US 11,854,321 B2
Access control method for persons and system for carrying out the method
Martin Haslinger, Grödig/Salzburg (AT); Walter Lechner, Grödig/Salzburg (AT); and Martin Haidacher, Grödig/Salzburg (AT)
Assigned to SKIDATA GMBH, Grödig/Salzburg (AT)
Filed by SKIDATA GmbH, Grödig/Salzburg (AT)
Filed on Oct. 15, 2021, as Appl. No. 17/502,435.
Claims priority of application No. 20202025 (EP), filed on Oct. 15, 2020.
Prior Publication US 2022/0122390 A1, Apr. 21, 2022
Int. Cl. G07C 9/00 (2020.01); H04B 17/327 (2015.01)
CPC G07C 9/00309 (2013.01) [H04B 17/327 (2015.01); G07C 2009/0042 (2013.01); G07C 2009/00357 (2013.01); G07C 2009/00507 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An access control method in an access control system for persons,
wherein the access control system comprises at least two access control devices (16) that are respectively assigned to an access point,
each access control device (16) has at least two antennas (1, 2, 8, 9, 10, 11), which are arranged at the access point in a defined manner and emits into the access area (3), i.e., into an area of predefined length and width, through which a visitor has to pass when attempting to gain access and which due to its dimensions can only accommodate one person,
all antennas (1, 2, 8, 9, 10, 11) of an access control device (16) lie on an antenna plane,
the at least two antennas (1, 2, 8, 9, 10, 11) transmit beacons containing a unique access point ID, which positively identifies the access point at which the at least two antennas (1, 2, 8, 9, 10, 11) are arranged, and a unique antenna ID within predefined intervals,
the beacons received by a mobile device (14) are analyzed based on the RSSIs (Received Signal Strength Indicator), whereby based on the received signal strength of the beacons the distance of the mobile electronic device to the antenna plane is determined by means of bilateration,
an ID, which is stored in the mobile device (14) and to which an access authorization can be explicitly assigned, and the received access point ID of an access control device (16) are transmitted to a server (15) or to the access control device (16) in order to analyze the validity of the access authorization assigned to the ID if the determined distance of the mobile device (14) to the at least one antenna (1, 2, 8, 9, 10, 11) of this access control device (16) falls short of a threshold value, and
access is granted if the access authorization is valid for the access point ID.