A calibration methodology of ultrasonic transducers: Evaluation of spatial propagation characteristics of pulse-echo
A calibration methodology of ultrasonic transducers: Evaluation of spatial propagation characteristics of pulse-echo
复制标题
超声换能器的校准方法：脉冲回波空间传播特性的评估
DOI：
10.1016/j.measurement.2023.112783
复制
发表时间：
2023
期刊：
影响因子：
5.6
通讯作者：
Furuichi Noriyuki
中科院分区：
文献类型：
--
作者：
Yoshida Taiki;Wada Sanehiro;Furuichi Noriyuki
本研究旨在发展一种新的方法，光学和超声测量相结合的系统，用于评估超声脉冲回波的空间传播特性。该系统可以记录脉冲回波轮廓，除了在近场超声聚焦不好。利用自行开发的立体视觉系统作为参考，测量球形颗粒在水中分散的三维坐标。超声脉冲回波被识别为立体视觉系统获得的三维坐标。与使用水听器传感器的传统方法相比，获取水中随机分散颗粒的大量数据在三维空间中提供了更高的数据密度。该方法实现了在O（0. 0 1 mm）。在三维空间中的脉冲回波波形，而不是传统方法的辐射声压场，可以转换成数据库的事实是至关重要的。
This study aims to develop a novel methodology, a combined system of optical and ultrasonic measurements, for evaluating spatial propagation characteristics of ultrasonic pulse-echo. The system can record pulse-echo profiles except in the near field where the ultrasound is not well-focused. An in-house-developed stereo-vision system is utilized as a reference to measure the three-dimensional coordinates in spherical particle dispersion in water. Ultrasonic pulse-echo from the particles is identified to the three-dimensional coordinates obtained by the stereo-vision system. Acquiring numerous data of randomly-dispersed particles in water gives higher data density in three-dimensional space than the conventional method using a hydrophone sensor. The method realizes a highly-accurate evaluation of the tilt angle of the pulse emission against the transducer casing axis within O (0. 0 1∘). The fact that the pulse-echo waveform in the three-dimensional space, rather than the radiation sound pressure field of the conventional method, can be converted into a database is crucial.