Patent · US Active

Method and device for detecting rain on a windshield

US9322952B2 · kind B2 · utility

2Cited by

5References

3Claims

0Family size

Assignee

Hella KGaA Hueck & Co. · DE

Inventors

Thomas Niemann · Delmenhorst, DE
Olaf Lüdtke · Hambergen, DE
Almut Schlarmann · Bremen, DE
Jürgen Palloks · Westerstede, DE
Cevin Czsich · Bremen, DE
Jörg Stürmann · Bremen, DE

Key dates

Filing date	Dec 12, 2012
Grant date	Apr 26, 2016
Priority date	—
Expiry date	Jan 15, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01N2291/02809
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a method for detecting rain on a windshield, whose degree of wetting is determined with at least one sensor value, it is provided that the sensor value is determined piezoelectrically, wherein vibrations on the windshield are detected, which change depending on the degree of wetting or raindrops hitting the windshield. As a result, the entire windshield serves as a detection surface, thereby yielding a high accuracy.

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