Dual-Layer Temperature Control for Fan Noise and Overheat Protection

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Solution Overview

Problem

Conventional temperature control methods in electronic products, such as desktop computers, face challenges in reducing system noise while ensuring effective heat dissipation and reliability, particularly due to limitations in fan speed control and the risk of system overheating when the operating system crashes.

Innovation Solution

A temperature control method and system that involves a temperature control function module and hardware device, where the hardware device takes over temperature control if the function module fails, using a predefined second temperature control strategy to adjust fan speed and prevent overheating, thereby ensuring system reliability and safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If software-based temperature control function module is used to achieve complex and intelligent temperature control, then temperature control intelligence is improved, but system reliability deteriorates due to risk of overheating when operating system crashes

Engineering Contradiction:
Improvetemperature control intelligenceVSAvoidsystem reliability
Core Design Contradiction:
Extent of automationVSReliability

Solution Approach 1:

The temperature control system is segmented into two independent parts: a software-based temperature control function module for intelligent control, and a hardware-based temperature control device for reliability assurance. This segmentation allows each part to specialize in its strength while mitigating the weaknesses of the other.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The hardware-based temperature control device is designed as a backup mechanism that activates beforehand when software failure occurs. This prior cushioning ensures that even if the software-based control fails, the system still has protective capability to prevent overheating.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

2Temperature

If fan speed is increased to achieve effective heat dissipation, then heat dissipation performance is improved, but system noise increases

Engineering Contradiction:
Improveheat dissipation performanceVSAvoidsystem noise
Core Design Contradiction:
TemperatureVSObject-generated harmful factors

Solution Approach 1:

The fan speed is controlled dynamically based on real-time temperature detection and control strategies. The system adjusts fan speed according to actual thermal conditions, using higher speeds only when necessary for heat dissipation and lower speeds when temperatures are acceptable, thereby optimizing the balance between heat dissipation performance and noise generation.

Inventive Principle:
Principle #15Dynamics

3Reliability

If hardware-based temperature control is used to ensure system reliability, then system reliability is improved, but temperature control intelligence deteriorates due to limited computing capability

Engineering Contradiction:
Improvesystem reliabilityVSAvoidtemperature control intelligence
Core Design Contradiction:
ReliabilityVSExtent of automation

Solution Approach 1:

The system merges the software-based temperature control function module with the hardware-based temperature control device into a unified temperature control system. This combination allows the software component to provide intelligent control algorithms while the hardware component ensures reliable execution, creating a synergistic effect that achieves both intelligence and reliability.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS8136366B2Method, system and hardware device for temperature control
Publication Date: 2012.03.20 LENOVO SOFTWARE
  • US8136366B2 patent drawing
  • US8136366B2 patent drawing
  • US8136366B2 patent drawing

AI summary

The invention provides a temperature control method, system and hardware device, wherein, the method comprising: after the system logs in operation system, a temperature control function module obtains a temperature-control control right, and controls the system temperature based on predefined first temperature control strategy; if it is determined that the temperature control function module is at fault and stops working, a temperature control hardware device obtains the temperature-control control right, and controls the system temperature based on predefined second temperature control strategy. The system comprises a temperature control hardware device and a temperature control function module. The temperature control hardware device comprises: a temperature detecting unit, a fan detecting unit, a temperature control logic unit and a timing unit, wherein the timing unit periodically determines if the temperature control function module based on operation system works normally, and if fault occurs in the temperature control function module, activates the temperature control logic unit. The above technical solution can achieve better temperature control effect and improve the system reliability as a whole.