摘要
利用微弯传感器和具有硬中心的小位移平膜片设计而成的光纤微弯压力传感器，可以用来测量气体或液体的压力。气体或液体的压力作用在平膜片上，使得平膜片的硬中心产生微小位移，通过微弯传感器使得光纤中传输光产生损耗。检测输出光的变化，经光电转换及放大、运算、调理电路，从而获得压力的大小。本文给出了传感器的基本结构，并研究了其传感机理。该光纤微弯压力传感器能够组成分布式光纤测试系统，具有机械调零、过载保护功能。
A fiber optic microbend pressure sensor employing microbend sensor and small diaplacement diaphragm with hard center is presented in this paper.It can be used to measure the pressure of gas or liquid.When the pressure affects on the diaphragm,the hard center of the diaphragm produces small displacement.Thus the light in the optical fiber through the microbend sensor gets lost.By detecting the variation of the output light and through a series of circuits,the pressure readout is obtained.The basic structure and sensing mechanism are discussed.This sensor can form a distributed fiber optic measuring system and it has the function of zero adjustment and overload protection.
出处
《光纤与电缆及其应用技术》
1999年第1期42-46,共5页
Optical Fiber & Electric Cable and Their Applications
基金
江苏省青年科技基金
航空科技基金
关键词
光纤
压力传感器
微弯传感器
平膜片
Optical fiber Pressure sensor Microbend sensor\ \ \ Diaphragm
