Smart Fan Protocol Switching for Mixed Control Box Compatibility
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Solution Overview
Problem
Existing cooling fan systems face limitations in compatibility and control due to the limited number of fan headers on motherboards, leading to interference in FG signals when connecting digital fans to traditional control boxes, and the need for separate control boxes increases user costs.
Innovation Solution
A smart fan design with an electronic chip that can switch between normal and data packet transmission modes, allowing compatibility with both traditional and digital control boxes by assigning priority or non-priority identifiers and using various communication protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If digital fans are connected to traditional control boxes, then fan control functionality is achieved, but FG signal interference occurs and system reliability deteriorates
Solution Approach 1:
The patent introduces an identification module as an intermediary component that detects the type of control box (traditional or digital) and mediates the communication protocol accordingly. This intermediary layer prevents direct conflict between digital fan signals and traditional control box FG signal lines, eliminating signal interference while maintaining compatibility with both control box types.
Solution Approach 2:
The patent implements dynamic communication protocol switching based on the detected control box type. The fan dynamically adjusts its communication mode (UART/I2C for digital control boxes, PWM for traditional control boxes) to match the control box capabilities, ensuring reliable operation without signal interference in either scenario.
2Adaptability or versatility
If multiple control boxes are used to support both traditional and digital fans, then all fans can be controlled, but user cost increases
Solution Approach 1:
The patent makes the single control box universal by equipping it with an identification module that automatically detects whether a digital or traditional fan is connected. The control box then adapts its communication protocol accordingly, allowing one control box to manage both digital and traditional fans without requiring separate control boxes for each fan type.
Solution Approach 2:
The control box changes its operational parameters (communication protocol, signal handling) based on the detected fan type. This parameter adaptation allows the same hardware to function correctly with different fan types, eliminating the need for multiple specialized control boxes and reducing user costs.
3Reliability
If separate control boxes are provided for traditional and digital fans, then each fan type operates reliably, but device complexity increases
Solution Approach 1:
The patent merges the functionality of separate traditional and digital control boxes into a single unified control box. The identification module detects the fan type and automatically configures the appropriate communication protocol, combining the reliability benefits of specialized control into one adaptable device, thereby reducing overall system complexity.
4Adaptability or versatility
If identification module and multiple communication protocols are added, then compatibility with various control boxes is achieved, but fan structure complexity increases
Solution Approach 1:
The identification module serves as a compact intermediary component that simplifies the overall architecture by centralizing the detection and protocol selection logic. Rather than requiring complex hardware modifications throughout the fan, this single modular component handles all adaptation needs, minimizing structural complexity while maximizing compatibility.
Data Source
AI summary
A smart fan compatible with various cooling fan control box is disclosed. The smart fan has an electronic chip and at least one connector. In case of the electrical connector being connected to a control box, the electronic chip switches the smart fan to a normal control mode or a data packet transmission mode. In the normal control mode, a priority identifier or a non-priority identifier of the smart fan is firstly set, and then the smart fan is controlled so as to operate in the normal control mode. In addition, after being switched to the data packet transmission mode, the control box and the smart fan conduct a data packet transmission according to a specific communication protocol, such that a rotation speed control, a rotation speed monitoring and a function setting of the smart fan can be carried out.