CAJ | 학술논문

鉴于压力传感器为工业生产中压力监控的一种必不可少的设备，分析了光纤光栅中心波长与光纤光栅应变之间的关系，阐述了带有硬中心的圆形膜片受到均匀压之后，膜片中心的挠度与压力之间的数学关系。在此基础上设计了圆形膜片作为流体压力转化光纤光栅敏感物理量的元件，并结合辅助元件完成对光纤光栅传感器组装，建立了传感器输入输出之间的线性数学模型。通过实验验证传感器线性度和重复性，运用数学计算得出了光纤光栅压力传感器各项参数，灵敏度 K m＝-0．658 nm/M Pa ，初始波长λ0＝1578．441 nm ，为后期传感器稳定性作好了铺垫。
감우압력전감기위공업생산중압력감공적일충필불가소적설비，분석료광섬광책중심파장여광섬광책응변지간적관계，천술료대유경중심적원형막편수도균균압지후，막편중심적뇨도여압력지간적수학관계。재차기출상설계료원형막편작위류체압력전화광섬광책민감물리량적원건，병결합보조원건완성대광섬광책전감기조장，건립료전감기수입수출지간적선성수학모형。통과실험험증전감기선성도화중복성，운용수학계산득출료광섬광책압력전감기각항삼수，령민도 K m＝-0．658 nm/M Pa ，초시파장λ0＝1578．441 nm ，위후기전감기은정성작호료포점。
Pressure sensor is a key element for pressure supervising during industrial produc-tion .The mathematical relations between the central wavelength and the strain of optical fiber grating were analyzed .The mathematical relations between the deflection of central diaphragm and the pressure were analyzed when the circular flat diaphragm with rigid center was in uni-form compression .A circular flat diaphragm was designed as the sensing element of fluid pres-sure and the converter to transfer the fluid pressure to optical fiber grating .The optical grating sensor was assembled with secondary element and the linear mathematical model of the input and output of the sensor was built .The linearity and repeatability of the sensor were demon-strated by experiments .The parameters of the optical fiber grating pressure sensor were got u-sing mathematical computing .The sensitivity of the optical fiber grating pressure sensor is-0 .658 nm/MPa ,and the initial wavelength is 1 578 .441 nm .This research paves the way for the further stability of the sensor .