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

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 ...

AI Technical Summary

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 position of the tram according to the power supply interval of the tram, and then judge the track When the tram passes the intersection, control the signal at the intersection, so that when the tram passes the intersection, the priority of modern trams can be realized. For example, Siemens, Huawei, etc. are currently engaged in research work in this area. These The technology has been tried to use in some western countries, but there are some problems. At present, there is no perfect solution to solve the signal control problem of tram intersections from the aspect of signal control technology.

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