基于C型管的FBG压力传感器特性研究  

FBG Pressure Sensor Based on the C-type Bourdon Tube

作　　者：蒋熙馨[1] 周祖德[1] 

机构地区：[1]武汉理工大学机电学院,武汉430070

出　　处：《武汉理工大学学报》2009年第24期46-49,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50775167)

摘　　要：基于C型弹簧管结构，实现了光纤Bragg光栅（FBG）压力传感器的测量。用管内过剩压力使弹性管的表面产生的应力对FBG反射波长进行调谐。得到了FBG反射波长变化对应于压力的线性关系。在0～4MPa的压力范围内。FBG反射波长随压力的变化呈线性变化，且压力的传感灵敏度达到0．0955nm／MPa，给出了进一步改善传感器压力传感特性和热稳定性的方法。Based on the structure of the C-type Bourdon Tube, a optical Bragg fiber grating pressure has been presented. The tuning of the FBG reflected wave length is carried out by using the excess pressure in the C-type Bourdon tube for making the surface of the said tube produce stress. The linear rdationship of FBG reflected wavelength variation against the pressure has been obtained. In a prexsure range of 0--4 MPa, the relationship between FBG reflected wave length and pressure is a linear characteristic, with the sensitivity of the pressure reaching 0. 0955 nm/MPa, Finally the methods how to improve the static pressure sensing characteristic and heat stability are presented.

关 键 词：光纤传感器 光纤Bragg光栅(FBG) 压力传感器 C型管 

分 类 号：TP377.9[自动化与计算机技术—计算机系统结构]