Speed regulation control method and system for direct-current brushless ceiling fan based on single firing line

Abstract

The invention aims at providing a speed regulation control method and system for a direct-current brushless ceiling fan based on a single firing line. The direct-current brushless ceiling fan can be subjected to one-to-one speed regulation control based on a traditional ceiling fan wiring mode. According to the speed regulation control method, a ceiling fan wall control unit supplies power to a ceiling fan driving unit through the single firing line and sends a speed regulation signal to the single firing line. The method comprises the following specific steps that A, the ceiling fan wall control unit converts a gear signal into a corresponding gear value and then converts the gear value into a corresponding control signal, so that the single firing line is controlled to be connected or disconnected according to the control signal, and accordingly a speed regulation signal composed of discontinuous alternating-current signals is formed on the single firing line; the ceiling fan wall control unit keeps the connected single firing line when not sending the speed regulation signal; B, the ceiling fan driving unit uses a signal extraction module for acquiring the speed regulation signal from the single firing line, acquires the gear value according to the on-off time of the alternating-current signals in the speed regulation signal and accordingly controls the rotation speed of a ceiling fan motor according to the gear value.

Description

technical field [0001] The invention belongs to the technical field of ceiling fans, and in particular relates to a DC brushless ceiling fan speed regulation control system and a speed regulation control method. Background technique [0002] With the rapid development of DC brushless motors, DC brushless ceiling fans using DC brushless motors have gradually begun to replace traditional ceiling fans. The traditional ceiling fan uses an induction motor to drive the fan blades to rotate. The induction motor is directly driven by AC. The speed regulation control principle is to directly adjust the voltage of the live wire with a thyristor or use a capacitor to adjust the voltage of the live wire to achieve the adjustment of the speed. The drive of the DC brushless motor is to first convert the AC power into DC power, and then use a field effect tube to drive the motor. Therefore, the driving principle of the DC brushless ceiling fan is different from that of the traditional ceil...

AI Technical Summary

Problems solved by technology

The drive of the DC brushless motor is to first convert the AC power into DC power, and then use a field effect tube to drive the motor. Therefore, the driving principle of the DC brushless ceiling fan is different from that of the traditional ceiling fan, which leads to the inability to adjust the speed of the traditional ceiling fan. Applied to DC brushless ceiling fans

[0003] At present, the speed control of brushless DC ceiling fans is controlled by remote control. The remote control is used to send the control signal to the ceiling fan controller by wireless transmission. However, this control method has great limitations. For example, when a hall When multiple ceiling fans are set at the same time, the control signal will be received by multiple ceiling fan controllers at the same time, so it is difficult for the remote control to control the DC brushless ceiling fan one by one

Of course, in order to solve this problem, each ceiling fan can be connected to the corresponding controller through an additional control line, but this will increase the difficulty of wiring, which is unacceptable to customers who have already installed the line; or each ceiling fan They all correspond to a remote control, but this will cause confusion in the management between the remote control and the ceiling fan

The disadvantages of the above-mentioned speed control greatly limit the application occasions of DC brushless ceiling fans, so it is necessary to propose a DC brushless ceiling fan speed control system with simple wiring and one-to-one control

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