Energy harvesting device

A wireless self-powered energy-harvesting device comprising:

• a first member adapted to rotate around its central axis;
• a second member adapted to rotate around the central axis of the first member from a first end of the second member;
• an element having a slot formed through the element and a laterally raised portion, each end of the slot including a first and second recessed area, respectively;
• a first spring coupled to a portion of a first end of the first member;
• a second spring coupled to a portion of the first end of the second member;
• a first stop;
• a second stop facing the first stop;
• a third stop;
• and
• a fourth stop facing the third stop,
• wherein:
• a second end of the second member has a vertically raised pin;
• a generator axis of an energy harvester is coupled to the second member such that the rotation axis of the generator is coincident with the central axis 11;
• the vertically raised pin is adapted to engage the slot of the element;
• the element is loosely fixed at a portion of a second end of the first member;
• and
• the third and fourth stops limit an angular movement of the first member.