Control device responsive to infrared radiation emitted from...

Details Control device responsive to infrared radiation emitted from... Control device responsive to infrared radiation emitted from...

G - Physics

01

N

315/71, 340/124.

G01N 21/84 (2006.01)

Patent

CA 1223319

CONTROL DEVICE RESPONSIVE TO INFRARED RADIATION ABSTRACT OF THE DISCLOSURE An improved device for controlling a current line to such items as interior lighting and room air conditioners includes a pyroelectric infrared detector having its own preamplifier to produce an output signal in response to a person moving within the field of view of the detector. The output signal is successively amplified in two stages and sent to a control unit to close a current line. A timing circuit is included to end the signal to the control unit when no motion of a person is sensed within a pre- determined time period.

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