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:
Mar. 31, 1998
Filed:
Dec. 06, 1996
Chang Hak Soo, Seoul, KR;
Changmin Co., Ltd., Seoul, KR;
Abstract
A first measurement unit for untrasonically measuring a flow velocity, a river depth, and an ultrasonic velocity is mounted on floating members. The floating members are connected with a travelling unit for automatically travelling a propeller flowmeter which is used in advance, to thereby measure vertical average flow velocities and river depths at a plurality of positions while moving along a river width. The floating members are provided with ultrasonic vibrators in the center thereof for measuring a river depth and an ultrasonic velocity as well as with ultrasortie vibrator pairs for measuring flow velocities. A second measurement unit for measuring an ultrasonic pulse propagation time period has a unit for calculating an ultrasonic velocity, a river depth, a partial flow quantity and an entire flow quantity, and a unit for controlling movements of the floating members and a distance between the ultrasonic vibrators. The second measurement unit is mounted in a flow quantity measurement post, connected to the first measurement unit and a high frequency cable line and supplies electric power to the first measurement unit.