压电石英晶体振荡器谐振频率的稳定性是构建晶体微天平检测平台的前提,环境温度是导致稳定的石英晶体振荡器的频率漂移的主要因素。本文通过理论分析,选用合适晶片、采用差频技术构建特殊的振荡电路,消除了检验检测平台由于环境温度引起的频率漂移,从而提高了微天平的稳定性,使传感器的性能得到明显提高。
The stability of piezoelectric quartz crystal oscillator resonance frequency is to structures the prerequisite of measuring the platform of the crystal microbalance, the environment temperature is the main factor causing the frequency of the high steady quartz crystal oscillator of degree to drift about. Through theoretical analysis, technology structures the special vibration circuit to select the suitable chip for use, adopt difference frequently,caused by environment temperature of the platform and drifted about, thus improved the stability of the microbalance, has made the performance of the sensor obviously improved.