Dynamic Thermal Management for Portable Devices
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Summary
Problems
Portable computing devices (PCDs) face challenges in managing thermal loads due to the lack of active cooling systems, leading to potential critical temperature damage and performance degradation, as they rely on spatial arrangement and passive cooling methods which are often inadequate.
Innovation solutions
A method and system that utilize internal and external thermal sensors to monitor temperature and implement dynamic thermal policy management, including frequency scaling and spatial workload shifting to mitigate thermal loads while maintaining performance.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If spatial arrangement and passive cooling devices are used to manage thermal energy, then device portability is improved, but thermal management adequacy deteriorates
Why choose this principle:
The patent implements dynamic thermal policy management that adjusts cooling strategies based on real-time temperature readings from multiple sensors. The system transitions between different operational states (normal, thermal, critical) and adjusts mitigation techniques dynamically, allowing the device to maintain portability while adapting thermal management to actual conditions.
Principle concept:
If spatial arrangement and passive cooling devices are used to manage thermal energy, then device portability is improved, but thermal management adequacy deteriorates
Why choose this principle:
The system uses feedback from internal and external thermal sensors to continuously monitor temperature and adjust thermal policies. The thermal policy manager receives temperature data, determines current thermal states, and implements appropriate mitigation techniques, creating a closed-loop control system that maintains thermal safety without requiring heavy passive cooling.
Application Domain
Data Source
AI summary:
A method and system that utilize internal and external thermal sensors to monitor temperature and implement dynamic thermal policy management, including frequency scaling and spatial workload shifting to mitigate thermal loads while maintaining performance.
Abstract
A method and system for managing one or more thermal policies of a portable computing device (PCD) includes monitoring temperature of the portable computing device with internal thermal sensors and external thermal sensors. If a change in temperature has been detected by at least one thermal sensor, then a thermal policy manager may increase a frequency in which temperature readings are detected by the thermal sensors. The thermal policy manager may also determine if a current temperature of the portable computing device as detected by one or more of the thermal sensors falls within one or more predetermined thermal states. Each thermal state may be assigned a unique set of thermal mitigation techniques. Each set of thermal mitigation techniques may be different from one another. The sets of thermal mitigation techniques may differ according to quantity of techniques and impacts on performance of the PCD.