Coupler centering automatic measurement method
An automatic measurement and coupler technology, which is applied to measuring devices, instruments, optical devices, etc., can solve problems such as manual confirmation of couplers, and achieve the effects of improving work efficiency, improving the level of intelligence, and realizing real-time performance
Active Publication Date: 2019-11-19
SHANGHAI AEROSPACE CONTROL TECH INST
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[0003] In order to solve the problem of manually confirming the coupler state in the process of coupler alignment, the present invention proposes an automatic measurement method for coupler alignment, which includes the following process:
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[0042] The invention provides an automatic measurement method for coupler centering based on Hough transformation and feature extraction. First of all, this method establishes a binocular camera measurement system on the front of the vehicle according to the appearance structure of the vehicle front, which is composed of the first measurement camera and the second measurement camera, and pre-calibrates each measurement camera; secondly, the data collected by the first measurement camera Perform correlation feature extraction and Hough transform to obtain real-time intersection angle θ between track and train ΔR ; Again, the relevant feature extraction and Hough transform are carried out on the data collected by the second measurement camera to obtain the real-time pointing angle θ of the coupler relative to the running track ΔT ;Finally, the intersection angle between the track and the train θ ΔR The pointing angle θ of the coupler relative to the running track ΔT Adding to ...
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The invention provides a coupler centering automatic measurement method. According to the method, a binocular camera measuring system is built according to a train head appearance structure; coupler and train real-time information data collected by the binocular camera system are processed on the basis of Hough transformation and feature extraction, so that the real-time intersection angle of a track and a train and the real-time pointing angle of a coupler relative to the track are obtained; and a coupler centering real-time measurement angle is obtained. The binocular camera measuring systemprovided by the invention is simple to construct, convenient to operate, rapid in feedback, capable of remarkably improving the intelligent level of coupler centering in processes such as subway rescue. The processing result of the method has robustness and instantaneity; and the engineering application value of the method is extremely high.
Description
technical field [0001] The invention relates to the technical field of intelligent measurement of rail vehicles, in particular to an automatic measurement method for coupler centering based on Hough transform and feature extraction. Background technique [0002] More and more couplers and buffer devices are used in existing urban rail vehicles in China. At present, the operation of coupler centering is mainly performed manually through manual assistance. However, some rescue scenarios are not suitable for staff to enter. The level of intelligence in the process has become the future development trend. Contents of the invention [0003] In order to solve the problem of manually confirming the coupler state in the process of coupler alignment, the present invention proposes an automatic measurement method for coupler alignment, which includes the following process: [0004] Step 1 establishes a binocular camera measurement system consisting of two identical measurement came...
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IPC IPC(8): G01B11/27
CPCG01B11/272
Inventor 张翰墨陈斌曹姝清田少雄刘鹏飞
Owner SHANGHAI AEROSPACE CONTROL TECH INST