Power Management Controller for Electronic Devices
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Solution Overview
Problem
Conventional power management methods, such as dynamic voltage and frequency scaling (DVFS), often lead to imbalances in performance and power consumption, causing overheating or low performance due to their inability to effectively control frequency and voltage based on application domains or user-recognizable operations, especially in complex electronic devices with multiple hardware components.
Innovation Solution
A method that involves obtaining operation information recognizable to the user and load information to perform power management on electronic devices, adjusting voltage and frequency through DVFS, and considering additional parameters like power consumption, processor load, and temperature to balance performance and power consumption efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If DVFS increases frequency and voltage to improve performance, then processing speed is improved, but power consumption increases quadratically
Solution Approach 1:
The system dynamically changes operating parameters (frequency, voltage) based on actual workload characteristics and user-perceptible operations. By monitoring operation information and load information, the controller adjusts DVFS parameters to match actual needs, avoiding unnecessary high power consumption while maintaining required performance levels.
Solution Approach 2:
The system implements feedback mechanisms by continuously monitoring operation information (user-perceptible operations) and load information, then using this feedback to adjust frequency and voltage settings. This closed-loop control ensures performance is maintained only when actually needed, reducing wasted energy during low-demand periods.
2Use of energy by moving object
If DVFS lowers frequency and voltage to reduce power consumption, then energy efficiency is improved, but performance may become insufficient
Solution Approach 1:
The system dynamically adjusts frequency and voltage based on real-time operation information and load information, transitioning between low-power and high-performance states as needed. This dynamic adaptation ensures the system operates at the minimum necessary performance level, avoiding both over-provisioning (wasted energy) and under-provisioning (insufficient performance).
Solution Approach 2:
The controller changes operating parameters (frequency, voltage) in response to detected operation types and load conditions, optimizing the balance between power consumption and performance for each specific operational context.
3Ease of operation
If conventional power management operates based on hardware device only, then control simplicity is maintained, but inability to control based on application domain or user-recognizable operations causes contradictory decisions
Solution Approach 1:
The system introduces operation information and load information as intermediary layers between the hardware and control decisions. These intermediaries provide context about user-perceptible operations and actual workload, enabling more accurate and reliable power management decisions without significantly complicating the control architecture.
Data Source
AI summary
Provided is a method of managing power of an electronic device. The method includes: obtaining operation information related to an operation from among operations performed by the electronic device. The operation is recognizable to a user via a product of hardware processing performed by hardware included in the electronic device. The method also includes obtaining load information related to a load generated by the operation performed by the electronic device. In addition, the method includes performing power management on the hardware included in the electronic device based on the operation information and the load information.