实验科学与技术2023，Vol.21Issue(5)：23-26,43,5.DOI:10.12179/1672-4550.20220374
声速和声压同步测量实验的设计与实现
Design and Realization of Simultaneous Measurement for Sound Velocity and Sound Pressure
摘要
Abstract
In view of the deficiency of paying more attention to time(phase)and ignoring signal amplitude in the sound velocity measurement experiment,a signal measurement device was built in the water tank relying on the commonly used underwater acoustic detection equipment.The time difference and the peak value of voltage were obtained by oscilloscope,the sound velocity in water was calculated based on the measurement principle of time difference method,and the electroacoustic conversion was carried out to realize the synchronous measurement of sound velocity and sound pressure.The relative error between sound velocity calculation and theoretical sound velocity in pure water was 2.0％,and the relative error between sound pressure level calculation and theoretical sound propagation of spherical wave was about 6.0％.The experimental design deepens the understanding of abstract concepts such as sound pressure and sensitivity,and trains the students'ability to use Excel for data processing.关键词
声速/声压/灵敏度/脉冲串Key words
sound speed/sound pressure/sensitivity/burst分类
数理科学引用本文复制引用
李冬,魏波,许岩,于砚廷,何传林..声速和声压同步测量实验的设计与实现[J].实验科学与技术,2023,21(5):23-26,43,5.基金项目
国家自然科学基金(62171245) （62171245）
齐鲁工业大学校级教研项目科教融合专项(2020kjzx03,2020kjzx06). （2020kjzx03,2020kjzx06）
