Piezoelectric laminate motion sensing apparatus and method
US7071597B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2005 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Jun 16, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/302
Abstract
A motion sensing system utilizing piezoelectric laminates with predetermined surface electrode patterns disposed thereon utilizes a frequency selector to pass motion waves of predetermined frequencies and an electrical circuit for processing the electrical signals for transmission to an activating device for appropriate activation. In particular, the frequency selector is a low frequency bandpass filter for free-fall acceleration wave frequencies. By directing appropriate action, the present invention increases the applicability of the device upon which it is mounted (e.g., for military or other hostile environment use), decreases the possibility of damage, and lengthens its useful life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.