FPGA设计的太阳能交通信号灯控制器

现在大多数太阳能交通信号灯控制器采用单片机设计,交通信号灯主控制器和从控制器采用无线传输的方式传输数据,但是经过交叉路口的车辆所带来的电子干扰会对无线传输线路带来一些影响.本文完全采用FPGA设计交通信号灯从控制器,主控制器与从控制器采用有线传输,接口电路使用FPGA和CAN传输线实现.采用FPGA实现的从控制器实质上相当于一个纯硬件电路的设计,传输接口采用CAN传输线,具有非常强的抗干扰性.最后仿真、制板、测试,实现了主控制器与从控制器之间的稳定传输.

Solar Traffic Signal Lamp Controller Based on FPGA

Now most of solar traffic signal lamp controller uses the microcontroller ,and the wireless communication is used to transfer the data between the master controller and the slaver controller of traffic signal light ,but the electronic interference caused by the intersec-tion of the vehicle will bring some impact on the wireless transmission line .FPGA is used to design the slaver controller of the traffic sig-nal lamp ,and the master slaver controller communicates with the slaver controller through the wired transmission .The circuit of commu-nication interface is realized by using FPGA and CAN transmission line .The slaver controller is essentially equivalent to a pure hardware circuit design ,the CAN transmission line is used as the transmission interface ,w hich has very strong anti-interference .Finally ,the simu-lation results show that the master controller and the slaver controller can transfer the data stably .