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Stationary train positioning method suitable for cbtc system

A train positioning and train technology, applied in the direction of railway signal and safety, can solve the problems that cannot meet the general and fast requirements, cannot adapt to the fully automatic driving environment, etc.

Inactive Publication Date: 2015-08-05
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these two methods can realize the positioning of stationary trains, they also have limitations. They cannot meet the general and fast requirements, and cannot adapt to the future efficient fully automatic driving environment.

Method used

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  • Stationary train positioning method suitable for cbtc system
  • Stationary train positioning method suitable for cbtc system
  • Stationary train positioning method suitable for cbtc system

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Embodiment Construction

[0025] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0026] The CBTC system uses wireless communication technology to realize continuous communication between the train and the ground control system, ensuring that the train can run in a highly efficient mobile block mode. The communication between the train and the ground requires seamless coverage. Usually, multiple wireless base stations / APs (Access Points) are set up along the track, so that the train can establish communication with the base station at any position. In order to ensure the reliability of vehicle-to-ground communication, two mobile stations are generally installed on the vehicle, located at both ends of the vehicle. The invention utilizes the wireless information to realize the positioning of the stat...

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Abstract

The invention discloses a static train positioning system suitable for a CBTC system and belongs to the technical field of automatic train protection. The method utilizes the wireless environment of the CBTC system to build a relational database of field intensity characteristics and track position through tracking, correcting and fusing based on wireless base station distribution, track maps, train geometric information, base station parameters and signal intensity both received by the vehicle-mounted radio station, and the like; and the quick and accurate positioning of the static train can be realized through matching the relational database with the field intensity information received by the train. The method can simplify the initial positioning process of the train to improves the positioning efficiency, and is suitable for full-automatic train driving operation environment.

Description

technical field [0001] The invention belongs to the technical field of train safety protection, and in particular relates to a stationary train positioning method suitable for a CBTC system. Background technique [0002] The efficient and safe operation of modern trains depends on advanced train protection technologies such as ATP (Automatic Train Protection), and the position of the train is an important basis for various protection decisions, so it is very important for the safe operation of the train. [0003] Currently applied train positioning has the following methods: track circuit, axle counting, GPS and sensors combined with beacon (transponder) methods. The track circuit method can locate the moving train and the stationary train, but its positioning accuracy is low, and the resolution is usually a track circuit section; the axle counting method detects the train position by counting the wheels of the train passing the position of the axle counting, This method ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61L25/02
Inventor 于振宇唐涛郜春海
Owner BEIJING JIAOTONG UNIV
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