CN103234526B - Wheel-rail contact relationship visual detection device and detection method thereof - Google Patents
Wheel-rail contact relationship visual detection device and detection method thereof Download PDFInfo
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- CN103234526B CN103234526B CN201310161879.3A CN201310161879A CN103234526B CN 103234526 B CN103234526 B CN 103234526B CN 201310161879 A CN201310161879 A CN 201310161879A CN 103234526 B CN103234526 B CN 103234526B
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Abstract
The present invention relates to field of track traffic, be specially a kind of wheel-rail contact relationship visual detection device and detection method thereof.Wheel-rail contact relationship visual detection device includes test the speed unit, trigger element, shooting unit, light source, processing unit and label row；Wherein, light source includes area source；Test the speed unit, area source, trigger element and shooting unit is sequentially distributed along the direct of travel of train；Area source is two；Two area sources lay respectively at the both sides of tested rail；Shooting unit is two；Two shooting unit lay respectively at the both sides of tested rail；And be positioned at tested rail side shooting unit relative with the area source being positioned at this tested rail opposite side；Label row include being sequentially distributed the multiple labels in detection region along the direct of travel of train；A kind of wheel-rail contact relationship visual detection device of present invention offer and detection method thereof, it is possible to the profile capturing tested wheel and rail become apparent from, thus react its contact situation more intuitively.
Description
Technical field
The present invention relates to field of track traffic, in particular to a kind of wheel-rail contact relationship visual detection device and detection method thereof.
Background technology
Owing to the wheel of train and the shape of rail are all more complicated, and when train is advanced, the contact relation of wheel and rail has again very important purposes for passing judgment on the aspects such as the safety in operation of train, the most how to obtain under train travel condition accurately, intuitively wheel-rail contact relationship be people's issue to be resolved always since train is invented.But up to the present, correlation technique can only study Wheel Rail Contact state by indirect means or laboratory method, i.e. obtains result by the means of simulated driving.
There is bigger gap due to experiment condition with time of day by the way of this experiment, therefore the data of gained are bigger with time of day gap.
Summary of the invention
It is an object of the present invention to provide a kind of wheel-rail contact relationship visual detection device, to solve above-mentioned problem.
A kind of wheel-rail contact relationship visible detection method of offer is provided, solves above-mentioned problem with auxiliary.
The embodiment provides a kind of wheel-rail contact relationship visual detection device, arrange including the unit that tests the speed, trigger element, shooting unit, light source, processing unit and label；
Wherein, described light source includes area source；The described unit that tests the speed, described area source, described trigger element and described shooting unit are sequentially distributed along the direct of travel of train；
Described area source is two；Two described area sources lay respectively at the both sides of tested rail；
Described shooting unit is two；Two described shooting unit lay respectively at the both sides of tested rail；And the described shooting unit that is positioned at tested rail side is relative with the described area source being positioned at this tested rail opposite side；
Described label row include being sequentially distributed the multiple labels in detection region along the direct of travel of train；
Described test the speed unit for: detection train travel speed；
Described trigger element is used for: enters detection region time control system shooting unit at tested wheel and starts shooting, leaves detection region time control system shooting unit at tested wheel and stops shooting；
Described shooting unit is used for: travel speed and predetermined shooting quantity according to train calculate shooting speed the Wheel Rail Contact picture according to the tested wheel of train in this shooting speed shot detection region Yu tested rail；
Described light source is used for: irradiating and detecting region；
Described processing unit is used for: correct the picture of shooting unit photographs according to the label in picture and the label parameter that stores in advance, and the picture after the rectification of two same positions acquired in shooting unit is carried out splicing forms wheel rail relation image.
Another embodiment of the present invention provides a kind of wheel-rail contact relationship visible detection method, comprises the following steps:
The travel speed of detection train, and calculate shooting speed according to train running speed and predetermined shooting quantity；
The Wheel Rail Contact picture of tested wheel and the tested rail of train in starting by the shooting speed shot detection region calculated after tested wheel enters detection region；
Shooting is stopped after tested wheel leaves detection region；
According to the label in picture and the label parameter that stores in advance, the picture of shooting unit photographs is corrected；
Picture after the rectification of two acquired same positions is carried out splicing and forms wheel rail relation image.
Above-mentioned the provided wheel-rail contact relationship visual detection device of the present invention and method, tested wheel and the contact relation of rail in the detection region unit photographs that is taken clearly can be made to get off by cooperating between each unit, by the label in picture and the label parameter that stores in advance, picture be corrected afterwards and splice and just can obtain the contact relation of tested wheel and rail under train travel condition.
In the process, in order to ensure that shooting unit can clearly capture the contact relation picture of tested wheel and rail, specially area source is distributed along the direct of travel of train with shooting unit, and will be located in tested rail side shooting unit relative with the area source being positioned at this tested rail opposite side, the most just ensure that shooting unit is in backlight shooting, the profile capturing tested wheel and rail that can become apparent from, thus react its contact situation more intuitively.
Accompanying drawing explanation
Fig. 1 shows the structural representation of the wheel-rail contact relationship visual detection device that the embodiment of the present invention provided.
Reference: 1-tests the speed unit, and 2-shoots unit, 3-area source, 4-opening module, and 5-closes module, 6-reflector, 7-the first point source, 8-second point light source, 9-line source, and 10-label arranges.
Detailed description of the invention
Below by specific embodiment and combine accompanying drawing the present invention is described in further detail.
The embodiment provides a kind of wheel-rail contact relationship visual detection device, as it is shown in figure 1, include test the speed unit 1, trigger element, shooting unit 2, light source, processing unit (not shown) and label row 10；
Wherein, light source includes area source 3；Test the speed unit 1, area source 3, trigger element and shooting unit 2 is sequentially distributed along the direct of travel of train；
Area source 3 is two；Two area sources 3 lay respectively at the both sides of tested rail；
Shooting unit 2 is two；Two shooting unit 2 lay respectively at the both sides of tested rail；And be positioned at tested rail side shooting unit 2 relative with the area source 3 being positioned at this tested rail opposite side；
Label row 10 include being sequentially distributed the multiple labels in detection region along the direct of travel of train；
Test the speed unit 1 for: detection train travel speed；
Trigger element is used for: enters detection region time control system shooting unit 2 at tested wheel and starts shooting, leaves detection region time control system shooting unit 2 at tested wheel and stops shooting；
Shooting unit 2 is used for: travel speed and predetermined shooting quantity according to train calculate shooting speed the Wheel Rail Contact picture according to the tested wheel of train in this shooting speed shot detection region Yu tested rail；
Light source is used for: irradiating and detecting region；
Processing unit is used for: correct the picture of shooting unit 2 shooting according to the label in picture and the label parameter that stores in advance, and the picture after the rectification of two same positions acquired in shooting unit 2 is carried out splicing forms wheel rail relation image.
The wheel-rail contact relationship visual detection device that the above embodiment of the present invention is provided, tested wheel and the contact relation of rail in the detection region unit 2 that is taken clearly can be made to be filmed by cooperating between each unit, by the label in picture and the label parameter that stores in advance, picture be corrected afterwards and splice and just can obtain the contact relation of tested wheel and rail under train travel condition.
In the process, in order to ensure that shooting unit 2 can clearly capture the contact relation picture of tested wheel and rail, specially area source 3 is distributed along the direct of travel of train with shooting unit 2, and will be located in tested rail side shooting unit 2 relative with the area source 3 being positioned at this tested rail opposite side, the most just ensure that shooting unit 2 is in backlight shooting, the profile capturing tested wheel and rail that can become apparent from, thus react its contact situation more intuitively.
Shooting unit 2 can use high-speed camera or other there is the equipment of image-acquisition functions.
Preferably, trigger element can include opening module 4 and close module 5 two parts, lays respectively at the both sides in detection region along the direct of travel of train, opening module 4 and closedown module 5.So can more easily shooting unit 2 be controlled.
In shooting process, owing to the wheel of train is provided with wheel rim, the gap made between wheel rim and rail by arranging area source 3 possibly cannot be irradiated to clearly merely, cause the picture shot can not reflect the contact condition at this clearly, accurately.
In order to avoid above-mentioned situation, can arrange one piece of reflector 6, reflector 6 is positioned at this tested rail side towards another one steel rail；Light source also includes that the first point source 7, the first point source 7 are arranged towards reflector 6, so that its luminous energy sent reflexes to detect in region through reflector 6.The most just can be by luminous reflectance to the gap between wheel rim and rail.Why using point source to be because the energy of point source higher, the profile presented becomes apparent from.
Preferably, light source can also include second point light source 8；Second point light source 8 is positioned at the tested rail side away from another one steel rail.So can further function as light filling effect, make the profile of rail opposite side become apparent from.
In order to make label can clearly indicate out in picture, light source may also include the line source 9 for irradiating described label.
Preferably, described label row 10 and line source 9 can be equipped with in the both sides of described tested rail；The line source 9 being positioned at rail side irradiates the label with its homonymy.Two shooting unit 2 so can be made all can to capture label clearly.
Further, also can be set to by label chequered with black and white, line of engagement light source 9 can improve label readability on picture further.
For the ease of manufacturing and installing, it is also possible to be one piece of marking plate by all label Integrated designs in same label row 10.Thus need not manufacture single marking thing the most respectively, then when installing, the parameter such as distance between label, without adjusting, just can be rest directly upon rail both sides again.
Preferably, opening module 4 and closedown module 5 may each comprise corresponding sensor emission end and sensor receiving terminal.This simple in construction, easy to control, low cost.
Preferably, processing unit can be industrial computer, and its disposal ability is strong, and speed is fast, and efficiency is high, and system stability and safety are the most higher.
An alternative embodiment of the invention provides the wheel-rail contact relationship visible detection method of a kind of wheel-rail contact relationship visual detection device using above-described embodiment to be provided, and comprises the following steps:
S101: the travel speed of detection train, and calculate shooting speed according to train running speed and predetermined shooting quantity；
S102: the Wheel Rail Contact picture of tested wheel and the tested rail of train in starting by the shooting speed shot detection region calculated after tested wheel enters detection region；
S103: stop shooting after tested wheel leaves detection region；
S104: the picture of shooting unit photographs is corrected according to the label in picture and the label parameter that stores in advance；
S105: the picture after the rectification of two acquired same positions is carried out splicing and forms wheel rail relation image.
Just tested wheel and the contact relation of rail under train travel condition can be obtained by said method.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (6)
1. wheel-rail contact relationship visual detection device, it is characterised in that include test the speed unit, trigger element, shooting unit, light source, processing unit and label row；
Wherein, described light source includes area source；The described unit that tests the speed, described area source, described trigger element and described shooting unit are sequentially distributed along the direct of travel of train；
Described area source is two；Two described area sources lay respectively at the both sides of tested rail；
Described shooting unit is two；Two described shooting unit lay respectively at the both sides of tested rail；And the described shooting unit that is positioned at tested rail side is relative with the described area source being positioned at this tested rail opposite side；
Described label row include being sequentially distributed the multiple labels in detection region along the direct of travel of train；Wherein, all labels in same label row are integrally disposed on one piece of marking plate, in order to be arranged on the both sides of tested rail；
Described test the speed unit for: detection train travel speed；
Described trigger element is used for: enters detection region time control system shooting unit at tested wheel and starts shooting, leaves detection region time control system shooting unit at tested wheel and stops shooting；
Described shooting unit is used for: travel speed and predetermined shooting quantity according to train calculate shooting speed the Wheel Rail Contact picture according to the tested wheel of train in this shooting speed shot detection region Yu tested rail；
Described light source is used for: irradiating and detecting region；
Described processing unit is used for: correct the picture of shooting unit photographs according to the label in picture and the label parameter that stores in advance, and the picture after the rectification of two same positions acquired in shooting unit is carried out splicing forms wheel rail relation image；
Described device also includes reflector；Described reflector is positioned at this tested rail side towards another one steel rail；Described light source includes that the first point source, described first point source are arranged towards described reflector, so that its luminous energy sent is in reflector reflexes to tested region；
The both sides of described tested rail are equipped with described label row and line source；The described line source being positioned at rail side irradiates the label with its homonymy；The surface color of described label is chequered with black and white.
Wheel-rail contact relationship visual detection device the most according to claim 1, it is characterised in that described trigger element includes opening module and closes module, lays respectively at the both sides in detection region along the direct of travel of train, described opening module and described closedown module.
Wheel-rail contact relationship visual detection device the most according to claim 1, it is characterised in that described light source also includes second point light source；Described second point light source is positioned at the tested rail side away from another one steel rail.
Wheel-rail contact relationship visual detection device the most according to claim 2, it is characterised in that described opening module and described closedown module all include corresponding sensor emission end and sensor receiving terminal.
Wheel-rail contact relationship visual detection device the most according to claim 1, it is characterised in that described processing unit is industrial computer.
6. the wheel-rail contact relationship visible detection method of use wheel-rail contact relationship visual detection device according to any one of claim 1 to 5, it is characterised in that comprise the following steps:
The travel speed of detection train, and calculate shooting speed according to train running speed and predetermined shooting quantity；
The Wheel Rail Contact picture of tested wheel and the tested rail of train in starting by the shooting speed shot detection region calculated after tested wheel enters detection region；
Shooting is stopped after tested wheel leaves detection region；
According to the label in picture and the label parameter that stores in advance, the picture of shooting unit photographs is corrected；
Picture after the rectification of two acquired same positions is carried out splicing and forms wheel rail relation image；Wherein, all labels in same label row are integrally disposed on one piece of marking plate, in order to be arranged on the both sides of tested rail；
The both sides of described tested rail are equipped with described label row and line source；The described line source being positioned at rail side irradiates the label with its homonymy；The surface color of described label is chequered with black and white.
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| CN105222752B (en) * | 2015-09-29 | 2017-12-26 | 中国民用航空总局第二研究所 | A kind of portable road face detection means and method using structure light |
| CN106828534B (en) * | 2017-03-02 | 2019-07-16 | 西南交通大学 | The device and method of Wheel/Rail Contact Point on rail are detected when train driving |
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| CN102060036A (en) * | 2010-12-14 | 2011-05-18 | 成都主导科技有限责任公司 | System for detecting rapid train wheel pair dynamically |
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| ITVE20000023A1 (en) * | 2000-05-12 | 2001-11-12 | Tecnogamma S A S Di Zanin E & | LASER EQUIPMENT FOR THE CONTROL OF THE RAILWAYS OF A RAILWAY LINE. |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102060036A (en) * | 2010-12-14 | 2011-05-18 | 成都主导科技有限责任公司 | System for detecting rapid train wheel pair dynamically |
Non-Patent Citations (2)
| Title |
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| 轮轨接触几何状态检测装置;肖杰灵等;《中国铁道科学》;20080731;第29卷(第4期);第141-144页、附图2-4 * |
| 高速轮轨接触状态可视化检测装置;刘浩;《中国优秀博硕士学位论文全文数据库(硕士) 工程科技Ⅱ辑》;20060415(第04期);第18-32,59-76页、附图3-10 * |
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