Universal multi-mode redundant pico/nano satellite on-board computer system

The invention discloses a universal multi-mode redundant pico/nano satellite on-board computer system, and the system is used for solving the technical problem that the reliability of the conventional double-mode redundant microsatellite on-board computer system is low. The technical scheme of the universal multimode redundant pico/nano satellite on-board computer system is as follows: the system comprises a main-control computer module, a redundant control module, a data storage module, a bus scheduling module, a power supply module and an external interface, wherein the data storage module is used for ensuring that the important data cannot be lost, and the redundant control module is used for coordinating the working of the MCU of the main-control computer, so that the system can run under the three working modes namely the low power consumption mode, the cold/hot backup mode and the anti-radiation mode. When the system is in the low power consumption mode, the main calculation and the control instruction are completed by a low power consumption microprocessor, so that the power consumption of the system can be reduced; when the system is in the cold/hot backup mode, both low power consumption and high reliability can be realized. Compared with the double-mode redundant computer system, the system provided by the invention has the advantage that the single point of failure of the computer system can be eliminated to the utmost extent, and the reliability of the system can be improved.