Adjustable Optical Sensor Alignment for Biological Feature Detection
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Solution Overview
Problem
Current biological feature detection methods using light reflection theory struggle with accurate monitoring due to a fixed relative position between light emitters and receivers, limiting the ability to adjust for varying biological tissue conditions.
Innovation Solution
A biological feature detection apparatus with an adjustable relative position and angle between a light emitting unit and a light receiving unit, allowing for flexible placement and alignment to improve detection accuracy, featuring a light guiding unit and optical shielding to enhance light processing and prevent direct transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the relative position between light emitter and light receiver is kept constant, then the device structure is simple, but accurate monitoring of biological features cannot be achieved
Solution Approach 1:
The patent applies the dynamics principle by making the relative position between the light emitter and light receiver adjustable rather than fixed. The light receiver can be positioned at different locations relative to the light emitter along the light propagation path, allowing the system to adapt to different biological tissue conditions and optimization requirements, thereby improving detection accuracy without excessive complexity
Solution Approach 2:
The patent changes the spatial parameter (relative position and angle) between the light emitter and light receiver to optimize detection accuracy. By adjusting the distance and angular relationship between these components, the system can achieve better signal quality for biological feature monitoring while maintaining a relatively simple overall structure
2Measurement precision
If the relative angle between light emitter and light receiver is fixed, then the alignment process is simple, but detection accuracy is limited
Solution Approach 1:
The patent makes the angular relationship between the light emitter and light receiver adjustable, allowing the light receiver to be positioned at different angles relative to the light emission direction. This dynamic positioning capability enables optimization of light signal reception for different biological tissue geometries and detection requirements
Solution Approach 2:
The patent adjusts the angular parameter between the light emitter and light receiver to optimize detection accuracy. By varying the angle at which the light receiver captures the reflected or transmitted light, the system achieves better measurement precision for biological features while maintaining reasonable operational simplicity
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 accurate monitoring of biological features like heart rate and blood oxygen by allowing for optimal positioning and alignment of light units, improving signal quality and detection accuracy.
Implementation Method 1
the incident light is reflected under effects (absorption and diffusion) of the blood in the tissue
Implementation Method 2
the incident light is reflected under effects (absorption and diffusion) of the blood in the tissue
Implementation Method 3
the light receiving unit is configured to receive the light and perform a photoelectric conversion to generate an original electrical signal for biological feature detection
Data Source
AI summary
Embodiments of the present application provide a biological feature detection apparatus. The detection apparatus includes: a light emitting unit and a light receiving unit. The light emitting unit is configured to emit light to a detection surface of a biological tissue, the light emitted by the light emitting unit being processed by the biological tissue and then transmitted to the light receiving unit, the light receiving unit is configured to receive the light and perform a photoelectric conversion to generate an original electrical signal for biological feature detection, and at least one of the adjustable relative position and relative angle is defined between the light emitting unit and the light receiving unit. As such, accurate monitoring of the biological feature is achieved.