A seamless redundant switching data transmission system and its implementation method

Abstract

The invention discloses a seamless-redundancy-switching data transmission system and method. The data transmission system comprises a device to be test, a data acquisition computer, a data computer A, a data computer B, a data relay computer and a data browse computer. The data acquisition computer is responsible for collecting parameter information of the device to be test in real time and simultaneously sending an acquisition start instruction to the data computer A and the data computer B when the acquisition starts; after receiving the acquisition start instruction sent by the data acquisition computer, the data computer A and the data computer B simultaneously start to send heartbeat information periodically to the data relay computer; the data computer A and the data computer B receive collected data sent by the data acquisition computer, then store the data to local databases respectively, and at the same time, send the data to the data relay computer; and the data relay computer receives the data sent by the data computer A and the data computer B simultaneously and processes the data.

Description

technical field [0001] The invention belongs to the technical field of computer information processing, and in particular relates to a seamless redundant switching data transmission system and an implementation method thereof. Background technique [0002] With the development of space science and technology, the functions and structures of spacecraft are becoming more and more complex, and it is becoming more and more difficult for such a large and complex system to operate in the way the designer expected. In the process of spacecraft testing, the data transmission system used has higher requirements than traditional transmission methods, and a reliable data transmission system is the basis for the normal operation of spacecraft testing. Due to the requirements of test automation at this stage, many test equipment are unattended, and the test process is executed independently by the equipment after issuing instructions. Therefore, it is particularly important to establish ...

AI Technical Summary

Problems solved by technology

Due to the requirements of test automation at this stage, many test equipment are unattended, and the test process is executed independently by the equipment after issuing instructions. Therefore, it is particularly important to establish a reliable path from the acquisition equipment to the data processing equipment. Data loss due to communication errors, impacting the testing process

[0003] In the existing test process, in order to ensure the effective communication of test data, the use of transmission channel redundancy is an effective way to improve reliability. However, in the traditional transmission channel redundancy mechanism, two transmission channel redundancy is taken as an example to determine which It takes a certain period of time for a path to fail before switching to another path for communication, and the data sent during the switching time cannot be sent to the data processing device and is lost. For a network environment with a long switching time or a fast data transmission rate , the situation of data loss is more obvious. In addition, the cost of spacecraft system equipment is expensive. How to use effective methods to shorten the switching time, or even use two sets of completely identical redundant equipment to form two independent paths? The way of switching to ensure the integrity of data has always been a difficult problem in the development of redundant switching methods

From the literature, there are no examples of seamless redundant switching design for spacecraft data acquisition systems at home and abroad. Therefore, to develop a low-cost, simple and easy seamless redundant switching data transmission suitable for spacecraft systems The system and method have important significance and practical value

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