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将Ⅳ+SEP4020微处理器通过采集数据并驱动TFT显示屏实现汽车虚拟仪表是文中的主要内容。该文首先阐述了系统的总体设计方案,并详细说明汽车仪表的数据采集电路,CAN总线接口设计,LCD液晶显示器接口设计,作为软件开发平台的μc/OS-Ⅱ操作系统和μc/GUI图形系统应用,最后在LCD上得到良好的人机交互界面。该设计简单,易于实现,简化了仪表结构,实现网络化集中控制,而且提高了可靠性、安全性以及产品的通用性。
The IV + SEP4020 microprocessor through the acquisition of data and drive TFT display to achieve automotive virtual instrument is the main content of the article. This paper first describes the overall design of the system and details the data acquisition circuit, CAN bus interface design, LCD liquid crystal display interface design, as the software development platform μc / OS-Ⅱ operating system and μc / GUI graphics system Application, and finally get a good man-machine interface on the LCD. The design is simple, easy to implement, simplifies the instrument structure, to achieve centralized network control, but also improves the reliability, safety and product versatility.