Air bubble detector

G - Physics – 08 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

340/140.1, 340/1

G08B 21/00 (2006.01) A61M 5/36 (2006.01)

Patent

CA 1157291

ABSTRACT OF THE DISCLOSURE Air bubbles in a transparent intravenous solution conduit are detected, regardless of whether the solution is opaque or clear, by directing a light source at the conduit and detecting light shining through the solution with a first light sensor while detecting light reflected from the interior wall of the conduit with a second light sensor. If liquid is present in the conduit, whether clear or opaque, one sensor will see a low light level while the other sees a high level. If air is present, both sensors see a high light level. By EXCLUSIVE-OR'ing the outputs of the two sensors, a logic signal is obtained which is high only when the presence of liquid in the conduit is being detected. Means using two sensor assemblies spaced axially along the conduit, and a counter associated with each, are also provided to allow passage of minor air bubbles, and to provide a backup signal representative of a predetermined volume of air passing either assembly independently of the other.

379943

LandOfFree

Say what you really think

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

Rating

Air bubble detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Air bubble detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air bubble detector will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-369647

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