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:
Aug. 19, 2014
Filed:
Jul. 05, 2012
Andy Peczalski, Eden Prarie, MN (US);
Brian Krafthefer, Stillwater, MN (US);
Andy Peczalski, Eden Prarie, MN (US);
Brian Krafthefer, Stillwater, MN (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A flow sensor includes a plurality of ultrasonic transceivers and signal processing circuitry. The transceivers are coupled to a portion of the outer surface of a duct, and each is configured to transmit ultrasonic waves into a fluid, receive ultrasonic waves, and supply sensor signals representative of the received ultrasonic waves. The signal processing circuitry is configured to supply separate excitation signals to each of the ultrasonic transceivers, receive the sensor signals supplied by each of the ultrasonic transceivers, and generate, in response to the sensor signals, a flow signal representative of fluid flow in the flow passage. Each of the excitation signals has a different phase, such that the ultrasonic waves transmitted by each of the ultrasonic transceivers at least selectively combine to propagate in an adjustable direction relative to the flow direction.