机构地区: 江西理工大学机电工程学院
出 处: 《兵工自动化》 2007年第7期63-63,69,共2页
摘 要: 基于DSP的毫米波汽车防撞雷达系统,采用主从处理器设计。从处理器AT89C51完成人机交互、显示和控制报警。键盘设置的运行参数及其报警门限通过LCD中文显示。当主处理器DSP运算得到的目标信号超过设定门限值时,通过AT89C51控制启动声光报警。采样的中频时域信号通过傅立叶FFT变换将其从时域变换到频域,并获得频率参数。 A new design with master-slave processor is adopted in the system of millimeter wave automotive anti-collusion radar based on DSP. The slave processor AT89C51 realizes man-machine interactive function, display and alarming control. The sound and light alarming unit is controlled by AT89C51 when the distance obtained by master processor DSP exceeds the threshold. The signal in time domain is transformed into frequency domain through fast Fourier transform (FFT), and the result can be obtained from sampling.