Infrared Sleep Vital Sign Monitoring via Motion Magnification
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Solution Overview
Problem
Existing vital sign monitoring technologies face challenges in achieving accurate and comfortable monitoring during sleep due to the limitations of contact-based methods, which can cause discomfort and signal loss, and non-contact methods like video-based monitoring lack comprehensiveness and adaptability to sleep scenarios.
Innovation Solution
A non-invasive vital sign monitoring method using real-time infrared video imaging, sleep state monitoring, motion magnification processing, and target region extraction to enhance and extract respiratory and heart rate motions, enabling accurate detection of vital signs without direct contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If contact-based monitoring methods (wearable devices or embedded sensors) are used, then monitoring accuracy can be improved, but comfort and natural sleep state are compromised
Solution Approach 1:
The patent replaces mechanical contact-based monitoring systems (wearable devices and embedded sensors) with an optical non-contact system using infrared video imaging. The system captures thermal and motion information through infrared cameras without physical contact, thereby maintaining measurement accuracy while eliminating discomfort and interference with natural sleep patterns.
Solution Approach 2:
The patent introduces an intermediary processing system that includes motion magnification algorithms and region of interest extraction. These intermediaries enhance subtle body movements captured in infrared videos to extract vital signs accurately without requiring direct contact between sensors and the subject's body.
2Measurement precision
If contact-based monitoring methods are used, then monitoring accuracy can be improved, but reliability is reduced due to signal loss during posture changes
Solution Approach 1:
The patent substitutes mechanical contact sensors with optical infrared imaging that can detect body movements and thermal patterns from a distance. This non-contact approach eliminates signal loss issues that occur when subjects change positions or turn over, as the infrared camera continuously captures thermal and motion information without being affected by physical contact changes.
Solution Approach 2:
The patent employs dynamic motion magnification processing that adapts to changing body positions and postures in real-time. The system enhances subtle movements while filtering out noise, maintaining reliable vital sign extraction regardless of whether the subject is lying still or changing positions during sleep.
3Ease of operation
If video-based monitoring is used, then non-invasive monitoring is achieved, but comprehensiveness and adaptability to sleep scenarios are insufficient
Solution Approach 1:
The patent creates a multi-functional infrared video monitoring system that can simultaneously detect multiple vital signs including respiratory rate, heart rate, and sleep stages. By processing thermal images and motion data through specialized algorithms, the system provides comprehensive monitoring coverage for various sleep scenarios and conditions without requiring separate devices for each measurement.
Solution Approach 2:
The patent transitions from conventional 2D visible light video to 3D infrared thermal imaging, adding a thermal dimension that enables detection of subtle body heat patterns and movements. This dimensional enhancement allows the system to extract more comprehensive vital sign information and adapt to different sleep positions and environmental 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
The method ensures accurate and non-invasive monitoring of vital signs by enhancing subtle body motions, reducing interference from environmental factors, and providing reliable respiratory and heart rate information in sleep scenarios.
Implementation Method 1
acquiring a real-time infrared video image in a sleep monitoring scenario
Implementation Method 2
performing motion magnification processing on the first target image according to preset vital sign information to obtain a second target image
Data Source
AI summary
Provided is a non-invasive vital sign monitoring method, electronic device, and storage medium. The method comprises: acquiring real-time infrared video images in a sleep monitoring environment; performing sleep state monitoring on a subject in the real-time infrared video image to obtain a first target image indicating that the subject has entered a sleep state; performing motion magnification on the first target image according to preset vital sign information to obtain a second target image; performing target region extraction on the second target image to obtain a region associated with the preset vital sign information; and extracting vital signs from the target region to obtain the subject's vital sign information. The invention achieves accurate, non-invasive monitoring of vital signs during sleep.