基于F-P腔的光纤液位传感器系统设计  

Design of Fiber-optic Liquid Level Sensor System based on F-P Cavity

作　　者：罗云[1] 陆安江[1] 张正平[1] 

机构地区：[1]贵州大学计算机科学与信息学院,贵州贵阳550025

出　　处：《通信技术》2012年第10期18-20,23,共4页Communications Technology

基　　金：贵州省科技厅农业攻关项目(黔科合NY字[2011]3107);贵州省科技厅社发攻关项目(黔科合SY字[2011]3008)

摘　　要：基于法布里-珀罗腔的光纤液位传感器具有成本低、体积小、灵敏度高、稳定可靠等优点,具有广阔的应用前景。基于这些因素,首先介绍了光纤液位传感器的基本原理。为了解决液位高度和方向变化的测量问题,利用条纹计数法和双光路判向法解调光纤液位传感器信号,然后提出了详细的设计方案。最后利用单片机仿真软件对系统进行了仿真,并分析了噪声对系统性能的影响,提出了屏蔽噪声的改进方法。The fiber-optic liquid level sensor based on Fabry-Perot cavity has wide application prospects for its advantages of low cost, small volume, high sensitivity, stability and reliability. Based on these factors, the basic principle of the fiber-optic liquid level sensor is firstly introduced in this paper. In order to solve the height measurement and direction change of liquid level, the design scheme with fringe counting technique and double-light-path direction judgment method is proposed to demodulate the signal of fiber-optic liquid level sensor. Finally simulation on the system with the single-chip simulation software Keil and Proteus is done, the noise effect on the system performance analysed, and the improvement strategy of masking noise proposed.

关 键 词：光纤液位传感器 法布里-珀罗腔 条纹计数法 解调 

分 类 号：TN911.74[电子电信—通信与信息系统]