ECG Transmitter Statistics for Low Power Monitoring

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Solution Overview

Problem

Existing electrocardiographic measurement systems face challenges with high power consumption, leading to increased size and weight of portable devices, which limits long-term continuous monitoring, and complex signal processing that hinders detailed remote diagnosis.

Innovation Solution

An electrocardiographic measurement system that employs an attachable transmitter with an electrocardiographic signal detection circuit and wireless communication circuit, which computes statistics from the detected signals and transmits data only when the statistics are out of a predetermined range, reducing power consumption and simplifying signal processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the portable electrocardiograph continuously transmits electrocardiogram data in real time to the mobile terminal, then the diagnostic capability is improved, but the power consumption increases significantly

Engineering Contradiction:

Improvediagnostic capabilityVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The system performs complete real-time transmission only when necessary (when abnormality is detected), otherwise it performs partial action by transmitting only statistical parameters. This selective approach maintains diagnostic capability while significantly reducing power consumption during normal operation.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The system changes the transmission parameter from continuous raw electrocardiogram data to compressed statistical parameters (average value, minimum value, maximum value) under normal conditions. This parameter transformation reduces data transmission volume and power consumption while preserving essential diagnostic information.

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If the portable detection device performs complex signal processing and arrhythmia detection algorithms in real time, then the detection accuracy is improved, but the power consumption increases

Engineering Contradiction:

Improvedetection accuracyVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The system segments the processing tasks between the portable device and the server. The portable device performs only simple statistical calculations (average, minimum, maximum values), while the server performs complex arrhythmia detection algorithms and diagnostic analysis. This segmentation reduces power consumption at the portable device while maintaining detection accuracy through server-side processing.

Inventive Principle:

Principle #1Segmentation

3Duration of action of moving object

If the battery and portable electrocardiograph are increased in size to support long-term continuous measurement, then the measurement duration is extended, but the handling convenience deteriorates

Engineering Contradiction:

Improvemeasurement durationVSAvoidhandling convenience

Core Design Contradiction:

Duration of action of moving objectVSEase of operation

Solution Approach 1:

Instead of continuous transmission, the system uses periodic action by transmitting data only at specific conditions (when abnormality is detected or at scheduled intervals). This allows the device to operate for extended periods with a smaller battery, as transmission occurs intermittently rather than continuously, maintaining measurement duration without increasing device size.

Inventive Principle:

Principle #19Periodic action

4Loss of information

If the system transmits all electrocardiogram data continuously, then the complete diagnostic information is available, but the data transmission volume and power consumption increase

Engineering Contradiction:

Improvediagnostic information completenessVSAvoiddata transmission energy

Core Design Contradiction:

Loss of informationVSUse of energy by moving object

Solution Approach 1:

The system extracts only the essential statistical parameters (average value, minimum value, maximum value of R-R intervals) from the complete electrocardiogram data for transmission under normal conditions. This extraction approach maintains diagnostic information completeness by capturing key heart rate characteristics while dramatically reducing data transmission volume and associated energy consumption.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS20230346219A1ECG measurement system and ECG transmitter

Publication Date: 2023.11.02 NIPRO CORP

AI summary

An electrocardiographic transmitter executes statistical processes for an electrocardiographic signal to calculate an average value HRav of a heart rate HR in a predetermined period of time. In a case where the average value HRav of the heart rate HR is abnormal, the electrocardiographic transmitter continuously transmits electrocardiogram data based on the electrocardiographic signal to a terminal. The terminal receives and transfers the electrocardiogram data as it is to a host device. The host device stores therein and supplies the transferred electrocardiogram data for a diagnosis by a medical worker. Thus, the state of a subject's heart can be monitored over the long term.