Patent · US Active

Water insensitive capacitive sensor switch

US11398823B2 · kind B2 · utility

0Cited by

0References

20Claims

0Family size

Assignee

CAPTRON ELECTRONIC GmbH · DE

Inventors

Kilian Hüttenhofer · Munich, DE
Bernhard Christ · Gerolzhofen, DE

Key dates

Filing date	Dec 2, 2021
Grant date	Jul 26, 2022
Priority date	—
Expiry date	Dec 2, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH03K2217/960775
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A sensor switch including a first sensor electrode and a second sensor electrode at least partially surrounding the first sensor electrode. An evaluation and control circuit of the sensor switch is configured to generate a switch output signal if a first sensor electrode attenuation signal indicates a high signal attenuation, a second sensor electrode attenuation signal indicates a low signal attenuation, and a cross-coupling signal from the first to the second electrode indicates a low cross-coupling.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.