Fan Speed Control Using Combined Load Parameters
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Solution Overview
Problem
Existing fan speed control methods for computer systems often result in rapid fluctuations in fan speed due to varying load conditions, leading to noise issues during cooling operations.
Innovation Solution
A method and device that involve a controller obtaining load parameters from both the main board and expansion board, determining the greater load parameter, and controlling the fan speed accordingly to maintain steady operation and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If fan speed is controlled based on expansion board load parameters, then cooling performance for expansion devices is improved, but fan speed fluctuates rapidly causing noise increase
Solution Approach 1:
The patent merges the load parameter monitoring functions of both the main board and expansion board into a unified fan control system. The controller integrates temperature and load data from multiple sources (main board CPU, GPU, storage devices, and expansion board devices) to make comprehensive fan speed decisions, preventing rapid fluctuations caused by isolated expansion board changes.
Solution Approach 2:
The controller acts as an intermediary between multiple heat sources and the fan system. It processes load parameters from various components and mediates fan speed adjustments based on overall system conditions rather than reacting directly to individual component changes, thereby stabilizing fan operation and reducing noise.
2Productivity
If fan speed is adjusted rapidly in response to load changes, then cooling efficiency is improved, but system stability deteriorates
Solution Approach 1:
The system performs preliminary monitoring of load parameters from multiple sources before making fan speed adjustments. By anticipating thermal conditions based on load changes and proactively adjusting fan speed in a controlled manner, the system maintains cooling efficiency while avoiding abrupt speed changes that would compromise stability.
Solution Approach 2:
The patent implements dynamic fan speed control that adapts to varying system conditions while maintaining stability. The controller continuously monitors load parameters and adjusts fan speed within optimized ranges based on the greater of main board or expansion board loads, ensuring responsive cooling without excessive fluctuation.
3Measurement precision
If multiple load parameters are monitored, then cooling accuracy is improved, but control complexity increases
Solution Approach 1:
The patent applies local quality by monitoring specific critical load parameters from key components (CPU, GPU, storage devices on main board and expansion board) rather than attempting to monitor all possible parameters. This selective monitoring approach maintains cooling accuracy by focusing on the most thermally significant components while avoiding the complexity of comprehensive system-wide parameter tracking.
Data Source
AI summary
A fan speed control method, performed by a controller, includes: obtaining a first load parameter associated with a main board; obtaining a second load parameter associated with an expansion board; determining a greater one of the first load parameter and the second load parameter, and controlling a fan according to the greater one.