Method for achieving dual-network hot standby redundancy of blank pipe automatic system

Abstract

The invention discloses a method for achieving dual-network hot standby redundancy of a blank pipe automatic system. The method comprises the steps of establishing network hardware connecting topology, establishing network state monitoring process in an application layer of a control procedure of each machine, establishing a working net switching control procedure in a network monitoring procedure of each machine, establishing a redundancy sending operation procedure at the data sending end of each machine, establishing a data filtering control procedure at the receiving end of each machine, establishing a network state monitoring terminal and the like. The method has the advantages that a distributed network monitoring mechanism is adopted, the network state is monitored in real time, and the automatic switching speed of a network is high; two three-layer exchangers are in cascade connection so that when one of the networks of each machine is normal, communication between the two sides can be conducted and the cross fault can be avoided; in terms of data transmission, data are simultaneously sent to the main network and the standby network of each receiving end by one sending end, and redundancy of the data on the main network and the standby network is achieved; due to the filtering of data numbers and timestamps, a repeat and leakage of data receiving are avoided and the effectiveness and the seamlessness of switching are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of aviation automatic control, in particular to a dual-network hot standby redundancy realization method of an air traffic control automation system. Background technique [0002] In the field of aviation, the requirements for system stability and safety are very high, and sometimes even certain efficiency can be sacrificed in exchange for stable performance. The network is the information channel that connects the data processing nodes of the air traffic control automation system, and is the basic medium that connects this distributed system into a whole. Therefore, solving the reliability of data transmission in the network is a very important issue in the communication process. In order to prevent communication interruption and system crash caused by software, hardware or line failure, basically all similar systems currently adopt a dual-network structure to ensure that the air traffic control automation...

AI Technical Summary

Problems solved by technology

It takes time to judge a network failure, resulting in a large loss of sent data during the judgment period, such as UDP transmission without a retransmission mechanism

If after switching, the network resends untransmitted data, such as UDP transmission and TCP transmission with a retransmission mechanism, it will cause the receiver to process a large amount of data in a short period of time, and these data may already be outdated data that the receiver does not care about

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