Patent ID: 11946307
Assignee: ASSA ABLOY ENTRANCE SYSTEMS AB
Field: Civil engineering (Other fields)
Classification: CPC E  G | IPC E  G

Claim 8:
9. A swing door entrance system comprising:
at least one swing door;
an automatic door operator for causing movements of the at least one swing door between closed and open positions; and
a control arrangement comprising:
a controller; and
a plurality of sensors, each sensor being connected to the controller and being configured to monitor a respective zone near the at least one swing door, wherein the plurality of sensors includes:
at least one activity sensor, wherein the at least one activity sensor, in a closed state or a closing state of the at least one swing door, detects when a person or object approaches the at least one swing door and triggers an opening state for opening the at least one swing door and
at least one presence sensor, wherein the at least one presence sensor detects when the person or object occupies a space near the at least one swing door towards the closed position during a closing state of the at least one swing door or towards the open position during the opening state of the at least one swing door,
wherein each sensor has an active mode and an inactive mode, wherein each sensor consumes no electric power in the inactive mode or substantially less electric power in the inactive mode than in the active mode; and
wherein the controller:
determines a current operational state of the at least one swing door among a plurality of operational states; and
in response to the at least one swing door being in an open operational state, causes the at least one activity sensor to be in the active mode and the at least one presence sensor to be in the inactive mode,
wherein the at least one presence sensor comprises a first door presence sensor to detect when the person or object occupies a first space near a first side of the at least one swing door when the swing door is being moved towards the open position and a second door presence sensor to detect when the person or object occupies a second space near a second side of the at least one swing door when the swing door is being moved into the second space towards the closed position and,
wherein the second door presence sensor detects that the person or object in the second space when the swing door is being moved towards the closed position and halts or reverses of an ongoing closing movement of the at least one swing door.