摘要
本从阐述石英谐振器的电特性入手,说明采用+5°Y 切型石英晶片组成的石英测温探头的基本原理和构造。并且根据试验数据,运用最小二乘法的数学原理,找到了这种测温探头的频率——温度特性的拟合曲线函数。由此可见分辨率高,线性好是石英温度传感器的突出特点,而且它的输出是频率信号,易实现远传和数字化测量。为解决航天、航空、石油探测、地震预报等方面微小温差的测量提供了一种方便可靠的测温手段。
To start with expounding the electrical properties of quartz resonator,this article elucidates the basic principles and structure of the quartz temperature-measuring probe composed of +5°Y type quartz crystal shave.And based on the experimental data,applying the mathematical principle of least square method,the frequency of this temperature-measuring probe—a synthetic curve function of the temperature properties has been found.It is thus clear that the quartz temperature transducer is noted for its high resolving power and good linearity.Besides,this kind of transducer gives frequency signals as output,hence it is prone to achieve long- range transmission and digitalized measurement.It also furnishes a convenient and reliable contrivance for measuring the minor temperature differeces encountered in aerospace,oil prospection,earthquack prediction,and other relavant fields.
出处
《中国民航学院学报》
1990年第1期22-30,共9页
Journal of Civil Aviation University of China
关键词
传感器
石英晶体
温差
测量
切片
quartz crystal
shave
synthetic curve
least square method
