Multi-Wavelength Optical Detection for Wrist Physiological Monitoring
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Solution Overview
Problem
Conventional optical detection devices, such as smart wearables, face challenges in achieving sufficient signal intensity for physiological characteristic identification when placed on the wrist or neck, as these areas do not provide adequate optical signal intensity for effective Oxygenated Hemoglobin detection.
Innovation Solution
The optical detection device employs a substrate with multiple light sources emitting optical signals of different wavelengths (ranging from 600 to 630 nm) and an optical receiver to enhance signal intensity and accuracy for physiological characteristic identification, either using a single signal, symmetrically arranged dual signals, or triple signals with distinct wavelengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional optical detection devices use single wavelength light sources (660 nm, 880 nm or 940 nm), then the device structure is simple, but the signal intensity is insufficient for physiological characteristic identification at wrist or neck locations
Solution Approach 1:
The patent combines multiple light sources with different wavelengths (660 nm, 880 nm, and 940 nm) into a single detection device. This merging of multiple light sources allows the device to emit composite optical signals that provide sufficient signal intensity for physiological characteristic identification at wrist or neck locations, while maintaining a unified device structure.
Solution Approach 2:
The patent uses a composite light source configuration that integrates multiple wavelengths (660 nm red light, 880 nm infrared light, and 940 nm infrared light) to create a composite optical signal. This composite approach leverages the complementary advantages of different wavelengths to achieve sufficient signal intensity and detection accuracy that single wavelength sources cannot provide alone.
2Measurement precision
If multiple light sources with different wavelengths are used to improve detection accuracy, then the measurement precision improves, but the device complexity increases
Solution Approach 1:
The patent merges multiple light sources with different wavelengths (660 nm, 880 nm, and 940 nm) into a single integrated detection device. This combination allows the system to achieve high measurement precision through multi-wavelength analysis while maintaining a unified device structure, avoiding the need for separate detection devices for each wavelength.
Solution Approach 2:
The detection device is designed with multi-functionality by incorporating multiple wavelength light sources (660 nm for oxygenated hemoglobin detection, 880 nm for deoxygenated hemoglobin detection, and 940 nm for additional physiological parameters) that can simultaneously or selectively perform different physiological measurements, enhancing measurement precision without requiring multiple separate devices.
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 significantly improves the detection efficiency and accuracy of physiological characteristics by increasing signal intensity and providing a preferred result for identification, even in areas like the wrist or neck where conventional devices struggle.
Implementation Method 1
The light source is adapted to emit an optical signal having a wavelength ranged of 600 to 630 nm
Implementation Method 2
an optical receiver adapted to receive and analyze the optical signal for acquiring a result of the physiological characteristic identification
Data Source
AI summary
An optical detection device for physiological characteristic identification includes a substrate, a light source and an optical receiver. The light source includes a plurality of first lighting units and a plurality of second lighting units symmetrically arranged on the substrate. The optical receiver is disposed on the substrate and adapted to analyze optical signals emitted by the light source for acquiring a result of the physiological characteristic identification.