Revolving door system

A revolving door system comprising:

• a plurality of revolving door wings pivotally connected to and arranged around a central column,
• a control arrangement comprising an automatic door operator configured to cause movement of the revolving door wings in a rotation direction in a rotating state of the revolving door system between closed and opened positions, a controller and a plurality of sensors, each sensor being connected to the controller and being configured to monitor a respective zone at the revolving door system for presence or activity of a person or object,
• a securing mechanism operatively connected to the control arrangement arranged to, in an engaged state, fix the position of the revolving door wings relative the central column and, in a disengaged state, release the revolving door wings to enable pivoting of said revolving door wings relative the central column,
• wherein the revolving door system is configured to operate in a first mode wherein the securing mechanism is in the engaged state and a second mode wherein the securing mechanism is in the disengaged state,
• wherein the control arrangement is configured to cause switching from the first mode to the second mode at least based on sensor data obtained from at least one of the plurality of sensors, wherein the plurality of sensors comprises a plurality of door presence sensors for detecting when a person or object occupies a respective space near a respective revolving door wing, whereby the control arrangement is configured to cause switching from the first mode to the second mode based on sensor data obtained from at least one of the door presence sensors, wherein the control arrangement is configured to cause switching from the first mode to the second mode based on the sensor data indicating a number of persons or objects present in the respective spaces near the respective revolving door wings during a predefined time interval exceeding a predefined object number threshold value.

A method for controlling a revolving door system, the revolving door system comprising a plurality of revolving door wings pivotally connected to and arranged around a central column and a control arrangement, the control arrangement comprising an automatic door operator configured to cause movement of the revolving door wings in a rotation direction in a rotating state of the revolving door system between closed and opened positions, a controller and a plurality of sensors each sensor being connected to the controller and being configured to monitor a respective zone at the revolving door system for presence or activity of a person or object, the revolving door system further comprises a securing mechanism operatively connected to the control arrangement arranged to, in an engaged state, fix a position of the revolving door wings relative the central column and, in a disengaged state, release the revolving door wings to enable pivoting of said revolving door wings relative the central column,

• the method comprising:
• operating in a first mode of the revolving door system in which the securing mechanism is in the engaged state,
• stopping the movement of the revolving door wings in response to a person or object occupying a space adjacent to a revolving door wing and in front of said revolving door wing relative the rotation direction when the revolving door system is in the rotating state and operates in the first mode, and
• switching from the first mode of the revolving door system to a second mode of the revolving door system in which the securing mechanism is in the disengaged state, wherein the switching from said first mode to said second mode is at least based on sensor data obtained from at least one of the plurality of sensors and the movement of the revolving door wings having been stopped for a time period exceeding a predefined time threshold value.