Impedance-based measurement device with a two-dimensional array of coils
US9804111B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Jan 14, 2013 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Jul 8, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L21/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The device for the impedance-based probing of materials described herein comprises a two-dimensional array of coils (1) and a measurement unit (4) adapted to determine, for each coil (1), a parameter indicative of its impedance. A pulse generator (3) is able to generate current pulses in each coil (1). The circuitry drives and senses the coil array through row and column lines (rp1 . . . rpN1, cp1 . . . cpN2, c21 . . . csN2) in order to minimize the number of required components. The device can, in particular, be used for probing concrete.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.