Abstract
A high precision and small size Fiber Bragg Grating (FBG) inclination sensor which is used for slope monitoring is proposed in this paper. The FBG inclination sensor has a pendulum structure for high precision and a circular body for easy installation in the common inclinometer pipe. The sensitivity of the FBG inclination sensor can reach 400 pm/deg by optimizing its parameters. The test results show the superior performance of this FBG inclination sensor in terms of static characteristics, and its sensitivity is 406.6 pm/deg. The comparison experiment shows the static characteristics of the FBG inclination sensor are better than the traditional electrical inclination sensor.
Highlights
A High Precision Fiber Bragg Grating Inclination Sensor for Slope MonitoringHongbin Xu ,1 Feng Li, Weigang Zhao, Shupeng Wang ,2 Yanliang Du, and Ce Bian
Slope engineering is common in mountain airport, railway, and highway traffic [1]
The experiment equipment mainly consists of an inclinometer pipe, an Fiber Bragg Grating (FBG) inclination sensor, a traditional electrical inclination sensor, a dial indicator, a SM125 FBG interrogator, and a voltage traditional electrical inclination sensor voltage collector inclinometer pipe collector
Summary
Hongbin Xu ,1 Feng Li, Weigang Zhao, Shupeng Wang ,2 Yanliang Du, and Ce Bian. Received 15 March 2019; Revised 24 May 2019; Accepted 3 June 2019; Published 24 June 2019. A high precision and small size Fiber Bragg Grating (FBG) inclination sensor which is used for slope monitoring is proposed in this paper. The FBG inclination sensor has a pendulum structure for high precision and a circular body for easy installation in the common inclinometer pipe. The sensitivity of the FBG inclination sensor can reach 400 pm/deg by optimizing its parameters. The test results show the superior performance of this FBG inclination sensor in terms of static characteristics, and its sensitivity is 406.6 pm/deg. The comparison experiment shows the static characteristics of the FBG inclination sensor are better than the traditional electrical inclination sensor
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