ELECTRONIC DOOR LOCKING SYSTEM FOR MOTOR VEHICLES

摘要

An electronic door locking system (1) for motor vehicles has a key (2) with appropriate electronic means (14) for the intended use and a receiver located on the motor vehicle. The key (2) exchanges with the receiver a coded operating signal (7, 8). Means for decoding the coded operating signal (7, 8) are provided, so that when the evaluation of the operating signal (7, 8) has a positive result, a controller (20) for changing the locking state, i.e. locking or unlocking the car doors (12), is actuated. At least one signal processing device (6) that contains the receiver is arranged on a car door (12). This signal processing device (6) has inductive, optical or similar means for contactlessly transmitting energy to the key (2). Energy transmission sets in when the key (2) nears the corresponding car door (12). The electronic means (14) of the key are activated when they receive said energy and may thus be put to their intended use.