Inductively interrogated passive sensor apparatus
US9506994B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2010 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Oct 3, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor apparatus comprises a first magnetic transducer which in use is positioned on a first side of a barrier and a second magnetic transducer which in use is positioned on a second side of the barrier opposite the first side. The second transducer comprises a magnetic or electrical property which is dependent upon a sensible condition on the second side of the barrier, such as the pressure or temperature on the second side of the barrier. In operation, the first transducer generates a first magnetic field which induces the second transducer to generate a second magnetic field that is dependent upon the magnetic or electrical property of the second transducer. The first transducer detects the second magnetic field and generates a signal which is representative of the sensible condition on the second side of the barrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.