Retro inhaul cable fan control circuit and inhaul cable fan

Abstract

The utility model relates to the technical field of electronic circuits, and discloses a retro inhaul cable fan control circuit and an inhaul cable fan. The retro inhaul cable fan control circuit comprises an inhaul cable switch module, a control module, a motor driving module and an LED driving module; the control module is connected with the inhaul cable switch module, the motor driving module and the LED driving module. The control module receives a first switching value signal and a second switching value signal input by the inhaul cable switch module, correspondingly generates a first control signal to the motor driving module and generates a second control signal to the LED driving module; the motor driving module controls starting, stopping and the rotating speed of a fan motor through the first control signal; and the LED driving module controls the color temperature and the brightness of the fan lamp through the second control signal. The three-phase driving voltage which can be borne by the human body and is lower than the preset voltage value and the LED driving voltage are set, so that the safety and the reliability of the product are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electronic circuits, in particular to a retro cord fan control circuit and a cord fan. BACKGROUND

[0002] A household ceiling fan lamp integrates a fan and a lighting lamp, is hung on a ceiling, and has a decorative effect in addition to ventilation and lighting effects. The appearance of the ceiling fan lamp is designed in various styles, and a retro style design uses a cord switch for control. Usually, two cord switches are used to control the fan and the lighting lamp, respectively.

[0003] A fan motor is gradually replaced by a DC brushless motor from an original AC motor, and then evolves from a high-voltage DC brushless motor to a low-voltage DC brushless motor. A fan lighting lamp is gradually changed from an original AC lamp to a current DC LED lamp, and the opening and closing of the lamp are controlled by a cord switch. A current fan lamp controller controlled by a retro cord switch is mostly a high-voltage DC brushless motor, and the high-voltage DC motor has high requirements for production technology and insulation level of parts, low safety, and high production cost. A current fan lighting lamp is mostly directly connected to an AC input power source through a cord switch, and is limited by the function of the cord switch, so that only the opening and closing of the lighting lamp can be controlled, and the function is relatively simple. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a retro cord fan control circuit and a cord fan, and aims to solve the technical problem of low safety of the retro cord fan.

[0005] To achieve the above-mentioned purpose, the application provides a retro cord fan control circuit, which comprises a cord switch module, a control module, a motor driving module and an LED driving module.

[0006] The control module is connected with the cord switch module, the motor driving module and the LED driving module, respectively.

[0007] The control module is used for receiving a first switching quantity signal input by the cord switch module, generating a first control signal corresponding to the first switching quantity signal, and outputting the first control signal to the motor driving module.

[0008] The motor driving module is used for outputting a three-phase driving voltage with a voltage value lower than a preset voltage value to a fan motor through the first control signal.

[0009] The control module is also used for receiving a second switching quantity signal input by the cord switch module, generating a second control signal corresponding to the second switching quantity signal, and outputting the second control signal to the LED driving module.

[0010] The LED driving module is configured to output an LED driving voltage with a voltage value lower than a preset voltage value to the fan lamp through the second control signal.

[0011] In an embodiment, the cable switch module comprises a fan cable switch and a lamp cable switch.

[0012] The control module is further connected to the fan cable switch and the lamp cable switch respectively.

[0013] The fan cable switch is configured to output a first on-off signal to the control module.

[0014] The lamp cable switch is configured to output a second on-off signal to the control module.

[0015] In an embodiment, the motor driving module comprises a first MOS tube to a sixth MOS tube.

[0016] The source of the first MOS tube is connected to an external power source, the gate of the first MOS tube is connected to a first end of the control module, and the drain of the first MOS tube is connected to the drain of the fourth MOS tube and a first end of the fan motor.

[0017] The source of the second MOS tube is connected to the external power source, the gate of the second MOS tube is connected to a second end of the control module, and the drain of the second MOS tube is connected to the drain of the fifth MOS tube and a second end of the fan motor.

[0018] The source of the third MOS tube is connected to the external power source, the gate of the third MOS tube is connected to a third end of the control module, and the drain of the third MOS tube is connected to the drain of the sixth MOS tube and a third end of the fan motor.

[0019] The source of the fourth MOS tube is grounded, the gate of the fourth MOS tube is connected to a fourth end of the control module, and the drain of the fourth MOS tube is further connected to the first end of the fan motor.

[0020] The source of the fifth MOS tube is grounded, the gate of the fifth MOS tube is connected to a fifth end of the control module, and the drain of the fifth MOS tube is further connected to the second end of the fan motor.

[0021] The source of the sixth MOS tube is grounded, the gate of the sixth MOS tube is connected to a sixth end of the control module, and the drain of the sixth MOS tube is further connected to the third end of the fan motor.

[0022] In an embodiment, the fan motor is a low-voltage three-phase direct-current brushless motor.

[0023] In an embodiment, the LED driving module comprises a seventh MOS tube and an eighth MOS tube;

[0024] The source of the seventh MOS tube is grounded, the drain of the seventh MOS tube is connected to the first end of the fan lamp, and the gate of the seventh MOS tube is connected to the seventh end of the control module.

[0025] The source of the eighth MOS tube is grounded, the drain of the eighth MOS tube is connected to the second end of the fan lamp, and the gate of the eighth MOS tube is connected to the eighth end of the control module.

[0026] In an embodiment, the fan lamp is a low-voltage LED lamp.

[0027] In an embodiment, the retro-Raso fan control circuit further comprises a toggle switch.

[0028] The toggle switch is connected to the I / O pin of the control module.

[0029] The toggle switch is used to send forward rotation control commands and reverse rotation control commands to the control module to control the forward rotation and reverse rotation of the fan motor.

[0030] In an embodiment, the retro-Raso fan control circuit further comprises an isolation switch power supply.

[0031] The isolation switch power supply is connected to the control module, the motor driving module, and the LED driving module.

[0032] The isolation switch power supply is used to reduce the external output voltage to a preset safe voltage.

[0033] In an embodiment, the retro-Raso fan control circuit further comprises a buzzer.

[0034] The buzzer is connected to the control module.

[0035] The buzzer is used to perform fault alarm according to the command action of the control module.

[0036] In addition, to achieve the above-mentioned purpose, the application also provides a Raso fan, which comprises the retro-Raso fan control circuit as described above.

[0037] The application provides a retro-Raso fan control circuit, which comprises a Raso switch module, a control module, a motor driving module, and an LED driving module. The control module is connected to the Raso switch module, the motor driving module, and the LED driving module, respectively.

[0038] The control module is configured to receive the first switch signal input by the cable switch module, generate a first control signal corresponding to the first switch signal, and output the first control signal to the motor drive module; the motor drive module is configured to control the start-stop and rotation speed of the fan motor through the first control signal; the control module is further configured to receive the second switch signal input by the cable switch module, generate a second control signal corresponding to the second switch signal, and output the second control signal to the LED drive module; and the LED drive module is configured to control the color temperature and brightness of the fan lamp through the second control signal. The fan motor and the fan lamp are combined together in the application, and a safe voltage component that can be borne by a human body is adopted, product functions are added, and the safety and reliability of the product are improved. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 A module schematic diagram of a first embodiment of the retro cable fan control circuit proposed in the application is shown in the figure.

[0040] Figure 2 A first circuit connection diagram of a second embodiment of the retro cable fan control circuit proposed in the application is shown in the figure.

[0041] Figure 3 A second circuit connection diagram of the second embodiment of the retro cable fan control circuit proposed in the application is shown in the figure.

[0042] Figure 4 A module schematic diagram of a third embodiment of the retro cable fan control circuit proposed in the application is shown in the figure.

[0043] DETAILED DESCRIPTION

[0044] Reference Name Reference Name 100 Cable switch module 110 Fan cable switch 200 Control module 120 Lamp cable switch 300 Motor drive module Q1-Q8 First to eighth MOS tube 400 LED drive module 800 Fan motor 500 Toggle switch 900 Fan lamp 600 Isolation switch power supply 700 Buzzer DETAILED DESCRIPTION

[0045] It should be understood that the specific embodiments described herein merely serve to explain the application and are not intended to limit the application.

[0046] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, but not all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the application.

[0047] It should be noted that all the direction indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the direction indications will also change accordingly.

[0048] In addition, the descriptions involving "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of a person skilled in the art, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0049] Referring to Figure 1 , Figure 1 The module schematic diagram of the first embodiment of the retro pulley fan control circuit proposed in the present application is based on Figure 1 The first embodiment of the retro pulley fan control circuit proposed in the present application is provided.

[0050] The retro pulley fan control circuit comprises a pulley switch module 100, a control module 200, a motor driving module 300 and an LED driving module 400.

[0051] The control module 200 is connected with the pulley switch module 100, the motor driving module 300 and the LED driving module 400 respectively.

[0052] It should be understood that the pulley switch module 100 is the input part of the whole control circuit. The user operates the pulley switch, which generates a first switching quantity signal and a second switching quantity signal. The traditional operation mode of the pulley switch provides a retro operation experience for fan control.

[0053] It should be noted that the control module 200 is an MCU, and the control module 200 is the core control part of the circuit, which is connected with the pulley switch module 100, the motor driving module 300 and the LED driving module 400. Its main function is to receive the first switching quantity signal and the second switching quantity signal transmitted by the pulley switch module 100. The switching quantity signal is a discrete signal, which has only two states, such as on and off or high level and low level.

[0054] The control module 200 is configured to receive the first switch signal input by the cable switch module 100, generate a first control signal corresponding to the first switch signal, and output the first control signal to the motor drive module 300.

[0055] It should be understood that the control module 200 will perform corresponding processing according to the received switch signal. It will generate a first control signal corresponding to the first control signal sent to the motor drive module 300, which is specifically used to control the fan motor 800.

[0056] The motor drive module 300 is configured to output three-phase drive voltages with voltage values lower than a preset voltage value to the fan motor 800 through the first control signal.

[0057] It should be understood that according to the first control signal, the circuit inside the motor drive module 300 adjusts and converts the input voltage to generate three-phase drive voltages. These voltages are output to the fan motor 800 after being processed by power amplification and the like. The motor drive module 300 ensures that the output three-phase drive voltages are lower than the preset voltage value through internal control algorithms and circuit design. The preset voltage value is a safe voltage of DC 36V that can be withstood by the human body.

[0058] It should be noted that after receiving the first control signal from the control module 200, the motor drive module 300 can control the fan motor 800. This control includes starting and stopping the fan motor 800, that is, determining whether the fan is running. In addition, it can also control the speed of the fan motor 800. By adjusting the speed of the motor, different fan output can be achieved to meet the user's demand for wind volume in different environments.

[0059] The control module 200 is also configured to receive the second switch signal input by the cable switch module 100, generate a second control signal corresponding to the second switch signal, and output the second control signal to the LED drive module 400.

[0060] It should be understood that the control module 200 will also generate a second control signal sent to the LED drive module 400, which is used to control the fan lamp 900.

[0061] The LED drive module 400 is configured to output LED drive voltages with voltage values lower than a preset voltage value to the fan lamp 900 through the second control signal.

[0062] It should be understood that the LED driving module 400 is responsible for controlling the fan lamp 900 after receiving the second control signal transmitted by the control module 200. The specific control content includes the color temperature of the fan lamp 900, and the adjustment of the color temperature can make the light present different color effects, such as cold white, warm yellow, etc. The brightness of the fan lamp 900 can also be controlled, and the user can adjust the brightness of the light according to the actual needs, for example, a dim light may be needed at night, and a bright light may be needed during the day if the fan lamp 900 is used as auxiliary lighting. The preset voltage value is a safe voltage of DC 36V that the human body can withstand.

[0063] The embodiment provides a control circuit for a retro lasso fan, which comprises a lasso switch module 100, a control module 200, a motor driving module 300 and an LED driving module 400. The control module 200 is connected to the lasso switch module 100, the motor driving module 300 and the LED driving module 400 respectively. The control module 200 is configured to receive a first switch signal input by the lasso switch module 100, generate a first control signal corresponding to the first switch signal, and output the first control signal to the motor driving module 300. The motor driving module 300 is configured to control the start-stop and rotating speed of a fan motor 800 through the first control signal. The control module 200 is further configured to receive a second switch signal input by the lasso switch module 100, generate a second control signal corresponding to the second switch signal, and output the second control signal to the LED driving module 400. The LED driving module 400 is configured to control the color temperature and brightness of a fan lamp 900 through the second control signal. The fan motor 800 and the fan lamp 900 are combined together, and components with a safe voltage (less than or equal to DC 36V) that the human body can withstand are used, so that the product function is added, and the safety and reliability of the product are improved.

[0064] Reference Figure 2 and Figure 3 , Figure 2 The first circuit connection diagram of the second embodiment of the control circuit for the retro lasso fan is provided. Figure 3 The second circuit connection diagram of the second embodiment of the control circuit for the retro lasso fan is provided. The second embodiment of the control circuit for the retro lasso fan is provided based on the first embodiment of the control circuit for the retro lasso fan.

[0065] The lasso switch module 100 comprises a fan lasso switch 110 and a lamp lasso switch 120.

[0066] The control module 200 is further connected to the fan lasso switch 110 and the lamp lasso switch 120 respectively.

[0067] It should be noted that the control module 200 is connected with the fan cable switch 110 and the lamp cable switch 120 respectively. This connection is the basis of the control function, through this connection, the control module 200 can receive signals from the cable switch, and possibly according to these signals to control the relevant equipment (fan and lamp) or make corresponding response.

[0068] The fan cable switch 110 is configured to output a first switching quantity signal to the control module 200.

[0069] It should be noted that the fan cable switch 110 is configured to output a first switching quantity signal to the control module 200. The first switching quantity signal is an electrical signal representing the state of the fan cable switch 110 (for example, on or off). When the user operates the fan cable switch 110, it will send this signal representing the state of the switch to the control module 200, so that the control module 200 knows the state of the fan cable switch 110 and subsequent processing.

[0070] The lamp cable switch 120 is configured to output a second switching quantity signal to the control module 200.

[0071] It should be noted that the lamp cable switch 120 is configured to output a second switching quantity signal to the control module 200. Similarly, the second switching quantity signal is an electrical signal representing the state of the lamp cable switch 120. When the lamp cable switch 120 is operated, this signal will be transmitted to the control module 200, so that the control module 200 can make operations such as controlling the on-off of the lamp according to the state of the lamp cable switch 120.

[0072] The motor drive module 300 includes a first MOS tube Q1 to a sixth MOS tube Q6.

[0073] It should be understood that the source of the first MOS Q1 is connected to an external power supply, the gate of the first MOS Q1 is connected to the first end of the control module 200, the drain of the first MOS Q1 is connected to the drain of the fourth MOS Q4 and the first end of the fan motor 800; the source of the second MOS is connected to the external power supply, the gate of the second MOS Q2 is connected to the second end of the control module 200, the drain of the second MOS Q2 is connected to the drain of the fifth MOS Q5 and the second end of the fan motor 800; the source of the third MOS Q3 is connected to the external power supply, the gate of the third MOS Q3 is connected to the third end of the control module 200, the drain of the third MOS Q3 is connected to the drain of the sixth MOS Q6 and the third end of the fan motor 800; the source of the fourth MOS Q4 is grounded, the gate of the fourth MOS Q4 is connected to the fourth end of the control module 200, and the drain of the fourth MOS Q4 is also connected to the first end of the fan motor 800; the source of the fifth MOS Q5 is grounded, the gate of the fifth MOS Q5 is connected to the fifth end of the control module 200, and the drain of the fifth MOS Q5 is also connected to the second end of the fan motor 800; the source of the sixth MOS Q6 is grounded, the gate of the sixth MOS Q6 is connected to the sixth end of the control module 200, and the drain of the sixth MOS Q6 is also connected to the third end of the fan motor 800.

[0074] It should be noted that the first MOS Q1 to the third MOS Q3 are NMOS tubes, and the fourth to the sixth MOS Q6 are PMOS tubes.

[0075] It should be understood that the fan motor 800 is a low-voltage three-phase DC brushless motor, which refers to a DC36V less than a DC brushless motor.

[0076] The LED drive module 400 includes a seventh MOS Q7 and an eighth MOS Q8.

[0077] It should be noted that the source of the seventh MOS Q7 is grounded, the drain of the seventh MOS Q7 is connected to the first end of the fan lamp 900, and the gate of the seventh MOS Q7 is connected to the seventh end of the control module 200; the source of the eighth MOS Q8 is grounded, the drain of the eighth MOS Q8 is connected to the second end of the fan lamp 900, and the gate of the eighth MOS Q8 is connected to the eighth end of the control module 200.

[0078] It should be understood that the fan lamp 900 is a low-voltage LED lamp, which is a low-voltage component less than or equal to a DC36V safe voltage.

[0079] It should be noted that the fan lamp 900 can be divided into LED A and LED B, which are LED lamp groups of different color temperatures. The lighting and extinguishing of LED A and LED B are realized by controlling the conduction and cut-off of the seventh MOS tube Q7 and the eighth MOS tube Q8. The brightness of the LED lamp is adjusted by adjusting the duty cycle of the LED PWM control signal connected with the MCU.

[0080] In the embodiment, the retro raso fan control circuit integrates the fan motor 800 and the fan lamp 900 together. The fan motor 800 and the fan lamp 900 adopt low-voltage components that are not greater than DC 36V (less than or equal to DC 36V) safe voltage, thereby reducing the insulation requirement of the motor to improve the safety, reliability and production cost of the product. In addition, since the driving of the LED lamp is controlled by the MCU, the low-voltage LED lamp of multiple color temperatures is assembled. The MCU is connected with the on-off quantity. The output of the LED lamp can be adjusted in brightness and color temperature by the state change and holding time of the on-off quantity, thereby increasing the product function.

[0081] Referring to Figure 4 , Figure 4 The module schematic diagram of the third embodiment of the retro raso fan control circuit proposed in the present application is shown in FIG. 6. The third embodiment of the retro raso fan control circuit is proposed based on the first embodiment and the second embodiment of the retro raso fan control circuit described above.

[0082] The retro raso fan control circuit further comprises a toggle switch 500.

[0083] The toggle switch 500 is connected to the I / O pin of the control module 200.

[0084] It should be understood that the toggle switch 500 is connected to the I / O (input / output) pin of the control module 200. This connection enables the toggle switch 500 to interact with the control module 200 in signals. The I / O pin is an interface of the control module 200 for receiving external signals (such as the control command of the toggle switch 500) and sending control signals externally (such as controlling the operation of the fan motor 800).

[0085] The toggle switch 500 is configured to send the forward rotation control command and the reverse rotation control command to the control module 200, so that the control module 200 performs the forward rotation control and the reverse rotation control of the fan motor 800.

[0086] It should be noted that in the entire retro raso fan control circuit, the toggle switch 500 plays a key role in sending control commands. It is an interactive interface between the user operation and the control module 200. Through this switch, the user can convey the requirement for the operation direction of the fan motor 800 to the control module 200.

[0087] It should be understood that when the user operates the toggle switch 500 to a certain position (for example, upwardly toggling or a certain set "forward rotation" gear), the toggle switch 500 will send a forward rotation control command to the control module 200. This command is transmitted in the form of an electrical signal through the connected I / O pin to the control module 200. After the control module 200 receives the forward rotation control command, it will perform forward rotation control operation on the fan motor 800 according to the internal program and circuit design. This may involve operations such as power supply control and phase sequence control of the motor, so that the fan motor 800 rotates in the clockwise direction (assuming that the forward rotation is in the clockwise direction).

[0088] It should be noted that, similarly, when the user operates the toggle switch 500 to the reverse rotation operation position corresponding to the forward rotation (for example, downwardly toggling or the "reverse rotation" gear), the toggle switch 500 will send a reverse rotation control command to the control module 200. After the control module 200 receives the reverse rotation control command, it will adjust the control strategy for the fan motor 800, so that the fan motor 800 rotates in the counterclockwise direction (opposite to the forward rotation direction). In this way, through the simple operation of the toggle switch 500, the forward rotation and reverse rotation control of the fan motor 800 can be easily realized, meeting different use requirements, such as changing the direction of air flow, etc.

[0089] The control circuit of the retro pulley fan further comprises an isolating switch power supply 600.

[0090] The isolating switch power supply 600 is connected to the control module 200, the motor drive module 300 and the LED drive module 400.

[0091] It should be noted that the isolating switch power supply 600 is connected to the control module 200. The control module 200 plays a core control role in the retro pulley fan control circuit, and it needs a stable power supply. The isolating switch power supply 600 provides a suitable voltage for it to ensure that the control module 200 can work normally, such as accurately receiving the signal of the pulley operation, controlling the running speed, direction of the fan and the state of the LED light according to the preset logic, etc. The motor drive module 300 is responsible for driving the fan motor 800 to run. The isolating switch power supply 600 is connected to the motor drive module 300 to provide energy. Since the motor has requirements for the stability and safety of the power supply during operation, the isolating switch power supply 600 provides a preset safe voltage to the motor drive module 300 after reducing the external voltage, which can avoid damage to the motor caused by excessive voltage, and also meet the power requirements of the normal operation of the motor, to ensure that the fan motor 800 runs stably according to the instructions of the control module 200. The LED drive module 400 is a module for controlling the LED light that may exist on the fan. The isolating switch power supply 600 is connected to the LED drive module 400 to provide power support. The external voltage is reduced to a preset safe voltage and supplied to the LED drive module 400, which helps to protect the LED light, because the LED light usually has a specific working voltage range, and the appropriate safe voltage can ensure the normal lighting of the LED light, and different lighting effects such as brightness adjustment, flashing mode can be achieved according to the settings of the control module 200.

[0092] The isolating switch power supply 600 is configured to reduce the external output voltage to a preset safe voltage.

[0093] It should be understood that the external output voltage mentioned here is the voltage from an external power source (such as mains electricity, etc.). The voltage of the external power source is often high and may have instability factors, which is not suitable for direct use in various modules in the fan control circuit. An important function of the isolating switch power supply 600 is to reduce the external output voltage to a preset safe voltage. The preset safe voltage is set according to the working voltage requirements of the control module 200, the motor drive module 300 and the LED drive module 400, as well as safety standards. This safe voltage can not only ensure the normal work of each module, but also ensure the safety of the entire circuit system, prevent electrical faults, component damage and even safety accidents caused by excessive voltage, such as avoiding the risk of electric shock (below DC 36V) of users, etc.

[0094] The retro pulley fan control circuit further comprises a buzzer 700;

[0095] The buzzer 700 is connected to the control module 200;

[0096] The buzzer 700 is configured to perform fault alarm according to the command action of the control module 200.

[0097] It should be noted that when the fan control circuit fails, the control module 200 can detect the fault information. For example, it can be an abnormal current in the circuit, a cable sensor failure, or other problems with components related to the normal operation of the fan. Once the control module 200 detects a fault, it will send a command to the buzzer 700 according to the preset program. After the buzzer 700 receives the command from the control module 200, it will realize information feedback or fault alarm by short, multiple short, long, etc. of the buzzer 700, or different command actions received. In this way, the user can be reminded in time that the fan control circuit has a problem, so that the user can take appropriate measures, such as maintenance or inspection, etc.

[0098] In the present embodiment, by connecting the toggle switch 500 to the I / O port of the MCU, the on-off quantity is input as the forward and reverse control command, and the fan motor 800 can be controlled to rotate forward and reverse. And the isolating switch power supply 600 is used to reduce the output voltage to DC 36V, which is a safe voltage for human body, so as to reduce the insulation requirement of the motor, thereby improving the safety and reliability of the product. Through the short, multiple short, long, etc. of the buzzer 700, information feedback or fault alarm of different command actions received can be realized. In order for the user to take appropriate measures, such as maintenance or inspection, etc.

[0099] In addition, the present application also proposes a cable fan, which comprises the retro cable fan control circuit as described above. Since the cable fan adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0100] It should be noted that in this document, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or system. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article or system that includes the element.

[0101] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A control circuit for a retro-style lasso fan, the control circuit comprising: The control circuit of the retro-style cable fan comprises a cable switch module, a control module, a motor driving module and an LED driving module. The control module is connected with the cable switch module, the motor driving module and the LED driving module respectively. The control module is configured to receive a first switch signal input by the cable switch module, generate a first control signal corresponding to the first switch signal, and output the first control signal to the motor driving module. The motor driving module is configured to output a three-phase driving voltage with a voltage value lower than a preset voltage value to the fan motor through the first control signal. The control module is further configured to receive a second switch signal input by the cable switch module, generate a second control signal corresponding to the second switch signal, and output the second control signal to the LED driving module. The LED driving module is configured to output an LED driving voltage with a voltage value lower than a preset voltage value to the fan lamp through the second control signal.

2. The retro-ratio fan control circuit of claim 1, wherein, The cable switch module comprises a fan cable switch and a lamp cable switch. The control module is further connected with the fan cable switch and the lamp cable switch respectively. The fan cable switch is configured to output a first switch signal to the control module. The lamp cable switch is configured to output a second switch signal to the control module.

3. The retro lasso fan control circuit of claim 1, wherein, The motor driving module comprises a first MOS tube to a sixth MOS tube. The source of the first MOS tube is connected with an external power supply, the gate of the first MOS tube is connected with a first end of the control module, and the drain of the first MOS tube is connected with the drain of the fourth MOS tube and a first end of the fan motor. The source of the second MOS tube is connected with the external power supply, the gate of the second MOS tube is connected with a second end of the control module, and the drain of the second MOS tube is connected with the drain of the fifth MOS tube and a second end of the fan motor. The source of the third MOS tube is connected with the external power supply, the gate of the third MOS tube is connected with a third end of the control module, and the drain of the third MOS tube is connected with the drain of the sixth MOS tube and a third end of the fan motor. The source of the fourth MOS tube is grounded, the gate of the fourth MOS tube is connected with a fourth end of the control module, and the drain of the fourth MOS tube is further connected with the first end of the fan motor. The source of the fifth MOS tube is grounded, the gate of the fifth MOS tube is connected with a fifth end of the control module, and the drain of the fifth MOS tube is further connected with the second end of the fan motor. The source of the sixth MOS tube is grounded, the gate of the sixth MOS tube is connected with a sixth end of the control module, and the drain of the sixth MOS tube is further connected with the third end of the fan motor.

4. The retro lasso fan control circuit of claim 3, wherein, The fan motor is a low-voltage three-phase direct-current brushless motor.

5. The retro-lacostyle fan control circuit as set forth in claim 1, wherein, The LED driving module comprises a seventh MOS tube and an eighth MOS tube. The source of the seventh MOS tube is grounded, the drain of the seventh MOS tube is connected with a first end of the fan lamp, and the gate of the seventh MOS tube is connected with a seventh end of the control module. A source of the eighth MOS is connected to ground, a drain of the eighth MOS is connected to a second end of the fan lamp, and a gate of the eighth MOS is connected to an eighth end of the control module.

6. The retro lasso fan control circuit of claim 5, wherein, The fan lamp is a low-voltage LED lamp.

7. The retro lasso fan control circuit as recited in claim 1, wherein, The retro cable fan control circuit further comprises a toggle switch. The toggle switch is connected to an I / O pin of the control module. The toggle switch is configured to send a forward rotation control command and a reverse rotation control command to the control module, so that the control module performs forward rotation control and reverse rotation control of the fan motor.

8. The retro lasso fan control circuit of claim 1, wherein, The retro cable fan control circuit further comprises an isolation switch power supply. The isolation switch power supply is connected to the control module, the motor drive module, and the LED drive module. The isolation switch power supply is configured to reduce an external output voltage to a preset safe voltage.

9. The retro lasso fan control circuit as recited in claim 1, wherein, The retro cable fan control circuit further comprises a buzzer. The buzzer is connected to the control module. The buzzer is configured to perform fault alarm according to a command action of the control module.

10. A pull string fan characterized by, The cable fan comprises the retro cable fan control circuit according to any one of claims 1 to 9.

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