A device is disclosed, which includes: a charge portion with a plurality of piezoelectric elements embedded in a tire configured for a vehicle, a capacitor mechanically coupled to the tire and electrically coupled to the plurality of piezoelectric elements; a transmitter coil, mechanically coupled…
Provided is an apparatus for generating direct current using continuous polarization change of piezoelectric materials. For example, a piezoelectric direct current generator includes a first electrode, a polarized piezoelectric material layer disposed on a first surface of the first electrode, and…
The present invention relates to a vehicle tyre comprising a piezoelectric device, wherein the piezoelectric device comprises a layer of a piezoelectric polymer having first and second opposing sides, and a first and a second layer of conductive rubber provided adjacent to the first and second…
A system for detecting pressure and wear conditions of tires that includes a module positioned inside each wheel of a vehicle. The module includes sensors, a processor, a transmitter and a power source for powering the module. The output from the sensors in each wheel is fed to the processors of…
A device is disclosed, which includes: a charge portion with a plurality of piezoelectric elements embedded in a tire configured for a vehicle, a capacitor mechanically coupled to the tire and electrically coupled to the plurality of piezoelectric elements; a transmitter coil, mechanically coupled…
A self-powered sensing and transmitting device is provided and includes a piezoelectric generator, a carrying structure stacked with the piezoelectric generator, an encapsulation support structure including an encapsulation portion encapsulating the piezoelectric generator and the carrying…
A device is disclosed, which includes: a charge portion with a plurality of piezoelectric elements embedded in a tire configured for a vehicle, a capacitor mechanically coupled to the tire and electrically coupled to the plurality of piezoelectric elements; a transmitter coil, mechanically coupled…
A system for generating electric power from a rotating tire's mechanical energy has a piezoelectric structure and an energy storage device. The structure comprises a plurality of piezoelectric fibers embedded in a generally unidirectional fashion in an epoxy matrix. The structure is mounted on a…
Described herein is a tyre pressure monitoring system (500) that includes an energy harvesting module (510) and a computer board (540). The energy harvesting module (510) comprises an energy harvesting unit (520) having a combined vibration energy/RF energy harvester. A single sensing element is…
Realizing a high power generation capability in a non-lead interior tire power generation apparatus. The apparatus (2) includes a piezoelectric section (20) having an inorganic piezoelectric body of a perovskite type oxide represented by General Formula (PX) below; a pair of electrodes (21, 22) for…
A tire assembly with integrated power generation features includes one or more piezoelectric devices configured to generate electric charge therein upon being subjected to mechanical strains associated with flexure of tire or wheel components. The piezoelectric device may be incorporated in a…
A system and corresponding method for generating electric power from a rotating tire's mechanical energy concerns a piezoelectric power generation device associated with a power harvesting and conditioning module. The piezoelectric structure is preferably mounted within a tire structure such that…
A self-powered tire revolution counter includes a motion sensitive power generation mechanism, a power conditioner, a pulse detector, a microcontroller, and, optionally, a radio frequency (RF) transmitting device. In one exemplary embodiment, the power generation mechanism corresponds to a…
A system end corresponding method for generating electric power from a rotating tire's mechanical energy concerns a piezoelectric power generation device associated with a power harvesting and conditioning module. The piezoelectric structure is preferably mounted within a tire structure such that…
An enhanced piezoelectric wire structure includes an elongated portion of piezoelectric material, a metallic core, and an outer conductive sheath. The metallic core is substantially surrounded by the elongated portion of piezoelectric material and configured to function as a first electrode for the…
A system for the continuous determination of the interaction between a tyre (1) and the ground during the movement of a motor vehicle, the said tyre (1) comprising a casing (2), a tread (3), belt plies (6), sidewalls (4), beads (5) and at least a first sensor (7; 307; 407; 507; 607; 707; 807; 902)…
The operating voltage generation device uses a piezoelectric element (3) oscillated by the variations in the tyre pressure of a vehicle wheel upon movement of the vehicle, for providing a corresponding output voltage used for supplying an electrical component group (5). The piezoelement can be…