Spectral Sensing Self-Calibration for Drift-Resistant Measurements
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing spectral sensing devices suffer from drifting effects due to alterations in radiation sources or detectors, leading to distorted measurement data, which require frequent manual calibration with predefined targets, complicating user interaction and accuracy.
Innovation Solution
A spectral sensing device that performs self-calibration by using modulated optical radiation to automatically correct for drifting effects, eliminating the need for predefined targets and enabling fully automated calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual calibration with predefined targets is performed, then measurement accuracy is maintained, but device complexity and user interaction requirements increase
Solution Approach 1:
The spectral sensing device performs self-calibration by automatically detecting and compensating for drift effects using its own measurement capabilities, eliminating the need for external predefined calibration targets and manual user intervention. The device monitors its own performance degradation and corrects it autonomously.
Solution Approach 2:
The device continuously performs background measurements and drift compensation calculations in advance to maintain measurement accuracy before actual spectral measurements are taken, preventing accuracy degradation rather than correcting it after the fact.
2Reliability
If frequent calibration is performed to correct drifting effects, then measurement reliability is improved, but loss of time and productivity decrease
Solution Approach 1:
The device performs continuous background measurements and drift compensation operations alongside normal spectral measurements, eliminating the need to stop operation for separate calibration procedures. The calibration process becomes an ongoing background activity rather than a discrete time-consuming event.
Solution Approach 2:
Drift compensation data is continuously accumulated and processed in advance, allowing the device to maintain measurement reliability without requiring frequent interruptions for manual calibration, thus reducing time loss while preserving reliability.
3Extent of automation
If modulated optical radiation is used for self-calibration, then automation extent increases, but device complexity increases
Solution Approach 1:
The spectral sensing device uses its existing measurement capabilities to perform both normal spectral measurements and self-calibration functions, eliminating the need for separate dedicated calibration hardware. The same detector and optical path serve multiple purposes.
Solution Approach 2:
The device employs periodic modulation of the optical radiation source to distinguish between background signals and actual measurement signals, enabling automatic differentiation and compensation of drift effects through frequency-based signal separation.
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
Enhances measurement accuracy and reliability by reducing noise and allowing for self-calibration without user intervention, suitable for everyday use in consumer electronics.
Implementation Method 1
at least one photosensitive detector (124), wherein the at least one photosensitive detector has at least one photosensitive region (126) designated for receiving optical radiation (112), wherein at least one detector signal generated by the at least one photosensitive detector (124) is dependent on an illumination of the at least one photosensitive region (126)
Implementation Method 2
at least one radiation emitting element (118), wherein the at least one radiation emitting element is designated for emitting modulated optical radiation (120)
Data Source
AI summary
Disclosed herein are a spectral sensing device and a method for measuring optical radiation. The optical radiation is provided by at least one measurement object and includes non-modulated optical radiation. The spectral sensing device includesat least one radiation emitting element;at least one photosensitive detector; andat least one evaluation unit.The spectral sensing device is arranged in a manner such that modulated optical radiation is guided within the spectral sensing device towards at least one photosensitive detector.The spectral sensing device and a method for measuring optical radiation are configured to perform, preferably in a fully automatized fashion, a self-calibration of the spectral sensing device without requiring any predefined reflection target.