Industrial control interlocking method on basis of network multiplexing

Abstract

The invention discloses an industrial control interlocking method on the basis of network multiplexing. The industrial control interlocking method includes steps of 1, establishing redundant GOOSE double networks and MMS (multimedia messaging service) monitoring double networks and allowing industrial measurement and control devices to access the GOOSE double networks and the MMS monitoring doublenetworks via switches by the aid of independent network cards; 2, receiving and transmitting GOOSE messages by the aid of the industrial measurement and control devices via the GOOSE double networks;3, carrying out GOOSE network on-off detection and relevant logical judgment by the aid of the industrial measurement and control devices, transmitting GOOSE link breakage alarm to backgrounds via the MMS monitoring double networks after the fact that channel links of the GOOSE double networks are broken is detected, or analyzing the GOOSE messages by the aid of the industrial measurement and control devices to output corresponding signals if the channel links of the GOOSE double networks are not broken, and carrying out actions of corresponding outlets by the aid of logical configuration. The GOOSE messages are provided with retransmission mechanisms, a unique code is set for each GOOSE message, data of the same GOOSE message are transmitted via the GOOSE double networks, and only one ofthe GOOSE messages with the identical codes can be received by each industrial measurement and control device. The industrial control interlocking method has the advantage that the interlocking alarmdata transmission reliability and real-time performance can be guaranteed.

Description

technical field [0001] The invention relates to an industrial control interlocking method based on network multiplexing. Background technique [0002] In substation auxiliary systems and industrial applications, equipment semaphores are generally connected according to the principle of nearest access, which may cause different equipment signals to be connected to different devices, so that the required semaphores need to be exchanged between devices. Taking the access control system and fire protection system in the substation intelligent auxiliary system as an example, when a fire alarm occurs, it is necessary to interlock the control to open the escape door and close the fire shutter door. Therefore, the fire alarm signal must be quickly and reliably informed to the access control system. The system completes the corresponding operation. [0003] Generally speaking, the main control devices of the two systems are not installed in the same place, and may be far apart. Con...

AI Technical Summary

Problems solved by technology

Conventionally, hard wiring is used to realize this kind of interlocking, and signal cables need to be laid. Therefore, when there are many interlocking signals and the locations of subsystems are far apart, the cost of this solution is relatively high. On the one hand, the cost of cables, on the other hand is the cost of construction, laying and maintenance

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