Vibration sensor for the health monitoring of the large rotating machinery: Review and outlook

S Xu, F **ng, R Wang, W Li, Y Wang, X Wang - Sensor Review, 2018‏ - emerald.com
Purpose At present, one of the key equipment in pillar industries is a large rotating
machinery. Conducting regular health monitoring is important for ensuring safe operation of …

Fibre optic sensors for the monitoring of rotating electric machines: a review

K Shang, Y Zhang, M Galea, V Brusic… - Optical and Quantum …, 2021‏ - Springer
Accurate and efficient monitoring of electrical machine (EM) operating parameters, including
temperature, mechanical vibration, torque and rotating speed and others that can indicate …

[HTML][HTML] Phase stability control of optical fiber partial discharge ultrasonic sensing system

C **ng, Q Zang, R He, J Zhao, L Wang, L Dai, R Shi… - Sensors, 2022‏ - mdpi.com
Optic fiber interferometers are highly sensitive ultrasonic sensors for partial discharge
detection. However, low-frequency vibration and environmental noise will disturb the …

Real-time polarimetric optical high-voltage sensor using phase-controlled demodulation

F da Cruz Pereira, JH Galeti, RT Higuti… - Journal of Lightwave …, 2018‏ - ieeexplore.ieee.org
Modern smart grid designs demand reliable sensors throughout the power delivery systems,
not only to monitor the quality of the electrical energy generated by different technologies …

FPGA-Based Hardware Implementation of Homodyne Demodulation for Optical Fiber Sensors

A Jiménez, Á Sauceda, A Muñoz, J Duarte, J Mireles Jr - Photonics, 2023‏ - mdpi.com
Homodyne demodulation is a convenient technique for signal detection in interferometric
sensors. The demodulation process is typically developed using analog circuits. However, to …

Real-time single analog output for quadrature phase interferometry

C Barraud, L Garcia, B Cross… - … Science and Technology, 2017‏ - iopscience.iop.org
We present a dynamic displacement sensor based on a quadrature phase interferometer,
providing a real-time analog output of the differential displacement between two mobile …

Digital control system for two-beam optical interferometry using variable structure and sliding modes method

SS Lyra, RI Martin, FC Pereira… - … , RF, Millimeter, and …, 2019‏ - spiedigitallibrary.org
Laser interferometry is recognized as an extremely sensitive measurement technique,
capable of detecting quantities that conventional sensors usually cannot. However, such …

Polarimetric optical high-voltage sensor using synthetic-heterodyne demodulation and Hilbert transform with gain control feedback

JH Galeti, RT Higuti, C Kitano… - IEEE Journal of …, 2016‏ - ieeexplore.ieee.org
Optical voltage sensors are widely used for high-voltage (HV) sensing, but the measurement
accuracy is often compromised by a sensitivity drift due to variations in the ambient …

[PDF][PDF] FPGA-Based Hardware Implementation of Homodyne Demodulation for Optical Fiber Sensors. Photonics 2023, 10, 258

A Jiménez, Á Sauceda, A Muñoz, J Duarte, J Mireles Jr - 2023‏ - academia.edu
Homodyne demodulation is a convenient technique for signal detection in interferometric
sensors. The demodulation process is typically developed using analog circuits. However, to …

Exact and real-time vibration measurement with a laser interferometer using a feedback control system

M Thein, O Sasaki - OSA Continuum, 2019‏ - opg.optica.org
Real-time vibration measurement with a high accuracy is described in which a He-Ne laser
interferometer and a feedback control system are used. The measured vibration waveform is …