Sleep-Responsive Air Conditioning Temperature Cycling Control
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Solution Overview
Problem
Conventional air conditioning devices fail to precisely control room temperature during alternating REM and Non-REM sleep periods, leading to inadequate physiological and sensory responses, resulting in fatigue, memory loss, and cognitive impairment.
Innovation Solution
An air conditioning device with a control method that classifies and alternates between REM and Non-REM sleep periods by adjusting room temperatures, typically lowering temperatures during REM sleep periods and maintaining or increasing them during Non-REM sleep periods, to optimize sleep conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air conditioning maintains constant temperature during sleep, then energy consumption is reduced and operation is simple, but it fails to respond to physiological changes during REM and Non-REM sleep periods, resulting in poor sleep quality
Solution Approach 1:
The air conditioning system implements periodic temperature adjustments synchronized with the natural REM and Non-REM sleep cycles. The controller alternates between first and second temperature settings at predetermined intervals, matching the periodic nature of sleep stages to provide appropriate thermal environment for each phase
Solution Approach 2:
The system transitions from static constant temperature control to dynamic temperature adjustment. The controller actively changes temperature settings based on detected sleep stage transitions, making the temperature profile adaptive and responsive to physiological changes during sleep
2Reliability
If air conditioning adjusts temperature frequently to match sleep cycles, then sleep quality improves, but energy consumption increases
Solution Approach 1:
The system applies partial temperature adjustments rather than extreme changes. By using moderate temperature differences between REM and Non-REM periods and limiting the frequency of transitions, the system achieves physiological benefits while minimizing energy waste from excessive heating/cooling cycles
3Ease of operation
If air conditioning targets only Non-REM sleep period, then temperature control is simplified, but REM sleep physiological requirements are not met, causing fatigue and cognitive impairment
Solution Approach 1:
The sleep period is segmented into distinct REM and Non-REM phases with different temperature requirements. The controller identifies and responds to each phase separately, applying appropriate temperature settings for each segment rather than using a single uniform control strategy
Solution Approach 2:
The system uses feedback from sleep stage detection (through sensors or user input) to adjust temperature control strategies. The controller monitors sleep phase transitions and modifies temperature settings accordingly, creating a closed-loop control system that adapts to actual physiological needs
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 solution enhances sleep quality by aligning temperature control with human sleep cycles, reducing fatigue, memory loss, and cognitive impairment, and improving overall sleep efficiency.
Implementation Method 1
a first operation temperature heating step of heating the room which is an object of air conditioning at a first operation temperature for a preset duration time; and a second operation heating step of heating the room at a second operation temperature which is higher than the first operation temperature for a preset duration time after the first operation temperature heating step
Data Source
AI summary
An air conditioning device and a control method of the same are provided. The air conditioning device may include a controller configured to control the air conditioning device based on a control signal input at an input device, in accordance with at least one sleep mode to provide heating or cooling to a designated room at a first operation temperature and a second operation temperature that is higher than the first operation temperature, the first and second operation temperatures being alternately applied multiple times. This may provide a user with an air conditioning function which corresponds to the user's sleeping patterns and provide for a more pleasant sleeping environment.