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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Murata, Y. Toda, H. Tamura, Y. Koyama, K. |
| Copyright Year | 1998 |
| Description | Author affiliation: Fac. of Syst. Eng., Wakayama Univ., Japan (Murata, Y.) |
| Abstract | In order to measure velocity vector of moving object in water, we have developed a new vector velocimetry using ultrasound. Velocity vector was measured by real-time ultrasonic imaging using M-sequence encoding array transducer. When this array transducer was applied to ultrasonic imaging, a cross section image was obtained by a transmitting and receiving process. In experiment, we tried to measure the two dimensional velocity vector of a wire target moving at a constant velocity of 10.0 mm/s and at a constant angle of 45/spl deg/ away from the transducer surface. An ultrasonic pulse was transmitted with a constant interval time of 10.0 ms, and We obtained ultrasonic images of 16. The system was operated at the frequency of 2.5 MHz. Images at each acquisition were reconstructed by correlation method. The velocity vector was calculated by the trajectory of target in each image. In conclusion, it was found that the velocity vector of the target be measured with accuracy 4% by the developed vector velocimetry. |
| Starting Page | 763 |
| Ending Page | 766 |
| File Size | 220331 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780340957 |
| ISSN | 10510117 |
| DOI | 10.1109/ULTSYM.1998.762259 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1998-10-05 |
| Publisher Place | Japan |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Ultrasonic imaging Velocity measurement Ultrasonic variables measurement Ultrasonic transducer arrays Ultrasonic transducers Encoding Wire Surface reconstruction Frequency Image reconstruction |
| Content Type | Text |
| Resource Type | Article |
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