Simple control system and method for a fan light

Abstract

This invention relates to a simplified control system and method for a fan-shaped light, comprising a switch control module for generating power signal waveforms and a receiving and decoding module for decoding signal waveforms. The switch control module includes a mechanical switch assembly for outputting motor control signals. The mechanical switch assembly includes a waveform generation circuit and a fan switch. The waveform generation circuit includes a first diode, a second diode, and a live wire. The fan switch includes low-speed, medium-speed, and high-speed settings, as well as a forward / reverse switching setting. The low-speed setting is connected to the first diode to generate a negative half-wave signal, the medium-speed setting is connected to the second diode to generate a positive half-wave signal, and the high-speed setting is connected to the live wire to generate a full-wave signal. When the high-speed setting is active, the forward / reverse switching setting is triggered to generate a forward / reverse switching signal. The aforementioned live wire can be understood as an internal live wire. This invention utilizes power signal waveform modulation and decoding technology to achieve mechanical switch control of fan start / stop, speed adjustment, forward / reverse rotation, and light switching functions.

Description

Technical Field

[0001] This invention relates to a simple control system and method for a fan light, belonging to the field of household appliance control. Background Technology

[0002] DC fan lights that combine lighting and ventilation functions are widely used, but due to limitations in the design of the control circuit, the current control of DC fan lights mainly uses two methods: remote control or pull cord switch. Remote control is convenient but easy to lose, while pull cord switch is inconvenient to operate and not intuitive to control. When paired with a traditional wall switch, it can only achieve the limited function of turning the fan light on or off, which cannot meet the diverse needs of users in different scenarios.

[0003] Furthermore, traditional control methods such as FM radio, infrared, Bluetooth, and Wi-Fi signals also have many shortcomings. For example, FM radio signals are susceptible to interference and have limited transmission distance; infrared signals are highly directional, require straight-line transmission, and are easily blocked; Bluetooth signals, while capable of short-range communication, are complex to connect to and have poor stability; and Wi-Fi signals, while having wide coverage, rely on a network and may have latency and security risks. In practical applications, these methods often suffer from signal interference, limited transmission distance, poor device compatibility, and insufficient security, affecting user experience and stable device control. Summary of the Invention

[0004] This invention provides a simple control system and method for a fan-light, aiming to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a control system and method for a fan-light, which, through power signal waveform modulation and decoding technology, enables a wall switch to directly control the start / stop, speed adjustment, forward / reverse rotation of a DC fan, as well as the on / off function of the light.

[0005] The technical solution of the present invention relates, in one aspect, to a control system for a fan light, comprising:

[0006] The device includes a switch control module for generating various power signal waveforms and a receiving and decoding module for decoding signal waveforms. The switch control module includes a mechanical switch assembly for outputting fan motor control signals. The mechanical switch assembly includes a waveform generation circuit and a fan switch with multiple speed settings. The waveform generation circuit includes a first diode, a second diode, and a live wire. The fan switch includes low speed, medium speed, and high speed settings, as well as a forward / reverse switching setting. The low speed setting is connected to the first diode to generate a negative half-wave signal, the medium speed setting is connected to the second diode to generate a positive half-wave signal, and the high speed setting is connected to the live wire to generate a full-wave signal. When the device is in the high speed setting, the forward / reverse switching setting is triggered to generate a forward / reverse switching signal.

[0007] Furthermore, when in high speed mode, the forward / reverse switching mode is triggered, generating a short power-on / off cycle to produce a sequence of on / off pulses that serve as the forward / reverse switching signal.

[0008] Furthermore, the receiving and decoding module includes an optocoupler isolation detection unit and a microcontroller. The optocoupler isolation detection unit samples the power signal waveform and converts it into a digital signal, which is then input into the microcontroller to control the fan motor and the lamps.

[0009] Furthermore, the receiving and decoding module has a built-in wireless extension module to allow external devices to simultaneously display the status of the switch control module and to enable voice control.

[0010] Furthermore, the switch control module also includes a light switch for outputting lighting control signals.

[0011] Furthermore, the switch control module also includes a light switch, a fan AC power input interface, and a light AC power input interface; the fan motor control signal generated after the fan AC power passes through the fan AC power interface, the fan switch, and the waveform generation circuit is input to the receiving and decoding module; the light control signal generated after the light AC power passes through the light AC power input interface and the light switch is input to the receiving and decoding module.

[0012] Furthermore, the receiving and decoding module includes a receiver, and a fan signal detector, a fan motor power supply, a first microcontroller, and a motor controller connected in sequence, as well as a light detector, a light power supply, a second microcontroller, and a light controller connected in sequence; the fan signal detector is used to receive fan motor control signals, and the light signal detector is used to receive light control signals; the first microcontroller and the second microcontroller are respectively connected to the receiver; the motor controller is connected to the fan motor, and the light controller is connected to the lamp.

[0013] Furthermore, the switch control module also includes a light switch and an AC power input interface; the fan motor control signal generated by the AC power supply passing through the AC power input interface, the fan switch, and the waveform generation circuit is input to the receiving and decoding module, and output after being decoded by the receiving and decoding module to control the fan motor; the light control signal generated by the AC power supply passing through the AC power input interface and the light switch directly controls the lamp.

[0014] Furthermore, the switch control module also includes an AC input interface; the fan motor control signal generated after the fan AC power passes through the AC input interface, the fan switch and the waveform generation circuit is input to the receiving and decoding module, and output after being decoded by the receiving and decoding module to control the fan motor.

[0015] Another aspect of the technical solution of the present invention relates to a control method for a fan light, applied to the control system of the fan light in the above embodiment; the method includes the following steps:

[0016] When a continuous half-wave signal is received, the fan motor speed is adjusted to a low or medium speed. When a positive half-wave signal is received, the microcontroller interprets it as a higher speed, and the fan speed is adjusted to a medium speed when a positive half-wave is received, and to a low speed when a negative half-wave is received.

[0017] When a continuous full-wave signal is received, the fan speed is adjusted to the highest speed setting.

[0018] Upon receiving a short-time on / off pulse sequence, the microcontroller sends a reverse command to the fan motor.

[0019] The beneficial effects of this invention are as follows.

[0020] This invention discloses a simplified control system and method for a ceiling fan light, based on a mechanical switch-based DC ceiling fan light wall control system. Through power signal waveform modulation and decoding technology, it enables direct control of the DC fan's start / stop, speed adjustment, forward / reverse rotation, and light on / off functions via a wall switch, while also being compatible with wireless remote control operation. This invention achieves precise control of the DC ceiling fan light by embedding specific control command waveforms into the power signal and decoding them in the fan light's control unit. Users do not need to rely on complex wireless devices; they can adjust various functions of the fan light simply by operating a wall switch. This reduces system complexity and cost, improves system stability and reliability, avoids problems such as wireless signal interference, and its compatibility with wireless remote control operation provides users with greater convenience. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of a system structure that uses a wall control combined with a dual-wire electrical control method according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of a system structure that uses a wall-mounted control system combined with a single live wire electrical control method according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of a system structure according to an embodiment of the present invention, which adopts a wall control combined with a single live wire and no-lamp electrical control method.

[0025] Figure 4 This is a circuit schematic diagram of the main control circuit according to an embodiment of the present invention.

[0026] Figure 5 This is a circuit diagram of the secondary control circuit according to an embodiment of the present invention.

[0027] Figure 6 This is a circuit diagram of a current amplifier circuit according to an embodiment of the present invention.

[0028] Figure 7 This is a circuit diagram of a lighting control signal decoding circuit and a fan control signal decoding circuit according to an embodiment of the present invention.

[0029] Figure 8 This is a circuit diagram of a motor power circuit according to an embodiment of the present invention.

[0030] Figure 9 This is a circuit diagram of the motor power input circuit according to an embodiment of the present invention.

[0031] Figure 10 This is a circuit diagram of a voltage sampling circuit according to an embodiment of the present invention.

[0032] Figure 11 This is a circuit diagram of the lamp power input circuit according to an embodiment of the present invention.

[0033] Figure 12 This is a circuit diagram of a lamp source control circuit according to an embodiment of the present invention. Detailed Implementation

[0034] The following will provide a clear and complete description of the concept, specific structure, and technical effects of the present invention in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of the present invention. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0035] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," "right," "top," and "bottom" used in this invention are only relative to the relative positional relationships of the various components of the invention in the accompanying drawings.

[0036] Furthermore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and not for limiting the invention. The term "and / or" as used herein includes any combination of one or more of the associated listed items.

[0037] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various elements, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from one another. For example, without departing from the scope of this disclosure, a first element may also be referred to as a second element, and similarly, a second element may also be referred to as a first element.

[0038] See Figures 1 to 12 The fan light control system of this invention includes a switch control module for generating various power signal waveforms and a receiving and decoding module for decoding signal waveforms. The switch control module includes a mechanical switch assembly for outputting fan motor control signals. The mechanical switch assembly includes a waveform generation circuit and a fan switch with multiple speed settings. The waveform generation circuit includes a first diode, a second diode, and a live wire. The fan switch includes low speed, medium speed, and high speed settings, as well as a forward / reverse switching setting. The low speed setting is connected to the first diode to generate a negative half-wave signal, the medium speed setting is connected to the second diode to generate a positive half-wave signal, and the high speed setting is connected to the live wire to generate a full-wave signal. When the fan is in high speed mode, the forward / reverse switching setting is triggered to generate a forward / reverse switching signal. The aforementioned live wire can be understood as an internal live wire.

[0039] Traditional technologies mainly rely on wireless FM signals or infrared, Bluetooth, and Wi-Fi signals to control the speed, on / off, and direction of DC ceiling fan lights. However, this invention adopts a new control method. Its DC ceiling fan light wall control system based on mechanical switches uses power signal waveform modulation and decoding technology to enable the wall switch to directly control the start / stop, speed adjustment, forward / reverse rotation, and light on / off functions of the DC fan, while also being compatible with wireless remote control operation.

[0040] In some specific embodiments, the switch control module includes a mechanical switch assembly and a light switch. The mechanical switch assembly includes a fan switch with multiple speed settings and a waveform generation circuit composed of a first diode, a second diode, and a live wire connected in parallel. The fan switch includes an off position, a low speed position, a medium speed position, and a forward / reverse switching position. See also Figures 1 to 3The low-speed setting connects to the first diode, which conducts only the negative half-wave, achieving a 50% duty cycle output. The medium-speed setting connects to the second diode, which conducts only the positive half-wave, also achieving a 50% duty cycle output, which the MCU interprets as a higher speed. The high-speed setting connects to the live wire, achieving full-wave conduction and a 100% duty cycle output. When the fan switch is in the off position, the fan is off. When the fan switch is in the high-speed setting, it triggers the forward / reverse switching mode, causing the circuit to power on and off once, generating an on / off pulse sequence and sending it to the MCU to achieve forward / reverse switching of the fan rotation direction. It is understood that both the fan switch and the light switch of this invention can be wall switches. Furthermore, the cathode of the first diode is connected to the fan switch, the anode of the first diode is connected to the receiving and decoding module, and the anode of the second diode is connected to the fan switch and its cathode is connected to the receiving and decoding module.

[0041] This invention uses physical contacts to switch the diode array in the waveform generation circuit, altering the current waveform characteristics of the live wire. Through power signal waveform modulation and decoding, it enables a wall switch to directly control the start / stop, speed adjustment, and forward / reverse rotation of a DC fan, as well as light switching. Specifically, different fan switch settings correspond to different diode combinations to generate specific waveform duty cycles; for example, both positive and negative half-wave duty cycles are 50%, and the full-wave duty cycle is 100%. The receiving module detects the waveform characteristics via an optocoupler and outputs a PWM signal to the fan motor driver, thereby achieving speed control. Furthermore, the fan motor driver is a DC motor driver.

[0042] In one application embodiment, the fan switch is a wall switch with built-in multi-position mechanical contacts. For example, the fan switch includes a four-position rotary switch or a segmented push-toggle switch. Specifically, the four positions of the four-position rotary switch are off, low speed, medium speed, and high speed, and it is equipped with a push-button forward / reverse switching position. Pressing the forward / reverse switching position changes the rotation direction of the fan motor only when the fan is in high speed. This invention changes the current waveform characteristics of the live wire by switching the diode array connected to the waveform generation circuit through the physical contacts of the fan switch, such as generating positive and negative half-wave rectification and full-wave conduction wall control signals. Furthermore, the forward / reverse switching switch serves as a dedicated switch for triggering short-term power-off. When the forward / reverse switching switch is pressed or toggled while the fan is running at high speed, the waveform generation circuit is powered on and off once to generate a forward / reverse switching signal. After the receiving module recognizes the short-term on / off mode switching signal, the MCU sends a reverse command, and the fan motor receives the command and responds.

[0043] In some embodiments, the receiving and decoding module of the present invention includes an optocoupler isolation detection unit and a microcontroller unit (MCU). The high-speed optocoupler samples the live wire waveform in real time, converts it into a digital signal and inputs it into the MCU. The microcontroller has a built-in pattern recognition algorithm. According to the speed regulation logic of the pattern recognition algorithm, it outputs a PWM signal to the DC fan motor driver, thereby realizing the fan speed regulation and forward / reverse rotation functions.

[0044] In one application embodiment, the logical judgment of the pattern recognition algorithm of the present invention includes: when a continuous half-wave signal is received, the fan speed is adjusted to level 1 or level 2 (corresponding to low speed and medium speed), wherein when a positive half-wave signal is received, the MCU interprets it as a higher speed, that is, when a positive half-wave is received, the fan speed is adjusted to level 2, and when a negative half-wave is received, the fan speed is adjusted to level 1; when a continuous full-wave signal is received, the fan speed is adjusted to the highest speed level 3 (corresponding to high speed); when a short on / off sequence is received, the MCU sends a reverse command to the fan motor, specifically, triggering the forward / reverse switching gear to switch power on and off once is the forward / reverse switching signal.

[0045] In one application embodiment, the system of the present invention is equipped with a wireless extension module, allowing display devices such as mobile apps to synchronously display the status of the wall-mounted switch (switch control module), such as the current speed and direction of rotation of the fan, and to perform voice control, such as receiving the voice command "AA (voice assistant name), reverse fan". Specifically, the receiving module of the present invention integrates a Wi-Fi unit.

[0046] In one application embodiment, the system of the present invention has wireless control compatibility and power-off memory function. Specifically, the priority arbitration mechanism set by the system of the present invention is as follows: the wall control signal and the wireless remote control command are set as the last operation with priority, thereby effectively avoiding conflicts. Furthermore, the receiving module supports the power-off memory function, which can save the last set operating status of the fan direction, fan speed, and lights, etc.

[0047] This invention employs a mechanical switch, eliminating the need for normally open circuits and allowing for complete power cut-off in the off state, achieving zero-power standby. Furthermore, signal encoding and decoding are achieved through a combination of diodes and optocouplers, eliminating the need for dedicated codec communication chips, effectively reducing costs and achieving high-reliability control. Moreover, users can easily perform complex controls using a rotary or push-toggle switch, following traditional mechanical switch operating habits, making operation simple and easy to master.

[0048] In one embodiment, see Figure 1The system of the present invention includes a switch control module, a receiver decoding module, and a working module. The working module includes a fan motor and a lamp, which adopts a simple wall control combined with a dual-wire electrical control method. The switch control module is used to generate a power signal waveform, which is received and decoded by the receiver decoder to control the working module.

[0049] In one application embodiment, the wall control module includes a fan switch, a waveform generation circuit, and a light switch, as well as an AC input interface for the fan (AC In L (For Fan)) and an AC input interface for the light (AC In L (For Light)). The waveform generation circuit is equipped with a first diode D. 低 Second diode D 中 And the live wire, the first diode D 低 The second diode D is used to generate low-speed signal A. 中 The fan switch is used to generate a medium-speed signal (Signal B), which, when connected to the live wire, generates a high-speed signal (Signal C) and functions as a forward and reverse switch. The fan switch has three parallel-connected speed switches, with the first diode D... 低 Second diode D 中 The three position switches are connected in parallel with the built-in live wire, and the first diode D is connected in series with each of the three position switches. 低 Second diode D 中 The AC power from the fan, after passing through the fan AC power interface, fan switch, and waveform generation circuit, generates an AC motor input signal (AC In L Motor) which is then input to the receiving and decoding module. Similarly, the AC power from the lighting system, after passing through the lighting AC power input interface and lighting switch, generates a lighting AC signal (AC In L Light) which is also input to the receiving and decoding module. The fan AC power input interface and lighting AC power input interface are each connected to an external live wire.

[0050] In one application example, see Figure 1The receiving and decoding module of this invention includes a fan signal detector, a fan motor power supply, a first microcontroller (MCU 1), and a motor controller, connected in sequence, as well as a light detector, a light power supply, a second microcontroller (MCU 2), and a light controller, also connected in sequence. The fan signal detector receives the AC input signal from the fan motor (AC In L Motor), and the light signal detector receives the AC input signal from the light (AC In L Light). The fan motor power supply is connected to the motor controller, and the light power supply is connected to the light controller. The first microcontroller (MCU 1) and the second microcontroller (MCU 2) are each connected to a receiver. It is understood that the receiver of this invention can be an optocoupler receiver, employing a high-speed optocoupler to sample the live wire waveform in real time. Furthermore, the receiving and decoding module incorporates a Wi-Fi transmitter, compatible with wireless expansion. The fan motor power supply and the light power supply are each connected to an external neutral wire.

[0051] In one application example, see Figure 1 The working module of this invention includes a fan motor and a lamp. A motor controller is connected to the fan motor. A first controller, MCU1, sends a PWM signal to the motor controller based on the received power waveform signal to control the start, stop, speed, and direction of the fan motor. A lamp controller is connected to the lamp. A second controller sends a signal to the lamp controller to control the lamp's on / off state.

[0052] In one embodiment, see Figure 2 The system of the present invention includes a switch control module, a receiver decoding module and a working module. It adopts a simple wall control combined with a single live wire electrical control method. The switch control module is used to generate power signal waveforms, which are received and decoded by the receiver decoder to control the working module.

[0053] In one application example, see Figure 2The wall control module of this invention includes a fan switch, a waveform generation circuit, a light switch, and an AC input interface (AC InL), which is connected to an external live wire. The AC power from the fan passes through the AC input interface, the fan switch, and the waveform generation circuit to generate a fan motor AC input signal (AC InL), which is then input to the receiver / decoder module. The output (out) of the receiver / decoder module controls the fan motor. Furthermore, the AC power from the light source passes through the AC input interface and the light switch to generate a light AC signal (Light out), which directly controls the light fixture. It should be noted that the structure of the fan switch and the signal waveform generation circuit, as well as their connection relationship, are the same in the simple wall control with single-live-wire control method as in the dual-live-wire control method. Furthermore, the receiver / decoder module in this embodiment can be an optocoupler receiver. Furthermore, the receiver / decoder module in this embodiment has a built-in Wi-Fi transmitter. Furthermore, the receiver and the lamp are connected to the external neutral wire respectively.

[0054] In one embodiment, see Figure 3 The system of the present invention includes a switch control module, a receiver decoding module and a working module. It adopts a simple wall control combined with a single live wire and no light control method. The switch control module is used to generate power signal waveforms, which are received and decoded by the receiver decoder to control the working module.

[0055] In one application example, see Figure 3 The wall control module of this invention includes a fan switch, a waveform generation circuit, and an AC input interface (AC In L), which is connected to an external live wire. The AC power from the fan passes through the AC input interface, the fan switch, and the waveform generation circuit to generate a fan motor AC input signal (AC In L), which is then input to the receiver / decoder module. The output of the receiver / decoder module controls the fan motor.

[0056] It should be noted that the structure of the fan switch and signal waveform generation circuit, as well as their connection relationship, in the simple wall control with single-wire control mode are the same as those in the simple wall control with dual-wire control mode. Furthermore, the receiver in this embodiment can be an optocoupler receiver. Furthermore, the receiver in this embodiment has a built-in Wi-Fi transmitter. The receiver is connected to an external neutral wire.

[0057] It is understandable that in both the simple wall-mounted control with a single live wire and the simple wall-mounted control with a single live wire and no-light control, the fan motor control portion of the receiving and decoding module is the same as in the simple wall-mounted control with a dual live wire. Specifically, in both the simple wall-mounted control with a single live wire and the simple wall-mounted control with a single live wire and no-light control, the receiving and decoding module includes a fan signal detector, a fan motor power supply, a first microcontroller, and a motor controller connected in sequence. The fan signal detector receives the AC input signal (AC In L) from the fan motor, and the fan motor power supply is connected to the motor controller. The first microcontroller is connected to the receiver, and the motor controller is connected to the fan motor.

[0058] In some embodiments, the system of the present invention includes a main control circuit for motor control and a secondary control circuit for lamp control, as well as a current amplification circuit, see [link to documentation]. Figure 4 , Figure 5 and Figure 6 The second microcontroller U2 in the main control circuit is the main MCU, and the fourth microcontroller U4 in the secondary control circuit is the secondary MCU. It can be understood that the second microcontroller U2 and the fourth microcontroller U4 can use the same control chip.

[0059] In one application example, see Figure 4 In the main control circuit of this invention, the +5V power supply is connected to the VDD5 pin of the first microcontroller U2 after passing through the fourteen-capacitor C14. The BZ pin of the first microcontroller U2 is connected to the buzzer circuit, the RF pin is connected to the radio frequency signal, and the DC_BUS pin is connected to the DC bus. The AC_MOT_N and AC_MOT_L pins of the first microcontroller U2 are connected to the negative and positive terminals of the fan motor, respectively. The OPIT, OPI+, and OPI- pins of the first microcontroller U2 are connected to the output pin, non-inverting pin, and inverting pin of the first operational amplifier, respectively. The OPOT, OPO+, and OPO- pins of the first operational amplifier are connected to the output pin, non-inverting pin, and inverting pin of the second operational amplifier, respectively. The IU pin of the first microcontroller U2 is connected to the tenth capacitor C10 and the 2 / 8 resistor R28 for filtering, and the IU pin of the first microcontroller U2 is connected to the one-to-one capacitor C11 for decoupling.

[0060] In one application example, see Figure 5 In the secondary control circuit of the present invention, the +5V power supply is connected to the VDD5 pin of the second microcontroller U4 through the first capacitor C1, the LIGHT pin of the second microcontroller U4 is connected to the lamp control signal, the AC_LED pin of the second microcontroller U4 is connected to the lamp, the RF_B pin of the second microcontroller U4 is connected to the radio frequency signal, and the DC_BUS_B pin of the second microcontroller U4 is connected to the DC bus.

[0061] In one application example, see Figure 6 The current amplification circuit of this invention includes a first operational amplifier and a second operational amplifier. The output pin of the first operational amplifier is connected to the OPIT pin of a first microcontroller U2. The non-inverting pin of the first operational amplifier is connected to a +5V power supply via a 2 / 2 resistor R22, and the inverting pin is grounded via a 2 / 7 resistor R27. The output pin of the first operational amplifier is connected to the IU pin of the first microcontroller U2 via a 2 / 7 resistor R27 and a 2 / 0 resistor R20. The output pin of the second operational amplifier is connected to the OPIT pin of the first microcontroller U2. The non-inverting pin of the second operational amplifier is connected to a +5V power supply via a 2 / 3 resistor R23, and the inverting pin is connected to the IU pin of the first microcontroller U2 via a 2 / 6 resistor R26 and a 2 / 5 resistor R25. An eighth capacitor C8 is connected between the non-inverting and inverting pins of the first operational amplifier, and a ninth capacitor C9 is connected between the non-inverting and inverting pins of the second operational amplifier.

[0062] In some embodiments, see Figure 7 The receiving and decoding module of the system of this invention includes a lighting control signal decoding circuit and a fan control signal decoding circuit. Specifically, in the lighting control signal decoding circuit, AC current L1 is connected to the anode of the first optocoupler U1, and the cathode of the first optocoupler U1 is connected to the anode of the first rectifier diode D1. AC current N is connected to the cathode of the first rectifier diode D1 after being connected in series with the first current-limiting resistor R1 and the second current-limiting resistor R2. The collector of the first optocoupler U1 is connected to the AC_LED pin of the first microcontroller U2, and is connected to the +5V power supply through the three-three resistor R33. The emitter of the first optocoupler U1 is grounded, and a one-two capacitor C12 is connected between the emitter and the collector.

[0063] Furthermore, in the fan control signal decoding circuit, AC current L2 is connected to the cathode of the second optocoupler U3 and the anode of the third optocoupler U7, respectively. The anode of the second optocoupler U3 and the cathode of the third optocoupler U7 are connected to resistor R11. AC current N is connected to the seventh resistor R7 and resistor R11 connected in series. The collector of the second optocoupler U3 is connected to the AC_MOT_L pin of the first microcontroller U2, and is connected to the +5V power supply through the fifth resistor R5. The emitter of the second optocoupler U3 is grounded, and a capacitor C21 is connected between its emitter and collector. The collector of the third optocoupler U7 is connected to the AC_MOT_N pin of the first microcontroller U2, and is connected to the +5V power supply through the sixth resistor R6. The emitter of the third optocoupler U7 is grounded, and a second capacitor C2 is connected between its emitter and collector.

[0064] In some embodiments, the system of the present invention includes a motor power circuit, see [link to relevant documentation]. Figure 8 The motor power circuit includes a power driver chip U5 for driving the motor. The UP, UN, VP, VN, WP, and WN pins of the power driver chip U5 are connected to the PWM1H, PWM1L, PWM2L, PWM2H, PWM3H, and PWM3L pins of the first microcontroller U2, respectively. The IU pin of the power driver chip U5 is connected to the IU pin of the first microcontroller U2. The IV pin of the power driver chip U5 is connected to the non-inverting input of the first operational amplifier via a two-to-one resistor R21, and the IW pin of the power driver chip U5 is connected to the non-inverting input of the second operational amplifier via a two-to-four resistor R24. The VCC pin of the power driver chip U5 is connected to a +15V power supply, the P pin of the power driver chip U5 is connected to a 310VDC power supply, and the U, V, and W pins of the power driver chip U5 are connected to the three pins of the first transformer L2, and also to the 310VDC power supply.

[0065] In some embodiments, the system of the present invention includes a motor power input circuit, see [link to relevant documentation]. Figure 9 The motor power input circuit includes a second rectifier bridge DB2. The V+ pin of the second rectifier bridge DB2 is connected to the HV power supply. The two AC pins of the second rectifier bridge DB2 are connected to the fan motor MOT_L and the AC power N, respectively. A first capacitor CX1 is connected between the two AC pins of the second rectifier bridge DB2. A second varistor RV2 is connected between the two AC pins of the second rectifier bridge DB2.

[0066] In some embodiments, the system of the present invention includes a voltage sampling circuit, see [link to relevant documentation]. Figure 10In the voltage sampling circuit, one end of the circuit consisting of a three-capacitor C13 and a three-zero resistor R30 connected in parallel is grounded, and the other end is connected to a 310VDC power supply through an eight-resistor R18 and a seven-resistor R17. The DC_BUS pin of the first microcontroller U2 is connected between the eight-resistor R18 and the three-capacitor C13.

[0067] In some embodiments, the system of the present invention includes a lamp power input circuit, see [link to relevant documentation]. Figure 11 In the lamp power input circuit, the input AC power CAN passes through the first fuse F1 and the first varistor NTC1 connected in series, then is rectified by the first rectifier bridge DB1, and filtered by the first filter capacitor CY1 and the second filter capacitor CY2 connected in series to obtain high-voltage DC power HV. The high-voltage DC power HV passes through the seventh diode D7L connected to LED+, and through the first Zener diode D9 and the second Zener diode D10 connected in parallel, then is stepped down by the first transformer T1, resulting in a secondary output of 310VDC. The secondary output 310VDC is rectified by the third rectifier bridge D3 and the fourth rectifier bridge D4, and filtered by the 1 / 8 filter capacitor C18 and the 1 / 9 filter capacitor C19 to obtain a stable +15V DC power. The stable +15V DC power is regulated by the first voltage regulator U6 to output +5V power VCC. The +5V power VCC is further filtered by the third inductor L3 and the fourth inductor L4, and by the 3 / 4 filter capacitor C34 and the 3 / 5 filter capacitor C35 to obtain a stable +5V power supply.

[0068] In some embodiments, the system of the present invention includes a lamp source control circuit, see [link to relevant documentation]. Figure 12 The lamp source control circuit includes a first transistor Q1, a second transistor Q2, and a sixth transistor Q6. The base of the second transistor Q2 is connected to the LIGHT pin of the first microcontroller U2 via a 4 / 7 resistor R47. The collector of the second transistor Q2 is connected to the +15V power supply via 4 / 8 resistors R48 and 4 / 9 resistors R49. The emitter of the second transistor Q2 is grounded. The base of the sixth transistor Q6 is connected to the +15V power supply via a 4 / 9 resistor R49. The emitter of the sixth transistor Q6 is also connected to the +15V power supply. The collector of the sixth transistor Q6 is connected to the base of the first transistor Q1 via a 5 / 0 resistor R50. The collector of the first transistor Q1 is connected to the LED- pin of the LED lamp. The emitter of the first transistor Q1 is grounded via a 3 / 2 resistor R32.

[0069] See Figures 1 to 7 The simplified control method for a fan light according to the technical solution of the present invention is applied to the simplified control system for a fan light in the embodiments of the present invention. The method includes at least the following steps:

[0070] When a continuous half-wave signal is received, the fan motor speed is adjusted to a low or medium speed. When a positive half-wave signal is received, the microcontroller interprets it as a higher speed, and the fan speed is adjusted to a medium speed when a positive half-wave is received, and to a low speed when a negative half-wave is received.

[0071] When a continuous full-wave signal is received, the fan speed is adjusted to the highest speed setting.

[0072] Upon receiving a short-time on / off pulse sequence, the microcontroller sends a reverse command to the fan motor.

[0073] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the above-described embodiments. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this disclosure, as long as they achieve the same technical effects, should be included within the scope of protection of this disclosure and fall under the protection scope of the present invention. Within the protection scope of the present invention, the technical solutions and / or implementation methods can have various modifications and variations.

Claims

1. A control system for a fan light, characterized by, The device includes a switch control module for generating various power signal waveforms and a receiving and decoding module for decoding signal waveforms. The switch control module includes a mechanical switch assembly for outputting fan motor control signals. The mechanical switch assembly includes a waveform generation circuit and a fan switch with multiple speed settings. The waveform generation circuit includes a first diode, a second diode, and a live wire. The fan switch includes low speed, medium speed, and high speed settings, as well as a forward / reverse switching setting. The low speed setting is connected to the first diode to generate a negative half-wave signal, the medium speed setting is connected to the second diode to generate a positive half-wave signal, and the high speed setting is connected to the live wire to generate a full-wave signal. When the device is in the high speed setting, the forward / reverse switching setting is triggered to generate a forward / reverse switching signal.

2. The control system of a fan lamp according to claim 1, characterized in that, When in high speed mode, the forward / reverse switching mode is triggered, generating a short power-on / off cycle to produce a sequence of on / off pulses that serve as the forward / reverse switching signal.

3. The control system for the fan light according to claim 1, characterized in that, The receiving and decoding module includes an optocoupler isolation detection unit and a microcontroller. The optocoupler isolation detection unit samples the power signal waveform and converts it into a digital signal, which is then input into the microcontroller to control the fan motor and the lights.

4. The control system for the fan light according to claim 1, characterized in that, The receiving and decoding module has a built-in wireless extension module to allow external devices to simultaneously display the status of the switch control module and to allow voice control.

5. The control system for the fan light according to claim 1, characterized in that, The switch control module also includes a light switch for outputting lighting control signals.

6. The control system for the fan light according to claim 1, characterized in that, The switch control module also includes a light switch, a fan AC power input interface, and a light AC power input interface; the fan AC power passes through the fan AC power interface, the fan switch, and the waveform generation circuit to generate a fan motor control signal, which is then input to the receiving and decoding module; The lighting control signal generated after the AC power for lighting passes through the AC power input interface for lighting and the lighting switch is input to the receiving and decoding module.

7. The control system for the fan light according to claim 6, characterized in that, The receiving and decoding module includes a receiver, and a fan signal detector, a fan motor power supply, a first microcontroller, and a motor controller connected in sequence, as well as a light detector, a light power supply, a second microcontroller, and a light controller connected in sequence; the fan signal detector is used to receive fan motor control signals, and the light signal detector is used to receive light control signals; the first microcontroller and the second microcontroller are respectively connected to the receiver; the motor controller is connected to the fan motor, and the light controller is connected to the light fixture.

8. The control system for the fan light according to claim 1, characterized in that, The switch control module also includes a light switch and an AC power input interface; the fan motor control signal generated by the AC power passing through the AC power input interface, the fan switch and the waveform generation circuit is input to the receiving and decoding module, and output after being decoded by the receiving and decoding module to control the fan motor; the light control signal generated by the AC power passing through the AC power input interface and the light switch directly controls the lamp.

9. The control system for the fan light according to claim 1, characterized in that, The switch control module also includes an AC input interface; the fan motor control signal generated after the fan AC power passes through the AC input interface, the fan switch and the waveform generation circuit is input to the receiving and decoding module, and output after being decoded by the receiving and decoding module to control the fan motor.

10. A method for controlling a fan light, characterized in that, A control system for a fan light according to any one of claims 1 to 9; the method includes the following steps: When a continuous half-wave signal is received, the fan motor speed is adjusted to a low or medium speed. When a positive half-wave signal is received, the microcontroller interprets it as a higher speed, and the fan speed is adjusted to a medium speed when a positive half-wave is received, and to a low speed when a negative half-wave is received. When a continuous full-wave signal is received, the fan speed is adjusted to the highest speed setting. Upon receiving a short-time on / off pulse sequence, the microcontroller sends a reverse command to the fan motor.

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