交叉口交通信号控制的半实物仿真平台设计

Design of Semi-physical Simulation Platform for Traffic Signal Control of Crossroads

针对交通信号控制技术与控制算法研究和试验的特殊需要,设计了交通信号控制半实物仿真平台,它由交通信号机原型机和仿真PC机上的仿真软件构成。交通信号机原型机基于RTL inux实时操作系统,运行交通信号控制算法,产生控制信号;仿真软件利用M atlab设计,虚拟交叉口场景,受原型机产生的控制信号的控制,并向原型机提供其控制软件必需的传感器数据,二者通过串口连接实现了硬件在回路中的仿真。

In view of the special needs of research on the traffic signal control technology and algorithm, a semi - physical simulation platform for traffic signal control was designed and developed. It consists of the prototype machine of traffic signal controller and the simulation software running on the simulation PC. The prototype machine is based on the RTLinux real - time operating system, running traffic signal control algorithm, producing the control signal. The simulation software was designed by using Matlab. It provides the virtual intersection scene which is controlled by the control signals produced by prototype machine , and provides the necessary sensor data to the prototype machine. By connecting these two parts through the COM, the platform achieves hardware - in - the - loop simulation. The advantage of this platform is significant in debugging complex intelligent traffic signal control algorithms. It can greatly shorten the cycle of development and the cost of test.