Host: ISCIE, SICE, JSME, JSPE, JSASS, SCEJ
Co-host: Technically Cosponsored by 48 Societies and Institutes
Since natural disasters are reported in various regions, an advanced ubiquitous monitoring system for disaster prevention is proposed. The system is developed to detect early disasters of constructions along expressways. Mass low cost sensors are required for monitoring such big constructions. Therefore, acceleration sensors made by MEMS technology are developed for monitoring the deformations of structures such as the landslide of slopes. Each sensor is connected with a node of the ubiquitous network. The nodes are connected each other by wireless correspondence. They organize a communication network, autonomously. A node is connected with the internet. When any change is found, warning signal is sent to the head office and furthermore to the administrators by portable phones. The accuracy of the sensors is investigated. The practical test using twelve nodes are examined for the slope of horizontal length of 100 m and height of 40 m along the expressway, for one year. Power is supplied by a battery (Unit II type) for each node during four months. It is verified that the system is significantly effective for the perspective of disasters.
