基于COTS的安全计算机系统

根据国际标准提出了一种基于现货供应商品的二取二安全计算机方案。讨论了系统同步,安全通信协议、数据故障/安全比较等关键技术,提出一种新的系统同步方法,减少了瞬时故障的影响,提高了系统的可用性。样机的试验结果证明其结构设计合理,并具有良好的故障-安全性。

According to international standards, a safety computer system with two out of two configuration based on Commercial-Off-The-Shelf is put forward. Some key technologies such as synchronization, safety communication protocol, data fault, and safety comparison are discussed. A new way of synchronization is adopted to improve the availability. The testing result of the prototype machine shows that the system had reasonable configuration design and good fail-safe performance.