设计了声激励和光激励两种非电学快速测量音叉式石英晶振谐振频率的方法。不同于传统的电激励测量法,在外部激励源激发音 叉振动同时,使用一束探测光把音叉振臂的振动信号转化成光强变化信号,从而避免了在测量中压电效应的使用。在声激励实验中, 对比了不同的声波发生器和有无导声管的激励效果,优化了声波激发位置;在光激励实验中,研究优化了光束激发的位置。

Two rapid non-electronic measurement methods (acoustic and optical excitations) for the determination of quartz-tuning-fork (QTF) resonance frequency were developed. Unlike the traditional measurement, based on the electronic excitation, with the QTF vibration caused by an external excitation source, a detection light beam is used to convert the vibration amplitude of the QTF into the variation of the detection light intensity to avoid the use of piezoelectric effect. In the acoustic excitation experiment, the performance of the different sound generators and sound guide tube was assessed. The excitation position of the sound wave was optimized. In the optical excitation experiment, the excitation position of the light beam was optimized as well.