钳压法制作的同轴电缆法布里-珀罗传感器

发布时间：2018-03-29 07:54

本文选题：同轴电缆　切入点：法布里-珀罗传感器　出处：《中国测试》2017年09期

【摘要】：为研究同轴电缆法布里-珀罗干涉(CCFPI)传感器的钳压法制作工艺,模拟不同结构参数对CCFPI传感器信号质量的影响,分析得出CCFPI反射点的绝缘层外径宜在1.4~2 mm范围内,钳压变形长度不应小于2 mm,反射点一致性对信号质量影响显著;模拟电缆拉伸过程,观察到信号频移对电缆应变呈现良好的线性反应。依据模拟结果制作CCFPI传感器,并进行传感性能测试。试验结果表明:CCFPI传感器测得的应变值始终与千分表吻合良好,二者拟合斜率为1.004 92,相关系数为0.998 67,且在小应变范围内CCFPI传感器的测量数据与光纤光栅吻合良好,说明该传感器的测量结果真实可靠;同时观察到CCFPI传感器的分辨率可达110με,失效应变为140 000με。
[Abstract]:In order to study the fabrication technology of CCFPI sensor with coaxial cable Fabry-Perot Interferometer, the influence of different structural parameters on the signal quality of CCFPI sensor is simulated. It is concluded that the outer diameter of insulation layer of CCFPI reflection point should be in the range of 1.42mm. The length of clamping deformation should not be less than 2 mm, the consistency of reflection point has a significant effect on the signal quality, the linear response of signal frequency shift to cable strain is observed during the cable stretching process, and the CCFPI sensor is fabricated based on the simulation results. The experimental results show that the strain measured by the 1% CCFPI sensor is always in good agreement with the meter. The fitting slope is 1.004 2 and the correlation coefficient is 0.998 67. The measured data of the CCFPI sensor are in good agreement with the fiber grating in the small strain range, which shows that the measurement results of the sensor are true and reliable. At the same time, the CCFPI sensor has a resolution of 110 渭蔚 and a failure strain of 140,000 渭蔚.
【作者单位】：大连理工大学土木工程学院;大连理工大学海岸和近海工程国家重点实验室;克莱姆森大学电子与计算机工程系;
【基金】：国家自然科学基金(61675038)
【分类号】：TP212

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