The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 19, 2021
Filed:
Aug. 08, 2019
Zf Friedrichshafen Ag, Friedrichshafen, DE;
Georg Tenckhoff, Friedrichshafen, DE;
ZF FRIEDRICHSHAFEN AG, Friedrichshafen, DE;
Abstract
A system for measuring a filling level in a container for liquids that can be installed in a vehicle, which comprises a sound conductor, a vibration sensor for measuring a natural frequency of the sound conductor, a sound transmitter, in particular an ultrasound transmitter, for subjecting the sound conductor to sound, a sound receiver for receiving sound from the sound conductor, and an evaluation unit, which has a data connection to the sound transmitter and the sound receiver, wherein the evaluation unit is configured to determine a distance between the sound transmitter and a boundary surface of the liquid, and to evaluate the distance with regard to a filling level of the container, and to evaluate the natural frequency of the sound conductor with regard to a density of the liquid.