一种电磁超声传感器的研制  

Development of Electromagnetic Acoustic Transducer

作　　者：庞炜涵 张卫民[1] 高玄怡[2] 陈国龙[1] PANG Wei-han ZHANG Wei-min GAO Xuan-yi CHEN Guo-long(School of Mechanical and Vehicle , Beijing Institute of Technology, Beijing 100081, China School of Information and Electronic, Beijing Institute of Technology, Beijing 100081, China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]北京理工大学信息与电子技术学院,北京100081

出　　处：《仪表技术与传感器》2017年第7期20-23,44,共5页Instrument Technique and Sensor

摘　　要：运用电磁超声检测原理研制了一种电磁超声传感器。为了使激励电源具有多种参数可调、输出功率大等特性,高频脉冲电源使用UCC3895作为信号源,IR2110作为全桥可逆电路驱动芯片。换能器结构采用永磁式磁铁与回折型线圈组合。利用Matlab绘制了铝板中兰姆波频散曲线,通过选取合适的频厚积从而在铝板中激发特定模式的超声波。通过实验证明了该传感器在铝板中能够很好地激发出超声波并且能够接收到信号。A kind of electromagnetic acoustic transducer was developed.The exciting source has characteristics such as multi- ple adjustable and high output power by using UCC3895 for signal source.IR2110 is used for the driver IC of H-bridge inverter. The transducer use the combination of permanent magnet and serpentine coil.Lamb wave dispersion craves is drawn by MATLAB, from which could find the proper frequency-thickness. Experimental resuhs shows that the electromagnetic ac, oustic transducer have good performance in exciting ultrasonic and receiving signal.

关 键 词：电磁超声 全桥逆变 UCC3895 频散曲线 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]