Expectations are high for the development of a high-performance, compact generator that converts vibrations into electrical energy. Prof. Hiroki Kuwano’s group in collaboration with Sendai Smart Machines Co., Ltd., has developed a high-output micro autonomous generator (micro energy harvester) that converts surrounding vibrations into electrical energy.
This device is constructed using a SUS (stainless steel) substrate, which offers excellent mechanical strength as a vibrating body, resulting in superior mechanical properties and durability. Furthermore, the developed energy harvester is not only smaller and lighter than existing vibration power generation devices but also achieves a power generation output of over 1mW at a low acceleration of 0.01G (approximately 0.1m/s²). At an acceleration of 1G, it enables a power generation output of over 10mW. Additionally, using the same structure as the aforementioned energy harvester, we have developed an ultra-low-frequency vibration sensor with a vibration frequency of 1Hz or less.
Moving forward, we will pursue commercialization at Sendai Smart Machines Co., Ltd. as a sensor node capable of driving sensors and other devices without relying on batteries or commercial power sources.
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