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RFID (Radio Frequency Identification Device) technique-based rail transit ground beacon positioning device and train positioning method

A technology for rail transit trains and ground beacons, applied in the field of rail transit ground beacon positioning devices, can solve the problems of unfavorable information update and upgrade, non-standardized communication protocol, non-standardized hardware structure, etc., so as to reduce the amount of communication data and improve reliability. The effect of shortening the R&D cycle

Inactive Publication Date: 2017-09-08
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The ground beacon in the current query response system is a special positioning device designed for the specific application of rail transit, and the following problems exist: 1) non-standardized hardware structure; 2) non-standardized communication protocol; 3) high cost; 4) maintenance work Large volume, not conducive to information update and upgrade

Method used

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  • RFID (Radio Frequency Identification Device) technique-based rail transit ground beacon positioning device and train positioning method
  • RFID (Radio Frequency Identification Device) technique-based rail transit ground beacon positioning device and train positioning method

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Embodiment 1

[0032] Train positioning is a key technology in rail traffic control system. Accurate and real-time acquisition of train position information is the basis of rail traffic control. This embodiment takes the mobile block control of railway transportation as the application background, and researches and develops a rail transit ground beacon positioning device and a train positioning method based on RFID technology. -Satellite positioning-dead reckoning combined train positioning system provides technical support to realize the "small group, high density" driving organization mode of rail transit trains.

[0033] The rail transit ground beacon positioning device designed by the present invention is composed of a ground beacon, a vehicle-mounted beacon read-write terminal, a vehicle-mounted positioning system, and a rail transit train ground monitoring center system. According to the installation specification, the ground beacon is installed on the sleeper in the center of the two...

Embodiment 2

[0050] The ground beacon (RFID tag) in the embodiment of the present invention: Shenzhen Jietong Technology JT-305 ultra-high frequency long anti-metal passive RFID electronic tag is used, which supports EPC Global C1Gen2 and ISO18000-6C protocols, and the working frequency is 860-960MHz; Read and write sensitivity -17dBm, tag chip: AlienH3; 96-bit EPC code, 512-bit user data area. The data storage time is 10 years, and the number of rewritable times: 100,000 times. Reading distance: 5M (with JT-8280 reader).

[0051] In the embodiment of the present invention, the ground beacon reading and writing terminal: adopts Shenzhen Jietong Technology JT-8280A ultra-high frequency RFID reader, supports ISO18000-6C (EPC G2) protocol, operating frequency 902-928MHz, communication interface Wiegand26\34\ 42. RJ45, RS232 data interface, stable working distance 5M. Power requirements DC-7.5-12V, 3A.

[0052] The wireless communication interface between the on-board positioning system and ...

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PUM

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Abstract

The invention discloses an RFID (Radio Frequency Identification Device) technique-based rail transit ground beacon positioning device and a train positioning method. The device comprises a ground beacon, a vehicle positioning system and a rail transit train ground monitoring center system, wherein the vehicle positioning system comprises a vehicle positioning host and a ground beacon reading and writing terminal; the ground beacon is an RFID electronic tag with an only EPC (Electronic Product Code) and is arranged on a railroad tie at the center of two steel rails of a train track; the ground beacon reading and writing terminal is arranged in a corresponding position at the bottom of a train and connected to the vehicle positioning host of the vehicle positioning system through a wire; and the vehicle positioning system is capable of exchanging information with the rail transit train ground monitoring center system through a wireless communication channel of rail transit. The device disclosed by the invention has the advantages that the design, manufacturing, installation and maintenance processes of the rail transit ground beacon are simplified, and the real-time performance and safety of the vehicle positioning system are increased.

Description

technical field [0001] The invention relates to the technical field of rail transit train positioning and control, in particular to a rail transit ground beacon positioning device and a train positioning method based on RFID (Radio Frequency Identification) technology. Background technique [0002] Train positioning is a key technology in the rail traffic control system. Accurate and real-time acquisition of train position information is the basis of the rail traffic control system. Train positioning based on query / transponder is a positioning method widely used in rail transit at present. The query transponder system consists of three main parts: ground beacon, vehicle tracker, and vehicle tracker host. Based on the embedded system, it uses digital technology to complete the sending, receiving and processing of data, and transmits the processed information to the locomotive radio station or on-board ATP for train number transmission or train operation control. [0003] Th...

Claims

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Application Information

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IPC IPC(8): B61L25/02
CPCB61L25/025B61L25/028
Inventor 王博
Owner JINAN UNIVERSITY
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