MyJournals Home  

RSS FeedsSensors, Vol. 18, Pages 1975: Directional Sensitivity of a MEMS-Based Fiber-Optic Extrinsic Fabry-Perot Ultrasonic Sensor for Partial Discharge Detection (Sensors)

 
 

26 june 2018 10:17:02

 
Sensors, Vol. 18, Pages 1975: Directional Sensitivity of a MEMS-Based Fiber-Optic Extrinsic Fabry-Perot Ultrasonic Sensor for Partial Discharge Detection (Sensors)
 




Extrinsic Fabry-Perot (FP) interferometric sensors are being intensively applied for partial discharge (PD) detection and localization. Previous research work has mainly focused on novel structures and materials to improve the sensitivity and linear response of these sensors. However, the directional response behavior of an FP ultrasonic sensor is also of particular importance in localizing the PD source, which is rarely considered. Here, the directional sensitivity of a microelectromechanical system (MEMS)-based FP ultrasonic sensor with a 5-?m-thick micromechanical vibrating diaphragm is experimentally investigated. Ultrasonic signals from a discharge source with varying incident angles and linear distances are measured and analyzed. The results show that the sensor has a 5.90 dB amplitude fluctuation over a 60 incident range and an exciting capability to detect weak PD signals from 3 m away due to its high signal-noise ratio. The findings are expected to optimize the configuration of a sensor array and accurately localize the PD source.


Del.icio.us Digg Facebook Google StumbleUpon Twitter
 
109 viewsCategory: Chemistry, Physics
 
Sensors, Vol. 18, Pages 1976: On the Coverage of Bus-Based Mobile Sensing (Sensors)
Sensors, Vol. 18, Pages 1974: Accurate Smartphone Indoor Visual Positioning Based on a High-Precision 3D Photorealistic Map (Sensors)
 
 
blog comments powered by Disqus


MyJournals.org
The latest issues of all your favorite science journals on one page

Username:
Password:

Register | Retrieve

Search:

Physics

Use these buttons to bookmark us:
Del.icio.us Digg Facebook Google StumbleUpon Twitter


Valid HTML 4.01 Transitional
Copyright © 2008 - 2018 Indigonet Services B.V.. Contact: Tim Hulsen. Read here our privacy notice.
Other websites of Indigonet Services B.V.: Nieuws Vacatures News Tweets Travel Photos Nachrichten Indigonet Finances Leer Mandarijn