Automatic switching control method of hot-standby redundancy of remote control computer

Abstract

The invention relates to an automatic switching control method of hot-standby redundancy of a remote control computer. The method is applied to a ground measurement-launch-control flow of a launch vehicle to realize hot-standby redundancy switching of a remote control computer during long-distance testing. Hardware units of two re mote control computers redundant to each other are equipped with dual-network cards, dual-network card binding is carried out by an INTEL Team technique and only one IP address is used externally, and a network is formed by a dual-machine-redundant Ethernet switch. The two remote control computers can issue network variables by the Ethernet network to realize a mutual monitoring function; and data communication is carried out by the Ethernet network and a programmable logic controller (PLC). When a fault occurs at one remote control computer, the other remote control computer monitors the state of the fault remote control computer and the current control state of the fault computer is synchronized to the other fault-free computer automatically, so that automatic switching control is realized.

Description

Technical field [0001] The invention belongs to the field of launch vehicle ground equipment test control and designs a remote control computer hot standby redundant automatic switching control method. Background technique [0002] During the launch vehicle ground test process, the control computer is set up in the test and launch control room to test and control the launch vehicle remotely. Therefore, the control interaction between the remote control computer and the programmable logic controller PLC at the front end of the launch vehicle launch site is very important. . [0003] Due to requirements for system reliability and other requirements, remote control computers generally use dual-machine hot standby redundancy. Since the existing technology does not have a universal fault detection redundancy switching method for PCs; therefore, remote control computers use hot standby redundancy. Redundant switching in the remaining method is generally divided into three methods...

AI Technical Summary

Problems solved by technology

[0004] For the manual switching method, when a fault occurs, the operator needs to confirm the fault phenomenon first, and then manually switch on the operation man-machine interface. It is necessary to specify the judgment standard in advance and need to have a decision whether to switch. The efficiency of manual judgment is relatively low;

[0005] For the method of complete dual-machine hot backup, both machines have monitoring and control functions at the same time. In this method, there is no switching time, and the two machines can be seamlessly switched. However, since the two machines have control functions at the same time, it may introduce the risk of misuse The possibility of operation and the hidden dangers are more serious, so the method of complete dual-system hot backup also has certain risks

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