Method and arrangement for driving door installations as a function of the presence of persons

• US 6,496,220 B2
• Filed: 01/12/1998
• Issued: 12/17/2002
• Est. Priority Date: 01/13/1997
• Status: Expired due to Fees

• Current Assignee: Heinrich Landert
• Original Assignee: Heinrich Landert
• Inventors: Bichsel, Martin, Landert, Heinrich
• Primary Examiner(s): Kelley, Chris
• Assistant Examiner(s): An, Shawn S.
• Application Number:
  US09/005,455
• Publication Number:
  US 20010048470A1
• Time in Patent Office: 1,800 Days
• Field of Search: 348/143, 348/152, 348/154, 348/155, 348/156, 348/153, 340/572, 340/5.62, 340/541, 340/10.5, 382/155, 382/100, 49/31, 318/286, 318/468, 318/652
• US Class Current: 348/143
• CPC Class Codes: G06V 20/52 Surveillance or monitoring of activities, e.g. for recognising suspicious objects recognising microscopic objects G06V20/69
• CPC Class Codes: G08B 13/19602 Image analysis to detect motion of the intruder, e.g. by frame subtraction
• CPC Class Codes: G08B 13/19604 involving reference image or background adaptation with time to compensate for changing conditions, e.g. reference image update on detection of light level change
• CPC Class Codes: G08B 13/19615 wherein said pattern is defined by the user
• CPC Class Codes: G08B 13/19641 Multiple cameras having overlapping views on a single scene

Abstract

The invention relates to a method and an arrangement for driving door installations as a function of the presence of person wherein the region of the door installation is continuously observed by at least one videocamera. According to the invention through the videocamera and/or suitable sensors, object motions within the space to be monitored are acquired with an analysis being carried out in conjunction with the video image of whether or not the moving object is a person. If this is the case, its location and/or direction of movement is determined and the door installation is driven as a function thereof. The videocamera is preferably disposed approximately diametrically opposite the door installation with its angle of view being directed as steeply as possible onto the region to be monitored. The videocamera is connected to an electronic image processing device.

Claims

1. A method of controlling door installations as a function of the presence of objects and persons, wherein the region of the door installation is continuously observed by at least one video camera and optional sensor comprising the steps of:

monitoring motions of said object and person within the space through said at least one video camera and optional sensor,

apprehending data from said at least one said video camera and optional sensor representative of the nature of the objects and persons moving within said space as well as their location, direction and speed of movement in relation to said space; and

analyzing the video image and optional other sensed data to determine whether the moving object is a person authorized to use the door installation and is intending to do so, and, if so, determining the location and direction and speed of movement of the moving object, and controlling the door as a function of the location and the direction and speed of movement of the object, and

wherein the space required by an object for the unhindered passage of the door installation, for example, the width of a person, is determined and thereby the matching of the opening width of the door to the object width takes place.