Self‐generation vibration sensor using levitated magnet

AbstractThis paper introduces the self‐generation vibration sensor using levitated magnet. We have verified experimentally and theoretically that this sensor is available in frequencies of 5 to 25 Hz. The frequency response of sensitivity shows the maximal value at certain frequency. These sensitivities obtained 3.9 V/G at 11 Hz for levitated magnet of neodymium and 3.0 V/G at 10 Hz for the magnet of samarium cobalt. © 2008 Wiley Periodicals, Inc. Electr Eng Jpn, 165(2): 1–8, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.20525