①光纤光栅传感器的研发及光纤光栅应变传递理论
光纤光栅传感器的开发：提出了一种光纤光栅应变传感器的封装方法；研制开发了毛细钢管封装和两端夹持式封装的光纤光栅应变传感器、金属管式增敏及无增敏型光纤光栅温度传感器及拉杆式大位移传感器和微位移传感器；提出了埋入式光纤光栅应变传递理论，推导出非轴向力作用下光纤光栅传感器的平均应变传递率；引入基体弹性模量，对基体结构和光纤光栅传感器之间的应变传递关系进行了研究，将应变传递理论延伸到低弹性模量基体结构中，使光纤光栅传感器应变传递理论适用于各种弹性模量基体结构的应变测量。
A packaging method of FBG strain sensor is put forward to realize the enhanced and reduced strain sensitivity. The FBG temperature sensors with the enhanced and non-enhanced sensitivity are invented to measure temperature variation. A strain transfer theory for embedded fiber sensor was developed. A simple strain transfer model is developed for evaluating the interaction between the surrounding matrix and a length of optical fiber under non-axial stress. An advanced strain transfer theory of embedded fiber sensor, which takes into account the Young’s modulus of host material, was developed to extend the theory to different stiffness materials.
短标距光纤光栅应变传感器 长标距光纤光栅应变传感器 光纤光栅温度传感器
The short gauge FBG strain sensor The long gauge FBG strain sensor
The FBG temperature sensor
光纤传感器纤芯内的轴向应变沿长度分布图及平均应变传递率实验结果
Normal strain distribution along fiber length and experimental data for avg. strain transfer rate.
②传感器布置方法和损伤识别的研究
在传感器的布置方面，阐明了有效独立法的物理意义，揭示了有效独立法和模态动能法在迭代情况下的一致性。提出通过对模态矩阵进行正交三角分解，快速计算有效独立法系数的方法。分析了基于H¥范数的传感器布设方法，揭示了与传统的模态分量加和法之间的关系。提出基于载荷的实际情况布置传感器的思想和表征最小二乘的计算方法。在结构损伤识别的研究方面，提出计算机仿真的部分相关噪声模型；利用希黄变换的经验模态分解消除噪声和识别非线性损伤的方法等。
In the field of senor placement, we discovered the physical significance of influential Effective Independence method and connection between the Effective Independence method and the modal kinetic energy method. We proposed a fast algorithm to compute Effective Independence through QR decomposition. We analyzed the sensor placement method based on H-infinity norm and found its approximate relation with the mode shape summation method. We proposed a novel load dependent sensor placement method and a representative least squares method for its solution. We developed a partial correlation noise model for computer simulation and proposed de-noise method with empirical mode decomposition.
有效独立法QR降阶更新与分解相对计算效率比
Computation efficiency of QR downdating to new QR decomposition for Effective Independence .
③光纤光栅传感器在结构健康监测中的应用
自行研制开发的光纤光栅传感器在海底管线地震反应特性试验、小岗山拱坝整体模型以及海洋石油平台模型等一系列模型试验中得到了应用。另外，自行研制的光纤光栅传感器还成功地应用于了胜利油田单立柱海洋石油平台的健康监测、大连市新体育中心体育场馆结构健康监测。
The fiber Bragg grating sensors were applied in vibration experiment of submarine pipeline model, earthquake destructive test of the whole concrete dam model and ocean offshore platform model test. In addition, the fiber Bragg grating sensors were successfully applied in the structural health monitoring of the oil production offshore platforms and large sports venues
光纤光栅传感器在CB271单立柱海洋平台健康监测中的应用
Application of fiber Bragg grating sensors in CB271 ocean platform with single pillar
光纤光栅传感器在大连市新体育馆健康监测中的应用
Application of fiber Bragg grating sensors in Dalian sports center
④结构监测系统及安全评价方法研究
自行开发了基于NI-Compact RIO的大型结构远程智能健康监测系统。该系统软件基于LabVIEW编程环境，利用NI-Compact RIO机箱及R系列数据采集卡，将多类型传感器信号集成到监测系统中，同时采样及存储，从而实现了多物理量的实时同步测量。该系统能够实时监测结构应力变化、变形情况及振动响应，具有自动警报以及自动生成报表功能。
A remote health monitoring system of large structures was developed based on NI-Compact RIO. This synchronous sampling system, developed in LabVIEW, realizes multi-sensor synchronous sampling and saving on NI-CompactRIO platform. This system not only offers the function of real-time monitoring structure stress, deformation condition and vibration response, but also is provided with the mechanism of auto-warning by Email or short message and automatic generation data report.
监测系统及软件界面
The demodulation device and the software interface of monitoring system
