ECG Waveform Display Using IMU and Signal-Based Hand Identification
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Solution Overview
Problem
Existing wearable devices struggle to accurately determine whether the device is worn on the left or right hand, leading to incorrect ECG waveform display and potential misjudgment, especially when the user's heart is positioned rightward.
Innovation Solution
A method combining IMU wearing part identification and ECG waveform analysis to determine the correct hand, using confidence levels and iteration formulas to improve accuracy and reduce false positives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If IMU wearing part identification is used to determine hand position, then the device can identify wearing position, but the accuracy is insufficient especially when user's heart is positioned rightward causing misjudgment
Solution Approach 1:
The patent combines IMU wearing part identification results with ECG waveform analysis results to determine the correct hand position. By merging these two detection methods, the system overcomes the limitations of using either method alone, particularly avoiding misjudgment in cases of rightward heart positioning.
Solution Approach 2:
The system uses ECG waveform characteristics as feedback to verify and correct the hand position determination made by IMU identification. The ECG waveform analysis provides a verification mechanism that can detect and correct errors from IMU-based identification.
2Measurement precision
If ECG waveform comparison with preset reference waveform is used to determine hand position, then hand position can be identified, but false positives occur when user's heart is positioned rightward
Solution Approach 1:
The patent introduces an intermediary verification mechanism that compares results from both IMU identification and ECG waveform analysis before making the final hand position determination. This intermediary step prevents false positives by requiring consistency between multiple detection methods.
3Device complexity
If only IMU wearing part identification is used, then the device structure remains simple, but the false positive rate of ECG waveform display is high
Solution Approach 1:
The patent merges IMU wearing part identification with ECG waveform analysis to create a more reliable determination system. This combination increases detection accuracy and reduces false positives in ECG waveform display, while maintaining reasonable system complexity through efficient integration of the two methods.
Data Source
AI summary
An ECG waveform display method is provided. The method includes: An electronic device starts an ECG waveform detection application, to collect an ECG waveform; the electronic device reads wearing part data between the electronic device and a wrist of a user, where the wearing part data is obtained through IMU wearing part identification; the electronic device determines first wearing part information based on wearing status data, and the determined state is a first determined state or a second determined state; the electronic device obtains second wearing part information between the electronic device and the wrist of the user through ECG wearing part identification; and when the first wearing part information and the second wearing part information are the same and indicate a determined state, the electronic device displays the ECG waveform on a display in a display manner corresponding to the determined state.