摘要
基于提高功率超声波电源能量利用率的目的,需要对超声电源和压电换能器元件二者进行阻抗匹配,而现有的针对功率超声换能器的阻抗匹配装置基本依赖进口,且普遍具有操作不直观、灵活性不佳的缺点。为满足制造和维护低成本,操作方便、直观等要求,采用STC89C52系列单片机作为控制电路主控芯片、多重铁氧体磁环线圈作为阻抗变换核心、按键控制的继电器作为阻抗变换档位切换方式,同时采用显示阻抗变档位的显示电路,通过软件编程和模块化电路设计,制作了高功率宽频阻抗匹配装置,较好实现了对功率超声换能器压电元件的阻抗匹配,最高能达到接近100%匹配吸收率。
In order to improve the energy efficiency of ultrasonic power supplies,it is necessary to match the impedance of power sources and piezoelectric transducer elements.However,the existing impedance matching devices for power ultrasonic transducer not only rely on import,but also have the disadvantages of poor operation and flexibility.In order to meet the requirements of low cost,convenient operation and intuitive operation,a STC89C52 series single⁃chip microcomputer is used as the main control chip of the control circuit,a ring ferrite magnetic ring array structure is used as the impedance transformation core,and the relay controlled by the key is used as the mode of impedance shift.At the same time,a display circuit of impedance change is designed.Then through software programming and modular circuit design,a high⁃power broadband impedance matching device is made,which can achieve good impedance matching between power supplies and piezoelectric components.The maximum matching absorptivity of the device is close to 100%.
作者
施浩然
孔淑婷
高桂玲
陈赵江
刘世清
SHI Haoran;KONG Shuting;GAO Guiling;CHEN Zhaojiang;LIU Shiqing(College of Physics and Electronic Information Engineering,Zhejiang Normal University,Jinhua 321004,China)
出处
《电子设计工程》
2021年第21期27-32,共6页
Electronic Design Engineering
基金
国家自然科学基金面上项目(11874327,11874326)
浙江师范大学实验技术开发重点项目(SJ202006)。
关键词
功率超声换能器
压电元件
信号源
阻抗匹配
power ultrasound transducer
piezoelectric component
signal source
impedance matching
作者简介
施浩然(1996-),男,浙江金华人,硕士研究生。研究方向:超声学与压电材料。
