Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of urban rail transit cbtc vehicle ground wireless communication signal coverage method

A technology of vehicle-to-ground wireless communication and urban rail transit, which is applied in wireless communication, signal indicators on vehicles, railway signals, etc., to achieve the effect of avoiding mutual interference

Active Publication Date: 2018-05-04
SHANGHAI HORIZON INFORMATION TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to propose a kind of urban rail transit CBTC train-ground wireless communication signal coverage method for the deficiencies of the vehicle-ground wireless subsystem of the existing urban rail transit CBTC train signal system, to solve existing problems and avoid risks , enhance and improve the reliability, availability and maintainability of the CBTC vehicle-ground wireless subsystem, and better guarantee driving safety

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The invention is a CBTC vehicle-to-ground wireless coverage method that adopts leaky cables and intelligent antenna mixed networking in the driving section. The combination of leaky cable and smart antenna is used to replace the traditional radio frequency antenna or leaky waveguide to complete the radio wave propagation and signal coverage of the urban rail transit CBTC vehicle-to-ground wireless system.

[0035] (1) Selection of frequency resources and technical standards

[0036] According to the Ministry of Industry and Information Technology No. 2012 [52] document, rail transit CBTC train-to-ground wireless is an "industry private network service" (refer to Article 1 of the Ministry of Industry and Information Technology No. 2012 [52] document), and subway companies can apply to the radio management department 406.5-409.5MHz frequency resources, and configure equipment according to YD / T2115-2010 and YD / T2117-2010 standards (refer to Article 3 of the Ministry of Ind...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an urban rail transit CBTC train-to-ground wireless communication signal coverage method. The method adopts the combination of a leaky cable and an intelligent antenna to realize the train-to-ground wireless communication signal coverage of the urban rail transit CBTC train signal system. It overcomes the shortcomings of traditional 802.11x series technologies and the use of radio frequency antennas or leaky waveguides for signal coverage. The invention basically realizes that there is no need to lay active equipment in the track interval, and the base station signals of adjacent stations are overlapped and covered in the interval, so as to ensure that the CBTC of the entire line is guaranteed after the communication signal equipment of a station fails due to power failure or other reasons. The vehicle-to-ground communication of the system can continue to be maintained, greatly improving the reliability, availability and maintainability of the system, and providing guarantee for the safe operation of subway trains.

Description

technical field [0001] The invention relates to the technical field of wireless signal transmission, in particular to a method for covering CBTC vehicle-to-ground wireless communication signals in urban rail transit. Background technique [0002] CBTC (Communication Based Train Control System) is an automatic train control system based on wireless communication. It uses advanced communication and computer technology to continuously control and monitor train operation. It is used to replace the traditional train signal system based on track circuits to achieve train operation control. [0003] Since CBTC was introduced into my country in 2004, all new urban rail transit lines in my country have adopted CBTC technology, and the vehicle-to-ground wireless communication system has adopted the 802.11X series wireless broadband technology in the 2.4GHz ISM frequency band. There are two wireless signal coverage methods: one is to use Ordinary radio frequency antennas complete the si...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/26H04B5/00
CPCH04W16/26B61L15/0027B61L27/20
Inventor 张军
Owner SHANGHAI HORIZON INFORMATION TECH