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This paper reports a novel method for passive DC current sensing without using a cord separator. In this method, a piezoelectric thin-film cantilever with a micro-magnet on its end is positioned near a power cord. The DC current in the power cord induces a magnetic field, which generates a magnetic force acting on the micro-magnet. Consequently, the piezoelectric cantilever is bent and induces an...
A bending type MEMS DC current sensor to satisfy the increasing needs of DC power supply for monitoring the electricity consumption by either one-wire or two-wire appliance cord was proposed in DTIP 2011. A linear relationship between the peak value of the impulsive output voltage and the DC current was obtained based on a macro-scale prototype device. In DTIP 2013, an oscillating type MEMS DC current...
A passive (power-less), non-contact MEMS DC electric current sensor to satisfy the increasing needs of DC power supply for monitoring the electricity consumption by either one-wire or two-wire appliance cord was proposed in our past work (DTIP 2011). In present study however, a MEMS-scale prototype DC sensor, comprised of 5 parallel PZT plates, was micro-fabricated for preliminarily examination. A...
A non-drive, non-contact MEMS DC electric current sensor to satisfy the increasing needs of DC power supply for monitoring the electricity consumption by either one-wire or two-wire appliance cord has been newly proposed. A micro magnet is integrated into the MEMS-scale DC sensor and the appropriate position for locating the micro magnet has been theoretically pinpointed. A macro-scale prototype DC...
A non-drive, non-contact MEMS DC electric current sensor to satisfy the increasing needs of DC power supply for monitoring the electricity consumption by either one-wire or two-wire appliance cord has been proposed. A micro magnet is integrated into the MEMS-scale DC sensor and the appropriate position for locating the micro magnet has been theoretically pinpointed. A macro-scale prototype DC sensor...
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