【作者】 胡亮；

【导师】 余有龙；

【作者基本信息】 暨南大学 ， 光学， 2007， 硕士

【摘要】 本论文在研究单光纤光栅分布式传感的基础上，开发了基于单光纤光栅的扫描干涉解调系统；使用聚合物材料与粘胶剂对光纤埋置技术进行了改进，使用VB软件开发了数据采集及反馈控制程序，初步完成了基于光纤光栅传感网络的智能机械手开发项目的探索工作。论文从以下4个方面报道了所做工作：（1）．开发了基于单光纤光栅传感的扫描干涉解调系统，能够对光栅光程内各点反射光能量进行测量，实现对光栅光程的精确确定；成功对光栅上待测压力的位置与大小进行了判断；并对光栅所受轴向应力进行了测量；（2）．使用Visual Basic软件开发了基于串口通信的数据采集及反馈控制程序，程序可以对解调系统输出的相移值信号进行采集并调用EXCEL表格自动记录，通过对采集到的数据进行分析，实时调整机械手指的动作，达到智能化反馈控制的效果。（3）．对光纤的封装埋置工艺进行了实验研究，通过对多种粘胶剂和聚合物材料性能的实验测试比较，确定了粘结固定光栅所用粘胶剂和用作机械手蒙皮的聚合物材料；并改进了常规的封装方式，成功增强了光纤与封装材料之间的粘结力。（4）．用硅橡胶对马赫-曾德尔干涉仪的传感臂进行涂敷，增加干涉仪压力传感的灵敏度，验证了使用硅橡胶作为封装材料的增敏作用。实验中分别使用宽带和窄带光源，借助光谱仪和光功率计观测干涉谱波长漂移和光谱峰值功率变化，对微小压力进行了测量。当压力改变1.03×10^-4MPa的时候，波长改变约0.02nm，系统传感灵敏度为1.96×10^-4nm／Pa。更多还原

【Abstract】 For the study of distributed sensing, a scanning interferometric demodulation system has been designed on the study on single FBG; improved the skill of fiber embedment by using coupling agent and viscose agent; developed the program of data acquisition and feedback control on Visual Basic. The exploration work of developing smart manipulator based on FBG sensor network was initially finished. The research work will be illustrated from the following four aspects:Firstly, developed a single FBG scanning interferometric demodulation system, it can observed the energy of reflect light of the different point in FBG, and confirmed the optical path of the FBG precisely; identified the position and quantity of pressure on FBG; measured the axial stress on FBG.Secondly, developed the program of data acquisition and feedback control on the basis of serial communication by using Visual Basic, the system can read data automatically and record the data by calling EXCEL. By real-time analyzing the data, the program can send command to the control circuit of the manipulator so that the fingers can adjust their action. It can reach the result of intelligent feedback control.Thirdly, studied the technology of fiber embedment, choosed the viscose agent and polymer materials which were used in bonding FBG and skin of manipulator by camparing several kinds of viscose agent and polymer materials in experiment; improved normal skill of embedment, enhanced the binding power between fiber and coating materials.Fourthly, one arm of the all-fiber Mach-Zehnder interferometer was covered with silicon fiber to increase the sensitivity of pressure sensing. Illumining with a broadband and a narrowband light source, respectively, wavelength- shift can be obtained by observing the variation of the peak position of the interferometric spectrum with an optical spectral analyzer （OSA）. The change of its peak power is measured by using a power-meter. Successfully measured the mini-pressure and increased the accuracy of measurement. When the pressure is changed 1.03×10^-4MPa, the wavelength shifts 0.02nm, the sensitivity of sensing is 1.96×10^-4nm/Pa.更多还原