Biosensor Voltage Pattern for Abnormal Waveform Detection
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Solution Overview
Problem
Conventional biosensors experience reduced measurement precision due to unstable sample supply, external factors causing sample scattering or flow, and sensor malfunctions, leading to inaccurate results.
Innovation Solution
A biosensor measurement system with a voltage application pattern that includes a halt period between two application periods, comparing oxidation or reduction current measurements from these periods to detect abnormal waveforms and prevent output when differences exceed predetermined ranges, using formulas to calculate P and Q values for precise abnormality detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If voltage is applied continuously to measure current values, then measurement speed is improved, but measurement precision deteriorates due to inability to detect abnormal waveforms
Solution Approach 1:
The patent applies periodic voltage application with alternating measurement periods and halt periods. During measurement periods, voltage is applied to obtain current values; during halt periods, voltage application is suspended. This periodic action enables detection of abnormal waveforms by comparing measurements across cycles while maintaining measurement speed, resolving the contradiction between speed and precision.
2Ease of operation
If sample supply is manual and simple, then ease of operation is improved, but measurement precision deteriorates due to unstable sample supply
Solution Approach 1:
The patent implements feedback by comparing current values obtained in different measurement periods and identifying abnormal waveforms through deviation detection. This feedback mechanism compensates for unstable sample supply conditions, maintaining measurement precision while allowing simple manual sample supply operations.
3Device complexity
If no abnormality detection is implemented, then device complexity is reduced, but reliability deteriorates due to undetected sensor malfunctions
Solution Approach 1:
The patent enables the biosensor system to self-diagnose abnormalities by automatically comparing current values across measurement periods and identifying deviations. This self-service approach detects sensor malfunctions and sample supply issues without adding complex external detection systems, maintaining simplicity while improving reliability.
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 precision by identifying and eliminating abnormal waveforms caused by unstable sample supply, external factors, or sensor malfunctions, ensuring accurate output even in challenging conditions.
Implementation Method 1
measures an oxidation or reduction current value which is caused by a voltage applied between the counter electrode and the working electrode
Implementation Method 2
a sample is introduced into a cavity from a front-end suction port by a capillary phenomenon
Data Source
AI summary
A biosensor measurement system and a method for detecting abnormal measurement in a biosensor, which can significantly enhance the measurement precision without depending on the user's operation manner or the like, can be provided. A voltage application pattern for applying a voltage to a working electrode, a counter electrode, and a detection electrode has a halt period between a first application period and a second application period, and a reduction current measurement value obtained in the first application period is compared with a reduction current measurement value obtained in the second application period, and the measurement values are not outputted when a difference between the measurement values is outside a predetermined range.