干涉条纹计数法光纤液位传感器应用研究  

The Application Study on Fiber Fabry-Perot Liquid Level Sensor by Using Interference Fringe Counting Technique

作　　者：张志律[1] 高应俊[1] 

机构地区：[1]暨南大学光电工程研究所,广州510632

出　　处：《传感技术学报》2008年第5期781-784,共4页Chinese Journal of Sensors and Actuators

基　　金：教育部科学技术研究重点项目"新型连续型光纤液位传感器研究"资助(104182)

摘　　要：为了提高干涉条纹计数光纤Fabry-Perot腔液位传感器的实用性,在硬件部分,提出双光纤光路判向,减少光路调节的难度;在软件部分,通过半波长检测法降低对应变部件动态范围的要求,提高系统的分辨率,并采用动态取阈值的方法来保证系统长期运行的稳定性。利用Labview软件对输出信号进行优化处理,采用了数字条纹计数法,并构建虚拟仪器系统直观地显示出液位高度的变化。For practical application of optical fiber Fabry-Perot cavity liquid level sensor by using interference fringe counting technique, a hardware direction distinguishing design with double optical fiber channels is proposed; a software based on the Labview is suggested for fringe counting and direction change distinguishing, dynamic threshold setting and half-wavelength fringe counting were used to meet long-term running of sensing; the structure of virtual instrument system is described.

关 键 词：光纤传感器 液位 法布里-泊罗腔 条纹计数法 LABVIEW 

分 类 号：TN25[电子电信—物理电子学]