A New DC Electric Field Sensor and Direct Measurements of Ionosphere Sq Electric Fields

2020 ◽  
Vol 15 (9) ◽  
pp. 1271-1280
Author(s):  
Minoru Tsutsui ◽  
Ryosaku Kaji
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Electric Field Sensor ◽  
Direct Measurements ◽  
Dc Electric Field ◽  
Field Sensor

A Mode-localized DC Electric Field Sensor

2021 ◽  
pp. 113244
Author(s):  
Yongcun Hao ◽  
Chenggang Wang ◽  
Zheng Sun ◽  
Zhao Zhang ◽  
Jin Guo ◽  
...  
Keyword(s):  
Electric Field ◽  
Electric Field Sensor ◽  
Dc Electric Field ◽  
Field Sensor

scholarly journals A High-Resolution Terahertz Electric Field Sensor Using a Corrugated Liquid Crystal Waveguide

Crystals ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 302 ◽  
Author(s):  
Lan-Lan Xu ◽  
Yi Gong ◽  
Ya-Xian Fan ◽  
Zhi-Yong Tao
Keyword(s):  
Liquid Crystals ◽  
Electric Field ◽  
Defect Mode ◽  
High Sensitivity ◽  
Electric Field Sensor ◽  
Significant Performance ◽  
Dc Electric Field ◽  
Field Sensor ◽  
Field Sensing ◽  
Very High

Liquid crystals (LCs) can always reflect variable optical properties in a broad terahertz (THz) band under external electric or magnetic fields. Based on the measurements of these varying properties, we can realize electric and magnetic field sensing with very high sensitivity. Here, we theoretically and numerically demonstrate a type of electric field sensor in the THz frequency range based on the defect mode arising in a periodically corrugated waveguide with liquid crystals. The Bragg defect structure consisting of periodically corrugated metallic walls and a defect in the middle can provide a narrow transmitted peak with controllable bandwidth, which can be used for external field sensing when it is filled with LCs. The molecular orientation of nematic LCs (E7) is not only very sensitive to the applied DC electric field but also very crucial to the effective refractive index of E7. Changing the effective index can efficiently shift the frequency of the transmitted peak in the THz spectrum. The simulated results show that the sensitivity can reach as high as 9.164 MHz/(V/m) and the smallest resolution is 0.1115 V/m. The proposed sensor and its significant performance could benefit electric field sensing and extend the applications of THz technology.

Technique for Reducing the Effects of Nonlinear Terms on Electric Field Measurements of Electric Field Sensor Arrays on Aircraft Platforms

2015 ◽  
Vol 32 (5) ◽  
pp. 993-1003 ◽  
Author(s):  
D. M. Mach
Keyword(s):  
Electric Field ◽  
External Electric Field ◽  
Electric Fields ◽  
Sensor Arrays ◽  
Field Measurements ◽  
Nonlinear Effects ◽  
Electric Field Sensor ◽  
Cloud Properties ◽  
Field Sensor ◽  
Nonlinear Components

AbstractA generalized technique has been developed that reduces the contributions of nonlinear effects that occur during measurements of natural electric fields around thunderstorms by an array of field mills on an aircraft. The nonlinear effects can be due to nearby charge emitted by the aircraft as it acquires and sheds charge, but the nonlinear effects are not limited to such sources. The generalized technique uses the multiple independent measurements of the external electric field obtained during flight to determine and remove nonlinear contaminations in the external vector electric field. To demonstrate the technique, a simulated case with nonlinear contaminations was created and then corrected for the nonlinear components. In addition, data from two different field programs utilizing two different aircraft and field mill configurations, each containing observable and different nonlinear effects, were also corrected for the significant nonlinear effects found in the field mill outputs. The expanded independent measurements in this new technique allow for the determination and correction of components in the field mill outputs from almost any measurable source. Alternate utilization of the technique can include removing effects in the aircraft charging such as aircraft altitude, cloud properties, engine power settings, or aircraft flap deployment. This technique provides a way to make more precise measurements of the true external electric field for scientific studies of cloud electrification.

Low-cost DC electric field sensor

2007 ◽  
Vol 134 (2) ◽  
pp. 396-398 ◽  
Author(s):  
Ben-Zion Kaplan ◽  
Vladimir Boroda ◽  
Uri Suissa
Keyword(s):  
Electric Field ◽  
Low Cost ◽  
Electric Field Sensor ◽  
Dc Electric Field ◽  
Field Sensor

Micromachined ac/dc electric field sensor with modulated sensitivity

2016 ◽  
Vol 245 ◽  
pp. 76-84 ◽  
Author(s):  
T. Chen ◽  
C. Shafai ◽  
A. Rajapakse ◽  
J.S.H. Liyanage ◽  
T.D. Neusitzer
Keyword(s):  
Electric Field ◽  
Electric Field Sensor ◽  
Dc Electric Field ◽  
Field Sensor

A high-resolution electric field sensor based on piezoelectric bimorph composite

2021 ◽  
Author(s):  
Miaomiao Cheng ◽  
Jingen Wu ◽  
mengmeng Guan ◽  
Qi Mao ◽  
dan Xian ◽  
...  
Keyword(s):  
High Resolution ◽  
Electric Field ◽  
Electric Fields ◽  
Low Cost ◽  
Rapid Development ◽  
High Sensitivity ◽  
Pdms Layer ◽  
Electric Field Sensor ◽  
Power Frequency ◽  
Field Sensor

Abstract The rapid development of the internet of things (IOT) technology has led to great demand for intelligent electric field sensor (EFS). Several working principles have been proposed, however major challenges remain existed for the requirements of EFS with low-cost, large-range, and high-resolution. In this paper, an EFS based on piezoelectric bending effect using d31 mode is developed, where a bending strain is induced on the sandwiched bimorph structure of PZT/PDMS/PZT under an applied electric field, and the capacitance value of the PDMS layer reveals detectable variation. We demonstrate an electric field sensor operating at the stress-mediated coupling between piezoelectric ceramic and elastic dielectric polymer, which reveals advantages such as simple fabrication process, low-cost and low power consumption. Due to the sandwiched bimorph structure, the strain caused by the electric field can be effectively transferred to improve the resolution of the device. The constitutive equations for the sandwiched bimorph structure are built, and the working principle of the proposed EFS is demonstrated. The EFS exhibits high sensitivity under both AC and DC electric fields, with a resolution of 0.1V/cm in the range of -3 to 3kV/cm. The proposed sensor provides an alternative solution for power equipment fault diagnosis, power frequency electric field detection, etc.

scholarly journals Research of independent DC electric field sensor with wireless power supply circuit

2019 ◽  
Vol 2019 (16) ◽  
pp. 929-932
Author(s):  
Jianzhong When ◽  
Zhanqing Yu ◽  
Chao Zhang ◽  
Ya Mou ◽  
Yaosheng Huang ◽  
...  
Keyword(s):  
Electric Field ◽  
Power Supply ◽  
Wireless Power ◽  
Supply Circuit ◽  
Electric Field Sensor ◽  
Power Supply Circuit ◽  
Dc Electric Field ◽  
Field Sensor ◽  
Wireless Power Supply

scholarly journals Surface-Integrated Electric Field Sensor for the Detection of High-Voltage Power Lines

Sensors ◽  
2021 ◽  
Vol 21 (24) ◽  
pp. 8327
Author(s):  
Gunbok Lee ◽  
Jeong-Yeon Kim ◽  
Gildong Kim ◽  
Jae Hee Kim
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
High Voltage ◽  
Strong Electric Field ◽  
The Body ◽  
Power Lines ◽  
Induced Voltage ◽  
Electric Field Sensor ◽  
Field Sensor ◽  
High Voltage Power Lines

When a drone is used for inspection of facilities, there are often cases in which high-voltage power lines interfere, resulting in the drone being caught or falling. To prevent this type of incident, drones must be capable of detecting high-voltage power lines. Typically, a strong electric field is formed around the high-voltage lines. To detect the electric fields around high-voltage lines, this study proposes an electric field sensor that may be integrated within the body of a drone. In a laboratory environment, a voltage of 25 kV was applied to an overhead line, and the induced voltage in the proposed sensor was measured at various electric field intensities. Over an electric field range of 0.5 to 10.1 kV/m, a voltage of 0 to 0.77 V was measured with each proposed sensor. In addition, the electric field and the voltage induced in the sensor were measured in a real-world railway environment with overhead lines. Under these conditions, the proposed sensor has the compensated value of 4.5 when the measured electric field was 4.05 kV/m. Therefore, the proposed sensor may be applied in drones to measure large electric fields and to detect the presence of high-voltage lines in its vicinity.

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