基于光栅阵列传感的线型结构体应变监测研究

Research on Fiber Brag Grating Array Sensing Technology in Linear Structure Strain Monitoring

线型结构体应变监测技术在大型结构安全监测等领域中应用需求广泛。光纤传感技术中的新一代光栅阵列传感技术具备传感单元密度高、应变测量精度好、响应速度快、抗电磁干扰、可靠性高、使用寿命长等技术优势,能够有效提升线型结构体应变监测系统的各项性能指标。通过在实验室场景下开展模拟试验研究,显示了光栅阵列传感技术能够检测到线型结构体的变形过程及瞬时状态,具备较快的响应速度及较高的监测精度,证明了该技术在线型结构体分布式应变监测实际应用中的可行性。

The strain monitoring of linear structure is widely used in the field of safety monitoring for large structures.The new generation manufacturing process of fiber Bragg grating array sensing technology has many advantages such as high sensing unit density,good strain measurement accuracy,fast response speed,anti-electromagnetic interference,high reliability,long service life and so on,which can effectively improve the performance of linear structure strain monitoring system.Through the simulation test in the laboratory,it is shown that the fiber Bragg grating array sensing technology can detect the deformation process and instantaneous state of the linear structure,and has a faster response speed and higher monitoring accuracy,which proves the feasibility of this technology in the practical application of the linear structure distributed strain monitoring.