论文摘要
压力容器是化工生产的重要因素。压力是压力容器的一个重要参数,如压力容器的压力超过额定值时是不安全的,必须对其进行测量和控制。用来测量气体或液体压力的工业自动化仪表称压力表或压力计。在诸多压力测量仪表中,由于机械式压力表的弹性敏感元件具有很高的机械强度以及生产方便等特性,使得机械式压力表得到越来越广泛的应用。光纤Bragg光栅传感器用波长编码,而波长这个绝对参量不受光源功率的波动及连接或耦合损耗的影响,传感信号可长距离传输且不受电磁信号的干扰。特别之处还在于很容易在一根光纤中连续制作多个光栅,所制得的光栅阵列轻巧柔软,与时分复用和波分复用技术相结合,对温度、压力、应变等实现多点监测。研究表明,光纤Bragg光栅传感特性稳定,是理想的压力传感元件。只有对光纤Bragg光栅传感探头进行合理的设计,才能使其成为能满足工程实际要求的传感器。因此对光纤Bragg光栅压力传感探头的设计和传感器的封装方法的研究对于其走向实际应用具有重要的意义。针对于石化行业中的中低量程压力的测量,本人设计了一种盲管式光纤Bragg光栅中低压传感器。建立传感模型,通过对比选择了金属弹性钛筒弹性元件作为光纤Bragg光栅压力传感器的换能结构,并进行可行性论证。通过理论分析,得出该压力传感器的灵敏度为42.61pm/MPa和该压力传感器的分辨率为0.0235pm/MPa。在完成对相应各元件的加工和封装后,在0-3.OMPa范围内进行了压力加载和卸载的实验。实验中通过光纤光栅解调仪监测光纤Bragg光栅波长的漂移,并记录下实验数据。最后,通过对实验数据进行处理和分析,定量的研究了该光纤Bragg光栅传感.器的中心反射波长与应变之间的线性度,并得出了其压力灵敏度23.2pm/MPa,分辨率为0.0431MPa/pm。
论文目录
相关论文文献
- [1].Testing the Universality of Free Fall by Comparing the Atoms in Different Hyperfine States with Bragg Diffraction[J]. Chinese Physics Letters 2020(04)
- [2].Theoretical Simulation of the Temporal Behavior of Bragg Diffraction Derived from Lattice Deformation[J]. Chinese Physics Letters 2020(07)
- [3].固定于水面的多个半圆形结构物的水波Bragg反射[J]. 上海交通大学学报 2019(09)
- [4].基于光纤Bragg光栅传感器的车辆载重动态检测系统的初步开发[J]. 通讯世界 2016(24)
- [5].Spectral Beam Combining of Fiber Lasers by Using Reflecting Volume Bragg Gratings[J]. Chinese Physics Letters 2016(12)
- [6].Proton Bragg Peak Irradiation Experiment of Components for Aerospace[J]. Annual Report of China Institute of Atomic Energy 2019(00)
- [7].光纤Bragg光栅振动传感器的标定与不确定度分析[J]. 机械科学与技术 2020(11)
- [8].BRIGHT:the three-dimensional X-ray crystal Bragg diffraction code[J]. Nuclear Science and Techniques 2019(03)
- [9].Periodic structural defects in Bragg gratings and their application in multiwavelength devices[J]. Photonics Research 2016(02)
- [10].Wave Power Focusing due to the Bragg Resonance[J]. China Ocean Engineering 2017(04)
- [11].基于光纤Bragg光栅传感器的现役高桩码头结构健康监测系统设计与实施[J]. 水道港口 2016(02)
- [12].Numerical Simulation of Bragg Reflection Based on Linear Waves Propagation over A Series of Rectangular Seabed[J]. China Ocean Engineering 2008(01)
- [13].Design of a Solid-Core Large-Mode-Area Bragg Fiber[J]. Chinese Physics Letters 2015(05)
- [14].An introduction to Bragg diffraction-based cold atom interferometry gravimeter[J]. Instrumentation 2015(04)
- [15].Interrogating a Fiber Bragg Grating Vibration Sensor by Narrow Line Width Light[J]. Journal of Electronic Science and Technology of China 2008(04)
- [16].Demodulation System for Fiber Bragg Grating Sensors Using Digital Filtering Technique[J]. Transactions of Tianjin University 2008(01)
- [17].Modification of Interfacial Performance of Fiber Bragg Grating Embedded in the Composite Materials[J]. Journal of Wuhan University of Technology(Materials Science) 2017(04)
- [18].Bragg reflection in a quantum periodic structure[J]. Chinese Optics Letters 2015(12)
- [19].基于光纤Bragg光栅的采动支承压力分布试验研究[J]. 西安科技大学学报 2016(02)
- [20].低能质子的Bragg曲线测量[J]. 中国原子能科学研究院年报 2017(00)
- [21].Two-dimensional non-spatial filtering based on holographic Bragg gratings[J]. Chinese Physics B 2010(07)
- [22].Fiber Bragg Gratings in Small-Core Ge-Doped Photonic Crystal Fibers[J]. Journal of Electronic Science and Technology of China 2008(04)
- [23].Thermal characteristics of Fabry–Perot cavity based on regenerated fiber Bragg gratings[J]. Chinese Optics Letters 2018(12)
- [24].Damage and recovery of fiber Bragg grating under radiation environment[J]. Chinese Physics B 2018(09)
- [25].光纤Bragg光栅倾角传感器的标定与不确定度分析[J]. 光学技术 2017(03)
- [26].Irradiation effect on strain sensitivity coefficient of strain sensing fiber Bragg gratings[J]. Chinese Physics B 2014(01)
- [27].基于3G的光纤Bragg光栅地层沉降监测系统[J]. 传感器与微系统 2013(09)
- [28].Theoretical analysis of polarization properties for tilted fiber Bragg gratings[J]. Science China(Information Sciences) 2010(02)
- [29].一种基于光纤Bragg光栅传感器的挡土墙变形监测技术[J]. 传感器与微系统 2010(11)
- [30].Mechanism of Bragg Diffraction-Assisted Light Extraction in GaN-based Light-Emitting Diodes Based on a Self-Consistent Model[J]. Communications in Theoretical Physics 2009(09)