Dual-core dual-lockstep two-out-of-two architecture and its security platform
A security platform and lock-step technology, applied in the direction of program control, instrument, computer control, etc., can solve the problem that the monitoring unit cannot guarantee the monitoring of the processing unit, and achieve the effect of reducing the common cause failure of the system
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[0035] refer to figure 1 , the functional block diagram of the dual-core dual-lockstep two-out architecture of the present invention, the security platform based on this architecture includes a main system and a backup system both of which are dual-core dual-lockstep two-out architectures, and the two systems form a two-by-two redundant architecture .
[0036] The main and backup systems both include three processing units, the first processing unit 1, the second processing unit 2, and the third processing unit 3; the main cores in the first processing unit 1 and the second processing unit 2 perform the same safety-critical business , to complete the main function of the system; the first processing unit 1 and the second processing unit 2 verify that the core executes the function of monitoring the comparator. The third processing unit 3 mainly completes the two-for-two voting of the first processing unit 1 and the second processing unit 2, receives the health signal of the ...
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