Design of Transducer Interface Agent and its Protocol for WSN Middleware

This paper presents a simple design and implementation of a transducer interface agent. The agent communicates with a middleware for wireless sensor networks, and can be installed on the PC or any small gateway devices. The agent’s chief end is to replace the network capable application processor (NCAP) and wireless transducer interface module (WTIM) with the agent itself in the IEEE 1451 family of standards. In order to support various non-standardized transducers, we propose to use a variety of configuration template files instead of modifying the agent itself. While a wrapper of the transducer interface agent manages various types of sensors, the controller deals with many actuators. In order to justify the usefulness of the proposed agent and its protocol, we carried out health monitoring experiments in a mock-up railway system and verified the efficiency.

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