Research on Polymer Fiber Optics Displacement Sensor Based o
发布时间：2023-04-26 01:00
在许多工业和科学系统中,位移或距离测量是定位测量的重要方面。对应于参考点对象的位置变化称为位移。位移传感器的发展对于位置测量系统和其他应用(例如角度测量,应变,压力和许多其他应用)具有很大的帮助。光纤位移传感器是目前研究的前沿课题。目前存在多种基于不同技术和种类的光纤传感器,本文中我们采用聚合物光纤。本文报道了基于聚合物光纤的大范围低成本位移传感器技术。利用聚合物光纤的耦合和弯曲效应原理设计了传感器。光纤的弯曲损失效应在传感应用中具有显著的优势。我们提出了一种基于扭曲宏观弯曲耦合现象的位移传感器。宏观弯曲损耗发生在光纤弯曲过程中,这一点在实验中得到了强调。为了演示POF中宏观弯曲损耗的耦合,对两根光纤进行了扭曲和弯曲的线性位移测量。由于弯曲效应在照明光纤中产生了损耗,在接收光纤中耦合的弯曲损耗则用于位移测量。在所提出的方法中,光纤的运动对应于位移的变化,同时会对光纤的弯曲半径产生影响。观察传感器的向前和向后移动。在向前运动中,弯曲半径变短,产生宏观弯曲损失。而在回程过程中,光纤弯曲半径增大。所设计的传感器检测范围约为150mm,可用于静态、动态和平面进-出的测量。该传感器在0～80mm...
【文章页数】：126 页
【学位级别】：博士
【文章目录】：
ABSTRACT
摘要
Chapter1 Introduction
1.1 Applications of Displacement Sensor
1.1.1 In Structural Health Monitoring
1.1.2 In Petrochemical Industries
1.1.3 Industrial Robots
1.1.4 Hydraulic Cylinder System
1.1.5 In Other System
1.2 Sensing Methods For Displacement Sensor
1.2.1 Conventional& Non-Conventional Sensing Methods
1.2.2 Resistive Type Displacement Sensors
1.2.3 Inductive Type Displacement Sensors
1.2.4 Capacitive Type Displacement Sensors
1.2.5 Ultrasonic Type Displacement Sensors
1.2.6 Magnetic Type Displacement Sensors
1.3 Optical Methods
1.3.1 Optical Beam Deflection Sensing
1.3.2 Optical Encoder Displacement Sensors
1.3.3 Laser Interferometer Displacement Sensors
1.4 Fiber Optical Sensors(FOS)
1.4.1 Fiber Optics Displacement Sensor(FODS)
1.4.2 Polymer Fiber Optics Displacement Sensor
1.4.3 Distributed Fiber Optics Sensor(DFOS)
1.5 Products Of Displacement Sensor
1.5.1 The Principle of The Eddy Currents
1.5.2 The Principle of Capacitive
1.5.3 The Principle of Laser Triangulation
1.5.4 Confocal Principle
Chapter2 The Twisted Macro-bend Coupling& Side-Coupling Phenomena
2.1 Macro-bend Loss& Coupling
2.1.1 Bent Loss
2.1.2 Macro-bend Application
2.1.3 Numerical Analysis Of Macro-bend
2.1.4 Couple-Mode Theory
2.1.5 Twisted Macro-bend Coupling
2.2 Interference
2.2.1 Interference Of Light Rays
2.2.2 The Interferometer
2.2.3 Constructive Interference Of Light Rays
2.3 Conclusion
Chapter3 The Displacement& Angle Measurement
3.1 Displacement Measurement
3.1.1 Background
3.1.2 Visualizations Of Coupled Scattered& Macro-bend Loss
3.1.3 Sensors Design
3.1.4 Experimental Work And Results
3.2 Angle Measurement
3.2.1 Background
3.2.2 Angle Sensor Structure
3.2.3 Experimental Setup
3.3 Conclusion
Chapter4 Multi-Dimensional Displacement Sensing
4.1 Two-Dimensional Sensing
4.1.1 Background
4.1.2 Cascading Of The Tmbc
4.1.3 Two-Dimensional Sensing Structure
4.1.4 2-D Displacement Sensor Experimental Setup
4.2 Three-Dimensional Sensing
4.2.1 Background
4.2.2 Three Dimensional Sensor Structure
4.2.3 Experimental Setup And Results
4.3 The Plane-In-Out Displacement Measurement
4.4 Multiple-Dimensional Displacement And Multiplexing Approach
4.5 Conclusion
Chapter5 An Enlarge Displacement Sensor
5.1 Background
5.1.1 Intensity-Variation Based On The Side-Coupling
5.1.2 Experimental Work& Results
5.2 Conclusion
Chapter6 Conclusion
6.1 Thesis Innovations
6.2 Summary Of Work
6.3 Future Work
References
Publications
Patents
Acknowledgement
本文编号：3801416
【文章页数】：126 页
【学位级别】：博士
【文章目录】：
ABSTRACT
摘要
Chapter1 Introduction
1.1 Applications of Displacement Sensor
1.1.1 In Structural Health Monitoring
1.1.2 In Petrochemical Industries
1.1.3 Industrial Robots
1.1.4 Hydraulic Cylinder System
1.1.5 In Other System
1.2 Sensing Methods For Displacement Sensor
1.2.1 Conventional& Non-Conventional Sensing Methods
1.2.2 Resistive Type Displacement Sensors
1.2.3 Inductive Type Displacement Sensors
1.2.4 Capacitive Type Displacement Sensors
1.2.5 Ultrasonic Type Displacement Sensors
1.2.6 Magnetic Type Displacement Sensors
1.3 Optical Methods
1.3.1 Optical Beam Deflection Sensing
1.3.2 Optical Encoder Displacement Sensors
1.3.3 Laser Interferometer Displacement Sensors
1.4 Fiber Optical Sensors(FOS)
1.4.1 Fiber Optics Displacement Sensor(FODS)
1.4.2 Polymer Fiber Optics Displacement Sensor
1.4.3 Distributed Fiber Optics Sensor(DFOS)
1.5 Products Of Displacement Sensor
1.5.1 The Principle of The Eddy Currents
1.5.2 The Principle of Capacitive
1.5.3 The Principle of Laser Triangulation
1.5.4 Confocal Principle
Chapter2 The Twisted Macro-bend Coupling& Side-Coupling Phenomena
2.1 Macro-bend Loss& Coupling
2.1.1 Bent Loss
2.1.2 Macro-bend Application
2.1.3 Numerical Analysis Of Macro-bend
2.1.4 Couple-Mode Theory
2.1.5 Twisted Macro-bend Coupling
2.2 Interference
2.2.1 Interference Of Light Rays
2.2.2 The Interferometer
2.2.3 Constructive Interference Of Light Rays
2.3 Conclusion
Chapter3 The Displacement& Angle Measurement
3.1 Displacement Measurement
3.1.1 Background
3.1.2 Visualizations Of Coupled Scattered& Macro-bend Loss
3.1.3 Sensors Design
3.1.4 Experimental Work And Results
3.2 Angle Measurement
3.2.1 Background
3.2.2 Angle Sensor Structure
3.2.3 Experimental Setup
3.3 Conclusion
Chapter4 Multi-Dimensional Displacement Sensing
4.1 Two-Dimensional Sensing
4.1.1 Background
4.1.2 Cascading Of The Tmbc
4.1.3 Two-Dimensional Sensing Structure
4.1.4 2-D Displacement Sensor Experimental Setup
4.2 Three-Dimensional Sensing
4.2.1 Background
4.2.2 Three Dimensional Sensor Structure
4.2.3 Experimental Setup And Results
4.3 The Plane-In-Out Displacement Measurement
4.4 Multiple-Dimensional Displacement And Multiplexing Approach
4.5 Conclusion
Chapter5 An Enlarge Displacement Sensor
5.1 Background
5.1.1 Intensity-Variation Based On The Side-Coupling
5.1.2 Experimental Work& Results
5.2 Conclusion
Chapter6 Conclusion
6.1 Thesis Innovations
6.2 Summary Of Work
6.3 Future Work
References
Publications
Patents
Acknowledgement
本文编号：3801416
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