Hall switch with adaptive threshold
US10338642B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2016 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Jul 23, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/072
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic device incorporating a magnet and a Hall-effect sensor to determine a location of a portion of the electronic device. The electronic device comprises a magnet mechanically coupled to a first portion of the electronic device and a Hall-effect sensor coupled to a second portion of the electronic device where the first portion and the second portion are moveable with reference to each other and where the Hall-effect sensor receives a magnetic field of the magnet. The device further comprises an electronic stage that outputs a comparison threshold signal based on peak detecting an output of the Hall-effect sensor using a long term adjustment and resetting the long term adjustment to a current output of the Hall-effect sensor in response to a short term adjustment and a switch electronic stage that switches in response to the output of the Hall-effect sensor exceeding the comparison threshold output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.