Closed-Loop Cooling Control for Electronic Components
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Solution Overview
Problem
Conventional fan control systems in electronic devices are inadequate for components that generate significant heat, as they are typically tied to temperature conditions of a single component or restricted area, leading to either inadequate or excessive cooling for other components affected by fan airflow.
Innovation Solution
A system that receives temperature inputs from both upstream and downstream heat-generating components relative to a cooling element, using a microcontroller to adjust fan speed based on the highest thermal condition to ensure optimal cooling while minimizing airflow, and incorporating redundancy to prevent thermal shutdown in case of sensor failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If fan control is tied to temperature conditions for one component or restricted area, then the cooling for that specific component is optimized, but the cooling for other components affected by fan airflow becomes inadequate or excessive
Solution Approach 1:
The patent divides the monitoring system into multiple independent temperature sensors positioned at different locations (upstream and downstream of the cooling element), each monitoring the thermal conditions of specific components. This segmentation allows independent temperature measurement for each component while the controller integrates these measurements to provide comprehensive cooling control for all components affected by fan airflow.
2Temperature
If fan speed is increased to cool high-heat components, then cooling effectiveness is improved, but energy consumption and airflow excess increase
Solution Approach 1:
The patent implements a feedback control system where temperature sensors continuously monitor the thermal conditions of components, and the controller adjusts fan speed based on real-time temperature readings from both upstream and downstream locations. This closed-loop feedback mechanism ensures the fan operates at the minimum necessary speed to maintain acceptable temperatures, preventing both under-cooling and excessive energy consumption.
3Reliability
If multiple temperature sensors are deployed throughout the system, then comprehensive temperature monitoring is achieved, but system complexity and cost increase
Solution Approach 1:
The patent places temperature sensors at specific critical locations (upstream and downstream of the cooling element) where thermal conditions are most relevant to component performance. This localized sensor placement provides sufficient monitoring coverage for reliable thermal management without requiring comprehensive sensor deployment throughout the entire system, thereby balancing reliability with complexity.
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
This approach ensures more precise and adaptive cooling, reducing the risk of under- or over-cooling and providing additional time to respond to failures, thus maintaining system stability and efficiency.
Implementation Method 1
cooling element to cool the first and second heat generating components
Data Source
AI summary
An embodiment provides a method, including: receiving, from a temperature sensor disposed within an electronic device, temperature input relative to a first heat generating component; the first heat generating component being upstream of a cooling element of the electronic device; receiving, from a temperature sensor disposed within an electronic device, temperature input relative to a second heat generating component; the second heat generating component being downstream of the cooling element; and controlling the cooling element to cool the first and second heat generating components based on both the temperature input relative to the first heat generating component and the temperature input relative to the second heat generating component. Other aspects are described and claimed.