CN116092277A - Cable fracture remote wireless monitoring and early warning system - Google Patents

Cable fracture remote wireless monitoring and early warning system Download PDF

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Publication number
CN116092277A
CN116092277A CN202310368468.5A CN202310368468A CN116092277A CN 116092277 A CN116092277 A CN 116092277A CN 202310368468 A CN202310368468 A CN 202310368468A CN 116092277 A CN116092277 A CN 116092277A
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cable
early warning
image
module
related data
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Inventor
钟怡晨
***
江泽灏
赵紫民
李军
陈洪元
武卓睿
蔡启亮
王坤
邵玉洁
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Qingdao Power Supply Co of State Grid Shandong Electric Power Co Ltd
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Qingdao Power Supply Co of State Grid Shandong Electric Power Co Ltd
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Priority to CN202310368468.5A priority Critical patent/CN116092277A/en
Publication of CN116092277A publication Critical patent/CN116092277A/en
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/185—Electrical failure alarms

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  • General Physics & Mathematics (AREA)
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Abstract

The invention relates to the field of electric power facilities, in particular to a cable breakage remote wireless monitoring and early warning system, which comprises: and the acquisition module is used for: the cable-related data monitoring and collecting device is used for monitoring and collecting cable-related data through the collecting device; the processing module is used for: the system is used for preprocessing the collected cable related data; and an analysis module: the method is used for carrying out cable state analysis processing on the preprocessed cable related data based on an improved optical flow method; and the early warning module is used for: and the system is used for judging and early warning the cable state according to the analysis result of the analysis module. According to the invention, the cable operation environment and the cable data are detected, the cable operation state is analyzed, the remote early warning is carried out on further dangerous situations possibly caused by the broken cable, and enough rescue time is reserved for rescue personnel by adjusting the threshold value, so that the huge loss caused by the broken cable can be effectively reduced.

Description

Cable fracture remote wireless monitoring and early warning system
Technical Field
The invention relates to the field of electric power facilities, in particular to a cable breakage remote wireless monitoring and early warning system.
Background
The cable is a common electric cable, the cable is a wire product for transmitting electric (magnetic) energy, information and realizing electromagnetic energy conversion, the cable is mainly composed of one or more insulated wire cores, and a coating layer, a total protective layer and an outer protective layer which can be respectively arranged on the cable, the cable is also classified into different types due to different purposes, wherein the cable for the network is a network cable, the network cable is generally arranged in a cable box at a high place, the existing intelligent monitoring cable is generally arranged at an outdoor wall body and an indoor wall body, the cable is subjected to long-time wind and sun exposure and the friction of the wall body and is in a field with severe environment for a long time, the cable is easily influenced by wind and rain, snowfall, hail, ice coating and the like, the cable is easy to break, after the local cable breaks, the cable is locally broken, the cable can be checked by a user through telephone complaint after the local power failure, the cable break is finally determined, hysteresis is generated after the cable breaks, and if the cable breaks, the cable causes electric energy short circuit or electric leakage, and fire accidents, or other life and property accidents can be caused. Therefore, after the cable fails, how to quickly and accurately find the failure point and quickly recover the power supply becomes a difficult problem for the power man for a long time.
Disclosure of Invention
The invention aims to solve the defects in the background technology by providing a cable breakage remote wireless monitoring and early warning system.
The technical scheme adopted by the invention is as follows:
the utility model provides a cable fracture long-range wireless monitoring early warning system, includes:
and the acquisition module is used for: the cable-related data monitoring and collecting device is used for monitoring and collecting cable-related data through the collecting device;
the processing module is used for: the system is used for preprocessing the collected cable related data;
and an analysis module: the method is used for carrying out cable state analysis processing on the preprocessed cable related data based on an improved optical flow method;
and the early warning module is used for: and the system is used for judging and early warning the cable state according to the analysis result of the analysis module.
As a preferred technical scheme of the invention: the wireless transmission module is used for wirelessly transmitting the cable related data and the cable state.
As a preferred technical scheme of the invention: the cable related data includes cable operation data, cable operation image data, and cable operation environment data.
As a preferred technical scheme of the invention: and the processing module performs data filling and data cleaning on the collected cable related data.
As a preferred technical scheme of the invention: in the analysis module, marks are carried out on the cable, and the marks on the cable are extracted and tracked based on an improved optical flow method.
As a preferred technical scheme of the invention: in the analysis module, a fixed length is taken on the cable for marking, the maximum length of the cable when the marked length of the cable is irrecoverable deformed is measured, meanwhile, the acceleration change value of the cable when the cable is broken is measured, the maximum length threshold value of the cable is set according to the maximum length, and the acceleration change threshold value is set according to the acceleration change value.
As a preferred technical scheme of the invention: in the improved optical flow method, two frames of two-dimensional gray images of the same mark point of the cable are provided with I and J, and gray values of each pixel point on the images are defined as follows:
Figure SMS_1
；
wherein ,
Figure SMS_3
is the coordinates of the pixel points on the cable image; />
Figure SMS_5
and />
Figure SMS_8
All represent cable images +.>
Figure SMS_4
Upper pixel +.>
Figure SMS_7
Gray values of (2); />
Figure SMS_9
and />
Figure SMS_10
All represent cable images +.>
Figure SMS_2
Upper pixel +.>
Figure SMS_6
Gray values of (2);
selecting characteristic pixel points
Figure SMS_13
And pixel dot->
Figure SMS_17
Feature pixel dot->
Figure SMS_22
For image->
Figure SMS_14
The position coordinates of the pixel points are as follows
Figure SMS_16
，/>
Figure SMS_19
For image->
Figure SMS_23
The position coordinates of the matching characteristic pixel points are +.>
Figure SMS_12
，/>
Figure SMS_18
，/>
Figure SMS_20
Point +.>
Figure SMS_21
The change values in the x-axis and y-axis when a new pixel is reached are set to the point +.>
Figure SMS_11
And (4) point->
Figure SMS_15
The gray value difference between the two is the smallest, namely:
Figure SMS_24
；
wherein ,
Figure SMS_25
and />
Figure SMS_26
Respectively represent characteristic pixel points->
Figure SMS_27
And feature pixel dot->
Figure SMS_28
Gray values of (2);
setting up points
Figure SMS_29
Is +.>
Figure SMS_30
Taking any integer +.>
Figure SMS_31
Solving for the optical flow velocity vector +.>
Figure SMS_32
Vector->
Figure SMS_33
Satisfy residual function->
Figure SMS_34
Minimum:
Figure SMS_35
；
wherein the value range is
Figure SMS_36
。
As a preferred technical scheme of the invention: in the improved optical flow method, hierarchical sampling compression is carried out through a pyramid hierarchical algorithm.
As a preferred technical scheme of the invention: in the pyramid layering algorithm, a pyramid model is provided with L layers
Figure SMS_37
Setting an image scaling factor +.>
Figure SMS_38
Definitions->
Figure SMS_39
Is the pixel point on the cable image +.>
Figure SMS_40
Coordinates at layer L:
Figure SMS_41
；
is provided with
Figure SMS_42
Is a layer 0 cable image, i.e. +.>
Figure SMS_43
For the original cable image in the pyramid, the resolution is highest, and the information of each layer of cable image of the pyramid is calculated through a recursive algorithm:
Figure SMS_44
；
wherein ,
Figure SMS_45
，/>
Figure SMS_46
，/>
Figure SMS_47
and />
Figure SMS_48
Width and height of the cable image for layer L-1;
l-layer pixel point
Figure SMS_49
Corresponding velocity vector>
Figure SMS_50
The minimum residual function of the layer L cable image is satisfied, namely:
Figure SMS_51
；
wherein ,
Figure SMS_52
，/>
Figure SMS_53
width and height of the layer L cable image; />
Figure SMS_54
As the initial lightA stream vector;
obtaining equivalent solution for the above derivation
Figure SMS_55
：
Figure SMS_56
；
wherein ,
Figure SMS_57
is a spatial gradient matrix>
Figure SMS_58
Is a mismatch matrix:
Figure SMS_59
；
Figure SMS_60
；
velocity vector of pixel point
Figure SMS_61
Speed size +.>
Figure SMS_62
And movement angle->
Figure SMS_63
The method comprises the following steps:
Figure SMS_64
；
Figure SMS_65
；
and calculating and obtaining the cable motion acceleration based on the cable speed, the motion direction and the interval time of two-dimensional gray images, and continuously monitoring.
As a preferred technical scheme of the invention: the early warning module monitors the cable state according to the analysis result of the analysis module, and when the maximum length of the monitored cable reaches or exceeds a threshold value or the movement acceleration of the cable reaches an acceleration change threshold value, the wireless transmission module sends out cable breakage early warning.
Compared with the prior art, the cable fracture remote wireless monitoring and early warning system provided by the invention has the beneficial effects that:
according to the invention, the cable operation environment and the cable data are detected, the cable operation state is analyzed, the remote early warning is carried out on further dangerous situations possibly caused after the cable is broken, and enough rescue time is reserved for rescue personnel by adjusting the threshold value, so that the huge loss caused by the cable breaking can be effectively reduced. The invention provides a cable breakage remote wireless monitoring and early warning system, which monitors the running state of a cable by setting an acceleration change threshold value of the cable, and warns about breakage condition in time by wireless transmission when the acceleration of the cable reaches the threshold value. The method has the advantages of accurate fault finding, small error and high efficiency, reduces the fault loss for cable fault users, reduces the cable fault rescue cost, and greatly improves the cable fault detection efficiency.
Drawings
Fig. 1 is a system block diagram of a preferred embodiment of the present invention.
The meaning of each label in the figure is: 100. an acquisition module; 200. a processing module; 300. an analysis module; 400. an early warning module; 500. and a wireless transmission module.
Detailed Description
It should be noted that, under the condition of no conflict, the embodiments of the present embodiments and features in the embodiments may be combined with each other, and the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a preferred embodiment of the present invention provides a cable breakage remote wireless monitoring and early warning system, comprising:
the acquisition module 100: the cable-related data monitoring and collecting device is used for monitoring and collecting cable-related data through the collecting device;
the processing module 200: the system is used for preprocessing the collected cable related data;
analysis module 300: the method is used for carrying out cable state analysis processing on the preprocessed cable related data based on an improved optical flow method;
early warning module 400: and the system is used for judging and early warning the cable state according to the analysis result of the analysis module 300.
A wireless transmission module 500 is also included for wirelessly transmitting cable related data and cable status.
The cable related data includes cable operation data, cable operation image data, and cable operation environment data.
The processing module 200 performs data filling and data cleaning on the collected cable related data.
In the analysis module 300, the cable is marked, and the feature extraction and feature tracking are performed on the mark on the cable based on the improved optical flow method.
In the analysis module 300, a fixed length is taken on the cable to perform marking, a maximum length of the cable when the marked length is subjected to unrecoverable deformation is measured, an acceleration change value of the cable when the cable is broken is measured, a maximum length threshold of the cable is set according to the maximum length, and an acceleration change threshold is set according to the acceleration change value.
In the improved optical flow method, two frames of two-dimensional gray images of the same mark point of the cable are provided with I and J, and gray values of each pixel point on the images are defined as follows:
Figure SMS_66
；
wherein ,
Figure SMS_68
is the coordinates of the pixel points on the cable image; />
Figure SMS_71
and />
Figure SMS_74
All represent cable images +.>
Figure SMS_69
Upper pixel +.>
Figure SMS_72
Gray values of (2); />
Figure SMS_73
and />
Figure SMS_75
All represent cable images +.>
Figure SMS_67
Upper pixel dot->
Figure SMS_70
Gray values of (2); />
Selecting characteristic pixel points
Figure SMS_78
And pixel dot->
Figure SMS_80
Feature pixel dot->
Figure SMS_83
For image->
Figure SMS_77
The position coordinates of the pixel points of (a) are as follows
Figure SMS_81
，/>
Figure SMS_85
For image->
Figure SMS_86
The position coordinates of the matching characteristic pixel points are +.>
Figure SMS_76
，/>
Figure SMS_84
，/>
Figure SMS_87
Point +.>
Figure SMS_88
The change values in the x-axis and y-axis when a new pixel is reached are set to the point +.>
Figure SMS_79
And (4) point->
Figure SMS_82
The gray value difference between the two is the smallest, namely:
Figure SMS_89
；
wherein ,
Figure SMS_90
and />
Figure SMS_91
Respectively represent characteristic pixel points->
Figure SMS_92
And feature pixel dot->
Figure SMS_93
Gray values of (2);
setting up points
Figure SMS_94
Is +.>
Figure SMS_95
Taking any integer +.>
Figure SMS_96
Solving for the optical flow velocity vector +.>
Figure SMS_97
Vector->
Figure SMS_98
Satisfy residual function->
Figure SMS_99
Minimum:
Figure SMS_100
；
wherein the value range is
Figure SMS_101
。
In the improved optical flow method, hierarchical sampling compression is carried out through a pyramid hierarchical algorithm.
In the pyramid layering algorithm, a pyramid model is provided with L layers
Figure SMS_102
Setting an image scaling factor
Figure SMS_103
Definitions->
Figure SMS_104
Is the pixel point on the cable image +.>
Figure SMS_105
Coordinates at layer L:
Figure SMS_106
；
is provided with
Figure SMS_107
Is a layer 0 cable image, i.e. +.>
Figure SMS_108
For the original cable image in the pyramid, the resolution is highest, and the golden word is calculated by a recursive algorithmTower cable image information:
Figure SMS_109
；
wherein ,
Figure SMS_110
，/>
Figure SMS_111
，/>
Figure SMS_112
and />
Figure SMS_113
Width and height of the cable image for layer L-1;
l-layer pixel point
Figure SMS_114
Corresponding velocity vector>
Figure SMS_115
The minimum residual function of the layer L cable image is satisfied, namely:
Figure SMS_116
；
wherein ,
Figure SMS_117
，/>
Figure SMS_118
width and height of the layer L cable image; />
Figure SMS_119
Is an initial optical flow vector; />
Obtaining equivalent solution for the above derivation
Figure SMS_120
：
Figure SMS_121
；
wherein ,
Figure SMS_122
is a spatial gradient matrix>
Figure SMS_123
Is a mismatch matrix:
Figure SMS_124
；
Figure SMS_125
；
velocity vector of pixel point
Figure SMS_126
Speed size +.>
Figure SMS_127
And movement angle->
Figure SMS_128
The method comprises the following steps:
Figure SMS_129
；
Figure SMS_130
；
and calculating and obtaining the cable motion acceleration based on the cable speed, the motion direction and the interval time of two-dimensional gray images, and continuously monitoring.
The early warning module 400 monitors the cable state according to the analysis result of the analysis module, and when the maximum length of the monitored cable reaches or exceeds a threshold value or the movement acceleration of the cable reaches an acceleration change threshold value, the wireless transmission module 500 sends out cable breakage early warning.
In this embodiment, the acquisition module 100 acquires cable operation data, cable image data and environmental data,the processing module 200 performs preprocessing on the collected cable operation data and cable image data, the analysis module 300 analyzes the cable state according to the data obtained by processing of the processing module 200, the fixed length on the cable is exemplified by 20 meters, the maximum length threshold value is set to be 0.6 meters, the acceleration change value when the cable breaks is set to be 0.5cm/s, and the acceleration change value is set to be 0.4cm/s. Respectively carrying out image acquisition on the marking points A and B on two sides and carrying out image acquisition on the marking points B and the pixel points
Figure SMS_131
For image->
Figure SMS_135
The position coordinates of the pixel points are +.>
Figure SMS_136
，/>
Figure SMS_132
For image->
Figure SMS_134
The position coordinates of the matching pixel points are +.>
Figure SMS_137
According to the constant rule of brightness, point +.>
Figure SMS_138
And (4) point->
Figure SMS_133
The gray value difference between the two is the smallest, namely:
Figure SMS_139
；
setting up points
Figure SMS_140
Is +.>
Figure SMS_141
Taking any integer +.>
Figure SMS_142
Solving for the optical flow velocity vector +.>
Figure SMS_143
Vector->
Figure SMS_144
Satisfy residual function->
Figure SMS_145
Minimum:
Figure SMS_146
；
wherein the value range is
Figure SMS_147
。
The pyramid model can convert large displacement motion in an image into small displacement motion, can accurately capture mark points of pixel points, is provided with 8 layers, and is used as an image scaling factor
Figure SMS_148
Definition +.>
Figure SMS_149
Coordinates of the pixel point on the cable image at the 8 th layer:
Figure SMS_150
；
is provided with
Figure SMS_151
Is a layer 0 cable image, i.e. +.>
Figure SMS_152
For the original cable image in the pyramid, the resolution is highest, and the information of each layer of cable image of the pyramid is calculated through a recursive algorithm:
Figure SMS_153
；
wherein ,
Figure SMS_154
，/>
Figure SMS_155
，/>
Figure SMS_156
and />
Figure SMS_157
Width and height of the cable image for layer L-1;
layer 8 pixel point
Figure SMS_158
Corresponding velocity vector>
Figure SMS_159
The minimum function of the residual error of the layer 8 cable image is satisfied, namely:
Figure SMS_160
；
wherein ,
Figure SMS_161
，/>
Figure SMS_162
width and height for layer 8 cable images; />
Figure SMS_163
Is an initial optical flow vector;
obtaining equivalent solution for the above derivation
Figure SMS_164
：
Figure SMS_165
；
wherein ,
Figure SMS_166
is a spatial gradient matrix>
Figure SMS_167
Is a mismatch matrix
Figure SMS_168
；/>
Figure SMS_169
；
Obtaining the velocity vector of the pixel point
Figure SMS_170
Its speed size +.>
Figure SMS_171
And movement angle->
Figure SMS_172
And simultaneously, calculating and obtaining the acceleration of the pixel point according to the interval time of the two frames of pictures, monitoring the acceleration of the pixel point, and sending out cable breakage early warning when the monitored acceleration change value reaches 0.4cm/s or the maximum length of the cable exceeds 20.5 meters.
Meanwhile, whether the environment data influence the normal operation of the cable or not is judged according to the environment data and the speed variable of the cable in other directions, and the situation that the cable is possibly broken due to the influence on the operation of the cable is timely transmitted and early-warned through the wireless transmission module 500.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. Cable fracture remote wireless monitoring early warning system, its characterized in that: comprising the following steps:
acquisition module (100): the cable-related data monitoring and collecting device is used for monitoring and collecting cable-related data through the collecting device;
processing module (200): the system is used for preprocessing the collected cable related data;
analysis module (300): the method is used for carrying out cable state analysis processing on the preprocessed cable related data based on an improved optical flow method;
early warning module (400): and the system is used for judging and early warning the cable state according to the analysis result of the analysis module (300).
2. The cable break remote wireless monitoring and early warning system according to claim 1, wherein: the wireless transmission module (500) is also included for wirelessly transmitting cable related data and cable status.
3. The cable break remote wireless monitoring and early warning system according to claim 2, wherein: the cable related data includes cable operation data, cable operation image data, and cable operation environment data.
4. The cable break remote wireless monitoring and early warning system according to claim 3, wherein: the processing module (200) performs data filling and data cleaning on the collected cable related data.
5. The cable break remote wireless monitoring and early warning system according to claim 4, wherein: in the analysis module (300), marks are made on the cable, and features are extracted and tracked on the marks on the cable based on an improved optical flow method.
6. The cable break remote wireless monitoring and early warning system according to claim 5, wherein: in the analysis module (300), a fixed length is taken on the cable for marking, the maximum length of the cable when the marked length of the cable is irrecoverable deformed is measured, meanwhile, the acceleration change value of the cable when the cable is broken is measured, the maximum length threshold of the cable is set according to the maximum length, and the acceleration change threshold is set according to the acceleration change value.
7. The cable break remote wireless monitoring and early warning system according to claim 6, wherein: in the improved optical flow method, two frames of two-dimensional gray images of the same mark point of the cable are provided with I and J, and gray values of each pixel point on the images are defined as follows:
Figure QLYQS_1
；
wherein ,
Figure QLYQS_2
is the coordinates of the pixel points on the cable image; />
Figure QLYQS_7
and />
Figure QLYQS_9
All represent cable images +.>
Figure QLYQS_4
Upper pixel point
Figure QLYQS_6
Gray values of (2); />
Figure QLYQS_8
and />
Figure QLYQS_10
All represent cable images +.>
Figure QLYQS_3
Upper pixel dot->
Figure QLYQS_5
Gray values of (2);
selecting characteristic pixel points
Figure QLYQS_11
And pixel dot->
Figure QLYQS_18
Feature pixel dot->
Figure QLYQS_21
For image->
Figure QLYQS_14
The position coordinates of the pixel points of (a) are as follows
Figure QLYQS_15
，/>
Figure QLYQS_20
For image->
Figure QLYQS_23
The position coordinates of the matching characteristic pixel points are +.>
Figure QLYQS_12
，/>
Figure QLYQS_16
，/>
Figure QLYQS_19
Point +.>
Figure QLYQS_22
The change values in the x-axis and y-axis when a new pixel is reached are set to the point +.>
Figure QLYQS_13
And (4) point->
Figure QLYQS_17
The gray value difference between the two is the smallest, namely:
Figure QLYQS_24
；
wherein ,
Figure QLYQS_25
and />
Figure QLYQS_26
Respectively represent characteristic pixel points->
Figure QLYQS_27
And feature pixel dot->
Figure QLYQS_28
Gray values of (2);
setting up points
Figure QLYQS_29
Is +.>
Figure QLYQS_30
Taking any integer +.>
Figure QLYQS_31
Solving for the optical flow velocity vector +.>
Figure QLYQS_32
Vector then
Figure QLYQS_33
Satisfy residual function->
Figure QLYQS_34
Minimum: />
Figure QLYQS_35
；
Wherein the value range is
Figure QLYQS_36
。
8. The cable break remote wireless monitoring and early warning system according to claim 7, wherein: in the improved optical flow method, hierarchical sampling compression is carried out through a pyramid hierarchical algorithm.
9. The cable break remote wireless monitoring and early warning system according to claim 8, wherein: in the pyramid layering algorithm, a pyramid model is provided with L layers
Figure QLYQS_37
Setting an image scaling factor +.>
Figure QLYQS_38
Definitions->
Figure QLYQS_39
Is the pixel point on the cable image +.>
Figure QLYQS_40
Coordinates at layer L:
Figure QLYQS_41
；
is provided with
Figure QLYQS_42
Is a layer 0 cable image, i.e. +.>
Figure QLYQS_43
For the original cable image in the pyramid, the resolution is highest, and the information of each layer of cable image of the pyramid is calculated through a recursive algorithm:
Figure QLYQS_44
；
wherein ,
Figure QLYQS_45
，/>
Figure QLYQS_46
，/>
Figure QLYQS_47
and />
Figure QLYQS_48
Width and height of the cable image for layer L-1;
l-layer pixel point
Figure QLYQS_49
Corresponding velocity vector>
Figure QLYQS_50
The minimum residual function of the layer L cable image is satisfied, namely:
Figure QLYQS_51
；
wherein ,
Figure QLYQS_52
，/>
Figure QLYQS_53
width and height of the layer L cable image; />
Figure QLYQS_54
Is an initial optical flow vector;
obtaining equivalent solution for the above derivation
Figure QLYQS_55
：
Figure QLYQS_56
；
wherein ,
Figure QLYQS_57
is a spatial gradient matrix>
Figure QLYQS_58
Is a mismatch matrix:
Figure QLYQS_59
；/>
Figure QLYQS_60
；
velocity vector of pixel point
Figure QLYQS_61
Speed size +.>
Figure QLYQS_62
And movement angle->
Figure QLYQS_63
The method comprises the following steps:
Figure QLYQS_64
；
Figure QLYQS_65
；
and calculating and obtaining the cable motion acceleration based on the cable speed, the motion direction and the interval time of two-dimensional gray images, and continuously monitoring.
10. The cable break remote wireless monitoring and early warning system according to claim 1, wherein: the early warning module (400) monitors the cable state according to the analysis result of the analysis module, and when the maximum length of the monitored cable reaches or exceeds a threshold value or the movement acceleration of the cable reaches an acceleration change threshold value, the wireless transmission module (500) sends out cable breakage early warning.
CN202310368468.5A 2023-04-10 2023-04-10 Cable fracture remote wireless monitoring and early warning system Pending CN116092277A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
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Application publication date: 20230509