Wearable RFID Wearing-State Detection for Adaptive Exercise Forces
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Solution Overview
Problem
There is a growing need for wearable devices that assist individuals with reduced muscular strength or joint problems, such as the elderly or patients, in walking and exercising with less effort, while also providing accurate physical ability measurement and exercise guidance.
Innovation Solution
A wearable device equipped with an RFID reader and tag system to determine its wearing state, combined with a motor driver circuit and motor, allows for generating assistance or resistance forces based on user needs, and includes sensors for motion tracking and communication with electronic devices for personalized exercise programs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RFID reader and tag system are added to detect wearing state, then reliability of wearing detection is improved, but device complexity increases
Solution Approach 1:
The patent replaces mechanical or sensor-based wearing detection systems with an RFID electromagnetic field-based detection system. The RFID reader generates an electromagnetic field that interacts with the RFID tag in the wearing portion, enabling contactless and reliable detection of whether the wearable device is properly worn, thus improving reliability while avoiding complex mechanical sensors.
2Adaptability or versatility
If motor driver circuit and motor are added to provide assistance or resistance forces, then functional versatility is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal force generation system using a motor driver circuit and motor that can provide both assistance forces (to help users with reduced muscular strength) and resistance forces (for exercise rehabilitation). This single motor system serves multiple therapeutic functions, enabling the wearable device to adapt to different user needs without requiring separate mechanical systems for each function.
3Measurement precision
If motion tracking sensors and communication modules are integrated, then measurement precision is improved, but use of energy increases
Solution Approach 1:
The patent implements continuous motion tracking using sensors that operate throughout the exercise or walking activity, providing ongoing measurement of user motion and physical ability. The communication module continuously transmits data to electronic devices for real-time monitoring and personalized exercise program adjustment. This continuous operation ensures high measurement precision throughout the entire activity duration.
Solution Approach 2:
The patent incorporates a feedback system where motion tracking sensors continuously monitor user performance, and communication modules transmit this data to electronic devices that provide real-time feedback for adjusting exercise intensity and providing guidance. This feedback loop enhances measurement precision by enabling dynamic adjustment of measurement parameters based on actual user performance.
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 wearable device effectively assists users in walking and exercising by providing targeted forces and feedback, enhancing physical ability measurement and exercise effectiveness, and ensuring secure wearing state detection.
Implementation Method 1
generating a target magnetic field to receive an identifier for a radio frequency identification (RFID) tag included in a wearing portion of the wearable device using an RFID reader included in the wearable device
Data Source
AI summary
A wearable device may generate a target magnetic field for receiving an identifier of an RFID tag included in a wearing portion of the wearable device by using an RFID reader included in the wearable device, determine whether the identifier is received from the RFID tag by using the RFID reader, and determine a worn state of the wearable device on the basis of whether the identifier is received.