Failure Risk Evaluation of Security SystemBased on Fuzzy FTA

Na Qu; Zhonghai Li; Naiwei Cheng; Jianwei Li
June 2014
Advanced Materials Research;2014, Vol. 945-949, p1094
Academic Journal
The reliability of security system affects the ability of the system to protect people's lives and property safety. Failure risk assessment of security system is an effective method to test the reliability of the system. The fault tree analysis method has been applied to analyze the system failure risk from the angle of each part and considering the human factors. The traditional fault tree analysis method assumes that the probability of bottom events is certain to calculate the top event probability. To obtain accurate bottom events probability is difficult, even impossible because statistical data is not sufficient and the bottom events is fuzzy in fact. Analysis of the fuzzy mathematics theory is introduced into the fault tree. The calculation provides reference for the system design and management.


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