New, high-sensitivity, hybrid magnetostrictive/electroactive magnetic field sensors

被引：55

作者：

Huang, JK ^{[1
]}

O'Handley, RC ^{[1
]}

Bono, D ^{[1
]}

机构：

[1] Ferro Solut Inc, Roslindale, MA 02131 USA

来源：

SMART STRUCTURES AND MATERIALS 2003: SMART SENSOR TECHNOLOGY AND MEASUREMENT SYSTEMS | 2003年 / 5050卷

关键词：

maunetic field sensor; magnetostriction piezoelectric; energy harvesting; vibration energy scavenger;

D O I：

10.1117/12.484257

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A recently developed class of magnetic field sensors is based on the action of a macnetostrictive material on a piezoelectric material. Described here is a significant improvement on this class, a passive magnetic field sensor made of laers of Terfenol-D {Fe-2(DY0.7Tb0.3)} magnetostrictive material and ceramic PZT-5. These devices show a large macynetic field sensitivity of order 6 kV/T. Application of this device to harvesting vibration energy indicates chat more than 10 mW of electrical power can be harvested using a Terfenol-D/PZT/ Terfenol-D sandwich (volume = 1 cm(3)) from 30 Hz vibrations having an acceleration of 0.5 g.

引用

页码：229 / 237

页数：9

共 19 条

[1] Self-powered signal processing using vibration-based power generation [J].