Application of safety data-exchange mechanism of Double-CPU System
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摘要: 轨道交通行业中的嵌入式设备对系统安全性要求高,系统交互数据的安全性尤其重要。根据安全相关系统的安全性特点和需求,提出了一种基于双口RAM的双CPU系统安全数据交互机制,经过在实际项目中应用,可以满足轨旁安全系统中数据传输的安全、可靠、实时、高速传输数据的需求。Abstract: Embedded devices required high security system. The safety of data exchange in railway industry was extremely important. According to the characteristics and needs of the security, the paper proposed safety data-exchange mechanism of double-CPU System based on dual port RAM. The mechanism was applied in actual project, and could meet the needs of safe, reliable, real-time and high-speed data transmission in trackside safety system.
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Key words:
- safety data /
- dual-port RAM /
- high speed /
- role cycling
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[1] 燕 飞,唐 涛.轨道交通信号系统技术的发展和研究现状 [J].中国安全科学学报,2005,15（6）：94-99． [2] 姜 平,周荣根,肖红升,等．基于双口RAM的多机数据 通信技术[J]．仪表技术与传感器,2005（15）：105-107. [3] 任爱玲,凌 明,吴光林,等．一种用于嵌入式内存测试的 高效诊断算法[J].应用科学学报,2005,23（2）：178-182． [4] CENELEC EN50129-2006．Railway Applications:Safety Rela- ted Electronic Systems for Signalling[S]. 2006. [5] IEC61508-2. Functional Safety of Electrical/Electronic /Progra- mmable Electronic Safety-related Systems-Part II[S]. 2010.
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