scholarly journals Fiber-optic sensor for real-time monitoring of temperature on high voltage (400KV) power transmission lines

2009 ◽  
Author(s):  
Tarun K. Gangopadhyay ◽  
Mukul C. Paul ◽  
Leif Bjerkan
Keyword(s):  
Real Time ◽  
High Voltage ◽  
Transmission Lines ◽  
Fiber Optic ◽  
Power Transmission ◽  
Fiber Optic Sensor ◽  
Power Transmission Lines ◽  
Real Time Monitoring ◽  
Optic Sensor

Distributed fiber-optic sensor for real-time monitoring of energized transformer cores

2017 ◽  
Author(s):  
Ping Lu ◽  
Kevin Byerly ◽  
Michael Buric ◽  
Paul Zandhuis ◽  
Chenhu Sun ◽  
...  
Keyword(s):  
Real Time ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Real Time Monitoring ◽  
Optic Sensor ◽  
Distributed Fiber Optic Sensor

scholarly journals Fiber Optic Sensor for Real-time Monitoring of Freezing–Thawing Cycle in Cryosurgery

2020 ◽  
Vol 10 (3) ◽  
pp. 1053
Author(s):  
Dimosthenis Spasopoulos ◽  
George Rattas ◽  
Archontis Kaisas ◽  
Thomas Dalagiannis ◽  
Ioannis D. Bassukas ◽  
...  
Keyword(s):  
Real Time ◽  
Optical Transmission ◽  
Fiber Optic ◽  
Expert Knowledge ◽  
Ex Vivo ◽  
Fiber Optic Sensor ◽  
Real Time Monitoring ◽  
Fiber Array ◽  
Optic Sensor ◽  
Optical Fiber Array

Cryosurgery/cryotherapy is a widely used, freezing–thawing technique for the renewal or destruction of pathological tissues by applying localized rapid cooling; however, it still relies on the subjective “expert knowledge” of the physicians without, up to now, real-time monitoring of the treatment. This work focused on assessing the depth of freezing using optical transmission and backscattering measurements from frozen/unfrozen porcine ex-vivo skin samples. An optical fiber-array sensor was subsequently developed to determine the depth of freezing and the associated kill zone during freeze–thawing cycles with sub-millimeter accuracy within the skin tissue.

Real-time monitoring of DNA hybridization and melting processes using a fiber optic sensor

2012 ◽  
Vol 23 (6) ◽  
pp. 065503 ◽  
Author(s):  
Filip Delport ◽  
Jeroen Pollet ◽  
Kris Janssen ◽  
Bert Verbruggen ◽  
Karel Knez ◽  
...  
Keyword(s):  
Real Time ◽  
Dna Hybridization ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Real Time Monitoring ◽  
Optic Sensor

scholarly journals Do High-Voltage Power Transmission Lines Affect Forest Landscape and Vegetation Growth: Evidence from a Case for Southeastern of China

Forests ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 162 ◽  
Author(s):  
Xiang Li ◽  
Yuying Lin
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Power Transmission ◽  
Mesh Size ◽  
Forest Landscape ◽  
Power Transmission Lines ◽  
Vegetation Growth ◽  
Landscape Types

The rapid growth of the network of high-voltage power transmission lines (HVPTLs) is inevitably covering more forest domains. However, no direct quantitative measurements have been reported of the effects of HVPTLs on vegetation growth. Thus, the impacts of HVPTLs on vegetation growth are uncertain. Taking one of the areas with the highest forest coverage in China as an example, the upper reaches of the Minjiang River in Fujian Province, we quantitatively analyzed the effect of HVPTLs on forest landscape fragmentation and vegetation growth using Landsat imageries and forest inventory datasets. The results revealed that 0.9% of the forests became edge habitats assuming a 150 m depth-of-edge-influence by HVPTLs, and the forest plantations were the most exposed to HVPTLs among all the forest landscape types. Habitat fragmentation was the main consequence of HVPTL installation, which can be reduced by an increase in the patch density and a decrease in the mean patch area (MA), largest patch index (LPI), and effective mesh size (MESH). In all the landscape types, the forest plantation and the non-forest land were most affected by HVPTLs, with the LPI values decreasing by 44.1 and 20.8%, respectively. The values of MESH decreased by 44.2 and 32.2%, respectively. We found an obvious increasing trend in the values of the normalized difference vegetation index (NDVI) in 2016 and NDVI growth during the period of 2007 to 2016 with an increase in the distance from HVPTL. The turning points of stability were 60 to 90 meters for HVPTL corridors and 90 to 150 meters for HVPTL pylons, which indicates that the pylons have a much greater impact on NDVI and its growth than the lines. Our research provides valuable suggestions for vegetation protection, restoration, and wildfire management after the construction of HVPTLs.

Fiber Optic Sensor Development for Real-Time In-Situ Epoxy Cure Monitoring

1997 ◽  
Vol 31 (1) ◽  
pp. 87-102 ◽  
Author(s):  
Y. M. Liu ◽  
C. Ganesh ◽  
J. P. H. Steele ◽  
J. E. Jones
Keyword(s):  
Real Time ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Sensor Development ◽  
Cure Monitoring ◽  
Optic Sensor
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