Masayuki Hirafuji

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This paper presents the framework and function of an agent system developed for Field Server to manage Web-based sensor network. This system consisting of an agent program, program configuration files, and a Web interface, can easily and autonomously manage Web-based sensor nodes via the Internet. It can perform simple function such as monitoring to more(More)
Recently, in the field of agriculture, it is important to monitor field information (temperature, humidity, photosynthesis photon flux density, etc.), to get field/crops view for growing conditions, and to record field operations. We have developed a " Field Server " which automatically monitors field information and controls some equipment via a Web(More)
To achieve a smart sensor network with Web-based sensor nodes such as Field Servers, we propose a hierarchical agent system that manages sensor nodes autonomously and flexibly, and acts as an intelligent module of the sensor network. Our agent can treat Web applications in addition to sensor nodes and is a Web application itself; thus, it can control other(More)
Visible light imaging of citrus fruit from Mie Prefecture of Japan was performed to determine whether an algorithm could be developed to predict the sugar content. This nondestructive classification showed that the accurate segmentation of different images can be realized by a correlation analysis based on the threshold value of the coefficient of(More)