【作者】 陈昕静； 易健雄； 彭力；

【Author】 CHEN Xin-jing YI Jian-xiong PENG Li (School of Communication and Control Engineering,Southern Yangtze University,Wuxi 214122,China.

【机构】 江南大学 通信与控制工程学院；

【摘要】 以数字信号处理器 TMS320C5402DSP 和 SJA1000控制器为核心组成了 CAN 总线接口模块,介绍了硬件原理图和 SJA1000的初始化、发送和接收模块程序的设计方法．整个系统的设计在保证可靠性的基础上具有通用性、实时性和可扩展性,并使用 PCA82C250作为 CAN 总线控制器接口芯片,设计了 CAN 总线智能适配卡,提高了 CAN 总线适配卡的传输能力．针对 CAN 总线在特殊环境下容易受到外界干扰的弱点,使用6N137进行信号隔离, 使该适配卡达到了本安型标准．更多还原

【Abstract】 The module of CAN bus interface is composed of DSP TMS320C5402 and SJA1000 controller.The hardware principle and the programming methods for initialization,transmitting and receiving modules of SJA1000 are introduced.On the foundation of reliability,the design of whole system is universal,real-time and expandable.A new intelligent communication adapter based on the controller PCA82C250 of CAN bus interface is designed.The transfer capacity of CAN bus is also enhanced.For CAN bus is easily disturbed by the external interference under the special environment,the chip 6N137 is employed to insulate,and the system security is improved.更多还原