Non-contact Radar Vital Sign Monitoring System
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Solution Overview
Problem
Conventional contact health monitoring devices restrict movement, require trained personnel, and have limited operational capacity due to manpower constraints, leading to potential missed detection opportunities in emergencies.
Innovation Solution
A non-contact vital-sign monitoring system utilizing a radar with a data buffer and status classifier to detect respiratory and heart rates, allowing for continuous, unobstructed monitoring without direct contact, using a radar sensor front-end with an ADC and vital-sign processor to classify subject status and extract vital signs from RF signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contact health monitoring devices are used, then vital signs can be detected, but the movement of the monitored subject is restricted and trained personnel are required
Solution Approach 1:
The patent replaces contact-based mechanical sensing with non-contact radar technology. The radar system uses electromagnetic waves to detect vital signs (respiratory rate, heart rate) without physical contact, thereby eliminating movement restrictions and enabling operation by untrained personnel while maintaining detection reliability
2Reliability
If conventional health monitoring devices are used, then health measures can be taken, but they can only be made at intervals due to limited manpower
Solution Approach 1:
The radar-based monitoring system enables continuous, real-time detection of vital signs without interruption. The system continuously emits radar signals and processes returned echoes to monitor respiratory and heart rates constantly, eliminating detection intervals and ensuring no emergency is missed due to timing constraints
3Productivity
If non-contact radar monitoring is implemented, then continuous monitoring is enabled, but data processing complexity increases
Solution Approach 1:
The patent segments the complex radar signal processing into distinct functional modules: a data buffer for storing raw radar echoes, a status classifier for determining subject state (stationary/moving), and a vital-sign detector for extracting respiratory and heart rates. This modular segmentation simplifies the overall processing complexity while maintaining continuous monitoring capability
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, non-intrusive monitoring of vital signs, improving response time and reducing the risk of missed emergency detections by allowing untrained personnel to operate, thereby enhancing healthcare accessibility and emergency response.
Implementation Method 1
a non-contact vital-sign monitoring system having a radar disposed in vicinity of a monitored subject
Data Source
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AI summary
A non-contact vital-sign monitoring system having a radar disposed in vicinity of a monitored subject includes a data buffer storing output signals of the radar sampled in sequence during a predetermined period; a status classifier determining status of the monitored subject; and a vital-sign detector determining a vital sign of the monitored subject according to the output signals of stationary status.