Page 118 - 201901

第 38 卷 第 1 期 Vol. 38, No. 1
2019 年 1 月 Journal of Applied Acoustics January, 2019

⋄ 研究报告 ⋄

基于NI ELVIS的超声换能器参数测量系统设计

王 彦 赵洪亮 †

(山东科技大学 青岛 266590)

摘要 为了满足超声换能器快速筛选的要求，在对超声换能器参数导纳圆法测量原理进行分析的基础上，利
用 NI ELVIS 平台搭建了一种结构简单的超声换能器参数测量系统。采用点频法实现高精度、快速的导纳测
量，采用最小二乘法拟合得到导纳圆，进而完成超声换能器诸参数的计算。基于 LabVIEW 软件平台编写了相
应的软件系统。针对 40 kHz 超声换能器的测试表明，所设计的超声换能器参数测量系统精度高、处理速度快，
且结构简单、便于使用。
关键词 超声换能器参数，导纳圆，NI ELVIS，点频法，最小二乘法
中图法分类号: TB52+7 文献标识码: A 文章编号: 1000-310X(2019)01-0114-06
DOI: 10.11684/j.issn.1000-310X.2019.01.015

Design of ultrasonic transducer parameter measurement system based on

NI ELVIS

WANG Yan ZHAO Hongliang

(School of Electrical and Automation Engineering, Qingdao 266590, China)

Abstract In order to meet the requirements of ultrasonic transducer rapid screening, based on the analysis
of ultrasonic transducer parameter admittance circle measurement principle, a simple structure ultrasonic
transducer parameter measurement system was built by NI ELVIS platform. The improved point frequency
method is used to realize high-precision and fast admittance measurement. The admittance circle is obtained
by least squares fitting, and the parameters of the ultrasonic transducer are calculated. The corresponding
software system was written based on the LabVIEW software platform. The test of 40 kHz ultrasonic transducer
shows that the ultrasonic transducer parameter measurement system designed in this paper has high precision,
fast processing speed, simple structure and easy to use.
Key words Ultrasonic transducer parameters, Admittance circle, NI ELVIS, Point frequency method, Least
square

2018-09-03 收稿; 2018-10-17 定稿
作者简介: 王彦 (1994- ), 女, 山东莱芜人, 硕士研究生, 研究方向: 电力系统运行与控制。
通讯作者 E-mail: zhl6401@126.com
†