具备调频功能的超声波雷达在自动驾驶中的技术研究  

Research on Ultrasonic Sensor With Frequency Modulation Function in Autopilot

作　　者：王志兵 WANG Zhi-bing(R&D Dept.II,TUNG THIH Electron(Xiamen)Co.,LTD,Xiamen 3631006,China)

机构地区：[1]同致电子科技(厦门)有限公司,厦门361006

出　　处：《汽车科技》2022年第4期75-79,共5页Auto Sci-Tech

摘　　要：近几年随着汽车自动化层度越来越高,对于各种传感器的性能要求也越来越高。特别是自动驾驶级别达到L3及以上的车辆,基本上要求主要传感器在功能安全方面至少能够达到ASILA。传统的超声波雷达在稳定性、可靠性、功能安全等方面都无法满足其要求。而新一代具备调频功能的超声波雷达不仅提高了稳定性、可靠性,还可以自动诊断自身故障、动态调整发波频率、自动识别回波频率等。本文就具备调频功能的超声波雷达在自动驾驶中的运用展开深层次的论述。In recent years,with the increasing level of automotive automation,the.performance requirements of various sensors are becoming higher and higher.In particular,for vehicles with an autonomous driving level of L3 and above,the primary sensors are required to be at least ASIL A in terms of functional safety.The traditional ultrasonic sensor can not meet its requirements in stability,reliability and functional safety.The new generation of ultrasonic sensor with frequency modulation function not only improves the stability and reliability,but also can automatically diagnose their own faults,dynamically adjust the wave frequency,automatically identify the echo frequency and so on.This paper discusses the application of ultrasonic sensor with frequency modulation function in autopilot.

关 键 词：自动驾驶 超声波雷达 余弦定理 调频 扫频 

分 类 号：U469.79[机械工程—车辆工程]