By Asaf Grosz, Michael J. Haji-Sheikh, Subhas C. Mukhopadhyay
ISBN-10: 3319340689
ISBN-13: 9783319340685
ISBN-10: 3319340700
ISBN-13: 9783319340708
This publication gathers, for the 1st time, an summary of the majority of the magnetic sensors that exist this day. The ebook is supplying the readers a radical and finished wisdom from fundamentals to cutting-edge and is accordingly appropriate for either newbies and specialists. From the extra universal and renowned AMR magnetometers and as much as the lately built NV middle magnetometers, every one bankruptcy is describing a selected form of sensor and offering the entire details that's essential to comprehend the magnetometer habit together with theoretical historical past, noise version, fabrics, electronics, layout and fabrication innovations, etc.
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Extra info for High Sensitivity Magnetometers
Example text
12. The relation between fluxgate noise and the demagnetizing factor due to Eq. 9 as proposed by Primdahl was later proved for large ring-core sensors [25]—the typical dependence is depicted in Fig. 9 (right). The increased noise at very low D values appears due to the fact that a smaller cross-section causes loss of SNR, assuming the existence of external induced noise coherent to the 2nd harmonic. Fig. 9 (Left) Calculated demag. factor D of 10-mm ring [25]. 2 51 Core Material and Processing Historically, the core materials were iron [1] or ferrites [3].
J. 10, 255–260 (2010) 5. E. Paperno, A. Grosz, A miniature and ultralow power search coil optimized for a 20 mHz to 2 kHz frequency range. J. Appl. Phys. 105, 07E708 (2009) 6. V. Korepanov, R. Berkman, L. Rakhlin, Y. Klymovych, A. Prystai, A. Marussenokov, M. Afanassenko, Advanced field magnetometers comparative study. Measurement 29, 137– 146 (2001) 38 K. Tashiro 7. J. S. Edelstein, Magnetic sensors and their applications. IEEE Sens. J. 6, 631–649 (2006) 8. S. Tumanski, Induction coil sensors—a review.
Although the sensitivity in the region III is decreased, it provides a wide and flat frequency response. Figure 18 shows an example of the measured frequency response. The coil is Coil-01, and the 24 K. Tashiro Fig. 17 Sensitivity with a conventional and frequency compensation transimpedance amplifier Fig. 18 Measured sensitivity of the induction magnetometer Coil-01 as a function of the frequency [38]. Cross and circle plots represent the results with a conventional and frequency compensation transimpedance amplifier, respectively electronics is the conventional or frequency compensation transimpedance amplifier.
High Sensitivity Magnetometers by Asaf Grosz, Michael J. Haji-Sheikh, Subhas C. Mukhopadhyay
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