Optical Displacement Sensor Suitable for Vibration Monitoring with Self-Calibration Feature

2013 ◽  
Vol 11 (10) ◽  
pp. 1867-1874
Author(s):  
László Nagy ◽  
Kalman Babković ◽  
Damir Krklješ
Keyword(s):  
Vibration Monitoring ◽  
Displacement Sensor ◽  
Self Calibration ◽  
Optical Displacement

scholarly journals Pendulum-Type Hetero-Core Fiber Optic Accelerometer for Low-Frequency Vibration Monitoring

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2528 ◽  
Author(s):  
Hiroshi Yamazaki ◽  
Ichiro Kurose ◽  
Michiko Nishiyama ◽  
Kazuhiro Watanabe
Keyword(s):  
Fiber Optics ◽  
Electromagnetic Interference ◽  
Large Scale ◽  
Fiber Optic ◽  
Low Frequency ◽  
Fiber Optic Sensor ◽  
Vibration Monitoring ◽  
Vibration Measurement ◽  
Displacement Sensor ◽  
Core Fiber

In this paper, a novel pendulum-type accelerometer based on hetero-core fiber optics has been proposed for structural health monitoring targeting large-scale civil infrastructures. Vibration measurement is a non-destructive method for diagnosing the failure of structures by assessing natural frequencies and other vibration patterns. The hetero-core fiber optic sensor utilized in the proposed accelerometer can serve as a displacement sensor with robustness to temperature changes, in addition to immunity to electromagnetic interference and chemical corrosions. Thus, the hetero-core sensor inside the accelerometer measures applied acceleration by detecting the rotation of an internal pendulum. A series of experiments showed that the hetero-core fiber sensor linearly responded to the rotation angle of the pendulum ranging within (−6°, 4°), and furthermore the proposed accelerometer could reproduce the waveform of input vibration in a frequency band of several Hz order.

A Self-Calibration Method for Angular Displacement Sensor Working in Harsh Environments

2019 ◽  
Vol 19 (8) ◽  
pp. 3033-3040 ◽  
Author(s):  
Li Gou ◽  
Donglin Peng ◽  
Xihou Chen ◽  
Liang Wu ◽  
Qifu Tang
Keyword(s):  
Angular Displacement ◽  
Calibration Method ◽  
Displacement Sensor ◽  
Harsh Environments ◽  
Self Calibration

Integrated optical displacement sensor based on asymmetric Mach–Zehnder interferometer chip

2017 ◽  
Vol 56 (2) ◽  
pp. 027109 ◽  
Author(s):  
Ning Zhao ◽  
Guang Qian ◽  
Xing-Chang Fu ◽  
Li-Jiang Zhang ◽  
Wei Hu ◽  
...  
Keyword(s):  
Zehnder Interferometer ◽  
Displacement Sensor ◽  
Optical Displacement ◽  
Integrated Optical ◽  
Mach Zehnder Interferometer

Noncontact Optical Displacement Sensor Using an Adiabatic U-Shaped Tapered Fiber

2015 ◽  
Vol 15 (10) ◽  
pp. 5388-5392 ◽  
Author(s):  
Mohd Zulhakimi Ab Razak ◽  
Siti Aisyah Reduan ◽  
Anir Syazwan Sharbirin ◽  
Norsyazriza Jamaludin ◽  
Mohd Zamani Zulkifli ◽  
...  
Keyword(s):  
Displacement Sensor ◽  
Tapered Fiber ◽  
Optical Displacement
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