| 摘要 |
<p>The present invention relates to an energy harvester having an adjustable resonant frequency. The energy harvester according to the present invention comprises: an induction coil unit wound around a lower housing; a magnet unit configured to vibrate vertically inside the induction coil unit by means of external vibration; an upper housing coupled to the lower housing; a stopper fixed to the upper end of the upper housing; a spring unit for resonant frequency adjustment, which is fixedly coupled to the magnet unit while being rotatably arranged on the stopper, and which is configured such that the length of an area, which is deformed in response to the external vibration, is adjusted according to the degree of rotation; and a jig unit for rotation adjustment, which is attached to the spring unit for resonant frequency adjustment, and which is rotated stepwise by a manual manipulation of a user, thereby adjusting the degree of rotation of the spring unit for resonant frequency adjustment. According to the present invention, an electromagnetic induction type energy harvester having an adjustable resonant frequency, which is effectively matched with vibration frequencies of various external vibration sources, is provided, thereby enabling device compactness, simplifying manufacturing processes, and reducing manufacturing costs.</p> |
