A POWER HARVESTING SYSTEM CONSISTS OF CROSS-DISTRIBUTING BIMORPHS WITH HIGH REAL POWERDENSITY
The traditional battery gradually cannot play the role of the power source of remote micro-sensors and embedded microelectronic devices due to their rapid development. To power the microelectronics by harvesting the environment vibration energy becomes a popular technology. The piezoelectric energy harvesters are very promising because of their high efficiency. In order to protect the harvesting elements from collision, the safety working space of the harvesting structure should be taken into account of the output power-density. The real output powerdensity is introduced, which considers both piezoelectric body and safety working space. A power harvesting system consists of cross-distributing bimorphs with high real power-density is developed. The structure and working principle are introduced. The differences of working space requirement between the cross-distributing harvester and the traditional one are analyzed. The numerical result shows that the cross-distributing method can greatly improve the real power-density of energy harvesting system.
piezoelectric energy harvester cross-distributing bimorph beam real power-density
Huan XUE Rui GE
Research and Development Center of Wuhan Iron and Steel group Corp., Wuhan 430080 Department of Mech Research and Development Center of Wuhan Iron and Steel group Corp, Wuhan 430080
国际会议
深圳
英文
119-122
2011-12-09（万方平台首次上网日期，不代表论文的发表时间）