Abstract
Sensor Service Grid (SSG) makes it possible to collect soil moisture sensor data from farms distributed in various parts of the world. It is useful for agricultural field manager and crop-soil researchers. SSG is the core system in Sensor Asia Initiative for easy setup and management of sensors. It realizes “sensor plug & play” which cov-ers sensor node installation, registration, calibration equa-tion and other sensor metadata, as well as visualization of processed sensor data. In order to evaluate the efficiency of SSG, a spinach field monitoring system has been setup near Chiang Mai, Thailand which collects soil data includ-ing moisture, temperature and electrical conductivity, to-gether with meteorological observation data. We have con-firmed that the data was accumulated in a SSG server over the Internet, and it was accessible by everyone easily. This system is currently utilized as a practical tool to secure the food safety between agricultural producers in Thailand and consumers in Japan. The real time information can be browsed easily by Japanese consumers using a mobile phone. Moreover, the system is extremely useful to stimu-late researches on application of soil sensors.
