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Parallel-processing dual fault-tolerant on-satellite processing system

A parallel processing and processing system technology, applied in the direction of response error generation, multi-program device, program synchronization, etc., can solve the problems of difficult state between processors, insufficient utilization of synchronization resources, etc., to achieve difficult state synchronization and processing capacity Improve and reduce the effect of system resources

Active Publication Date: 2015-02-11
SPACE STAR TECH CO LTD
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Problems solved by technology

[0007] The problem solved by the technology of the present invention is: to overcome the deficiencies of the prior art, to provide a dual-machine fault-tolerant on-board processing system for parallel processing, and to apply the dual-machine hot standby architecture to the microprocessors, which solves the problem that the state between the processors is not easy to synchronize And the problem of insufficient resource utilization when a single processor is used for image processing

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  • Parallel-processing dual fault-tolerant on-satellite processing system

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Embodiment Construction

[0022] Such as figure 1 As shown, the present invention includes an image preprocessor 1, a link gating device 2, an image detection and recognition device 3, a satellite data manager 4, a clock unit 5, a watchdog 6, a power management 7 and an image processing sample storage area 8.

[0023] Image preprocessor 1 uses two space-grade FPGA XQR2V6000 from Xilinx, which are respectively connected to the on-board camera and link gate 2; each preprocessor uses 16 pairs of high-speed LVDS differential pairs to connect to the link gate , to ensure 200MB / s data bandwidth between the two; each FPGA preprocesses the raw image data of the camera, the preprocessing includes radiation correction and geometric correction, and the first-level image data obtained after preprocessing is sent to the link gate 2;

[0024] The link gating device 2 adopts the antifuse FPGAA1010A of ACTEL Company, and connects the IO or the external bus of the image preprocessor 1, the image detection and recognit...

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Abstract

A parallel-processing dual fault-tolerant on-satellite processing system comprises an image preprocessor, an image detector and recognizer, a satellite data manager, a clock unit, a watchdog, and a power supply management and image processing sample storage area. The system provided by the invention can ensure the highest processing performance while realizing parallel processing, and a dual fault-tolerant structure is used among microprocessors to ensure the reliability of the entire system. In comparison with the conventional on-satellite single-processor structure, the dual fault-tolerant on-satellite processing system provided by the invention can solve the problem that CPUs (central processing unit) are difficult to synchronize in the state so as to reduce the system resources for keeping the synchronous state of the processor, and can improve the processing performance of the entire system by using the pipeline parallel processing manner.

Description

technical field [0001] The invention relates to a dual-machine fault-tolerant on-board processing system for parallel processing, which is mainly used for high-speed parallel processing of original images of on-board cameras, and uses a double-machine fault-tolerant structure to ensure the reliability of high-performance processing. Background technique [0002] The on-board computer is the control and management center of the satellite's integrated electronic system. It undertakes tasks such as satellite attitude and orbit control, satellite management, and payload data management and processing. It is the center of satellite control, and its importance is self-evident. Moreover, the spaceborne system must operate reliably for a long time in the harsh space environment, so high reliability design becomes the key to system design. Since the on-board processing system has strict requirements on system reliability, the on-board processing system usually adopts redundant design...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/52G06F11/07
Inventor 崔骞朱翔宇沙立伟宋振宇单琦郑宏强
Owner SPACE STAR TECH CO LTD
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