Earphone Enhancer with Optical Sensor Aperture for Physiological Monitoring
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Solution Overview
Problem
Existing ear-based physiologic monitors are cumbersome and uncomfortable, making them unsuitable for consistent and accurate physiological data collection during exercise, as they require users to remain stationary or use cumbersome chest straps.
Innovation Solution
Integration of physiologic sensors into earphones or earbuds with enhanced designs, such as apertures or windows in the earpiece for optical coupling with the user's ear, and sweat management systems to maintain accurate data collection during movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If physiologic sensors are integrated into earphones with enhancers, then measurement precision of physiological data is improved, but device complexity increases due to additional components like apertures, windows, and sweat management systems
Solution Approach 1:
The patent combines physiologic sensing functionality with the earphone enhancer component, integrating sensors, apertures, and sweat management features into a single unified device that serves both audio delivery and physiological monitoring purposes
Solution Approach 2:
The enhancer is designed to perform multiple functions simultaneously: acoustic delivery of audio signals, optical sensing of physiological parameters through apertures/windows, and sweat management through wicking materials, making the device versatile for both entertainment and health monitoring
2Measurement precision
If traditional chest straps are used for heart rate monitoring, then measurement precision is adequate, but ease of operation deteriorates due to cumbersomeness and discomfort
Solution Approach 1:
The patent replaces the mechanical chest strap system with an ear-based optical sensing system that uses light transmission through ear tissue to measure physiological parameters, eliminating the need for tight mechanical compression around the chest
Solution Approach 2:
The invention changes the measurement location from the chest to the ear, utilizing the ear's thinner tissue and vascular structure to achieve accurate optical sensing of heart rate and oxygen saturation with greater user comfort and freedom of movement
3Measurement precision
If ear-based sensors are positioned for optimal optical coupling, then measurement precision improves, but reliability deteriorates due to sensor displacement during exercise
Solution Approach 1:
The enhancer is pre-designed with integrated apertures and windows positioned to achieve optimal optical coupling with ear tissue before exercise begins, ensuring proper sensor alignment is established in advance and maintained throughout physical activity
Solution Approach 2:
The enhancer incorporates flexible materials and thin film structures that can accommodate natural ear movement and deformation during exercise while maintaining continuous optical contact between the sensors and ear tissue, ensuring reliable data collection
4Measurement precision
If earphones are designed with apertures and windows for sensor optical coupling, then measurement precision is improved, but object-generated harmful factors worsen due to sweat interference with sensor readings
Solution Approach 1:
The patent converts the harmful effect of sweat by incorporating hydrophilic wicking materials that actively draw sweat away from the optical sensing areas through capillary action, using the sweat's own movement to prevent interference with sensor readings
Solution Approach 2:
The patent introduces hydrophilic wicking materials as intermediary elements between the sweat and optical sensors, which act as a mediator to transport sweat away from the sensing apertures and windows, preventing direct contact between moisture and the optical components
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
Enables continuous, accurate monitoring of physiological properties like heart rate and oxygen saturation without the discomfort of chest straps, allowing users to exercise freely while collecting reliable data.
Implementation Method 1
The enhancer can have at least one aperture or window therein, so that the sensor can optically couple to the ear of the wearer to provide physiologic data
Implementation Method 2
The physiologic sensor can sense physiologic properties through optical transmission through a part of the ear between the transmitter and the receiver
Data Source
AI summary
An earphone with a physiologic sensor includes a housing; a speaker in the housing; an enhancer comprising a body mounted on the housing and adapted to be secured in the ear to acoustically couple the speaker to the user's ear; and an optical physiologic sensor disposed inside the enhancer, the enhancer having an aperture or window aligned with the optical physiologic sensor, so that the sensor can optically couple with the user's ear when the enhancer is secured in the user's ear.