Design and Realization of a Novel Compact Fluxgate Current Sensor

Yang, Xiaoguang; Li, Yuanyuan; Zheng, Weidong; Wei, Guo; Wang, Youhua; Yan, Rongge

doi:10.1109/tmag.2014.2358671

Cited by 35 publications

(12 citation statements)

References 13 publications

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“…Compared with other magnetic sensors, fluxgate magnetic sensors have advantages such as high sensitivity, high accuracy, high resolution, simple and compact structures, and low noise [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. What’s more, they can be used in different kinds of environment and even hostile environments, and they have important applications in weak magnetic field measurements.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress of Fluxgate Magnetic Sensors: Basic Research and Application

Wei

Liao

Zhang

et al. 2021

Sensors

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Fluxgate magnetic sensors are especially important in detecting weak magnetic fields. The mechanism of a fluxgate magnetic sensor is based on Faraday’s law of electromagnetic induction. The structure of a fluxgate magnetic sensor mainly consists of excitation windings, core and sensing windings, similar to the structure of a transformer. To date, they have been applied to many fields such as geophysics and astro-observations, wearable electronic devices and non-destructive testing. In this review, we report the recent progress in both the basic research and applications of fluxgate magnetic sensors, especially in the past two years. Regarding the basic research, we focus on the progress in lowering the noise, better calibration methods and increasing the sensitivity. Concerning applications, we introduce recent work about fluxgate magnetometers on spacecraft, unmanned aerial vehicles, wearable electronic devices and defect detection in coiled tubing. Based on the above work, we hope that we can have a clearer prospect about the future research direction of fluxgate magnetic sensor.

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Section: Introductionmentioning

confidence: 99%

Recent Progress of Fluxgate Magnetic Sensors: Basic Research and Application

Wei

Liao

Zhang

et al. 2021

Sensors

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“…Fluxgate sensors are widely used vector magnetic field sensors used in measuring the dc or low-frequency ac magnetic fields [1]. High linearity, high temperature stability and room temperature operation characteristics of the fluxgate sensors enable them to be applied in many fields, such as electronic compasses [2,3], non-destructive testing [4], current sensors [5,6], bio-medical diagnostics [7,8,9] and space exploration [10].…”

Section: Introductionmentioning

confidence: 99%

Improved Performance of Fundamental Mode Orthogonal Fluxgate Using a Micro-Patterned Meander-Shaped Ribbon Core

Zhi

Zhang

Lei

2019

Sensors

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In this paper, the performance of orthogonal fluxgate sensors with meander-shaped cores is studied in fundamental mode. The meander-shaped cores are made by micro-patterning technology based on a Co-based amorphous ribbon. The main advantage of this structure is that the linear operating range of the sensor can be adjusted simply by changing the number of strips, without affecting the excitation mechanism. Experiments show that a linear range of 560 μT is obtained by a meander-shaped core sensor with 12 strips. The changes in the number of strips can also increase sensitivity and reduce noise of the sensor. We can achieve a sensitivity of 600 V/T and a noise level of 0.64 nT/√Hz at 1 Hz for a meander-shaped core sensor with eight strips. Compared with the performance of the sensors built using a single strip core having the same equivalent cross-sectional area, the use of meander-shaped core can provide a higher sensitivity and linearity, and a lower noise level. We also compare the performance of an eight-strip meander-shaped core orthogonal fluxgate operated in the fundamental and second-harmonic modes. Similar sensitivity for the two modes can be obtained by adjusting the excitation current. In this case, we find that the noise of sensor operating in fundamental mode is about five times lower than that of the sensor operating in second-harmonic mode. This can be interpreted as the suppression of Barkhausen noise by unipolar bias in the fundamental mode.

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“…It is well known that flux gate sensors are able to detect small DC magnetic fields, typically, from 0.5 nT to 100 μT, and now they have been widely used in the market 31 – 36 . Unfortunately, their power consumption tends to be rather high since the requirement to saturate the magnetic core materials periodically 37 .…”

Section: Introductionmentioning

confidence: 99%

A magnetoelectric flux gate: new approach for weak DC magnetic field detection

Dong

Shi

PourhosseiniAsl

et al. 2017

Sci Rep

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The magnetic flux gate sensors based on Faraday’s Law of Induction are widely used for DC or extremely low frequency magnetic field detection. Recently, as the fast development of multiferroics and magnetoelectric (ME) composite materials, a new technology based on ME coupling effect is emerging for potential devices application. Here, we report a magnetoelectric flux gate sensor (MEFGS) for weak DC magnetic field detection for the first time, which works on a similar magnetic flux gate principle, but based on ME coupling effect. The proposed MEFGS has a shuttle-shaped configuration made of amorphous FeBSi alloy (Metglas) serving as both magnetic and magnetostrictive cores for producing a closed-loop high-frequency magnetic flux and also a longitudinal vibration, and one pair of embedded piezoelectric PMN-PT fibers ([011]-oriented Pb(Mg,Nb)O3-PbTiO3 single crystal) serving as ME flux gate in a differential mode for detecting magnetic anomaly. In this way, the relative change in output signal of the MEFGS under an applied DC magnetic anomaly of 1 nT was greatly enhanced by a factor of 4 to 5 in comparison with the previous reports. The proposed ME flux gate shows a great potential for magnetic anomaly detections, such as magnetic navigation, magnetic based medical diagnosis, etc.

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Design and Realization of a Novel Compact Fluxgate Current Sensor

Cited by 35 publications

References 13 publications

Recent Progress of Fluxgate Magnetic Sensors: Basic Research and Application

Recent Progress of Fluxgate Magnetic Sensors: Basic Research and Application

Improved Performance of Fundamental Mode Orthogonal Fluxgate Using a Micro-Patterned Meander-Shaped Ribbon Core

A magnetoelectric flux gate: new approach for weak DC magnetic field detection

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