摘要
详细分析当前基于Android系统的车载中控和智能后视镜倒车影像显示系统在系统启动阶段显示慢的问题,如果驾驶员强行倒车可能会带来安全隐患,以及双系统的处理方案成本高,市场接受度不高。通过深入分析车载中控和智能后视镜的Android系统启动流程,提出了一种在U-boot中处理倒车影像显示的解决方案,可以快速处理倒车影像显示,从系统上电到显示倒车画面在2.5s左右完成,非常迅速,也充分考虑了在U-boot过了倒车检测点到内核启动完成具备倒车显示功能时这段盲区的处理方案,充分保障了启动阶段能够快速处理倒车影像显示的功能。该设计不增加硬件成本,经济性好,便于普及。
This paper analyzes in detail the display slow of the current vehicle central control and smart mirror reversing image display system based on Android system in the system start-up phase.If the driver forcibly reverses the vehicle,it may bring security risks,and the cost of the dual system processing scheme is high and the market acceptance is not high.Through in-depth analysis of the start-up process of the Android system of the vehicle central control and smart mirror,a solution for processing the reverse image display in the u-boot is proposed,which can quickly process the reverse image display.From the time when the system is powered on to the time when the display of the reverse image is completed in about 2.5 seconds,it is also fully considered that the reverse image display is available after the reverse detection point in the u-boot and the kernel is started the processing scheme of this blind area period in function fully guarantees the function of fast processing of reverse image display in the start-up stage.This design does not increase the cost of hardware,has good economy and is easy to popularize.
作者
孙德生
SUN De-sheng(Shenzhen Smarter World Technology Co.,Ltd.,Shenzhen 518133,China)
出处
《汽车电器》
2021年第3期48-50,共3页
Auto Electric Parts
