Patent ID: 7021132
Filing Date: 2006-04-04
Classification: B60C,H01Q

Abstract:
1. Measuring system for measuring at least one parameter that is indicative of a state of a tire of a vehicle, comprising: on each wheel, a detector having a parameter sensor and a detector antenna tuned to a defined frequency, a central data processing unit coupled by individual wire links to fixed antennas, each of the fixed antennas having an associated wheel and each of the fixed antennas being arranged near its associated wheel, the parameter sensor comprising a transponder with a capacitor for storing power, the power being transmitted to the parameter sensor of the detector from an associated fixed antenna, at least one of the associated fixed antenna and the detector antenna being a loop that is substantially centered over an axis of the associated wheel so that a communication link with the other one of the associated fixed antenna and the detector antenna corresponding to the associated wheel is substantially independent of an angular position of the associated wheel, and the detector antenna being insulated from a rim of the associated wheel when the wheel rim is made of metal, the associated wheel also carrying at least one of lateral, vertical and longitudinal acceleration measuring means, each of which is connected to the detector antenna.