Vision measurement technology-based catenary geometric parameter measurement instrument and detection method

Abstract

The invention discloses a vision measurement technology-based catenary geometric parameter measurement instrument and a detection method. The measurement instrument comprises a measurement trolley, wherein a baseline connected with the measurement trolley is horizontally arranged on the measurement trolley; a camera for acquiring the information of a catenary is arranged at each of the two ends of the baseline, and is connected with the baseline; a vertical rod connected with the measurement trolley is perpendicularly arranged on the measurement trolley; an angle-adjustable industrial computer for being communicated with the cameras is arranged at the top of the vertical rod. According to the measurement instrument and the detection method, the precision measurement instrument which can be used in field is developed based on a precision mechanical design in combination with the requirements of an industrial field environment by taking computer vision measurement as a core; massive data acquired in field is analyzed to construct a railway catenary state model to deeply and precisely measure the state of the catenary so as to form a driving safety early-warning system of a catenary system.

Description

technical field [0001] The invention discloses a visual measurement technology-based measuring instrument and a detection method for geometric parameters of a railway catenary. Background technique [0002] Many foreign advanced surveying and mapping instruments are used in my country's railway infrastructure construction, most of which are total stations. However, in the three-dimensional space of the railway catenary, general-purpose surveying and mapping instruments are no longer applicable, and it is impossible to organically combine the state changes of the track with the surveying and mapping work, so the measurement of the track and the catenary needs special instruments to complete. The position and condition of the catenary space directly determines the flow quality of the electric locomotive, and ultimately affects the running speed and safety of the train. According to statistical analysis, 70% of railway accidents are caused by poor catenary status. The electric...

AI Technical Summary

Problems solved by technology

[0004] In recent years, domestic universities and scientific research institutions are also doing research on vehicle-mounted visual measurement methods, that is, cameras (or monocular or binocular, or visible light or infrared) are placed on the roof of inspection vehicles, work vehicles or locomotives to take pictures of the catenary. Detect catenary parameters, but because they cannot overcome the bumps, shocks and vibrations of locomotives, the measurement results have large errors, and the data are only used as references and cannot be reliable measurement data. Such equipment is not convenient for catenary construction and emergency repairs.

In addition, my country's high-speed railway has taken the lead in the world, and the required measurement accuracy is also the highest. At present, there is no precision measurement trolley suitable for daily maintenance at home and abroad.

Images