Optical Sensor Path Adjuster for Non-Invasive Biological Detection
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Solution Overview
Problem
Current non-invasive methods for detecting biological information have high error probabilities compared to invasive methods, and existing portable medical devices face challenges in accurately measuring biological parameters due to environmental changes and noise interference.
Innovation Solution
A portable optical sensor system that includes a light source, a path adjuster capable of adjusting reflectance and transmittance based on electric signals, and a light receiver to differentiate between reference and measurement lights, allowing for the normalization of measurement data to improve accuracy and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If non-invasive detection method is used, then convenience and portability are improved, but measurement precision deteriorates due to high error probability
Solution Approach 1:
The patent introduces a reference light path as an intermediary element to mediate between the measurement light and the detector. The reference light path includes a reference sample that does not contain the target analyte, allowing the system to distinguish between optical path variations and actual analyte concentration changes. This intermediary reference path enables more accurate measurement by providing a baseline for comparison.
Solution Approach 2:
The system implements feedback by continuously monitoring the reference light path and using this information to compensate for environmental variations and optical path changes in the measurement channel. The processor compares the reference signal with the measurement signal and adjusts the interpretation of measurement data accordingly, reducing errors caused by external factors.
2Device complexity
If simple optical path is used, then device complexity is reduced, but reliability deteriorates due to environmental changes and noise interference
Solution Approach 1:
The optical path is segmented into distinct channels: a measurement light path that passes through the sample and a reference light path that passes through a reference sample. This segmentation allows independent optimization of each path and enables the system to isolate and compensate for environmental effects affecting each path differently, improving reliability without significantly increasing overall device complexity.
Solution Approach 2:
The system dynamically switches between measuring the reference light and the measurement light through the light receiver. This dynamic operation allows real-time compensation for environmental changes by alternating measurements and using the reference data to correct measurement data, enhancing reliability while maintaining a relatively simple device structure.
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
The system enhances the accuracy of biological parameter detection by normalizing measurement light based on reference light, reducing noise and environmental interference, thereby improving the reliability of non-invasive biological information detection.
Implementation Method 1
a light source configured to emit a light
Implementation Method 2
adjust a traveling path of the light to reflect the light at a first time
Implementation Method 3
allow the light to pass through the path adjuster at a second time
Implementation Method 4
a light receiver configured to receive a reference light among the reflected light, and receive, among the light passing through the path adjuster, a measurement light related to a target material
Data Source
AI summary
An optical sensor and a method of operating the optical sensor are provided. The optical sensor includes a light source configured to emit a light, and a path adjuster configured to adjust a traveling path of the light to reflect the light at a first time, and allow the light to pass through the path adjuster at a second time. The optical sensor further includes a light receiver configured to receive a reference light among the reflected light, and receive, among the light passing through the path adjuster, a measurement light related to a target material.