Patent · US Active

Interference-compensated sensor

US8935128B2 · kind B2 · utility

0Cited by

5References

17Claims

0Family size

Assignees

Mechaless Systems GMBH · DE
ELMOS SEMICONDUCTOR SE · DE

Inventors

Rolf Melcher · Karlsruhe, DE
Erhard Müsch · Werne, DE
Erhard Schweninger · Karlsruhe, DE
Roberto Zawacki · Gondelsheim, DE

Key dates

Filing date	Oct 30, 2009
Grant date	Jan 13, 2015
Priority date	—
Expiry date	Mar 27, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG16Z99/00
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The interference-compensated sensor for detecting an object located in a detection area in a contactless manner, particularly a rain sensor, is provided with a first and a second measuring channel each having a control device and an output, wherein both measuring channels are substantially identical. The sensor further comprises a main subtractor having an output for outputting the difference of the signals at the outputs of the measuring channels. The sensor is provided with a controller unit having an input that is connected to the output of the main subtractor and with an output for outputting a controller signal, by means of which the two measuring channels can be controlled in such a way that the signal at the output of the main subtractor can be controlled to zero. By means of the magnitude of the signal at the output of the controller, it can be determined if an object is located in the detection area.

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