×

Control device responsive to infrared radiation

  • US 4,346,427 A
  • Filed: 10/31/1980
  • Issued: 08/24/1982
  • Est. Priority Date: 06/29/1979
  • Status: Expired due to Term
First Claim
Patent Images

1. A device responsive to heat emanating from a human body for controlling an auxiliary current line, comprisingdetection means including an infrared detector for producing detection signals in response to infrared radiation in the frequency spectrum emitted by the human body;

  • circuit means adapted to receive said detection signals for amplifying them and producing reset signals for those detection signals resulting from movement of a body emanating infrared radiation in said spectrum;

    timing means adapted to receive said reset signals for producing a control signal after failing to receive a reset signal for a time period preselected to be longer than the time period expected between movements of a human body within the field of view of said detector; and

    control means adapted to receive said control signal for controlling said current line in response thereto.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×