Communication decoupling method for urban traffic signal control system

Abstract

The invention discloses a communication decoupling method for an urban traffic signal control system, which comprises the following steps of: (1) setting the communication link between the traffic signal control system and a signal machine into a communication mode of '' a central system, a central system data gateway, a communication network, a local data gateway and an intersection signal machine''; and (2) based on a protocol of the traffic signal control system, decomposing application layer data and increasing an SID (service ID) data packet to form an SID data packet-based special traffic signal control system network communication protocol, wherein the SID data packet performs unique service coding and packing on the instructions transmitted by the central system and the data uploaded by the signal machine, and the coding position is in front of the application data of the traffic system. The communication decoupling method for the urban traffic signal control system can implement remote control on different intersection traffic signal machines.

Description

technical field [0001] The invention relates to an urban traffic signal control system, in particular to a communication decoupling method for the urban traffic signal control system. Background technique [0002] In the practice of traffic management in many cities in my country, a variety of intersection traffic signals that implement different communication protocol standards are used. Typical examples include Siemens ST200\ST800\MCU signals, ATC2070 signals, and Hisense HSC signals in Beijing. The coexistence of these traffic signals implementing different communication protocols has brought a lot of inconvenience to the coordinated control of networked traffic signals. Although traffic signal control systems such as SCOOT and SCATS widely used at home and abroad have good regional signal control capabilities, they can only control certain signal models, which greatly limits the application range and control capabilities of traffic signal control systems. The main reaso...

AI Technical Summary

Problems solved by technology

The coexistence of these traffic signals that implement different communication protocols has brought a lot of inconvenience to the coordinated control of networked traffic signals

Although traffic signal control systems such as SCOOT and SCATS widely used at home and abroad have good regional signal control capabilities, they can only control certain signal models, which greatly limits the application range and control capabilities of traffic signal control systems.

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