Modern tram intersection signal control pre-warning method and pre-warning system

A tram and signal control technology, applied in the direction of railway signal and safety, using vehicles to manipulate signals, railway signals, etc., can solve problems such as high construction costs, achieve accurate information transmission, improve timeliness and continuity , the effect of small amount of calculation

Inactive Publication Date: 2014-12-24
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0003] At present, trams in some areas of the country bypass the intersection by opening special roads or building elevated roads at the intersection, and adopt the method of space separation to avoid conflicts. This is the safest method, but the construction cost is huge. For example, the domestic The trams built in Hunnan New District solve the problem of trams passing through intersections in this way
In addition, trams in some foreign regions adopt the method of joint control with intersection signals, specifically, through the control of the tram management center to determine the posit

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  • Modern tram intersection signal control pre-warning method and pre-warning system
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  • Modern tram intersection signal control pre-warning method and pre-warning system

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[0038] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0039] Such as figure 1 Shown, according to a preferred embodiment of the present invention, a kind of modern streetcar crossing signal control early warning method, its realization comprises the following steps:

[0040] Step 1. Update the running information of the tram based on the RFID device installed at the fixed position: read the RFID electronic tag of the tram through the RFID reader installed at the fixed position to update the running information of the tram, wherein the RFID electronic tag is installed At the head and tail of the tram, the RFID reader is fixedly installed next to the tram track;

[0041] Step 2. Based on the time t of the RFID electronic tag on the head of the tram collected in step 1 through the RFID reader i1 , The time t for the RFID electronic tag at the rear of t...

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Abstract

The invention provides a modern tram intersection signal control pre-warning method, which comprises the following steps: based on an RFID (Radio Frequency Identification Device) arranged in a fixed position, updating tram running information; based on the time for RFID electronic tags at the head and the tail of a tram to pass through an RFID reader-writer and the tram body length information, calculating the average speed information of the tram; based on the average speed information and a distance Si between the current RFID reader-writer arranged beside a track and the downstream adjacent intersection, calculating estimated time for the tram to arrive at the downstream adjacent intersection; according to the geometric type of the downstream adjacent intersection, obtaining clearance time and safety reserved time of the downstream intersection; based on the steps, calculating the estimated time for the tram to arrive at the downstream adjacent intersection and the sum of the clearance time and the safety reserved time of the downstream adjacent intersection, and judging whether the risk of conflict exists or not. The invention also relates to a modern tram intersection signal control pre-warning system.

Description

technical field [0001] The present invention relates to the technical field of modern rail train operation early warning, in particular to a modern tramway intersection signal control early warning method and early warning system Background technique [0002] Modern trams are rail trains designed with intelligent rail transit technology. They belong to a new generation of conventional public transportation. They have the characteristics of fast running speed, low environmental pollution, low construction cost, and good appearance. It does not need to establish a completely independent right of way, and can be mixed with ordinary ground traffic. On the one hand, it reduces the shortage of land resources, but at the same time it brings potential safety hazards. In particular, at some intersections, trams need priority right of way, which will inevitably affect other traffic flows at the intersection, and even cause traffic conflicts and road traffic accidents. Therefore, the ...

Claims

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Application Information

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IPC IPC(8): B61L5/18B61L5/20B61L13/00B61L23/00B61L29/30
Inventor 高宁波胡启洲郑丽媛刘琛刘倩茜吴鹏诸云
Owner NANJING UNIV OF SCI & TECH
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