汽车间接视野装置辐射抗扰度试验方法研究

Research on Radiation Immunity Test Method of Vehicle Indirect Vision Devices

阐述了车辆间接视野装置的原理及电磁兼容性要求,介绍一种使用激励光源验证车辆间接视野装置辐射抗扰的试验方法,通过光源的明暗闪烁模拟动态画面改变,描述了摄像机-监视器系统(CMS)的时延试验系统布置及试验原理,并对试验方法的时延误差和抗干扰能力进行验证。同时,研究了激励光源系统对CMS系统试验时延的影响因素,通过试验数据对比验证了试验方法在不同的频率、占空比、亮度、响应时间条件下的影响程度及原因分析。

In this paper,the principle and electromagnetic compatibility requirements of the vehicle indirect vision devices are described,and a radiation immunity verification test method by using an excitation light source which simulate dynamic picture change is introduced.The layout and principles of the time delay test system of the camera-monitor system(CMS)are described,and the measurement error and immunity of the test method are verified.In addition,the influence factors of the excitation light source system on the test delay of the CMS system are studied,the influence degree and reason analysis of the test method under different frequency,duty cycle,brightness and response time are verified by comparing the test data.