Automatic Analyzer Photo Detector Calibration
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Solution Overview
Problem
Automatic analyzers face a heavy load during position adjustments of photo detectors due to wavelength accuracy deviations, which occur during assembly or operation, requiring cumbersome adjustments.
Innovation Solution
The analyzer employs a storage unit to associate photo detector identifiers with wavelength band identifiers, allowing for the selection of specific photo detectors based on measurement items, reducing the need for position adjustments by optimizing the layout and association of photo detectors with wavelength bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If photo detectors are assembled and positioned manually, then wavelength measurement can be performed, but position adjustments become cumbersome and time-consuming due to wavelength accuracy deviations
Solution Approach 1:
The patent replaces mechanical position adjustment of photo detectors with software-based wavelength calibration. Instead of physically moving photo detectors to correct wavelength accuracy deviations, the system uses a calibration process that identifies which photo detectors correspond to which wavelength bands through software association, thereby eliminating cumbersome mechanical adjustments while maintaining measurement precision
Solution Approach 2:
The patent changes the parameter being adjusted from physical position to software association. Rather than adjusting the physical position of photo detectors, the system adjusts the logical association between photo detector identifiers and wavelength band identifiers through calibration data, making the adjustment process non-mechanical and easily reversible
2Manufacturing precision
If photo detectors are positioned with high precision during assembly, then wavelength accuracy is maintained, but assembly complexity and time increase
Solution Approach 1:
The patent substitutes mechanical positioning precision requirements with software-based wavelength calibration. The system does not rely on precise mechanical placement of photo detectors during assembly, but instead uses a calibration process to establish the correct association between photo detectors and wavelength bands, thereby reducing assembly complexity while maintaining wavelength accuracy
Solution Approach 2:
The system performs self-calibration by automatically identifying which photo detectors receive light at specific wavelength bands through a calibration routine. This self-service approach eliminates the need for manual precision positioning during assembly, as the system determines its own configuration through software rather than requiring precise mechanical setup
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 reduces the load on position adjustments of photo detectors, improves absorbance calculation precision, and allows for easier correction of wavelength accuracy deviations without mechanical adjustments, thereby lowering costs and enhancing operational efficiency.
Implementation Method 1
a spectroscope, which disperses light, which is emitted by the light source and is transmitted through a liquid mixture of a sample and a reagent, into different wavelengths
Implementation Method 2
The photo detection unit includes a plurality of photo detectors which receive light from the spectroscope, each of the photo detectors receive light related to a wavelength band corresponding to a location of that photo detector, and generates a signal according to the received light
Data Source
AI summary
According to one embodiment, an automatic analyzer comprises a light source, a spectroscope, a photo detection unit, a storage unit, a selection unit, and a calculation unit. The storage unit stores photo detector identifiers related to photo detectors and wavelength band identifiers in association with each other. The selection unit selects a specific photo detector from photo detectors. The specific photo detector corresponds to a specific photo detector identifier associated with a wavelength band identifier of a wavelength band according to a measurement item of a sample. The calculation unit calculates an absorbance related to the measurement item based on a signal from the selected specific photo detector.