Tramcar level crossing signal priority control system based on PLC

Abstract

The invention discloses a tramcar level crossing signal priority control system based on a PLC, and the system comprises the PLC, a detection unit, a traffic light controller and a tramcar signal lamp, wherein the detection unit, the traffic light controller and the tramcar signal lamp are connected with the PLC. The detection unit detects the position, speed and priority of a tramcar, and transmits the position, speed and priority information of the tramcar to the PLC. The PLC calculates the priority request time according to the position and speed information, and sends a priority request matched with the priority in the priority request time to the traffic light controller. The traffic light controller judges the priority pass mode of the tramcar according to the level of the priority and the traffic conditions, and adjusts the signal phase timing plan of road traffic lights while returning a judgment result to the PLC. The PLC controls the display of the tramcar signal lamp according to the priority pass mode of the tramcar. Therefore, the tramcar level crossing signal priority scheme is optimized.

Description

technical field [0001] The invention relates to the field of traffic information control. Background technique [0002] As a medium-capacity public transport, modern trams generally operate on dedicated lanes and enjoy space priority. However, there is a right-of-way conflict between trams and other social vehicles at public transport level crossings. In order to ensure the efficiency of tram traffic, it is necessary to design an effective control method for the priority right of way at tram level crossings to improve the punctuality and reliability of operation. [0003] However, the existing tram level crossing signal controllers are usually special equipment for each signal manufacturer, and its I / O quantity and communication interface capabilities are limited and lack flexibility. Contents of the invention [0004] The object of the present invention is to provide a kind of tram level crossing signal priority control system based on PLC (programmable logic controller...

AI Technical Summary

Problems solved by technology

[0003] However, the existing tram level crossing signal controllers are usually special equipment for each signal manufacturer, and its I / O quantity and communication interface capabilities are limited and lack flexibility.

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