System and method for induction-based metal detection and high resolution sorting
US10350644B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 2016 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Jan 4, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V8/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for identifying particular items in a stream of items and for deflecting that type of item from the stream to a different destination. In one embodiment, an LC resonant circuit including an array of coils is transversely disposed across the path and resonates in response to passing metallic items, wherein metal detection signals having an amplitude and a phase are generated. A graphical user interface enables user input with respect to an x-y graph defining amplitude-phase delineations and an ejection zone for the type of metallic item. A controller determines, for each generated metal detection signal, whether a corresponding metallic item is the defined type of metallic item and further within the defined ejection zone, and causes one or more ejectors to controllably eject the corresponding metallic item from the stream to a second destination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.