New design of optical electric-current sensor for sensitivity improvement

2000 ◽  
Vol 49 (2) ◽  
pp. 418-423 ◽  
Author(s):  
B. Yi ◽  
C.B. Chu ◽  
K.S. Chiang ◽  
H.S.H. Chung
Keyword(s):  
Electric Current ◽  
Current Sensor ◽  
Sensitivity Improvement

Interferometric Fiber-Optic Electric Current Sensor for Industrial Application

2010 ◽  
Vol 437 ◽  
pp. 314-318 ◽  
Author(s):  
Nikolay I. Starostin ◽  
Maksim V. Ryabko ◽  
Yurii K. Chamorovskii ◽  
Vladimir P. Gubin ◽  
Aleksandr I. Sazonov ◽  
...  
Keyword(s):  
Electric Current ◽  
Industrial Application ◽  
Temperature Compensation ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Current Sensor ◽  
Sensor Output ◽  
Optic Sensor ◽  
Spun Fiber ◽  
Fiber Coil

The interferometric electric current fiber-optic sensor for application in industry is presented. The modified spun fiber is used for sensitive fiber coil of sensor. The sensor has accuracy of 0.5% at temperature range from -40°C to 60°C without necessity of additional temperature compensation. The range of measured current is 15 – 250 kA. A frequency band is 0 – 5000 Hz and a nonlinearity of a sensor output is ±0.15%.

Reciprocal-compensated fiber optic electric current sensor

1994 ◽  
Author(s):  
Xiaojun Fang ◽  
Anbo Wang ◽  
Russell G. May ◽  
Kent A. Murphy ◽  
Richard O. Claus
Keyword(s):  
Electric Current ◽  
Fiber Optic ◽  
Current Sensor

scholarly journals Differential twin receiving fiber-optic magnetic field and electric current sensor utilizing a microfiber coupler

2015 ◽  
Vol 23 (7) ◽  
pp. 9407 ◽  
Author(s):  
Shao-cheng Yan ◽  
Ye Chen ◽  
Cai Li ◽  
Fei Xu ◽  
Yan-qing Lu
Keyword(s):  
Magnetic Field ◽  
Electric Current ◽  
Fiber Optic ◽  
Current Sensor

Design and Fabrication of a MEMS AC Electric Current Sensor

2008 ◽  
Vol 54 ◽  
pp. 350-355 ◽  
Author(s):  
Eli S. Leland ◽  
Richard M. White ◽  
Paul K. Wright
Keyword(s):  
Permanent Magnet ◽  
Electric Current ◽  
Permanent Magnets ◽  
Analytical Models ◽  
Current Sensor ◽  
Piezoelectric Cantilever ◽  
New Type ◽  
Self Powered ◽  
Network Technologies ◽  
Device Sensitivity

The need for energy efficiency combined with advances in compact sensor network technologies present an opportunity for a new type of sensor to monitor electricity usage in residential and commercial environments. A novel design for a self-powered, proximity based AC electric current sensor has been developed. This sensor device is constructed of a piezoelectric cantilever with a permanent magnet mounted to the cantilever's free end. When the sensor is placed in proximity to a wire carrying AC electric current, the permanent magnet couples to the wire's alternating magnetic field, deflecting the piezoelectric cantilever and thus producing a sinusoidal voltage proportional to the current being measured. Analytical models were developed to predict the magnetic forces and piezoelectric voltage output pertaining to this design. MEMS-scale cantilevers are currently under development using a three-mask process and aluminum nitride as the active piezoelectric material. Very small (300 μm) permanent magnets have been dispenser-printed using magnetic powders in a polymer matrix. Previously presented meso-scale (2-3 cm3) prototype devices exhibited sensitivities of 74 mV/A, while simulations suggest MEMS device sensitivity of 2-4 mV/A.

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