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Remote patrol system

  • US 5,559,496 A
  • Filed: 05/19/1993
  • Issued: 09/24/1996
  • Est. Priority Date: 05/19/1993
  • Status: Expired due to Fees
First Claim
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1. An intrusion detection apparatus for detecting the presence of an object, comprising:

  • a. first energy projection means for projecting a first beam of energy along a first linear axis;

    b. second energy projection means for projecting a second beam of energy along a second linear axis, wherein said second linear axis is substantially parallel to said first linear axis and is spaced a predetermined separation distance therefrom;

    c. first receiving means positioned along the first linear axis at a predetermined distance from said first energy projection means, said first energy receiving means for receiving at least a portion of the first beam of energy projected by said first energy projection means, said first energy receiving means indicating an interruption in the first beam of energy when an object passes between said first energy projection means and said first energy receiving means;

    d. second receiving means positioned along the second linear axis at a predetermined distance from said second energy projection means, said second energy receiving means for receiving at least a portion of the second beam of energy projected by said second energy projection means, said second energy receiving means indicating an interruption in the second beam of energy when an object passes between said second energy projection means and said second energy receiving means;

    e. data log means coupled to said first energy receiving means and said second energy receiving means for storing data defining timing and duration of when said first energy receiving means indicates an interruption in said first beam of energy, and when said second energy receiving means indicates an interruption in said second beam of energy;

    f. processing means located remotely from said data log means for processing the data log and for providing for user interface inputs and outputs; and

    g. communication means coupled to said data log means and said processing means for transmitting the data from said data log means to said remotely located processing means.

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