Ultrasonic pulse Doppler blood flow meter with provision to create ultrasonic test waves which, when reflected from a stationary object, result in echoes similar to those produced by a moving object

1986 ◽  
Vol 79 (5) ◽  
pp. 1640-1640
Author(s):  
Toshio Shirasaka
Keyword(s):  
Blood Flow ◽  
Ultrasonic Pulse ◽  
Ultrasonic Test ◽  
Moving Object ◽  
Stationary Object ◽  
Flow Meter ◽  
Pulse Doppler

Ultrasonic pulse-Doppler flow meter application for hydraulic power plants

2008 ◽  
Vol 19 (3-4) ◽  
pp. 155-162 ◽  
Author(s):  
Kenichi Tezuka ◽  
Michitsugu Mori ◽  
Takeshi Suzuki ◽  
Toshimasa Kanamine
Keyword(s):  
Power Plants ◽  
Ultrasonic Pulse ◽  
Flow Meter ◽  
Hydraulic Power ◽  
Doppler Flow ◽  
Pulse Doppler

scholarly journals The relationship between azygos blood flow and portalsplenic blood flow measured by ultrasonic pulse Doppler method.

Kanzo ◽  
1988 ◽  
Vol 29 (11) ◽  
pp. 1496-1501
Author(s):  
Kazuo NOTSUMATA ◽  
Mitsuhiro TERADA ◽  
Masashi UNOURA ◽  
Ken-ichi KOBAYASHI ◽  
Nobu HATTORI ◽  
...  
Keyword(s):  
Blood Flow ◽  
Ultrasonic Pulse ◽  
Doppler Method ◽  
Pulse Doppler ◽  
The Relationship

Measurements of single-phase and two-phase flows in a vertical pipe using ultrasonic pulse Doppler method and ultrasonic time-domain cross-correlation method

2013 ◽  
Vol 35 (3) ◽  
Author(s):  
Tat Thang Nguyen ◽  
Hiroshige Kikura ◽  
Ngoc Hai Duong ◽  
Hideki Murakawa ◽  
Nobuyoshi Tsuzuki
Keyword(s):  
Time Domain ◽  
Cross Correlation ◽  
Single Phase ◽  
Ultrasonic Pulse ◽  
Phase Flow ◽  
Beam Diameter ◽  
Vertical Pipe ◽  
Two Phase ◽  
Ultrasonic Time ◽  
Pulse Doppler

Ultrasonic Velocity Profile (UVP) method for measurement of single-phase and two-phase flow in a vertical pipe has recently been developed in the Laboratory for industrial and Environmental Fluid Dynamics, Institute of Mechanics, VAST. The signal processings of the UVP method include the ultrasonic pulse Doppler method (UDM)and the ultrasonic time-domain cross-correlation (UTDC) method. For two-phase flow, simultaneous measurements of both liquid and gas are enabled by using a multi-wave ultrasonic transducer (multi-wave TDX). The multi-wave TDX is able to emit and receive ultrasound of two different center frequencies of 2 MHz and 8 MHz at the same time and position. 2 MHz frequency with beam diameter 10 mm is exploited for measurement of gas. 8 MHz one with beam diameter 3 mm is used for liquid. Measurements have been carried out for laminar and turbulent single-phase flows and bubbly counter-current two-phase flows in two flow loops using two vertical pipes of 26 mm inner diameter (I.D.) and 50 mm I.D. respectively. Based on the measured results, assessment of each method is clarified. Applicability of each method for different conditions of pipe flow has been tested. Suggestions for application of the two methods have been recommended.

An Electromagnetic Blood Flow Meter

1949 ◽  
Vol 20 (12) ◽  
pp. 951-954 ◽  
Author(s):  
John W. Clark ◽  
James E. Randall
Keyword(s):  
Blood Flow ◽  
Flow Meter

scholarly journals General Moving Object Localization from a Single Flying Camera

2020 ◽  
Vol 10 (19) ◽  
pp. 6945
Author(s):  
Kin-Choong Yow ◽  
Insu Kim
Keyword(s):  
Prior Information ◽  
State Of The Art ◽  
Image Sequences ◽  
Specific Pattern ◽  
Visual Surveillance ◽  
Moving Object ◽  
Object Localization ◽  
Stationary Object ◽  
Open Spaces ◽  
Moving Camera

Object localization is an important task in the visual surveillance of scenes, and it has important applications in locating personnel and/or equipment in large open spaces such as a farm or a mine. Traditionally, object localization can be performed using the technique of stereo vision: using two fixed cameras for a moving object, or using a single moving camera for a stationary object. This research addresses the problem of determining the location of a moving object using only a single moving camera, and it does not make use of any prior information on the type of object nor the size of the object. Our technique makes use of a single camera mounted on a quadrotor drone, which flies in a specific pattern relative to the object in order to remove the depth ambiguity associated with their relative motion. In our previous work, we showed that with three images, we can recover the location of an object moving parallel to the direction of motion of the camera. In this research, we find that with four images, we can recover the location of an object moving linearly in an arbitrary direction. We evaluated our algorithm on over 70 image sequences of objects moving in various directions, and the results showed a much smaller depth error rate (less than 8.0% typically) than other state-of-the-art algorithms.

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