Hot backup method of hydraulic bracket centralized control system based on terminal controllers

Abstract

The invention discloses a hot backup method of a hydraulic bracket centralized control system based on terminal controllers, being a method for realizing hot backup of a hydraulic bracket centralized control system based on of hydraulic bracket double terminal controllers; the hydraulic bracket centralized control system comprises a crossheading explosion-proof computer which is connected with a main terminal controller and a spare terminal controller in parallel by an RS485 bus and which is serially connected with N bracket controller through an RS485 bus; the hot backup method of the hydraulic bracket centralized control system comprises the following methods: when inquiry commands of the explosion-proof computer to the terminal controllers are not responded, or the response is abnormal, a spare terminal controller centralized control mode is immediately switched to; and when the explosion-proof computer detects that polling results sent by the terminal controllers do not include all state parameters, a communication bus is broken, and a main and spare terminal controller synchronous centralized control mode is immediately switched to. The method can quickly and accurately finish the fault diagnosis and guarantee continuous system operation, so that the reliability of the hydraulic bracket centralized control system is improved, and the production continuity and safety of a fully mechanized coal face are guaranteed.

Description

technical field [0001] The invention relates to an electro-hydraulic control method for an underground hydraulic support in a coal mine, in particular to a hot backup method for a centralized control system of a hydraulic support based on an end controller. Background technique [0002] The centralized control system of existing coal mines uses the hydraulic support centralized control system to realize the automatic coal mining of the fully mechanized mining face. However, due to the complex geological conditions and harsh working environment of the underground coal mine, the centralized control system equipment sometimes fails due to system downtime or damage by external forces. , and the communication bus of the hydraulic support centralized control system is located in the cables between the support controllers. During the production process, the cables between the support controllers are sometimes broken by flying coals, or the supports frequently move and the lifting fr...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a hydraulic support centralized control system hot backup method based on the terminal controller, to solve the problem that the existing hydraulic support centralized control system and the existing system hot backup method cannot be used when the controller or the communication bus fails. All problems can be quickly and effectively diagnosed and dealt with, further improving the reliability of the hydraulic support centralized control system of the fully mechanized mining face

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