Integrated Sport ECG Sensor Assembly for Skin-Contact Recording
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Solution Overview
Problem
Existing personal monitoring devices using frequency modulated physiological signals face challenges with noise immunity and the ability to simultaneously record voice and physiological signals due to the use of audible carrier frequencies, which are prone to ambient noise contamination.
Innovation Solution
Employing high-frequency carrier frequencies ranging from 6 kHz to 20 kHz for frequency modulated physiological audio signals, allowing silent and noise-immune communication between personal monitoring devices and computing devices, enabling simultaneous recording of voice and physiological signals over a single audio channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If audible carrier frequencies are used for frequency modulated physiological signals, then the signals can be transmitted through audio channels, but the signals are prone to ambient noise contamination
Solution Approach 1:
The patent changes the carrier frequency parameter from audible range to ultrasonic range (above 20 kHz). This parameter change allows the signal to remain compatible with audio transmission channels while avoiding ambient noise contamination, since ultrasonic frequencies are beyond the range of typical environmental sounds and human hearing.
2Adaptability or versatility
If audible carrier frequencies are used, then voice and physiological signals can be transmitted through audio channels, but simultaneous recording is difficult due to noise interference
Solution Approach 1:
By changing the carrier frequency to ultrasonic range, the patent enables simultaneous recording of voice and physiological signals without interference. The ultrasonic carrier signal occupies a frequency band above human voice range, allowing both signals to be transmitted through the same audio channel without overlapping or interfering with each other.
3Reliability
If high-frequency carrier frequencies (6 kHz to 20 kHz) are used, then noise immunity is improved and silent communication is achieved, but the frequency range is reduced
Solution Approach 1:
The patent optimizes the carrier frequency parameter to the 6 kHz to 20 kHz range, which provides a balance between noise immunity and frequency availability. This parameter selection achieves silent communication (above human hearing threshold) while maintaining sufficient frequency range for physiological signal modulation and transmission.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Provides noise-immune, silent communication of physiological data, facilitating efficient cardiac rhythm diagnosis and personal ECG acquisition with reduced ambient noise interference, and enabling simultaneous voice and physiological signal recording.
Implementation Method 1
A converter assembly, integrated with, and electrically connected to the sensor assembly, converts the electrical signals generated by the sensor assembly to a frequency modulated physiological audio signal
Data Source
AI summary
An apparatus includes sporting equipment, a sensor assembly, and a processing device. The sensor assembly includes a first sensor and a second sensor that are integrated into the sporting equipment to contact skin of a user. The sensor assembly produces electrical signals indicative of physiological signals of the user. The processing device generates an electrocardiogram (ECG) based on the electrical signals.