Brushless Fan Lamp Control for Switch Life and Dimming
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Solution Overview
Problem
Traditional fan lamps with zipper switches face high costs and short electrical performance life, failing to efficiently control direct-current brushless motors for fan rotation direction and speed, and energy-saving dimming for lighting lamps.
Innovation Solution
A fan lamp system with a fan module, lighting module, switch unit, signal conversion unit, and fan lamp controller, where the signal conversion unit converts switching signals into digital control signals to control fan and lighting functions, using a direct-current brushless motor and LED lighting, reducing hardware costs and extending switch life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a zipper switch is used to control the fan and lighting, then the control function is achieved, but the electrical performance life is short (30,000 to 50,000 times) and costs are high
Solution Approach 1:
The patent replaces the mechanical zipper switch with an electronic control system consisting of a control button, signal conversion unit, and microcontroller. This substitution eliminates the mechanical contact wear issue, extending the control system's operational life from 30,000-50,000 times to over 1,000,000 times, while reducing hardware costs through the use of low-cost electronic components.
Solution Approach 2:
The patent introduces a signal conversion unit as an intermediary between the control button and the motor driver. This unit converts the control signal into appropriate drive signals for the brushless motor, enabling precise control of rotation direction and speed without requiring complex wiring or high-power switches, thus simplifying the overall control system.
2Use of energy by moving object
If a direct-current brushless motor is used to reduce power consumption and improve stability, then energy efficiency is improved, but the original zipper switch cannot meet the requirement of switching between clockwise and anticlockwise rotation and free speed formulation
Solution Approach 1:
The patent implements dynamic control of the brushless motor by using a microcontroller to generate PWM signals that adjust the motor's rotation speed and direction in real-time. The control system can freely formulate speeds for different gears and switch between clockwise and anticlockwise rotation, providing full adaptability while maintaining the energy efficiency of the brushless motor.
Solution Approach 2:
The patent controls the brushless motor by changing electrical parameters (voltage, current, phase sequence) through the signal conversion unit and microcontroller. By adjusting these parameters, the system achieves flexible control over rotation direction and speed, enabling the motor to meet diverse operational requirements while maintaining low power consumption.
3Ease of operation
If another zipper switch is used to control the lighting lamp for turning on and off, then the control function is achieved, but the costs are high and electrical performance life is short, and energy-saving dimming cannot be achieved
Solution Approach 1:
The patent uses a single control button that can trigger different control signals for both the fan motor and the lighting lamp. The signal conversion unit and microcontroller differentiate between fan control and lighting control based on the control signal pattern, enabling one component to perform multiple functions. This eliminates the need for separate switches, extending reliability while enabling additional functionality like dimming.
Solution Approach 2:
The patent implements lighting control by using periodic or pulsed control signals from the control button. The microcontroller processes these signals to achieve dimming effects by varying the duty cycle of the control signal, allowing energy-saving dimming functionality while using the same reliable electronic control system for both fan and lighting.
Data Source
AI summary
The present disclosure discloses a fan lamp and a fan lamp controller. The fan lamp includes a fan module, which includes at least one fan. Each of the fans includes a fan main body and a direct-current brushless motor. The lighting module includes at least one lighting lamp. A switch unit includes at least two control switches. A signal conversion unit, electrically connected to the switch unit and configured to receive the switching signals of the at least two control switches and generate corresponding digital control signals. And a fan lamp controller, electrically connected to the direct-current brushless motor, the lighting lamp, and the signal conversion unit and configured to receive the digital control signals, generate a fan driving signal and a lighting control signal according to the digital control signals. The fan lamp has relatively high reliability.