CN116660741B - Breaker turn-off detection method for intelligent base station - Google Patents
Breaker turn-off detection method for intelligent base station Download PDFInfo
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- CN116660741B CN116660741B CN202310920312.3A CN202310920312A CN116660741B CN 116660741 B CN116660741 B CN 116660741B CN 202310920312 A CN202310920312 A CN 202310920312A CN 116660741 B CN116660741 B CN 116660741B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/13—Edge detection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10016—Video; Image sequence
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20212—Image combination
- G06T2207/20224—Image subtraction
Abstract
The invention relates to the technical field of general image data processing or generation, in particular to a breaker turn-off detection method for an intelligent base station. The method comprises the following steps: acquisition of a n ，a n Is T n A target breaker image acquired at the time; according to a n Acquisition of T n The angle theta between the moving contact of the target circuit breaker and the target gate of the target circuit breaker n,1 The method comprises the steps of carrying out a first treatment on the surface of the If theta is n,1 =θ n‑1,1 Then use tri-axial sensor to obtain T n The angle theta between the moving contact of the target circuit breaker and the target gate of the target circuit breaker n,2 The method comprises the steps of carrying out a first treatment on the surface of the If |theta n,1 ‑θ n,2 |≤ε 1 Then obtain T n First angle θ 'of time-target circuit breaker' n The method comprises the steps of carrying out a first treatment on the surface of the If θ' n ≥ε 2 And judging that the target circuit breaker has a specified fault. The invention can detect the result of the breaker executing opening or closing.
Description
Technical Field
The invention relates to the technical field of general image data processing or generation, in particular to a breaker turn-off detection method for an intelligent base station.
Background
When the equipment of the remote control intelligent base station is turned off or opened, the breaker corresponding to the equipment executes opening or closing actions. However, there may be a case where the circuit breaker cannot successfully perform the opening or closing operation, or a case where the circuit breaker performs the opening or closing operation, but the moving contact is not in place after the circuit breaker performs the opening or closing operation. How to detect the result of the breaker to execute opening or closing is a problem to be solved.
Disclosure of Invention
The invention aims to provide a breaker turn-off detection method for an intelligent base station, which is used for detecting the result of opening or closing a breaker.
According to the invention, a breaker turn-off detection method for an intelligent base station comprises the following steps:
s100, obtaining a n ，a n Is T n A target breaker image acquired at the time; t (T) n The method comprises the steps that the n-th acquisition time is started from a target time, wherein the target time is the time when a target circuit breaker starts to execute opening or closing actions; n is more than or equal to 1.
S200, according to a n Acquisition of T n The angle theta between the moving contact of the target circuit breaker and the target gate of the target circuit breaker n,1 The method comprises the steps of carrying out a first treatment on the surface of the When the target time is the time when the target circuit breaker starts to execute the opening action, the target gate body is a lower gate body; and when the target time is the time when the target circuit breaker starts to execute the closing action, the target gate body is an upper gate body.
S300, if θ n,1 =θ n-1,1 S400 is performed; θ n-1,1 According to a n-1 Acquired T n-1 The angle between the moving contact of the target circuit breaker and the target gate of the target circuit breaker, a n-1 Is T n-1 Time-acquired target circuit breaker image, T n-1 Is the n-1 th acquisition time from the target time.
S400, acquiring T by using a triaxial sensor n The angle theta between the moving contact of the target circuit breaker and the target gate of the target circuit breaker n,2 。
S500, if |θ n,1 -θ n,2 |≤ε 1 Then S600 is entered; epsilon 1 Is a preset first angle threshold.
S600, obtaining T n First angle θ 'of time-target circuit breaker' n ，θ’ n =α n ×θ n,1 +(1-α n )×θ n,2 ，α n Is a preset theta n,1 Weights of 0<α n <1。
S700, if θ' n ≥ε 2 Determining that the target circuit breaker has specified faults epsilon 2 A preset second angle threshold value; when the target time is the time when the target circuit breaker starts to execute the opening action, the appointed fault is an opening fault; and when the target time is the time when the target circuit breaker starts to execute the closing action, the appointed fault is a closing fault.
The invention has at least the following beneficial effects: the invention starts to collect the image of the target breaker from the target time, and for T n Time-acquired target circuit breaker image a n The invention is according to a n Obtain T n The angle theta between the moving contact of the target circuit breaker and the target gate of the target circuit breaker n,1 If T n The angle theta between the moving contact of the target circuit breaker and the target gate of the target circuit breaker n,1 And T is n-1 The angle theta between the moving contact of the target circuit breaker and the target gate of the target circuit breaker n,1-1 If the moving contact of the target circuit breaker is the same, the moving contact is judged to be no longer operated, and based on the moving contact, the invention acquires T by using a triaxial sensor n The angle theta between the moving contact of the target circuit breaker and the target gate of the target circuit breaker n,2 If |theta n,1 -θ n,2 |≤ε 1 I.e. θ n,1 And theta n,2 The difference between them is small, then according to theta n,1 、θ n,2 And alpha n Determining a first angle θ 'of a target circuit breaker' n And according to theta' n And epsilon 2 And judging whether the opening fault or the closing fault occurs to the target circuit breaker or not according to the relative magnitude relation of the two. The invention is based on the drawingsThe method comprises the steps that whether the opening and closing faults of the target circuit breaker occur or not is judged by the image and the three-axis sensor, and only when the difference between the angle detected according to the image and the angle detected according to the three-axis sensor is small, the first angle of the target circuit breaker is obtained by combining the angle detected according to the image and the angle detected according to the three-axis sensor, and the first angle is used as the real angle of the target circuit breaker for fault judgment, so that the influence of other interference factors or three-axis sensor faults on the real angle of the target circuit breaker in the image acquisition process is effectively reduced, the accuracy of judging whether the opening or closing faults occur to the target circuit breaker is improved, and the result of executing opening or closing of the circuit breaker can be more accurately detected.
In addition, according to the method, whether the moving contact of the target circuit breaker does not act any more is judged at each acquisition time after the target time is started, and compared with a method that the preset time length after the target time is started is taken as the moving contact of the target circuit breaker to act no more, the method can acquire the time that the moving contact does not act any more in time and ensure that the angle is acquired under the condition that the moving contact does not act any more, and is beneficial to acquiring the opening and closing result of the target circuit breaker early and improving the accuracy of the acquired opening and closing result.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for detecting the turn-off of a breaker for an intelligent base station according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described 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 fall within the scope of the invention.
According to the present invention, there is provided a circuit breaker turn-off detection method for an intelligent base station, as shown in fig. 1, comprising the steps of:
s100, obtaining a n ，a n Is T n A target breaker image acquired at the time; t (T) n The method comprises the steps that the n-th acquisition time is started from a target time, wherein the target time is the time when a target circuit breaker starts to execute opening or closing actions; n is more than or equal to 1.
In the target circuit breaker image in this embodiment, there are shown a moving contact of the target circuit breaker, an upper gate body of the target circuit breaker, and a lower gate body of the target gate body.
Specifically, the method for acquiring the target time includes:
s110, judging whether a switching-off or switching-on instruction of the target circuit breaker is received.
S120, if the angle gamma between the moving contact of the target circuit breaker and the first gate body of the target circuit breaker is detected by using a three-axis sensor; when a target breaker opening command is received, the first gate body is an upper gate body; when a closing instruction of the target circuit breaker is received, the first gate body is a lower gate body.
Those skilled in the art will appreciate that the process of detecting the angle using the three-axis sensor is the prior art, and will not be described herein.
S130, the time when γ+.0° is detected is set as the target time.
In the embodiment, the image acquisition of the target circuit breaker is started from the target time, the target time of the embodiment is the time when the three-axis sensor detects that the angle between the moving contact of the target circuit breaker and the first gate body of the target circuit breaker is not 0 DEG, and the time when the three-axis sensor starts to detect is the time when the opening and closing instruction is received; therefore, the embodiment does not need to collect the target circuit breaker all the time, and the number of the target circuit breaker images to be processed can be reduced; the image acquisition can be carried out on the target circuit breaker in time, the follow-up early acquisition of the result of the opening and closing execution of the target circuit breaker is facilitated, so that the alarm can be given out in time when the serious fault occurs in the opening and closing execution of the circuit breaker, and the safety is improved.
According to the invention, the target circuit breaker image is acquired from the target time at a preset acquisition frequency, the preset acquisition frequency being an empirical value. It should be understood that if the target circuit breaker executes a brake opening instruction issued by the service platform, the initial position of the moving contact of the target circuit breaker is a brake closing position, and when the target circuit breaker does not have brake opening and closing faults, the initial position is a brake closing 0 degree position, namely the angle between the moving contact of the target circuit breaker and the upper brake body is 0 degree; in the process of executing a brake opening instruction by the target circuit breaker, the angle between the moving contact of the target circuit breaker and the upper brake body is changed from 0 degree to 180 degrees, wherein the positions of the moving contact of the target circuit breaker and the upper brake body, which are changed from 0 degree to 90 degrees, are all switch-on positions, the positions of the moving contact of the target circuit breaker, which are 0 degree, are recorded as switch-on 0 degrees, the positions of the moving contact of the target circuit breaker, which are 45 degrees, are recorded as switch-on 45 degrees, and the positions of the moving contact of the target circuit breaker, which are 90 degrees, are recorded as switch-on 90 degrees (or brake-off 90 degrees); the position of the angle between the moving contact of the target circuit breaker and the upper brake body is changed from 90 degrees to 180 degrees and is a brake-opening position, the position of the angle between the moving contact of the target circuit breaker and the upper brake body is marked as brake-opening 90 degrees (or brake-closing 90 degrees), the position of the angle between the moving contact of the target circuit breaker and the upper brake body is marked as brake-opening 45 degrees, and the position of the angle between the moving contact of the target circuit breaker and the upper brake body is marked as brake-opening 0 degrees. If the target circuit breaker executes a closing instruction issued by the service platform, the initial position of the moving contact of the target circuit breaker is a brake-separating position, and when the target circuit breaker does not have brake-separating faults, the initial position is a brake-separating 0-degree position, namely the angle between the moving contact of the target circuit breaker and the upper brake body is 180 degrees; in the process of executing the opening command of the target circuit breaker, the angle between the moving contact of the target circuit breaker and the upper gate body is changed from 180 degrees to 0 degrees, namely, the angle between the moving contact of the target circuit breaker and the lower gate body is changed from 0 degrees to 180 degrees.
S200, according to a n Acquisition of T n Moving contact of time target circuit breakerAngle θ of target gate of target circuit breaker n,1 The method comprises the steps of carrying out a first treatment on the surface of the When the target time is the time when the target circuit breaker starts to execute the opening action, the target gate body is a lower gate body; and when the target time is the time when the target circuit breaker starts to execute the closing action, the target gate body is an upper gate body.
Specifically, S200 includes the following steps:
s210, obtaining a n Gray image a 'of (a)' n 。
According to the invention, for a n The gray scale processing is carried out to obtain a n Gray image a 'of (a)' n The method comprises the steps of carrying out a first treatment on the surface of the Those skilled in the art will appreciate that any gray scale processing method in the prior art falls within the scope of the present invention.
Preferably, in the step of obtaining a n Gray image a 'of (a)' n Thereafter, for a' n Performing image enhancement processing to obtain an enhanced image as an updated gray-scale image a' n . Alternatively, the image enhancement algorithm is a method of low-quality image enhancement based on Gabor filter enhancement algorithm and based on fourier filter.
S220, obtaining a 0 n ，a 0 n To A 0 And a' n A difference gray level image is obtained after difference making; a is that 0 And the gray level image of the target circuit breaker image is acquired when the moving contact of the target circuit breaker is positioned at the position of 90 degrees of opening.
According to the invention, the moving contact of the target circuit breaker is positioned at a position of 90 degrees of opening, namely the moving contact of the target circuit breaker is positioned at a position of 90 degrees of closing, and when the moving contact of the target circuit breaker is positioned at the position, the angles of the moving contact, the upper gate body and the lower gate body are all 90 degrees.
According to the invention, A 0 And a' n The difference gray level image obtained after the difference does not comprise background pixel points any more, but only comprises pixel points of a moving contact; those skilled in the art will appreciate that a method for performing a difference on two frames of images is a prior art, and will not be described herein.
S230, obtaining a 0 n Contour diagram of moving contact of corresponding target circuit breakerb 0 n 。
Specifically, b 0 n The acquisition process of (1) comprises:
s231, pair a 0 n Binarization processing is carried out to obtain a 0 n Is a binary image c of (2) 0 n 。
Those skilled in the art will appreciate that any binarization processing method in the prior art falls within the protection scope of the present invention, and is not described herein.
S232, pair c 0 n Extracting the outline to obtain b 0 n 。
S240, obtaining a profile diagram B, wherein B is a preset moving contact of the target circuit breaker, and B= (B) 1 ,b 2 ,…,b m ,…,b M )，b m The method is characterized in that the method is a profile diagram of a moving contact of a target circuit breaker at an mth preset position, wherein the value range of M is 1 to M, and M is the number of the preset positions.
Specifically, the method for obtaining the B comprises the following steps:
s241, a first variable k=1 is set.
S242, a preset first image set B ', B' is acquired, and initialization is Null.
S243, acquiring a target circuit breaker image d of a moving contact of the target circuit breaker at the kth preset position k The method comprises the steps of carrying out a first treatment on the surface of the And when the moving contact of the target circuit breaker is at the kth preset position, the angle between the moving contact of the target circuit breaker and the upper gate body of the moving contact of the target circuit breaker is (k-1) multiplied by theta ', and theta' is a preset angle step.
According to the invention, the smaller θ', the greater the number of contours included in B, the acquisition a obtained in S600 n The more accurate the position of the moving contact of the target circuit breaker. Alternatively, θ 'is an empirical value, e.g., θ' =1°.
S244, obtaining d k Gray-scale image d' k 。
S245, obtaining d 0 k ，d 0 k To A 0 And d' k And obtaining a difference gray level image after difference.
S246, obtain d 0 k Contour map e of moving contact of corresponding target circuit breaker 0 k 。
S247, e 0 k Add to B'.
S248, if the angle between the moving contact of the target circuit breaker and the upper gate of the moving contact of the target circuit breaker is smaller than 180 ° at the kth preset position, k=k+1, repeating S243-S247 until the angle between the moving contact of the target circuit breaker and the upper gate of the moving contact of the target circuit breaker is not smaller than 180 ° at the kth preset position.
S249, B' is defined as B.
In the embodiment, the first preset position is a position of which the angle between the moving contact of the target circuit breaker and the upper brake body is 0 degrees, namely a position of closing a brake by 0 degrees; taking a first preset position as an initial position, and acquiring a frame of target circuit breaker image every θ' until the angle between a moving contact of the target circuit breaker and an upper brake body is 180 degrees, namely a brake-separating 0 degree position; thus, B comprises a profile of the moving contact of the target circuit breaker at 180 °/θ' +1 preset positions. The embodiment uniformly acquires the images of the target circuit breaker when the moving contact of the target circuit breaker is positioned at different positions, and acquires the profile of the moving contact of the corresponding target circuit breaker, so that the profile in the B is distributed uniformly, and the coverage area is wider, so that the moving contact of the target circuit breaker can be found in the B in the S250 0 n Matched b m 。
S250, traversing B, if B m And b 0 n Match, then b m The angle between the moving contact corresponding to the preset position of the moving contact of the corresponding target circuit breaker and the target gate body of the target circuit breaker is used as theta n,1 。
Those skilled in the art will appreciate that any image matching algorithm in the prior art falls within the scope of the present invention. As one of the prior art, b is determined using a quadratic match error algorithm m And b 0 n Whether there is a match, i.e. the first time a rough match is performed, b is taken m Interlaced data of (a), i.e. quarterB of one of m Data at b 0 n The interlaced matching is performed, and if the similarity exceeds a preset similarity threshold, for example 80%, a second exact match is performed.
S300, if θ n,1 =θ n-1,1 S400 is performed; θ n-1,1 According to a n-1 Acquired T n-1 The angle between the moving contact of the target circuit breaker and the target gate of the target circuit breaker, a n-1 Is T n-1 Time-acquired target circuit breaker image, T n-1 Is the n-1 th acquisition time from the target time.
According to the invention, if acquisition a n Position and acquisition a of moving contact of time-target circuit breaker n-1 When the positions of the moving contacts of the target circuit breaker are the same, judging that the moving contacts of the target circuit breaker do not act any more in the nth acquisition time; if collect a n Position and acquisition a of moving contact of time-target circuit breaker n-1 When the positions of the moving contacts of the target circuit breaker are different, judging that the moving contacts of the target circuit breaker still act at the n-1 collecting time and the moving contacts of the target circuit breaker still possibly act at the n collecting time; in this case, image acquisition of the target circuit breaker is continued, and acquisition a is judged again n+1 Position and acquisition a of moving contact of time-target circuit breaker n If the positions of the moving contacts of the target circuit breaker are the same, judging that the moving contacts of the target circuit breaker do not act any more in the (n+1) th acquisition time; otherwise, continuing to acquire the image of the target circuit breaker and judging again.
S400, acquiring T by using a triaxial sensor n The angle theta between the moving contact of the target circuit breaker and the target gate of the target circuit breaker n,2 。
Those skilled in the art will appreciate that any method of obtaining angles using a tri-axial sensor known in the art falls within the scope of the present invention.
S500, if |θ n,1 -θ n,2 |≤ε 1 Then S600 is entered; epsilon 1 Is a preset first angle threshold.
According to the present inventionInvention, if |theta n,1 -θ n,2 |≤ε 1 Represents θ n,1 And theta n,2 The difference between them is small, and, optionally, epsilon 1 Is an empirical value, e.g. epsilon 1 =1°。
S600, obtaining T n First angle θ 'of time-target circuit breaker' n ，θ’ n =α n ×θ n,1 +(1-α n )×θ n,2 ，α n Is a preset theta n,1 Weights of 0<α n <1。
Alternatively, alpha n For empirical values, e.g. alpha n =0.5。
Preferably, alpha is obtained from a trained TCN model n The method and the device have the advantages that a more accurate first angle is obtained, and further accuracy of judging whether the opening and closing faults exist in the target circuit breaker is improved. Specifically, α n The acquisition process of (1) comprises the following steps:
s610, acquiring a historical weight sequence β ', β' = (β) 1 ,β 2 ,…,β h ,…,β H ), β h The method comprises the steps of executing image weight corresponding to opening or closing operation for the H time of a target circuit breaker, wherein the value range of H is 1 to H, H is the number of times of executing opening and closing operation of the target circuit breaker, and beta is the number of times of executing opening and closing operation of the target circuit breaker h The following conditions are satisfied: delta h =β h ×δ h,1 +(1-β h )×δ h,2 ，δ h For the h time of executing the opening or closing operation of the target circuit breaker, the actual designated angle delta is corresponding to the h time of executing the opening or closing operation of the target circuit breaker h,1 For the specified angle delta corresponding to the h-th execution of opening or closing operation of the target circuit breaker obtained according to the image h,2 Executing a designated angle corresponding to opening or closing operation for the h time of the target circuit breaker obtained according to the triaxial sensor; when the operation executed by the target circuit breaker for the h time is a brake-separating operation, the designated angle is the angle between the moving contact of the target circuit breaker and the lower brake body of the target circuit breaker; and when the operation executed by the target circuit breaker for the h time is a closing operation, the designated angle is the angle between the moving contact of the target circuit breaker and the upper gate body of the target circuit breaker.
In this embodiment, the historical weight sequence β' is formed by image weights corresponding to the opening or closing operations performed by the target circuit breaker acquired according to the time sequence in a historical time period, where the historical time period is a time period before the opening or closing operation performed by the target circuit breaker for the intelligent base station in this embodiment is performed, and the opening or closing operation performed by the target circuit breaker for the H-th time is a last opening or closing operation performed before the time of the opening or closing detection method performed by the target circuit breaker for the intelligent base station in this embodiment is performed. It should be understood that the h+1th opening or closing operation performed by the target circuit breaker, i.e., the opening or closing operation performed by the target circuit breaker from the target time.
Delta in this example h The method comprises the steps that an actual designated angle corresponding to opening or closing operation is executed for the h time of a target circuit breaker, wherein the actual designated angle represents a standard value of the designated angle and is a more accurate value; alternatively, the actual specified angle is obtained by measuring the specified angle using a precision angle measuring instrument a plurality of times and averaging.
S620, inputting the historical weight sequence into a trained TCN model for reasoning, and taking the image weight of the reasoning result, corresponding to the H+1st opening or closing operation executed by the target circuit breaker, as alpha n The method comprises the steps of carrying out a first treatment on the surface of the The trained TCN model is used for predicting image weights corresponding to opening or closing operations executed by the target circuit breaker.
Optionally, the training method of the TCN model includes: and acquiring weight sequences corresponding to the plurality of sample breakers, and training the weight sequences corresponding to the plurality of sample breakers as training samples of the TCN model. The weight sequence corresponding to each sample breaker is composed of image weights corresponding to the opening or closing operation of the sample breaker acquired according to time sequence, the image acquisition equipment is also used for acquiring images of the sample breaker in the using process, the angles of the corresponding moving contact and the corresponding gate body are acquired based on the acquired images (the method is similar to the method of the embodiment), the angles of the corresponding moving contact and the corresponding gate body are acquired based on the triaxial sensor, and the corresponding image weights are also similar to delta h =β h ×δ h,1 +(1-β h )×δ h,2 The actual angle is obtained by carrying out weighted summation on the angle of the movable contact acquired based on the acquired image and the corresponding gate body and the angle of the movable contact acquired based on the triaxial sensor and the corresponding gate body based on the image weight.
According to the invention, the trained TCN model can predict the image weight of the H+1st opening or closing operation according to the historical weight sequence beta ', and the image weight is used for weighting and summing the angle obtained according to the image and the angle obtained according to the triaxial sensor, wherein the obtained angle (namely the first angle theta' n ) The method is closer to the actual angle, and the accuracy of judging whether the opening or closing fault exists in the target circuit breaker is improved.
Those skilled in the art will appreciate that any specific training procedure of the TCN model in the prior art falls within the scope of the present invention.
S700, if θ' n ≥ε 2 Determining that the target circuit breaker has specified faults epsilon 2 A preset second angle threshold value; when the target time is the time when the target circuit breaker starts to execute the opening action, the appointed fault is an opening fault; and when the target time is the time when the target circuit breaker starts to execute the closing action, the appointed fault is a closing fault.
According to the invention, if θ' n ≥ε 2 The position of the moving contact of the target circuit breaker is greatly different from the position of the opening 0 degree or closing 0 degree; alternatively, ε 2 Is an empirical value, e.g. epsilon 2 =5°. Optionally, in this case, an alarm message is sent to the service platform.
According to the invention, if θ' n <ε 2 And judging that the target circuit breaker does not have the designated fault. Alternatively, in this case, no alert information need be sent to the service platform.
Preferably, the present embodiment is at θ' n ≥ε 2 In the case of (2) also according to θ' n The corresponding alarm level is determined, and the specific process comprises the following steps:
S710，acquiring a preset angle interval E, E= (E) 1 ,e 2 ,…,e i ,…,e Q )；e i For a preset ith angle interval, the value range of i is 1 to Q, and Q is the number of preset angle intervals; no overlapping angle exists between any two angle intervals, and the angle coverage included by E is 0 degree, 90 degree]Is included in the range of the angle.
S720, traversing E, if θ' n Belongs to e i Will e i Corresponding alarm level c i As theta' n And the corresponding alarm level.
As a specific embodiment, q=4, i.e. E comprises 4 preset angle intervals, wherein the first angle interval E 1 Is (0 degree, 15 degree)]When theta'. n Belonging to the first angle interval e 1 Time e 1 Corresponding alarm level c 1 Four stages; wherein the second angle interval e 2 Is (15 DEG, 25 DEG)]When theta'. n Belonging to the second angle interval e 2 Time e 2 Corresponding alarm level c 2 Three stages are adopted; wherein the third angle interval e 3 Is (25 DEG, 35 DEG)]When theta'. n Belonging to the third angle interval e 3 Time e 3 Corresponding alarm level c 3 Is a second stage; wherein the fourth angle interval e 1 Is (35 DEG, 90 DEG)]When theta'. n Belonging to the fourth angle interval e 4 Time e 4 Corresponding alarm level c 4 Is of a first level. The first level alarm level corresponds to a more severe degree of failure than the second level alarm level, the second level alarm level corresponds to a more severe degree of failure than the third level alarm level, and the third level alarm level corresponds to a more severe degree of failure than the fourth level alarm level.
If θ' n When the corresponding first-level alarm level is set, immediately reporting alarm information for indicating that the fault level of the target circuit breaker is first-level to the service platform; if θ' n When the second-level alarm level corresponds to the first-level alarm level, reporting alarm information for indicating that the fault level of the target circuit breaker is the second-level alarm level to the service platform at intervals of a first preset duration; if θ' n Corresponding to the third alarm level, the third alarm level can be spacedReporting alarm information for indicating that the fault level of the target circuit breaker is three-level to the service platform during the second preset time period; if θ' n When the four-level alarm level corresponds to the target circuit breaker, reporting alarm information for indicating that the fault level of the target circuit breaker is four-level to the service platform at intervals of a third preset time length. The first preset duration is smaller than the second preset duration, and the second preset duration is smaller than the third preset duration, so that the time of fault information received by the service platform is related to the fault grade, the interval of fault information corresponding to the serious fault grade received by the service platform is shorter, and the service platform is convenient to overhaul the circuit breaker with serious fault grade in time and reasonably arrange the overhaul time of the circuit breaker with mild fault grade.
According to the invention, as the opening and closing times of the target circuit breaker are increased, the opening and closing angle of the target circuit breaker is gradually increased due to mechanical abrasion. Preferably, the present embodiment is also based on θ' n The service life of the target circuit breaker is predicted, so that the target circuit breaker is replaced in time before the target circuit breaker has serious faults, and the problem that the intelligent base station cannot work normally due to the serious faults of the target circuit breaker is avoided.
According to the present invention, S500 further includes: if |theta n,1 -θ n,2 |>ε 1 Then S800 is entered.
S800, if |θ n,1 -θ n-1 |>ε 3 And |theta n,2 -θ n-1 |≤ε 3 Then S810 is entered; epsilon 3 For a preset third angle threshold value, θ n-1 The angle between the moving contact and the target gate body corresponding to the last execution of the same operation for the target circuit breaker; when the target time is the time when the target circuit breaker starts to execute the opening action, the same operation is the opening operation; and when the target time is the time when the target circuit breaker starts to execute the closing action, the same operation is a closing operation.
According to the invention, if |θ n,1 -θ n-1 |>ε 3 Represents θ n,1 And theta n-1 The difference between them is small; alternatively, ε 3 Is an empirical value, e.g. epsilon 1 =0.5°。
S810, if θ n,2 ≥ε 2 And judging that the opening and closing fault occurs to the target circuit breaker.
According to the invention, if θ n,2 <ε 2 And judging that the opening and closing fault of the target circuit breaker does not occur.
According to the invention, if |θ n,1 -θ n-1 |>ε 3 And |theta n,2 -θ n-1 |≤ε 3 Indicating that according to a n θ obtained n,1 Angle theta between moving contact and target gate corresponding to the same operation last time n-1 Is larger than the difference of theta obtained by a triaxial sensor n,2 Angle theta between moving contact and target gate corresponding to the same operation last time n-1 The difference of (a) is smaller, at this time, it is judged that acquisition a n Is affected by other disturbance factors (such as the position of the image acquisition device for acquiring the target circuit breaker changes), resulting in inaccurate angle of the moving contact and the target gate body obtained from the image, in which case the angle θ obtained from the three-axis sensor n,2 And the actual angle between the moving contact of the target circuit breaker and the target gate body is used for judging whether the target circuit breaker has a breaking or closing fault or not based on the angle, so that the accuracy of judging whether the target circuit breaker has the breaking or closing fault or not is improved.
According to the present invention, S800 further includes: if |theta n,1 -θ n-1 |≤ε 3 And |theta n,2 -θ n-1 |>ε 3 Then S820 is entered.
S820, if θ n,1 ≥ε 2 And judging that the opening and closing fault occurs to the target circuit breaker.
According to the invention, if θ n,1 <ε 2 And judging that the opening and closing fault of the target circuit breaker does not occur.
According to the invention, if |θ n,1 -θ n-1 |≤ε 3 And |theta n,2 -θ n-1 |>ε 3 Indicating that according to a n θ obtained n,1 Angle theta between moving contact and target gate corresponding to the same operation last time n-1 Is smaller and theta is obtained from a three-axis sensor n,2 Angle theta between moving contact and target gate corresponding to the same operation last time n-1 Is large, at this time, it is determined that θ is acquired n,2 In the course of the three-axis sensor, the three-axis sensor may malfunction, resulting in inaccurate angle of the moving contact and the target shutter obtained from the three-axis sensor, in which case θ will be obtained from the image n,1 And the actual angle between the moving contact of the target circuit breaker and the target gate body is used for judging whether the target circuit breaker has a breaking or closing fault or not based on the angle, so that the accuracy of judging whether the target circuit breaker has the breaking or closing fault or not is improved.
The invention starts to collect the image of the target breaker from the target time, and for T n Time-acquired target circuit breaker image a n The invention is according to a n Obtain T n The angle theta between the moving contact of the target circuit breaker and the target gate of the target circuit breaker n,1 If T n The angle theta between the moving contact of the target circuit breaker and the target gate of the target circuit breaker n,1 And T is n-1 The angle theta between the moving contact of the target circuit breaker and the target gate of the target circuit breaker n,1-1 If the moving contact of the target circuit breaker is the same, the moving contact is judged to be no longer operated, and based on the moving contact, the invention acquires T by using a triaxial sensor n The angle theta between the moving contact of the target circuit breaker and the target gate of the target circuit breaker n,2 If |theta n,1 -θ n,2 |≤ε 1 I.e. θ n,1 And theta n,2 The difference between them is small, then according to theta n,1 、θ n,2 And alpha n Determining a first angle θ 'of a target circuit breaker' n And according to theta' n And epsilon 2 And judging whether the opening fault or the closing fault occurs to the target circuit breaker or not according to the relative magnitude relation of the two. The invention judges whether the opening and closing fault of the target circuit breaker occurs according to the image and the triaxial sensor together, and only when the difference between the angle detected according to the image and the angle detected according to the triaxial sensor is small,the first angle of the target circuit breaker is obtained by combining the angle detected according to the image and the angle detected according to the three-axis sensor, and is taken as the real angle of the target circuit breaker to carry out fault judgment, so that the influence of other interference factors or three-axis sensor faults on the real angle of the target circuit breaker in the image acquisition process is effectively reduced, the accuracy of judging whether the opening or closing fault of the target circuit breaker occurs is improved, and the opening or closing result of the circuit breaker can be detected more accurately.
In addition, according to the method, whether the moving contact of the target circuit breaker does not act any more is judged at each acquisition time after the target time is started, and compared with a method that the preset time length after the target time is started is taken as the moving contact of the target circuit breaker to act no more, the method can acquire the time that the moving contact does not act any more in time and ensure that the angle is acquired under the condition that the moving contact does not act any more, and is beneficial to acquiring the opening and closing result of the target circuit breaker early and improving the accuracy of the acquired opening and closing result.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. Those skilled in the art will also appreciate that many modifications may be made to the embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (9)
1. The circuit breaker turn-off detection method for the intelligent base station is characterized by comprising the following steps of:
s100, obtaining a n ，a n Is T n A target breaker image acquired at the time; t (T) n The method comprises the steps that the n-th acquisition time is started from a target time, wherein the target time is the time when a target circuit breaker starts to execute opening or closing actions; n is more than or equal to 1;
s200, according to a n Acquisition of T n The angle theta between the moving contact of the target circuit breaker and the target gate of the target circuit breaker n,1 The method comprises the steps of carrying out a first treatment on the surface of the When the target time isWhen the time for starting the opening action of the breaker is marked, the target gate body is a lower gate body; when the target time is the time for the target circuit breaker to start to execute the closing action, the target gate body is an upper gate body;
s300, if θ n,1 =θ n-1,1 S400 is performed; θ n-1,1 According to a n-1 Acquired T n-1 The angle between the moving contact of the target circuit breaker and the target gate of the target circuit breaker, a n-1 Is T n-1 Time-acquired target circuit breaker image, T n-1 N-1 acquisition time from the target time;
s400, acquiring T by using a triaxial sensor n The angle theta between the moving contact of the target circuit breaker and the target gate of the target circuit breaker n,2 ；
S500, if |θ n,1 -θ n,2 |≤ε 1 Then S600 is entered; epsilon 1 Is a preset first angle threshold;
s600, obtaining T n First angle θ 'of time-target circuit breaker' n ，θ’ n =α n ×θ n,1 +(1-α n )×θ n,2 ，α n Is a preset theta n,1 Weights of 0<α n <1；
S700, if θ' n ≥ε 2 Determining that the target circuit breaker has specified faults epsilon 2 A preset second angle threshold value; when the target time is the time when the target circuit breaker starts to execute the opening action, the appointed fault is an opening fault; when the target time is the time when the target circuit breaker starts to execute the closing action, the appointed fault is a closing fault;
s200 includes the steps of:
s210, obtaining a n Gray image a 'of (a)' n ；
S220, obtaining a 0 n ，a 0 n To A 0 And a' n A difference gray level image is obtained after difference making; a is that 0 A gray level map of a target circuit breaker image acquired when the moving contact of the target circuit breaker is positioned at a position of 90 degrees of openingAn image;
s230, obtaining a 0 n Outline drawing b of moving contact of corresponding target circuit breaker 0 n ；
S240, obtaining a profile diagram B, wherein B is a preset moving contact of the target circuit breaker, and B= (B) 1 ,b 2 ,…,b m ,…,b M )，b m The method comprises the steps that a profile diagram of a moving contact of a target circuit breaker at an mth preset position is obtained, wherein the value range of M is 1 to M, and M is the number of the preset positions;
s250, traversing B, if B m And b 0 n Match, then b m The angle between the moving contact corresponding to the preset position of the moving contact of the corresponding target circuit breaker and the target gate body of the target circuit breaker is used as theta n,1 。
2. The circuit breaker shutdown detection method for an intelligent base station according to claim 1, wherein α n The acquisition process of (1) comprises the following steps:
s610, acquiring a historical weight sequence β ', β' = (β) 1 ,β 2 ,…,β h ,…,β H ), β h The method comprises the steps of executing image weight corresponding to opening or closing operation for the H time of a target circuit breaker, wherein the value range of H is 1 to H, H is the number of times of executing opening and closing operation of the target circuit breaker, and beta is the number of times of executing opening and closing operation of the target circuit breaker h The following conditions are satisfied: delta h =β h ×δ h,1 +(1-β h )×δ h,2 ，δ h For the h time of executing the opening or closing operation of the target circuit breaker, the actual designated angle delta is corresponding to the h time of executing the opening or closing operation of the target circuit breaker h,1 For the specified angle delta corresponding to the h-th execution of opening or closing operation of the target circuit breaker obtained according to the image h,2 Executing a designated angle corresponding to opening or closing operation for the h time of the target circuit breaker obtained according to the triaxial sensor; when the operation executed by the target circuit breaker for the h time is a brake-separating operation, the designated angle is the angle between the moving contact of the target circuit breaker and the lower brake body of the target circuit breaker; when the operation executed by the target circuit breaker for the h time is a closing operation, the designated angle is the angle between the moving contact of the target circuit breaker and the upper gate body of the target circuit breaker;
s620, inputting the historical weight sequence into a trained TCN model for reasoning, and taking the image weight of the reasoning result, corresponding to the H+1st opening or closing operation executed by the target circuit breaker, as alpha n The method comprises the steps of carrying out a first treatment on the surface of the The trained TCN model is used for predicting image weights corresponding to opening or closing operations executed by the target circuit breaker.
3. The circuit breaker shutdown detection method for an intelligent base station according to claim 1, wherein the acquisition method of B comprises:
s241, a first variable k=1 is set;
s242, acquiring a preset first image set B ', B ' and initializing the first image set B ' to be Null;
s243, acquiring a target circuit breaker image d of a moving contact of the target circuit breaker at the kth preset position k The method comprises the steps of carrying out a first treatment on the surface of the The angle between the moving contact of the target circuit breaker and the upper gate body of the moving contact of the target circuit breaker is (k-1) multiplied by theta ', and theta' is a preset angle step when the moving contact of the target circuit breaker is at a kth preset position;
s244, obtaining d k Gray-scale image d' k ；
S245, obtaining d 0 k ，d 0 k To A 0 And d' k A difference gray level image is obtained after difference making;
s246, obtain d 0 k Contour map e of moving contact of corresponding target circuit breaker 0 k ；
S247, e 0 k Add to B';
s248, if the angle between the moving contact of the target circuit breaker and the upper gate body of the moving contact of the target circuit breaker is smaller than 180 degrees when the moving contact of the target circuit breaker is at the kth preset position, k=k+1, repeating S243-S247 until the angle between the moving contact of the target circuit breaker and the upper gate body of the moving contact of the target circuit breaker is not smaller than 180 degrees when the moving contact of the target circuit breaker is at the kth preset position;
s249, B' is defined as B.
4. The method for intelligent base station circuit breaker shutdown detection of claim 1, wherein S500 further comprises: if |theta n,1 -θ n,2 |>ε 1 Then enter S800;
s800, if |θ n,1 -θ n-1 |>ε 3 And |theta n,2 -θ n-1 |≤ε 3 Then S810 is entered; epsilon 3 For a preset third angle threshold value, θ n-1 The angle between the moving contact and the target gate body corresponding to the last execution of the same operation for the target circuit breaker; when the target time is the time when the target circuit breaker starts to execute the opening action, the same operation is the opening operation; when the target time is the time when the target circuit breaker starts to execute the closing action, the same operation is closing operation;
s810, if θ n,2 ≥ε 2 And judging that the opening and closing fault occurs to the target circuit breaker.
5. The method for intelligent base station circuit breaker shutdown detection of claim 4, wherein S800 further comprises: if |theta n,1 -θ n-1 |≤ε 3 And |theta n,2 -θ n-1 |>ε 3 Then proceed to S820;
s820, if θ n,1 ≥ε 2 And judging that the opening and closing fault occurs to the target circuit breaker.
6. The circuit breaker shutdown detection method for an intelligent base station of claim 1, wherein b 0 n The acquisition process of (1) comprises:
s231, pair a 0 n Binarization processing is carried out to obtain a 0 n Is a binary image c of (2) 0 n ；
S232, pair c 0 n Extracting the outline to obtain b 0 n 。
7. The method for detecting the circuit breaker shutdown of the intelligent base station according to claim 1, wherein the method for acquiring the target time comprises:
s110, judging whether a switching-off or switching-on instruction of a target circuit breaker is received;
s120, if the angle gamma between the moving contact of the target circuit breaker and the first gate body of the target circuit breaker is detected by using a three-axis sensor; when a target breaker opening command is received, the first gate body is an upper gate body; when a closing instruction of the target circuit breaker is received, the first gate body is a lower gate body;
s130, the time when γ+.0° is detected is set as the target time.
8. The method for intelligent base station circuit breaker shutdown detection according to claim 1, wherein in S250, b is determined using a quadratic match error algorithm m And b 0 n Whether there is a match.
9. A circuit breaker shutdown detection method for an intelligent base station according to claim 3, characterized in that θ' is 1 °.
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