Physiological Sensor Controller Verification Logic

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Solution Overview

Problem

Current physiological sensor systems face complexity in verifying the correct combination between a physiological sensor and a patient, leading to potential errors and inefficiencies, particularly in situations where the sensor is temporarily removed or improperly positioned, resulting in abnormal measurement signal receptivity.

Innovation Solution

A physiological sensor controller that acquires a verification image containing identification information of the sensor and the patient's face, detects the sensor's position and direction, and determines the need for a retry based on signal receptivity, providing guided feedback for correct positioning and power management to ensure reliable data collection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If verification of sensor-patient combination is performed using ID information and face verification image, then reliability of physiological information is improved, but operation complexity increases

Engineering Contradiction:

Improveverification accuracyVSAvoidoperation complexity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system performs verification actions in advance by acquiring the face verification image and ID information before physiological measurement begins. This preliminary verification ensures reliability without adding complexity during the actual measurement process, as the verification is completed beforehand and stored for reference.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses a face verification image (a visual copy) and ID information (data copy) to verify patient identity and sensor matching. This copying approach allows verification without requiring the patient to physically present identification documents or undergo complex procedures during measurement.

Inventive Principle:

Principle #26Copying

2Reliability

If retry for verification is performed when measurement signal receptivity is abnormal, then reliability is improved, but operation complexity and time loss increase

Engineering Contradiction:

Improvemeasurement reliabilityVSAvoidverification time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system continuously monitors measurement signal receptivity and provides feedback when abnormalities are detected. Based on this feedback, the system intelligently determines whether retry verification is necessary, avoiding unnecessary retry operations and reducing time loss while maintaining measurement reliability through targeted verification only when needed.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

Instead of performing full verification retry for every abnormality, the system applies partial verification actions only when the abnormality suggests a verification issue rather than a temporary signal disruption. This selective approach reduces time loss by avoiding excessive retry operations for minor or transient abnormalities.

Inventive Principle:

Principle #16Partial or excessive action

3Ease of operation

If sensor is temporarily removed for bathing or repositioning, then patient comfort is improved, but measurement signal receptivity becomes abnormal

Engineering Contradiction:

Improvepatient convenienceVSAvoidsignal receptivity

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system dynamically adjusts its operation based on the operational state. When sensor removal is detected (indicated by abnormal receptivity), the system transitions to a verification-checking mode to determine if retry is needed. This dynamic response allows the system to accommodate temporary sensor removal for patient convenience while maintaining reliability by verifying sensor-patient matching when abnormalities occur.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system prepares for potential sensor removal by having the verification mechanism ready to check whether the abnormality indicates a matching issue. This beforehand preparation allows the system to quickly determine if retry verification is needed without adding complexity to the normal operation flow, cushioning against the reliability impact of temporary sensor removal.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS10445578B2Physiological sensor controller, physiological sensor system and non-transitory computer readable medium

Publication Date: 2019.10.15 FUJIFILM CORP

AI summary

A physiological sensor controller controls a physiological sensor (or ECG sensor), positioned on a patient body, for measuring physiological information (or ECG waveform) of the patient body to output a measurement signal. An acquisition device acquires a verification image containing portions of identification information of the physiological sensor and a face of the patient body. A verifier performs verification of acceptability in a combination of the physiological sensor and the patient body according to the verification image. A receiver receives the measurement signal. A detector detects normality or abnormality of receptivity of the measurement signal. A checker operates assuming that the detector determines the abnormality of the receptivity, and checks whether a retry for the verification in the verifier is required or not. An output device operates assuming that the checker determines requirement of the retry for the verification, and outputs information of encouraging the retry for the verification.