Optical Sensor with Contact Feedback for Non-Invasive Antioxidant Estimation
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Solution Overview
Problem
Current healthcare technologies lack effective, non-invasive methods for estimating bio-information, particularly antioxidant levels in the body, which are crucial for preventing tissue diseases associated with excessive active oxygen production.
Innovation Solution
An optical sensor system comprising a light source and photodetector pair mounted on a base substrate with a contact sensor, emitting light of specific wavelengths to estimate bio-information by analyzing optical signals and determining absorbance, with a processor preprocessing the data to provide accurate antioxidant level information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional healthcare technologies are used, then medical devices can be utilized by hospitals and inspection agencies, but small-sized wearable devices for individual use are insufficient
Solution Approach 1:
The device is segmented into functional modules: light source module, photodetector module, contact sensor module, and processor module. This segmentation enables compact arrangement while maintaining individual functionality, resolving the contradiction between small size and comprehensive healthcare capabilities
Solution Approach 2:
The device integrates multiple functions into a single wearable unit: optical signal detection for bio-information estimation, contact pressure sensing, and wireless data transmission. This multi-functionality provides hospital-grade healthcare capabilities in a compact wearable form factor
2Ease of operation
If non-invasive methods are used, then antioxidant levels can be estimated without intrusion, but measurement precision is insufficient
Solution Approach 1:
The device incorporates feedback mechanisms where the processor continuously monitors optical signals and adjusts measurement parameters based on detected variations. Contact pressure feedback ensures optimal coupling between the sensor and skin, maintaining measurement precision throughout the non-invasive measurement process
Solution Approach 2:
The system changes multiple parameters to enhance precision: uses multiple light wavelengths (blue and red) to detect different antioxidant components, varies light intensity levels, and adjusts measurement timing based on physiological cycles. These parameter variations enable precise antioxidant level estimation through non-invasive means
3Adaptability or versatility
If multiple light wavelengths are used, then comprehensive bio-information can be obtained, but device complexity increases
Solution Approach 1:
Multiple light sources emitting different wavelengths (blue LED at 450nm and red LED at 650nm) are merged into a single integrated light source module. This combined approach enables comprehensive detection of various antioxidant components while maintaining a compact, unified device structure rather than requiring separate devices for each wavelength
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
Enables non-invasive, accurate estimation of antioxidant levels, guiding users to maintain healthy levels through feedback mechanisms, thereby preventing related diseases.
Implementation Method 1
the light source and the photodetector facing each other at a predetermined distance and having an opening between the light source and the photodetector... the photodetector may be configured to obtain an optical signal based on the light emitted by the light source and passed through the object
Implementation Method 2
the base substrate may further include a pressure sensor configured to obtain a contact pressure between the base substrate and an object placed in the opening and contacting the base substrate
Data Source
AI summary
An optical sensor includes at least one pair of a light source and a photodetector, the light source and the photodetector facing each other and having an opening between the light source and the photodetector; and a base substrate disposed on or below the at least one pair of the light source and the photodetector, the base substrate including a contact sensor positioned in an area corresponding to the opening.