摘要
近年来,基于计算机的控制技术已被广泛应用到轨道交通信号系统中,为了保证设备或系统的安全性和可靠性,诸多学者将冗余编码应用到数据处理过程,通过对指令层面进行编码运算来检测有关传输过程中的错误。本文提出了一种新型加减法运算错误检测算法,使用右移计算代替除法运算,提高了性能,并达到安全完整性等级4(Safety Integrity Level 4,SIL4)要求。
Control technology based on computers has been widely used in track traffic signal system these years. Many scholars have done research to guarantee the security and reliability of equipment. Scholars have applied the redundant coding to the data processing process, and have detected the error in the transmission process by encoding operation at the instruction level. This paper proposes a new algorithm about addition and subtraction, using shift operation instead of division operation. The algorithm could increase property and error detection rate and fully meet the requirements of SIL4 level.
出处
《信息技术与信息化》
2016年第11期78-81,共4页
Information Technology and Informatization
基金
"十二五"国家科技支撑计划项目(2015BAG19B02)
关键词
可信计算
冗余编码
安全性
错误检测
Vital coding； Redundancy Encoding；Security proof；Error detection
