Abstract
In this research, we developed the monitoring system to detect the bridge condition and transmit the data to the train passing on the target bridge. The characteristic of the system is to be able to operate only with the power generated from the bridge vibration. In order to achieve this power harvesting technique, the bridge member, the configurations of a piezoelectric device and circuit architecture, which are suitable for the power harvesting, were examined. From these results, we made the prototype monitoring system and verified the operations at the existing bridge. In this verification, the prototype system demonstrated to measure and to transmit the data five times with the power generated from the bridge vibration induced by a running train composed of ten cars, and the train received those transmitted data.
