Intelligent autoclose door

  • US 10,385,606 B2
  • Filed: 10/16/2015
  • Issued: 08/20/2019
  • Est. Priority Date: 10/27/2014
  • Status: Active Grant
First Claim
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1. An auto-close door system for closing an area at least partially defined by a frame, said auto-close door comprising:

  • (A) a motorized driving mechanism having a motor suitable for moving a leading edge of a shutter in a first direction (α

    ) to close said area defined within said frame and in a second direction (β

    ) to open said area;

    (B) at least one ofa a wave detection cell suitable for detecting the presence of an obstacle within the area defined by the frame;

    orb an impact detector suitable for detecting an impacting event with the leading edge of the shutter; and

    (C) a processing unit (CPU) programmed to carry out the following operations;

    (a) upon opening the area a first time by moving the leading edge of the shutter in said second direction (β

    ), maintain the area open for an opening time, t1, after which(b) close the shutter,(c) record whether the obstacle or the impacting event is detected by the wave detector or the impact detector, upon closing the shutter;

    (d) count a number, n, of the obstacles and the impacting events detected during a number, N, of repetitions of the cycle defined by steps (a) to (c), wherein N≥

    2 and if an event frequency n/N>

    Vref,1, wherein, Vref,1, is a first control ratio, then the opening time, t1, is prolonged to a time, t2=t1

    t2, wherein Δ


    0; and

    (e) Repeat steps (a) to (d) with the values t1 or t2 determined in step (d).

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