Multiprocessor Fan Control Device Segmentation
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Solution Overview
Problem
Current fan control systems, relying on single control units, face limitations in stability, speed control resolution, and functionality due to overloading as communication speeds increase, necessitating a more efficient motor-control architecture.
Innovation Solution
A fan control device with a multiprocessor configuration, comprising a communication-processing processor, a fan-controlling processor, and a detection processor, each handling distinct functions such as generating control signals, controlling fan speed, and detecting ambient and fan states, respectively, with physically separated units to enhance efficiency and reduce complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single control unit is used to control fan speed via digital control signals, then the control resolution and stability are improved, but the control unit becomes overloaded as communication speed increases and more functions are added
Solution Approach 1:
The patent divides the control system into multiple independent control units, each responsible for specific functions (speed control, position control, communication). This segmentation prevents any single unit from becoming overloaded while maintaining high control resolution through dedicated processing for each function.
2Adaptability or versatility
If more functions are added to the control unit to improve versatility, then the adaptability is improved, but the control unit becomes overloaded and motor-control function is limited
Solution Approach 1:
The patent implements functional segmentation where different control units handle different aspects of motor control. This allows the system to be highly versatile by adding functions to specific units without compromising the reliability of core motor-control functions, as each unit operates independently with dedicated resources.
Solution Approach 2:
The patent creates a modular control architecture where control units can perform multiple functions through standardized interfaces. Each unit is designed to be multi-functional yet specialized, allowing the system to adapt to different control requirements while maintaining reliable motor control through dedicated processing units.
3Device complexity
If analog control signals are used to control fan speed, then the control circuit complexity is reduced, but the speed stability and control resolution deteriorate
Solution Approach 1:
The patent replaces analog control mechanisms with digital control units that process control signals electronically. This substitution maintains relatively simple circuit architecture while dramatically improving speed control resolution and stability through digital signal processing and precise PWM generation in dedicated control units.
Data Source
AI summary
A fan control device for controlling a fan includes a communication-processing processor, a fan-controlling processor, and a detection processor. The communication-processing processor receives a fan-controlling instruction from an external system to generate a control signal, generates a detection signal according to a detection request of the external system, and provides state information for the external system. The fan-controlling processor controls the speed of the fan according to the control signal and transmits a control result to the communication-processing processor. The detection processor detects the ambient state and the fan state of the fan according to the detection signal, and generates the state information according to the ambient state and the fan state. The communication-processing processor, the fan-controlling processor, and the detection processor are physically separated from one another.