Sensor device
US8966991B2 · kind B2 · utility
4Cited by
5References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2012 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Jun 22, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49117
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for sensing strain or stress includes a body including magnetic shape-memory alloy (MSMA) material, having a first axis. A first drive coil and first sensor coil are wound around the body about the first axis. The drive coil is coupled to a power source and configured to generate an alternating magnetic field on the body. The first sensor coil is configured to detect changes in inductance of the body due to changes in magnetic permeability of the body with deformation thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.