Fan Module Electrostatic Detection Speed Control
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Solution Overview
Problem
Conventional fan modules in computer systems pose a safety risk due to high-speed fan blades, and the addition of reticulation impediments to prevent finger contact reduces heat dissipation efficiency and increases module volume, while also allowing dust accumulation.
Innovation Solution
A fan module and system equipped with an electrostatic induction unit and controller that detects objects with static electricity and automatically reduces the fan's rotating speed or turns it off to prevent injury, maintaining safety and heat dissipation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the fan rotates at high speed to achieve preferable heat dissipating effect, then heat dissipation efficiency is improved, but user safety deteriorates due to risk of finger injury
Solution Approach 1:
The electrostatic induction unit performs preliminary detection of objects near the fan before the fan operates at high speed. When an object with static electricity is detected, the controller pre-adjusts the fan speed to a safe level, preventing potential injury while maintaining heat dissipation functionality.
Solution Approach 2:
The system continuously monitors the environment around the fan using the electrostatic induction unit and provides feedback to the controller. Based on this feedback, the controller dynamically adjusts fan speed, creating a closed-loop control system that balances heat dissipation efficiency with user safety.
2Object-affected harmful factors
If a reticulation impediment is disposed on the fan to prevent finger touching, then user safety is improved, but device volume increases and heat dissipation efficiency deteriorates
Solution Approach 1:
The invention extracts the safety function from the mechanical reticulation impediment and implements it through an electronic detection and control system. The electrostatic induction unit and controller provide safety protection without requiring physical barriers, thus eliminating the volume increase and heat dissipation degradation associated with reticulation structures.
3Object-affected harmful factors
If a reticulation impediment is disposed on the fan to prevent finger touching, then user safety is improved, but heat dissipation efficiency deteriorates due to dust accumulation on the reticulation
Solution Approach 1:
The invention removes the reticulation impediment entirely and replaces its protective function with an electronic safety system. This eliminates the dust accumulation problem that would otherwise degrade heat dissipation efficiency, while maintaining user safety through electrostatic detection and speed control.
4Productivity
If the fan rotates at high speed, then productivity is improved for heat dissipation, but object-generated harmful factors worsen due to potential finger injury
Solution Approach 1:
The fan speed is made dynamic rather than fixed. The controller continuously adjusts the fan speed based on real-time detection by the electrostatic induction unit, allowing the system to operate at high speed when safe and reduce speed when objects are detected, thus balancing productivity with safety.
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 reduces the risk of injury from high-speed fan blades while maintaining heat dissipation efficiency by automatically adjusting the fan speed based on detected static electricity, enhancing user safety and preventing dust accumulation on the fan module.
Implementation Method 1
When an object with static electricity gets into the electrostatic induction unit, the electrostatic induction unit outputs a sensing value to the controller
Data Source
AI summary
A fan module, especially a fan module which may reduce a rotating speed of a fan automatically when an object with static electricity gets into the fan is provided. The fan module includes a frame, a fan, an electrostatic induction unit and a controller. The fan is disposed in the frame, and the electrostatic induction unit is disposed on the frame and adjacent to the fan. The controller is electrically coupled to the electrostatic induction unit. When an object with static electricity gets into the electrostatic induction unit, the electrostatic induction unit outputs a sensing value to the controller. The controller determines whether to reduce the rotating speed of the fan according to the sensing value.