Patent ID: 9503620
Filing Date: 2016-11-22
CPC Classification: G06K,G08B,H04N

Claim Text:
1. A method for evaluating a security situation in a building, the building having accommodation areas with access authorization for authorized persons, which comprises the steps of: determining a first current count of persons physically present in at least a partial region of the accommodation areas via a radio network containing a plurality of radio stations disposed spatially distributed in a ceiling, wall or floor region, an influencing of a radio field of the radio stations between one another by the persons physically present there is evaluated, the plurality of radio stations configured to transmit in a microwave frequency range selected for a high radio absorption by human bodies; determining in each case, a second current count of identifiers, read by radio frequency identification (RFID) reading devices, of RFID transponders, the identifiers being carried by the authorized persons in compliance with regulations and the RFID reading devices also being disposed there spatially distributed in the ceiling, wall or floor region; and determining and outputting an indicator for evaluating a current security situation in the building, based on the second current count of the identifiers and the first current count the persons; determining a current total person count at a higher level based on influencing of the radio field by the persons present, in a plurality of overlapping radio networks; and determining a current total identifier count at a higher level based on all the identifiers detectable there; performing at least one of: outputting a further signal if the second current count of the identifiers is recognized as being non-valid and exceeds a pre-determined further comparison value.