土木工程监测用光纤F-P位移测量技术

Technology of optical fiber displacement sensor based on F-P for health monitoring of civil engineering

介绍了基于F -P原理的光纤位移计的基本原理 ,对一简支梁在三分点加载的中部挠度进行了测量 ,测得的结果与普通百分表的测量值相比较 ,两者吻合很好。光纤位移计固定在实验装置上保持不变 ,三个月后 ,再对梁的挠度进行测量 ,所得结果与百分表测量值吻合仍很好 ,表明基于F -P原理的光纤位移计具有很好的精度与稳定性 ,满足土木工程健康监测的要求 ,具有较好的应用前景。

WT5”BZ]: The theory of optical fiber displacement sensor based on F-P is introduced. The flexivity of a beam, which is acted on by 3-division point force, is measured by dial gauge and F-P displacement sensor. The values are consistent. Three months later, measurement is carried out again and the values are also consistent, which shows that F-P displacement sensor is stable, accurate and suitable for health monitoring of civil engineering. [WT5”HZ]