RS-485 Bus Design of a Missile Simulation Training System

Abstract: In a missile simulation training system with one-master and multi-slaves distributed system structure, a universal controller is necessary due to the system composed with several controllers. In this research, the designed controllers communicate with each other and upper control computer through RS-485 field bus. RS-485 bus including interface circuits, transmission protocol, Cyclic Redundancy Check (CRC) method and upper control test software is designed and proposed. The universal controller adopting the designed RS-485 interface circuits is connected through twisted-pair and makes the simulation system, then the controller is tested in line. The results show that the RS-485 bus communicates effectively using the protocol and CRC method, data transmission rates reaches 115.2 kbps, and has a good stability.
Keywords: simulation training,RS-485 bus, transmission protocol, CRC, universalcontroller
Author: Xinjie Ji, GuozhouWang, FangLiu
Journal Code: jptkomputergg130050

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