Sensor assembly configured to sense target movement in first direction and insensitive to target movement in second and third directions orthogonal to first direction
US9347764B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 2014 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Jul 4, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2053
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor assembly having a pair of sensors and a pair of sensor targets. Each of the sensors is an eddy current sensor that defines X, Y and Z axes that are orthogonal to one another such that the X-axes are aligned to a movement axis along which a structure is to be moved. The sensor targets are coupled to one another for common movement and are formed of an electrically conductive material that is configured to interact with a respective one of the eddy current sensors to cause the sensors to produce sensor signals that each vary in a distinct manner with movement of the targets parallel to the movement axis. The targets are configured such that their coordinated movement in a direction parallel to the Z-axes as they are moved along the movement axis has no effect on the determined location of the structure. A method is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.