电子后视镜延时与ISO标准分析及探讨

Analysis and Discussion on Camera Monitor Systems Latency and ISO Standard

作为汽车视野装置的电子后视镜(CMS)已经被应用,并颠覆了传统物理后视镜的理念,使视觉性能得到明显提升,其中系统延时是其重要技术指标,对于制造企业也提出了全新挑战。文章结合CMS硬件电路和软件图像处理固有特性,阐述了不同系统延时对汽车行驶状况影响,同时分析了CMS延时产生的原因以及解决途径,结果显示,CMS延时的最佳范围为33.33~43.33 ms。

As a vehicle vision device,camera monitor systems(CMS)has been applied and subverted the concept of traditional physical rear-view mirrors,so that visual performance has been significantly improved,among which system delay is an important technical index,and also poses a new challenge to manufacturing enterprises.Combining the inherent characteristics of CMS hardware circuit and software image processing,this paper expounds the influence of different system delays on vehicle driving conditions,at the same time,the causes and solutions of the CMS latency are analyzedstudies.The results show that the optimal range of CMS latency is≤33.33~43.33 ms.