Design of a MEMS piezoelectric frequency-up converter for powering pacemaker from heartbeats
2022 21st International Conference on Micro and Nanotechnology for …, 2022•ieeexplore.ieee.org
In this paper, a MEMS device for harvesting energy from heartbeats is investigated. A low-
frequency Quasi-Concertina spring, characterized by a large proof-mass and low stiffness, is
used to transfer energy to four high-frequency piezoelectric beams. The system delivered a
peak voltage of 10.96 V at the impact instant. Thereafter, it still oscillates with a decreasing
amplitude, resulting in an RMS voltage of 2.45 V. A conditioning unit is then used to adapt
the harvester's output to power the pacemaker. The system outputs a DC voltage of 2.7 V …
frequency Quasi-Concertina spring, characterized by a large proof-mass and low stiffness, is
used to transfer energy to four high-frequency piezoelectric beams. The system delivered a
peak voltage of 10.96 V at the impact instant. Thereafter, it still oscillates with a decreasing
amplitude, resulting in an RMS voltage of 2.45 V. A conditioning unit is then used to adapt
the harvester's output to power the pacemaker. The system outputs a DC voltage of 2.7 V …
In this paper, a MEMS device for harvesting energy from heartbeats is investigated. A low-frequency Quasi-Concertina spring, characterized by a large proof-mass and low stiffness, is used to transfer energy to four high-frequency piezoelectric beams. The system delivered a peak voltage of 10.96 V at the impact instant. Thereafter, it still oscillates with a decreasing amplitude, resulting in an RMS voltage of 2.45 V. A conditioning unit is then used to adapt the harvester's output to power the pacemaker. The system outputs a DC voltage of 2.7 V and a current of 12.2 µA at a vibration of 0.3 m/s² at 29 Hz.
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