电动汽车液晶数字仪表的设计

摘要

The design of LCD digital instrumentation for electric vehicles is introduced in this paper. Its hardware uses S3C2440A with a core of ARM920T as master control IC and its software is based on jxC/OS- II operating system and μC/GUI graphic display interface with animation display for meter pointer and SAE J1939 protocol implemented. The results of real vehicle test on a LCD digital instrument designed for an electric vehicle manufacturer show that the LCD digital instrument can meet the practical use requirements of electric vehicles and is more humanized than conventional one.%本文中介绍电动汽车液晶数字仪表的设计.其硬件采用以ARM920T为内核的S3C2440A作为主控芯片,软件采用μC/OS-Ⅱ操作系统和μC/GUI图形显示界面,并实现指针动画显示和J1939协议.为某电动汽车厂家设计的液晶仪表的实车测试结果表明,液晶汽车数字仪表可满足实际的使用需求,比常规仪表更人性化.