Ultra-high-speed maglev train positioning and speed measuring system based on Manchester encoding

Abstract

An ultra-high-speed maglev train positioning and speed measuring system based on Manchester encoding comprises a train body, a laser light source, a beam splitter, an emitting light source plate, a receiving lens module, a networking processing system and a traction operation control system. The laser light source, the beam splitter and the emitting light source plate are mounted at the top of the head body of the ultra-high-speed maglev train, and the receiving lens modules are mounted on the inner pipe wall of a pipeline at equal intervals; an optical transmitting lens is mounted on the transmitting light source plate, and an optical receiving lens is mounted on the receiving lens module; continuous optical signals output by the laser light source form linear light at the end of the emitting light source plate through the beam splitter, the receiving lens module receives coded laser signals and transmits the coded laser signals to the networking processing system far away from the pipeline along with movement of the ultra-high-speed maglev train body, and the networking processing system processes the coded laser signals. And the networking processing system converts the received coding laser signal into an electric signal and outputs and transmits the information to the traction operation control system, and the coding laser signal is Manchester coding.

Description

technical field [0001] The invention relates to the field of positioning and speed measurement of ultra-high-speed magnetic levitation trains, in particular to the optical positioning and speed measurement technology of ultra-high-speed magnetic levitation trains. Background technique [0002] Ultra-high-speed maglev trains refer to trains with a maximum speed of more than 1000km / h, and can even reach 4000km / h. Information such as mileage and speed are important technical indicators to measure the quality of ultra-high-speed maglev trains and ensure real-time and reliable control of ultra-high-speed maglev trains. . [0003] Among them, the positioning and speed measurement system can provide accurate and high-resolution rotor phase, absolute position, speed and other information necessary for the ultra-high-speed maglev train traction, operation control and other systems in real time. Traditional high-speed maglev trains generally use cross-inductive loops arranged along g...

AI Technical Summary

Problems solved by technology

However, the position measurement accuracy of the cross-induction loop is generally only up to 3cm. At the same time, the strong electromagnetic interference generated by the drive of the ultra-high-speed maglev train will seriously affect the performance of the cross-induction loop sensor. Obtain highly reliable rotor phase, absolute position, and speed information

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