文档介绍：摘要
课题所设计的内容是一种基于现场总线(CAN总线)的汽车智能仪表系统,系统能够精确的测量模拟装置产生的汽车发动机转速、车速、燃油量、冷却液温度等参数。并且能够通过显示控件显示所有测量的参数,提高了人机交互性。
文中对汽车智能仪表系统的结构和工作原理做了详细的阐述,对信号模拟装置的选择和显示形式的选择方案分别作了比较。文中从整体上阐述了CAN总线汽车组合仪表的设计开发方法,分别从CAN理论及协议、仪表硬件设计和软件编程三个方面全面论述了开发CAN总线汽车仪表所要解决的问题及解决方案。在硬件上完成了基于MC9
S12DG128B单片机的仪表电路设计,在软件上开发了CAN总线收发程序,完成了对步进电机、伺服电机、LCD液晶显示屏等仪表关键器件的控制,并实现了对CAN总线仪表的远程控制。
利用自行设计的信号模拟装置完成了验证试验,经过实际运行和测试表明,CAN总线汽车仪表在显示的实时性、准确性以及可靠性等方面都优于传统的电气仪表。
关键词: CAN总线;汽车智能仪表;单片机;步进电机
ABSTRACT
Designed by the subject content is based on the fieldbus (CAN bus) vehicle intelligent instrument system,precise measurement can have a car simulator engine speed,speed,fuel quantity,coolant temperature and other parameters. And to the parameters measured displayed through the display control to improve the puter interaction.
The design of intelligent instrumentation system for vehicle structure and working principle elaborated on the choice of signal simulator and display the form of options pared,respectively. This article described a bination of CAN Bus vehicle instrumentation design and development methods,theory and from the CAN agreement, instrument hardware design and software programming on three aspects of prehensive development of the CAN bus automotive instrument to solve the problems and solutions and pletion of the verification test.
pleted in the hardware of the instrument based on single chip MC9S12DG128B circuit design,software development in a CAN bus transceiver pleted a stepper motor,servo motor,LCD liquid crystal display devices, such as the key instrument of control,and to achieve CAN bus of the remote control of instrumentation.
Actual operation and tests have shown that,CAN bus in automotive dashboard displays ,accuracy and reliability are superior to traditional mechanical core instruments, the future development trend of automobile instrument.
Key words: CAN Bus;Automotive Intelligent Interactive;Single Chip;Stepping Motor
目录
摘要 I
ABSTRACT II
第1章绪论 1
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