CN111829467B - Wiring evaluation method and system based on wiring angle and position - Google Patents
Wiring evaluation method and system based on wiring angle and position Download PDFInfo
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- CN111829467B CN111829467B CN202010586986.0A CN202010586986A CN111829467B CN 111829467 B CN111829467 B CN 111829467B CN 202010586986 A CN202010586986 A CN 202010586986A CN 111829467 B CN111829467 B CN 111829467B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
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Abstract
The invention discloses a wiring evaluation method and system based on wiring angles and positions, which comprises the following steps: segmenting the obtained wiring to be detected, detecting the direction of each segment of line segment to be detected, and obtaining a straight line corresponding to the line segment to be detected by adopting a fitting algorithm, wherein the angle of the straight line is the angle deviation of the detected line segment; performing position detection on each segment of line segment to be detected, and acquiring the distance from the line segment to be detected to a measurement reference surface to obtain the position coordinates of the line segment to be detected; and comparing the position coordinates and the angle deviation of each section of line segment to be detected with the standard connection line to obtain a connection line evaluation result of the connection line to be detected. The method comprises the steps of adopting a segmented sampling and segmented calculation method for a line to be measured, respectively detecting a direction angle and a position angle according to the horizontal or vertical state of the line to be measured, solving the problem of bending of a wiring harness through an angle value-taking algorithm of straight line fitting, and realizing angle measurement of different positions of each line.
Description
Technical Field
The invention relates to the technical field of meter installation and power connection, in particular to a wiring evaluation method and system based on a wiring angle and a wiring position.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In the meter-installing and power-connecting project, the on-site high-precision real-time monitoring of the wire connecting result is required for the wire connecting competition project, the wire connecting evaluation is carried out manually, the wire connecting result cannot be specifically quantized through the manual subjective judgment, and a large error exists in the manual judgment.
The high-precision real-time detection of the wiring can be realized by combining a machine vision technology, and meanwhile, the inventor finds that the wiring is naturally bent, the wiring process of the same wire can be in a horizontal state or a vertical state, and positions and angles to be measured are different in different states; and also has the problem that the wiring cannot be completely straightened, so that the measurement is not accurate.
Disclosure of Invention
In order to solve the problems, the invention provides a wiring evaluation method and system based on wiring angles and positions, a method of subsection sampling subsection calculation is adopted for a line to be measured, detection of direction angles and position angles is respectively carried out according to the horizontal or vertical state of the line to be measured, the problem of bending of a wiring harness is solved through an angle value-taking algorithm of straight line fitting, and angle measurement of different positions of each line is realized.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a wiring evaluation method based on a wiring angle and a position, including:
segmenting the obtained wiring to be detected, detecting the direction of each segment of the line segment to be detected, and obtaining a straight line corresponding to the segment to be detected by adopting a fitting algorithm, wherein the angle of the straight line is the angle deviation of the detected line segment;
performing position detection on each segment of line segment to be detected, and acquiring the distance from the line segment to be detected to a measurement reference surface to obtain the position coordinates of the line segment to be detected;
and comparing the position coordinates and the angle deviation of each section of line segment to be detected with the standard wiring to obtain a wiring evaluation result of the wiring to be detected.
In a second aspect, the present invention provides a wire connection evaluation system based on wire connection angle and position, comprising:
the direction detection module is used for segmenting the obtained wiring to be detected, performing direction detection on each segment of line segment to be detected, and obtaining a straight line corresponding to the line segment to be detected by adopting a fitting algorithm, wherein the angle of the straight line is the angle deviation of the detection line segment;
the position detection module is used for carrying out position detection on each segment of line segment to be detected, acquiring the distance from the line segment to be detected to a measurement reference surface and obtaining the position coordinates of the line segment to be detected;
and the evaluation module is used for comparing the position coordinate and the angle deviation of each section of line segment to be tested with the standard wiring to obtain a wiring evaluation result of the wiring to be tested.
In a third aspect, the present invention provides an electronic device comprising a memory and a processor, and computer instructions stored on the memory and executed on the processor, wherein when the computer instructions are executed by the processor, the method of the first aspect is performed.
In a fourth aspect, the present invention provides a computer readable storage medium for storing computer instructions which, when executed by a processor, perform the method of the first aspect.
Compared with the prior art, the invention has the following beneficial effects:
according to the method, firstly, the wiring harness to be detected is obtained through initial sampling, segmentation calculation is carried out, and then each section of line is accurately measured, so that the problem of bending of the wiring harness is solved, angles of different positions of one line can be measured, and the real situation is restored to the maximum extent.
According to the invention, the direction angle and the position angle are respectively detected according to the horizontal or vertical state of the line to be measured, and the angle measurement of an evaluation field such as wiring is carried out instead of manual work through an angle value-taking algorithm of straight line fitting, so that the accuracy and the objectivity of the measurement are realized.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are included to illustrate an exemplary embodiment of the invention and not to limit the invention.
Fig. 1 is a flowchart of a wiring evaluation method based on a wiring angle and a position according to embodiment 1 of the present invention;
FIG. 2 is a schematic view of level detection provided in example 1 of the present invention;
FIG. 3 is a schematic diagram of vertical detection provided in embodiment 1 of the present invention;
fig. 4 is a schematic diagram of position detection provided in embodiment 1 of the present invention.
The specific implementation mode is as follows:
the invention is further explained by the following embodiments in conjunction with the drawings.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and furthermore, it should be understood that the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
Example 1
As shown in fig. 1, the present embodiment provides a wiring evaluation method based on a wiring angle and a position, including:
s1: segmenting the obtained wiring to be detected, detecting the direction of each segment of line segment to be detected, and obtaining a straight line corresponding to the line segment to be detected by adopting a fitting algorithm, wherein the angle of the straight line is the angle deviation of the detected line segment;
s2: performing position detection on each segment of line segment to be detected, and acquiring the distance from the line segment to be detected to a measurement reference surface to obtain the position coordinate of the line segment to be detected;
s3: and comparing the position coordinates and the angle deviation of each section of line segment to be detected with the standard wiring to obtain a wiring evaluation result of the wiring to be detected.
In the step S1, since the wire is naturally bent and has a vertical or horizontal wire connection state during wire connection, how to accurately measure the angle of one wire at different positions and in different wire connection directions and solve the problem of inaccurate measurement due to the fact that the wire cannot reach a completely straight state so as to restore the real situation to the maximum extent;
the embodiment divides the wiring to be measured according to the test efficiency and the speed balance, accurately tests each wiring section, and respectively tests different positions of the same wire.
Fig. 2-4 show image effect diagrams for horizontal detection, vertical detection and position detection of the wire segments in the collected wire images;
in the direction detection process, a measurement reference surface is selected, and the bottom plane of the junction cabinet is selected in the embodiment; understandably, the position of the measuring reference surface is selected in a self-adaptive manner according to the actual situation of the site and the actual precision requirement;
and calibrating the camera system by adopting a standard calibration plate on the measurement reference surface to obtain the conversion relation between the camera coordinate system and the world coordinate system.
After calibration is completed, detecting the direction angle according to the connection state of the wiring, namely the horizontal state and the vertical state; in the present embodiment, the direction detection includes horizontal detection and vertical detection;
as shown in fig. 2, the level detection includes:
calculating the pixel value of the pixel point of each segment to be measured in the vertical direction, and collecting the coordinate of the pixel point with the maximum change rate of the adjacent pixel values; and according to the acquired coordinates, obtaining a straight line corresponding to the line segment to be detected by adopting a fitting algorithm.
Measuring pixel points in horizontal detection from top to bottom or from bottom to top, and taking points in a direction perpendicular to a wiring direction;
the fitting algorithm comprises: zero Order, biliner, quadratic, cubic, or Biliner Fixed.
As shown in fig. 3, the vertical detection includes:
selecting a reference line of a line segment to be tested, and moving left by a set distance according to the position of the reference line to obtain a test area of the line segment to be tested;
calculating the pixel value of each pixel point in the horizontal direction of the test area, and collecting the coordinate of the pixel point with the maximum change rate of the adjacent pixel points;
and obtaining a straight line corresponding to the line segment to be measured by adopting a fitting algorithm according to the acquired coordinates.
Measuring pixel points in vertical detection from left to right, and taking points in a direction vertical to a wiring direction;
in this embodiment, the initial position of the line is obtained by finding the edge, and the leftmost side of the line segment is used as a reference line, and the position is moved to the left, so as to achieve the effect of self-adaption of the measuring position;
in addition, in the case of a multi-line cable, after the position of the first line is determined, the other lines may be sequentially provided with measurement reference lines according to the difference in relative position with respect to the first line.
In the embodiment, all positions of the same line in different wiring states are tested through horizontal detection and vertical detection, so that the comprehensive and accurate measurement is ensured.
In the step S2, since the height of the lower terminal connecting terminal is relatively high and the actual connection is not on the same plane, in order to improve the measurement accuracy, the measurement reference surface for position detection is changed to the upper surface of the terminal block, and a calibration plate is used for calibration;
as shown in fig. 4, in the position detection, the distance from the line segment to be measured to the measurement reference surface is obtained, and the position coordinate of the line segment to be measured is obtained.
In the step S3, after the test of each segment of the line segment to be tested is completed, the evaluation score of each segment of the line segment to be tested is obtained by comparing the standard connection, and finally the evaluation result of the connection of the line segment to be tested is obtained by summarizing. The embodiment replaces manual work to measure and evaluate angles and the like of a wiring evaluation site, and meanwhile, a segmented sampling and segmented calculation method is adopted to achieve measuring accuracy.
Example 2
The present embodiment provides a wiring evaluation system based on a wiring angle and a position, including:
the direction detection module is used for segmenting the obtained wiring to be detected, performing direction detection on each segment of line segment to be detected, and obtaining a straight line corresponding to the segment to be detected by adopting a fitting algorithm, wherein the angle of the straight line is the angle deviation of the detected line segment;
the position detection module is used for carrying out position detection on each segment of line segment to be detected, acquiring the distance from the line segment to be detected to a measurement reference surface and obtaining the position coordinate of the line segment to be detected;
and the evaluation module is used for comparing the position coordinate and the angle deviation of each section of line segment to be tested with the standard wiring to obtain a wiring evaluation result of the wiring to be tested.
It should be noted that the above modules correspond to steps S1 to S3 in embodiment 1, and the above modules are the same as the examples and application scenarios realized by the corresponding steps, but are not limited to the disclosure of embodiment 1. It should be noted that the modules described above as part of a system may be implemented in a computer system such as a set of computer-executable instructions.
In further embodiments, there is also provided
An electronic device comprising a memory and a processor and computer instructions stored on the memory and executed on the processor, the computer instructions when executed by the processor performing the method of embodiment 1. For brevity, further description is omitted herein.
It should be understood that in this embodiment, the processor may be a central processing unit CPU, and the processor may also be other general purpose processors, digital signal processors DSP, application specific integrated circuits ASIC, off-the-shelf programmable gate arrays FPGA or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and so on. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory may include both read-only memory and random access memory and may provide instructions and data to the processor, and a portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information.
A computer readable storage medium storing computer instructions which, when executed by a processor, perform the method of embodiment 1.
The method in embodiment 1 may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor. The software modules may be located in ram, flash, rom, prom, or eprom, registers, among other storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor. To avoid repetition, it is not described in detail here.
Those of ordinary skill in the art will appreciate that the various illustrative elements, i.e., algorithm steps, described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive changes in the technical solutions of the present invention.
Claims (10)
1. A wiring evaluation method based on a wiring angle and a position is characterized by comprising the following steps:
segmenting the obtained wiring to be detected, detecting the direction of each segment of line segment to be detected, and obtaining a straight line corresponding to the line segment to be detected by adopting a fitting algorithm, wherein the angle of the straight line is the angle deviation of the detected line segment;
performing position detection on each segment of line segment to be detected, and acquiring the distance from the line segment to be detected to a measurement reference surface to obtain the position coordinates of the line segment to be detected;
comparing the position coordinates and the angle deviation of each section of line segment to be detected with the standard connection line to obtain the evaluation score of each section of line segment to be detected, and finally summarizing to obtain the connection line evaluation result of the connection line to be detected;
segmenting the wiring to be tested according to the test efficiency and the speed balance, accurately testing each segment of the wiring segment by adopting a segmented sampling and segmented calculation method, respectively testing different positions of the same line, and evaluating the wiring result in a vertical or horizontal state;
selecting a datum line of a segment to be detected during vertical detection, and moving left by a set distance according to the position of the datum line to obtain a test area of the segment to be detected; the initial position of the line is obtained by searching the edge, the leftmost side of the line segment is used as a reference line, and the position is moved to the left, so that the self-adaptive effect of the measuring position is achieved; in addition, in the case of a multi-line cable, after the position of the first line is determined, measurement reference lines are sequentially set in other lines according to the difference in relative positions with respect to the first line.
2. The method of claim 1, wherein the wire angle and position based wire evaluation method,
the direction detection calculates the pixel value of the pixel point of each segment of line segment to be detected in the direction vertical to the wiring direction; including horizontal detection and vertical detection.
3. The wire evaluation method based on wire angle and position as claimed in claim 2,
the level detection comprises the following steps: calculating the pixel value of the pixel point of each segment of line segment to be measured in the vertical direction, and collecting the coordinate of the pixel point with the maximum change rate of the adjacent pixel values; and obtaining a straight line corresponding to the line segment to be measured by adopting a fitting algorithm according to the acquired coordinates.
4. The wire evaluation method based on wire angle and position as claimed in claim 2,
the vertical detection includes: selecting a datum line of a line segment to be tested, and moving the datum line to the left by a set distance to obtain a test area of the line segment to be tested;
calculating the pixel value of each pixel point in the horizontal direction of the test area, and collecting the coordinate of the pixel point with the maximum change rate of the adjacent pixel points;
and obtaining a straight line corresponding to the line segment to be measured by adopting a fitting algorithm according to the acquired coordinates.
5. The wire evaluation method based on wire angle and position as claimed in claim 4,
the fitting algorithm includes Zero Order, bilinear, quadratic, cubic, or Bilinear Fixed.
6. The wire connection evaluation method based on wire connection angle and position as claimed in claim 1, wherein the measurement reference surface is calibrated by using a standard calibration board.
7. The wire connection evaluation method based on the wire connection angle and the position as claimed in claim 1, wherein in the position detection, a measurement reference surface is provided on an upper surface of the terminal block;
when the direction is detected, the measuring reference surface is arranged on the bottom plane of the junction cabinet.
8. A wire evaluation system based on wire angle and position, comprising:
the direction detection module is used for segmenting the obtained wiring to be detected, performing direction detection on each segment of line segment to be detected, and obtaining a straight line corresponding to the segment to be detected by adopting a fitting algorithm, wherein the angle of the straight line is the angle deviation of the detected line segment;
the position detection module is used for carrying out position detection on each segment of line segment to be detected, acquiring the distance from the line segment to be detected to a measurement reference surface and obtaining the position coordinate of the line segment to be detected;
the evaluation module is used for comparing the position coordinates and the angle deviation of each section of line segment to be tested with the standard wiring to obtain the evaluation score of each section of line segment to be tested, and finally summarizing to obtain the wiring evaluation result of the wiring to be tested;
segmenting the wiring to be tested according to the test efficiency and the speed balance, accurately testing each segment of the wiring segment by adopting a segmented sampling and segmented calculation method, respectively testing different positions of the same line, and evaluating the wiring result in a vertical or horizontal state;
selecting a datum line of a segment to be detected during vertical detection, and moving left by a set distance according to the position of the datum line to obtain a test area of the segment to be detected; the initial position of the line is obtained by searching the edge, the leftmost side of the line segment is used as a reference line, and the position is moved to the left, so that the self-adaptive effect of the measuring position is achieved; in addition, in the case of the multi-line arrangement, after the position of the first line is determined, the other lines are sequentially provided with measurement reference lines according to the relative position difference with the first line.
9. An electronic device comprising a memory and a processor and computer instructions stored on the memory and executed on the processor, the computer instructions when executed by the processor performing the method of any of claims 1-7.
10. A computer-readable storage medium storing computer instructions which, when executed by a processor, perform the method of any one of claims 1 to 7.
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| CN202010586986.0A CN111829467B (en) | 2020-06-24 | 2020-06-24 | Wiring evaluation method and system based on wiring angle and position |
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| CN107767366B (en) * | 2017-09-22 | 2019-09-20 | 全球能源互联网研究院有限公司 | A kind of transmission line of electricity approximating method and device |
| CN108961276B (en) * | 2018-04-04 | 2020-09-25 | 国网智能科技股份有限公司 | Distribution line inspection data automatic acquisition method and system based on visual servo |
| CN109741325B (en) * | 2019-01-14 | 2022-08-16 | 南京理工大学 | Intelligent detection method for wiring verticality |
| CN110189344B (en) * | 2019-04-24 | 2022-09-13 | 河海大学常州校区 | Method for extracting straight line segment in electric power disconnecting link image |
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