Person`s physical access controlling device for e.g. nuclear center, has control electronics unit determining whether pressure measurement relate to step of one or multiple persons and activating alarm in case of passage of multiple persons

摘要

The device has a carpet (1) positioned at the ground on all surface of a determined passage. The carpet has multiple pressure sensors to detect a pressure applied on the carpet by the weight of a person. A control electronics unit (3) receives information related to the pressure measurements, determines whether the measurements relate to the step of one or multiple persons and activates an alarm in case of passage of multiple persons.