电动汽车全液晶仪表系统的硬件设计

摘要

Aiming at shortcomings of traditional mechanical instruments in the new energy electric vehicles applications, a hardware system solution of full LCD instrument is designed. The system uses Fujitsu's MB91F522K as the main chip to collect and process vehicle CAN bus signal and level signal, and select Freescale's i.MX6Quad chip as a graphics display processor. Then use LCD to display electric vehicle speed, revolving speed, motor and battery group status, alerts information and so on. Experiments show that the instrument system can accurately visualize complex operating parameters of electric vehicles.%针对传统机械仪表在新能源电动汽车应用上的不足,设计了一种全液晶仪表的硬件系统方案.该系统采用富士通公司的MB91F522K作为主控芯片采集并处理汽车CAN总线信号和电平信号,选取Freescale公司的i.MX6Quad芯片作为图形显示处理器,通过LCD显示电动汽车的车速、转速、电机和电池组状态、警示等信息.实验表明该仪表系统能准确直观地显示电动汽车的复杂运行参数.