Energy recovery device for autonomous intracorporeal capsule

摘要

The capsule has an energy recovery transducer comprising a capacitor electrode in form of comb coupled to a movable actuation member that has a deformable element (42) deformed in response to effect of pressure variations in a medium. The electrode and another capacitor electrode have surfaces separated by dielectric gap to define a capacitor. An energy storage and management module is powered by the transducer based on a reduction in the surfaces and/or an increase of the gap. The element is coupled to the comb by a mechanical high-pass filter (68) for pressure variations in the medium.