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Event occurrence time and frequency detection and recording apparatus

  • US 5,047,962 A
  • Filed: 06/06/1988
  • Issued: 09/10/1991
  • Est. Priority Date: 06/06/1988
  • Status: Expired due to Fees
First Claim
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1. An apparatus for detecting and recording the time and frequency of the presence of an animal at a surveillance site comprising:

  • a weatherproof housing;

    an electric power source mounted in the housing for supplying electric power to the apparatus;

    a central processing means mounted in the housing and operating a control program;

    infrared sensor means, mounted in the housing and having a field of view in the form of a planar pie-shaped sector extending radially outward from the housing and input to the central processing means, for sensing the presence of an animal at the surveillance site within the entire field of view of the sensor means;

    memory means, mounted in the housing and coupled to the central processing means, for data and control program storage;

    a clock mounted in the housing and coupled to the central processing means, the clock providing continuous clock pulses;

    display means, mounted in the housing and coupled to the central processing means, for displaying the date, time and number of separate presences of an animal sensed by the sensor means in a predetermined time period; and

    the central processing means being responsive to the control program and to the input of start date and start time data from the input means for storing the start date and start time data in the memory means, and responsive to the presence of an animal sensed by the sensor means to store in the memory means the data and time of the detected presence of an animal and responsive to the input means for recalling from the memory means and sucessively outputting to the display means for visual display the data and time of the detected presence of an animal at the surveillance site;

    wherein said central processing means establishes sucessive time periods, each having a predetermined time interval, starting from the initial start date and start time of detecting and recording and said central processing means includes means responsive only the presence of an animal sensed by the sensor means for storing in the memory means the date and start time of only the time period in which at least one animal was detected.

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