Exit-entry sensing apparatus

G - Physics – 08 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

340/101, 340/124

G08B 1/08 (2006.01) G08B 13/183 (2006.01)

Patent

CA 1145006

D-21981 ABSTRACT OF THE DISCLOSURE Sensing apparatus for monitoring the passage of objects, including people, through a doorway. A source of radiant energy is positioned at one side of the doorway and two spaced-apart detectors are positioned at the opposite side to receive beams of radiant energy from the source. A receiver is con- nected to each detector and produces a signal indi- cating whether the beam of radiation from the source is impinging on its associated detector or is being blocked by a passing object. Logic circuitry responds to the signals from the receivers and pro- duces a first or second output condition depending upon which beam from the source is the last one to be interrupted by a passing object. Output circuitry coupled to the logic circuitry produces a pulse at one output terminal on a transition from the first to the second output condition indicating passage of an object through the doorway in one direction and produces a pulse at another output terminal on a transition from the second to the first output con- dition indicating passage of an object through the doorway in the opposite direction.

360115

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Exit-entry sensing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Exit-entry sensing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exit-entry sensing apparatus will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-707766

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.