基于ATmega8515单片机的CAN总线数据采集系统

针对某武器系统的特点,设计了基于CAN总线的数据采集系统。对数据采集系统的组成、工作原理和采取的技术手段进行了详细论述。详细描述了ATmega8515单片机的开发方法,包括电路的设计和驱动程序的设计等。为了避免对武器系统的干扰,该数据采集设备与采集对象的电气连接部分,均采取了隔离措施,采用了只听方式接收数据,不向CAN总线发出任何信号。本设备利用GPS-OEM板和单片机实现标准时间的精确计时,满足实时性的要求。

CAN Data Acquisition System Based on ATmega8515 Microcontroller

A CAN data acquisition system based on ATmega8515 microcontroller is developed according to the particular features of a weapon system.The construction of data acquisition system,principle and developing techniques are discussed in detail.Developing methods of ATmega8515 microcontroller,including portal circuit and driving programs,etc,are also described.In order to avoid interfering weapon system,not only isolation methods are used between data acquisition equipment and weapon system,but also receiving method of acquiring data from weapon system is used,which means not transferring any data to CAN.Furthermore,GPS-OEM card and MCU counter are used to obtain standard time with high precision to satisfy the real-time requirements.