Mobile Processor Thermal Control Using Housing Surface Feedback
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Solution Overview
Problem
Microprocessors in mobile devices generate significant heat due to their complex circuitry, which can lead to overheating when housed in enclosures with limited ventilation, posing a risk to the processor and surrounding components.
Innovation Solution
A mobile device with a housing that includes temperature sensors to monitor surface temperatures, allowing the processor to adjust its energy consumption by modifying its duty cycle, clock speed, and voltage supply based on thermal data, ensuring effective heat management and prevention of overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the processor operates at high speed to maintain productivity, then the processing performance is improved, but the heat generation increases causing overheating in sealed enclosures
Solution Approach 1:
The system continuously monitors the temperature of the housing surface using temperature sensors and dynamically adjusts the processor's operating parameters (clock speed, voltage, duty cycle) based on the detected temperature. This closed-loop feedback mechanism allows the processor to maintain high performance when cool but automatically reduce power consumption and heat generation when temperature thresholds are approached, resolving the contradiction between productivity and temperature control.
2Reliability
If the housing is sealed to protect internal components, then the device durability is improved, but the heat dissipation capability is reduced
Solution Approach 1:
The system changes the operational parameters of the processor (clock speed, voltage, duty cycle) based on real-time temperature monitoring. By dynamically adjusting these parameters, the system maintains effective heat dissipation without requiring physical ventilation openings in the sealed housing, thus preserving both device durability and thermal management capability.
3Power
If the processor consumes more energy to maintain performance, then the processing capability is improved, but the thermal management becomes more difficult
Solution Approach 1:
The system dynamically adjusts the processor's power consumption and operating parameters in real-time based on temperature feedback. Rather than maintaining constant high power consumption, the system adapts its energy usage to match thermal conditions, making thermal management more effective while preserving processing capability when thermally acceptable.
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 solution dynamically adjusts energy consumption to maintain safe temperatures, preventing damage to the processor and surrounding components while effectively managing heat within a sealed housing.
Implementation Method 1
A temperature sensor detects a temperature of the portion of the surface
Implementation Method 2
The thermally conductive surface conducts heat from the processor
Data Source
AI summary
A mobile device includes a housing having a plurality of surfaces. A processor is located within the housing. The processor heats a portion of one or more of the surfaces of the housing. A temperature sensor detects a temperature of the portion of the surface. The rate of energy consumption by the processor is adjusted based on the temperature of the portion of the surface of the housing.