RF-Sensing Fabric Module for Non-Fixed Physiological Detection
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Solution Overview
Problem
Existing physiological detection technologies, such as electrocardiography and wearable devices, require fixed positioning on the body, limiting flexibility and convenience for users.
Innovation Solution
A fabric module utilizing a radio frequency signal to detect physiological conditions through a weaving body with a conductor group and signal processing unit, allowing flexible positioning and deformation-based detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electrode patches are attached to specific positions on the body for electrocardiogram detection, then detection accuracy is improved, but ease of operation deteriorates due to the inconvenience of fixed positioning
Solution Approach 1:
The fabric module integrates multiple conductor groups with different functions (excitation signal generation, feedback signal reception, body impedance measurement) into a single wearable garment. This multi-functional design allows the same fabric module to perform various physiological detections without requiring multiple separate devices or complex positioning, thereby improving ease of operation while maintaining detection accuracy through the specialized conductor groups.
2Measurement precision
If wearable devices are worn on specific parts of the body for physiological signal measurement, then measurement precision is improved, but adaptability deteriorates due to the lack of flexibility in positioning
Solution Approach 1:
The fabric module divides the detection function into multiple independent conductor groups (first conductor group for excitation, second conductor group for feedback, third conductor group for body impedance). Each conductor group can independently perform its detection function, allowing the system to adapt to different body positions and measurement requirements while maintaining measurement precision through the specialized function of each segmented conductor group.
Solution Approach 2:
The fabric module is designed to be flexible and adaptable to different body positions and movements. The conductors are integrated into the fabric structure, allowing them to dynamically adjust to body contours and movements while maintaining electrical contact. This dynamic adaptability enables the device to be worn in various positions without compromising measurement precision.
3Adaptability or versatility
If conductor groups are integrated into the fabric module for physiological detection, then adaptability is improved by allowing non-fixed position detection, but device complexity increases due to the integration of multiple conductors and signal processing units
Solution Approach 1:
The fabric module merges multiple functional components (conductor groups, signal processing unit, impedance adapter, modulation-demodulation unit) into a single integrated wearable device. This consolidation reduces the number of separate components the user must manage, simplifying the overall system while maintaining adaptability through the integrated multi-functional design.
Solution Approach 2:
The fabric module incorporates an impedance adapter that automatically adapts to different body impedances and a modulation-demodulation unit that processes signals autonomously. These self-adjusting features reduce the need for manual calibration and complex user intervention, thereby reducing operational complexity while maintaining adaptability to different users and conditions.
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 flexible and non-fixed position detection of physiological conditions by analyzing deformation patterns and frequencies, providing continuous monitoring without the need for fixed attachment.
Implementation Method 1
a signal processing unit, connected to one terminal of the at least two conductors, configured for emitting a radio frequency signal to the conductor group, and receiving a feedback signal generated by the conductor group based on the radio frequency signal
Data Source
AI summary
A fabric module including a weaving body, a conductor group, a signal processing unit, and a sensing unit is disclosed. The weaving body is directly or indirectly contacted with a user. The conductor group includes at least two conductors spaced apart from each other and is attached to the weaving body. The signal processing unit emits a radio frequency signal to the conductor group and receives a feedback signal generated by the conductor group based on the radio frequency signal. The signal processing unit correspondingly generates a time domain periodically signal wave diagram and a frequency domain periodically signal wave diagram based on the feedback signal and detects the physiological condition of the user based on at least one of the time domain signal wave diagram and frequency domain periodically signal wave diagram.