Auricle PPG Earring Monitoring for Long-Term Accuracy
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Solution Overview
Problem
Current wearable apparatus face challenges in continuous monitoring of physiological parameters with accuracy issues over prolonged use.
Innovation Solution
A wearable apparatus comprising an earring body with a sensor module that obtains biological signals, including a multi-wavelength PPG sensor and pressure adjustment component, processes these signals using a physiological system model or deep machine learning model to accurately monitor tonoarteriogram (TAG) and other parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If wearable apparatus is used for continuous monitoring, then monitoring duration is extended, but monitoring accuracy deteriorates
Solution Approach 1:
The monitoring system is divided into multiple sensing components (optical sensor, pressure sensor, temperature sensor) that independently measure different physiological parameters. Each sensor module can be optimized for its specific function, allowing continuous monitoring without compromising accuracy through signal fusion from multiple sources
Solution Approach 2:
The system dynamically adjusts monitoring parameters by selecting appropriate sensors and sampling rates based on real-time physiological conditions. The pressure adjustment component modifies applied pressure to optimize signal quality, while the system adapts its processing algorithms to maintain accuracy across varying monitoring durations
2Measurement precision
If pressure adjustment component is added to obtain oscillation signal, then monitoring accuracy is improved, but device complexity increases
Solution Approach 1:
The pressure adjustment component is integrated with the optical sensor system into a unified monitoring unit. The airbag, valve, and control circuitry are combined with the optical sensing elements to form a cohesive module that obtains both PPG and oscillation signals through a single integrated structure, reducing overall system complexity
Solution Approach 2:
The pressure adjustment component serves multiple functions: it applies controlled pressure to the auricle to obtain oscillation signals, compensates for motion artifacts, and optimizes contact between the optical sensor and skin. This multi-functionality reduces the need for separate dedicated components for each function
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
Ensures high monitoring accuracy and convenience for long-term use by leveraging the rich vascular distribution and fixed position of the ear, reducing skin damage and enhancing signal variety, while integrating multimodal biological signals for improved precision.
Implementation Method 1
the sensor module comprises an optical sensor for obtaining a photoplethysmogram (PPG) signal
Implementation Method 2
the optical sensor is a multi-wavelength PPG sensor
Implementation Method 3
the pressure adjustment component being adapted to adjust a pressure applied to the auricle to obtain the oscillation signal corresponding to the pressure
Data Source
AI summary
The present invention relates to a wearable apparatus for continuous monitoring of physiological parameters. The invention relates to the field of physiological parameters monitoring technology. The wearable apparatus for the continuous monitoring of physiological parameters comprises an earring body and a monitoring device; wherein the monitoring device comprises a sensor module, the sensor module being arranged at the earring body for obtaining a biological signal at an auricle; the biological signal is to be inputted to a pre-built physiological system model or a deep machine learning model to obtain a physiological parameter; the physiological parameter comprising tonoarteriogram (TAG) signals. The invention realizes the convenience of wearing by a user without affecting normal activities of the user, further allows performing of a long-term monitoring of the user and improving monitoring accuracy while reducing damages to the skin of the ear.