CN104442917A - Track detection method - Google Patents
Track detection method Download PDFInfo
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- CN104442917A CN104442917A CN201410855777.6A CN201410855777A CN104442917A CN 104442917 A CN104442917 A CN 104442917A CN 201410855777 A CN201410855777 A CN 201410855777A CN 104442917 A CN104442917 A CN 104442917A
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- China
- Prior art keywords
- track
- image
- detection method
- image processing
- described track
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention provides a track detection method. The track detection method comprises the steps that lasers are used for irradiating the top face and the two side faces of a track at the same time; images of the parts, irradiated by the lasers, of the track are shot; image processing is carried out on the images through image processing equipment, so that a stereoscopic skeleton map of the track is built according to the images; image processing is carried out on the stereoscopic skeleton map through the image processing equipment, so that the geometrical parameter of the track is extracted according to the stereoscopic skeleton map; the geometrical parameter of the track is compared with the geometrical parameter of a standard track, and the numerical value of undulatory wear of the track is calculated. The detection precision and detection efficiency of the undulatory wear of the track can be improved.
Description
Technical field
The present invention relates to track, particularly relate to a kind of track detection method.
Background technology
Due to the use of increasing high speed, heavily loaded guideway vehicle, exacerbate the generation of rail undulatory wear, after rail produces undulatory wear, in order to control the development of undulatory wear speed, needing by carrying out to rail the ride comfort that preventive grinding improves rail profile, before polishing to rail, usually needing to detect rail, and obtain the observed reading of rail undulatory wear, for follow-up polishing operation provides reference.
At present, one of rail undulatory wear detection technique adopts short string chord measurement, in short string chord measurement, adopt contact displacement meter to obtain the distance detecting three measuring points between longeron and rail, using the line of two measuring points on rail as measurement string, middle measuring point is to the observed reading of versed sine as rail undulatory wear measuring string.
When adopting short string chord measurement to carry out undulatory wear detection, the amplitude of all measure the items needs to be painted on drawing, and need artificial interpretation to transfinite and calculate deduction of points, therefore often there is the problem that take off data is bigger than normal or less than normal, result of a measurement can not actual response rail wear situation, for follow-up polishing operation brings puzzlement.
Summary of the invention
The invention provides a kind of track detection method, to improve accuracy of detection and the detection efficiency of track undulatory wear.
The invention provides a kind of track detection method, comprising:
The end face of track and two sides laser are irradiated simultaneously;
Take the image that described track is divided by described laser irradiating part;
Image processing equipment is utilized to carry out image procossing to described image, to set up the stereo profile figure of described track according to described image;
Image processing equipment is utilized to carry out image procossing to described stereo profile figure, to extract the geometric parameter of described track according to described stereo profile figure;
The geometric parameter of described track and the geometric parameter of standard trajectory are contrasted, and calculates the numerical value of the undulatory wear of described track.
Based on above-mentioned, track detection method provided by the invention, by the image that shooting rail top face and two sides are irradiated with a laser, just image processing equipment can be utilized to carry out image procossing to described image, to set up the stereo profile figure of track according to described image, and the geometric parameter of track is extracted according to described stereo profile figure, as long as afterwards the geometric parameter of the geometric parameter obtained and standard trajectory is contrasted, just the numerical value of the undulatory wear of track can be obtained, due to the penetrating capacity of laser and antijamming capability strong, therefore the end face of laser irradiation track and two sides are adopted can to improve the visibility of subsequent images shooting, make follow-up take off data can not be subject to the impact of dust or other light, ensure that the accuracy of take off data.Track detection method provided by the invention, compared with existing method of inspection, no longer too relies on the manual operations of technical personnel, and antijamming capability is strong, and precision is high, and reliability is strong, therefore improves accuracy of detection and the detection efficiency of track undulatory wear.
Accompanying drawing explanation
The diagram of circuit of a kind of track detection method that Fig. 1 provides for the embodiment of the present invention.
Detailed description of the invention
Please refer to Fig. 1, the concrete steps of a kind of track detection method that the embodiment of the present invention provides are as follows:
Step 101, irradiates the end face of track and two sides laser simultaneously.
Because the end face of track and two sides can produce undulatory wear in the middle of use, in order to set up the stereo profile figure of track and obtain the numerical value of undulatory wear accurately in subsequent step, therefore need first to carry out laser irradiation to the end face of track and two sides.Due to the penetrating capacity of laser and antijamming capability strong, therefore the end face of laser irradiation track and two sides are adopted can to improve the visibility of subsequent images shooting, make follow-up take off data can not be subject to the impact of dust or other light, ensure that the accuracy of take off data.。
Preferably, step 101 comprises step 106 and step 107.
Step 106, irradiates the end face of track and two sides laser simultaneously, and to form a continuous print illuminated line on the end face and two sides of described track, described illuminated line extends along the circumference of described track.
Because laser forms a continuous print illuminated line in orbit, the intensity being more conducive to ensure laser is irradiated compared to laser large area, thus be more conducive to avoid dust and other light to affect the visibility of subsequent images shooting, thus further ensure the accuracy of take off data.Certainly, laser large area also can be adopted to irradiate track, and the present invention is not specifically limited this.
Step 107, makes described illuminated line be moved to the other end of described track along the length direction of described track by one end of described track.
Because the circumference of illuminated line along described track extends, therefore when illuminated line moves to the other end of described track by one end of described track along the length direction of described track, just the irradiation to whole piece track can be completed, easy to operate and rail top face and the not irradiated situation of two sides part can not be produced.Be beneficial to the accuracy ensureing take off data.
Step 102, takes the image that described track is divided by described laser irradiating part.
By the image that shooting track is divided by described laser irradiating part, for the follow-up image procossing that carries out is prepared.
Preferably, follow the movement of described illuminated line, take the image at the position that described track is irradiated by described illuminated line.The visibility of filming image can be ensured thus.
Step 103, utilizes image processing equipment to carry out image procossing to described image, to set up the stereo profile figure of described track according to described image.
Image processing equipment can set up the stereo profile figure of described track according to described image, utilize image processing equipment can ensure to be formed the accuracy of stereo profile figure.
Step 104, utilizes image processing equipment to carry out image procossing to described stereo profile figure, to extract the geometric parameter of described track according to described stereo profile figure.
Image processing equipment can extract the geometric parameter of described track according to described stereo profile figure, for the numerical value of the undulatory wear of subsequent calculations track is prepared, utilize image processing equipment can ensure the accuracy of the geometric parameter extracting track.
Step 105, contrasts the geometric parameter of described track and the geometric parameter of standard trajectory, and calculates the numerical value of the undulatory wear of described track.
Image processing equipment or computer device can be utilized to carry out the comparison work of parameter, to ensure the accurately fixed of calculating, certainly also can adopt artificial calculating.
The track detection method that the embodiment of the present invention provides, accurate reference data can be provided for follow-up track polishing work, be beneficial to and realize precisely polishing, avoid the subjectivity of polishing operation, randomness, solve in the mode of track polishing in the past the problems such as quantity not sufficient of polishing, surface transition be bad.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (3)
1. a track detection method, is characterized in that, comprising:
The end face of track and two sides laser are irradiated simultaneously;
Take the image that described track is divided by described laser irradiating part;
Image processing equipment is utilized to carry out image procossing to described image, to set up the stereo profile figure of described track according to described image;
Image processing equipment is utilized to carry out image procossing to described stereo profile figure, to extract the geometric parameter of described track according to described stereo profile figure;
The geometric parameter of described track and the geometric parameter of standard trajectory are contrasted, and calculates the numerical value of the undulatory wear of described track.
2. track detection method according to claim 1, is characterized in that, the end face of track and two sides laser is irradiated simultaneously and comprises:
The end face of track and two sides laser are irradiated, to form a continuous print illuminated line on the end face and two sides of described track, described illuminated line extends along the circumference of described track simultaneously;
Described illuminated line is made to be moved to the other end of described track along the length direction of described track by one end of described track.
3. track detection method according to claim 2, is characterized in that, takes described track and is comprised by the image that described laser irradiating part divides:
Follow the movement of described illuminated line, take the image at the position that described track is irradiated by described illuminated line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410855777.6A CN104442917A (en) | 2014-12-31 | 2014-12-31 | Track detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410855777.6A CN104442917A (en) | 2014-12-31 | 2014-12-31 | Track detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104442917A true CN104442917A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410855777.6A Pending CN104442917A (en) | 2014-12-31 | 2014-12-31 | Track detection method |
Country Status (1)
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| CN (1) | CN104442917A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106080659A (en) * | 2016-07-18 | 2016-11-09 | 广州荣知通信息科技有限公司 | Track detection method |
| CN106274979A (en) * | 2016-08-30 | 2017-01-04 | 大连民族大学 | Rail wear automatic detection device |
| CN108001481A (en) * | 2017-12-07 | 2018-05-08 | 石家庄铁道大学 | Vehicular wheel track displacement image detecting method and detection device based on bidifly light source |
| CN108248634A (en) * | 2018-01-24 | 2018-07-06 | 西南交通大学 | Track switch and track full-sized abrasion vision measurer and its measuring method |
| CN110803198A (en) * | 2019-11-29 | 2020-02-18 | 中车南京浦镇车辆有限公司 | Rail vehicle derailment detection method based on bogie contour line |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106080659A (en) * | 2016-07-18 | 2016-11-09 | 广州荣知通信息科技有限公司 | Track detection method |
| CN106274979A (en) * | 2016-08-30 | 2017-01-04 | 大连民族大学 | Rail wear automatic detection device |
| CN106274979B (en) * | 2016-08-30 | 2018-06-22 | 大连民族大学 | Rail wear automatic detection device |
| CN108001481A (en) * | 2017-12-07 | 2018-05-08 | 石家庄铁道大学 | Vehicular wheel track displacement image detecting method and detection device based on bidifly light source |
| CN108001481B (en) * | 2017-12-07 | 2019-04-09 | 石家庄铁道大学 | Vehicular wheel track displacement image detecting method and detection device based on bidifly light source |
| CN108248634A (en) * | 2018-01-24 | 2018-07-06 | 西南交通大学 | Track switch and track full-sized abrasion vision measurer and its measuring method |
| CN110803198A (en) * | 2019-11-29 | 2020-02-18 | 中车南京浦镇车辆有限公司 | Rail vehicle derailment detection method based on bogie contour line |
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Application publication date: 20150325 |