Wireless vibrating strain gauge for smart civil structures
US7591187B2 · kind B2 · utility
26Cited by
25References
87Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 10, 2006 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Nov 18, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B17/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gauge includes a wire, a housing, a coil, a processor, and a power supply. The wire is mounted in the housing to vibrate at a natural frequency. The coil is magnetically coupled to the wire. The processor is connected to provide a digital signal to the coil and the processor is further connected to detect when the wire is vibrating. An embodiment provides an efficient technique to excite the wire into vibration. Another embodiment enables long term operation from a small battery. Another embodiment enables wireless communications to be used, eliminating the need for cable runs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.