Wireless ECG Measurement Synchronization
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Solution Overview
Problem
Conventional electrocardiogram (ECG) measurement devices using physical wires introduce noise and inconvenience due to user movement, limiting their usability for continuous monitoring of heart signals in daily life.
Innovation Solution
A wireless communication-based apparatus and method for ECG signal measurement, where a submodule measures a first signal via a first electrode upon receiving a flag signal, and a main module synchronizes the measurement time of a second signal via a second electrode, considering wireless transmission time, to generate ECG signals without restricting wearer movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical wires are used to connect electrodes to measurement module, then measurement reliability is improved, but user movement freedom deteriorates and noise is introduced
Solution Approach 1:
The patent replaces the mechanical wire connection system with a wireless communication system. The measurement module and electrodes communicate via wireless signals, eliminating physical wires that restrict movement and introduce noise. This substitution maintains measurement reliability while significantly improving user movement freedom.
Solution Approach 2:
The patent introduces wireless communication as an intermediary between electrodes and measurement module. Instead of direct physical connection, data is transmitted through wireless signals, which acts as a mediator to convey electrical signals without the constraints of physical wiring, thus resolving the contradiction between reliability and movement freedom.
2Ease of operation
If wireless communication is used to transmit signals, then user movement freedom is improved, but measurement precision deteriorates due to signal transmission delays
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing wireless transmission time characteristics before actual measurement. The system measures and stores the time required for wireless signal transmission in advance, then uses this stored data to compensate for transmission delays during actual ECG measurement, ensuring precise timing without restricting movement.
Solution Approach 2:
The patent implements feedback mechanisms where the measurement module continuously monitors wireless transmission timing and adjusts measurement synchronization accordingly. The system uses feedback from transmission time measurements to dynamically synchronize measurement timing, maintaining precision while enabling wireless operation.
3Measurement precision
If measurement time is synchronized between main module and submodule, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent uses preliminary action by pre-measuring and storing wireless transmission time characteristics before synchronization is needed. This advance preparation allows the main module and submodule to synchronize their measurement timing using pre-computed time values, achieving precise synchronization without requiring complex real-time coordination algorithms.
Data Source
AI summary
An apparatus for measurement of an electrocardiogram signal using wireless communications includes a submodule measuring a first signal by a heartbeat signal provided via a first electrode when a flag signal is wirelessly received, and a main module wirelessly transmitting the flag signal according to a predetermined sampling period, and measuring a second signal by a heartbeat signal provided through a second electrode. The main module is configured to synchronize a measurement time of the second signal with a measurement time of the first signal by measuring the second signal in consideration of a wireless transmission time of the flag signal.