processed second video file; performing motion amplification processing on the obtained second video file to obtain a processed third video file; and determining the third video file as a target video with a motion amplification effect according to the acquired third video file.

In a possible example, the motion amplification processing is performed on the obtained second video file to obtain a processed third video file, and the instructions in the program are specifically configured to perform the following operations: performing framing 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 conversion image; dividing the converted image into a cable image area and a background image area; acquiring a first characteristic point in the cable image area, tracking a motion track of the first characteristic point along with time change, amplifying the motion amplitude of the motion track, and determining a second characteristic point; determining a second image sequence according to the converted image and the second feature point; and determining the third video file 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 includes instructions in the program specifically configured to: determining the real-time wind speed according to the wind speed information; determining the real-time limit vibration amplitude of the cable to be tested according to the real-time wind speed and a preset constraint strategy, wherein the preset constraint strategy comprises the corresponding relation between the wind speed and the limit vibration amplitude of the cable to be tested; determining the reference vibration amplitude of the cable to be tested according to the reference vibration data; and when the reference vibration amplitude is determined to be larger than the real-time limit vibration amplitude, determining that the vibration state of the cable to be tested is abnormal.

In a possible example, before outputting preset alarm information if it is determined that the vibration state of the cable to be tested is abnormal, the method further includes that the instruction in the program is specifically used for executing the following operations: determining a reference vibration amplitude and an initial vibration phase of the cable to be tested according to the reference vibration data; and determining the vibration condition of the cable to be tested according to the reference vibration amplitude and the initial vibration phase.

In a possible example, the determining, according to the reference vibration amplitude and the initial vibration phase, a vibration condition of the cable to be tested, and the instructions in the program are specifically configured to perform the following operations: if it is determined that the reference vibration amplitude is reduced from the two end positions of the cable to be tested to the middle position, and the initial vibration phases are located at the two end positions of the cable to be tested; determining that the cable to be tested is loosened by the cable fixing device of the telegraph pole; if the reference vibration amplitude is determined to be increased from the two end positions of the cable to be tested to the middle position, and the initial vibration phase is located at the middle position of the cable to be tested; determining that the degree of stretching of the cable to be tested is less than a first stretching threshold value; and if the reference vibration amplitude is determined to be reduced from the local position of the cable to be tested to the positions of the two ends, and the initial vibration phase is located at the local position of the cable to be tested, determining that a load is suspended 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, outputting preset alarm information, where an instruction in the program is specifically used to perform the following operations: if the situation that the cable fixing device of the telegraph pole is loosened is determined to exist in the cable to be tested, outputting first alarm information, wherein the first alarm information comprises information for displaying the fixing state of the cable fixing device; if the fact that the stretching degree of the cable to be tested is smaller than a first stretching threshold value is determined, outputting second alarm information, wherein the second alarm information comprises shape information of the cable to be tested; and if determining that a load object is suspended on the cable to be tested, outputting third alarm information, wherein the third alarm information comprises shape information for displaying the load object.

The above description has introduced the solution of the embodiment of the present application mainly from the perspective of the method-side implementation process. It will be appreciated that the vibration detection apparatus, in order to carry out the above-described functions, comprises corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the present application is capable of hardware or a combination of hardware and computer software implementing the various illustrative elements and algorithm steps described in connection with the embodiments provided herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the present application may perform division of the functional units for the vibration detection device according to the above method example, 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 integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

Fig. 6 is a block diagram showing functional units of a cable vibration detection device 600 according to an embodiment of the present application. The vibration detecting apparatus 600 of the cable is applied to a vibration detecting device including a processing unit 601, a communication unit 602, and a storage unit 603, wherein,

the processing unit 601 is configured to shoot an original video of a cable to be detected 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, where the motion amplification effect means that an area of the cable to be detected where motion occurs is amplified in the target video; the system comprises a target video, a vibration detector, a vibration sensor and a controller, wherein the target video is used for determining reference vibration data of the cable to be tested; the anemometer is used for detecting the real-time wind speed and acquiring wind speed information; the wind speed sensor is used for determining whether the vibration state of the cable to be tested is abnormal or not according to the wind speed information and the reference vibration data; and outputting preset alarm information if the vibration state of the cable to be tested is determined to be abnormal.

The cable vibration detection method is characterized by being applied to vibration detection equipment, wherein the vibration detection equipment comprises a camera device and an anemoscope; the method comprises the following steps: the method comprises the steps that vibration detection equipment shoots an original video of a cable to be detected through a camera device, processes the original vibration video according to a preset video processing strategy to obtain a target video with a motion amplification effect, determines reference vibration data of the cable to be detected according to the target video, detects real-time wind speed through an anemoscope and obtains wind speed information; and determining whether the vibration state of the cable to be tested is abnormal or not according to the wind speed information and the reference vibration data, and outputting preset alarm information when the abnormal vibration of the cable to be tested is detected. Therefore, considering that the cable belongs to a contact type sensor which cannot be installed on site, and a special mark cannot be pasted or sprayed on site, and meanwhile, the vibration amplitude of the cable is possibly very small, and the reference vibration data is extracted after the video is amplified, the original video is processed according to a preset video processing strategy through the vibration detection equipment, whether the cable has abnormal vibration or not is judged according to the processed target video and the processed wind speed information, and convenience and high efficiency of cable vibration detection are improved.

In a possible example, the original video of the cable to be measured is captured by the camera device, and the original vibration video is processed according to a preset video processing policy to obtain a target video with a motion amplification effect, where the processing unit 601 is specifically configured to: shooting an original video file of a cable to be detected through a camera device, and performing color space conversion processing on the original video file to obtain a processed first video file; according to the obtained first video file, carrying out Fourier transform on the brightness information of the first video file, converting the brightness change of a time domain into the phase change of a frequency domain, and obtaining a processed second video file; performing motion amplification processing on the obtained second video file to obtain a processed third video file; and determining the third video file as a target video with a motion amplification effect according to the acquired third video file.

In a possible example, in the processing unit 601, specifically, to perform motion amplification processing on the obtained second video file to obtain a processed third video file, the motion amplification processing is performed to: performing framing 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 conversion image; dividing the converted image into a cable image area and a background image area; acquiring a first characteristic point in the cable image area, tracking a motion track of the first characteristic point along with time change, amplifying the motion amplitude of the motion track, and determining a second characteristic point; determining a second image sequence according to the converted image and the second feature point; and determining the third video file according to the second image sequence.

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

In a possible example, before outputting preset alarm information if it is determined that the vibration state of the cable to be tested is abnormal, the method further includes that the processing unit 601 is specifically configured to: determining a reference vibration amplitude and an initial vibration phase of the cable to be tested according to the reference vibration data; and determining the vibration condition of the cable to be tested 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 reduced from the two end positions of the cable to be tested to the middle position, and the initial vibration phases are located at the two end positions of the cable to be tested; determining that the cable to be tested is loosened by the cable fixing device of the telegraph pole; if the reference vibration amplitude is determined to be increased from the two end positions of the cable to be tested to the middle position, and the initial vibration phase is located at the middle position of the cable to be tested; determining that the degree of stretching of the cable to be tested is less than a first stretching threshold value; and if the reference vibration amplitude is determined to be reduced from the local position of the cable to be tested to the positions of the two ends, and the initial vibration phase is located at the local position of the cable to be tested, determining that a load is suspended 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, preset alarm information is output, and the processing unit 601 is specifically configured to: if the situation that the cable fixing device of the telegraph pole is loosened is determined to exist in the cable to be tested, outputting first alarm information, wherein the first alarm information comprises information for displaying the fixing state of the cable fixing device; if the fact that the stretching degree of the cable to be tested is smaller than a first stretching threshold value is determined, outputting second alarm information, wherein the second alarm information comprises shape information of the cable to be tested; and if determining that a load object is suspended on the cable to be tested, outputting third alarm information, wherein the third alarm information comprises shape information for displaying the load object.

Embodiments of the present application also provide a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, the computer program enabling a computer to perform part or all of the steps of any one of the methods as described in the above method embodiments, and the computer includes a vibration detection device.

Embodiments of the present application also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any of the methods as described in the above method embodiments. The computer program product may be a software installation package, said computer comprising vibration detection means.

It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit may be stored in a computer readable memory if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the above-mentioned method of the embodiments of the present application. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. The cable vibration detection method is characterized by being applied to vibration detection equipment, wherein the vibration detection equipment comprises a camera device and an anemoscope; the method comprises the following steps:

2. The method according to claim 1, wherein the capturing an original video of the cable to be tested by a 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 an original video file of a cable to be detected through a camera device, and performing color space conversion processing on the original video file to obtain a processed first video file;

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

performing motion amplification processing on the obtained second video file to obtain a processed third video file;

and determining the third video file as a target video with a motion amplification effect according to the acquired third video file.

3. The method according to claim 2, wherein the performing motion amplification processing on the obtained second video file to obtain a processed third video file comprises:

performing framing 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 conversion image;

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

acquiring a first characteristic point in the cable image area, tracking a motion track of the first characteristic point along with time change, amplifying the motion amplitude of the motion track, and determining a second characteristic point;

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

and determining the third video file according to the second image sequence.

4. The method of claim 1, wherein the determining whether the vibration state of the cable under test is abnormal according to the wind speed information and the reference vibration data comprises:

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

determining the real-time limit vibration amplitude of the cable to be tested according to the real-time wind speed and a preset constraint strategy, wherein the preset constraint strategy comprises the corresponding relation between the wind speed and the limit vibration amplitude of the cable to be tested;

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

and when the reference vibration amplitude is determined to be larger than the real-time limit vibration amplitude, determining that the vibration state of the cable to be tested is abnormal.

5. The method according to claim 1, wherein before outputting preset alarm information if it is determined that the vibration state of the cable to be tested is abnormal, the method further comprises:

determining a reference vibration amplitude and an initial vibration phase of the cable to be tested according to the reference vibration data;

and determining the vibration condition of the cable to be tested according to the reference vibration amplitude and the initial vibration phase.

6. The method of claim 5, wherein 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 is reduced from the two end positions of the cable to be tested to the middle position, and the initial vibration phases are located at the two end positions of the cable to be tested; determining that the cable to be tested is loosened by the cable fixing device of the telegraph pole;

if the reference vibration amplitude is determined to be increased from the two end positions of the cable to be tested to the middle position, and the initial vibration phase is located at the middle position of the cable to be tested; determining that the degree of stretching of the cable to be tested is less than a first stretching threshold value;

and if the reference vibration amplitude is determined to be reduced from the local position of the cable to be tested to the positions of the two ends, and the initial vibration phase is located at the local position of the cable to be tested, determining that a load is suspended on the cable to be tested.

7. 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, including:

if the situation that the cable fixing device of the telegraph pole is loosened is determined to exist in the cable to be tested, outputting first alarm information, wherein the first alarm information comprises information for displaying the fixing state of the cable fixing device;

if the fact that the stretching degree of the cable to be tested is smaller than a first stretching threshold value is determined, outputting second alarm information, wherein the second alarm information comprises shape information of the cable to be tested;

and if determining that a load object is suspended on the cable to be tested, outputting third alarm information, wherein the third alarm information comprises shape information for displaying the load object.

8. The cable vibration detection device is characterized by being applied to vibration detection equipment, wherein the vibration detection equipment comprises a camera device and an anemoscope; the vibration detecting apparatus of the cable includes a processing unit, a communication unit, and a storage unit, wherein,

the processing unit is used for shooting an original video of the cable to be detected through 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, wherein the motion amplification effect means that a motion area of the cable to be detected is subjected to amplification processing in the target video; the system comprises a target video, a vibration detector, a vibration sensor and a controller, wherein the target video is used for determining reference vibration data of the cable to be tested; the anemometer is used for detecting the real-time wind speed and acquiring wind speed information; the wind speed sensor is used for determining whether the vibration state of the cable to be tested is abnormal or not according to the wind speed information and the reference vibration data; and outputting preset alarm information if the vibration state of the cable to be tested is determined to be abnormal.

9. A vibration detection apparatus comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs including instructions for performing the steps in the method of any of claims 1-7.

10. A computer-readable storage medium, characterized in that a computer program for electronic data exchange is stored, wherein the computer program causes a computer to perform the method according to any one of claims 1-7.