Computer system based on multi-module redundancy embedded software and design method
A technology of embedded software and computer systems, applied in the directions of calculation, generation of response errors, instruments, etc., can solve problems such as system work paralysis, and achieve the effects of eliminating asynchrony, improving fault tolerance, and improving reliability.
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[0052] Example 1:
[0053] Attached figure 1 with image 3 As shown, a computer system based on multi-mode redundant embedded software is composed of three redundant modules installed on three computers. The redundant modules include a system management module, a data IO module, a voting module, and a flight Control module and recorder, where:
[0054] System management module: used for system startup and initialization and programming of the above modules;
[0055] Data IO module: set in the computer CPU, used to receive external redundant input data through the input interface of the redundant module, and communicate with the flight control module;
[0056] The voting module includes a synchronization unit, a fault detection and system reconstruction unit, a voting unit and a data interaction unit, among which:
[0057] The synchronization unit is used to control the synchronization of the three computers in the program execution state, cycle timing and time reference, so that the t...
Example Embodiment
[0066] Example 2:
[0067] Attached figure 2 As shown, a computer system design method based on multi-mode redundant embedded software includes:
[0068] Step S1: Deploy redundant modules on the three computers to complete the system initialization and the programming of each module program;
[0069] Step S2: Synchronize. If the synchronization is successful, the data IO modules in the three redundant modules read the input data synchronously; if the synchronization is unsuccessful, set the synchronization flag failure and enter the downgrading process: when a single machine failure is detected, start the system Reconfiguration restores the faulty machine. The currently controlled CPU, that is, the current flight, sends control power-off and power-on instructions to restore the faulty machine. At the same time, the current flight control enters dual-machine hot backup according to the read power-off status. Operating mode.
[0070] Step S3: The three redundant modules cross-transmit...
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