基于增材制造技术的光纤布拉格光栅土压力传感器  

Fiber Bragg Grating Soil Pressure Sensor Based on Additive Manufacturing Technology

作　　者：刘文丽 洪成雨 鲍成志 段景川 娄在明 Liu Wenli;Hong Chengyu;Bao Chengzhi;Duan Jingchuan;Lou Zaiming(College of Civil and Transportation Engineering,Shenzhen University,Shenzhen,Guangdong 518060 China;Stecol Corporation,Tianjin 300384,China;Underground Polis Academy,Shenzhen University,Shenzhen,Guangdong 518060 China;Power China South Construction Investment Co.,Ltd.,Shenzhen,Guangdong 518000 China;Department of Civil Engineering,School of Mechanics and Engineering Science,Shanghai University,Shanghai 200444,China)

机构地区：[1]深圳大学土木与交通工程学院,广东深圳518060 [2]中国电建市政建设集团有限公司,天津300384 [3]深圳大学未来地下城市研究院,广东深圳518060 [4]中电建南方建设投资有限公司,广东深圳518000 [5]上海大学力学与工程科学学院土木工程系,上海200444

出　　处：《激光与光电子学进展》2021年第11期124-131,共8页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(52078303);国家重点研发计划(2018YFB2100901);中国电建集团铁路建设有限公司项目(4403012020000095)。

摘　　要：基于增材制造(AM)技术和光纤布拉格光栅(FBG)制备了一种土压力传感器。标定实验结果表明,FBG土压力传感器的灵敏度为0.2 pm/kPa,最小分辨率为5 kPa,量程为1000 kPa;且该传感器的灵敏度可根据需求用AM参数(填充密度、填充材料)进行调整,从而减小测量误差。室内模型箱的实验结果表明,该传感器能有效测量加载过程中土体内部的压力,且测量范围广,分辨率、量程可以根据实际情况定制,为土体内部的压力监测提供了一种新思路。In this study, a soil pressure sensor based on additive manufacturing(AM) technology and fiber Bragg grating(FBG) is designed. The calibration experiment results indicate that the sensitivity, minimum resolution, and measurement range of FBG soil pressure sensor are 0. 2 pm/k Pa, 5 k Pa, and 1000 k Pa, respectively, and that the sensitivity of the sensor can be adjusted as per requirement using AM parameters(filling density, filling material) to reduce measurement errors. The experimental results of the indoor model box show that, the sensor can effectively measure the internal pressure of soil during test loading and that measurement range is wide. The resolution and range can be customized according to real-world conditions, which provide a new approach for internal pressure monitoring of the soil.

关 键 词：光纤光学 光纤布拉格光栅 增材制造技术 土压力测量 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TH74[自动化与计算机技术—控制科学与工程]