Maglev train, speed measuring and positioning method and system, track and metal tooth groove plate
A technology for maglev trains and positioning methods, which is applied in the direction of railway signals and safety, and can solve problems such as inability to locate trains, and achieve the effects of improving system reliability, meeting accurate benchmarking, and low cost
Pending Publication Date: 2021-11-09
ZHUZHOU ELECTRIC LOCOMOTIVE CO
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Problems solved by technology
However, in this patent document, the widths of the teeth in all cogging periods are equal, and the widths of the slots in all cogging periods are equal. It is possible to judge the speed and direction of the maglev train at low and medium speeds, but it cannot locate the train.
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[0026] Such as figure 1 As shown, the maglev train in an embodiment of the present invention is provided with a positioning and speed measuring system. In order to ensure system redundancy, the positioning and speed measuring system includes a set of sensors 2 respectively arranged at the front end and the rear end of the car body 1, each set The sensors 2 include one sensor 2 respectively arranged on the left side and the right side under the vehicle body 1 , and each sensor 2 is connected with a processing unit 5 .
[0027] Such as figure 1 As shown, the positioning and speed measurement system also includes a metal alveolar plate 3, which is arranged along the direction in which the track 4 is laid, and the sensing surface of the sensor 2 faces the metal alveolar plate 3 and Parallel to the laying surface of the track 4 . The periodic on-off signal generated when the sensor 2 approaches the metal alveolar plate 3, that is, a square wave, is transmitted to the processing u...
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The invention discloses a maglev train, a speed measuring and positioning method and a system thereof, a track and a metal tooth groove plate, and relates to the technical field of maglev trains. Different metal tooth groove plates are arranged on the track, the track can adapt to sleepers, installation is convenient, cost is low, at least one sensor is arranged on the vehicle body, redundant configuration is achieved, system reliability is improved, the distance between the fourth coil and the first coil in the track direction is 2.5 times of the third width, the output phase difference of the fourth coil and the first coil is 90 degrees. The direction judgment is carried out. According to the speed measuring and positioning method, periodic on-off signals are output to form square waves when the sensor passes through the metal tooth groove plate, and the absolute position of the train and the speed of the train can be obtained. The speed measuring and positioning method is free of contact and mechanical abrasion, is less affected by weather, and can meet the requirement for accurate benchmarking of automatic driving of the train.
Description
technical field [0001] The invention relates to the technical field of speed measurement and positioning of maglev trains, in particular to a maglev train, a speed measurement and positioning method and system, and a metal alveolar plate. Background technique [0002] The speed measurement and positioning system is an important part of the operation control of medium and low speed maglev trains. At present, the main methods used in the research of medium and low speed maglev trains at home and abroad include the induction loop method and the sleeper counting method. The induction loop speed measurement and positioning method uses the electromagnetic induction of the induction loop laid on the track and the vehicle antenna coil for positioning. The positioning accuracy is limited by the wiring of the induction loop, usually on the order of centimeters, and the cost is high. The sleeper counting method uses sensors to count the passing sleepers to achieve the purpose of posit...
Claims
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Login to View More IPC IPC(8): B61L25/02
CPCB61L25/021B61L25/025B61L25/023
Inventor 佟来生宋丽伟张文跃陈启发罗华军张文会
Owner ZHUZHOU ELECTRIC LOCOMOTIVE CO