Control logic design of electronic safety system and failure rate calculation
In view of the increasing safety requirements of modern warfare munitions,a new design method of electronic safety system arming logic is proposed,and the accidental arming probability of different safety logic is compared and calculated by using Markov theory,and the results show that the control logic using time window,two environmental signals to control a switch and the abnormal environment security state locking has higher safety.The all-electronic safety system arming logic based on dual microcontrollers is designed,and the accidental disarming probability of different safety control logic device combinations considering common cause failure is calculated,and the results show that the heterogeneous dual core logic control device has higher safety with a failure rate of 7.530 3×10-9,meeting the requirements of GJB373B—2019 fuze safety design guidelines.
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