A simple fiber optic magnetic field and current sensor with spectral interrogation

Eftimov, Tinko; Dyankov, Georgi; Kolev, Petar; Vladev, Veselin

doi:10.1016/j.optcom.2022.128930

Cited by 11 publications

(14 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be learned from Eqs. ( 6) and (8). First, the integral of the magnetic field along the discrete path L is the comprehensive reflection of the magnetic field generated by the measured current i 1 and the disturbance current i 2 .…”

Section: Exploration Of the Reasons For Being Easily Affected By Dist...mentioning

confidence: 99%

“…3 Optical current transducers have good insulation performance, dynamic advantages of strong response-ability, and no saturation, and may be expected to solve the problem of GIS current measurement. [4][5][6][7][8][9][10][11][12] Among them, the straight-light path type optical current transducers have received extensive attention due to their simple structure, high reliability, no magnetic saturation, and little influence by temperature and vibration. [13][14][15][16][17][18] However, its sensing optical path is not a closed loop 19,20 ; it does not conform to Ampere's law when measuring current and is easily affected by external interference magnetic fields.…”

Section: Introductionmentioning

confidence: 99%

“…Optical current transducers have good insulation performance, dynamic advantages of strong response-ability, and no saturation, and may be expected to solve the problem of GIS current measurement 4 – 12 …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Anti-crosstalk magnetic field method for straight-light path type optical current transducer based on the background of gas-insulated substation

Huang

et al. 2023

Opt. Eng.

View full text Add to dashboard Cite

A distributed optical current transducer (DOCT) and a current measurement method are proposed to solve the problem that the straight-through optical current transducer is vulnerable to crosstalk magnetic field interference. We established a mathematical model of the magnetic interference degree of DOCT. Analyzing and summarizing the characteristics of the magnetic interference degree distribution of DOCT revealed that there are six magnetic interference zeros outside of DOCT. Then based on the background of three-phase common box current measurement in a gas-insulated substation, a current measurement method of anticrosstalk magnetic field interference is proposed, that is, adjusting the direction of DOCT to make the interference current at zero magnetic interference point, to achieve the effect of anticrosstalk magnetic field interference. The experiment shows that the measurement error of DOCT is <0.15%, and the interference of the crosstalk magnetic field can be ignored.

show abstract

Section: Exploration Of the Reasons For Being Easily Affected By Dist...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Anti-crosstalk magnetic field method for straight-light path type optical current transducer based on the background of gas-insulated substation

Huang

et al. 2023

Opt. Eng.

View full text Add to dashboard Cite

show abstract

“…Current sensors have been extensively used in both important traditional and emerging areas, including industrial control, aerospace, medical equipment, smart grids, and new energy fiber-optic sensors to detect and analyze electrical current [6][7][8][9][10][11]. However, these related research efforts are all designed to achieve single-range detection of current, which means they can only measure current within a specific range.…”

Section: Introductionmentioning

confidence: 99%

Dual-range TMR current sensor based on magnetic shunt/aggregation effects utilizing single magnetic ring structure

Bai,

Li,

et al. 2024

Meas. Sci. Technol.

View full text Add to dashboard Cite

In this paper, we propose and design a novel dual-range Tunnel Magnetoresistance (TMR) current sensor with a single magnetic ring structure. This design incorporates two distinct magnetic guiding effects, namely magnetic shunt and magnetic aggregation, within the same magnetic ring. By integrating a high-sensitivity TMR sensor chip with a closed-loop feedback circuit, we achieve a TMR current sensor with excellent linearity, high resolution, as well as high frequency response. The magnetic ring structure is first modeled and simulated, establishing a correlation between the distribution of magnetic induction intensity and the parameters of the magnetic ring and feedback coils. Through simulation optimization and theoretical calculations, we determine the optimal positions for TMR sensor chips in the magnetic ring, suitable for both current ranges. When a signal current is present, the TMR sensor chip generates a weak differential voltage signal, which is subsequently amplified, processed, and automatically transmitted to the laptop via a serial port. Furthermore, the sensor allows for automatic switching between the two current ranges. The results demonstrate that our designed dual-range current sensor exhibits outstanding performance characteristics, including a high resolution of 500 μA in the small range, accuracy of 0.10%, excellent linearity of 0.011%, and a fast frequency response of 500 kHz. These features make it highly applicable in various fields such as new energy vehicles and smart grids, indicating promising prospects for its widespread utilization.

show abstract

“…First, fiber optics have a low transmission loss, enabling long-distance signal transmission with minimal attenuation. Second, fiber optic sensors exhibit high sensitivity to external physical stimuli such as temperature, [2,3] strain, [4,5] acoustic vibrations, [6,7] current, [8,9] and pressure. [10,11] For sensors, the sensing layer plays a crucial role.…”

Section: Introductionmentioning

confidence: 99%

The Nanosilver Imprinted Cross‐Channel Film used in Microfluidic Chips Based on Microcavity Resonator for Mercury Assessment

Wen,

Hsu

2023

Advanced Sensor Research

View full text Add to dashboard Cite

In this study, a highly sensitive optical probe is designed, fabricated, and evaluated that is composed of a microfluidic device integrated with a fiber optic sensor for environmental monitoring. The resonant cavity is coated with a metal ion‐responsive molecularly imprinted nanocomposite film and monitored by a single‐mode fiber (SMF) optic sensor. The resulting Fabry–Pérot cavity‐based optical probe can accurately measure Hg levels in water with high sensitivity and stability. The nanocomposite film is synthesized using a one‐pot reaction process involving sodium alginate (SA)‐reduced nanosilver particles (nanoAg) dispersed in polyvinyl alcohol (VA). When an aqueous solution containing mercury is injected into the microfluidic device, interactions between Ag and Hg at the nanoscale form a solid Ag‐Hg solid amalgam in the resonant cavity, and surface plasmon resonance (SPR) and the Fabry–Pérot effect can be exploited to detect the presence of Hg. The synthesis, fabrication, and measurement system of this integrated device is simple and cost effective. The developed sensing heavy metals in wastewater treatment, catalysis enhancement, and nanoscale toxicity assessment, and contributes practically to achieving the sustainable development goal (SDG) of access to safe drinking water.

show abstract

A simple fiber optic magnetic field and current sensor with spectral interrogation

Cited by 11 publications

References 11 publications

Anti-crosstalk magnetic field method for straight-light path type optical current transducer based on the background of gas-insulated substation

Anti-crosstalk magnetic field method for straight-light path type optical current transducer based on the background of gas-insulated substation

Dual-range TMR current sensor based on magnetic shunt/aggregation effects utilizing single magnetic ring structure

The Nanosilver Imprinted Cross‐Channel Film used in Microfluidic Chips Based on Microcavity Resonator for Mercury Assessment

Contact Info

Product

Resources

About