A swept laser using a reference based on acetylene cell have been used as a water level FBG interrogator for run-of-the river hydroelectric applications, where long term stability and high reliability measurements are...
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We propose and demonstrate a new compact current sensor and technique capable to mitigate the residual state of polarization variation of partially depolarized optical sources. Sensor can operate from 0 to 300A and, i...
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A compact high pressure FBG sensor using a single point attached fiber in a ferrule was proposed. It was compared theoretically, by simulations and experimentally to FBG fully attached to the ferrule conception. Resul...
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We propose and demonstrate a compact high pressure FBG sensor using a single attached point in a fiber ferrule developed to measure pressure in internal combustion chamber of a thermoelectric plant engine. The sensor ...
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In this work we propose a new electronic method for fiber Bragg grating (FBG) temperature compensation. This method uses a voltage-controlled gain amplifier (VCA) to compensation of temperature effects in a FBG sensin...
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Wireless technology is one of the enabler for Internet of Things (IoT) with a tremendous expected growth in the next years. The variety of wireless technologies to support different requirements like coverage or netwo...
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In the original publication [1] were several parts incorrect. The corrected versions can be found below. The original article has been updated to rectify these errors.
In the original publication [1] were several parts incorrect. The corrected versions can be found below. The original article has been updated to rectify these errors.
Electric vehicle (EV) charging sites in Brazil are still scarce. However, due to the large number of homes with their own garages in the country, it is believed that the growth of the technology will stimulate the use...
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Electric vehicle (EV) charging sites in Brazil are still scarce. However, due to the large number of homes with their own garages in the country, it is believed that the growth of the technology will stimulate the use of residential charging stations (CSs). Because the EV is a load with significant power consumption and remains connected to the grid for several hours during its slow recharge, this article aims to analyze and identify the possible impacts associated with this condition from the point of view of the power grid and the electricity utility company and its influence on the power quality of low voltage urban networks. Therefore, real field measurements are used and analyzed according to Brazilian and international recommendations and standards.
Long range ultrasonic testing approach is strategic due to its capability to inspect long distances and to detect incipient damage in rail transportation. The present work aims to verify the ability of a FBG sensor to...
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ISBN:
(纸本)9781509062423;9781509062416
Long range ultrasonic testing approach is strategic due to its capability to inspect long distances and to detect incipient damage in rail transportation. The present work aims to verify the ability of a FBG sensor to measure ultrasonic guided waves in a subway rail sample. The results were compared with conventional acoustic detection using lead zirconate titanate (PZT) sensor in a 5-m rail sample at 40 kHz.
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