Biological Sensor Timing Verification for Blood Glucose Accuracy
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Solution Overview
Problem
Conventional biological information measurement devices face accuracy issues due to rare instances where measurements are not executed at preset timings, making it difficult to identify causes such as measurement environment or power supply voltage, leading to variance in calculated blood glucose levels.
Innovation Solution
Incorporating a second timer that confirms the suitability of measurement timing by comparing it to a preset timing, ensuring that measurements are only completed when the discrepancy is within a specific range, prompting users to retake measurements if discrepancies occur, thereby improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single timer is used to execute measurement operations based on preset timing, then the device operation is simple, but measurement accuracy deteriorates when timing discrepancies occur
Solution Approach 1:
The timer function is segmented into two independent timers: a first timer that generates preset measurement timing and a second timer that executes measurement operations. This segmentation allows independent verification of timing accuracy without requiring a completely different timing mechanism, resolving the contradiction between measurement precision and device complexity
Solution Approach 2:
The controller compares the timing from the first timer with the actual execution timing from the second timer, and when a discrepancy exceeds a threshold, prompts the user to retake the measurement. This feedback mechanism ensures measurement accuracy by detecting timing errors and triggering corrective action, while maintaining simple device operation through automated comparison and user guidance
2Reliability
If measurement timing is not verified, then the measurement process is efficient, but reliability deteriorates due to undetected timing errors
Solution Approach 1:
The controller performs preliminary comparison of timing values from the first and second timers before finalizing the measurement result. This preliminary verification action detects timing discrepancies early in the process, ensuring measurement reliability without requiring additional measurement time, as the comparison occurs automatically as part of the existing measurement workflow
Data Source
AI summary
It is an object of certain embodiments of the present invention to suppress variance in measurement results from a biological information measurement device and enhance measurement accuracy. A biological information measurement device comprises a main case having a sensor mounting component for mounting a sensor that senses biological information, a measurement component that connects to the sensor mounting component, a controller that connects to the measurement component, a first timer that connects to the controller, and a second timer that connects to the controller. The controller has a measurement mode in which a measurement operation is performed through the measurement component. In the measurement mode, the controller executes the measurement operation based on a preset measurement timing using the first timer, and determines the suitability of the measurement operation based on the preset measurement timing, using the second timer.