摘要
传统的调频式石英晶体传感器无法区分引起频率变化的两种不同负载效应,介绍一种新型液体中双调制式石英晶体传感器系统,讨论了传感器谐振电路、液体测头结构及采集系统的设计。实验表明,该传感器在液体中3个小时频率稳定度达到±5Hz,幅值达到±2.5mV,液体的高度对传感器输出基本没有影响。
Traditional frequency modulated quartz crystal sensors can not distinguish between the two different loading effects which result in frequency change. This paper presents a new kind of dual modulated quartz crystal sensor system in liquids, and discusses the design of the resonance circuit, liquid sensor head, and the sampling system. The experiment shows that the frequency stability of the sensor can reach Hz, and the amplitude .5 mV within 3 hours. The sensor output is hardly influenced by the liquid height.
出处
《仪表技术与传感器》
CSCD
北大核心
1997年第4期7-9,12,共4页
Instrument Technique and Sensor
关键词
石英晶体传感器
制造
传感器
液体
Quartz Crystal Sensor, Dual Modulation, Rectified Voltage.