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:
Apr. 26, 2022
Filed:
Apr. 04, 2019
Robert Bosch Gmbh, Stuttgart, DE;
Albrecht Klotz, Leonberg, DE;
Andras Roka, Budapest, HU;
Michael Schumann, Stuttgart, DE;
Nandor Podmaniczky, Budapest, HU;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method for monitoring the function of ultrasonic sensors of a vehicle, an ultrasonic sensor of the vehicle emitting ultrasonic signals and receiving back reflected ultrasonic echoes. An instantaneous amplitude of a ground echo received by an ultrasonic sensor and an instantaneous vehicle position are determined. A reference threshold value or information regarding an expected ground echo amplitude is retrieved from a digital map as a function of the instantaneous vehicle position, the digital map being provided by a central unit. The instantaneous amplitude of the received ground echo is compared with a threshold value, a malfunction of the ultrasonic sensors being deduced if the threshold value is undershot and the threshold value being predefined by the reference threshold value or the threshold value being determined based on the information regarding an expected ground echo amplitude.