Device-Specific Thermal Calibration for Computing Skin Temperature
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Solution Overview
Problem
Conventional computing devices lack effective thermal management algorithms that adapt to individual device properties, leading to inconsistent skin temperature regulation and potential user discomfort due to varying manufacturing variances and heat conduction properties.
Innovation Solution
A method and system for calibrating temperature mitigation algorithms by generating temperature information from multiple sensors, calculating junction temperature ramp rates, and adjusting operating voltage and frequency based on look-up table values specific to each device's thermal properties, thereby reducing skin temperature and mitigating heat-related issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional temperature mitigation algorithms are used without device-specific calibration, then the control logic is simple and universal, but skin temperature regulation is inconsistent across different devices due to manufacturing variances
Solution Approach 1:
The patent performs preliminary calibration during manufacturing by running benchmark tests and measuring temperature ramp rates, then stores device-specific parameters in a look-up table. This preliminary action captures individual device thermal characteristics before deployment, enabling consistent skin temperature regulation without adding complexity to the operational control logic.
Solution Approach 2:
The patent changes the parameters used for temperature mitigation by introducing device-specific voltage step values and temperature ramp rate thresholds stored in a look-up table. Instead of using universal mitigation parameters, the system adjusts these parameters based on measured device characteristics, improving regulation consistency across different devices.
2Ease of operation
If voltage and frequency adjustments are made without considering device-specific thermal properties, then the control algorithm is simple to implement, but user comfort is compromised due to varying heat conduction properties
Solution Approach 1:
The system performs preliminary calibration by measuring temperature ramp rates during benchmark tests and storing device-specific parameters in a look-up table. This preliminary characterization enables the operational system to achieve better user comfort through device-appropriate voltage and frequency adjustments without requiring complex real-time analysis.
Solution Approach 2:
The patent implements feedback by continuously monitoring temperature sensor readings and comparing them against device-specific thresholds from the look-up table. The system adjusts voltage and frequency based on this feedback loop, ensuring user comfort is maintained while accounting for individual device thermal properties.
3Temperature
If aggressive voltage reduction steps are applied to quickly reduce skin temperature, then skin temperature control is improved, but SOC performance degradation occurs and battery power is wasted
Solution Approach 1:
The patent changes the voltage step parameters from aggressive fixed reductions to device-specific optimized steps stored in a look-up table. By calibrating the voltage step values during manufacturing based on measured temperature ramp rates, the system achieves effective skin temperature control with minimal impact on SOC performance and battery consumption.
Solution Approach 2:
The system dynamically adjusts voltage and frequency based on real-time temperature readings compared against device-specific thresholds. Instead of applying aggressive fixed reductions, the system modulates power delivery dynamically according to actual thermal conditions, maintaining skin temperature control while preserving SOC performance.
4Measurement precision
If device-specific calibration is performed during manufacturing, then thermal management accuracy is improved, but manufacturing time and cost increase
Solution Approach 1:
The patent performs thermal calibration as a preliminary action during manufacturing by running automated benchmark tests and measuring temperature ramp rates. The measured parameters are stored in a look-up table that accompanies the device throughout its lifecycle. This preliminary characterization achieves high measurement precision without requiring complex ongoing manufacturing processes.
Solution Approach 2:
The system performs self-calibration during manufacturing by automatically running benchmark tests and capturing temperature data without requiring manual intervention. The device characterizes itself, storing its own thermal parameters in the look-up table, which reduces manufacturing complexity while achieving accurate thermal characterization.
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 allows for device-specific thermal management, enhancing user comfort and safety by effectively regulating skin temperatures and conserving battery power through tailored voltage and frequency adjustments based on unique thermal characteristics.
Implementation Method 1
the heat is spread through the internal portions of the phone to the outside surface of the phone
Implementation Method 2
As the SOC operates, it generates heat
Data Source
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AI summary
A method includes generating temperature information from a plurality of temperature sensors within a computing device; and processing the temperature information to generate voltage reduction steps based on an observed rate of change of the temperature information.