Title:
NDIR GLUCOSE DETECTION IN LIQUIDS
Document Type and Number:
WIPO Patent Application WO/2018/098058
Kind Code:
A8
Abstract:
A glucose sensor measures glucose molecules in vivo through use of NDIR in which scattering noise is reduced and Absorption Interference Noise (AIN) is suppressed with a reflection technique. Electronics are used to provide an output of glucose concentration glucose in a liquid sampling matrix after it has been determined that a calibration curve is valid after signal processing is used to obtain average ratio values for reflected signal/reference channels and interference/reference channel obtained after a pulsed beam from signal, interference and reference sources is directed at an inclined angle to a normal of a spot of the liquid sampling matrix. The signal, interference and reference sources are each pulsed at a preselected frequency of at least N Hz which is sufficiently fast so that a given molecule of glucose or interfering molecule will not pass in and out of the liquid sampling matrix within the preselected frequency.
Inventors:
WONG JACOB Y (US)
CAMPBELL THOMAS (US)
CAMPBELL THOMAS (US)
Application Number:
PCT/US2017/062475
Publication Date:
June 20, 2019
Filing Date:
November 20, 2017
Export Citation:
Assignee:
AIRWARE INC (US)
International Classes:
G01J3/42; G01N21/31
Attorney, Agent or Firm:
ANDERSON, Roy (US)
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