Air conditioner and control method thereof
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Solution Overview
Problem
Smart air conditioners may incorrectly identify user presence due to sensor errors, leading to unnecessary operation and power wastage, and can confuse operation control based on incorrect user location detection.
Innovation Solution
The air conditioner employs a motion detection sensor to determine object activity and presence by considering the number of time sections and activity amount, and adjusts blowing direction based on the nearest object, using a radar sensor for accurate detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a motion detection sensor is used to identify user presence, then the air conditioner can automatically adjust operation, but sensor detection errors cause incorrect identification and unnecessary operation
Solution Approach 1:
The system continuously monitors motion detection sensor output and uses feedback loops to verify detection results. When motion is detected, the system checks for sustained activity patterns and correlates with other sensors (temperature, humidity, CO2) to confirm actual user presence before adjusting operation, thereby resolving false positives while maintaining automation
Solution Approach 2:
The patent introduces multiple intermediary verification mechanisms including activity amount thresholds, time-based filtering, and cross-sensor correlation as mediators between the motion detection sensor and the final user presence determination. These intermediaries filter out false detections while preserving true user presence signals
2Ease of operation
If the air conditioner controls wind direction based on detected user location, then comfort is improved, but detection errors cause confused operation control
Solution Approach 1:
The system implements feedback verification for location-based wind direction control by continuously monitoring detection consistency and adjusting wind direction only when multiple sensors confirm the same user location pattern, preventing confused operation from erroneous single-sensor readings
Solution Approach 2:
Before changing wind direction based on detected user location, the system performs preliminary verification checks including activity amount thresholds and time-based confirmation to ensure the detected location is accurate, thereby avoiding confused operation control
3Ease of operation
If continuous operation is maintained to ensure user comfort, then comfort is preserved, but power is wasted when users are absent
Solution Approach 1:
The patent applies dynamic operation adjustment by continuously adapting air conditioner operation based on verified user presence status. When user presence is confirmed through multiple verification mechanisms, full operation is maintained for comfort; when absence is detected, operation is automatically reduced or stopped to eliminate energy waste
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
This approach enhances the accuracy of user presence detection, prevents unnecessary operation, and optimizes air direction based on correct user location, reducing power wastage and improving operational efficiency.
Implementation Method 1
a radar sensor configured to detect a presence of the object in the space
Data Source
AI summary
An air conditioner may include: a motion detection sensor configured to detect a movement of an object; at least one processor; a memory comprising instructions configured to cause the at least one processor to: determine, based on the motion detection sensor detecting the object, an activity amount of the object via the motion detection sensor, determine, based on the activity amount of the object satisfying a predetermined first condition, whether a number of second predetermined time sections, in a first predetermined time section, in which the object is detected via the motion detection sensor satisfies a predetermined second condition, or whether the activity amount of the object detected via the motion detection sensor in the first predetermined time section satisfies a predetermined third condition, and determine, based on determining that the predetermined second condition or the predetermined third condition is satisfied, that the object exists.