Patent · US Active

Liquid detection using millimeter-wave radar sensor

US10761187B2 · kind B2 · utility

4Cited by

26References

28Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Avik Santra · Irvine, US
Ashutosh Baheti · Munich, DE
Andreas Dorfner · Munich, DE
Youn Joo Kim · Munich, DE
Raghavendran Vagarappan Ulaganathan · Munich, DE
Thomas Finke · Gilching, DE

Key dates

Filing date	Apr 11, 2018
Grant date	Sep 1, 2020
Priority date	—
Expiry date	Feb 8, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG01S13/60
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A device includes: a millimeter-wave radar sensor circuit configured to generate N virtual channels of sensed data, where N is an integer number greater than one; and a processor configured to: generate a 2D radar image of a surface in a field of view of the millimeter-wave radar sensor circuit based on sensed data from the N virtual channels of sensed data, where the 2D radar image includes azimuth and range information, generate a multi-dimensional data structure based on the 2D radar image using a transform function, compare the multi-dimensional data structure with a reference multi-dimensional data structure, and determine whether liquid is present in the field of view of the millimeter-wave radar sensor circuit based on comparing the multi-dimensional data structure with the reference multi-dimensional data structure.

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