Proximity switch and method for operating a proximity switch
US12425025B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 3, 2022 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Jul 5, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/95
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A proximity switch is disclosed. In an embodiment, the proximity switch has a defined detection range and includes an oscillator, an oscillator amplifier, a temperature sensor, a microprocessor and a storage medium. The oscillator generates an alternating magnetic field and changes its oscillation state as a result of a target entering the detection range. The oscillator amplifier is configured to be controllable in an open-loop and closed-loop manner and has at least one amplifier stage. In this embodiment, the at least one amplifier stage has a controllable temperature compensation circuit which is configured to influence the oscillation behaviour of the oscillator based on compensation values received as control data from the microprocessor and/or from the storage medium, depending on a temperature detected by the temperature sensor. The disclosed embodiments also encompass a method for operating a proximity switch with temperature compensation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.