轮辐式光纤光栅压力传感器的设计与实现  

The Design and Realization of Spoke FBG Pressure Sensor

作　　者：罗建花[1] 开桂云[1] 刘波[1] 曹晔[1] 李红民[1] 高宏伟[1] 赵健[1] 张伟刚[1] 董孝义[1] 

机构地区：[1]南开大学现代光学所,天津300071

出　　处：《光子学报》2006年第1期105-108,共4页Acta Photonica Sinica

基　　金：国家科技部863计划项目(2002A313110);天津市科技重大攻关项目(043182011);天津市科委重点基金项目(033800211)

摘　　要：利用光纤光栅作为基本传感元件，设计研制了一种基于轮辐式压力盒装置的新型光纤光栅压力传感器．常温下在0～30KN的范围内，其测量线性度达到99．91％，灵敏度达到22N，且响应速度快．与其它类型的光纤光栅压力传感器相比，轮辐式光纤光栅压力传感器具有更大的测量范围、更高的抗干扰能力，并且由于光纤光栅本身的波分复用特性，可以很方便地构成压力传感网络进行多种物理量、多点的测量．实验表明；本传感系统具有结构简单、操作方便、滞后小、重复性好、结构高度小、重量轻等优点，在桥梁、大厦等超大型建筑以及大型管道等的检测与监测方面将会有更为广阔的应用前景．A novel FBG sensor based on spoke-structure pressure box by utilizing FBG as the element sensing component is presented. Under room temperature, within the range of 0-30KN, its linearity and sensitivity reaches 99.91% and 22 N, respectively. Furthermore, it has excellent repeatability and high response speed. Compared with other FBG sensors, the spoke FBG sensor has wider measurement range and higher interference resistance. In addition, owing to its applicability for WDM systems, sensing networks can be constructed by FBG sensor to measure multi-point and many physical parameters. This research demonstrates that the designed sensing system has the advantages of simple and compact structure, easiness for manufacture, little delay time, good repeatability, light weight, etc. And it will have various applications in the fields of monitoring large buildings such as bridges, mansions and massscale tunnels.

关 键 词：轮辐式 压力传感器 BRAGG光栅 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]