摘要
轨道交通行业中的三取二安全计算机,使用双口RAM进行数据通信,不仅要考虑数据访问冲突、通信速度,还必须考虑数据的正确性和可靠性。针对这些要求,提出了一种基于角色轮换和自检技术的双口RAM数据通信方法,能够高效、安全地完成双口RAM流水线作业。实际项目应用结果显示,该方法可以避免数据访问冲突,提高数据通信速度,并保证数据的安全正确性。
The system based on 2 out of 3 vital computer with high safety requirement in railway industry,which uses dual-port RAM to realize data communication. When using the system, we need consider several issues：data access conflict, communication speed, safety and reliability of the data. For meeting these requirement, a method of dual-port RAM data communication based on role cycling and self- checking technology is proposed, which can complete the pipeline operation with high efficiency and safety. Experimental results show that the method can avoid data access conflict,increase data communication speed, and ensure the data＇s safety and reliability.
出处
《单片机与嵌入式系统应用》
2015年第2期13-16,共4页
Microcontrollers & Embedded Systems
