Electret type vibration detection system, method of creating external vibration information, method of creating transfer function information regarding external vibration, program for creating external vibration information, and program for creating transfer function information regarding external vibration |
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| 申请号 | US14404926 | 申请日 | 2013-02-28 | 公开(公告)号 | US09964434B2 | 公开(公告)日 | 2018-05-08 |
| 申请人 | OMRON Corporation; Tokyo Institute of Technology; | 发明人 | Tatsuakira Masaki; Shinichi Nakao; Hideshi Nishida; Eiichi Sasaki; Hiroshi Yamaguchi; | ||||
| 摘要 | An electret type vibration detection system has a vibration-powered generator that performs vibration-induced power generation by displacing on a basis of external vibration an electret group formed of a plurality of electrets and an electrode group having a plurality of electrode pairs in a relative movement direction to output a vibration-induced voltage between electrodes of the electrode pair, and a transfer function memory section that stores transfer function information that defines a correlation between a vibration velocity of the external vibration and an output power voltage of the vibration-powered generator in a range of a predetermined frequency included in the external vibration, wherein the transfer function information contains a transfer coefficient set according to each of a plurality of frequencies belonging to the predetermined frequency range to place the vibration velocity of the external vibration and the output power voltage of the vibration-powered generator in a predetermined proportional relationship. | ||||||
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