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:
Nov. 25, 2025
Filed:
Jan. 19, 2023
GM Cruise Holdings Llc, San Francisco, CA (US);
Anurup Guha, Sunnyvale, CA (US);
Amanda Lind, Brooklyn, NY (US);
GM CRUISE HOLDINGS LLC, San Francisco, CA (US);
Abstract
Systems and techniques are provided for deicing/defrosting an ultrasonic sensor using frequency tuning. An example method can include determining that a radiation surface of a housing of an acoustic sensor includes a layer of frozen precipitation, wherein the housing contains a transducer configured to emit sound waves through the radiation surface and receive sound waves that are reflected from a target and pass through the radiation surface to the transducer; determining resonance frequency for sound waves that yields a shear stress on an interface between the radiation surface and the layer of frozen precipitation on the radiation surface, wherein the shear stress exceeds an adhesive shear strength of the layer of frozen precipitation; generating the sound waves having the resonance frequency; and removing the layer of frozen precipitation on the radiation surface based on the sound waves having the resonance frequency.