| Citation: | ZHA Guoqing, XU Yani, KANG Ruiet al. Reliability modeling method for security & protection system of a key area[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(7): 1403-1409. doi: 10.13700/j.bh.1001-5965.2016.0905(in Chinese)
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In order to evaluate the reliability of a security system in the key area, security system reliability of a key area is defined in this paper firstly. Failure distributions of security devices are acquired after the test and estimation of security devices' failure information by exponential distribution. Besides, the functions of subareas and devices are analyzed, and backup relations and reliability relations among areas, subareas and devices are described. Then reliability block diagram model of security systems, subareas and devices is built and the reliability of security systems in key area is calculated by series-parallel reliability block diagram method. Finally, a practical example is presented to indicate the computational simplicity and verify the efficiency of the model to acquire security system reliability of a key area.
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