Paper-Based TENG Wearable for Battery-Free Health Monitoring
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Solution Overview
Problem
Conventional health monitoring devices rely on battery power, which requires periodic recharging, is costly, and lacks a self-sustaining energy source, limiting their convenience and longevity, especially in IoT-enabled devices that need continuous data transmission for health and physiological data.
Innovation Solution
A battery-free wearable device powered by a triboelectric nanogenerator (TENG) that converts mechanical energy from human movement into electrical energy using a paper-based TENG with a Polydimethylsiloxane/Polytetrafluoroethylene (PDMS/PTFE) composite on a copper film, enabling continuous operation and data transmission without interruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If battery-powered wearable devices are used, then health monitoring function is provided, but periodic recharging is required and device longevity is limited
Solution Approach 1:
The wearable device incorporates a triboelectric nanogenerator that harvests mechanical energy from the wearer's body movements to generate electrical energy, enabling the device to power itself without external recharging. This self-service mechanism converts the wearer's kinetic energy into electrical energy, eliminating the need for periodic battery recharging and extending device operation duration indefinitely.
Solution Approach 2:
The patent replaces the traditional battery-based mechanical energy storage system with a triboelectric nanogenerator that directly converts mechanical energy from body movements into electrical energy. This substitution eliminates the need for chemical battery systems and their associated recharging requirements, providing continuous power supply through direct mechanical-to-electrical energy conversion.
2Productivity
If conventional health devices are used, then health data collection is enabled, but manual data input is required and device cost is high
Solution Approach 1:
The patent replaces manual data input mechanisms with automated sensors that detect physiological parameters such as body temperature, heart rate, and movement. The triboelectric nanogenerator powers these sensors continuously, enabling automatic data collection and transmission without requiring manual intervention from the user, thereby improving both productivity and ease of operation.
Solution Approach 2:
The wearable device incorporates sensors that continuously monitor physiological parameters and automatically transmit data to a connected system or database. This feedback mechanism eliminates the need for manual data entry by automatically capturing, processing, and transmitting health information, thereby improving data collection efficiency and user convenience.
3Reliability
If battery-based wearable devices are used, then power supply is provided, but battery replacement is required and user cost increases
Solution Approach 1:
The triboelectric nanogenerator enables the device to generate its own electrical energy from the wearer's body movements, eliminating the need for battery replacement. This self-service power generation mechanism ensures continuous reliable operation while removing ongoing maintenance costs associated with battery replacement, thereby improving reliability and reducing user cost.
Solution Approach 2:
The patent implements a continuous energy generation system where the triboelectric nanogenerator constantly converts mechanical energy from body movements into electrical energy. This continuous useful action ensures uninterrupted power supply without the periodic interruptions required for battery recharging or replacement, thereby enhancing reliability and eliminating associated maintenance costs.
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
The TENG device provides a self-sustaining power source for wearable health monitoring devices, reducing the need for recharging, lowering costs, and enabling continuous data transmission, particularly beneficial for remote or resource-constrained areas, and effective for real-time health threat monitoring and management.
Implementation Method 1
The TENG nanogenerator provides a tool to generate electrical energy by coupling a triboelectric effect and electrostatic induction to convert mechanical energy into electricity
Implementation Method 2
The TENG nanogenerator provides a tool to generate electrical energy by coupling a triboelectric effect and electrostatic induction to convert mechanical energy into electricity
Data Source
AI summary
A health monitoring device is provided, and may be used in population health monitoring and disease tracing, as well as for individual subject health purposes. The health monitoring device comprises a triboelectric nanogenerator (TENG) for generating and storing electrical energy from mechanical activity of a user. The device provides a continuous and uninterrupted stream of physiological data received at a surface of the device in contact with a surface of the user. The triboelectric nanogenerator is a paper-based device comprising a paper-based material layer and a polydimethylsiloxane/polytetrafluoroethylene (PDMS/PTFE) material layer, each on a copper film. The device has enhanced sensitivity to motion, providing an improved device capable of converting small amounts of movement into electrical energy, and of recording and transmitting data of small physiological changes of a user to a receiver. The device is lithium free, and eliminates the necessity of recharging.