Abstract: According to the problems of short control distance of the present electro-hydraulic control system for hydraulic support, poor real-time communication, and the agreement does not open, combined with the need of coal mining environment and unmanned mining, hydraulic support remote control system based on the RS485 bus and real-time database is proposed. The paper described the structure of the system, designed underground remote control communication systems and ground network control communication system, given the communication plan, communication theory and communication protocols, achieved local control, remote control of hydraulic support, and networked control on the ground through simulation experiments and analysis.

Key words: RS485 bus, Real-time database, hydraulic support, remote control system, communication