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Rail transit train real-time position conversion method, storage medium and system

A technology of real-time location and conversion method, applied in the field of rail transit, can solve the problems of high dependency, installation and maintenance costs, achieve the effect of efficient processing, improve safety, and ensure stable operation

Active Publication Date: 2021-11-30
SHANGHAI FUXIN INTELLIGENT TRANSPORTATION SOLUTIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the Chinese patent application with the application number CN201410668045.6 uses the beacon database and turnout database containing the track number and offset mileage to realize the position representation of rail transit trains. This proprietary rail transit positioning method can realize Efficient positioning of rail transit trains, but this technology relies on accurate beacon devices, and the installation and maintenance costs are high

Method used

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  • Rail transit train real-time position conversion method, storage medium and system
  • Rail transit train real-time position conversion method, storage medium and system
  • Rail transit train real-time position conversion method, storage medium and system

Examples

Experimental program
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no. 1 example ；

[0038] Such as figure 1 As shown, the present invention provides a method for real-time position conversion of rail transit trains, comprising the following steps:

[0039] S1, collect the GNSS position information of the sampling point on the track line, and establish the GNSS database of the track line;

[0040]S2. Establish a proprietary positioning database according to the GNSS database and the track line topology of the rail transit train vehicle positioning system. The proprietary positioning database includes: the GNSS position of the sampling point, the track section number where the sampling point is located, and the track section where the sampling point is located. The offset mileage;

[0041] S3, matching the real-time GNSS position of the train with the sampling points in the proprietary positioning database to obtain matching sampling points, searching the proprietary positioning database to obtain the real-time track section number of the rail transit train th...

no. 2 example ；

[0044] S1, the rail transit train equipped with GNSS system on the track runs at a low speed (for example, the speed is lower than 20KM) from the starting point of the line to the end of the line at a constant speed. The GNSS positioning system performs uniform sampling along the track line at a certain frequency, and the key nodes in the track line Perform multiple sampling, and store the average value of the sampling points at each key node in the track line as the key node sampling data to the database to obtain the GNSS position information of the sampling points. Assuming that the number of key node sampling points stored in the database is n1, the line The total number of sampling points is n; the GNSS position information of n sampling points is stored in the field 1 of the database, and the position information of field 1 includes the longitude and latitude of the sampling points to establish the GNSS database of the track circuit;

[0045] S2. Establish a proprietary p...

no. 3 example ；

[0068] The present invention provides a computer-readable storage medium for the steps in the method for converting a real-time position of a rail transit train according to any one of the above-mentioned first embodiment or second embodiment.

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Abstract

The invention discloses a rail transit train real-time position conversion method, a storage medium and a system. The method comprises the steps: collecting GNSS position information of sampling points, and establishing a GNSS database of a rail line; establishing a special positioning database according to the GNSS database and a rail line topological structure of a rail transit train vehicle-mounted positioning system; and matching the real-time GNSS position of the train with sampling points in a special positioning database to obtain matched sampling points, searching the special positioning database to obtain the serial number of a track section where the rail transit train is located in real time through the sampling points, and calculating the actual offset mileage of the track section where the rail transit train is located according to the position error of the rail transit train. The method does not depend on traditional trackside equipment and vehicle-mounted positioning equipment for positioning, the accurate position information of the rail transit train is provided by the GNSS when the vehicle-mounted equipment breaks down, the positioning precision is not affected by the problems of slipping or idling and the like in the running process of the rail transit train, the robustness and adaptability of a rail transit train system can be improved, and stable operation of the rail transit train positioning system is ensured.

Description

technical field [0001] The invention relates to the field of rail transit, in particular to a real-time position conversion method for rail transit trains. A computer-readable storage medium for executing the steps in the method for converting a real-time position of a rail transit train; and, a real-time position conversion system for a rail transit train. Background technique [0002] In rail transit traffic safety and command system, rail transit train positioning is a key technology. Rail transit train positioning is to use existing technical equipment to accurately grasp key information such as the actual geographic location of rail transit trains on operating lines in real time, and to transmit the location information of rail transit trains to rail transit command and control terminals in real time through transmission media . Rail transit train positioning technology can provide basic data of rail transit train position for rail transit train automatic control tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61L25/02
CPCB61L25/025Y02T10/40
Inventor 朱永辉梁霄袁魁吴莹莹李国龙
Owner SHANGHAI FUXIN INTELLIGENT TRANSPORTATION SOLUTIONS
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