CAJ | 학술논문

连续超声波束遇到振动物体表面会产生多普勒效应，文中据此设计了超声波测振系统，其主要由超声波发射接收模块、数据采集和信号处理模块等组成。发射探头发出超声波后，接收探头获得由振动物体表面反射的超声波信号，通过数据采集卡转换为数字信号，再采用微分鉴相方法获取原振动信号，实现物体的振动测量。最后，对该超声波测振系统进行了实验，结果证实了该超声波测振系统的有效性。
련속초성파속우도진동물체표면회산생다보륵효응，문중거차설계료초성파측진계통，기주요유초성파발사접수모괴、수거채집화신호처리모괴등조성。발사탐두발출초성파후，접수탐두획득유진동물체표면반사적초성파신호，통과수거채집잡전환위수자신호，재채용미분감상방법획취원진동신호，실현물체적진동측량。최후，대해초성파측진계통진행료실험，결과증실료해초성파측진계통적유효성。
The ultrasonic system was designed for vibration measurement Doppler effect occurring when continuous ultrasonic beam encountered the surface of vibrating object.The system was composed of ultrasonic transmitting and receiving module and sig-nal acquisition,processing and analysis module.The ultrasound was transmitted by the ultrasonic transmitting probe.The ultrasonic signal reflected from the surface was received by the ultrasonic receiving probe and the reflected ultrasonic signal was converted to the digital signal through the data acquisition card.Then the digital signal was processed through differential phase demodulation to obtain the original vibration signal.Finally,the ultrasonic system for vibration measurement was tested,and the validity of the system was confirmed.