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:
May. 01, 2018
Filed:
Jul. 13, 2010
Maarten Leonardus Christian Brand, Monroeville, PA (US);
Liang Dong, Shanghai, CN;
Juan Du, Shanghai, CN;
Maarten Leonardus Christian Brand, Monroeville, PA (US);
Liang Dong, Shanghai, CN;
Juan Du, Shanghai, CN;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
The invention proposes a system for measuring a resonance frequency of a tube. The system comprises: an oscillating unit () for oscillating the tube at a plurality of oscillation frequencies, respectively; a detecting unit () for detecting a time delay of transmitting a pressure pulse from a first position to a second position in the tube when the tube is oscillated at each oscillation frequency, wherein, when the tube is oscillated at each oscillation frequency in a specific oscillation frequency range of the plurality of oscillation frequencies, the detecting unit () detects a variation of the time delay—a determining unit () for determining a maximal variation of the time delay when the tube is oscillated at the oscillation frequencies in the specific oscillation frequency range; and—an indicating unit () for indicating an oscillation frequency corresponding to the maximal variation of the time delay, being a resonance frequency of the tube.