Development of an intelligent adapter for field computer

Abstract

A kind of intelligent adapter between CAN bus network and PC104 system was developed. The adapter is made up of an interface of CAN bus network, a CAN receiver connecting with the interface, a CAN controller, a PC104 busslot, a high speed opt coupler, a microprocessor and a parallel interface circuit. PC104 system can just take charge of transmitting and receiving data without performing maintenance of CAN bus because of using the microprocessor. Thus the system resource can be saved for other tasks. The adapter uses parallel communication mode and has high data transmission rate. The drive V×D of the adapter and the functional module of the PC104 system were programmed. Debugging shows the adapter works stably and satisfactorily. © 2005 by International Federation for Information Processing.