Rotation Sensing Fan for Real-Time Mode Switching
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Solution Overview
Problem
Conventional cooling fans are limited to a single operating function, such as adjusting rotational speed or direction, requiring users to choose between functions and face inconvenience and complexity in switching between them, especially in space-constrained devices like laptops and smartwatches.
Innovation Solution
A fan with rotation sensing, comprising a casing, motor, and control unit, where a rotation sensing unit detects the fan's angle and outputs signals to control the motor, allowing for real-time switching between different operation modes by adjusting the fan's rotation, thereby improving operational convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a cooling fan is designed with multiple operating functions (rotational speed control and direction control), then the fan's versatility is improved, but the device complexity increases
Solution Approach 1:
The fan integrates multiple operating functions (rotational speed control and direction control) into a single device. The motor can operate in different modes: bidirectional rotation mode for direction control and rotational speed control mode for speed adjustment, allowing one fan to replace what would traditionally require two separate fans.
Solution Approach 2:
The fan employs dynamic switching between different operation modes based on user needs. The control unit can switch between bidirectional rotation mode and rotational speed control mode, enabling the fan to adapt its functionality in real-time without requiring physical reconfiguration or multiple separate devices.
2Quantity of substance
If a cooling fan integrates multiple functions in one device, then the quantity of devices is reduced, but the ease of operation deteriorates due to complex switching procedures
Solution Approach 1:
The fan system performs self-configuration through automatic mode switching. When the fan is first powered on, it automatically enters bidirectional rotation mode. Users can switch between functions simply by issuing a direction control instruction or a rotational speed control instruction, and the control unit automatically transitions between modes without requiring manual configuration or complex switching procedures.
Solution Approach 2:
The control unit monitors the type of instruction received and automatically switches operation modes based on this feedback. When a direction control instruction is received, the system switches to bidirectional rotation mode; when a rotational speed control instruction is received, it switches to rotational speed control mode. This feedback mechanism simplifies operation by making the switching process transparent and automatic.
3Productivity
If a cooling fan allows real-time function switching, then the productivity is improved, but the device complexity increases due to additional sensing and control components
Solution Approach 1:
The patent replaces complex mechanical switching mechanisms with electronic sensing and control. A rotation sensing unit detects the fan's rotation angle and provides signals to the control unit, which then automatically switches between operation modes. This electronic approach enables real-time function switching without requiring physical reconfiguration or complex mechanical components.
Solution Approach 2:
The rotation sensing unit acts as an intermediary between the fan's physical state and the control unit. It detects rotation angle and provides feedback signals that enable the control unit to automatically determine the appropriate operation mode, facilitating real-time function switching without direct user intervention or complex control logic.
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
Enables users to switch between functions in real time, reducing switching time and enhancing usability by allowing the fan to adjust its operation mode based on its rotation, thus providing flexibility and convenience.
Implementation Method 1
a rotation sensing unit detecting a first rotation angle of the casing and outputting a first sensing signal
Implementation Method 2
a motor disposed within the casing, the control unit having a controller electrically coupled to the rotation sensing unit and the motor
Data Source
AI summary
The present invention is a fan having rotation sensing, comprising a casing, a motor disposed within the casing, a rotation sensing unit, and a control unit, the rotation sensing unit detecting a first rotation of the casing and outputting a first sensing signal, the control unit having a controller electrically coupled to the rotation sensing unit and the motor, the controller receiving the first sensing signal according thereto to control the motor to perform a first operation mode. Through this design, an operation mode of the fan can be adjusted according to the rotation of the fan in the present invention.