Coded data generation or conversion – Digital pattern reading type converter – Optical
Patent
1997-01-22
2000-06-20
Gaffin, Jeffrey
Coded data generation or conversion
Digital pattern reading type converter
Optical
318640, 341 11, H03M 122
Patent
active
060782730
ABSTRACT:
The present invention provides a method and apparatus for monitoring an infusion pump (10). The method and apparatus provides an encoder (101) which is used with a motor (65) of the infusion pump (10) and a monitoring method which effectively provides rotational directional information. The present invention utilizes a state transition of a first switch (111) indexed against a constant signal from a second switch (113) corresponding to the center of a flag (117) or sector (119).
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Allen Tim
Hutchins Geoffrey
Baxter International Inc.
Gaffin Jeffrey
Huynh Kim N.
Kowalik F. C.
Schaafsma P. E.
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