多媒体显示系统链路硬件性能探究及系统故障分析方法

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【摘  要】此文主要介绍常规多媒体显示硬件链路组成、原理，基于硬件链路插入损耗、回波损耗等高频性能分析为出发点，模拟不同硬件异常与故障的关系，建立故障模型，介绍不同的排查方法，便于快速锁定多媒体显示故障。同时介绍某车型实际问题的排查过程，便于更好地理解运用。

【关键词】Fakra；HSD；高频特性；频率；插入损耗；显示系统；故障模型

中图分类号：U463.6    文献标志码：A    文章编号：1003-8639（ 2022 ）12-0047-04

Research on Link Hardware Performance and System Failure Analysis Method of Multimedia Display System

LUO Ming，LU Yun，XIA Ming-chun，SHI Hong-wei，LUAN Ji-zhe，YAN Peng，ZHANG Le，DING Gang

（Geely Automotive Research Institute（Ningbo）Co.，Ltd.，Cixi 315315，China）

【Abstract】This article mainly introducesthe composition and principle of conventional multimedia display hardware links. Based on the analysis of high-frequency performance such as hardware link insertion loss and return loss as the starting point，it simulates the relationship between different hardware anomalies and faults，establishes fault models，and introduces different troubleshooting methods，so as to quickly lock the multimedia display faults. At the same time，the investigation process of the actual problems of a vehicle is introduced to facilitate better understanding and application.

【Key words】Fakra；HSD；high-frequency characteristics；frequency；insertion loss；display system；troubleshooting model

新四化背景下，智能座舱、智能驾驶等技术趋于常态化运用，未来汽车甚至会与家电、公共基础设施实现万物互联。（剩余4205字）