DocumentCode :
663275
Title :
Safety assessment of COTS RTOS based computer platform applied in train control system
Author :
Guo Zhou ; Huibing Zhao ; Hongyu Quan
Author_Institution :
Sch. of Electron. & Inf. Eng., Beijing Jiaotong Univ., Beijing, China
fYear :
2013
fDate :
Aug. 30 2013-Sept. 1 2013
Firstpage :
60
Lastpage :
64
Abstract :
Commercial off-the-shelf (COTS) based computer platform is deemed as a promising candidate for application in safety critical systems. The foresight of this choice will make system transplant and software reuse efficient, and help vendors conquer the stress of development cycle and cost. Actually, it is nothing new in aviation and aerospace. However, no literature is proposed to argue the safety issues on a viewpoint of system attribute in train control system but only concentrates the behavior of COTS products themselves. System theory is the key to construct a solid and coherent safety assurance framework for the interaction between COTS sector and other parts, which will explicitly demonstrate the concept of safety on a system level. In this paper, a picture of propagation from bottom functional failures and performance degradation of COTS resource to the top-level hazardous events is depicted to show how safety analysis and risk evaluation of train control system is affected. Additionally, several experiments are carried out to support the argument.
Keywords :
control engineering computing; operating systems (computers); railway engineering; railway safety; real-time systems; safety-critical software; COTS RTOS based computer platform; COTS products; COTS resource; COTS sector; coherent safety assurance framework; commercial off-the-shelf based computer platform; development cost; development cycle; functional failures; performance degradation; real-time operating system; safety analysis; safety assessment; safety critical systems; software reusability; system theory; system transplant; top-level hazardous events; train control system; Decision support systems; μC/OS-II; COTS; RTOS; fault injection; safety analysis; train control system;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Intelligent Rail Transportation (ICIRT), 2013 IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4673-5278-9
Type :
conf
DOI :
10.1109/ICIRT.2013.6696268
Filename :
6696268
Link To Document :
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