Reconfigurable on-board computer of redundancy arbitration mechanism

Abstract

The invention relates to a reconfigurable on-board computer of a redundancy arbitration mechanism. The reconfigurable on-board computer consists of a main processing unit, a backup processing unit, an arbitration module and a power supply management module, wherein by adopting a double-computer cold backup mode and based on a Power PC processor and a software configurable interface, the main processing unit and the backup processing unit can realize software configuration of the on-board computer through satellite-to-ground links. Algorithms of failure detection, self-check and double-computer switching arbitration of the on-board computer are stored in the arbitration module; the arbitration module consists of two sets of FPGA, which detect failures of the main processing unit and the backup processing unit, performs internal self-check in real time respectively, form failure judgment on the main processing unit and the backup processing unit and the redundancy arbitration of the double-computer switching, and finally report the arbitration results such as restoration, switching and the like to the power supply management module in an instruction format for performing. The reconfigurable on-board computer performs cold backup design on the main processing unit and the backup processing unit, and performs failure detection and double-computer switching by using the arbitrationmodule, so that the reconfigurable on-board computer has the advantages of high processing capacity, flexible function, high reliability, low energy consumption, and the computer has important value in the development of electronic systems of micro / nano satellites.

Description

technical field [0001] The invention relates to a reconfigurable satellite-borne computer under a redundant arbitration mechanism, which can be used to improve the processing capacity, reliability and functional flexibility of the satellite-borne computer, and effectively control energy consumption, and is especially suitable for micro- and nano-satellite electronics System technical requirements. Background technique [0002] The on-board computer is one of the key technologies of the satellite electronic system. It is used for on-board mission scheduling, attitude determination and control calculation, ground command analysis and distribution, and measurement and control communication management. It is the core of satellite task processing. The onboard computer is generally based on a certain mature embedded hardware platform and has real-time multitasking functions. With the increasingly complex and diverse space missions, micro-satellites, nano-satellites, multi-satelli...

AI Technical Summary

Problems solved by technology

The traditional space-borne computer has weak processing ability and a single task. As the satellite processing core, in order to ensure its reliable operation, a simple multi-computer hot backup configuration is usually adopted, and the cost and power consumption are difficult to control. At the same time, the satellite software is relatively fixed and has simple functions. , and does not have functions such as online upgrade

In the face of many technical deficiencies, in recent years, domestic and foreign researches on the high performance, high reliability, low power consumption, small size technology of spaceborne computer hardware and software reconfigurable and upgradeable technology are being carried out. Due to the particularity of performance requirements, most of them use multiple low-speed processors for decentralized processing, simple technologies such as switch control for multi-machine backup and on-board software backup and recovery, which still cannot solve the problem of high performance and low power consumption, multi-function and high reliability. And complex software and contradictions such as upgrading and reconstruction

In short, at present, there is no relatively complete onboard computer in terms of performance, reliability, and power consumption at home and abroad. The present invention proposes a reconfigurable onboard computer under a redundant arbitration mechanism.

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