Spectrum Measurement Temperature Drift Correction
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Solution Overview
Problem
Current methods for non-invasive blood glucose monitoring, such as spectral analysis, face challenges in accurately accounting for temperature changes in light sources, leading to potential inaccuracies in glucose level measurements.
Innovation Solution
An apparatus and method that utilize a processor to obtain a light source temperature drift vector through regression analysis, correct the slope and offset in the measured analysis spectrum, and determine the effectiveness of driving condition changes based on light intensity, thereby reducing the effect of temperature changes on the measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If spectral analysis is used for non-invasive blood glucose monitoring, then the need for invasive finger pricking is reduced, but measurement accuracy is compromised due to temperature changes in the light source
Solution Approach 1:
The system continuously monitors the light source temperature and uses this feedback to dynamically correct the spectral measurements. The processor obtains light source temperature drift vectors through regression analysis and applies real-time corrections to compensate for temperature-induced spectral shifts, thereby maintaining measurement accuracy in non-invasive conditions
Solution Approach 2:
The system changes the operational parameters by introducing temperature compensation variables. By obtaining temperature drift vectors and applying correction factors based on light source temperature variations, the system adjusts the spectral analysis parameters to account for temperature effects, resolving the accuracy issue while maintaining non-invasive operation
2Measurement precision
If temperature correction is applied to the light source, then measurement accuracy is improved, but the complexity of the measurement system increases
Solution Approach 1:
The system introduces an intermediary temperature correction module that acts as a bridge between the raw spectral measurements and the final analysis. This intermediary component obtains temperature drift vectors through regression analysis and applies corrections without requiring complete redesign of the measurement system, thus improving accuracy while limiting complexity increase
Solution Approach 2:
The system replaces complex mechanical temperature stabilization mechanisms with computational correction methods. Instead of using active cooling or heating systems to maintain constant light source temperature, the system uses software-based regression analysis and spectral correction algorithms, achieving temperature compensation without mechanical complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the accuracy of non-invasive glucose monitoring by effectively correcting for temperature-induced errors, resulting in a more reliable and precise measurement of blood glucose levels.
Implementation Method 1
a light source array 110 configured to emit light signals
Implementation Method 2
a photodetector 120 configured to detect the light signals emitted by the light source array
Implementation Method 3
a processor 130 configured to obtain a light source temperature drift vector from the measured plurality of temperature correction spectra
Data Source
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AI summary
An apparatus for measuring a spectrum includes a light source array configured to emit light towards an object, a photodetector configured to detect light reflected by the object; and a processor configured to measure, using the light source array and the photodetector, a plurality of temperature correction spectra based on a temperature change of the light source array, obtain a light source temperature drift vector by analyzing the measured plurality of temperature correction spectra, measure, using the light source array and the photodetector, an analysis spectrum by using the light source array and the photodetector, and adjust the measured analysis spectrum to reduce an effect of the temperature change of the light source array by using the obtained light source temperature drift vector.