摘要
随着自动驾驶技术的逐渐成熟,针对L2+辅助驾驶的应用,越来越多的车辆上已经搭载感应式方向盘,用来检测驾驶员手持方向盘的情况。主流的方案大部分是基于人体的电容模型,通过将感应式电容垫子布置在方向盘轮毂上,通过检测手持在方向盘上的电容变化,检测人手是否扶在方向盘上。但是目前电容式传感器技术在EMC抗干扰试验中又非常易出现失效,本文针对主流的离手检测方向盘产品,提出一种EMC传导抗干扰BCI测试的整改研究方法,通过对BCI失效问题的整改和测试,解决电容型离手检测方向盘测试不通过的问题,优化产品性能,改善工程实践中电容式离手检测方向盘的电磁干扰性能差的缺点,已经在多个量产项目中得到验证和应用。
With the gradual maturity of automatic driving technology,for the application of L2+assisted driving,more and more vehicles have been equipped with inductive steering wheels to detect the situation where the driver is holding the steering wheel.Most of the mainstream solutions are based on the capacitive model of the human body.By arranging the inductive capacitive pads on the steering wheel hub,and by detecting the capacitance change of the hand-held steering wheel,it is detected whether the human hand is on the steering wheel.However,the current capacitive sensor technology is in the EMC In the anti-interference test,failures are very prone to occur.This paper proposes a rectification research method for EMC transmission to the anti-interference BCI test for the mainstream steering wheel products with hands-off detection.Through the rectification and test of the BCI failure problem,the capacitance-type The problem of hand-off detection and steering wheel test failure has been solved,and product performance has been optimized.This paper proposes a general solution,which can be used to improve the shortcomings of the poor electromagnetic interference performance of the capacitive hands-off detection steering wheel in engineering practice.
作者
吴凤占
WU Fengzhan(ZF Automotive Technology(Shanghai)Co.,Ltd.,Shanghai 210814,China)
出处
《汽车电器》
2023年第12期79-84,共6页
Auto Electric Parts
