CN106295665A - A kind of transformer station readings of pointer type meters automatic identifying method - Google Patents
A kind of transformer station readings of pointer type meters automatic identifying method Download PDFInfo
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- CN106295665A CN106295665A CN201610661013.2A CN201610661013A CN106295665A CN 106295665 A CN106295665 A CN 106295665A CN 201610661013 A CN201610661013 A CN 201610661013A CN 106295665 A CN106295665 A CN 106295665A
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Abstract
The present invention relates to a kind of transformer station readings of pointer type meters automatic identifying method, first a kind of image automatic shooting and radio transmitting device are provided, described shooting image is carried out pretreatment, treated photo is carried out needle locating, then the pointer instrument value behind location is carried out automatic interpretation；If described reading no to scale scope or None-identified, image is additionally stored, and manually carry out reading.The present invention is by transformer station's pointer instrument automatic interpretation, it is possible to effectively solve manual read's number efficiency low with inaccurate problem.
Description
Technical field
The present invention relates to transformer station's pointer instrument and read technical field, particularly a kind of transformer station readings of pointer type meters
Automatic identifying method.
Background technology
Pointer instrument simple structure, low price, easy to maintenance, reliability is high, anticorrosive property and anti-electromagnetic field interference
Ability is strong, and based on above advantage, the chopper great majority of transformer station use pointer instrument to monitor its force value.At present, run
Attendant is when carrying out safeguarding tour, and major part relies on the mode of artificial interpretation to read the force value of chopper, and record is at paper
On, again data one rule that be recorded is entered manually into computer after tour.This traditional method not only efficiency is low,
The most easily being affected by the subjective factors of people causes obtained chopper indicating value result inaccurate.In recent years, along with digitized map
As the development for the treatment of technology and perfect, the identification of pointer instrument also obtain huge progress.Therefore, ask for above-mentioned
Topic is the object that the present invention studies.
Summary of the invention
In view of this, the purpose of the present invention is to propose to a kind of transformer station readings of pointer type meters automatic identifying method, it is possible to
Effectively solve the problems such as manual read's number inefficiency problem, the error in reading that solution causes due to factors such as fatigues.
The present invention uses below scheme to realize: a kind of transformer station readings of pointer type meters automatic identifying method, including following
Step:
Step S1: provide an image capture module, described image capture module that transformer station's pointer instrument is carried out image taking,
And by a wireless transport module, the image information gathered is transmitted to computer；
Step S2: the described computer image information to uploading carries out pretreatment；
Step S3: the image using the Hough transform method improved to process step S2 carries out needle locating；
Step S4: the image behind location is carried out automatic interpretation, obtains the reading of described transformer station pointer instrument；
Step S5: if described reading no to scale scope or None-identified reading, image information is additionally stored, and is forwarded to
Staff carries out artificial interpretation.
Further, described transformer station pointer instrument is chopper density Pressure gauge.
Further, described step S2 specifically includes following steps:
Step S21: image information is carried out homomorphic filtering process, is shown as the product of illumination function and reflective function by image table,
Low-frequency range is filtered in order to filter the problem that illumination solves uneven illumination with wave filter；
Step S22: the image after processing homomorphic filtering carries out binary conversion treatment and micronization processes, extracts the skeleton of image, shape
Become the image easily extracting characteristics of image.
Further, described step S3 specifically includes following steps:
Step S31: determine the center of circle, carries out feature extraction by Hough transform method to image, the feature bag wherein extracted
Include: circle, the center of circle, pointer, a plurality of graduation mark and shatter-proof liquid straight line；
Step S32: filter shatter-proof liquid without the straight line in the center of circle by filtering, is defined as referring to by one the longest in residue straight line
Pin；Circle is defined as instrumental panel；
Further, described step S4 specifically includes following steps:
Step S41: instrumental panel is divided into one, two, three, four totally four quadrants；
Step S42: calculate pointer and start index according to the slope meter of quadrant affiliated in the middle part of two end points of pointer and pointer
Angle, and then obtain the reading of pointer instrument.
Compared with prior art, the present invention has following beneficial effect: the present invention can effectively solve the problem that artificial reading efficiency is low
Under problem, solve the problems such as the error in reading that causes due to the factor such as tired.
Accompanying drawing explanation
Fig. 1 is the method flow schematic diagram of the present invention.
Fig. 2 is the chopper density Pressure gauge that in the embodiment of the present invention, image capture module collects.
Fig. 3 be in the embodiment of the present invention homomorphic filtering process after image.
Fig. 4 is the image in the embodiment of the present invention after micronization processes.
Fig. 5 is the circle and the center of circle detected in the embodiment of the present invention.
Fig. 6 is the pointer detected in the embodiment of the present invention and shatter-proof liquid straight line.
Fig. 7 is that in the embodiment of the present invention, meter reading calculates schematic diagram.
[primary clustering symbol description]
In figure: 1 is shatter-proof liquid straight line, and 2 is pointer straight line, and 3 is the center of circle, 4 is circle, and 5 is start index, and 6 for terminating scale.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the present invention will be further described.
As it is shown in figure 1, present embodiments provide a kind of transformer station readings of pointer type meters automatic identifying method, specifically include
Following steps:
Step S1: provide an image capture module, described image capture module that transformer station's pointer instrument is carried out image taking,
And by a wireless transport module, the image information gathered is transmitted to computer；
Step S2: the described computer image information to uploading carries out pretreatment；
Step S3: the image using the Hough transform method improved to process step S2 carries out needle locating；
Step S4: the image behind location is carried out automatic interpretation, obtains the reading of described transformer station pointer instrument；
Step S5: if described reading no to scale scope or None-identified reading, image information is additionally stored, and is forwarded to
Staff carries out artificial interpretation.
In the present embodiment, described transformer station pointer instrument is chopper density Pressure gauge.
In the present embodiment, described step S2 specifically includes following steps:
Step S21: image information is carried out homomorphic filtering process, is shown as the product of illumination function and reflective function by image table,
Low-frequency range is filtered in order to filter the problem that illumination solves uneven illumination with wave filter；
Step S22: the image after processing homomorphic filtering carries out binary conversion treatment and micronization processes, extracts the skeleton of image, shape
Become the image easily extracting characteristics of image.
In the present embodiment, described step S3 specifically includes following steps:
Step S31: determine the center of circle, carries out feature extraction by Hough transform method to image, the feature bag wherein extracted
Include: circle, the center of circle, pointer, a plurality of graduation mark and shatter-proof liquid straight line；
Step S32: filter shatter-proof liquid without the straight line in the center of circle by filtering, is defined as referring to by one the longest in residue straight line
Pin；Circle is defined as instrumental panel；
In the present embodiment, described step S4 specifically includes following steps:
Step S41: instrumental panel is divided into one, two, three, four totally four quadrants；
Step S42: calculate pointer and start index according to the slope meter of quadrant affiliated in the middle part of two end points of pointer and pointer
Angle, and then obtain the reading of pointer instrument.
It is also preferred that the left in the present embodiment, affected by instrument surrounding and illumination, the image information collected is wrapped
Containing noise, picture is unintelligible, ultimately results in image recognition inefficiency, the low even error in reading of accuracy of identification, it is therefore necessary to
First the image collected is carried out pretreatment, to improve the quality of image.Fig. 2 is that the chopper collected in actual motion is used
Density Pressure gauge.
Homomorphic filtering is a kind of method processed image in a frequency domain, and its effect is to strengthen picture contrast and pressure
Contract drawing image brightness scope, thus solve the problem of uneven illumination on image.Image table is shown as illumination function and reflective function
Product, wherein, illumination frequency spectrum is concentrated mainly on low-frequency range, and reflecting spectrum is predominantly located at high band, filters low frequency with wave filter
Section just can reach the purpose filtering illumination.Fig. 3 is the image of homomorphic filtering post processing.
Image after homomorphic filtering is further processed by the present embodiment, and the present invention carries out the laggard of binaryzation to image
Row micronization processes, extracts the skeleton of image, forms the image being easier to extract characteristics of image, as shown in Figure 4.
The determination that it is critical only that straight line pointer position of pointer instrument identification, traditional Hough transform method detects
Straight line may there is certain deviation with actual pointer centrage or non-pointer be detected, for this present invention, one is proposed
The Hough transform method improved.First carrying out the determination in the center of circle: instrumental panel is circular, its center of circle is fixing, and necessarily exists
On the straight line in pointer axle center, therefore, in order to avoid the straight line detected occurring without pointer axle center or inspection when pointer is thicker
Measure the situation of non-pointer, can first find out the center of circle of instrumental panel, then filter the straight line without the center of circle.Circle can pass through
Hough transform detection obtains.In Fig. 5, "+" number for the center of circle (3) that detects, the red line at instrumental panel edge is the circle detected
(4).Next carries out the determination of straight line pointer: as shown in Figure 6, uses the method for Hough transform can extract the image bag collected
The pointer straight line (2) contained, a plurality of graduation mark and shatter-proof liquid straight line (1), the straight line of the most shatter-proof liquid is the longest, but due to shatter-proof liquid
Straight line without the instrumental panel center of circle, therefore can filter out the straight line of shatter-proof liquid according to the center of circle detected, in residue straight line
Long one is pointer.
In the present embodiment, in order to obtain the angle of pointer and start index, first instrumental panel is divided into one, two, three and
Four totally four quadrants (as shown in Figure 7), can calculate finger according to the slope of quadrant belonging in the middle part of two end points of pointer and pointer
Pin and the angle theta of start index (5), can get the manometric reading of chopper then.Final available θ=16.74 °, Pressure gauge
Reading be-0.038Mpa, the reading of algorithm identification is close with reality, the present invention propose pointer instrument recognizer be just
True.In Fig. 7,6 for terminating scale.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with
Modify, all should belong to the covering scope of the present invention.
Claims (5)
1. transformer station's readings of pointer type meters automatic identifying method, it is characterised in that: comprise the following steps:
Step S1: provide an image capture module, described image capture module that transformer station's pointer instrument is carried out image taking,
And by a wireless transport module, the image information gathered is transmitted to computer；
Step S2: the described computer image information to uploading carries out pretreatment；
Step S3: the image using the Hough transform method improved to process step S2 carries out needle locating；
Step S4: the image behind location is carried out automatic interpretation, obtains the reading of described transformer station pointer instrument；
Step S5: if described reading no to scale scope or None-identified reading, image information is additionally stored, and is forwarded to
Staff carries out artificial interpretation.
A kind of transformer station the most according to claim 1 readings of pointer type meters automatic identifying method, it is characterised in that: described
Transformer station's pointer instrument is chopper density Pressure gauge.
A kind of transformer station the most according to claim 1 readings of pointer type meters automatic identifying method, it is characterised in that: described
Step S2 specifically includes following steps:
Step S21: image information is carried out homomorphic filtering process, is shown as the product of illumination function and reflective function by image table,
Low-frequency range is filtered in order to filter the problem that illumination solves uneven illumination with wave filter；
Step S22: the image after processing homomorphic filtering carries out binary conversion treatment and micronization processes, and extracts the bone of image
Frame, forms the image easily extracting characteristics of image.
A kind of transformer station the most according to claim 1 readings of pointer type meters automatic identifying method, it is characterised in that: described
Step S3 specifically includes following steps:
Step S31: determine the center of circle, carries out feature extraction by Hough transform method to image, the feature bag wherein extracted
Include: circle, the center of circle, pointer, a plurality of graduation mark and shatter-proof liquid straight line；
Step S32: filter shatter-proof liquid without the straight line in the center of circle by filtering, is defined as referring to by one the longest in residue straight line
Pin；Circle is defined as instrumental panel.
A kind of transformer station the most according to claim 1 readings of pointer type meters automatic identifying method, it is characterised in that: described
Step S4 specifically includes following steps:
Step S41: instrumental panel is divided into one, two, three, four totally four quadrants；
Step S42: calculate pointer and start index according to the slope meter of quadrant affiliated in the middle part of two end points of pointer and pointer
Angle, and then obtain the reading of pointer instrument.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610661013.2A CN106295665B (en) | 2016-08-13 | 2016-08-13 | A kind of substation's readings of pointer type meters automatic identifying method |
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| CN201610661013.2A CN106295665B (en) | 2016-08-13 | 2016-08-13 | A kind of substation's readings of pointer type meters automatic identifying method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107081765A (en) * | 2017-03-29 | 2017-08-22 | 国网上海市电力公司 | A kind of substation inspection robot autonomous classification method and a kind of inspecting robot |
| CN107292310A (en) * | 2017-06-19 | 2017-10-24 | 电子科技大学 | A kind of circular pointer dial plate vision positioning and automatic reading method |
| CN107301412A (en) * | 2017-05-08 | 2017-10-27 | 浙江工业大学 | A kind of readings of pointer type meters method based on image procossing |
| CN108399416A (en) * | 2018-01-19 | 2018-08-14 | 武汉科技大学 | A kind of substation's pointer instrument automatic identifying method having circular arc boundary |
| CN108491838A (en) * | 2018-03-08 | 2018-09-04 | 南京邮电大学 | Pointer-type gauges registration read method based on SIFT and HOUGH |
| CN108764257A (en) * | 2018-05-23 | 2018-11-06 | 郑州金惠计算机系统工程有限公司 | A kind of pointer instrument recognition methods of various visual angles |
| CN109034170A (en) * | 2018-07-18 | 2018-12-18 | 东南大学 | A kind of round readings of pointer type meters method of switch cubicle detection device |
| CN109341933A (en) * | 2018-09-29 | 2019-02-15 | 广东电网有限责任公司 | On-line monitoring method, the apparatus and system of pressure value |
| CN109993166A (en) * | 2019-04-03 | 2019-07-09 | 同济大学 | The readings of pointer type meters automatic identifying method searched based on scale |
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| CN103927507A (en) * | 2013-01-12 | 2014-07-16 | 山东鲁能智能技术有限公司 | Improved multi-instrument reading identification method of transformer station inspection robot |
| CN104615972A (en) * | 2013-11-05 | 2015-05-13 | 深圳中兴力维技术有限公司 | Intelligent indication method of pointer instrument and device thereof |
| CN105426809A (en) * | 2015-08-18 | 2016-03-23 | 张大堃 | Method for automatically identifying instrument pointer |
| CN105550683A (en) * | 2015-12-07 | 2016-05-04 | 重庆大学 | Vision-based pointer instrument automatic reading system and method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107081765A (en) * | 2017-03-29 | 2017-08-22 | 国网上海市电力公司 | A kind of substation inspection robot autonomous classification method and a kind of inspecting robot |
| CN107301412A (en) * | 2017-05-08 | 2017-10-27 | 浙江工业大学 | A kind of readings of pointer type meters method based on image procossing |
| CN107301412B (en) * | 2017-05-08 | 2019-12-17 | 浙江工业大学 | Pointer instrument reading method based on image processing |
| CN107292310A (en) * | 2017-06-19 | 2017-10-24 | 电子科技大学 | A kind of circular pointer dial plate vision positioning and automatic reading method |
| CN108399416A (en) * | 2018-01-19 | 2018-08-14 | 武汉科技大学 | A kind of substation's pointer instrument automatic identifying method having circular arc boundary |
| CN108491838A (en) * | 2018-03-08 | 2018-09-04 | 南京邮电大学 | Pointer-type gauges registration read method based on SIFT and HOUGH |
| CN108491838B (en) * | 2018-03-08 | 2021-08-03 | 南京邮电大学 | Pointer type instrument indicating number reading method based on SIFT and HOUGH |
| CN108764257A (en) * | 2018-05-23 | 2018-11-06 | 郑州金惠计算机系统工程有限公司 | A kind of pointer instrument recognition methods of various visual angles |
| CN109034170A (en) * | 2018-07-18 | 2018-12-18 | 东南大学 | A kind of round readings of pointer type meters method of switch cubicle detection device |
| CN109034170B (en) * | 2018-07-18 | 2022-02-11 | 东南大学 | Reading method for circular pointer type instrument of switch cabinet detection device |
| CN109341933A (en) * | 2018-09-29 | 2019-02-15 | 广东电网有限责任公司 | On-line monitoring method, the apparatus and system of pressure value |
| CN109993166A (en) * | 2019-04-03 | 2019-07-09 | 同济大学 | The readings of pointer type meters automatic identifying method searched based on scale |
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