Wake from OFF State Power Adapter with Automatic Detection
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Solution Overview
Problem
Existing power adapter systems fail to efficiently wake from an OFF state without consuming standby energy, relying on manual buttons or internal batteries that increase energy waste and reduce device lifespan.
Innovation Solution
A wake-from-OFF-state system that uses a controller device and power switching mechanism to automatically enable power flow when an external device is attached, eliminating standby energy consumption and extending device lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If power adapter enters OFF state to eliminate standby power consumption, then energy efficiency is improved, but device cannot automatically wake without manual intervention or additional components
Solution Approach 1:
The system performs preliminary action by detecting device attachment before full power activation. The controller monitors for the presence of an external device and automatically initiates the power-on sequence upon detection, eliminating the need for manual buttons while maintaining true OFF state with zero power consumption.
Solution Approach 2:
The power adapter serves itself by automatically detecting when a device is attached and autonomously transitioning from OFF to ON state. This self-service mechanism eliminates standby power consumption while providing automatic wake capability through built-in detection circuits that trigger power restoration without external intervention.
2Extent of automation
If manual button or switch is added to wake from OFF state, then automatic wake is enabled, but device complexity increases and buttons are often forgotten or left in on position
Solution Approach 1:
The mechanical button or switch system is replaced with an electronic detection mechanism. The controller uses electrical signals to detect device attachment and automatically control the power switching device, substituting mechanical user interaction with electronic sensing and automated control logic.
Solution Approach 2:
The controller acts as an intermediary between device attachment and power activation. It receives detection signals from the connection interface, processes the information, and controls the power switching device accordingly, serving as a mediator that enables automatic wake without mechanical buttons.
3Extent of automation
If internal battery is used to operate standby logic, then wake from OFF state is enabled, but energy storage device is required and standby power consumption increases
Solution Approach 1:
The internal battery component is extracted and removed from the system. Instead of using energy storage devices to power standby logic, the invention achieves automatic wake functionality through detection circuits that operate only when power is available, eliminating the need for separate battery power sources.
Solution Approach 2:
The system uses periodic detection cycles to monitor for device attachment. The controller periodically checks for connected devices and automatically activates power when detection occurs, replacing continuous standby operation with periodic sensing that consumes minimal energy during OFF state.
4Ease of operation
If power adapter remains in standby mode to enable automatic wake, then wake capability is maintained, but heat, electromagnetic emissions, and vibration occur
Solution Approach 1:
The system performs preliminary detection of device attachment before activating power-consuming components. By detecting the external device first and then triggering power activation, the system avoids continuous operation of power-intensive components, reducing heat and electromagnetic emissions during idle periods.
Solution Approach 2:
The power adapter automatically transitions from low-power detection mode to full-power operation only when needed. This self-regulating behavior ensures that components generating heat and electromagnetic emissions remain inactive during OFF state, activating only when device attachment triggers the power-on sequence.
Data Source
AI summary
A wake from OFF state system is described that enhances power adapters and battery chargers that have been shut completely off in efforts to conserve energy. Wake from OFF state devices may be used to automate the otherwise tedious process of turning on a power switch. A wake from OFF state device is distinguished from a wake from sleep state device which continues to consume some amount of power to operate in a standby mode. A wake from OFF state power adapter can be turned fully off and left off indefinitely. There are no active standby circuits, no power consumption, no active logic, no emissions, no heat, when the device is in this OFF state. Wake from OFF state is useful for a variety of devices including (but not limited to) smartphones, portable computers, power tools, electric vehicles, and rechargeable batteries.