摘要
超声测距传感器是由压电换能器及其收、发电路所组成的,其中压电换能器的阻抗特性直接影响着超声测距传感器的性能。为提高超声波回波信号的强度,扩大超声测距传感器的作用距离,对压电换能器的阻抗特性进行了分析与测试,设计了压电换能器的阻抗匹配电路,并进行了实验验证.
Ultrasonic range-finding sensors usually consist of piezoelectric transducers and transmltting/receiving circuits, and their performances are directly affected by the impedance characteristics of the piezoelectric transducers. For the purpose of getting stronger echoes and extending the effective range-finding distance, the impedance characteristics are analyzed and tested in this paper, and the impedance matching circuit is designed and its functions are testified experimentally.
出处
《应用声学》
CSCD
北大核心
2007年第6期357-361,共5页
Journal of Applied Acoustics
关键词
压电换能器
阻抗匹配
超声测距
Piezoelectric transducer, Impedance matching, Ultrasonic range-finding
作者简介
潘仲明（1959-），男，博士，教授，主要研究领域：压电传感与驱动技术和自适应控制技术。通讯联系人Email：Chungmingpan@163．com
祝琴（1982-），女，工学硕士。
