CN110514118A - A kind of electric railway insulator geometric tolerance detection device - Google Patents
A kind of electric railway insulator geometric tolerance detection device Download PDFInfo
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- CN110514118A CN110514118A CN201910830559.XA CN201910830559A CN110514118A CN 110514118 A CN110514118 A CN 110514118A CN 201910830559 A CN201910830559 A CN 201910830559A CN 110514118 A CN110514118 A CN 110514118A
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- 239000012212 insulator Substances 0.000 title claims abstract description 80
- 238000001514 detection method Methods 0.000 title claims abstract description 19
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 239000000725 suspension Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 19
- 238000009413 insulation Methods 0.000 claims description 17
- 229910052573 porcelain Inorganic materials 0.000 claims description 17
- 230000009977 dual effect Effects 0.000 claims description 5
- 238000003708 edge detection Methods 0.000 claims description 4
- 230000000877 morphologic effect Effects 0.000 claims description 4
- 230000010339 dilation Effects 0.000 claims description 2
- 230000003628 erosive effect Effects 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims description 2
- 238000007781 pre-processing Methods 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 239000011800 void material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
Classifications
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B11/272—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes using photoelectric detection means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/20—Image enhancement or restoration using local operators
- G06T5/30—Erosion or dilatation, e.g. thinning
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/70—Denoising; Smoothing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/90—Dynamic range modification of images or parts thereof
- G06T5/92—Dynamic range modification of images or parts thereof based on global image properties
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/12—Edge-based segmentation
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Insulators (AREA)
Abstract
A kind of electric railway insulator geometric tolerance detection device belongs to field of track traffic, suitable for measuring the detection of the geometric tolerances such as electrification railway contact net insulator linear degree and upper and lower metal-ware concentricity.It is characterized by comprising mechanical system, image capturing system and identifying system compositions；Mechanical system includes braced frame (1), insulator to be measured (2), rotary turret table (4), insulator suspension hook (5), image capturing system is made of fluorescent screen (3) and ccd sensor (6), and identifying system is made of data line (7) and industrial personal computer (8)；It is fixed in braced frame (1) rotary turret table (4), rotary turret table (4) is connected with insulator suspension hook (5)；Insulator to be measured (2) is hung at insulator suspension hook (5) and is hung down naturally, ccd sensor (6) passes through data line (7) connection industrial personal computer (8).The arrangement achieves the measurements of the insulator geometric tolerance of multi-angle, ensure that the detection accuracy of geometric tolerance.
Description
Technical field
The invention belongs to field of track traffic, are suitable for measurement electrification railway contact net insulator linear degree and up and down gold
Belong to the detection of the geometric tolerances such as attachment concentricity.
Background technique
Insulator is the important spare part of electrification railway contact net, is a kind of electrical insulation device.Insulator is in reality
In manufacture and assembling process, due to being influenced by conditions such as base precision, firing condition and assembly precisions, the straight line of insulator
Degree and the concentricity of upper and lower metal-ware assembly will appear deviation.Insulator is using the preceding inspection for all having to pass through geometric tolerance
It surveys, geometric tolerance measurement is mainly coaxial including insulator porcelain piece axis verticality detection (abbreviation straightness), upper and lower metal-ware
Degree detection (abbreviation concentricity), existing straightness, coaxiality detecting method are to jump insulator right angle setting by measurement circle
Dynamic mode is detected.Since the volume of insulator, weight are very big, above-mentioned detection method working efficiency is low, safety is hidden
Suffer from greatly, while the lack of standardization of manual operation will lead to the inaccurate of measurement result, further will lead to substandard product and passes through matter
Inspection, comes into the market.
For the test problems of insulator geometric tolerance, this patent devises a kind of electric railway insulator geometric tolerance
Detection device, the device realize the insulator geometric tolerance measurement of multi-angle, ensure that morpheme by the method for image recognition
The detection accuracy of tolerance.
Summary of the invention
The invention patent technology to be solved is the geometric tolerance measurement problem for railway traffic contact network insulator,
Devise a kind of electric railway insulator geometric tolerance detection device.
Technical solution used by the invention patent is: a kind of electric railway insulator geometric tolerance measuring device, main
It to be made of mechanical system, image capturing system and identifying system.Mechanical system includes braced frame (1), insulator to be measured
(2), rotary turret table (4), insulator suspension hook (5) composition, image capturing system is by fluorescent screen (3) and ccd sensor (6) group
At identifying system is made of data line (7) and industrial personal computer (8).
This measuring device utilizes identifying system by ccd sensor (6) the acquisition insulation subgraph in image capturing system
In industrial personal computer to insulation subgraph identified to obtain the geometric tolerance of insulator；
Rotary turret table (4) in the mechanical system can be controlled by industrial personal computer (8) to be turned clockwise or counterclockwise
It is dynamic, to realize multi-angle acquisition insulation subgraph, facilitate the measurement error for reducing geometric tolerance.
Industrial personal computer (8) in the identifying system can know multiple images that ccd sensor (6) collect
Not, insulator porcelain piece and metal-ware can be accurately distinguished in identification process, and by carrying out multi-angle to porcelain piece and metal-ware
Multiple spot identification measurement, to realize that insulator geometric tolerance detects.
The invention patent has a characteristic that
A kind of electric railway insulator geometric tolerance detection device, mainly by mechanical system, image capturing system and knowledge
Other system composition.Mechanical system includes braced frame (1), insulator to be measured (2), rotary turret table (4), insulator suspension hook (5) group
At image capturing system is made of fluorescent screen (3) and ccd sensor (6), and identifying system is by data line (7) and industry control
Machine (8) composition.
Rotary turret table (4) can be controlled by industrial personal computer (8), have the function of to rotate specified angle, can be by clockwise
Or rotate counterclockwise and insulator is driven to be rotated, to realize the function of obtaining insulation subgraph from different perspectives, realization subtracts
The purpose of small measurement error.
Ccd sensor (6) has image collecting function, can quickly, clearly obtain insulation subgraph and be transferred to work
Control machine is identified.
Industrial personal computer (8) has control and image identification function, both can be by the rotation angle of control rotary turret table (4), also
To insulation subgraph acquired by ccd sensor (6) can identify the datum axis of determining insulator by subsidiary software,
And it detects and obtains the geometric tolerances such as straightness and the concentricity of insulator.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only one embodiment of the present of invention, for this
For the technical staff of field, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of front view of electric railway insulator geometric tolerance detection device provided in an embodiment of the present invention,
In figure, braced frame 1, insulator to be measured 2, rotary turret table 4, insulator suspension hook 5, fluorescent screen 3, ccd sensor 6, data are passed
Defeated line 7, industrial personal computer 8.
Fig. 2 is the schematic diagram after electric railway insulator provided in an embodiment of the present invention is rotated by 90 °.
Fig. 3 is insulator recognizer flow chart.
Fig. 4 is straightness and concentricity detection process schematic diagram.
Specific embodiment
A kind of electric railway insulator geometric tolerance structure of the detecting device signal is as shown in Figure 1 and Figure 2,
Mainly it is made of mechanical system, image capturing system and identifying system.Mechanical system include braced frame (1), to
Insulator (2), rotary turret table (4), insulator suspension hook (5) composition are surveyed, image capturing system is sensed by fluorescent screen (3) and CCD
Device (6) composition, identifying system are made of data line (7) and industrial personal computer (8).
Insulator to be measured (2) is hung at insulator suspension hook (5) and is hung down naturally, by ccd sensor (6) perpendicular to
Insulator axis obtains insulator two dimensional image, which is transmitted in industrial personal computer (8) by data line (7), is started
Mating identification software, carries out image recognition to accessory each in insulator (2) respectively, and identification obtains metal-ware in insulator (2)
With attach porcelain piece, and provide the virtual axis and geometric tolerance measured value of the insulator.The detailed process of recognizer such as Fig. 3 institute
Show, comprising the following steps:
1, image preprocessing: RGB weighted average gray processing processing is carried out to insulation subgraph, then through spatial threshold value and directly
After square figure equalization processing, the contrast of image is improved, characteristics of needs is highlighted.
2, pure insulation subgraph Image Edge-Detection: is obtained by Canny edge detection algorithm.First pass through Gauss filter
Wave method filters out gray level image major part noise, used Gaussian filter function are as follows:Its
In, x, y are the transverse and longitudinal coordinate of pixel in figure, and σ is variance；Then threshold process is carried out to image by dual threashold value-based algorithm, led to
It crosses eight neighborhood searching algorithm to calculate connected domain area and be stored in one-dimension array, be calculated in the one-dimension array using rootlet heap algorithm
Preceding K maximum value simultaneously sorts, and obtains the intermediate value midarea of K number, by dual threshold be respectively set as 0.5*midarea and
Midarea, subsequent connected domain of the removal not within the scope of dual threshold, and remaining connected domain is merged to the edge for obtaining insulator
Detection image.
3, morphological image process: carrying out the interference of the erosion operation removal noise in morphology to the image after segmentation,
The case where mistake removes target image in order to prevent simultaneously occurs, and to carry out morphological dilations processing to image.
4, the identification process of image includes to the identification of insulator porcelain piece and the identification of upper and lower metal-ware.Using Hough
Change detection method, by edge feature information MAP complicated in image be parameter space in cluster solve the problems, such as, use
Point on edge image is corresponded to parameter p-theta plane for p=x*cos (theta)+y*sin (theta) by parametric equation
On a curve on.Identification first to the insulation subgraph of acquirement extract to obtain each point of porcelain piece C1~Cn of insulator and
Upper and lower metal-ware F1, F2, and taken a little in the umbrella dish of each point of porcelain piece C1~Cn and connection neck marginal position respectively, umbrella is calculated
Dish and connect neck marginal point midpoint, connection midpoint obtain the virtual axis L1~Ln of each point of porcelain piece, then to virtual axis into
Row fitting obtains the datum axis BL of insulator.Finally the identification of metal-ware F1, F2 is obtained using identical recognition methods
Metal-ware virtual axis S1, S2, as shown in Figure 4.
5, the maximum value for differing the virtual axis L1~Ln and datum axis BL of each point of porcelain piece in the horizontal direction as
The measured value of insulator linear degree under the angle differs upper and lower metal-ware virtual axis S1, S2 most with datum axis BL
Measured value of the big value as insulator concentricity under the angle.
It carries out taking again after rotating 30 ° by industrial personal computer (8) control rotary turret table (4) and mutually be revolved with identification to insulator (2)
Until after turning 360 °, using the greatest measurement of insulator linear degree and concentricity in different angle as the insulator geometric tolerance
Detected value.
The above, a kind of preferable specific embodiment only of the invention, but protection scope of the present invention is not limited to
In this, anyone skilled in the art in the technical scope disclosed by the present invention, the variation that can readily occur in or
Replacement, should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection of claim
Subject to range.
Claims (3)
1. a kind of electric railway insulator geometric tolerance measuring device, it is characterised in that: including mechanical system, Image Acquisition system
System and identifying system composition；Mechanical system includes braced frame (1), insulator to be measured (2), rotary turret table (4), insulator suspension hook
(5) form, image capturing system is made of fluorescent screen (3) and ccd sensor (6), identifying system by data line (7) and
Industrial personal computer (8) composition；
It is fixed in braced frame (1) rotary turret table (4), rotary turret table (4) is connected with insulator suspension hook (5)；By insulation to be measured
Sub (2) hang at insulator suspension hook (5) and hang down naturally, insulator two dimensional image are obtained by ccd sensor (6), by this
Image is transmitted in industrial personal computer (8) by data line (7), carries out image recognition to accessory each in insulator (2) respectively, is known
Metal-ware in insulator (2) is not obtained and attaches porcelain piece, and provides the virtual axis and geometric tolerance measured value of the insulator.
2. the method for application device as described in claim 1, it is characterised in that: this measuring device passes through in image capturing system
Ccd sensor (6) acquisition insulation subgraph, identifies insulation subgraph using the industrial personal computer in identifying system and is insulated
The geometric tolerance of son；
Rotary turret table (4) in the mechanical system can be rotated clockwise or counterclockwise by industrial personal computer (8) control, thus
Realize multi-angle acquisition insulation subgraph；
Multiple images that industrial personal computer (8) in the identifying system collects ccd sensor (6) identify, identify
Cheng Zhongneng accurately distinguishes insulator porcelain piece and metal-ware, and is surveyed by carrying out the identification of multi-angle multiple spot to porcelain piece and metal-ware
Amount realizes the detection of insulator geometric tolerance；
Rotary turret table (4) can be controlled by industrial personal computer (8), have the function of to rotate specified angle, can be by clockwise or inverse
Hour hands rotation drives insulator to be rotated, to realize the function of obtaining insulation subgraph from different perspectives.
3. according to the method described in claim 2, it is characterized in that, specifically includes the following steps:
1) image preprocessing: RGB weighted average gray processing processing is carried out to insulation subgraph, then through spatial threshold value and histogram
Equalization processing；
2) pure insulation subgraph Image Edge-Detection: is obtained by Canny edge detection algorithm；First pass through gaussian filtering side
Method filters out gray level image noise, then carries out threshold process to image by dual threashold value-based algorithm, passes through eight neighborhood searching algorithm meter
It calculates connected domain area and is stored in one-dimension array, calculate the preceding K maximum value in the one-dimension array using rootlet heap algorithm and sort,
The intermediate value midarea of K number is obtained, dual threshold is respectively set as 0.5*midarea and midarea, then removal is not double
Connected domain in threshold range, and remaining connected domain is merged to the edge-detected image for obtaining insulator；
3) morphological image process: the interference of the erosion operation removal noise in morphology is carried out to the image after segmentation, and right
Image carries out morphological dilations processing；
4) identification process of image includes to the identification of insulator porcelain piece and the identification of upper and lower metal-ware；Using Hough transform
Detection method solves the problems, such as edge feature information MAP complicated in image for the cluster in parameter space；
Identification extracts to obtain each point of porcelain piece C1~Cn of insulator to the insulation subgraph of acquirement first and upper and lower metal is attached
Part F1, F2, and taken a little in the umbrella dish of each point of porcelain piece C1~Cn and connection neck marginal position respectively, umbrella dish and connection neck is calculated
The midpoint of marginal point, connection midpoint obtain the virtual axis L1~Ln of each point of porcelain piece, then are fitted to obtain to virtual axis
The datum axis BL of insulator；Metal-ware void finally is obtained to the identification of metal-ware F1, F2 using identical recognition methods
Quasi- axis S1, S2；
5) maximum value for differing the virtual axis L1~Ln and datum axis BL of each point of porcelain piece in the horizontal direction is as the angle
Spend the measured value of lower insulator linear degree, the maximum value that upper and lower metal-ware virtual axis S1, S2 are differed with datum axis BL
Measured value as insulator concentricity under the angle；
It carries out taking again after rotating 30 ° by industrial personal computer (8) control rotary turret table (4) and mutually be rotated with identification to insulator (2)
Until after 360 °, examined the greatest measurement of insulator linear degree and concentricity in different angle as the insulator geometric tolerance
Measured value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910830559.XA CN110514118A (en) | 2019-09-04 | 2019-09-04 | A kind of electric railway insulator geometric tolerance detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910830559.XA CN110514118A (en) | 2019-09-04 | 2019-09-04 | A kind of electric railway insulator geometric tolerance detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112330659A (en) * | 2020-11-24 | 2021-02-05 | 成都信息工程大学 | Geometric tolerance symbol segmentation method combining LSD (least squares) linear detection and connected domain marking method |
| CN112403951A (en) * | 2020-11-09 | 2021-02-26 | 广东电网有限责任公司电力科学研究院 | Pillar insulator screening method and device based on cement cementing eccentricity |
| CN116735497A (en) * | 2023-06-14 | 2023-09-12 | 超创数能科技有限公司 | Automatic detection device, method and system for annular concave structure of porcelain insulator |
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| CN203298723U (en) * | 2013-06-04 | 2013-11-20 | 山东工业陶瓷研究设计院有限公司 | Combined test tool for insulator geometric tolerance |
| CN104819689A (en) * | 2015-01-28 | 2015-08-05 | 山西迪迈沃科光电工业有限公司 | Geometric tolerance measurement method |
| CN210533280U (en) * | 2019-09-04 | 2020-05-15 | 中铁检验认证中心有限公司 | Electrified railway insulator geometric tolerances detection device |
-
2019
- 2019-09-04 CN CN201910830559.XA patent/CN110514118A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203298723U (en) * | 2013-06-04 | 2013-11-20 | 山东工业陶瓷研究设计院有限公司 | Combined test tool for insulator geometric tolerance |
| CN104819689A (en) * | 2015-01-28 | 2015-08-05 | 山西迪迈沃科光电工业有限公司 | Geometric tolerance measurement method |
| CN210533280U (en) * | 2019-09-04 | 2020-05-15 | 中铁检验认证中心有限公司 | Electrified railway insulator geometric tolerances detection device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112403951A (en) * | 2020-11-09 | 2021-02-26 | 广东电网有限责任公司电力科学研究院 | Pillar insulator screening method and device based on cement cementing eccentricity |
| CN112330659A (en) * | 2020-11-24 | 2021-02-05 | 成都信息工程大学 | Geometric tolerance symbol segmentation method combining LSD (least squares) linear detection and connected domain marking method |
| CN112330659B (en) * | 2020-11-24 | 2023-04-07 | 成都信息工程大学 | Geometric tolerance symbol segmentation method combining LSD (least squares) linear detection and connected domain marking method |
| CN116735497A (en) * | 2023-06-14 | 2023-09-12 | 超创数能科技有限公司 | Automatic detection device, method and system for annular concave structure of porcelain insulator |
| CN116735497B (en) * | 2023-06-14 | 2024-04-26 | 超创数能科技有限公司 | Automatic detection device, method and system for annular concave structure of porcelain insulator |
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