Energy Harvesting Devices for Low Frequency Applications
Executive Summary One of the major obstacles limiting the development of deployable integrated sensing and actuation solutions in smart structures is the scarcity of power. As the power consumption, speed and size of integrated circuits decrease it becomes increasingly feasible to embed electronics in everyday objects to enhance their performance. Current energy harvesting methods usually require access to light, heat or vibration. Energy in low frequency vibrations is commonly, but not accessible with current energy harvesting methods. It is advantageous to have a device capable of harvesting energy from low frequency sources. Description of Technology Michigan State University has developed an energy harvesting device for low frequency applications. The energy harvesting device incorporates a buckling structure that is arranged so that multiple transitions are created in response to a deformation. A piezoelectric device is connected to the structure. The device transforms low frequency deformation into higher frequency vibrations where piezoelectric energy harvesting is possible. In this arrangement, the device is able to respond to deformations occurring at a frequency less than one Hertz. Key BenefitsHarness energy from a low frequency source Applicationscivil and mechanical structures monitoringmachinery/equipment monitoringhome automation surveillance and securityagricultural managementlong range asset tracking Patent Status: Patent Pending US 2014-0070670 Licensing Rights Available Full licensing rights available Inventors: Rigoberto Burgueno, Nizar Lajnef Tech ID: TEC2012-0060
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