Noninvasive blood glucose testing device based on human-eye iris reflection aqueous humor near infrared spectrum

Abstract

The invention discloses a noninvasive blood glucose testing device based on human-eye iris reflection aqueous humor near infrared spectrum. The noninvasive blood glucose testing device comprises a halogen tungsten lamp, a band-pass filter, a gazing target, a near infrared spectrometer, a data processing module, a human-eye aqueous humor glucose content near infrared spectrum predicting mathematic model module and an LED screen. Continuous near infrared light beams generated by the halogen tungsten lamp pass the band-pass filter and are obliquely injected into human eyes; the continuous near infrared light beams pass human corneas and are subjected to aqueous humor transmission and iris reflection, and the emergent near infrared light contains the glucose content information in aqueous humor; the near infrared spectrometer collects and analyzes the emergent near infrared light to obtain the spectrum data information of the emergent near infrared light and transmits the spectrum data information into the data processing module; the data processing module preprocesses the spectrum data information and transmits the preprocessed data into the human-eye aqueous humor glucose content near infrared spectrum predicting mathematic model to obtain an accurate blood glucose value, and the accurate blood glucose value is displayed on the LED screen. The noninvasive blood glucose testing device has the advantages that the signal-to-noise ratio of the incident signals of the near infrared spectrometer is increased, and the accuracy of blood glucose testing is increased.

Description

technical field [0001] The invention belongs to the field of biological tissue parameter detection, and relates to a non-invasive blood sugar detection device based on the near-infrared spectrum of aqueous humor reflected by the iris of the human eye. Background technique [0002] Diabetes mellitus is a metabolic disease characterized by hyperglycemia caused by defects in insulin secretion or biological action. It is one of the most important chronic non-communicable diseases currently threatening human health worldwide. Currently, most self-monitoring glucometers use a minimally invasive method of blood glucose testing that is both painful for the patient and increases the risk of infection. [0003] Chinese patent 201519152.1 discloses a "non-invasive blood sugar detection system", which includes a light source module, a light transmission module, a light detection module and a data processing module. The system can detect blood sugar in either transmission or reflection....

AI Technical Summary

Problems solved by technology

Existing non-invasive testing instruments mostly select fingers, earlobes, palms and other parts as detection objects. Although these parts contain blood sugar composition information, the measurement accuracy is very low due to the complexity of its tissue composition and the great influence of body temperature and human body function status. Difficult to guarantee

[0004] In the article "Non-invasive glucose determination in the human eye", Wolfgang Schrader from the University of Wurzburg in Germany took aqueous humor as the detection object and established a non-invasive blood glucose detection system. They chose the light reflected from the lens surface as the detection spectrum, but due to The reflectivity of the lens is very low, so the signal-to-noise ratio of the acquired spectral signal is low, and the detection accuracy is greatly affected

[0005] Existing non-invasive blood glucose detection devices are bulky, have low detection accuracy, and are relatively expensive

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