Urban rail transit vehicle-mounted photo-electric speed measurement experimental device

Abstract

The invention discloses an urban rail transit vehicle-mounted photo-electric speed measurement experimental device, and relates to an urban rail transit experimental device. The urban rail transit vehicle-mounted photo-electric speed measurement experimental device comprises a photo-electric speed measurement module, an orthogonal pulse processing module, a main control microprocessor, a power source module, a display module and a vehicle-mounted computer. The output end of the photo-electric speed measurement module is connected with the input end of the main control microprocessor through the orthogonal pulse processing module, the output end of the power source module is connected with the input end of the main control microprocessor, the output end of the main control microprocessor is connected with the input end of the display module, the input / output end of the vehicle-mounted computer is connected with the input / output end of the main control microprocessor through a serial port. The urban rail transit vehicle-mounted photo-electric speed measurement experimental device is small in size, can detect and display speed values in real time, can conduct correction according to the wheel diameter which is actually applied and is applicable to development of an urban rail transit speed measurement experimental system and relevant experiment training courses, is simple and convenient to install, low in cost, high in reliability, high in practicability, simple and convenient to maintain and capable of meeting the requirements of urban rail transit control specialty experiment practical teaching.

Description

technical field [0001] The invention relates to an urban rail transit experimental device, in particular to a vehicle-mounted photoelectric speed measurement experimental device for urban rail transit. Background technique [0002] The existing urban rail transit vehicle-mounted photoelectric speed measurement is to install a rotating grating on the outside of the train wheel, and install a light-emitting device and a photoelectric sensor on both sides of the grating. When the train is running, the rotation of the wheel shaft drives the grating to rotate. With the rotation of the grating, the photoelectric The sensor can receive the "light pulse" signal of the light-emitting device, convert it into an electrical pulse signal and send it to the on-board counter, and the on-board counter will count the pulse signal; by detecting the number of pulse signals, the real-time rotation angle of the wheel can be judged. The displacement of the train can be obtained by the angle of ro...

AI Technical Summary

Problems solved by technology

This technology has the following disadvantages: expensive, complex equipment structure, and large volume, which is not conducive to the design, installation, application and maintenance on the sand table of the urban rail experiment training system, and does not meet the requirements of "enough and applicable" for practical teaching in higher vocational education The principle cannot meet the needs of urban rail transit control professional experimental training teaching

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