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Pantograph carbon contact strip wear recognition method based on improved Canny operator

A pantograph carbon slide and identification method technology, applied in computing, image data processing, instruments, etc., can solve problems such as poor precision and single laser detection function, and achieve the effect of enhancing safety and improving the level of automation

Active Publication Date: 2018-11-16
BEIJING JIAOTONG UNIV
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Problems solved by technology

However, the relative function of laser detection is relatively single, while the accuracy of ultrasonic detection is relatively poor

Method used

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  • Pantograph carbon contact strip wear recognition method based on improved Canny operator
  • Pantograph carbon contact strip wear recognition method based on improved Canny operator
  • Pantograph carbon contact strip wear recognition method based on improved Canny operator

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Embodiment Construction

[0055] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0056] An embodiment of the present invention provides a method for identifying the wear of a pantograph carbon slide plate based on the improved Canny operator, such as figure 1 shown, including:

[0057]S101: Collect the bow head image of the carbon slide plate of the pantograph when the vehicle is running. The carbon slide plate of the pantograph is assembled on the upper surface of the pantograph head, but due to the limitation of the railway, the image acquisition equipment cannot be installed directly above the pant...

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Abstract

The invention discloses a pantograph carbon contact strip wear recognition method based on an improved Canny operator. The method comprises acquiring a pantograph head image of a pantograph carbon contact strip during train operation; performing image normalization image smoothing, and morphological processing on the pantograph head image; performing edge detection, line detection, distortion correction, image cropping, and wear curve fitting on the pantograph head image to recognize the edge wear of the pantograph carbon contact strip; and by using the highest point of the wear curve of the pantograph carbon contact strip as a reference, estimating the actual wear depth of the pantograph carbon contact strip wear curve and determining whether the wear depth exceeds a predetermined threshold. The method can not only meet the maintenance requirements of an actual operating train, but also can be used for a pantograph-contact-system automatic monitoring system, detects the pantograph carbon contact strip wear in real time, improves the automation level of the detection, enhances the safety of the train operation, and has a has great application prospect in the future.

Description

technical field [0001] The invention relates to the field of rail transit vehicle defect detection, in particular to a pantograph carbon slide plate abrasion recognition method based on an improved Canny operator. Background technique [0002] The pantograph-catenary system plays an important role in transmitting electric energy for the train in the current electrified railway, but because it works in a complex aerodynamic and electrical environment, and has a high failure rate, these will seriously affect the safe operation of the train . According to the statistics of relevant railway departments, railway accidents caused by traction power supply system failures accounted for 28.8%, 40.4%, and 29.6% of the total number of accidents in 2008, 2009, and 2010, respectively. Based on this, improving the pantograph-catenary system quality, improving the pantograph-catenary system reliability, and reducing the failure rate of the pantograph-catenary system have become practical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/13G06T5/00G06T3/40G06T5/30G06T3/00
CPCG06T3/4007G06T5/30G06T7/0002G06T7/13G06T2207/20192G06T2207/20024G06T2207/20032G06T3/02G06T5/80G06T5/70
Inventor 魏秀琨李晨亮贾利民魏德华李岩刘玉鑫尹贤贤江思阳杨子明赵利瑞李赛孟鸿飞滕延芹王熙楠李永光崔霆锐
Owner BEIJING JIAOTONG UNIV
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