双向实时通信冲突解决方案研究  

Solution for two way conflict in real-time communication

作　　者：侯丹[1] 何欣[1] 

机构地区：[1]北京空间机电研究所,北京100190

出　　处：《现代电子技术》2013年第14期48-50,54,共4页Modern Electronics Technique

摘　　要：在工业生产中,产品了获得工业设备信息,需要实时与计算机进行通信。工业设备获取传感器的信息,需要RS 485,SPI,CAN等接口实时与传感器设备通信。当二者同时时,微控制器产生中断冲突,造成设备数据丢失或控制计算机的通信死机。为了保证产品的稳定性,提出了一种基于双微控制器,并同时利用异步FIFO实现双向通信的速度匹配和数据交换。实验证明该方法有效地解决双向实时通信产生的通信的中断冲突,保证工业设备的稳定性和数据通信的准确。In the industry production, the real-time communication with computer is needed to get the information of the production equipment, and RS 485, SPI and CAN ports are needed for real-time communicate with sensor equipment to get the information from sensors. When the two-way communication appears at the same time, the microprocessor generates interruption conflict. This may cause data loss or computer die. In order to guarantee the product quality, a method based on dual micropro-cessor is put forward, in which the asynchronous FIFO is used to realize the rate matching and the data exchanging of two-way communication. The experiment proved that the method can eliminate the interruption conflict in the two-way real-time communi- cation effectively, and ensure the stability of industry production and veracity of data communication.

关 键 词：双微控制器 异步FIFO 双向实时通信 中断冲突 

分 类 号：TN911-34[电子电信—通信与信息系统]