摘要
基于光杠杆原理直观演示超声传感器工作频率的方法,定性应用在超声波在空气中传播速度的测量实验中,也可以进一步定量测量和计算,应用在其他微小距离的测量上.
Based on the optical lever principle, an approach to visually demonstrate the working frequency of ultrasonic sensors is applied qualitatively in the experiment of measuring the propagation velocity of ultrasonic wave in the air. This method may also be applied in the measurement of other micro-distance with further quantitative calculations.
出处
《物理与工程》
2013年第2期42-44,共3页
Physics and Engineering
关键词
超声波换能器
工作频率
光杠杆
ultrasonic transducer
operating frequency
optical lever
