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Multi-sensor train positioning method based on edge computing

A multi-sensor, edge computing technology, applied in the direction of railway signal and safety, can solve the problems of difficult and efficient processing of train status information, low stability of positioning accuracy, etc., to ensure safe and efficient driving, improve positioning accuracy, and reduce processing time Delayed effect

Active Publication Date: 2022-04-22
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention provides a multi-sensor train positioning method based on edge computing to solve the problems of difficult timely and efficient processing of train state information, low positioning accuracy and low stability in the existing train control system

Method used

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  • Multi-sensor train positioning method based on edge computing
  • Multi-sensor train positioning method based on edge computing
  • Multi-sensor train positioning method based on edge computing

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Embodiment

[0044] figure 1 It is a schematic flow chart of a multi-sensor train positioning method based on edge computing in this embodiment, refer to figure 1 , the method includes the following steps:

[0045] 1) The on-board processor periodically receives the train dynamic information output by the speed sensor, inertial navigation system and global positioning system as multi-sensor data.

[0046] The on-vehicle processor will also receive the train speed measurement value output by the speed sensor and obtain the current running mileage of the train through cumulative calculation as the current running mileage of the train.

[0047] The speed sensor, inertial navigation system and global positioning system are installed on the vehicle side. The train running process is divided into multiple cycles with equal intervals. In a single cycle, the train is based on the existing positioning technology, and the measured value of the train speed output by the speed sensor is obtained thro...

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Abstract

The invention provides a multi-sensor train positioning method based on edge computing, comprising: the on-board processor receives the train dynamic information output by the speed sensor, the inertial navigation system and the global positioning system at a fixed period, and accumulates the speed value output by the speed sensor Obtain the current running mileage, store the train dynamic information output by the inertial navigation system and the global positioning system, and send a sensor data processing request to the edge server located on the trackside at the end of a single cycle; the edge server determines whether to allow data upload after receiving the request and Feedback the request result to the train; if not allowed, the train will continue to store the data collected in this period and wait for another request in the next period; if allowed, the train will send the data stored in the current period to the edge server; the edge server will After the data processing is completed, the positioning result is sent back to the train, and the train corrects the current train mileage according to the obtained result.

Description

technical field [0001] The invention relates to the technical field of rail transit wireless communication, in particular to a multi-sensor train positioning method based on edge computing. Background technique [0002] The train operation control system monitors and adjusts the operation status of the train by acquiring on-board sensor data and line data, so as to realize the safe and efficient operation of the train. At present, the Chinese Train Control System (CTCS) mainly includes five levels from CTCS-0 to CTCS-4, among which the CTCS-3 train control system is widely used in China's high-speed railways. The CTCS-3 train control system realizes two-way information transmission between the train and the ground equipment based on the train-ground wireless communication system, and uses the wireless block center to realize the generation and issuance of train driving permits. The train needs to achieve its own accurate and reliable positioning during operation, and period...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61L25/02
CPCB61L25/021B61L25/025
Inventor 董海荣宋海锋邓子星汪小勇吕金虎吴兴堂
Owner BEIJING JIAOTONG UNIV
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