Despite the fact that wireless sensor is needed to be activated in order to do efficient and continuous management, batteries are limited on their lives in case of wireless sensor. This paper suggests that the energy harvester model can be used within low frequency and examined using single crystal PMN-PT material which is definitely good at the efficiency of piezoelectric in order to maximize the output power. And the possibility of wireless sensor node power supply is verified by using an acceleration data of cable hangers of YoungJong Grand Bridge.

• 최동호(한양대학교 건설환경공학과 교수, 공학박사) | Choi, Dong Ho
• 박완순(한양대학교 건설환경공학과 박사후과정, 공학박사) | Park, Wan Soon
• 정진우(한양대학교 건설환경공학과 박사과정) | Jung, Jin Woo