In this paper, the authors present an implementation of a plug-n-play Web sensor based on
Web service approach utilizing open source software and adopting low cost hardware
architecture. After an introduction to the Web service technology, the problem of the dynamic
services and one solution will be dealt. In this way, if it inserted a new sensor in a network,
its services are automatically published without network reconfiguration. The sensor is
presented in the framework of a hierarchical distributed system for metrological application …