Ceiling Fan Brushless Motor Reversing via Integrated Remote Control
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Solution Overview
Problem
Conventional ceiling fan control structures require manual adjustment of a forward and reverse rotation switch for remote control operation, leading to inconvenience and limitations in use.
Innovation Solution
A DC brushless ceiling fan manual and remote control forward and reverse rotation control device featuring a remote controller module with a microcontroller unit, relays, and diodes, and a manual controller module with detectors and a motor driving unit, allowing for multi-mode control of the ceiling fan's rotation direction and speed without additional wiring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a remote control receiver is installed between the power supply and the manual controller to enable remote control, then remote control capability is improved, but the forward and reverse rotation control remains limited to manual operation only, causing inconvenience in use
Solution Approach 1:
The patent integrates both remote control receiver and manual controller into a unified control system that can handle both speed control and forward-reverse rotation control through a single control interface. The controller module processes both AC signal inputs (from remote control) and DC signal inputs (from manual switch), enabling the motor to respond to a single type of control signal for both functions, thus eliminating the limitation where remote control could only adjust speed but not rotation direction.
2Adaptability or versatility
If additional wiring is required to connect the remote control receiver to achieve remote control, then remote control function is added, but the device complexity and installation difficulty increase
Solution Approach 1:
The patent merges the remote control receiver and manual controller into a single integrated control module. The controller module includes both an AC signal input terminal for receiving remote control signals and a DC signal input terminal for receiving manual switch signals, along with a unified control circuit that processes both signal types. This integration eliminates the need for separate wiring paths and reduces installation complexity while maintaining both control functions.
3Ease of manufacture
If the remote control receiver is connected to the manual controller with existing control lines, then installation is simplified, but the remote control cannot control forward and reverse rotation
Solution Approach 1:
The patent implements dynamic signal processing where the controller module can adaptively respond to different types of control signals (AC from remote control, DC from manual switch) through a single control interface. The control circuit dynamically adjusts its operation based on the received signal type, enabling the system to perform both speed control and rotation direction control through the same wiring infrastructure, thus achieving full remote control functionality without additional wiring.
Data Source
AI summary
Disclosed are a manual and remote control forward and reverse rotation control device and its control method for DC brushless ceiling fans. The control device includes a power supply, a remote control, a manual control switch assembly and a ceiling fan brushless motor which are electrically connected with one another. A gear position signal can be inputted from a remote end to determine and control the forward and reverse rotations of a brushless motor of the ceiling fan. The remote control can be connected externally by an existing control line or a manual controller module without requiring additional wiring, so as to improve the diversity of structural mechanism, increase the versatility of remote operation, and achieve good functionality and variability of applications.