software redundancy design for a human-machine interface in railway vehicles

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	software redundancy design for a human-machine interface in railway vehicles
	Zheng G. ; Chen J.
	2010
会议名称	12th International Conference on Computer System Design and Operation in the Railways and other Transit Systems, COMPRAIL 2010
会议日期	August 31,
会议地点	Beijing, China
关键词	Cost benefit analysis Fault tolerance Fault tolerant computer systems Locomotives Machine components Machine design Man machine systems Railroads Real time systems Redundancy Reliability analysis Software design Software reliability Taxonomies Vehicles
页码	221-232
英文摘要	The Human-Machine Interface (HMI), which displays the real-time status of electrical systems, interacts with the driver or operator, and collects and reports system fault information, is an important device in railway vehicles. The HMI is a critical component of the control and diagnosis system in the railway vehicle, thus the reliability of the HMI software affects the reliability and safety of the whole railway vehicle. Therefore, it is necessary to design the HMI software with high reliability for railway vehicles so as to ensure the reliability, stability and safety of the railway vehicle operation. This paper analyzes the HMI software function requirements, which include information display, the human machine interaction, and communication. A kind of redundancy mechanism is proposed, which employs two structural redundancy methods: N-version programming and recovery blocks. The HMI software is divided into the information display module, the human-machine interaction module and the communication module, and each module is made up of some components. Based on the analysis of the reliability requirement, complexity, and the implementation cost for each component in the HMI software modules, the corresponding redundancy design mechanism is proposed, which consider the tradeoff between the reliability and the cost. In order to evaluate the reliability of the designed redundancy mechanism, a scenario-based reliability analysis method is used to calculate the reliability of the HMI software, which constructs five scenarios and employs the component dependency graph to compute the reliability. The reliability of the HMI software after redundancy design is compared with that before the redundancy design. © 2010 WIT Press.
收录类别	EI
会议主办者	WIT Transactions on the Built Environment
会议录	WIT Transactions on the Built Environment
会议录出版地	United Kingdom
语种	英语
ISSN号	17433509
ISBN号	9781850000000
内容类型	会议论文
源URL	[http://124.16.136.157/handle/311060/8908]
专题	软件研究所_软件所图书馆_2010软件所会议论文
推荐引用方式 GB/T 7714	Zheng G.,Chen J.. software redundancy design for a human-machine interface in railway vehicles[C]. 见:12th International Conference on Computer System Design and Operation in the Railways and other Transit Systems, COMPRAIL 2010. Beijing, China. August 31,.