摘要
通过对超声换能器的工作原理分析,设计了一种新型的超声换能器驱动与回波检测电路。驱动电路由功率放大器、脉冲变压器及一定的补偿电路组成;回波检测电路由前置放大器、带通滤波器和自动电平控制电路组成。试验结果显示,此电路性能良好,能明显提高超声换能器的测距范围。
This paper presents a new type of driving and echoes detection circuit for ultrasonic transducers based on the analysis of their working mechanization. The driving circuit consists of a power amplifier, a pulse transformer and a compensation circuit. The echoes detection part is made up of a preamplifier, a band-pass filter and an ALC circuit. The experiment shows that this circuit can improve ultrasonic ranging distance and has good performances than the original ones.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2004年第3期107-111,共5页
Journal of National University of Defense Technology
关键词
超声测距
超声换能器
脉冲变压器
自动电平控制
ultrasonic ranging
ultrasonic transducer
pulse transformer
auto level control
