车载显示系统故障分析整改

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【摘  要】本文针对车载显示系统黑屏但主机在后台可以正常播放音乐的问题，对实车显示屏的MCU唤醒信号进行分析，通过采集故障现象下的数据和信号，结合上电时序和反复的压力测试，最终确认是由于唤醒信号异常导致显示屏无法正常显示的问题，并提出优化措施。

【关键词】显示系统；黑屏；唤醒信号；优化

中图分类号：U463.6    文献标志码：A    文章编号：1003-8639（ 2022 ）11-0082-02

Fault Analysis and Rectification of Display System

LI Huan-ling，YE Gang

（Zhejiang Haoqing Car Manufacture Co.，Ltd.，Linhai 317000，China）

【Abstract】Aiming at the problem that the on-board display system has a black screen and the MMI can play music normally in the backstage，this paper analyzes the MCU wake-up signal of the real vehicle display screen. By collecting the data and signals under the fault phenomenon，combined with the power on sequence and repeated pressure test，it is finally confirmed that the problem that the display screen cannot display normally due to the abnormal wake-up signal，and puts forward optimization measures.

【Key words】display system；black screen；wake-up signal；optimization

随着电子产品技术的不断发展，抬头显示以及整车娱乐显示、曲面屏、多连屏等的需求在汽车中的应用越来越广泛[1]。（剩余1242字）