Hot standby method of execution unit of full-electronic interlocking system and hot standby interlocking system

Abstract

The invention provides a hot standby method for execution units of a full-electronic interlocking system and a hot standby interlocking system. The hot standby method comprises the following steps: an interlocking machine determines main and standby system identities of two full-electronic execution units; the main and standby system full-electronic execution unit obtains a command of the interlocking machine through the communication unit; the main system full-electronic execution unit analyzes the command, outputs the command and updates the working state, and the standby system full-electronic execution unit follows the main system full-electronic execution unit to execute output and updates the working state. According to the invention, cross hot standby of the two systems of all-electronic execution units is realized, as long as one of the hot standby all-electronic execution units in the system works normally, even if a plurality of all-electronic execution units in the two systems fail, normal operation of the system is not influenced, and the availability of the system is greatly improved. The two-system full-electronic execution unit adopts a mode that the output drive of the standby system follows the main system, so that the two-system full-electronic execution unit is ensured to drive the outdoor equipment consistently, and the system safety is ensured.

Description

technical field [0001] The invention belongs to the technical field of rail transit, and in particular relates to a hot standby method and a hot standby interlock system for an executive unit of a fully electronic interlock system. Background technique [0002] Most of the existing railway interlocking control systems adopt a two-by-two structure system, which is divided into A / B two systems. Each system includes an interlocking machine, a communication unit, and an execution unit. It is the switching of the whole system, or the switching of the execution unit of the whole system. However, if there is an execution unit failure in both series of equipment, the system will not operate normally, and the redundancy is low, so there is still a lot of room for improvement in terms of availability. [0003] Part of the full electronic interlocking system realizes redundant switching between the full electronic execution units by using conditional action safety power supply and saf...

AI Technical Summary

Problems solved by technology

In particular, there is no synchronization mechanism between the two series of fully electronic execution units. When the two systems are driving external devices, if the main / standby switch occurs, it will easily cause outdoor signal jitter, wrong display, etc., thus posing safety hazards.

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