Products, including the access control system and access control system to control access to space for at least one

摘要

(57) Access control system [Abstract] The present invention (8), a transponder communication device (9) is connected to the transponder communication device, and comprises transmitting two coils (11, 12) at least receives the transponder signal , the associated (11) the first door (2) and the first transmission coil. Furthermore, the first drive device associated with the first transmission coil (11) and the first door (2) and (18), the first door opener first door to (2) and (23), the system, the door opener comprising (45) a logic device can be driven. Send two coils (11, 12) have a large reception range at will. Connect amplitude detection means (34, 36) followed by (12) transmitting coil of one other, and is supplied transmitted these coils by (11, 12) by the amplitude detecting means and at least (11) the first transmission coil as well as adapted to detect the amplitude of the transponder signal, the transponder signal is arranged logical unit (45) after the amplitude detecting means (34, 36) and is fed by (11) the first transmission coil by said logical unit the amplitude of detects a state larger than the amplitude of the transponder signal supplied transmission coil one other (12) at least to drive door opener the first door (2) and (23) only upon detection of this condition and characterized in that it is configured to allow.