Systems, methods, and apparatus for detecting metallic objects in a predetermined space via inductive kinematic sensing
US10298049B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2016 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Sep 10, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus for detecting a presence of an object is provided. The apparatus includes an inductive sensing coil that is configurable to generate a magnetic field, the inductive sensing coil configured to have an electrical characteristic that is detectable when generating the magnetic field. The apparatus includes an actuator configured to inducing relative motion between the inductive sensing coil and the object while the inductive sensing coil generates the magnetic field. The apparatus includes a controller configured to detect a change in the electrical characteristic, and determine a presence of the object based on the change in the electrical characteristic correlating with the relative motion between the inductive sensing coil and the object. The electrical characteristic includes one or more of an equivalent resistance, an equivalent inductance, an equivalent impedance, and an impulse response of the inductive sensing coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.