Ultrasonic transmission and reception device

US9958538B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Karl-Heinz Richter · Weingarten, DE
• Dirk Schmid · Simmozheim, DE
• David Bartylla · Leonberg, DE

Key dates

• Filing date: May 22, 2014
• Grant date: May 1, 2018
• Expiry date: Feb 25, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S15/931
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An ultrasonic transmission and reception device is described. This includes a transmission circuit for generating a transmission signal at its transmission outputs and, an ultrasonic transducer, which is suited for converting electrical signals into sound signals and sound signals into electrical signals, a transformer, the primary side of which is connected to the transmission outputs and of the transmission circuit and the secondary side of which is connected to the ultrasonic transducer, and a reception circuit for processing a received signal present at its reception input. The ultrasonic transmission and reception device is characterized in that the reception input of the reception circuit is connected to the transformer via an additional winding tap of the transformer, the additional winding tap being incorporated into the transformer in such a way that the transformed transmission signal at the reception input of the reception circuit is boosted in its voltage amplitude with a lower gain factor than the transformed transmission signal which excites the ultrasonic transducer.