Fiber-optic ac electric-field sensor based on the electrostrictive effect

1992 ◽  
Vol 17 (5) ◽  
pp. 372 ◽  
Author(s):  
S. T. Vohra ◽  
F. Bucholtz
Keyword(s):  
Electric Field ◽  
Fiber Optic ◽  
Electric Field Sensor ◽  
Ac Electric Field ◽  
Field Sensor ◽  
Electrostrictive Effect

Fiber-Optic Electric Field Sensor Based on Electrostriction Effect

2012 ◽  
Vol 187 ◽  
pp. 235-240 ◽  
Author(s):  
Juan Zhao ◽  
Hui Yuan Zhang ◽  
Yin Shun Wang ◽  
Hong Wei Liu
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Fiber Bragg Grating ◽  
Fiber Optic ◽  
Measuring System ◽  
Bragg Grating ◽  
Electric Field Sensor ◽  
Ac Electric Field ◽  
Field Sensor

This paper presents a new method for measuring AC field strength, with application of electrostriction effect of electrostrictive ceramics and technology of fiber Bragg grating. We use electrostriction effect to design the fiber-optic electric field sensor. This device turns the strain of electrostriction material influenced by electric field into the strain of fiber Bragg grating, then wavelength of feedback changes. We can get the strain of electrostriction material through the comparison between initial wavelength and wavelength of feedback, then measurement of electric field strength can be achieved by detecting the strain of electrostriction material. Experiments indicate that fiber-optic electric field sensor based on electrostriction effect is of effective value for measuring electric field strength, and the response of measuring system to AC electric field is linear. We apply an effective method for the research of measuring electric field strength.

Multi-axial fiber-optic electric field sensor

2010 ◽  
Author(s):  
D. Perry ◽  
R. Gibson ◽  
B. Schreeve ◽  
S. Schultz ◽  
D. Selfridge
Keyword(s):  
Electric Field ◽  
Fiber Optic ◽  
Electric Field Sensor ◽  
Field Sensor

scholarly journals Method for Localization Aerial Target in AC Electric Field Based on Sensor Circular Array

Sensors ◽  
2020 ◽  
Vol 20 (6) ◽  
pp. 1585
Author(s):  
Wenbin Zhang ◽  
Peng Li ◽  
Nianrong Zhou ◽  
Chunguang Suo ◽  
Weiren Chen ◽  
...  
Keyword(s):  
Electric Field ◽  
Localization Error ◽  
Circular Array ◽  
Distance Error ◽  
Electric Field Sensors ◽  
Safety Distance ◽  
Electric Field Sensor ◽  
Ac Electric Field ◽  
Measurement Principle ◽  
Field Sensor

The traditional method of using electric field sensors to realize early warning of electric power safety distance cannot measure the distance of dangerous sources. Therefore, aiming at the electric field with a frequency of 50 to 60 Hz (AC electric field), a new method for localization of aerial AC target by the capacitive one-dimensional spherical electric field sensor circular array is studied. This method can directly calculate the distance, elevation, and azimuth of the detector from the dangerous source. By combining the measurement principle of the spherical electric field sensor and the plane circular array theory, a mathematical model for the localization of aerial targets in an AC electric field is established. An error model was established using Gaussian noise and the effects of different layout parameters on the localization error were simulated. Based on mutual interference between sensors, minimum induced charge, and localization error, an optimal model for sensor layout was established, and it was solved by using genetic algorithms. The optimization results show that when the number of sensors is 4, the array radius is 20 cm, and the sensor radius is 1.5 cm, the ranging error is 8.4%. The detector was developed based on the layout parameters obtained from the optimization results, and the localization method was experimentally verified at 10 and 35 kV alarm distances. The experimental results show that when the detector is located at 10 kV alarm distance, the distance error is 0.18 m, the elevation error is 6.8°, and the azimuth error is 4.57°, and when it is located at 35 kV alarm distance, the distance error is 0.2 m, the elevation error is 4.8°, and the azimuth error is 5.14°, which meets the safety distance warning requirements of 10 and 35 kV voltage levels.

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