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Construction of Ultrasonic Power Measurement System and Its Performance Evaluation  

Jho Moon Jae (한국표준과학연구원 물리표준부 음향진동그룹)
Kim Yong Tae (한국표준과학연구원 물리표준부 음향진동그룹)
Yun Yong Hyeon (한국표준과학연구원 물리표준부 음향진동그룹)
Jung Suug Soo (한국표준과학연구원 물리표준부 음향진동그룹)
Publication Information
The Journal of the Acoustical Society of Korea / v.24, no.8, 2005 , pp. 431-440 More about this Journal
Abstract
The precise measurement of ultrasonic power is important to the qualify assurance and the safety of medical ultrasonic equipments In the Present work, a brier theory was introduced to determine the ultrasonic Power from the time valving balance-indication due to the radiation force acting on an absorbing target and/or other causes such as buoyancy during the repetition of on/off behavior of ultrasonic irradiation. The developed automated system measuring the ultrasonic power was described in detail with the precise mechanical alignment tool , the electric signal generation network, the control and measurement network and the appropriate procedure. The ultrasonic power measured by the developed system was compared to the reference data calibrated by the other national metrology institute at 1 MHz, 5 MHz, 10 MHz, and 15 MHz over the range 10 mW to 10 W. Their relative differences are within $5\%$.
Keywords
Ultrasonic Power; Radiation force; Absorbing target; Ultrasonic attenuation; Sound speed;
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