Research and Application of a Rail Transit Metro Vehicle Speed Measurement Platform Scheme
A vehicle speed measurement platform was developed to address the problem of diverse speed sensor models and an excessive number of sensors.This study outlines the overall design principles of the speed measurement platform,informed by an analysis of speed requirements for systems including vehicle traction,braking,signaling,and running gears.The proposed technical scheme advocates for the unification of speed sensors across various vehicle systems and introduces a method for calculating vehicle speed by integrating data from speed sensors and accelerometers.Additionally,it provides a technique for calculating the reference wheel diameter in conjunction with ground responder equipment information.The platform features two flexible methods for transmitting speed information:hardlines and networks.The research findings indicate that,compared to traditional speed measurement methods,this platform offers a unified and more accurate source of vehicle speed information,effectively meeting the requirements of traction,braking,signaling,and running gear systems.
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