Adaptive Power Saving Device for Standby Current Management
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Solution Overview
Problem
Conventional power extension wires fail to effectively manage standby power consumption due to varying driving currents from different electrical devices, leading to inefficiencies in power saving functions.
Innovation Solution
A power saving device with a controlling and processing module that automatically calculates a threshold current based on sensed current signals, using a current detecting unit and switch unit to switch to an open-circuit state when standby current is below the threshold, preventing power delivery to electrical devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed threshold current is used in conventional power extension wires, then the power saving function can be implemented, but it fails to adapt to varying driving currents from different electrical devices, leading to ineffective standby power management
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed threshold current to a dynamic, adaptive threshold current that automatically adjusts based on the actual driving current of connected electrical devices. The controlling module senses the driving current and dynamically sets the threshold current to match the standby current characteristics of different devices, enabling effective power saving across diverse electrical devices with varying current requirements.
Solution Approach 2:
The patent implements feedback by using a sensing module to continuously monitor the driving current from electrical devices and feed this information back to the controlling module. Based on this feedback, the controlling module automatically adjusts the threshold current setting, creating a closed-loop control system that adapts to different devices and ensures accurate detection of standby states for power interruption.
2Loss of energy
If the power extension wire continuously supplies AC mains to electrical devices, then electrical devices can operate without interruption, but standby power consumption causes electricity waste and shortens service time
Solution Approach 1:
The patent applies self-service by enabling the power extension wire to automatically detect when electrical devices are in standby state and autonomously interrupt the power supply without requiring user intervention. The sensing module and controlling module work together to self-manage the power supply, automatically cutting off electricity to devices that are not actively consuming power, thereby eliminating standby power waste while maintaining reliability for actively used devices.
3Loss of energy
If a power saving device automatically senses and responds to standby current, then power waste is reduced, but the device complexity increases due to additional sensing and controlling modules
Solution Approach 1:
The patent applies merging by integrating the sensing module and controlling module into a unified power saving device structure. The sensing module detects driving current, and the controlling module processes this information and controls the switch unit, combining multiple functions (sensing, processing, and control) into a single integrated device that manages power supply to multiple outlet sockets, thereby reducing overall system complexity despite added functionality.
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 device effectively reduces power waste by adaptively adjusting the threshold current based on device operation modes, ensuring electricity is only supplied when necessary, thereby enhancing power saving capabilities.
Implementation Method 1
a current detecting unit (11), coupled between the power supplying port (22) and the power device (2), for measuring a current signal from the power
Implementation Method 2
a switch unit (12), coupled between the power supplying port (22) and the current detecting unit (11)... switch the switch unit (12) to an open-circuit state
Data Source
AI summary
The invention discloses a power saving device capable of automatically sensing standby current, which is used in a power device such as a power outlet or other power supply devices for giving the power device ability of electricity saving. When the power saving device normally works, a threshold current setting unit of a controlling and processing module is configured to automatically calculate a threshold current based on current signals sensed by a current detecting unit under different operation modes of at least one electrical device electrically connected to the power device. Moreover, when at least one standby current sensed from the electrical device is determined to be lower than the threshold current, the controlling and processing module immediately switches a switch unit to an open-circuit state, thereby causing the electrical device unable to receive electricity from the power device. Consequently, the power device exhibits the ability of power saving.