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

A space-borne computer and multi-mode redundancy technology, which is applied in hardware redundancy for data error detection, response error generation, data processing power supply, etc., can solve problems such as poor reliability, improve reliability, eliminate Effect of Single Point of Failure and High Reliability

Inactive Publication Date: 2014-12-03
NORTHWESTERN POLYTECHNICAL UNIV
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AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiency of poor reliability of the existing two-mode redundant micro-satellite on-board computer system, the present invention provides a general multi-mode redundant pico / nano-satellite on-board computer system

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Embodiment Construction

[0025] refer to figure 1 -6. The general multi-mode redundant pico / nano-satellite onboard computer system of the present invention includes 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.

[0026] The main control computer module is composed of three isomorphic MSP430 series MCUs. This series of MCUs has a variety of low power consumption modes. It adopts a common triple-mode redundant architecture design, and the three microprocessors are connected in the same way as the external connection. When working in anti-radiation mode, the three microprocessors perform the same operation at the same time, and most of the same outputs are used as the correct output of the voting system. As long as two of the same errors do not appear in the three microprocessors at the same time, they can be masked. Faulty module errors to ensure correct output of the system. Since the thre...

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Abstract

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.

Description

technical field [0001] The invention relates to a pico / nano satellite onboard computer system, in particular to a general multi-mode redundant pico / nano satellite onboard computer system. Background technique [0002] Pico / nano-satellites refer to tiny satellites weighing in the kilogram range. Pico / nano satellites mostly use micro-electromechanical system technology and its multiple integration technology. Compared with larger satellites, they have the advantages of low cost, short manufacturing and launch cycles, and quick emergency response. It has a wide range of applications in fields such as testing and technical testing. [0003] The onboard computer system is the application of computer technology in the space environment, and is responsible for completing the control and data processing tasks of space vehicles. Due to the harsh conditions of the space environment, it poses a huge challenge to the performance, reliability and cost of the spaceborne computer system....

Claims

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Application Information

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IPC IPC(8): G06F11/16G06F1/32
Inventor 高武龚超张凤兰袁建平高翔
Owner NORTHWESTERN POLYTECHNICAL UNIV
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