Abstract
Whether in the field of industrial control or signal test, the achievement of data fusionwhich is
based on different munication protocol is urgent needed. However, in the currentmarket,
protocol converter can only achieve conversion betweentwo protocols, such as RS485 to
RS232, USB to RS485 and so on. Cases of coexistencedata bus,it has great practical
significance to develop an equipment for protocolconversion amongdifferent buses.
Based on the reasons above, a high-speed RS485-based multi-bus municationsystem is
presented in this paper. The entire system which is used to realize the threecategories of bus
munication protocol conversion consists of some RS485 nodes, eachnode contains the
munication interfaces including RS232, RS485 and USB. In thepractical application, the
number of nodes can be changed as required to form system, forachievement of data fusion
between a variety of bus munication protocol.
