Method for the remote operation of doors, especially motor-vehicle doors,申请号DE19843446245-传众专利搜索

Method for the remote operation of doors, especially motor-vehicle doors

申请公布号：DE3446245(A1)

申请号：DE19843446245

申请日期：1984.12.19

申请公布日期：1986.06.19

申请人：

WESTFAELISCHE METALL INDUSTRIE KG HUECK & CO

发明人：HOLLE,HEINZ-THEO,DIPL.-ING.;SANTELMANN,KARL-HEINZ

分类号：G07C9/00;(IPC1-7):E05B49/00;E05B47/00;E05B65/20

主分类号：G07C9/00

摘要：In a method for the remote operation of doors, especially motor-vehicle doors, by means of a key designed as a transmitter emitting a coded radiation when actuated and of a lock designed as a receiver for this radiation with a following comparator and actuating element, as a measure against battery failure the transmitter, whenever it is actuated, continuously tests the capacitance of the battery feeding it and, when actuated in the event of an immediately imminent failure of the battery, emits a radiation with a second coding which changes the lock over from actuation by the transmitter to actuation by a mechanical key.