Serial Multi-Fan Control Using Time-Segmented Data Strings
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Solution Overview
Problem
Traditional multi-fan systems face challenges in implementing operation protocols among fan devices, requiring a large number of communication lines and complex control modules, which increases costs and design difficulties.
Innovation Solution
A multi-fan system with a control source circuit and fan devices that operate by receiving identification code signals during a first period and corresponding driving data during a second period, allowing fan devices to operate based on the received data strings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional communication methods are used for multi-fan systems, then reliable operation protocols can be implemented, but the number of communication lines and control modules increases, leading to higher cost and design difficulty
Solution Approach 1:
The patent merges the identification and driving data transmission into a single serial communication line. The control source circuit transmits both identification code signals and driving data through the same communication interface, eliminating the need for separate communication lines for each fan device. This combining approach reduces the overall number of communication lines while maintaining reliable operation protocols through sequential transmission during different time periods.
Solution Approach 2:
The patent segments the transmission process into two distinct time periods: a first period for transmitting identification code signals and a second period for transmitting driving data. This temporal segmentation allows the system to use a single communication line for multiple purposes without signal interference, reducing hardware complexity while ensuring reliable protocol implementation through structured time-multiplexed communication.
2Ease of operation
If multiple communication lines are used for each fan device, then operation control can be achieved, but the cost of the system increases
Solution Approach 1:
The patent makes the single serial communication line universal by using it for both identification code transmission and driving data transmission. The same communication interface serves multiple functions at different time periods, eliminating the need for separate dedicated lines for each function. This multi-functional approach reduces system cost while maintaining ease of operation through a unified communication protocol.
3Manufacturing precision
If separate control modules are implemented for each fan, then precise control can be achieved, but the design difficulty and cost increase
Solution Approach 1:
The patent extracts the control logic from individual fan-level modules and consolidates it into a centralized control source circuit. The control source circuit generates and transmits both identification codes and driving data, while each fan device contains only the necessary reception and execution logic. This extraction approach maintains precise control capability while significantly reducing design difficulty and cost by eliminating redundant control modules at each fan.
Solution Approach 2:
The patent introduces a serial communication line as an intermediary between the control source circuit and fan devices. This intermediary transmits both identification information and driving commands, allowing the control source circuit to maintain precise control over multiple fans without requiring complex point-to-point control modules at each fan location. The intermediary enables simplified fan-end design while preserving control precision through structured data transmission.
Data Source
AI summary
A multi-fan system and an operating method for the multi-fan system are provided. The multi-fan system includes a control source circuit and a plurality of fan devices. The control source circuit provides a first data string during a first period and provides a second data string during a second period. The first data string includes a plurality of identification code signals. The second data string includes a plurality of driving data corresponding to different identification code signals. The fan devices sequentially receive one of the identification code signals according to the first data string during the first period to obtain a corresponding identification code signal. The fan devices sequentially receive driving data corresponding to the received identification code signal according to the second data string, so as to operate using the received driving data.