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:
Jun. 03, 2014
Filed:
Apr. 21, 2005
Tobias Lang, Stuttgart, DE;
Tobias Lang, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The present invention relates to an ultrasonic flow sensor equipped with at least one ultrasonic transducer (A, B) for transmitting and receiving ultrasonic signals (A, B) and one receiver unit () that is connected to the ultrasonic transducer (A, B) and detects a zero crossing (N) of the ultrasonic signal (A, B) as a reception time after the ultrasonic signal (A, B) has exceeded a predetermined threshold (SW). The measurement precision of the sensor can be significantly improved if the receiver unit () determines the time of a value characteristic of the ultrasonic signal (A, B) and determines the relative time shift (deltat) of the characteristic value (Amp, T) in relation to the zero crossing (N, N) that is detected as the reception time (t).