CN114973007A - High-voltage line breakage monitoring method based on gray level run matrix - Google Patents

High-voltage line breakage monitoring method based on gray level run matrix Download PDF

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CN114973007A
CN114973007A CN202210924245.8A CN202210924245A CN114973007A CN 114973007 A CN114973007 A CN 114973007A CN 202210924245 A CN202210924245 A CN 202210924245A CN 114973007 A CN114973007 A CN 114973007A
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林少娜
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Qidong Hengrui Power Supply Technology Co ltd
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Abstract

The invention relates to the technical field of image data processing, in particular to a high-voltage line breakage monitoring method based on a gray level run matrix. The method comprises the steps of obtaining gray level co-occurrence matrixes in different point pair building directions in a gray level image after obtaining a gray level image of a high-voltage cable taken down, determining the probability of distribution of the high-voltage cable in each direction according to the probability of occurrence of the point pair of which two gray level values in the different gray level co-occurrence matrixes are gray level values of a high-voltage cable region, respectively obtaining gray level run matrixes of which the gray level values are the gray level values of the high-voltage cable region in the building directions of each point pair, calculating the total length of each gray level run matrix, calculating the total length of the high-voltage cable in the direction in which the high-voltage cable is not located at the maximum under normal and actual conditions according to the total length of the gray level run matrixes corresponding to the building directions of each point pair, comparing the relationship of the two total lengths, and finishing the judgment of broken line. According to the method, manual field operation is not needed, automatic judgment is performed after the high-voltage cable depression image is shot, and disconnection monitoring is safe and efficient.

Description

High-voltage line breakage monitoring method based on gray level run matrix
Technical Field
The invention relates to the technical field of image data processing, in particular to a high-voltage line breakage monitoring method based on a gray level run matrix.
Background
Since the second industrial revolution and the next time of the electric age, electric energy is becoming an indispensable part of daily life. The power generation mode at the present stage is still mainly thermal power generation, water power, wind power generation and a nuclear power station are assisted, high-voltage cables are adopted for transmission in various power generation modes during electric energy transmission, long-distance and large-range high-voltage cables are laid in a waste suburb area, once a high-voltage cable is in a section, personnel are usually prohibited from entering the area within 20 meters of a breaking point due to the overhigh voltage, and meanwhile, the high-voltage cable bears an important task of power transmission, so that immeasurable loss can be caused if the high-voltage cable cannot be found in time.
Therefore, the prior art needs to safely and efficiently complete the disconnection monitoring of the high-voltage cable.
Disclosure of Invention
In order to safely and efficiently complete the disconnection monitoring of the high-voltage cable, the invention provides a method for monitoring the disconnection of the high-voltage cable based on a gray level run matrix, which adopts the following technical scheme:
the invention discloses a high-voltage line breakage monitoring method based on a gray level run matrix, which comprises the following steps of:
collecting a high-voltage cable down-shot image and carrying out gray processing, carrying out foreground segmentation on the obtained gray image, setting the gray value of a foreground area where the high-voltage cable is located as 1 and the gray value of a background area as 0, and obtaining a binary image;
respectively constructing point pairs in the horizontal direction of 0 degrees in the binary image and correspondingly obtaining a first gray level co-occurrence matrix, constructing point pairs in the opposite angular line direction of 45 degrees and correspondingly obtaining a second gray level co-occurrence matrix, constructing point pairs in the vertical direction of 90 degrees and correspondingly obtaining a third gray level co-occurrence matrix, and constructing point pairs in the opposite angular line direction of 135 degrees and correspondingly obtaining a fourth gray level co-occurrence matrix;
sequentially calculating the probability value of the point pairs (1, 1) in the first to the fourth gray level co-occurrence matrixes
Figure 100002_DEST_PATH_IMAGE001
、
Figure 505407DEST_PATH_IMAGE002
、
Figure 100002_DEST_PATH_IMAGE003
And
Figure 528727DEST_PATH_IMAGE004
sorting the four probability values in descending order to obtain a sorting order of the four point pair construction directions corresponding to the four probability values, and recording the four sorted point pair construction directions as the sorting order
Figure 100002_DEST_PATH_IMAGE005
、
Figure 363828DEST_PATH_IMAGE006
、
Figure 100002_DEST_PATH_IMAGE007
And
Figure 971044DEST_PATH_IMAGE008
；
according to the point pair construction direction
Figure 755460DEST_PATH_IMAGE005
、
Figure 808735DEST_PATH_IMAGE006
、
Figure 927870DEST_PATH_IMAGE007
And
Figure 413209DEST_PATH_IMAGE008
respectively obtaining four gray level run matrixes with the gray level value of 1 on the binary image, and then calculating the total length of the four gray level run matrixes
Figure 100002_DEST_PATH_IMAGE009
、
Figure 756859DEST_PATH_IMAGE010
、
Figure 100002_DEST_PATH_IMAGE011
And
Figure 590823DEST_PATH_IMAGE012
and calculating to obtain the angle value of the distribution direction of the high-voltage cable or the complementary angle of the angle value of the distribution direction of the high-voltage cable
Figure 100002_DEST_PATH_IMAGE013
From
Figure 134937DEST_PATH_IMAGE005
、
Figure 404726DEST_PATH_IMAGE009
And
Figure 944160DEST_PATH_IMAGE013
calculating the length of the high-voltage cable in the distribution direction, and then calculating the length of the high-voltage cable in the normal condition according to the length of the high-voltage cable in the distribution direction
Figure 89971DEST_PATH_IMAGE006
、
Figure 714856DEST_PATH_IMAGE007
And
Figure 541998DEST_PATH_IMAGE008
total length in three directions of
Figure 201518DEST_PATH_IMAGE010
、
Figure 973689DEST_PATH_IMAGE011
And
Figure 39866DEST_PATH_IMAGE012
calculating the actual high-voltage cable
Figure 716703DEST_PATH_IMAGE006
、
Figure 433993DEST_PATH_IMAGE007
And
Figure 656026DEST_PATH_IMAGE008
total length in three directions;
according to the normal condition and the actual condition of the high-voltage cable
Figure 458766DEST_PATH_IMAGE006
、
Figure 690027DEST_PATH_IMAGE007
And
Figure 524473DEST_PATH_IMAGE008
and judging whether the high-voltage cable is broken or not by the total lengths in the three directions.
The invention has the beneficial effects that:
the method of the invention comprises the steps of obtaining an image of a high-voltage cable through overhead shooting and carrying out gray scale processing, firstly obtaining gray scale co-occurrence matrixes in different dot pair construction directions from a gray scale image, determining the sequence of probability distribution of the high-voltage cable in each direction according to the probability of occurrence of dot pairs of which two dot gray scale values in the different gray scale co-occurrence matrixes are gray scale values of a high-voltage cable area, continuously obtaining run matrixes of which the gray scale values are the gray scale values of the high-voltage cable area in each dot pair construction direction respectively, calculating the total length of the high-voltage cable in the direction in which the high-voltage cable area is not located at the maximum in the normal condition according to the total length of the gray scale run matrixes corresponding to the dot pair construction directions, calculating the total length of the high-voltage cable in the direction in which the high-voltage cable is not located at the maximum in the actual condition, and comparing the relationship of the corresponding total lengths in the two conditions, and finishing the judgment of the disconnection of the high-voltage cable. The method does not need manual field operation, the whole process is automatically completed after the high-voltage cable is shot to obtain the high-voltage cable depression image, and safe and efficient high-voltage cable disconnection monitoring is realized.
Further, the total length of the four gray level run matrix is calculated
Figure 166675DEST_PATH_IMAGE009
、
Figure 941865DEST_PATH_IMAGE010
、
Figure 960505DEST_PATH_IMAGE011
And
Figure 652386DEST_PATH_IMAGE012
the method comprises the following steps:
calculating a build angle value
Figure 685064DEST_PATH_IMAGE005
Total length of the corresponding gray run matrix:
Figure 100002_DEST_PATH_IMAGE015
wherein the content of the first and second substances,
Figure 917856DEST_PATH_IMAGE009
to construct an angle value
Figure 694182DEST_PATH_IMAGE005
The total length of the corresponding gray scale run matrix,
Figure 240570DEST_PATH_IMAGE016
to construct an angle value
Figure 958996DEST_PATH_IMAGE005
The longest length in the corresponding gray scale run matrix,
Figure 100002_DEST_PATH_IMAGE017
represents the number of occurrences of length k;
according to the constructed angle value
Figure 158378DEST_PATH_IMAGE005
The total length calculation method of the corresponding gray level run matrix respectively calculates to obtain the construction angle value
Figure 456504DEST_PATH_IMAGE006
、
Figure 122977DEST_PATH_IMAGE007
And
Figure 28617DEST_PATH_IMAGE008
total length of the corresponding gray scale run matrix
Figure 780541DEST_PATH_IMAGE010
、
Figure 695407DEST_PATH_IMAGE011
And
Figure 219317DEST_PATH_IMAGE012
。
further, calculating the distribution direction angle value of the high-voltage cable or the complementary angle of the distribution direction angle value of the high-voltage cable
Figure 748387DEST_PATH_IMAGE013
The method comprises the following steps:
Figure 100002_DEST_PATH_IMAGE019
wherein, the first and the second end of the pipe are connected with each other,
Figure 394132DEST_PATH_IMAGE013
representing the distribution direction angle value or the supplementary angle of the distribution direction angle value of the high voltage cable,
Figure 96378DEST_PATH_IMAGE003
representing a probability value of occurrence of the point pair (1, 1) in the third gray level co-occurrence matrix,
Figure 19334DEST_PATH_IMAGE001
representing the probability value of the occurrence of the point pair (1, 1) in the first gray level co-occurrence matrix.
Further, by
Figure 739814DEST_PATH_IMAGE005
、
Figure 263068DEST_PATH_IMAGE009
And
Figure 722999DEST_PATH_IMAGE013
calculating the length of the high-voltage cable in the distribution direction, and then calculating the length of the high-voltage cable in the normal condition according to the length of the high-voltage cable in the distribution direction
Figure 952992DEST_PATH_IMAGE006
、
Figure 886182DEST_PATH_IMAGE007
And
Figure 585148DEST_PATH_IMAGE008
the total length in three directions is given by:
(1) if, if
Figure 632126DEST_PATH_IMAGE020
The distribution direction range of the high-voltage cable is
Figure 100002_DEST_PATH_IMAGE021
At this time, the length of the high-voltage cable in the distribution direction is as follows:
Figure 100002_DEST_PATH_IMAGE023
wherein, the first and the second end of the pipe are connected with each other,
Figure 778942DEST_PATH_IMAGE024
to represent
Figure 148613DEST_PATH_IMAGE020
Length of the high-voltage cable in the distribution direction;
by length
Figure 334874DEST_PATH_IMAGE024
Determining that the high voltage cable is in normal condition
Figure 117367DEST_PATH_IMAGE006
、
Figure 587532DEST_PATH_IMAGE007
And
Figure 613256DEST_PATH_IMAGE008
total length over three angles:
Figure 270503DEST_PATH_IMAGE026
wherein the content of the first and second substances,
Figure 100002_DEST_PATH_IMAGE027
indicates a normal condition and
Figure 328457DEST_PATH_IMAGE020
the high-voltage cable is arranged in
Figure 656058DEST_PATH_IMAGE006
、
Figure 39635DEST_PATH_IMAGE007
And
Figure 997227DEST_PATH_IMAGE008
total length over three angles;
(2) if, if
Figure 124451DEST_PATH_IMAGE028
The distribution direction range of the cable is
Figure 100002_DEST_PATH_IMAGE029
At this time, the length of the high-voltage cable in the distribution direction is as follows:
Figure 100002_DEST_PATH_IMAGE031
wherein the content of the first and second substances,
Figure 159754DEST_PATH_IMAGE032
to represent
Figure 979811DEST_PATH_IMAGE028
Length of the high-voltage cable in the distribution direction;
by length
Figure 877229DEST_PATH_IMAGE032
Determining that the high voltage cable is in normal condition
Figure 355615DEST_PATH_IMAGE006
、
Figure 654878DEST_PATH_IMAGE007
And
Figure 383187DEST_PATH_IMAGE008
total length over three angles:
Figure 518633DEST_PATH_IMAGE034
wherein the content of the first and second substances,
Figure 100002_DEST_PATH_IMAGE035
indicates a normal condition and
Figure 705770DEST_PATH_IMAGE028
the high-voltage cable is arranged in
Figure 344693DEST_PATH_IMAGE006
、
Figure 568869DEST_PATH_IMAGE007
And
Figure 172370DEST_PATH_IMAGE008
total length over three angles;
(3) if, if
Figure 195821DEST_PATH_IMAGE036
The distribution direction range of the cable is
Figure 100002_DEST_PATH_IMAGE037
At this time, the length of the high-voltage cable in the distribution direction is as follows:
Figure 100002_DEST_PATH_IMAGE039
wherein the content of the first and second substances,
Figure 797573DEST_PATH_IMAGE040
represent
Figure 192651DEST_PATH_IMAGE036
Length of the high-voltage cable in the distribution direction;
by length
Figure 289307DEST_PATH_IMAGE040
Determining that the high voltage cable is in normal condition
Figure 850870DEST_PATH_IMAGE006
、
Figure 979232DEST_PATH_IMAGE007
And
Figure 545211DEST_PATH_IMAGE008
total length over three angles:
Figure 876967DEST_PATH_IMAGE042
wherein the content of the first and second substances,
Figure 100002_DEST_PATH_IMAGE043
indicates a normal condition and
Figure 964525DEST_PATH_IMAGE036
the high-voltage cable is arranged in
Figure 166968DEST_PATH_IMAGE006
、
Figure 903848DEST_PATH_IMAGE007
And
Figure 972167DEST_PATH_IMAGE008
total length over three angles;
(4) if, if
Figure 141112DEST_PATH_IMAGE044
The distribution direction range of the cable is
Figure 100002_DEST_PATH_IMAGE045
At this time, the length of the high-voltage cable in the distribution direction is as follows:
Figure 100002_DEST_PATH_IMAGE047
wherein the content of the first and second substances,
Figure 840471DEST_PATH_IMAGE048
to represent
Figure 420357DEST_PATH_IMAGE044
Length of the high-voltage cable in the distribution direction;
by length
Figure 975972DEST_PATH_IMAGE048
Determining that the high voltage cable is in normal condition
Figure 745345DEST_PATH_IMAGE006
、
Figure 437226DEST_PATH_IMAGE007
And
Figure 450663DEST_PATH_IMAGE008
total length over three angles:
Figure 41044DEST_PATH_IMAGE050
wherein the content of the first and second substances,
Figure 100002_DEST_PATH_IMAGE051
indicates a normal condition and
Figure 722430DEST_PATH_IMAGE044
the high-voltage cable is arranged in
Figure 3239DEST_PATH_IMAGE006
、
Figure 206818DEST_PATH_IMAGE007
And
Figure 474376DEST_PATH_IMAGE008
total length over three angles.
Further, by
Figure 100398DEST_PATH_IMAGE010
、
Figure 517604DEST_PATH_IMAGE011
And
Figure 875773DEST_PATH_IMAGE012
calculating the actual high-voltage cable
Figure 627697DEST_PATH_IMAGE006
、
Figure 542564DEST_PATH_IMAGE007
And
Figure 60614DEST_PATH_IMAGE008
the total length in three directions is given by:
Figure 100002_DEST_PATH_IMAGE053
wherein the content of the first and second substances,
Figure 245477DEST_PATH_IMAGE054
indicating the actual condition of the high-voltage cable
Figure 235429DEST_PATH_IMAGE006
、
Figure 937675DEST_PATH_IMAGE007
And
Figure 581670DEST_PATH_IMAGE008
total length over three angles.
Further, the high-voltage cable is arranged under the normal condition and the actual condition
Figure 297954DEST_PATH_IMAGE006
、
Figure 290049DEST_PATH_IMAGE007
And
Figure 546718DEST_PATH_IMAGE008
the method for judging whether the high-voltage cable is broken or not by the total length in three directions comprises the following steps:
judgment of
Figure 100002_DEST_PATH_IMAGE055
And
Figure 245553DEST_PATH_IMAGE054
if the magnitude relationship between them is
Figure 913164DEST_PATH_IMAGE056
The abnormal gray level run length in the binary image is shown, the high-voltage cable disconnection fault exists,
Figure 143288DEST_PATH_IMAGE055
is composed of
Figure 184406DEST_PATH_IMAGE027
、
Figure 613114DEST_PATH_IMAGE035
、
Figure 451625DEST_PATH_IMAGE043
And
Figure 434625DEST_PATH_IMAGE051
one of the above-mentioned (b) is,
Figure 100002_DEST_PATH_IMAGE057
is an error allowance value.
Further, after the binary image is obtained, morphological dilation operation is performed on the binary image.
Drawings
Fig. 1 is a flow chart of the method for monitoring the disconnection of the high-voltage line based on the gray scale run matrix.
Detailed Description
The following describes a method for monitoring disconnection of a high-voltage line based on a gray scale run matrix in detail with reference to the accompanying drawings and embodiments.
The method comprises the following steps:
the embodiment of the invention relates to a high-voltage line breakage monitoring method based on a gray level run matrix, the whole flow of which is shown in figure 1, and the specific process is as follows:
1. and collecting a high-voltage cable depression image, carrying out gray processing, carrying out foreground segmentation on the obtained gray image and obtaining a binary image.
Utilize unmanned aerial vehicle to take photo by plane the high-voltage cable in this embodiment, obtain the image of bowing of shooting within range high-voltage electric wire, the cable between two high-voltage cable framves all satisfies parallel relation, on the image of bowing that the aerial photograph obtained, the cable part should be several parallel and continuous straight lines, utilizes unmanned aerial vehicle to shoot the cable between per two high-voltage cable framves.
The method comprises the steps of performing graying processing on a high-voltage cable image obtained by shooting to obtain a grayscale image, and then performing self-adaptive threshold segmentation on the grayscale image by using an OTSU Otsu method. After determining the foreground part of the gray image, setting the gray value of the foreground part as 1, and setting the gray value of the rest part as 0, so as to obtain a binary image after binarization processing, wherein the foreground part with the gray value of 1 is a target area in the binary image, namely an area where a high-voltage cable is located.
2. And respectively carrying out point pair construction on the binary image according to different point pair construction directions, generating a plurality of gray level co-occurrence matrixes with the same number as the point pair construction directions, and finishing the judgment of the extension direction of the high-voltage cable according to the probability of the occurrence of the point pairs of which the gray values of the two points in each gray level co-occurrence matrix are the gray values of the target area in the binary image.
In consideration of noise possibly existing in the binary image, in the embodiment, before the gray level co-occurrence matrix is constructed on the binary image, an expansion operation is additionally performed on a target area in the binary image, namely, an area where a high-voltage cable is located, so as to eliminate the noise in the target area.
After the expansion operation, the implementation constructs the point pairs of the pixel points in the binary image according to the four point pair constructing directions, and correspondingly generates the gray level co-occurrence matrix of the binary image in the point pair constructing direction after completing the point pair construction of the pixel points in the binary image according to each point pair constructing direction.
Specifically, in this embodiment, different differential values are set to implement construction of a point pair in different construction directions for a pixel point in a binary image, where a differential value is (1, 0), the point pair is constructed in a horizontal direction of 0 ° and is recorded as a first direction, where a differential value is (1, 1), the point pair is constructed in a right diagonal direction of 45 ° and is recorded as a second direction, where a differential value is (0, 1), the point pair is constructed in a vertical direction of 90 ° and is recorded as a third direction, and where a differential value is (-1, 1), the point pair is constructed in a right diagonal direction of 135 ° and is recorded as a fourth direction.
Respectively obtaining gray level co-occurrence matrixes of four binary images according to four construction directions, and co-occurrence the four gray levelsThe probability of occurrence of the point pair (1, 1) in the matrix or the occupation ratio of the point pair (1, 1) in all the point pairs of each gray level co-occurrence matrix are respectively recorded as
Figure 688889DEST_PATH_IMAGE001
、
Figure 424632DEST_PATH_IMAGE002
、
Figure 247095DEST_PATH_IMAGE003
、
Figure 451811DEST_PATH_IMAGE004
Judging the occurrence probability value of the point pair (1, 1) in the four gray level co-occurrence matrixes
Figure 840592DEST_PATH_IMAGE001
、
Figure 915995DEST_PATH_IMAGE002
、
Figure 361889DEST_PATH_IMAGE003
、
Figure 53901DEST_PATH_IMAGE004
The general distribution direction, or the extending direction, of the high-voltage cable can be determined by the following specific decisions:
i, if
Figure 774602DEST_PATH_IMAGE001
The maximum value indicates that the distribution direction of the high-voltage cables is in the range of-22.5 degrees to 22.5 degrees, and the distribution direction of the high-voltage cables is considered to be the horizontal direction of 0 degrees;
II, if
Figure 235670DEST_PATH_IMAGE002
The maximum value indicates that the distribution direction of the high-voltage cables is in the range of 22.5 degrees to 67.5 degrees, and the distribution direction of the high-voltage cables is considered to be the direction of a right diagonal line of 45 degrees;
III if
Figure 586886DEST_PATH_IMAGE003
The maximum value indicates that the distribution direction of the high-voltage cables is in the range of 67.5 degrees to 112.5 degrees, and the distribution direction of the high-voltage cables is considered to be the vertical direction of 90 degrees;
IV, if
Figure 500615DEST_PATH_IMAGE004
The maximum value indicates that the distribution direction of the high voltage cables is in the range of 112.5 ° to 157.5 °, and the distribution direction of the high voltage cables is considered to be the anti-diagonal direction of 135 °.
Sequencing the compared probability values according to the sequence from large to small, and recording the construction angle values corresponding to the probability values sequenced from large to small as
Figure 775739DEST_PATH_IMAGE005
、
Figure 626668DEST_PATH_IMAGE006
、
Figure 633938DEST_PATH_IMAGE007
、
Figure 549811DEST_PATH_IMAGE008
。
3. And respectively constructing a gray run matrix with the gray value being the gray value of the target area in the binary image on the binary image according to different point pair construction directions, and judging whether the disconnection abnormality exists according to the relation between the total length values of the gray run matrices in each construction direction.
By constructing angle values
Figure 566308DEST_PATH_IMAGE005
、
Figure 47974DEST_PATH_IMAGE006
、
Figure 491725DEST_PATH_IMAGE007
、
Figure 894893DEST_PATH_IMAGE008
Then, four gray level run-length matrixes with gray level value of 1 can be respectively constructed on the binary image
Figure 449502DEST_PATH_IMAGE058
、
Figure DEST_PATH_IMAGE059
、
Figure 726288DEST_PATH_IMAGE060
And
Figure DEST_PATH_IMAGE061
，
Figure 527890DEST_PATH_IMAGE016
、
Figure 903508DEST_PATH_IMAGE062
、
Figure DEST_PATH_IMAGE063
and
Figure 448759DEST_PATH_IMAGE064
respectively, represent the longest length in the respective corresponding gray scale run matrix.
The distribution trend of the cable on the image is preliminarily determined by means of the gray level co-occurrence matrix, and the target area range is enlarged by expansion operation, so that the gray level co-occurrence matrix can be utilized
Figure 108279DEST_PATH_IMAGE001
And
Figure 893833DEST_PATH_IMAGE003
the values of (a) and (b), i.e. the components of the high-voltage cable in the horizontal direction and in the vertical direction, are determined by means of an inverse trigonometric functionSupplementary angle of the magnitude:
Figure 799822DEST_PATH_IMAGE019
wherein the content of the first and second substances,
Figure 961813DEST_PATH_IMAGE013
and the distribution direction angle value or the complementary angle of the distribution direction angle value of the high-voltage cable is represented.
Therefore it is provided with
Figure 210261DEST_PATH_IMAGE013
The angle value of the distribution direction or the complement angle of the angle value of the distribution direction of the high-voltage cable is obtained by the gray scale run matrix
Figure 432294DEST_PATH_IMAGE003
And
Figure 579242DEST_PATH_IMAGE001
are all non-negative numbers, and so result in what is calculated here
Figure 528612DEST_PATH_IMAGE013
A range of values of
Figure DEST_PATH_IMAGE065
But it is obvious that the direction of distribution of the high voltage cable also comprises
Figure 569250DEST_PATH_IMAGE066
So that the true high-voltage cable is distributed in the direction of
Figure 962185DEST_PATH_IMAGE013
Or
Figure DEST_PATH_IMAGE067
That is to say
Figure 989571DEST_PATH_IMAGE013
Distributing direction angle values or high-voltage cable branches for high-voltage cablesAnd distributing supplementary angles of the direction angle values.
Calculating a build angle value
Figure 539370DEST_PATH_IMAGE005
Total length of the corresponding gray run matrix:
Figure 513142DEST_PATH_IMAGE015
wherein the content of the first and second substances,
Figure 326246DEST_PATH_IMAGE009
to construct an angle value
Figure 385469DEST_PATH_IMAGE005
The total length of the corresponding gray scale run matrix,
Figure 676642DEST_PATH_IMAGE016
to construct an angle value
Figure 567238DEST_PATH_IMAGE005
The longest length in the corresponding gray scale run matrix,
Figure 301976DEST_PATH_IMAGE017
indicating the number of occurrences of length k.
Respectively obtaining the total length of the gray run matrix corresponding to the rest of the construction angle values according to the total length calculation method of the gray run matrix
Figure 829253DEST_PATH_IMAGE010
、
Figure 940429DEST_PATH_IMAGE011
And
Figure 934798DEST_PATH_IMAGE012
。
then according to the total length value
Figure 840438DEST_PATH_IMAGE009
And constructing an angle value
Figure 857941DEST_PATH_IMAGE005
And calculating the length of the high-voltage cable in the distribution direction:
(1) if, if
Figure 241649DEST_PATH_IMAGE020
Then, the distribution direction range of the high voltage cable is represented as
Figure 559367DEST_PATH_IMAGE021
Then, the length of the high-voltage cable in the distribution direction at this time is:
Figure 432645DEST_PATH_IMAGE068
wherein the content of the first and second substances,
Figure 953756DEST_PATH_IMAGE024
to represent
Figure 393352DEST_PATH_IMAGE020
The length of the high-voltage cable in the distribution direction.
By length
Figure 50729DEST_PATH_IMAGE024
It can be determined that the high-voltage cable is in normal condition
Figure 547439DEST_PATH_IMAGE006
、
Figure 555846DEST_PATH_IMAGE007
And
Figure 592941DEST_PATH_IMAGE008
total length over three angles:
Figure 370404DEST_PATH_IMAGE026
wherein the content of the first and second substances,
Figure 772436DEST_PATH_IMAGE027
indicates a normal condition and
Figure 799297DEST_PATH_IMAGE020
the high-voltage cable is arranged in
Figure 594078DEST_PATH_IMAGE006
、
Figure 472386DEST_PATH_IMAGE007
And
Figure 61630DEST_PATH_IMAGE008
total length over three angles.
(2) If, if
Figure 28318DEST_PATH_IMAGE028
Then the cable is distributed in the direction range of
Figure 361210DEST_PATH_IMAGE029
Then, the length of the high-voltage cable in the distribution direction at this time is:
Figure 893691DEST_PATH_IMAGE031
wherein the content of the first and second substances,
Figure 653837DEST_PATH_IMAGE032
to represent
Figure 373400DEST_PATH_IMAGE028
The length of the high-voltage cable in the distribution direction.
By length
Figure 978825DEST_PATH_IMAGE032
It can be determined that the high-voltage cable is in normal condition
Figure 837584DEST_PATH_IMAGE006
、
Figure 34210DEST_PATH_IMAGE007
And
Figure 257381DEST_PATH_IMAGE008
total length over three angles:
Figure DEST_PATH_IMAGE069
wherein the content of the first and second substances,
Figure 384606DEST_PATH_IMAGE035
indicates a normal condition and
Figure 94942DEST_PATH_IMAGE028
the high-voltage cable is arranged in
Figure 196890DEST_PATH_IMAGE006
、
Figure 359887DEST_PATH_IMAGE007
And
Figure 838273DEST_PATH_IMAGE008
total length over three angles.
(3) If, if
Figure 423623DEST_PATH_IMAGE036
Then the cable is distributed in the direction range of
Figure 758790DEST_PATH_IMAGE037
Then, the length of the high-voltage cable in the distribution direction at this time is:
Figure 409083DEST_PATH_IMAGE039
wherein the content of the first and second substances,
Figure 425580DEST_PATH_IMAGE040
to represent
Figure 110508DEST_PATH_IMAGE036
The length of the high-voltage cable in the distribution direction.
By length
Figure 554259DEST_PATH_IMAGE040
It can be determined that the high-voltage cable is in normal condition
Figure 957428DEST_PATH_IMAGE006
、
Figure 574354DEST_PATH_IMAGE007
And
Figure 864521DEST_PATH_IMAGE008
total length over three angles:
Figure 731370DEST_PATH_IMAGE042
wherein the content of the first and second substances,
Figure 841409DEST_PATH_IMAGE043
indicates a normal condition and
Figure 714556DEST_PATH_IMAGE036
the high-voltage cable is arranged in
Figure 859229DEST_PATH_IMAGE006
、
Figure 159629DEST_PATH_IMAGE007
And
Figure 22543DEST_PATH_IMAGE008
total length over three angles.
(4) If, if
Figure 230539DEST_PATH_IMAGE044
Then the cable is distributed in the direction range of
Figure 495299DEST_PATH_IMAGE045
Then, the length of the high-voltage cable in the distribution direction at this time is:
Figure 698091DEST_PATH_IMAGE070
wherein, the first and the second end of the pipe are connected with each other,
Figure 782722DEST_PATH_IMAGE048
to represent
Figure 997671DEST_PATH_IMAGE044
The length of the high-voltage cable in the distribution direction.
By length
Figure 913675DEST_PATH_IMAGE048
It can be determined that the high-voltage cable is in normal condition
Figure 306610DEST_PATH_IMAGE006
、
Figure 127804DEST_PATH_IMAGE007
And
Figure 897177DEST_PATH_IMAGE008
total length over three angles:
Figure DEST_PATH_IMAGE071
wherein the content of the first and second substances,
Figure 792321DEST_PATH_IMAGE051
indicates a normal condition and
Figure 608355DEST_PATH_IMAGE044
the high-voltage cable is arranged in
Figure 667578DEST_PATH_IMAGE006
、
Figure 224330DEST_PATH_IMAGE007
And
Figure 318188DEST_PATH_IMAGE008
total length over three angles.
After the total length of the high-voltage cable in the non-general distribution direction under the normal condition, namely under the condition of no disconnection fault, is obtained through calculation, the total length of the high-voltage cable in the non-general distribution direction under the actual condition is calculated according to actual data:
Figure 302193DEST_PATH_IMAGE072
wherein the content of the first and second substances,
Figure 848712DEST_PATH_IMAGE054
indicating the actual condition of the high-voltage cable
Figure 740314DEST_PATH_IMAGE006
、
Figure 688678DEST_PATH_IMAGE007
And
Figure 575076DEST_PATH_IMAGE008
total length over three angles.
Judgment of
Figure 608891DEST_PATH_IMAGE055
And
Figure 54916DEST_PATH_IMAGE054
if the magnitude relationship between them is
Figure 372633DEST_PATH_IMAGE056
Then, the gray level run length in the binary image is abnormal, namely, the disconnection fault of the high-voltage cable occurs, wherein
Figure 449174DEST_PATH_IMAGE055
Is composed of
Figure 688394DEST_PATH_IMAGE027
、
Figure 141372DEST_PATH_IMAGE035
、
Figure 313596DEST_PATH_IMAGE043
And
Figure 561038DEST_PATH_IMAGE051
one of the above-mentioned (b) is,
Figure 556063DEST_PATH_IMAGE057
the specific value is set by the monitoring personnel by experience, and is an error allowable value.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims (7)

1. A high-voltage line breakage monitoring method based on a gray level run matrix is characterized by comprising the following steps:
collecting a high-voltage cable down-shot image and carrying out gray processing, carrying out foreground segmentation on the obtained gray image, setting the gray value of a foreground area where the high-voltage cable is located as 1 and the gray value of a background area as 0, and obtaining a binary image;
respectively constructing point pairs in the horizontal direction of 0 degrees in the binary image and correspondingly obtaining a first gray level co-occurrence matrix, constructing point pairs in the opposite angular line direction of 45 degrees and correspondingly obtaining a second gray level co-occurrence matrix, constructing point pairs in the vertical direction of 90 degrees and correspondingly obtaining a third gray level co-occurrence matrix, and constructing point pairs in the opposite angular line direction of 135 degrees and correspondingly obtaining a fourth gray level co-occurrence matrix;
sequentially calculating the probability value of the point pairs (1, 1) in the first to the fourth gray level co-occurrence matrixes
Figure DEST_PATH_IMAGE001
、
Figure 484878DEST_PATH_IMAGE002
、
Figure DEST_PATH_IMAGE003
And
Figure 272093DEST_PATH_IMAGE004
sorting the four probability values in descending order to obtain a sorting order of the four point pair construction directions corresponding to the four probability values, and recording the four sorted point pair construction directions as the sorting order
Figure DEST_PATH_IMAGE005
、
Figure 355455DEST_PATH_IMAGE006
、
Figure DEST_PATH_IMAGE007
And
Figure 744848DEST_PATH_IMAGE008
；
according to the point pair construction direction
Figure 216150DEST_PATH_IMAGE005
、
Figure 831939DEST_PATH_IMAGE006
、
Figure 801817DEST_PATH_IMAGE007
And
Figure 186662DEST_PATH_IMAGE008
respectively obtaining four gray level run matrixes with the gray level value of 1 on the binary image, and then calculating the total length of the four gray level run matrixes
Figure DEST_PATH_IMAGE009
、
Figure 235390DEST_PATH_IMAGE010
、
Figure DEST_PATH_IMAGE011
And
Figure 977955DEST_PATH_IMAGE012
and calculating to obtain the angle value of the distribution direction of the high-voltage cable or the complementary angle of the angle value of the distribution direction of the high-voltage cable
Figure DEST_PATH_IMAGE013
From
Figure 265105DEST_PATH_IMAGE005
、
Figure 488145DEST_PATH_IMAGE009
And
Figure 786402DEST_PATH_IMAGE013
calculating the length of the high-voltage cable in the distribution direction, and then calculating the length of the high-voltage cable in the normal condition according to the length of the high-voltage cable in the distribution direction
Figure 360472DEST_PATH_IMAGE006
、
Figure 667956DEST_PATH_IMAGE007
And
Figure 742573DEST_PATH_IMAGE008
total length in three directions of
Figure 946152DEST_PATH_IMAGE010
、
Figure 741939DEST_PATH_IMAGE011
And
Figure 853114DEST_PATH_IMAGE012
calculating the actual high-voltage cable
Figure 50746DEST_PATH_IMAGE006
、
Figure 690806DEST_PATH_IMAGE007
And
Figure 239468DEST_PATH_IMAGE008
total length in three directions;
according to the normal condition and the actual condition of the high-voltage cable
Figure 547477DEST_PATH_IMAGE006
、
Figure 334036DEST_PATH_IMAGE007
And
Figure 410577DEST_PATH_IMAGE008
and judging whether the high-voltage cable is broken or not according to the total length in the three directions.
2. The method according to claim 1, wherein the total length of the four gray level run matrices is calculated
Figure 180955DEST_PATH_IMAGE009
、
Figure 102775DEST_PATH_IMAGE010
、
Figure 274999DEST_PATH_IMAGE011
And
Figure 522441DEST_PATH_IMAGE012
the method comprises the following steps:
calculating a build angle value
Figure 777186DEST_PATH_IMAGE005
Total length of the corresponding gray run matrix:
Figure DEST_PATH_IMAGE015
wherein the content of the first and second substances,
Figure 689647DEST_PATH_IMAGE009
to construct an angle value
Figure 467111DEST_PATH_IMAGE005
The total length of the corresponding gray scale run matrix,
Figure 134721DEST_PATH_IMAGE016
to construct an angle value
Figure 348534DEST_PATH_IMAGE005
The longest length in the corresponding gray scale run matrix,
Figure DEST_PATH_IMAGE017
represents the number of occurrences of length k;
according to the constructed angle value
Figure 67616DEST_PATH_IMAGE005
The total length calculation method of the corresponding gray level run matrix respectively calculates to obtain the construction angle value
Figure 699585DEST_PATH_IMAGE006
、
Figure 538097DEST_PATH_IMAGE007
And
Figure 521097DEST_PATH_IMAGE008
total length of the corresponding gray scale run matrix
Figure 837677DEST_PATH_IMAGE010
、
Figure 324153DEST_PATH_IMAGE011
And
Figure 599146DEST_PATH_IMAGE012
。
3. the method according to claim 2, wherein the angle value of the distribution direction of the high voltage cable or the complementary angle of the angle value of the distribution direction of the high voltage cable is calculated
Figure 803862DEST_PATH_IMAGE013
The method comprises the following steps:
Figure DEST_PATH_IMAGE019
wherein the content of the first and second substances,
Figure 858887DEST_PATH_IMAGE013
representing the distribution direction angle value or the supplementary angle of the distribution direction angle value of the high voltage cable,
Figure 449137DEST_PATH_IMAGE003
representing a probability value of occurrence of the point pair (1, 1) in the third gray level co-occurrence matrix,
Figure 629452DEST_PATH_IMAGE001
representing the probability value of the occurrence of the point pair (1, 1) in the first gray level co-occurrence matrix.
4. The method according to claim 3, wherein the gray scale run-length matrix is used to monitor the disconnection of the high-voltage line
Figure 321464DEST_PATH_IMAGE005
、
Figure 245427DEST_PATH_IMAGE009
And
Figure 706495DEST_PATH_IMAGE013
calculating the length of the high-voltage cable in the distribution direction, and then calculating the length of the high-voltage cable in the normal condition according to the length of the high-voltage cable in the distribution direction
Figure 60641DEST_PATH_IMAGE006
、
Figure 708791DEST_PATH_IMAGE007
And
Figure 436444DEST_PATH_IMAGE008
the total length in three directions is given by:
(1) if, if
Figure 752019DEST_PATH_IMAGE020
The distribution direction range of the high-voltage cable is
Figure DEST_PATH_IMAGE021
At this time, the length of the high-voltage cable in the distribution direction is as follows:
Figure DEST_PATH_IMAGE023
wherein, the first and the second end of the pipe are connected with each other,
Figure 867612DEST_PATH_IMAGE024
represent
Figure 850912DEST_PATH_IMAGE020
Length of the high-voltage cable in the distribution direction;
by length
Figure 601831DEST_PATH_IMAGE024
Determining that the high voltage cable is in normal condition
Figure 21180DEST_PATH_IMAGE006
、
Figure 714198DEST_PATH_IMAGE007
And
Figure 868099DEST_PATH_IMAGE008
total length over three angles:
Figure 937555DEST_PATH_IMAGE026
wherein the content of the first and second substances,
Figure DEST_PATH_IMAGE027
indicates a normal condition and
Figure 152023DEST_PATH_IMAGE020
the high-voltage cable is arranged in
Figure 766675DEST_PATH_IMAGE006
、
Figure 391560DEST_PATH_IMAGE007
And
Figure 484281DEST_PATH_IMAGE008
total length over three angles;
(2) if, if
Figure 878222DEST_PATH_IMAGE028
The distribution direction range of the cable is
Figure DEST_PATH_IMAGE029
At this time, the length of the high-voltage cable in the distribution direction is as follows:
Figure DEST_PATH_IMAGE031
wherein the content of the first and second substances,
Figure 503589DEST_PATH_IMAGE032
to represent
Figure 100924DEST_PATH_IMAGE028
Length of the high-voltage cable in the distribution direction;
by length
Figure 512182DEST_PATH_IMAGE032
Determining that the high voltage cable is in normal condition
Figure 776941DEST_PATH_IMAGE006
、
Figure 248243DEST_PATH_IMAGE007
And
Figure 598453DEST_PATH_IMAGE008
total length over three angles:
Figure 282244DEST_PATH_IMAGE034
wherein, the first and the second end of the pipe are connected with each other,
Figure DEST_PATH_IMAGE035
indicates a normal condition and
Figure 60232DEST_PATH_IMAGE028
the high-voltage cable is arranged in
Figure 702434DEST_PATH_IMAGE006
、
Figure 274361DEST_PATH_IMAGE007
And
Figure 761843DEST_PATH_IMAGE008
total length over three angles;
(3) if, if
Figure 984883DEST_PATH_IMAGE036
The distribution direction range of the cable is
Figure DEST_PATH_IMAGE037
At this time, the length of the high-voltage cable in the distribution direction is as follows:
Figure DEST_PATH_IMAGE039
wherein the content of the first and second substances,
Figure 873686DEST_PATH_IMAGE040
to represent
Figure 182176DEST_PATH_IMAGE036
Length of the high-voltage cable in the distribution direction;
by length
Figure 207770DEST_PATH_IMAGE040
Determining that the high voltage cable is in normal condition
Figure 36049DEST_PATH_IMAGE006
、
Figure 20054DEST_PATH_IMAGE007
And
Figure 300994DEST_PATH_IMAGE008
total length over three angles:
Figure 133208DEST_PATH_IMAGE042
wherein the content of the first and second substances,
Figure DEST_PATH_IMAGE043
indicates a normal condition and
Figure 737365DEST_PATH_IMAGE036
the high-voltage cable is arranged in
Figure 892272DEST_PATH_IMAGE006
、
Figure 909775DEST_PATH_IMAGE007
And
Figure 27904DEST_PATH_IMAGE008
total length over three angles;
(4) if, if
Figure 77113DEST_PATH_IMAGE044
The distribution direction range of the cable is
Figure DEST_PATH_IMAGE045
At this time is highThe length of the cable pressing distribution direction is as follows:
Figure DEST_PATH_IMAGE047
wherein the content of the first and second substances,
Figure 996396DEST_PATH_IMAGE048
to represent
Figure 251928DEST_PATH_IMAGE044
Length of the high-voltage cable in the distribution direction;
by length
Figure 423015DEST_PATH_IMAGE048
Determining that the high voltage cable is in normal condition
Figure 345972DEST_PATH_IMAGE006
、
Figure 580032DEST_PATH_IMAGE007
And
Figure 588439DEST_PATH_IMAGE008
total length over three angles:
Figure 563217DEST_PATH_IMAGE050
wherein, the first and the second end of the pipe are connected with each other,
Figure DEST_PATH_IMAGE051
indicates a normal condition and
Figure 262052DEST_PATH_IMAGE044
the high-voltage cable is arranged in
Figure 398504DEST_PATH_IMAGE006
、
Figure 367245DEST_PATH_IMAGE007
And
Figure 896446DEST_PATH_IMAGE008
total length over three angles.
5. The method according to claim 4, wherein the gray scale run-length matrix is used to monitor the disconnection of the high-voltage line
Figure 777683DEST_PATH_IMAGE010
、
Figure 101349DEST_PATH_IMAGE011
And
Figure 68036DEST_PATH_IMAGE012
calculating the actual condition of the high-voltage cable
Figure 119038DEST_PATH_IMAGE006
、
Figure 339935DEST_PATH_IMAGE007
And
Figure 86698DEST_PATH_IMAGE008
the total length in three directions is given by:
Figure DEST_PATH_IMAGE053
wherein, the first and the second end of the pipe are connected with each other,
Figure 947207DEST_PATH_IMAGE054
indicating the actual condition of the high-voltage cable
Figure 536320DEST_PATH_IMAGE006
、
Figure 126570DEST_PATH_IMAGE007
And
Figure 57617DEST_PATH_IMAGE008
total length over three angles.
6. The method according to claim 5, wherein the high voltage cable is disconnected according to normal and actual conditions
Figure 199230DEST_PATH_IMAGE006
、
Figure 123193DEST_PATH_IMAGE007
And
Figure 318682DEST_PATH_IMAGE008
the method for judging whether the high-voltage cable is broken or not by the total length in three directions comprises the following steps:
judgment of
Figure DEST_PATH_IMAGE055
And
Figure 325690DEST_PATH_IMAGE054
if the magnitude relationship between them is
Figure 973840DEST_PATH_IMAGE056
The abnormal gray level run length in the binary image is shown, the high-voltage cable disconnection fault exists,
Figure 438844DEST_PATH_IMAGE055
is composed of
Figure 738107DEST_PATH_IMAGE027
、
Figure 10956DEST_PATH_IMAGE035
、
Figure 395670DEST_PATH_IMAGE043
And
Figure 661435DEST_PATH_IMAGE051
one of the above-mentioned (b) is,
Figure DEST_PATH_IMAGE057
is an error allowance value.
7. The method for monitoring the breakage of the high-voltage line based on the gray scale run matrix according to any one of claims 1 to 6, characterized in that after the binary image is obtained, morphological dilation operation is performed on the binary image.
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CN115330782A (en) * 2022-10-13 2022-11-11 如东鑫绿塑料有限公司 Morphology-based method for detecting defects of ice-making box injection molding part
CN115588022A (en) * 2022-11-10 2023-01-10 合肥惠强新能源材料科技有限公司 Lithium battery isolation film quality detection system based on process index data

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US20070067124A1 (en) * 2005-08-01 2007-03-22 Tom Kimpe Method and device for improved display standard conformance
CN114842009A (en) * 2022-07-04 2022-08-02 江苏奥派电气科技有限公司 Cable defect detection optimization method based on gray level run matrix

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US20070067124A1 (en) * 2005-08-01 2007-03-22 Tom Kimpe Method and device for improved display standard conformance
CN114842009A (en) * 2022-07-04 2022-08-02 江苏奥派电气科技有限公司 Cable defect detection optimization method based on gray level run matrix

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CN115330782A (en) * 2022-10-13 2022-11-11 如东鑫绿塑料有限公司 Morphology-based method for detecting defects of ice-making box injection molding part
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CN115588022A (en) * 2022-11-10 2023-01-10 合肥惠强新能源材料科技有限公司 Lithium battery isolation film quality detection system based on process index data

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