Method for operating an ultrasonic sensor device for monitoring an underbody region of a motor vehicle, computer program product, computer-readable storage medium, and ultrasonic sensor device

US12339358B2 · kind B2 · utility

Assignee

• VALEO SCHALTER UND SENSOREN GMBH · DE

Inventors

• Maximilian Poepperl · Kronach, DE
• Felix Becker · Munich, DE

Key dates

• Filing date: Mar 14, 2022
• Grant date: Jun 24, 2025
• Expiry date: Jun 29, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S2015/937
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a method for operating an ultrasonic sensor device (2) for monitoring an underbody region (12) of a motor vehicle (1), wherein ultrasonic signals (U) are emitted into the underbody region (12) by means of at least one ultrasonic sensor (4, 5, 6, 7) of the ultrasonic sensor device (2), and the reflected ultrasonic signals (U) are received and analyzed. After the motor vehicle (1) is parked at a first point in time (t1), a reference measurement curve (13) for the underbody region (12) is generated on the basis of at least one ultrasonic signal (U) and is stored, wherein a measurement region (18) is determined in the reference measurement curve (13) in which the monitoring process of the underbody region (12) is analyzed, and the measurement region (18) is determined on the basis of the decay time (16) of the ultrasonic sensor (4, 5, 6, 7) and a ground reflection (19) on the ground surface (11). The invention additionally relates to a computer program product, a computer-readable storage medium, and an ultrasonic sensor device (2).