Patent ID: 9543759
Date: 2017-01-10
CPC Classifications: G07B,H02J,H02N

Claim:
1. An on-board unit ( 10 ) for automatic identification of a vehicle on a road user charging system, the on-board unit ( 10 ) including an identification module and a power unit ( 12 ), energy storage unit ( 14 ) being a capacitive device, power management unit ( 15 ), main components ( 17 ), and an antenna ( 18 ) for communication with a reader unit of roadside equipment ( 100 ) proximate a road in a road charging system, comprising an energy harvester ( 11 ) connected to the power unit ( 12 ) via an impedance and voltage matching module ( 13 ), the energy harvester ( 11 ) comprising at least one tunable resonant mechanical device in a material capable of generating electrical power when subjected to mechanical influence and being configured for providing at least a portion of energy required to operate the antenna ( 18 ) and main components ( 17 ) of the on-board-unit ( 10 ) for communication with the reader unit of roadside equipment ( 100 ).