Sleep Awakening System Using REM Stage Detection
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Solution Overview
Problem
Existing alarm clocks wake humans regardless of their sleep stage, which can be detrimental to health if continued over time, as they disrupt either deep NREM or shallow REM sleep, leading to negative effects such as dizziness, bad mood, or lack of energy.
Innovation Solution
A sleep awaking system that includes a sign parameter collecting module, a time determining module, and an REM determining module to identify when the human is in the REM stage, allowing for a pre-awaking period to transition the body into the REM stage if necessary, followed by a gentle awakening using light and sound.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional alarm clocks wake humans forcibly regardless of sleep stage, then the awakening function is simple and reliable, but human health deteriorates due to disruption of deep NREM sleep or shallow REM sleep
Solution Approach 1:
The system performs preliminary detection of sleep stages before the alarm time arrives, and preliminarily guides the body to transition to REM stage through pre-awakening signals (light, sound, temperature adjustments) during the pre-awakening period, so that by the time the alarm triggers, the body is already in or transitioning to REM stage, avoiding forced awakening from deep NREM sleep
Solution Approach 2:
The system continuously monitors physiological parameters (heart rate, body temperature, brain waves, eye movements) to detect current sleep stage in real-time, and adjusts the pre-awakening signals based on the detected stage to guide the body toward REM stage, creating a closed-loop control system that adapts to the body's actual state
2Ease of operation
If the system detects sleep stage and guides body to REM stage before awakening, then awakening quality improves with clear mind and energy, but device complexity increases due to multiple modules and parameters
Solution Approach 1:
The system integrates multiple functions into a single unified device: sleep stage detection, pre-awakening signal generation, real-time monitoring, and dynamic adjustment all occur within one system. The same sensors and actuators serve multiple purposes throughout the night, reducing the need for separate dedicated components for each function
Solution Approach 2:
The system uses the body's own physiological signals (heart rate, temperature, brain waves) as both the input for detection and the basis for control decisions, allowing the system to self-regulate the pre-awakening process without external intervention or complex external control mechanisms
3Measurement precision
If the system monitors physiological parameters continuously to determine REM stage, then detection accuracy improves, but energy consumption increases
Solution Approach 1:
The system performs sleep stage detection at periodic intervals rather than truly continuously, checking physiological parameters at scheduled times during the pre-awakening period. The detection frequency is adjusted based on the proximity to alarm time and the current sleep stage, reducing unnecessary monitoring when the body is stable in a particular stage
Solution Approach 2:
The system begins intensive monitoring and pre-awakening guidance only after determining that the alarm time is approaching and that the body is in a suitable window for transition to REM stage, rather than maintaining high-level monitoring throughout the entire night, thus concentrating energy expenditure on the critical pre-awakening window
Data Source
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AI summary
Provided are a sleep awaking system and a sleep awaking method. The system comprises: a sign parameter collecting module for collecting a sign parameter of a human body; a time determining module for determining whether the present time is a REM determining time; a REM determining module for obtaining the sign parameter and determining whether the human body is in a REM stage according to the sign parameter in a REM determining period when the time determining module determines that the present time is the REM determining time; an awaking module for awaking the human body after a pre-awaking period when the REM determining module determines that the human body is in the REM stage and causing the human body to enter the REM stage within the pre-awaking period and awaking the human body after the pre-awaking period when the REM determining module determines that the human body is not in the REM stage, wherein the REM determining period and the pre-awaking period pass in turn from the REM determining time to the awaking time. The above system and method realize awaking the human body in the REM stage, making the human body feel a clear mind, act agilely, and full of spirit and energy after being awaked, which is good for health of the human body.