Wavelength Centroid Detection Sensor Apparatus
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current detection techniques for external stimuli, such as analytes or electromagnetic fields, rely on intensity-based measurements that require complex and costly readout systems, often necessitating multiple light sources and detectors, and struggle with sensitivity due to the need for wavelength referencing.
Innovation Solution
A system utilizing analyte-specific sensor materials that asymmetrically alter the spectral distribution of input light, allowing a detector to measure shifts in the centroid of the spectral distribution, eliminating the need for intensity ratio calculations and reducing system complexity by directly sensing changes in the spectral distribution without referencing other wavelengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If intensity-based measurements are used for detecting external stimuli, then detection capability is achieved, but system complexity increases and sensitivity decreases due to requiring multiple light sources and detectors
Solution Approach 1:
The patent extracts only the necessary detection function by using a single detector to measure centroid shifts directly, eliminating the need for multiple detectors and light sources required in conventional intensity-based systems. The sensor material asymmetrically alters the spectral distribution, and the detector directly measures the centroid shift, achieving simplified system architecture.
Solution Approach 2:
The patent changes the measurement parameter from intensity ratios to spectral centroid shifts. The sensor material's asymmetric spectral alteration causes the centroid to shift in response to analyte concentration, and this centroid position becomes the direct measurement parameter, improving sensitivity while reducing system complexity.
2Measurement precision
If wavelength referencing is implemented in detection systems, then measurement accuracy is improved, but the system requires additional components and becomes more costly
Solution Approach 1:
The system uses self-referencing through the asymmetric spectral alteration property. The sensor material itself provides the reference framework by creating an asymmetric spectral shape whose centroid position directly indicates analyte concentration, eliminating the need for external wavelength referencing systems.
3Reliability
If multiple light sources are used for detection, then detection reliability is improved, but cost and system complexity increase
Solution Approach 1:
A single light source serves multiple functions: it provides the illumination needed for detection and its spectrum is asymmetrically altered by the sensor material to encode the measurement information. The single detector then measures the centroid shift, making the system universally functional with minimal components.
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 enables highly sensitive and cost-effective detection of external stimuli, improving sensitivity and reducing system complexity by directly measuring spectral shifts, thus eliminating the need for expensive readout units and additional light sources.
Implementation Method 1
sensor material arranged to interact with input light and to asymmetrically alter a spectral distribution of the input light in response to presence of an external stimulus
Implementation Method 2
A detector is configured to sense the altered input light and to generate at least one electrical signal comprising information about a shift in the centroid of the spectral distribution
Data Source
AI summary
Sensor material is arranged to interact with input light and to asymmetrically alter a spectral distribution of the input light in response to presence of an external stimulus. A detector is configured to sense the altered input light and to generate at least one electrical signal comprising information about a shift in the centroid of a spectral distribution of the altered input light relative to a centroid of the spectral distribution of the input light.