Display Device Thermal Management via Dynamic Fan and Audio Masking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for preventing heat damage in electronic devices, such as head-mounted displays, often rely on cooling fans that increase noise levels when operating at high speeds, causing user annoyance.
Innovation Solution
A control method and device that utilize a processor to obtain information about the display device, including processor utilization rate, display status, wearing status, noise sound data, and rotational speed data of the heat dissipating unit, to control the system sound and heat dissipating unit, adjusting the rotational speed of the heat dissipating unit and the volume of the system sound to maintain optimal performance and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the cooling fan runs at high speed to prevent heat damage, then the temperature control is improved, but the noise level increases causing user annoyance
Solution Approach 1:
The system proactively increases cooling fan speed based on processor utilization rate before temperature becomes critically high. The processor monitors its own utilization and preemptively adjusts cooling, preventing both overheating and the need for sustained high-speed fan operation that causes noise annoyance.
Solution Approach 2:
The cooling fan speed is dynamically adjusted based on real-time processor utilization rate rather than maintaining a fixed high speed. The system continuously adapts fan speed to match actual thermal load, ensuring effective cooling when needed while minimizing noise when processor load is low.
2Temperature
If the cooling fan speed is increased to maintain low temperature, then the temperature control is improved, but the response time becomes too late when temperature is already too high
Solution Approach 1:
The system uses processor utilization rate as a leading indicator to trigger cooling actions before temperature reaches critical levels. By monitoring utilization rate and preemptively increasing fan speed, the system prevents temperature from becoming too high in the first place, eliminating the response time delay.
Solution Approach 2:
The system implements continuous feedback monitoring of processor utilization rate and adjusts cooling fan speed in real-time. This closed-loop control ensures the cooling response is timely and proportional to actual thermal demand, preventing both overheating and excessive noise.
3Object-affected harmful factors
If the system sound volume is increased to mask heat dissipating unit noise, then the user experience is improved, but the energy consumption increases
Solution Approach 1:
The system sound volume is dynamically adjusted based on heat dissipating unit noise levels. When the fan operates quietly, system sound volume is reduced to save energy. When fan speed increases and noise rises, system sound volume is proportionally increased to mask the noise, optimizing both user experience and energy consumption.
Solution Approach 2:
The system continuously monitors heat dissipating unit noise levels and adjusts system sound volume in real-time based on this feedback. This ensures sound masking is applied only when necessary, minimizing energy consumption while effectively masking fan noise when it becomes annoying.
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
The solution effectively prevents heat damage by dynamically adjusting the heat dissipating unit's rotational speed based on processor utilization and other factors, while also reducing noise annoyance by adjusting the system sound volume to mask the noise of the heat dissipating unit.
Implementation Method 1
a heat dissipating unit... controlling at least one of a system sound and the heat dissipating unit... adjusting the rotational speed of the heat dissipating unit
Data Source
AI summary
The present disclosure provides a control method applied to a display device. The display device includes a processor, a display unit and a heat dissipating unit. The control method includes: by the processor, obtaining information related to the display device, wherein the information comprises a processor utilization rate of the processor, a display status of the display unit, a wearing status of the display device, noise sound data of the heat dissipating unit, rotational speed data of the heat dissipating unit or any combination thereof; and by the processor, controlling at least one of a system sound and the heat dissipating unit according to the information related to the display device, wherein the system sound is configured to be generated by a sound output unit.