US 7,733,043 B2Granted

Revolving door control system

AssigneeBea SA

InventorsZachary T. Casella, Michael F. Stadler, Thomas P. Schluep

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Abstract

In a method and system for controlling a revolving door that has a plurality of chambers defined by wings of a revolver, at least one imaging sensor is provided for acquiring images of a first area where the plurality of chambers rotatably pass by or through. A drive causes the revolver to rotate in a first direction from a first position where a user can enter a first chamber via the first opening. Images are acquired by the one imaging sensor and signals are acquired from a position sensor that is operative for outputting signals indicative of the angular position of the revolver. Based on the signals acquired from the position sensor, each imaging sensor or its output is disabled and/or each image acquired by each imaging sensor is ignored when each door wing is in field-of-view of the imaging sensor.

Claims20

Dependent claims

A method for controlling a revolving door comprised of a housing having a first opening, a second opening and a revolver positioned within the housing, the revolver having a plurality of door wings positioned about a rotation axis and dividing the housing into a plurality of chambers, the revolver operative for rotatably moving each chamber between the first opening and the second opening and vice versa, the method comprising the steps of:

(a) providing at least one infrared imaging sensor, the one infrared imaging sensor operative for acquiring infrared images of a first area where the plurality of chambers rotatably pass by or through;
(b) providing a drive means that is operative for rotating the revolver about the rotation axis;
(c) providing a position sensor that is operative for outputting signals indicative of the angular position of the revolver;
(d) causing the drive means to rotate the revolver in a first direction from a first position where a user can enter a first chamber via the first opening;
(e) acquiring infrared images via the at least one infrared imaging sensor and acquiring signals from the position sensor;
and
(f) based on the signals acquired from the position sensor, disabling each infrared imaging sensor or its output and/or ignoring each infrared image acquired by each infrared imaging sensor when each door wing is in its field-of-view.

4 more elements

A control system for use with a revolving door comprising a housing having a first opening, a second opening, a floor and a ceiling, and a revolver having a plurality of wings positioned about a rotation axis and dividing the housing into a plurality of chambers, the revolver positioned within the housing between the first and second openings, the revolver operative for rotatably moving each chamber within the housing, the control system comprising:

a first infrared imaging sensor for acquiring infrared images of a first area of the housing by or through which a first chamber passes;
a drive for rotating the revolver about the rotation axis;
a position sensor operative for outputting signals related to the angular position of the revolver;
and
a controller operative for processing the infrared images acquired by the first infrared imaging sensor and for determining therefrom a presence or absence of an object in the first chamber, for causing the drive means to rotate the revolver in response to a user's initiation, for detecting the angular position of the revolver via the position sensor, and for determining as a function of the signals output by the position sensor related to the angular position of the revolver when to (i) ignore infrared images acquired by the first infrared imaging sensor when each door wing is in a field-of-view thereof and/or (ii) disable the first infrared imaging sensor or its output when each door wing is in the field-of-view thereof.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/823,470Filed 27 Jun 2007 · us provisional application
Priority: 27 Jun 2006
Published: US 2008/0028682 A17 Feb 2008
Granted: 8 Jun 2010
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

E05G 5/003
Bank protection devices: entrance control
E05F 15/608
Using rotary electromotors: for revolving wings
E05F 15/74
Responsive to movement or presence of persons or objects: using photoelectric cells
E05F 2015/767
Responsive to movement or presence of persons or objects: using cameras