A Main-Auxiliary Structured Resonant Galvanometer for Noninvasive Passive Dual-Frequency Detection

Wang, Xinyu; Han, Hongxiang; Wang, Dong F.

doi:10.1109/tim.2023.3329159

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2024

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Cited by 2 publications

References 43 publications

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Developing MEMS Electric Current Sensors for End-use Monitoring of Power Supply: Part XIII - Analytical Study on Thermoelastic Damping for Structural Optimization Applicable to Resonant Galvanometers

Fang,

Han,

Wang

et al. 2024

2024 Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS (DTIP)

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Developing MEMS Electric Current Sensors for End-use Monitoring of Power Supply: Part XIII - Analytical Study on Thermoelastic Damping for Structural Optimization Applicable to Resonant Galvanometers

Fang,

Han,

Wang

et al. 2024

2024 Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS (DTIP)

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Neuromorphic alternating current sensing using piezoelectric resonators and physical reservoir computing

Nishimura,

Fujimura,

Yoshimura

2024

Jpn. J. Appl. Phys.

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Non-contact current sensors are valuable because they can safely measure alternating current without interrupting the circuit. However, current sensors utilizing Hall elements or coils are only available for single wires, and piezoelectric resonator-based sensors have difficulty achieving both high sensitivity and linearity. To address this issue, we propose a novel approach, that is, the use of piezoelectric current sensors as nodes for physical reservoir computing (physical RC), allowing us to utilize nonlinear regions. To improve the sensitivity and short-term memory required by physical RC, a piezoelectric resonator with a quality factor of 75 was realized by employing a tuning fork structure. Nonlinearities were also introduced by analog circuits. The results of the benchmark tests indicate that the device worked as a physical RC and that it successfully predicted unknown current values from the results of training at three levels of current.

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A Main-Auxiliary Structured Resonant Galvanometer for Noninvasive Passive Dual-Frequency Detection

Cited by 2 publications

References 43 publications

Developing MEMS Electric Current Sensors for End-use Monitoring of Power Supply: Part XIII - Analytical Study on Thermoelastic Damping for Structural Optimization Applicable to Resonant Galvanometers

Developing MEMS Electric Current Sensors for End-use Monitoring of Power Supply: Part XIII - Analytical Study on Thermoelastic Damping for Structural Optimization Applicable to Resonant Galvanometers

Neuromorphic alternating current sensing using piezoelectric resonators and physical reservoir computing

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