Fan Module Deformation Sensor and Controller for Housing Protection
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Solution Overview
Problem
Notebook computer fans are prone to damage due to deformation of the upper housing caused by structural members, leading to reduced operational lifespan, as most fan modules run at full speed and are not effectively protected from external influences.
Innovation Solution
An electronic device with a fan module, deformation sensor, and controller that detects housing deformation and temporarily stops the fan blade from running using electromagnetic attraction or motor control, preventing damage by reducing power consumption and resuming operation when safe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the fan module runs at full speed continuously, then heat dissipation efficiency is improved, but the fan module becomes more susceptible to damage from housing deformation
Solution Approach 1:
The deformation sensor continuously monitors the housing structure and provides feedback to the controller. When deformation is detected, the controller automatically adjusts the fan operation from full speed to stopped state, creating a closed-loop control system that balances heat dissipation needs with fan protection
Solution Approach 2:
The fan module operates dynamically rather than statically at full speed. The system transitions between different operational states (running at full speed, stopping, and resuming) based on real-time deformation sensor feedback, allowing the fan to adapt its operation to current structural conditions
2Volume of moving object
If the distance between the heat dissipation fan and the upper housing is reduced, then the device structure is compacted, but the upper housing becomes more prone to deformation
Solution Approach 1:
The deformation sensor acts as an intermediary between the housing structure and the fan control system. It detects structural changes and translates them into control signals, enabling the system to respond to deformation without requiring increased physical distance between components
Solution Approach 2:
The deformation sensor is pre-installed on the housing structure to detect potential deformation before it causes fan damage. The system takes preliminary protective action by stopping the fan at the first sign of deformation, preventing the harmful effect from manifesting
3Reliability
If a deformation sensor and control mechanism are added to protect the fan, then fan module reliability is improved, but device complexity increases
Solution Approach 1:
The system implements self-service protection where the deformation sensor automatically monitors conditions and the controller autonomously adjusts fan operation. This self-regulating mechanism eliminates the need for external monitoring or manual intervention, achieving reliable fan protection through a straightforward sensor-controller-actuator loop
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 intelligent fan control mechanism extends the operational life of the fan module by preventing damage from external influences and optimizing power usage, ensuring the fan operates safely and efficiently.
Implementation Method 1
The electromagnet generates an electromagnetic attraction force after being powered up. The controller provides an electric power to the electromagnet after receiving the deformation signal so the metal fan blade stops running due to the electromagnetic attraction force.
Implementation Method 2
The deformation sensor is disposed in the containing space, and configured to detect whether the fan housing is deformed.
Data Source
AI summary
An electronic device and a method for controlling a fan operation are provided. A containing space of the electronic device has a fan module and a deformation sensor. The deformation sensor detects whether a fan housing of the fan module is deformed. The deformation sensor transmits a deformation signal to a controller when detecting that the fan housing is deformed. The controller drives a fan blade of the fan module to stop running after receiving the deformation signal.