Dynamic Thermal Control Using Local and Reference Temperatures
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Solution Overview
Problem
As electronic devices become more integrated and operate at higher speeds, effective thermal management becomes crucial to prevent overheating, which can lead to malfunction, reliability degradation, and user safety concerns, as existing methods often rely on fixed target temperatures that fail to adapt to changing operational conditions.
Innovation Solution
A dynamic thermal management method that involves measuring local and reference temperatures, adjusting a target temperature based on thermal coupling, and controlling power output to maintain stable operation, ensuring performance when temperatures are low and stability when high.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed target temperature is used for thermal management, then the control method is simple, but it fails to adapt to changing operational conditions and may cause overheating or performance degradation
Solution Approach 1:
The patent implements dynamic thermal management by continuously adjusting the target temperature based on real-time measurements from multiple temperature sensors. Instead of using a fixed threshold, the system dynamically modifies the target temperature according to current operational conditions and thermal states, enabling adaptation to changing workloads and environmental conditions while maintaining manageable system complexity through systematic control algorithms
Solution Approach 2:
The system employs multiple temperature sensors positioned at different locations to continuously monitor thermal conditions and provide feedback to the temperature management unit. This feedback mechanism enables the system to detect temperature changes and adjust the target temperature accordingly, achieving adaptability to changing operational conditions while maintaining a structured control approach
2Measurement precision
If multiple temperature sensors are deployed to monitor different spots, then temperature measurement accuracy improves, but device complexity and cost increase
Solution Approach 1:
The patent places temperature sensors at specific strategic locations including hot spots and reference spots rather than uniformly distributing them throughout the device. Each sensor is positioned to monitor critical thermal zones, ensuring accurate temperature measurement where it matters most while minimizing the total number of sensors required. The temperature management unit processes readings from these strategically placed sensors to make informed thermal management decisions
Solution Approach 2:
The patent introduces a reference temperature sensor that measures temperature at a reference spot thermally coupled to the local spot but not directly exposed to heat sources. This reference measurement serves as an intermediary indicator of overall thermal conditions, allowing the system to infer broader thermal states without requiring extensive sensor coverage throughout the entire device
3Reliability
If the target temperature is lowered to ensure stability, then reliability improves, but device performance and power output are reduced
Solution Approach 1:
The system dynamically adjusts the target temperature based on real-time thermal conditions rather than using a conservative fixed low threshold. When temperature measurements indicate safe operating conditions, the target temperature is raised to allow higher performance and power output. When temperatures approach concerning levels, the target temperature is lowered to maintain stability. This dynamic approach enables the system to achieve both reliability and productivity by adapting the target temperature to current operational context
Solution Approach 2:
The patent modifies the target temperature parameter based on measurements from multiple temperature sensors and thermal coupling relationships. By changing this critical control parameter dynamically rather than maintaining a fixed conservative value, the system can optimize the balance between reliability and productivity. The temperature management unit calculates appropriate target temperature values that ensure stability while maximizing performance potential
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 efficiently manages thermal conditions by dynamically adjusting target temperatures, preventing overheating and maintaining performance and stability in electronic devices, thereby enhancing operational reliability and user safety.
Implementation Method 1
providing a local temperature measurement by measuring a local temperature of a local spot in the electronic device
Implementation Method 2
providing a reference temperature measurement by measuring a reference temperature of a reference spot in the electronic device, the reference spot being thermally coupled to the local spot
Data Source
AI summary
To dynamically manage a temperature of an electronic device, a local temperature is provided by measuring a temperature of a local spot in the electronic device and a reference temperature is provided by measuring a temperature of a reference spot in the electronic device where the reference spot and the local spot are thermally coupled. A target temperature corresponding to a limit value of the reference temperature is adjusted based on the local temperature and a power level of the electronic device is controlled based on the same target temperature. The target temperature may be set to a relatively high value to secure performance of the electronic device when the local temperature is relatively low. Alternatively, the target temperature may be set to a relatively low value to pursue stability of the electronic device when the local temperature is relatively high.