Air Purifier Touch Panel Light Control for Reduced Power Consumption
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Solution Overview
Problem
The existing air purifiers with touch keys of an electrostatic capacitance type have high power consumption due to constantly lit light sources, which are not optimized for energy efficiency.
Innovation Solution
Incorporating a human body detection unit that turns off or blinks the light sources of specific touch keys when no person is detected, and maintaining the light source of a communication key always on for wireless communication functionality, while increasing light intensity upon operation and assigning distinct functions for short and long presses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If light sources of touch keys are always turned on to ensure visual recognition and ease of operation, then user convenience is improved, but power consumption increases
Solution Approach 1:
The light sources are controlled to turn on and off periodically based on detection of user presence. When a user approaches or touches the operation panel, the light sources turn on to provide visual recognition. When no user is present, the light sources turn off to reduce power consumption. This periodic activation based on user interaction resolves the contradiction between continuous visibility and energy efficiency.
2Use of energy by moving object
If light sources are turned off when no person is detected to reduce power consumption, then energy efficiency is improved, but user convenience deteriorates
Solution Approach 1:
The system uses a touch sensor to detect user presence and provides feedback by turning on the light sources when a user approaches or touches the panel. This feedback mechanism ensures that the light sources are activated exactly when needed for user interaction, maintaining convenience while minimizing unnecessary power consumption during periods of non-use.
Data Source
AI summary
An air purifier performing an air purifying operation by drive of an air blower, and the air purifier includes: a housing in which an inlet and outlets and are opened; an air passage that connects the inlet and the outlets and; the air blower that is disposed in the air passage; a pre-filter that is disposed so as to face the inlet; and an operation panel that has a plurality of touch keys to and a plurality of light sources which correspond to the respective touch keys, in which a human body detection unit that detects presence/absence of a person is provided in the housing, and an LED of a predetermined touch key of a first group is turned off when a person is not detected by the human body detection unit, and is turned on or blinks when a person is detected by the human body detection unit.