Hydraulic support electrohydraulic control system and ad hoc network method thereof

Abstract

The invention discloses an electric liquid control system for a hydraulic support and a self-organizing network method. The system mainly comprises a primary device group H, a slave device group S, a power supply and communication medium group CI between primary devices, and a power supply and communication medium group CII between the primary devices and slave devices, wherein the primary devices are sequentially connected in series from the head to the tail without isolation devices, and the primary devices and at least partial slave devices form a communication network in a self-organizing network mode to realize the communication of information; and each device which takes part in the network organization is taken as an independent network node to take part in the network organization, thereby realizing the self-organization, the automatic routing and the network self-management of a self-organizing network through the initialization process, the network establishment process, and automatic data routing and network self-management processes by a self-organizing method, solving the problems that the isolation is needed, the equipment failure leads to the communication failure of the system and so on existing in the prior art of electric liquid control systems of hydraulic supports of comprehensive mining caving coal of coal mines, and improving the safety, the reliability, and the production efficiency of the system.

Description

technical field [0001] The invention relates to an electro-hydraulic control system of a hydraulic support for top coal caving in fully mechanized coal mining and a method for forming an ad hoc network of the system. Background technique [0002] The electro-hydraulic control system of the hydraulic support is the key technical equipment to realize the high production and high efficiency of the fully mechanized mining face in the field of coal mining mechanization at home and abroad, which can greatly improve the production efficiency and automation degree. At present, the electro-hydraulic control system of hydraulic support used in my country mainly relies on foreign imports. The electro-hydraulic control technology of foreign hydraulic supports has developed to a relatively mature stage. This system has been widely used in China, the United States, Australia, Germany, Poland, the United Kingdom, France, Japan, Russia and other countries. At present, in the international ...

AI Technical Summary

Problems solved by technology

The electro-hydraulic control system of the hydraulic support based on this connection method has the following disadvantages: 1) When a communication failure occurs in a certain master device in the working face, because the slave device in the system realizes information exchange through the master device, the slave device The information exchange between the equipment and other equipment is forced to be terminated, which will lead to communication failures on the entire working surface, affecting production efficiency and safety; The communication volume of the equipment reduces the real-time performance of the system communication; 3) Since the main equipment can only transmit information sequentially, it takes a lot of time to realize the information transmission of the entire working surface, which affects the real-time performance of the system; 4) Different power supply equipment Isolation devices need to be used between them, which increases system cost and reduces system reliability

The hydraulic support electro-hydraulic control system based on the CAN network communication method has the following disadvantages: 1) The number of CAN nodes is limited. If the slave device participates in the network as a node, the number of master devices in the network is limited, reducing the length of the working face, which is extremely difficult. The earth affects the production efficiency of the working face. If the master-slave networking method is required without affecting the production efficiency, but the relay or interface processing links need to be added, thereby increasing the system cost; 2) If only the master device participates in the networking, The slave device still needs to transmit information through its own master device. When the master device fails to communicate, its slave device will lose its function when it is still normal, which will affect the system production efficiency and safety, and increase the communication traffic of the master device. , thereby affecting the real-time communication and causing potential safety hazards; 3) Isolation devices are required between different power supply equipment, which increases system cost and reduces system reliability

Images