Time determinacy distributed spacecraft electronic system design method

An electronic system and design method technology, applied in design optimization/simulation, special data processing applications, geometric CAD, etc., can solve the problem that the spacecraft electronic system architecture is difficult to meet application requirements, information transfer delay uncertainty, stand-alone interface and interconnection Problems such as too many cables to achieve the effect of ensuring predictability, real-time performance, and consistency

CN112395720APending Publication Date: 2021-02-23BEIJING INST OF CONTROL ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-02-23

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Abstract

The invention discloses a time determinacy distributed spacecraft electronic system design method which solves the problems that an existing spacecraft electronic system is insufficient in expansibility and poor in data transmission time determinacy. The method comprises the steps of adopting a hierarchical analysis method to determine function distribution of a spacecraft electronic system; selecting a time-triggered Ethernet as a backbone network of the electronic system, adopting a distributed architecture on a network topology structure, and distributing system computing functions to a plurality of pieces of equipment; planning a task to be executed by an electronic system, estimating the use condition of system resources in advance, and realizing static configuration of computing resources in a pre-allocation manner; and planning a message transmission mode according to the priority, so that the high-priority message has higher time determinacy and transmission reliability under the condition of meeting the required bandwidth.
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Description

technical field

[0001] The invention proposes a time-deterministic distributed spacecraft electronic system design method, design time-deterministic network technology and spacecraft electronic system design technology, and belongs to the field of spacecraft electronic system design. Background technique

[0002] With the increasing functional complexity of spacecraft, the amount of communication information and the degree of integration continue to increase, the electronic systems on spacecraft are developing in the direction of modularization, integration and standardization. The design of the spacecraft electronic system not only determines the physical structure of the system and the way of information interaction, but also directly affects the development and verification, testability and operability of the system.

[0003] Traditional spacecraft electronic systems in my country usually use point-to-point connections (RS422, star structure of self-defined synchronous se...

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Embodiment Construction

[0043] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0044] A time-deterministic distributed spacecraft electronic system design method, the steps of the method include:

[0045] (1) A layered model describes system functions, which includes input layer, information processing layer, decision-making layer, output layer and driver layer;

[0046] The input layer is used to receive external information of the spacecraft electronic system, and output the received external information to the information processing layer;

[0047] The information processing layer is used to receive the external information output by the input layer, and output the received external information to the decision-making layer after processing;

[0048] The decision-making layer is used to receive the processed external inform...