| 陈锦灵,王月兵,赵鹏,邢广振,李荣基.球壳换能器电声效率测量方法研究及声场特性分析[J].,2023,42(1):138-144 |
| 球壳换能器电声效率测量方法研究及声场特性分析 |
| Research on measurement method of electroacoustic efficiency of spherical shell transducer and character analysis for acoustic field |
| 投稿时间：2021-11-30 修订日期：2022-12-30 |
| 中文摘要: |
| 在高强度聚焦超声治疗系统中，换能器的电声效率是治疗剂量控制中的重要参数，同时其在焦域附近的声场分布同样重要。本研究以球壳聚焦换能器为研究对象，基于辐射力天平法与平面扫描法进行输出声功率的测量，同时测量其激励电功率后计算得到电声效率，并就其声场特性分布以及存在的非线性传播现象进行了简单阐述。两种测量方法测得的电声效率在声学计量的误差允许范围内，实验结果表明两种方法在测量球壳聚焦换能器输出声功率时具备较好的一致性。 |
| 英文摘要: |
| In the high intensity focused ultrasound treatment system, the electroacoustic efficiency of the transducer is an important parameter in the treatment dose control, and its sound field distribution near the focal region is also important. In this study, the 1.12MHz spherical shell focused transducer is taken as the research object. The output acoustic power is measured based on the radiation force balance method and the plane scanning method. At the same time, the electroacoustic efficiency is calculated after measuring the excitation electric power, and its sound field characteristic distribution and nonlinear propagation phenomenon are briefly described. The electroacoustic efficiency measured by the two methods is within the allowable error range of acoustic measurement. The experimental results show that the two methods have good consistency in measuring the output acoustic power of spherical shell focusing transducer. |
| DOI：10.11684/j.issn.1000-310X.2023.01.018 |
| 中文关键词: 球壳聚焦换能器 电声效率 辐射力天平法 平面扫描法 声场特性 |
| 英文关键词: spherical shell focused transducer electroacoustic efficiency radiation force balance planar scanning technique sound field characteristic |
| 基金项目: |
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