A tool of Quantitative Analysis in the Near Infrared non-invasive Measurement.

摘要

Describes a low-cost means to increase the sensitivity in measuring instruments / Red LED, in the near-infrared,Using a modification of current to change the current exciter IRED Fed to each, as a function of the opacity of the individual sample to be measured.The Modification of current is part of the process medium and includes means for Measuring a Signal level for each red, An analog to Digital Converter.Based on the detected Signal level for each red,The amendment modifies the current to each IRED current to a value that is as high as possible without saturating the Analog to Digital Converter.So, by changing the excitation current of each red the maximum value.The Analytical Tool of this Invention provides high resolution without the use of expensive Electronic Circuits.It also provides a system for generating and storing an optical signature of a particular user, thereby ensuring the accuracy of the measurements taken by the instrument.