High precision MI sensor with low energy consumption driven by low-frequency Wiegand pulse
This study introduces a new method to drive high-precision magneto-impedance (MI) sensors with low power consumption using a Wiegand sensor to replace the oscillator circuits of the MI sensor. We studied the characteristics of an MI sensor driven by low-frequency pulses and concluded that pulses wit...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2023-02-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/9.0000374 |
| _version_ | 1827993370843152384 |
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| author | Ruixuan Yao Yasushi Takemura Tsuyoshi Uchiyama |
| author_facet | Ruixuan Yao Yasushi Takemura Tsuyoshi Uchiyama |
| author_sort | Ruixuan Yao |
| collection | DOAJ |
| description | This study introduces a new method to drive high-precision magneto-impedance (MI) sensors with low power consumption using a Wiegand sensor to replace the oscillator circuits of the MI sensor. We studied the characteristics of an MI sensor driven by low-frequency pulses and concluded that pulses with a fast rise time and small excitation current are necessary to induce a significant MI effect. The Wiegand sensor induced 10 Hz low-frequency pulse voltages of approximately 12 V and a constant width of 20 μs when an alternating magnetic field of 5 mT/μ0 alternating magnetic field was applied. A fast rise-time-shaping circuit was designed to shape the Wiegand pulses with a fixed amplitude and rise time of less than 100 ns. The MI sensor exhibited a good output linearity of 0.04 mV/μ0T for detecting magnetic field in the range of ±150 μT when Wiegand pulses of amplitude 1 V were supplied. The power consumption of the MI sensor was reduced from milliwatts (mW) to microwatts (μW) and its usage time was extended by 300% compared to that of the previous design. This newly designed MI sensor is suitable for use in bio-magnetic field measurements, constant vehicle detection devices, and other applications. |
| first_indexed | 2024-04-10T04:23:56Z |
| format | Article |
| id | doaj.art-7a67d668763546a785102b913f422ee7 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-04-10T04:23:56Z |
| publishDate | 2023-02-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-7a67d668763546a785102b913f422ee72023-03-10T17:26:21ZengAIP Publishing LLCAIP Advances2158-32262023-02-01132025201025201-610.1063/9.0000374High precision MI sensor with low energy consumption driven by low-frequency Wiegand pulseRuixuan Yao0Yasushi Takemura1Tsuyoshi Uchiyama2Graduate School of Engineering, Nagoya University, Nagoya 464-8601, JapanDivision of Electrical and Computer Engineering, Yokohama National University, Yokohama 240-8501, JapanGraduate School of Engineering, Nagoya University, Nagoya 464-8601, JapanThis study introduces a new method to drive high-precision magneto-impedance (MI) sensors with low power consumption using a Wiegand sensor to replace the oscillator circuits of the MI sensor. We studied the characteristics of an MI sensor driven by low-frequency pulses and concluded that pulses with a fast rise time and small excitation current are necessary to induce a significant MI effect. The Wiegand sensor induced 10 Hz low-frequency pulse voltages of approximately 12 V and a constant width of 20 μs when an alternating magnetic field of 5 mT/μ0 alternating magnetic field was applied. A fast rise-time-shaping circuit was designed to shape the Wiegand pulses with a fixed amplitude and rise time of less than 100 ns. The MI sensor exhibited a good output linearity of 0.04 mV/μ0T for detecting magnetic field in the range of ±150 μT when Wiegand pulses of amplitude 1 V were supplied. The power consumption of the MI sensor was reduced from milliwatts (mW) to microwatts (μW) and its usage time was extended by 300% compared to that of the previous design. This newly designed MI sensor is suitable for use in bio-magnetic field measurements, constant vehicle detection devices, and other applications.http://dx.doi.org/10.1063/9.0000374 |
| spellingShingle | Ruixuan Yao Yasushi Takemura Tsuyoshi Uchiyama High precision MI sensor with low energy consumption driven by low-frequency Wiegand pulse AIP Advances |
| title | High precision MI sensor with low energy consumption driven by low-frequency Wiegand pulse |
| title_full | High precision MI sensor with low energy consumption driven by low-frequency Wiegand pulse |
| title_fullStr | High precision MI sensor with low energy consumption driven by low-frequency Wiegand pulse |
| title_full_unstemmed | High precision MI sensor with low energy consumption driven by low-frequency Wiegand pulse |
| title_short | High precision MI sensor with low energy consumption driven by low-frequency Wiegand pulse |
| title_sort | high precision mi sensor with low energy consumption driven by low frequency wiegand pulse |
| url | http://dx.doi.org/10.1063/9.0000374 |
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