Method and device for acoustically sensing an area

US9255991B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Micha Kalbhenn · Ludwigsburg, DE
• Albrecht Klotz · Leonberg, DE
• Juergen Schirmer · Heidelberg, DE
• Thomas Treptow · Leonberg, DE
• Dirk Schmid · Simmozheim, DE
• Nico Bannow · Stuttgart, DE
• Peter Rapps · Karlsruhe, DE
• Tobias Kirchner · Ludwigsburg, DE
• Thomas Dittrich · Süderbrarup, DE
• Michael Schumann · Stuttgart, DE

Key dates

• Filing date: Dec 2, 2011
• Grant date: Feb 9, 2016
• Expiry date: Nov 27, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S2015/935
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for acoustically sensing an area is described. An acoustic transmit pulse is transmitted into the area by an acoustic transducer and a received signal is acquired with the aid of the transducer, in order to receive the transmit pulse reflected back from the area. Within a post-pulse oscillation time of the transducer, which directly follows the emission of the transmit pulse, the actual phase response of the received signal is determined. In the event the actual phase response deviates from a predefined setpoint phase response, an object is detected within the area. Also described is a device for acoustically sensing an area, which is designed to carry out the method.