车载超声波雷达回波模拟器设计

Design of Sensor-in-Loop Automatic Parking Simulation Test System

针对基于超声波雷达的自动泊车功能,在较高装车量情况下仍存在功能使用率低、用户体验差的问题,基于超声波雷达探测原理分析研发了一种车载超声波雷达物理回波模拟设备架构,通过设计超声波发射驱动与接收处理电路、回波模拟控制系统,基于NI-FPGA板卡完成了车载超声波雷达回波模拟器样机开发。在NI-PXI平台智能驾驶虚拟仿真测试系统基础上集成超声波雷达模拟器,搭建面向APA自动泊车功能的传感器在环实验室仿真测试系统,通过实验结果验证了设计方案的可行性,可应用于自动泊车控制算法的研发调试与测试验证阶段。

Aiming at the problems of low function utilization rate and poor user experience of automatic parking function based on ultrasonic radar in the case of high vehicle installation rate,a physical echo simulation equipment architecture of vehicle-borne ultrasonic radar is developed based on the analysis of ultrasonic radar detection principle. Through the design of ultrasonic transmitting drive and receiving processing circuit and echo simulation control system,the prototype development of vehicle-borne ultrasonic radar echo simulator is completed based on NI-FPGA board. Based on the NI-PXI platform intelligent driving virtual simulation test system,the ultrasonic radar simulator is integrated to build the sensor-in-loop laboratory simulation test system for APA automatic parking function. The feasibility of the design scheme is verified by the experimental results,which can be applied to the development,debugging and test verification stage of automatic parking control algorithm.