| Summary: | 碩士 === 國立中央大學 === 資訊工程學系碩士在職專班 === 99 === With the coming of the era of Internet of Things (IoT), the changes in demand of the RFID applications are getting more and more increasing. So if we want to extend some new functions on current systems, the developers must upgrade the new codes to overall RFID nodes one by one for deployment. Once the deployment is completed and goes on production, it will be difficult to change the program again. The lack of flexibility and the complicated work of development and deployment steps results in the increasing of the cost and cycle of RFID system development. This thesis presents an RFID gateway platform and its kernel includes a 32-bit microcontroller, RFID middleware, RF wireless communication interface, and a software/hardware integrated module of an embedded web server. By the GRAFCET editor, the remote developers can describe the function and discrete event process of applications in an intuitive way and high-level perspective, translate it into coding table, download to gateway through Internet, and transfer to each RFID node. The GRAFCET Virtual Machine installed on each node runs the program logic according to the coding table in real-time. With the gateway platform and graphical development, it can not only enhance the flexibility of embedded system design but also solve the problem on the difficulty of upgrade and deployment issue.
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