Abstract
Abstract Industrial site interconnection is regarded as the focus of Industrie 4.0. However, there are various types of equipment and communication interfaces on the industrial site, and it is difficult to unify numerous heterogeneous protocols. Herein, based on the idea of software-defined, a smart gateway is rationally designed for industrial interconnection scenes with hardware platformization and software modularization. The function, interface, and parameters of the gateway can be defined. Moreover, it can conveniently and quickly connect with multiple heterogeneous devices. Therefore, this well-designed gateway offers an opportunity for equipment data collection, normalization processing and transmission protocol conversion to OPC UA (Open Platform Communications Unified Architecture) or MQTT (Message Queuing Telemetry Transport). As demonstrated in test results, this gateway obtains an advanced design concept, scalable architecture and strong applicability in heterogeneous scenes.
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