Development ofwireless sensor nodes with self-powered and accumulating modules for bridge vibration monitoring

近年来，无线传感器节点被认为是评估桥梁结构健康的重要工具之一。本研究旨在探讨PZT作为无线传感器节点电源的适用性。从实验室实验中观察到，压电性能取决于结构的应变大小。结果表明，在满足一定要求的情况下，PZT可以作为无线传感器节点的电源。

Recently, a wireless sensor node has been expected as one of important tools to assess the structural health of bridges. An attempt in this study is made to investigate an applicability of PZT for a power source of wireless sensor nodes. From laboratory experiments, it is observed that piezoelectric property depends on the magnitude of strain of the structure. As a result, it was found that PZT can be available as a power source of wireless sensor nodes if some requirements can be satisfied.