Physiological Parameter Calculation with Sensor Failure Algorithm Switching
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Solution Overview
Problem
Conventional physiological parameter calculation devices, such as pulse oximeters and electrocardiogram examination devices, fail to calculate physiological parameters when there is a failure in their emitters or electrodes, leading to incomplete data acquisition.
Innovation Solution
A physiological parameter calculation device equipped with a failure sensing mechanism that switches between primary and secondary algorithms based on the status of its sensors, allowing continuous calculation of parameters even when individual sensors fail.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional pulse oximeter uses a single set of light emitters, then the device structure is simple, but the device cannot calculate arterial oxygen saturation when a failure occurs in any emitter
Solution Approach 1:
The patent combines multiple light emitters (first and second light emitters) into a single probe, allowing the system to switch between different emitter combinations based on failure detection. This merging approach enables continuous measurement capability while maintaining a relatively integrated structure.
Solution Approach 2:
The patent performs preliminary failure detection of light emitters before actual measurement. By detecting emitter status in advance and switching to backup emitters when failures are detected, the system ensures continuous measurement capability without waiting for measurement interruption.
2Reliability
If an electrocardiogram examination device uses a standard 12-lead configuration with multiple electrodes, then comprehensive electrocardiogram information can be acquired, but the device cannot acquire electrocardiogram information when a failure occurs in any electrodes
Solution Approach 1:
The patent combines multiple electrode configurations (first and second electrode arrangements) into a single examination device, enabling the system to switch between different configurations when failures occur. This allows comprehensive electrocardiogram information acquisition while maintaining measurement capability under failure conditions.
Solution Approach 2:
The patent performs preliminary failure detection of electrodes before electrocardiogram measurement. By detecting electrode status in advance and switching to alternative configurations when failures are detected, the system ensures continuous electrocardiogram information acquisition capability.
3Reliability
If a physiological parameter calculation device lacks failure detection capability, then the device structure is simpler, but the device cannot continue calculation when sensor failures occur
Solution Approach 1:
The patent implements a feedback mechanism where the failure sensing section continuously monitors sensor status and provides feedback to the calculation section. This feedback loop enables the system to detect failures and switch to alternative calculation algorithms automatically, ensuring continuous physiological parameter calculation.
Solution Approach 2:
The patent makes the calculation algorithm dynamic by allowing automatic switching between first and second calculation algorithms based on real-time sensor status. This dynamic adaptation enables the system to maintain calculation capability under varying failure conditions.
Data Source
AI summary
A physiological parameter calculation device includes an acquiring section, a failure sensing section and a calculation section. The acquiring section acquires a plurality of signals corresponding to physiological information of a subject. The failure sensing section senses a failure of the plurality of elements. The calculation section calculates a physiological parameter based on the plurality of signals acquired by the acquiring section and a first algorithm or a second algorithm. The calculation section calculates the physiological parameter: based on the first algorithm when the failure sensing section does not sense a failure in an element for acquiring a signal used for the first algorithm among the plurality of elements, and based on the second algorithm when the failure sensing senses that a failure occurs in an element for acquiring a signal used for the first algorithm among the plurality of elements.