The invention relates to an electromagnetic device (10) comprising: a coil; a main magnet pivoting about an axis XX′, a first and second yoke (50, 50′), a first and second stabilizer magnet (41, 42), as well as a first and second actuator magnet (31, 32) arranged to slide along the axis YY′ that is perpendicular to the pivot axis XX′, in such a way as to force the main magnet (30) to adopt an equilibrium position, the stabilizer magnets (41, 42) being arranged such that this sliding is accompanied by a movement of the stabilizer magnets (41, 42) so as to position one of the stabilizer magnets (41, 42) in a given position in order to limit the leaks which could occur at one of the two yokes.

An apparatus for self-generating power and a wireless switch applying same are provided. The apparatus includes a coil assembly and a permanent magnet assembly. In an initial state, left and right ends of a soft magnetic plate come into contact with a first permanent magnet and a second upper soft magnetic plate respectively to form a first closed magnetic circuit, when the soft magnetic plate is rotated relative to the permanent magnet assembly, the left and the ends of the soft magnetic plate come into contact with a first upper soft magnetic plate and a second permanent magnet respectively to form a second closed magnetic circuit, and a direction of a magnetic line of force passing through the soft magnetic plate in the first closed magnetic circuit is opposite to that of a magnetic line of force passing through the soft magnetic plate in the second closed magnetic circuit.

An apparatus for self-generating power and a wireless switch applying same are provided. The apparatus includes a coil assembly and a permanent magnet assembly. In an initial state, left and right ends of a soft magnetic plate come into contact with a first permanent magnet and a second upper soft magnetic plate respectively to form a first closed magnetic circuit, when the soft magnetic plate is rotated relative to the permanent magnet assembly, the left and the ends of the soft magnetic plate come into contact with a first upper soft magnetic plate and a second permanent magnet respectively to form a second closed magnetic circuit, and a direction of a magnetic line of force passing through the soft magnetic plate in the first closed magnetic circuit is opposite to that of a magnetic line of force passing through the soft magnetic plate in the second closed magnetic circuit.

An energy harvester article configured to associate with a ferromagnetic flywheel having gear teeth is provided and includes a magnet, a first pole piece, wherein the first pole piece includes a first pole piece first end and a first pole piece second end, a second pole piece, wherein the second pole piece includes a first portion and a second portion configured into an “L” shape, and wherein the second portion is arranged to be substantially parallel with the first pole piece and separated from the first pole piece by a distance L, and a coil, wherein the coil is configured to be wrapped around the first pole piece proximate the first pole piece second end.

An energy harvester article configured to associate with a ferromagnetic flywheel having gear teeth is provided and includes a magnet, a first pole piece, wherein the first pole piece includes a first pole piece first end and a first pole piece second end, a second pole piece, wherein the second pole piece includes a first portion and a second portion configured into an “L” shape, and wherein the second portion is arranged to be substantially parallel with the first pole piece and separated from the first pole piece by a distance L, and a coil, wherein the coil is configured to be wrapped around the first pole piece proximate the first pole piece second end.

A system for harvesting energy from airport vehicle and passenger movements is described that includes a vehicular operating area with an operating surface, a pedestrian movement area with a walking surface, a first plurality of vibration panels positioned within the operating surface of the vehicular operating area, a second plurality of vibration panels positioned within the walking surface of the pedestrian movement area, and an electricity distribution grid. Each vibration panel in the first plurality of vibration panels and each vibration panel in the second plurality of vibration panels is a piezoelectric transducer, and each piezoelectric transducer is coupled to the electricity distribution grid such that electricity produced by each piezoelectric transducer in response to vibrations from vehicle or passenger movements is routed to the electricity distribution grid.

A system for harvesting energy from airport vehicle and passenger movements is described that includes a vehicular operating area with an operating surface, a pedestrian movement area with a walking surface, a first plurality of vibration panels positioned within the operating surface of the vehicular operating area, a second plurality of vibration panels positioned within the walking surface of the pedestrian movement area, and an electricity distribution grid. Each vibration panel in the first plurality of vibration panels and each vibration panel in the second plurality of vibration panels is a piezoelectric transducer, and each piezoelectric transducer is coupled to the electricity distribution grid such that electricity produced by each piezoelectric transducer in response to vibrations from vehicle or passenger movements is routed to the electricity distribution grid.

A power generation device includes a push member configured to move back and forth in a first pushing direction and a second pushing direction to push a rotating body to move between a first stable attitude and a second stable attitude, an operation member configured to move in a first direction and a second direction, and a switching spring member arranged between the operation member and the push member. The switching spring member is configured to urge the push member in the first pushing direction to cause the rotating body to move toward the second stable attitude when the operation member moves in the first direction, and the switching spring member is configured to urge the push member in the second pushing direction to cause the rotating body to move toward the first stable attitude when the operation member moves in the second direction.

A power generation device includes a push member configured to move back and forth in a first pushing direction and a second pushing direction to push a rotating body to move between a first stable attitude and a second stable attitude, an operation member configured to move in a first direction and a second direction, and a switching spring member arranged between the operation member and the push member. The switching spring member is configured to urge the push member in the first pushing direction to cause the rotating body to move toward the second stable attitude when the operation member moves in the first direction, and the switching spring member is configured to urge the push member in the second pushing direction to cause the rotating body to move toward the first stable attitude when the operation member moves in the second direction.

An interactive electromagnetic apparatus, which includes an acting magnet assembly, a conducting magnet assembly parallel with the acting magnet assembly, an induction coil assembly arranged between the acting magnet assembly and the conducting magnet assembly, and an induction switch module, in which the acting magnet assembly includes at least two magnets arranged to space from each other. These magnets have magnetic poles face the induction coil assembly. The adjacent ones of the magnets are arranged to have opposite magnetic poles face each other. The conducting magnet assembly includes at least two magnets arranged to space from each other. These magnets have two ends having magnetic poles parallel with a moving direction. As such, the induction coil assembly generates a reverse magnetic resistance force at only one end thereof.