Conceptual Review of Detection Representation Techniques for Magnetic IEDs

Mahmood, Hamzah N.; Ismail, Widad

doi:10.1109/jsen.2020.2996575

Cited by 1 publication

(1 citation statement)

References 19 publications

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“…All the aforementioned ME sensors are predominantly responsive when the magnetic field acts in their plane and thus, can be used only as one-directional magnetic field sensing. However, defense-related applications such as vehicle detection systems [17], IED detection devices [43][44][45], magnet tracker detection systems [46] and geomagnetic sensing systems [47] require them to sense the magnetic fields in three directions simultaneously, which invigorates the development of three-axis ME based magnetic sensors. Notably, a three-axis ME based magnetic sensor was earlier proposed by Shen et al [17,48] for vehicle detection.…”

Section: Introductionmentioning

confidence: 99%

Thermally stable multi-directional magnetoelectric based embedded magnetic sensor

Kumar

Chelvane

Arockiarajan

2023

Smart Mater. Struct.

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Owing to the multifunctional behavior possessed by magnetoelectric (ME) composites, they are a sought after materials for various magnetic ﬁeld sensing applications. This article proposes a three-directional magnetoelectric based embedded magnetic sensor which has been fabricated using the press-ﬁt technique. The employed fabrication method negates the use of epoxy in the ME sensor thus enabling its use at elevated temperatures in excess of 100ﬃC. To establish the relative efﬁcacy of embedded sensor over the conventional layered structure, a layered sensor has also been fabricated and tested. The fabricated sensors are tested using an experimental setup capable of producing ac and dc bias magnetic ﬁelds in three coordinate directions. Experiments are performed for various dc magnetic ﬁeld conditions including x, y, z directions and their simultaneous combinations. Under all testing conditions, the embedded sensor shows a signiﬁcantly high response as compared to its layered counterpart. Moreover, a 67 % increase in sensing distance is observed in case of embedded sensor over the layered structure. Additionally, the effect of magnetic ﬁeld generated by double magnet system and single magnet system on the sensor performance has also been demonstrated, wherein the embedded sensor is observed to be marginally affected whereas the layered sensor is adversely affected. Finally, similar measurements are performed at elevated temperatures up to 100ﬃC and it is observed that the novel embedded sensor has reliable sensing capabilities in aggravated thermal environments even in excess of 100ﬃC, whereas, the layered sensor loses its sensing capabilities above 50ﬃC. Thus, the proposed 3-directional embedded magnetic sensor offers a better response under all conditions of magnetic ﬁeld and temperature over the layered counterpart and can thus be a reliable alternative for the latter.

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