A keyless access system for a motor vehicle, which includes a portable signal generator for access to one or more doors or flaps of the motor vehicle, wherein the signal generator transmits an enable signal to a receiver unit, mounted on the motor vehicle, by a short-range radio link. The receiver unit permits access to one or more doors or flaps if it is determined that the enable signal is valid and a distance criterion which represents a distance between the signal generator and the motor vehicle is satisfied. The distance criterion results from a comparison of a weighted reception field strength of the short-range radio link between the signal generator and the receiver unit with a threshold value.
SCHLÜSSELLOSES ZUGANGSSYSTEM FÜR EIN KRAFTFAHRZEUG UND VERFAHREN ZUR ORTUNG EINES SIGNALGEBERS DES ZUGANGSSYSTEMS
KEYLESS ACCESS SYSTEM FOR A MOTOR VEHICLE, AND METHOD FOR LOCATING A SIGNAL TRANSDUCER OF THE ACCESS SYSTEM
SYSTÈME D'ACCÈS SANS CLÉ POUR VÉHICULE AUTOMOBILE ET PROCÉDÉ DE LOCALISATION D'UN GÉNÉRATEUR DE SIGNAL DU SYSTÈME D'ACCÈS
2019-01-30
Patent
Electronic Resource
German
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