Abstract Based on the tungsten steel probe and PVDF piezoelectric film material, a new sensor was designed and developed for focused ultrasound measurement. At the same time, the physical model of the sensor was established through theoretical analysis and finite element analysis, and the internal acoustic field and reflection phenomenon of the sensor were simulated to obtain the waveform of the output from the sensor and its amplitude. Finally, the sensor developed was used to detect the acoustic pressure and acoustic intensity in the focal area of the focusing transducer, and the results were compared with the results based on theoretical simulation. Within the acoustical power range of 10W, the feasibility and reliability of the new sensor as well as its measurement theory and method were proved for focused ultrasound measurement. The new reflection probe sensor will provide a new method for the measurement of high intensity focused ultrasonic field.
XU Ao-xuan,CAO Yong-gang,ZHENG Hui-feng, et al. Design and Methodology Research of a Sensor Based on Reflection Probe for Focused Ultrasonic Measurement[J]. Acta Metrologica Sinica, 2021, 42(2): 204-212.
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2021, Vol. 42 
