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. 09, 2005
Filed:
May. 15, 2002
Masao Kishimoto, Tokyo, JP;
Ryohei Motegi, Tokyo, JP;
Yukihiko Suzuki, Tokyo, JP;
Hiroshi Iwabuchi, Tokyo, JP;
Masao Kishimoto, Tokyo, JP;
Ryohei Motegi, Tokyo, JP;
Yukihiko Suzuki, Tokyo, JP;
Hiroshi Iwabuchi, Tokyo, JP;
Tokimec, Inc., Tokyo, JP;
Abstract
The present invention provides a small, low power consumption ultrasonic flow velocity meter. The burst signal generation sectiongenerates two kinds of burst signals with a phase difference and sends these burst signals to a pair of transmission/reception ultrasonic transducersandlocated on the upstream side and downstream side of the conduit to be measuredUpon reception of the corresponding burst signals, the pair of the transmission/reception ultrasonic transducersandconvert the burst signals, send ultrasonic waves with a phase difference to the conduit to be measuredreceive the ultrasonic wave sent by the other transmission/reception ultrasonic transducer and propagated through the conduit to be measured and convert the ultrasonic waves to received signals. These received signals are binarized through the binarization circuitsand, exclusive-ORed by the exclusive-OR circuitand converted to a phase difference signal indicating a phase difference and the flow velocity of the conduit to be measuredis measured based on this phase difference signal.