Presence-Activated Indicator Illumination for Power Reduction
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Solution Overview
Problem
Electronic devices with illuminable indicators, such as networking equipment, waste power by keeping LEDs illuminated 24/7 even when no user is present to view them, leading to significant energy consumption in environments with multiple devices.
Innovation Solution
Incorporating a presence detector to enable illuminable indicators only when a user is in proximity, using a controller to manage the enablement and disablement of these indicators, and employing a timer to prevent brief disruptions in illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If illuminable indicators are kept illuminated 24/7 to indicate device status, then user information visibility is improved, but power consumption increases significantly
Solution Approach 1:
The indicator system transitions from a static continuous illumination mode to a dynamic conditional illumination mode. The controller dynamically adjusts the illumination state based on real-time detection of user presence, enabling the indicator to be illuminated only when needed (when a user is detected within a threshold distance), thereby reducing unnecessary power consumption while maintaining visibility when required.
2Loss of energy
If illuminable indicators are disabled when no user is present to save power, then energy waste is reduced, but indicator reliability decreases due to potential brief disruptions
Solution Approach 1:
The system incorporates a timer component that anticipates potential user presence and maintains indicator illumination for a predetermined period after user presence is detected. This preliminary action ensures that the indicator remains reliable and available even if the user temporarily moves out of the detection threshold, preventing brief disruptions while still enabling power savings during extended periods of absence.
3Use of energy by stationary object
If presence detection is implemented to control indicator illumination, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The system introduces a presence detector as an intermediary component that mediates between the power saving objective and the indicator illumination requirement. This intermediary device detects user presence and provides signals to the controller, which then manages the indicator illumination state. The presence detector acts as a simple mediator that enables automatic control without requiring complex decision-making logic or user interaction.
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
Reduces unnecessary power consumption by ensuring illuminable indicators are only active when a user is present, maintaining functionality while minimizing energy waste.
Implementation Method 1
a presence detector to enable illuminable indicators only when a user is in proximity
Data Source
AI summary
An electronic device includes an illuminable indicator, a presence detector, and a controller. The illuminable indicator is to indicate information to a user of the electronic device by one or more of being illuminated and not being illuminated. The presence detector is to detect presence of the user in proximity to the electronic device regardless of whether the user is moving or is stationary. Absence of the user is inferred upon the presence detector not detecting the presence of the user. The controller is to enable the illuminable indicator based at least on the presence of the user as detected by the presence detector and to disable the illuminable indictor based at least on the absence of the user. Enablement of the illuminable indicator does not mean that the illuminable indicator is necessarily illuminated. Disablement of the illuminable indicator means that the illuminable indicator is never illuminated while disabled.