Optical Sensor Measurement Region Selection for Biological Data
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Solution Overview
Problem
Existing optical sensor systems face challenges in implementing constant measurement of biological data due to power consumption, communication speed, and motion-induced deviations, particularly when the number of light receiving elements is large or small, making it difficult to accurately identify measurement positions and maintain consistent data collection.
Innovation Solution
A measurement device that includes a light receiving element array with a measurement instruction output unit, a reception signal acquisition unit, a biological data generation unit, and a calculation unit to perform preliminary and main measurements, calculating deviations in biological data to set an optimal measurement region for continuous data acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of light receiving elements is increased to improve measurement precision, then measurement reliability improves, but power consumption and communication load increase
Solution Approach 1:
The patent divides the measurement process into two stages: a first measurement stage using all light receiving elements to identify promising regions, and a second measurement stage using only selected elements. This segmentation allows the system to achieve high measurement precision through comprehensive initial scanning while reducing power consumption during continuous measurement by activating only the necessary subset of elements.
Solution Approach 2:
The patent applies partial action by using all light receiving elements for the initial first measurement to ensure comprehensive coverage and identify the best measurement regions, then switching to partial action in the second measurement stage by selecting only the top-performing elements. This approach ensures measurement precision is not compromised while significantly reducing ongoing power consumption.
2Measurement precision
If the number of light receiving elements is increased to improve measurement precision, then measurement reliability improves, but communication speed and data processing load increase
Solution Approach 1:
The patent segments the measurement process into two phases: initial comprehensive measurement with all elements to establish baseline performance, followed by selective measurement with only the best elements. This segmentation reduces the volume of data that needs to be communicated and processed during continuous measurement, thereby improving communication speed while maintaining measurement precision.
Solution Approach 2:
The patent uses excessive action during the first measurement stage by activating all light receiving elements to ensure no potential measurement region is overlooked, then transitions to partial action by selecting only the top-performing elements for continuous measurement. This reduces communication bandwidth requirements and processing load while preserving measurement precision.
3Use of energy by moving object
If the number of light receiving elements is decreased to reduce power consumption, then power consumption decreases, but measurement precision and reliability deteriorate
Solution Approach 1:
The patent performs preliminary action during the first measurement stage by using all light receiving elements to scan and evaluate the entire measurement region. This preliminary comprehensive measurement identifies the top-performing elements, allowing the system to then use only these selected elements for continuous measurement, thereby reducing power consumption while maintaining measurement precision through data-driven selection.
Solution Approach 2:
The patent implements feedback by evaluating the performance of each light receiving element during the first measurement stage and using this feedback to select the top-performing elements for the second measurement stage. This feedback mechanism ensures that the reduced set of active elements maintains high measurement precision by continuously selecting the most effective elements based on their actual performance data.
4Area of stationary object
If the measurement region is expanded to cover more areas, then measurement coverage improves, but the ability to identify specific measurement positions decreases
Solution Approach 1:
The patent segments the measurement process into two stages: first, a comprehensive scan of the entire measurement region using all light receiving elements to identify promising areas, and second, focused measurement in the top-performing regions. This segmentation allows the system to achieve wide measurement coverage during the initial stage while maintaining the ability to identify specific high-quality measurement positions through performance-based selection.
Solution Approach 2:
The patent applies local quality by evaluating each light receiving element's performance individually during the first measurement stage and then focusing subsequent measurements on the local regions with the highest performance. This ensures that while the system initially scans the entire area for comprehensive coverage, it then concentrates resources on the specific local regions that demonstrate the best measurement characteristics, thereby maintaining position identification accuracy.
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 constant and reliable measurement of biological data by reducing the load on the optical sensor and communication systems, improving data accuracy and reducing the impact of motion-induced deviations across varying numbers of light receiving elements.
Implementation Method 1
a light receiving element array in which a plurality of light receiving elements is two-dimensionally arranged... receives reflected light of optical signals emitted from the plurality of light emitters
Data Source
AI summary
Provided is a measurement device that outputs, to an optical sensor including a light receiving element array in which light receiving elements are two-dimensionally arranged, a measurement instruction including a first measurement instruction to instruct first measurement corresponding to preliminary measurement and a second measurement instruction to instruct second measurement corresponding to main measurement, acquires a reception signal of the light receiving elements according to the measurement instruction, generates biological data for the light receiving elements using the acquired reception signal, calculates a deviation of the biological data for the light receiving elements using the biological data generated using the reception signal acquired according to the first measurement instruction, and sets a measurement region including a light receiving element used for second measurement according to the second measurement instruction in accordance with the deviation of the biological data for the light receiving elements.