Design of the Communication System of the Electro-hydraulic Terminal Controller

The hardware circuit composition and communication method of the communication system for the electro-hydraulic terminal controller were analyzed and the communication system based on RS-485 bus was structured.In addition,the hardware circuits and the relevant anti-disturbance were designed and the communication software was programmed.Performance tests were carried out in the laboratory and the results show that this system is of performances with the long distance,high accuracy and good reliability in data transmission.As a result,this system meet the requirements of accuracy and real time in the data transmission between the electro-hydraulic terminal controller and the hydraulic support controller,also between the electro-hydraulic terminal controller and the explosion-proof computer.It is of some practical value.