基于FPGA的超声波测距倒车雷达防撞系统设计

Design of Collision Avoidance System for Ultrasonic Ranging and Reversing Radar Based on FPGA

提出一种基于FPGA的超声波测距倒车雷达防撞系统设计方案。采用Altera公司Cyclone Ⅳ E系列的EP4CE6E22C8为核心控制芯片,根据回波检测原理将系统划分为高精度分频器、均值滤波处理和回波信号检测,数值转换,数码管显示及蜂鸣器发声驱动等模块,并使用硬件描述语言Verilog设计实现各功能模块。实验结果表明,利用该方案设计的倒车雷达系统具有较高的距离测量精度,有一定的实用价值。

A design scheme of ultrasonic ranging and reversing radar based on FPGA is proposed.It adopts Altera company Cyclone IV E series EP4CE6E22C8 as the core control chip.According toecho detection principle,the system is divided into several modules:high precision frequency divider,average filtering,echo signal detection,processing and numerical conversion,digital tube display and buzzer sound driver.The function of each module is realized through hardware descriptionVerilog.The experimental results show that the radar system designed with this scheme has higher accuracy of distance measurement and has certain practical value.