Abstract
In order to encourage the spread of distributed energy systems, an autonomous diagnosis is effective for the supporting technology. The purpose of this study is to develop the autonomous diagnosis algorithm using the fieldbus, which makes it possible to share much information of field devices. The authors constructed an experimental apparatus of a hot water supply process, which is one of the key component of distributed energy systems, and a measurement and control system with fieldbus devices. In this paper, the integration algorithm of the process diagnosis on the basis of the calculation of the overall heat transfer coefficient and the device monitoring using the statuses in the FOUNDATION fieldbus was developed and its effectiveness was confirmed experimentally.
