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Automatic door

  • US 5,789,887 A
  • Filed: 06/17/1996
  • Issued: 08/04/1998
  • Est. Priority Date: 12/17/1993
  • Status: Expired due to Term
First Claim
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1. Apparatus for monitoring the operation of an automatic door:

  • said automatic door including;

    at least one movable door panel member movable between at least a first position and a second position;

    a motor to move said at least one movable door panel member between at least said first and second positions;

    a motor control arrangement to control the operation of said motor;

    said motor control arrangement including at least one of an open loop control system for the control of said motor and a closed loop control system for the control of said motor;

    at least one sensor; and

    a processor for receiving and processing values from said at least one sensor and for transmitting control values to said motor control arrangement;

    said monitoring apparatus comprising;

    an arrangement to receive and retain data, relating to the operation of said automatic door, received operatively from at least said at least one sensor;

    apparatus to generate a time ordered series of values relating to the received data relating to the operation of said automatic door;

    said time ordered series of values comprising all of the following;

    at least one parameter of said at least one movable door panel member;

    at least one parameter of said motor;

    at least one parameter of said motor control arrangement; and

    at least one parameter of said at least one sensor;

    an arrangement to store said time ordered series of values in said arrangement to receive and retain;

    said arrangement to store said time ordered series of values in said arrangement to receive and retain being configured to store said time ordered series of values in said arrangement to receive and retain on a first in/first out basis;

    said arrangement to store said time ordered series of values in said arrangement to receive and retain on a first in/first out basis comprising;

    said apparatus to generate said time ordered series of values;

    apparatus to sequentially store said generated time ordered series of values in said arrangement to receive and retain;

    apparatus to generate a most recent value;

    apparatus to store said most recent value in said arrangement to receive and retain;

    apparatus to discard the oldest value stored in said arrangement to receive and retain;

    said arrangement to receive and retain comprising a non-volatile dynamic memory element;

    said time ordered series of values being generated over a determined time period of operation of said automatic door;

    apparatus to select said determined time period of operation of said automatic door over which said time ordered series of values are generated;

    a remote data acquisition station, said remote data acquisition station being distinct and substantially spatially separated from said automatic door;

    an arrangement to transmit at least some of said time ordered series of values from said arrangement to receive and retain to said remote data acquisition station;

    apparatus to generate a remote data retrieval command at said remote data acquisition station;

    apparatus to transmit said remote data retrieval command from said remote data acquisition station to said automatic door; and

    an arrangement to transmit, in response to receipt of said remote data retrieval command at said automatic door, at least some of said time ordered series of values from said automatic door to said remote data acquisition station.

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