摘要
本文介绍了汽车行驶过程中速度参数的测量原理,建立了相关数学模型。并设计了采用以嵌入式微处理器MC9S12DP256B为核心的智能数字式汽车组合仪表解决方案,具有实时性好、反应灵敏、精度高等优点。系统可对汽车的车速参数进行实时测量和显示,并具有安全报警功能。系统还预留了SCI和CAN总线接口,便于与汽车其他电子控制系统联接通信功能的扩展。
The principle of how to measure the main automobile running parameters is discussed in this paper and the correlative math model is given. And design a high reliability aptitude instrument solution project of which the core is that the embed microprocessors based on MC9S12DP256B are used is invented. This project has some advantages, such as good real time, high design degree, and high sensitivity to response. Using this instrument, the real time measure and display the parameter of vehicle speed can easily be made. The bus interface of 12C and CAN is obligated in this instrument system. The aim of doing this is to make this system can easily expand system function and can connect and communicate with other automobile electrical control system.
出处
《微计算机信息》
北大核心
2008年第23期292-293,267,共3页
Control & Automation
基金
基于嵌入式系统的重卡汽车仪表的研究河北省科技支撑计划项目(072135168)河北省科技厅
关键词
速度测量
周期测量
安全报警
speed measurement
cycle measurement
Safety alarm
