A multifunctional intelligent direct-current brushless ceiling fan controller

Abstract

The utility model relates to domestic appliance control technical field, specifically is multifunctional intelligent direct current brushless ceiling fan controller. It includes drive unit and control unit. Its characteristics are, drive unit contains U phase drive module, V phase drive module and W phase drive module, and the input of U phase drive module, V phase drive module and W phase drive module are all connected with power, and the output of U phase drive module is connected with the U phase of direct current brushless motor of direct current brushless ceiling fan, and the output of V phase drive module is connected with the V phase of direct current brushless motor, and the output of W phase drive module is connected with the W phase of direct current brushless motor, and control unit contains singlechip chip U3, and singlechip chip U3 is used for driving U phase drive module, V phase drive module and W phase drive module's up and down bridge conduction or close. The ceiling fan using this controller can use direct current brushless motor as power source, and the energy consumption is low, and the service life is long.

Description

Technical Field

[0001] This utility model relates to the field of household appliance control technology, specifically a multi-functional intelligent DC brushless ceiling fan controller. Background Technology

[0002] A ceiling fan is a mechanical fan installed on the ceiling. It uses electricity to drive the blades to rotate, which accelerates air circulation and is mainly used for air circulation to achieve the function of cooling and relieving heat.

[0003] Currently, ceiling fans use AC series motors as drive motors. Due to the inherent characteristics of AC series motors, traditional ceiling fans have high energy consumption and limited lifespan. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a multifunctional intelligent DC brushless ceiling fan controller. The ceiling fan using this controller can use a DC brushless motor as a power source, which has low energy consumption and long service life.

[0005] To solve the above problems, the following technical solutions are provided: This utility model discloses a multifunctional intelligent DC brushless ceiling fan controller, comprising a drive unit and a control unit. The drive unit includes a U-phase drive module, a V-phase drive module, and a W-phase drive module. The input terminals of all three modules are connected to a power supply. The output terminal of the U-phase drive module is connected to the U-phase of the DC brushless motor of the ceiling fan. The output terminal of the V-phase drive module is connected to the V-phase of the DC brushless motor, and the output terminal of the W-phase drive module is connected to the W-phase of the DC brushless motor. The control unit includes a microcontroller chip U3, which is adapted and connected to the U-phase, V-phase, and W-phase drive modules. The control unit is used to drive the upper and lower bridges of the U-phase, V-phase, and W-phase drive modules to be turned on or off.

[0006] The drive unit and the control unit are connected by a current sampling circuit. The current sampling circuit includes a sampling resistor RS1. The upper end of the sampling resistor RS1 is connected to the U-phase drive module, the V-phase drive module and the W-phase drive module respectively, and the lower end of the sampling resistor RS1 is grounded. The upper end of the sampling resistor RS1 is connected to one end of the resistor R38 and one end of the capacitor C20 respectively. The other end of the resistor R38 is connected to the microcontroller chip U3. The lower end of the sampling resistor RS1 is connected to the other end of the capacitor C20 and one end of the resistor R32 respectively. The other end of the resistor R32 is connected to the microcontroller chip U3.

[0007] It also includes a voltage acquisition circuit, which contains resistors R33 and R40. One end of resistor R33 is connected to the bus of the driving power supply, and the other end of resistor R33 is connected to the microcontroller chip U3 and one end of resistor R40, respectively. The other end of resistor R40 is grounded, and capacitor C22 is connected in parallel between the two ends of resistor R40.

[0008] The microcontroller chip U3 is adapted to connect to an infrared receiving module; the infrared receiving module includes an infrared receiver head IR1, pin 1 of the infrared receiver head IR1 is connected to one end of resistor R37 and one end of capacitor C23 respectively, the other end of resistor R37 is connected to power supply VDD, and the other end of capacitor C23 is grounded; pin 2 of the infrared receiver head IR1 is grounded, and pin 3 of the infrared receiver head IR1 is connected to one end of resistor R39, the other end of resistor R39 is connected to one end of capacitor C21 and the microcontroller chip U3 respectively, and the other end of capacitor C21 is grounded.

[0009] Pin 3 of the infrared receiver IR1 is connected to one end of resistor R35, and the other end of resistor R35 is connected to power supply VDD.

[0010] It also includes a display module, which contains a power module and an LED display module. The power module contains a regulating bridge, the input of which is connected to AC power, and the output of which is connected to the anode of the LED display module and the power chip, respectively. The output of the power chip is connected to the cathode of the LED display module.

[0011] The LED display module includes a warm-color LED display module and a white LED display module. The power chip includes power chip U1 and power chip U2. The output terminals of the rectifier bridge are connected to power chip U1 and power chip U2. The output terminal OUT1 of power chip U1 is connected to the anode of the white LED display module, and the output terminal OUT2 of power chip U2 is connected to the anode of the warm-color LED display module.

[0012] The microcontroller chip U3 is model FU6532N.

[0013] The above approach has the following advantages: The multifunctional intelligent DC brushless ceiling fan controller of this invention comprises a U-phase drive module, a V-phase drive module, and a W-phase drive module. The input terminals of all three modules are connected to a power supply. The output terminal of the U-phase drive module is connected to the U-phase of the DC brushless motor of the ceiling fan. The output terminal of the V-phase drive module is connected to the V-phase of the DC brushless motor, and the output terminal of the W-phase drive module is connected to the W-phase of the DC brushless motor. The control unit contains a microcontroller chip U3, which is adapted and connected to the U-phase, V-phase, and W-phase drive modules. The control unit is used to turn the upper and lower bridges of the U-phase, V-phase, and W-phase drive modules on or off. This controller can drive the DC brushless motor through the UVW three-phase drive module, thus replacing the traditional AC series motor with a DC brushless motor, reducing energy consumption and extending service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the principle topology of the multifunctional intelligent DC brushless ceiling fan controller of this utility model; Figure 2 This is a circuit diagram of the drive unit in the multifunctional intelligent DC brushless ceiling fan controller of this utility model; Figure 3 This is a schematic diagram of the current sampling circuit in the multifunctional intelligent DC brushless ceiling fan controller of this utility model; Figure 4 This is a schematic diagram of the voltage acquisition circuit in the multifunctional intelligent DC brushless ceiling fan controller of this utility model; Figure 5 This is a schematic diagram of the infrared receiving module in the multifunctional intelligent DC brushless ceiling fan controller of this utility model; Figure 6 This is a circuit diagram of the power supply module in the multifunctional intelligent DC brushless ceiling fan controller of this utility model; Figure 7 This is a circuit diagram of the LED display module in the multifunctional intelligent DC brushless ceiling fan controller of this utility model; Figure 8 This is the circuit diagram of the microcontroller chip U3 in the multifunctional intelligent DC brushless ceiling fan controller of this utility model. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1As shown, the multifunctional intelligent DC brushless ceiling fan controller of this utility model includes a drive unit, a control unit, a current sampling circuit, a voltage acquisition circuit, and a display module. The input terminal of the drive unit is connected to the drive power supply, and the output terminal of the drive unit is connected to the DC brushless motor. The voltage acquisition circuit is located between the control unit and the drive power supply, and the current sampling circuit is located between the drive unit and the control unit. The control unit drives the DC brushless motor through the drive unit. The voltage acquisition circuit is used to collect the voltage of the drive power supply and send the voltage information to the control unit. The current sampling circuit is used to collect the output current of the drive unit and transmit the output current information to the control unit.

[0017] like Figure 8 The control unit contains a microcontroller chip U3 of model FU6532N. The microcontroller chip U3 is connected to peripheral circuitry for driving its operation, as shown in the following structure. Figure 8 As shown, this is existing technology and will not be elaborated further. Specifically, pin 8 of the microcontroller chip U3 is connected to 5V, pin 0 is connected to ground, and pins 16, 17, 18, 19, 20, and 21 are motor drive pins used to control the rotation of the brushless DC motor. Pin 2 is the ADC pin, which can acquire the bus voltage in real time. Pins 5 and 6 are operational amplifier input ports. Pin 7 is the Vhalf port, and pin 8 is the ADC pin, which can acquire current in real time. Pin 9 is the ADC reference voltage output pin. Pins 11 and 14 are PWM output pins, which can realize digital dimming function. Pin 15 is the PWM capture pin, which can decode infrared remote control signals. C1, C8, C16, C9, and C18 are filter capacitors.

[0018] The drive unit contains a U-phase drive module, a V-phase drive module, and a W-phase drive module. The input terminals of all three modules are connected to the power supply. The output terminal of the U-phase drive module is connected to the U-phase of the brushless DC motor of the brushless DC ceiling fan. The output terminal of the V-phase drive module is connected to the V-phase of the brushless DC motor, and the output terminal of the W-phase drive module is connected to the W-phase of the brushless DC motor. The microcontroller chip U3 is adapted to connect to the U-phase, V-phase, and W-phase drive modules. The specific connection pins are as follows: Figure 8 and Figure 2 As shown. The microcontroller chip U3 is used to drive the upper and lower bridges of the U-phase drive module, V-phase drive module, and W-phase drive module to turn on or off, thereby driving the brushless DC motor to rotate.

[0019] like Figure 2As shown, in this embodiment, the U-phase drive module, V-phase drive module, and W-phase drive module are MOS chips U4, U5, and U6, respectively. Pin 3 of U4, U5, and U6 is connected to the positive terminal of the power supply. Pins 5, 6, 7, and 8 of MOS chips U4, U5, and U6 are connected to the three phases of the direct brushless motor, respectively. R25 and R26 are the gate resistors of the U-phase drive module, one end of which is connected to pins 16 and 17 of the microcontroller chip U3, and the other end is connected to pins 4 and 2 of U4; R50 and R51 are the gate resistors of the V-phase drive module, one end of which is connected to pins 18 and 19 of the microcontroller chip U3, and the other end is connected to pins 4 and 2 of U5; R52 and R53 are the gate resistors of the W-phase drive module, one end of which is connected to pins 20 and 21 of the microcontroller chip U3, and the other end is connected to pins 4 and 2 of U6; the microcontroller chip U3 drives the six outputs through R25, R26, R50, R51, R52 and R53 to control the opening and closing of the three-phase upper and lower bridges, thereby controlling the operation of the brushless DC motor.

[0020] like Figure 2 , Figure 3 and Figure 8 As shown, the current sampling circuit includes a sampling resistor RS1. The upper end of the sampling resistor RS1 is connected to the U-phase drive module, the V-phase drive module, and the W-phase drive module respectively, and the lower end of the sampling resistor RS1 is grounded. The upper end of the sampling resistor RS1 is connected to one end of resistor R38 and one end of capacitor C20 respectively, and the other end of resistor R38 is connected to the microcontroller chip U3. The lower end of the sampling resistor RS1 is connected to the other end of capacitor C20 and one end of resistor R32 respectively, and the other end of resistor R32 is connected to the microcontroller chip U3.

[0021] Specifically, one end of RS1 is connected to pin 1 of U4, U5, and U6, and the other end is connected to ground. R32 and R38 are current-limiting resistors, with one end connected to both ends of RS1 respectively, and the other end connected to pins 5 and 6 of the microcontroller's built-in op-amp. C20 is a filter capacitor, which can effectively filter out voltage spikes; one end is connected to R32, and the other end is connected to R38. The microcontroller's internal op-amp output port can output analog voltage to pin 8 of the microcontroller. The microcontroller's internal RC filter collects the voltage through the microcontroller's ADC channel and then calculates the current value, which can be used for speed calculation. The speed closed loop is controlled by current.

[0022] like Figure 4 As shown, the voltage acquisition circuit contains resistors R33 and R40. One end of resistor R33 is connected to the bus of the drive power supply, and the other end of resistor R33 is connected to the microcontroller chip U3 and one end of resistor R40 respectively. The other end of resistor R40 is grounded, and capacitor C22 is connected in parallel between the two ends of resistor R40.

[0023] Specifically, one end of R33 is connected to 24V, one end of R40 is connected to reference ground, and the other end, together with R33, is connected to pin 2 of the microcontroller. Pin 2 of U3 is the ADC voltage acquisition pin. C22 is a filter capacitor, which can effectively filter out voltage glitches. R33 and R40 are bus voltage divider resistors, which can input the bus voltage to the microcontroller's ADC channel for voltage acquisition through voltage division, thereby providing voltage protection to prevent overvoltage from burning out the device.

[0024] The infrared receiver module includes an infrared receiver head IR1. Pin 1 of IR1 is connected to one end of resistor R37 and one end of capacitor C23. The other end of resistor R37 is connected to the power supply VDD, and the other end of capacitor C23 is grounded. Pin 2 of IR1 is grounded. Pin 3 of IR1 is connected to one end of resistor R39. The other end of resistor R39 is connected to one end of capacitor C21 and the microcontroller chip U3. The other end of capacitor C21 is grounded. Pin 3 of IR1 is connected to one end of resistor R35. The other end of resistor R35 is connected to the power supply VDD.

[0025] Specifically, IR1 is the infrared receiver head, pin 1 is the power input, supplying power to IR1, and pin 2 is the power ground input. Pin 3 is for infrared signal conversion. Resistor R37 is a current-limiting resistor, one end connected to 5V and the other end connected to pin 1 of IR1. C23 is a filter capacitor, used to stabilize the voltage, one end connected to pin 1 of IR1 and the other end connected to power ground. R35 is a signal pull-up resistor, one end connected to 5V and the other end connected to pin 3 of IR1. R39 and C21 form an RC filter circuit, one end of R39 connected to pin 3 of IR1 and the other end connected to pin 15 of U3 for PWM timer capture.

[0026] The display module includes a power supply module and an LED display module. The power supply module contains a regulating bridge, whose input is connected to AC power. The output of the regulating bridge is connected to the anode of the LED display module and the power chip, respectively. The output of the power chip is connected to the cathode of the LED display module. The LED display module includes a warm-color LED display module and a white LED display module. The power chip includes power chip U1 and power chip U2. The outputs of the regulating bridge are connected to both power chips U1 and U2. The output terminal OUT1 of power chip U1 is connected to the anode of the white LED display module, and the output terminal OUT2 of power chip U2 is connected to the anode of the warm-color LED display module.

[0027] In this embodiment, the display module is as follows: Figure 6 and Figure 7As shown, L and N are AC input terminals. DB1 is a rectifier bridge that rectifies the AC power to output DC power. DC+ and DC- are AC inputs, connected to L and N respectively. AC1 and AC2 are DC outputs. EC1 is an electrolytic capacitor, connected to AC1 at one end and AC2 at the other, effectively reducing ripple. U1 and U2 are high-voltage linear dimming LED driver chips. Pin 1 is the chip power supply port, pin 3 is the chip ground port, pin 4 is the digital dimming port, pin 5 is the chip sampling port, and pin 8 is the chip-LED interface. Resistors R1 and R2 are current-limiting resistors, connected to AC2 at one end and to pin 1 of chips U1 and U2 at the other end. Pin 3 of U1 and U2 is connected to ground, and pin 4 is connected to pins 11 and 14 of the microcontroller. RS5 and RS2 are sampling resistors connected in parallel, connected to pin 5 of chip U1 at one end and to ground at the other end. RS3 and RS4 are sampling resistors connected in parallel, with one end connected to pin 5 of chip U2 and the other end connected to ground. Pins 8 of U1 and U2 are output terminals, each connected to 80 LED beads. LEDs 1 to 80 are white LED beads, and LEDs 81 to 160 are warm-colored LED beads. Different colors can be combined. The LED beads are connected in series, with the starting point connected to AC2 and the ending point connected to pin 8 of the chip.

[0028] This invention can use a DC brushless motor to fundamentally solve the energy consumption problem. The microcontroller chip can be used with a remote control to perform a variety of customized functions, such as customized speed settings, customized timer settings, customized smart sleep mode, customized smart lighting settings, and customized circuit and motor protection functions.

Claims

1. A multifunctional intelligent DC brushless ceiling fan controller, comprising a drive unit and a control unit; characterized in that, The drive unit includes a U-phase drive module, a V-phase drive module, and a W-phase drive module. The input terminals of the U-phase drive module, V-phase drive module, and W-phase drive module are all connected to the drive power supply. The output terminal of the U-phase drive module is connected to the U-phase of the brushless DC motor of the brushless DC ceiling fan. The output terminal of the V-phase drive module is connected to the V-phase of the brushless DC motor. The output terminal of the W-phase drive module is connected to the W-phase of the brushless DC motor. The control unit includes a microcontroller chip U3, which is adapted and connected to the U-phase drive module, V-phase drive module, and W-phase drive module. The control unit is used to drive the upper and lower bridges of the U-phase drive module, V-phase drive module, and W-phase drive module to be turned on or off.

2. The multifunctional intelligent DC brushless ceiling fan controller as described in claim 1, characterized in that, A current sampling circuit is adapted to connect the drive unit and the control unit. The current sampling circuit includes a sampling resistor RS1. The upper end of the sampling resistor RS1 is adapted to connect to the U-phase drive module, the V-phase drive module, and the W-phase drive module, respectively, and the lower end of the sampling resistor RS1 is grounded. The upper end of the sampling resistor RS1 is connected to one end of the resistor R38 and one end of the capacitor C20, respectively. The other end of the resistor R38 is connected to the microcontroller chip U3. The lower end of the sampling resistor RS1 is connected to the other end of the capacitor C20 and one end of the resistor R32, respectively. The other end of the resistor R32 is connected to the microcontroller chip U3.

3. The multifunctional intelligent DC brushless ceiling fan controller as described in claim 1, characterized in that, It also includes a voltage acquisition circuit, which contains resistors R33 and R40. One end of resistor R33 is connected to the bus of the driving power supply, and the other end of resistor R33 is connected to the microcontroller chip U3 and one end of resistor R40, respectively. The other end of resistor R40 is grounded, and capacitor C22 is connected in parallel between the two ends of resistor R40.

4. The multifunctional intelligent DC brushless ceiling fan controller as described in claim 1, characterized in that, The microcontroller chip U3 is adapted to connect to an infrared receiving module; the infrared receiving module includes an infrared receiver head IR1, pin 1 of the infrared receiver head IR1 is connected to one end of resistor R37 and one end of capacitor C23 respectively, the other end of resistor R37 is connected to power supply VDD, and the other end of capacitor C23 is grounded; pin 2 of the infrared receiver head IR1 is grounded, and pin 3 of the infrared receiver head IR1 is connected to one end of resistor R39, the other end of resistor R39 is connected to one end of capacitor C21 and the microcontroller chip U3 respectively, and the other end of capacitor C21 is grounded.

5. The multifunctional intelligent DC brushless ceiling fan controller as described in claim 4, characterized in that, Pin 3 of the infrared receiver IR1 is connected to one end of resistor R35, and the other end of resistor R35 is connected to power supply VDD.

6. The multifunctional intelligent DC brushless ceiling fan controller as described in claim 1, characterized in that, It also includes a display module, which contains a power module and an LED display module. The power module contains a regulating bridge, the input of which is connected to AC power, and the output of which is connected to the anode of the LED display module and the power chip, respectively. The output of the power chip is connected to the cathode of the LED display module.

7. The multifunctional intelligent DC brushless ceiling fan controller as described in claim 6, characterized in that, The LED display module includes a warm-color LED display module and a white LED display module. The power chip includes power chip U1 and power chip U2. The output terminals of the rectifier bridge are connected to power chip U1 and power chip U2. The output terminal OUT1 of power chip U1 is connected to the anode of the white LED display module, and the output terminal OUT2 of power chip U2 is connected to the anode of the warm-color LED display module.

8. The multifunctional intelligent DC brushless ceiling fan controller as described in claim 1, characterized in that, The microcontroller chip U3 is model FU6532N.

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