In a locking system, used for instance on a vehicle, a switch or sensor initiates the interrogation of a data storage medium via a control unit to check for access authorization. If access authorization is given, the control unit releases the locks of the locking system automatically. To improve use
In a locking system, used for instance on a vehicle, a switch or sensor initiates the interrogation of a data storage medium via a control unit to check for access authorization. If access authorization is given, the control unit releases the locks of the locking system automatically. To improve user convenience regarding the system release, at least one capacitance sensor in at least one door grip is provided. At least one first electrode of the sensor is situated in the inner shell of the door grip and a second electrode is placed in the door area opposite the grip. By applying antipole voltage to both electrodes, an electrical field is generated between the two electrodes. When a hand, which acts as a dielectric, approaches the grip, a change in the cumulative dielectric state between the two electrodes occurs. Such a change is recognized by the capacitance sensor and transformed into an electric pulse which initiates in the electrical control unit interrogation of the data storage medium. The data storage medium then sends its data to the on-board electrical control unit which compares the data received with the data stored and releases the locks of the vehicle doors if the data match.
대표청구항▼
[ We claim:] [1.] Locking system especially for motor vehicles, consisting of a lock (14), to be actuated by a grip (27) on at least one door (12), or tail gate,where the lock (14) can be switched between two different positions, namely, a secured position which makes the grip (27) inoperativeand an
[ We claim:] [1.] Locking system especially for motor vehicles, consisting of a lock (14), to be actuated by a grip (27) on at least one door (12), or tail gate,where the lock (14) can be switched between two different positions, namely, a secured position which makes the grip (27) inoperativeand another position which allows the grip (27) to operate, in which position the lock (14) is to opened by actuation of the grip (27),and in which a sensor (30-34), located near the grip (27) and connected to an electrical control unit (16), initiates the process by which a data storage medium (20), held by the operator, is interrogated for data by the electrical control unit (16);where the electrical control unit (16) is connected to a send/receiver unit (15) and transmits via this unit the data request to the data storage medium (20) held by the operator,and the data storage medium (20) transmits its data from a data unit (23) via a transmitter (21) to the send/receiver unit (15) in the vehicle,and the send/receiver unit (15) passes the data along to the electrical control unit (16),and the electrical control unit (16), in the event of a positive data identification, orders the release of the lock or locks on at least one door (12), or tail gate of the vehicle (10), whereinthe sensor (30-34) is designed as a capacitance sensor; in that at least a first electrode (30) of the capacitance sensor (30-34) is integrated into the grip (27), whereas a second electrode (31) of the capacitance sensor (30-34) is mounted near the grip (27) on the door as a structural component of the sheet metal construction of the door, so that an electrical field (32) is generated between the electrodes; and in that the capacitance between the two electrodes (30,31) can be changed by the dielectric of a human hand entering the area of the electrical field (32) and thus detected.
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이 특허에 인용된 특허 (4)
Nykerk Michael (Canoga Park CA), Alarm system for sensing and vocally warning a person approaching a protected object.
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