Combined type clothes airing machine control system

Abstract

The utility model discloses a combined type clothes airing machine control system, and aims to solve the problems of high 3C authentication cost and long development period caused by function integration of a traditional clothes airing machine. The system adopts a modular architecture and is composed of a core controller and an expansion controller. The core controller is responsible for basic functions of lifting, lighting and the like and comprises a main control module, a driving module, a relay module and a power supply module, an authentication circuit is arranged in the core controller, and only necessary 3C authentication is needed, so that the authentication cost and time are reduced. The expansion controller supports the functions of air drying, sterilization, drying and the like through the driving module, the relay module and the interface module, and the diversified requirements of users are met. And the two modules are connected through the wire connector module to realize flexible combination and independent upgrading of the functional modules. According to the design, the authentication hardware range is reduced, the development period is shortened, the cost is reduced, the requirements of the market for the high-cost-performance multifunctional clothes airing machine are met, and the product competitiveness is improved.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a combined clothes drying rack control system. Background Technology

[0002] Traditional technologies have long dominated the development of clothes drying rack control systems. Previous designs typically integrated all the functions of the clothes drying rack into a single controller. However, this approach has revealed numerous insurmountable flaws when facing modern market demands and certification standards. For example, when products require 3C certification for lighting applications, because all functions are tightly integrated into a single controller, each controller must independently complete a complex and extremely time-consuming certification process. This incurs a heavy economic burden; the high certification fees significantly increase costs for businesses, severely impacting their economic efficiency and market competitiveness.

[0003] The clothes drying rack control system disclosed in China (CN206877103U) only possesses basic control functions and suffers from severe deficiencies in functional expandability. When market demands drive companies to add new functional modules, the limitations of its initial design necessitate redesigning the circuitry to integrate into the original control system, forcing companies to restart the cumbersome 3C certification process. This not only further increases the company's costs and time investment but also makes product upgrades and improvements exceptionally difficult. It further highlights the inadequacy of traditional single-controller designs in responding to changing modern market demands, urgently requiring an innovative, more flexible, and efficient clothes drying rack control system to overcome this predicament. Utility Model Content

[0004] This invention overcomes the shortcomings of the above-mentioned technologies and provides a combined clothes drying rack control system, including a core controller and an expansion controller. The specific technical solution is as follows:

[0005] A combined clothes drying rack control system, comprising a core controller 1 and an expansion controller 2, characterized in that:

[0006] Core controller 1 includes:

[0007] The main control module 11 is used to receive external sensor signals and generate corresponding control signals, and is integrated into the circuit that requires certification;

[0008] The main control drive module 12 is connected to the main control module 11 and is used to receive the control signal and drive subsequent modules to perform corresponding actions.

[0009] The main control relay module 13 has its input terminal connected to the main control drive module 12 and its output terminal connected to an external motor.

[0010] Power supply module 14 is used to supply power to the entire core controller 1;

[0011] Extended controller 2 includes:

[0012] The extended drive module 21 is electrically connected to the main control module 11 and the power supply module 14 of the core controller 1;

[0013] An extended relay module 22 is connected to an extended drive module 21 at its input terminal and is controlled by the extended drive module 21.

[0014] The expansion interface module 23 has its input terminal connected to the expansion relay module 22 and is used to connect external expansion modules with different functions.

[0015] The core controller 1 and the expansion controller 2 are connected to a connector module 3 and are electrically connected through it.

[0016] Preferably, the connector module 3 includes a first expansion connector CN8 and a second expansion connector CN9.

[0017] Preferably, the expansion controller 2 further includes a microcontroller module 24, which is connected to the main control module 11 via a first expansion connector CN8. The input terminal of the microcontroller module 24 receives external signals for the expansion function via a second expansion connector CN9, and the output terminal of the microcontroller module 24 is connected to the expansion driver module 21 to drive the execution components or functional modules of the expansion controller 2, thereby realizing the control and execution of the expansion function.

[0018] Preferably, the input terminal of the power supply module 14 is connected to an external mains power supply, and it is provided with a first voltage output terminal 141 and a second voltage output terminal 142.

[0019] Preferably, the main control module 11 includes multiple detection and control ports 111, which are used to receive external sensor signals and provide control over the main control drive module 12; wherein, the detection and control ports 111 include a selection port P1, a lower limit port P2, an upper limit port P3, an obstacle detection port P4, a 5V power input port P5, an overcurrent port P6, a rising port P7 and a falling port P8 respectively connected to the input terminal of the main control drive module 12, and an illumination port P9; the 5V power input terminal P5 is connected to a DC filter circuit 112, the DC filter circuit 112 including a first diode D7, a first capacitor C10, and a second... Two capacitors CD12 are connected, with the anode of the first diode D7 connected to the voltage output terminal, and the cathode connected to one end of the first capacitor C10 and the second capacitor CD12, and the other end grounded; the selection port P1 is grounded through the first resistor R34 and is also connected to the optocoupler isolation module 15; the overcurrent port P6 is connected to the second resistor R36, the third capacitor CD9 and the fourth capacitor C19, with one end of these components connected to the overcurrent port and the other end grounded; the lighting port P9 is connected to the lighting module 16 through the third resistor R35 in series; the rising port P7 and the falling port P8 are respectively connected to the input terminals of the main control drive module 12.

[0020] Preferably, the optocoupler isolation module 15 includes a fourth resistor R48, a fifth resistor R49, a sixth resistor R50, a second diode D11, a third diode D12, and an optocoupler IC13 of model PC817; wherein, the fourth resistor R48 and the fifth resistor R49 are connected in series to the anode of the third diode D12, the second diode D11 and the third diode D12 are connected in reverse parallel, and the cathodes of both are connected to the input terminal of the optocoupler IC13.

[0021] Preferably, the power supply module 14 includes a connector CN7 connected to the mains power supply. The connector CN7 is connected to an input filter circuit 143, which includes a second inductor L3 and a capacitor CB1, used to suppress interference from the input power supply and achieve filtering. The input filter circuit 143 is connected to a high-voltage rectifier circuit 144, which includes a rectifier bridge IC1, an eighth capacitor CB3, and a ninth capacitor CB4. The rectifier bridge IC1 is used to convert AC power to DC power, and the eighth and ninth capacitors CB3 and CB4 are used to filter the high-voltage DC power. The high-voltage rectifier circuit 144 is connected to a control circuit 145 and a transformer T1. The control circuit 145 includes a first control chip IC2 and a MOSFET switch IC3. The first control chip IC2 is used to control the operation of MOSFET switch IC3. The drain of MOSFET switch IC3 is connected to the primary winding of transformer T1. The source of MOSFET switch IC3 is grounded through the sixth resistor R13, the seventh resistor R14, the eighth resistor R15, and the ninth resistor R16. The drain of MOSFET switch IC3 is also connected to the tenth resistor R12, the eleventh resistor R47, and the fourth diode D6 to realize switching control and power conversion. The secondary winding of transformer T1 is connected to an output rectifier circuit 146. The output rectifier circuit 146 includes an output rectifier diode IC4, a tenth capacitor CD5, an eleventh capacitor CD6, a twelfth capacitor CD3, a twelfth resistor R20, and a thirteenth resistor R21.

[0022] Preferably, the extended relay module 22 includes: a main control relay K1, whose input terminal is connected to the mains power line and whose control terminal receives the control signal from the core controller 1; multiple extended function relays K2, whose input terminals are connected to the output terminal of the main control relay K1, whose control terminals receive the extended control signal from the core controller 1, and whose output terminals are respectively connected to the corresponding extended interface module 23; the extended interface module 23 includes a drying interface, an air-drying interface, and a sterilization interface.

[0023] Preferably, the output terminal of the output rectifier circuit 146 is connected to the buck converter module 17. The buck converter module 17 includes a second control chip IC6, whose input terminal VIN is connected to the output of the output rectifier circuit, its control terminal EN receives the enable signal, and its output terminal Vout provides a stable target output voltage; the first capacitor C7 and the second capacitor CD7 are connected in parallel between the input terminal of the second control chip and ground; one end of the third inductor L2 is connected to the switch terminal SW of the second control chip, and the other end is connected to the output terminal; the third capacitor C8 and the fourth capacitor CD8 are connected in parallel between the output terminal of the third inductor and ground.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] 1. Shorten the new product development cycle: Separate the core functions from the extended functions. After the core controller completes the basic and critical motor and lighting control and obtains certification, the extended functions can be flexibly added according to market demand without waiting for the entire system to be recertified, which greatly speeds up the speed of launching new products to the market.

[0026] 2. Reduce certification costs and time: Only the core controller needs to undergo necessary certifications such as lighting-related 3C certification, avoiding the high costs and long time required to certify each integrated controller, effectively saving enterprise costs and improving economic efficiency.

[0027] 3. Enhance the flexibility of function combinations: Users can easily select and add functional modules such as drying, air drying, and sterilization through the expansion controller according to actual usage scenarios and personal needs, so as to realize the personalized customization of the clothes drying rack functions, improve the user experience, and enhance the product's market competitiveness. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the control system of the combined clothes drying rack in this case.

[0029] Figure 2 This is the circuit schematic of the core controller for 3C certification in this case.

[0030] Figure 3 This is the circuit schematic diagram of the first embodiment of the extended function controller in this case.

[0031] Figure 4 This is the circuit schematic diagram of the second embodiment of the extended function controller in this case.

[0032] Figure 5 This is the circuit diagram of the power supply module in this case. Detailed Implementation

[0033] The following examples provide a more detailed description of the features and other related characteristics of this utility model, to facilitate understanding by those skilled in the art:

[0034] Core controller implementation

[0035] When designing and manufacturing the core controller, the following steps and principles must be followed. The multiple detection and control ports 111 of the main control module 11 should be precisely laid out and wired. Taking the selection port P1 as an example, the working principle of the optocoupler isolation module 15 connected to it is as follows: When an external signal is input to the selection port P1, the signal first passes through the first resistor R34 for current limiting to prevent excessive current from damaging subsequent components. Then, the signal enters the optocoupler isolation circuit composed of the fourth resistor R48, the fifth resistor R49, the sixth resistor R50, the second diode D11, the third diode D12, and the optocoupler IC13. The fourth resistor R48 and the fifth resistor R49 are connected in series to the anode of the third diode D12, and the second diode D11 and the third diode D12 are connected in anti-parallel, with their cathodes connected to the input terminal of the optocoupler IC13. When a signal arrives, it will cause the corresponding diode to conduct or cut off, thereby changing the voltage at the input terminal of the optocoupler IC13 and driving the light-emitting diode to emit light. After the light-emitting diode emits light, the phototransistor receives the light and turns on, realizing the electrical isolation transmission of the signal. This safely transmits the input signal to the internal circuit of the main control module 11 for processing, effectively avoiding the impact of external interference on the core part of the system.

[0036] The DC filter circuit 112 connected to the 5V power input port P5 consists of a first diode D7, a first capacitor C10, and a second capacitor CD12. Its working principle utilizes the unidirectional conductivity of the diode and the energy storage characteristics of the capacitor to stabilize the power supply voltage. When mains power is connected, voltage fluctuations and high-frequency noise may occur. The anode of the first diode D7 is connected to the voltage output terminal, and the cathode is connected to one end of the first capacitor C10 and one end of the second capacitor CD12, with the other end grounded. During voltage fluctuations, if the voltage rises, the diode D7 cuts off, preventing excessive voltage from impacting subsequent circuits. Simultaneously, the first capacitor C10 and the second capacitor CD12 filter and store energy, maintaining a stable 5V DC output voltage to provide a stable power supply for the chips and other components within the module, ensuring their normal operation.

[0037] The overcurrent port P6 connects to the second resistor R36, the third capacitor CD9, and the fourth capacitor C19. Its overcurrent protection principle is as follows: Under normal operating conditions, the current in the circuit is within the normal range, and the voltage drop across the second resistor R36 is also at a normal level. When an overcurrent occurs, the current increases, and the voltage drop across the second resistor R36 increases accordingly. At this time, the third capacitor CD9 and the fourth capacitor C19 filter this voltage signal to remove noise interference, enabling the system to accurately detect the overcurrent signal. Once an overcurrent is detected, the system triggers the corresponding protection mechanism, such as cutting off part of the circuit or issuing an alarm signal, to protect the electronic components in the circuit from damage by excessive current, ensuring the safety and reliability of the system.

[0038] The lighting port P9 is connected to the lighting module 16 via a third resistor R35 in series. Its operation is as follows: When the main control module 11 sends a lighting control signal based on user operation or system preset conditions, current flows out from the lighting port P9 and through the third resistor R35. The third resistor R35 limits the current, preventing excessive current from directly impacting the lighting module 16 and ensuring that the lighting module 16 operates within a safe current range. The current after current limiting drives the lighting driver module CNB to emit light, providing sufficient light for clothes drying and meeting the user's needs in different environments.

[0039] The rising port P7 and falling port P8 are connected to the input terminals of the main control drive module 12. Their working principle is as follows: During the operation of the clothes drying rack, the main control module 11 generates corresponding control signals based on user operation commands such as pressing the rise or fall button or sensor feedback such as the position information of the clothesline. These control signals are transmitted to the main control drive module 12 through the rising port P7 and falling port P8. After receiving the signals, the main control drive module 12 amplifies and converts the signals using its internal drive circuitry and electronic components. For example, it appropriately amplifies the voltage and current of the signals to ensure reliable operation of the relays in the subsequent main control relay module 13. Simultaneously, it converts the control signals into a form suitable for motor drive, achieving precise control of the motor, thereby raising or lowering the clothesline to complete the clothes drying operation.

[0040] After the power supply module 14 is connected to the external mains power, it first connects to the connector CN7, and then enters the input filter circuit 143. The second inductor L3 and the capacitor CB1 in the input filter circuit 143 work together to achieve the filtering function. The second inductor L3 has inductive reactance to the high-frequency components of the AC power, which can block high-frequency interference signals from passing through, while the capacitor CB1 filters the low-frequency components of the AC power. The two work together to effectively suppress the interference of the input power supply and ensure that the subsequent circuits receive a relatively clean mains power signal.

[0041] The power signal, after being processed by the input filter circuit 143, enters the high-voltage rectifier circuit 144. The rectifier bridge IC1 converts AC to DC. The eighth capacitor CB3 and the ninth capacitor CB4 filter the high-voltage DC, further smoothing the DC voltage. Its working principle is as follows: the rectifier bridge IC1 utilizes the unidirectional conductivity of diodes to convert the positive and negative half-cycles of AC to positive and negative DC voltages, respectively, thus achieving the AC to DC conversion. The eighth capacitor CB3 and the ninth capacitor CB4 are connected in parallel at the DC output terminal. Through the energy storage and discharge characteristics of capacitors, they filter the DC voltage, reducing voltage ripple and fluctuations, providing a more stable DC power supply for subsequent circuits.

[0042] The power signal output from the high-voltage rectifier circuit 144 is connected to the control circuit 145 and the transformer T1. The first control chip IC2 in the control circuit regulates the current magnitude and frequency of the primary winding of transformer T1 by controlling the on / off state of the MOSFET switch IC3. For example, when the system needs to output a lower voltage, the first control chip IC2 controls the MOSFET switch IC3 to turn on and off at a higher frequency, causing the current in the primary winding of transformer T1 to change rapidly. According to the law of electromagnetic induction, the secondary winding of transformer T1 will induce a correspondingly lower voltage. In this process, the drain of the MOSFET switch IC3 is connected to the primary winding of transformer T1, and its source is grounded through resistors R13, R14, R15, and R16. The drain is also connected to resistors R12 and R47, and diode D6. These resistors and diodes work together to optimize the switching control of the MOSFET switch IC3 and the power conversion, ensuring stable circuit operation and efficient conversion.

[0043] The secondary winding of transformer T1 is connected to output rectifier circuit 146, which includes output rectifier diode IC4, tenth capacitor CD5, eleventh capacitor CD6, twelfth capacitor CD3, twelfth resistor R20, and thirteenth resistor R21. Its working principle is as follows: when the secondary winding of transformer T1 outputs AC voltage, output rectifier diode IC4 uses its unidirectional conductivity to convert the AC voltage to DC voltage. Tenth capacitor CD5, eleventh capacitor CD6, and twelfth capacitor CD3 filter the DC voltage, further smoothing the voltage ripple. Twelfth resistor R20 and thirteenth resistor R21 serve to limit current and divide voltage, ensuring that the output voltage is stable within a suitable range, providing a stable and reliable power supply to the various modules of the core controller.

[0044] After receiving the control signal from the main control module 11, the main control drive module 12 first amplifies the signal using its internal drive circuit. For example, the voltage amplitude of the signal is amplified to a level sufficient to drive subsequent relays and other actuators using an amplifier circuit. Simultaneously, the current of the signal is amplified to ensure sufficient power to drive the relevant equipment. During signal amplification and current enhancement, the drive module appropriately shapes and modulates the signal according to different control signal types and the requirements of the target actuators. For example, for signals controlling a motor, it converts them into pulse width modulation (PWM) signals suitable for recognition by the motor drive chip or circuit, thereby precisely controlling the motor's speed and direction. Through these processing steps, the main control drive module 12 converts the control signal from the main control module 11 into a drive signal capable of effectively driving the main control relay module 13 and other related actuators, ensuring the system operates according to predetermined logic.

[0045] The main control relay module 13 controls the opening and closing state of the relay based on the drive signal transmitted from the main control drive module 12. The relay selected for this module has suitable rated voltage, current, and good switching performance. For example, when the main control drive module 12 sends a drive signal to raise the motor, the corresponding relay coil is energized, generating a magnetic field that closes the relay contacts, thereby connecting the external motor to the power supply, and the motor starts running, driving the clothesline to rise. When a stop signal is received, the relay coil is de-energized, the magnetic field disappears, the contacts open, and the motor stops working.

[0046] Extended controller implementation

[0047] First embodiment of the extended function controller: In cases where the extended functions are relatively simple, the design and fabrication are based on the circuit schematic of the first embodiment of the extended function controller. The extended drive module 21 receives control signals from the core controller 1, and its internal circuitry amplifies and converts the signals. For example, when the core controller sends a signal to activate an extended function such as drying, the amplifier in the extended drive module 21 amplifies the signal voltage, enabling it to drive the relay in the extended relay module 22. Simultaneously, the driver chip converts the signal into a level signal suitable for relay control.

[0048] In the extended relay module 22, the control terminal of the main control relay K1 is connected to the neutral wire. One end of its coil is connected to a specific control voltage source, such as a 5V power supply; assuming pin 1 is connected to 5V and the other end is grounded (pin 2 is grounded). When the core controller sends an extended function start signal, the control voltage is applied to the coil, energizing it and generating a magnetic field. Due to K1's special connection, its contacts activate at this time, controlling the neutral wire connection of the remaining relays. For example, if the user selects to activate the drying function, the core controller sends a start signal, K1 activates, connecting the neutral wire of the subsequent circuit, providing a neutral wire path for the drying function-related relays, thus enabling the drying function to start.

[0049] Extended function relays K2, K3, and K4 correspond to different extended interface modules 23. Taking the drying function as an example, K2 controls the drying interface. When the main control relay K1 connects to the neutral line, if the core controller further sends a specific control signal for the drying function, relay K2 controls its contacts to close or open according to the signal. The coil of K2 is powered by the corresponding control voltage, such as pin 1 connected to 5V and pin 2 grounded. When the control signal energizes the coil, the contacts close, and the mains power supplies the drying interfaces CN1 and CN2 through K2, and the drying function module starts working; conversely, when the control signal disappears, the K2 coil is de-energized, the contacts open, and the drying function stops. Similarly, for other extended functions such as air drying and sterilization, the corresponding relays are also controlled by the core controller in this way to achieve precise function control.

[0050] A second embodiment of the extended function controller:

[0051] When there are many extended functions and complex control logic required, implementation is carried out according to the circuit schematic of the first embodiment of the extended function controller. In this case, the microcontroller module 24 in the extended controller plays a crucial role. The microcontroller module 24 receives control signals from the core controller through the first extended connector CN8, and its internal microprocessor analyzes and processes the signals according to a preset program. For example, when the user simultaneously selects to activate both the drying and sterilization functions, the core controller 1 sends corresponding control commands through CN8. After receiving the signals, the microcontroller module 24 first decodes and identifies the signals to determine the user's operational intent. Then, the microprocessor performs calculations and judgments according to the current system operating status and resource allocation, following the preset program logic.

[0052] After confirming that the drying and sterilization functions can be activated simultaneously, the microcontroller module 24 will systematically control the sequence and time intervals of the extended function relays K2, K3, K4, etc. The preheating phase of the drying function may be initiated first by closing relay K2 corresponding to the drying interface, thus initiating preheating of the drying equipment. Once a certain temperature or time condition is met, the sterilization function will then be activated by closing relay K3 corresponding to the sterilization interface.

[0053] Meanwhile, during operation, the microcontroller module 24 continuously monitors the working status of each functional module and obtains feedback information through sensors connected to relevant circuits, such as temperature and humidity sensors. Based on this feedback information, the microcontroller module 24 adjusts the relay control signals in a timely manner to ensure that the drying and sterilization functions can work together efficiently and avoid mutual interference or resource conflicts, thereby achieving stable operation and optimized control of complex extended functions.

[0054] During the programming of the microcontroller module 24, developers will write detailed control programs based on different combinations of extended functions and possible scenarios. The programs will include various logical judgments and loop structures to achieve precise control over complex extended functions. For example, when controlling the coordinated operation of drying and sterilization functions, the program will set a timer to monitor the running time of each function, use a comparator to determine whether parameters such as temperature and humidity have reached preset values, and adjust the relay control signals based on these judgment results to ensure stable system operation and high efficiency.

[0055] Through the above detailed implementation methods, the technical solution of this utility model can be fully realized, and an efficient, flexible and stable combined clothes drying rack control system can be constructed, effectively solving the problems existing in the prior art and meeting the market demand for diversified functions and efficient control of clothes drying racks.

[0056] As stated above, this case protects a combined clothes drying rack control system, and all technical solutions that are the same as or similar to this case should be considered to fall within the scope of protection of this case.

Claims

1. A combined clothes drying machine control system, comprising a core controller (1) and an extension controller (2), characterized in that: the core controller (1) comprises: a main control module (11) for receiving external sensor signals and generating corresponding control signals, and integrated with a circuit requiring authentication; a main control drive module (12) connected with the main control module (11) for receiving the control signals and driving subsequent modules to perform corresponding actions; a main control relay module (13) with its input end connected with the main control drive module (12) and its output end connected with an external motor; a power supply module (14) for supplying power to the entire core controller (1); the extension controller (2) comprises: an extension drive module (21) electrically connected with the main control module (11) and the power supply module (14) of the core controller (1); an extension relay module (22) with its input end connected with the extension drive module (21) and controlled by the extension drive module (21); an extension interface module (23) with its input end connected with the extension relay module (22) and used for connecting external extension modules with different functions; wherein the core controller (1) and the extension controller (2) are connected with a wiring module (3) and electrically connected through the wiring module (3).

2. A combination clothes drying machine control system according to claim 1, wherein The wiring module (3) comprises a first extension wiring CN8 and a second extension wiring CN9.

3. A combined clothes drying machine control system according to claim 1 or 2, characterised in that, The extension controller (2) further comprises a single-chip microcomputer module (24), which is communicatively connected with the main control module (11) through the first extension wiring CN8; the input end of the single-chip microcomputer module (24) receives external signals of extension functions through the second extension wiring CN9, and the output end of the single-chip microcomputer module (24) is connected to the extension drive module (21) for driving the execution components or function modules of the extension controller (2), so as to realize the control and execution of the extension functions.

4. The combination clothes drying machine control system of claim 1, wherein, The input end of the power supply module (14) is connected with external mains, which is provided with a first voltage output end (141) and a second voltage output end (142).

5. The combination clothes drying machine control system of claim 1, wherein, The master module (11) includes a plurality of detection control ports (111) for receiving external sensor signals and providing control to the master drive module (12); wherein the detection control port (111) includes a selection port P1, a lower limit port P2, an upper limit port P3, an obstruction port P4, a 5V power input port P5, an overcurrent port P6, a rising port P7 and a falling port P8 connected to the input of the master drive module (12) respectively, and an illumination port P9; the 5V power input P5 is connected with a direct current filtering circuit (112), the direct current filtering circuit (112) includes a first diode D7, a first capacitor C10 and a second capacitor CD12, wherein the anode of the first diode D7 is connected to the voltage output end, the cathode is connected to one end of the first capacitor C10 and the second capacitor CD12, and the other end is grounded; the selection port P1 is grounded through a first resistor (R34), and is also connected with an optical coupling isolation module (15); the overcurrent port P6 is connected with a second resistor R36, a third capacitor CD9 and a fourth capacitor C19, one end of these elements is connected with the overcurrent port, and the other end is grounded; the illumination port P9 is connected with an illumination module (16) through a third resistor R35 in series; the rising port P7 and the falling port P8 are connected to the input of the master drive module (12) respectively.

6. A combined clothes drying machine control system according to claim 5, wherein, The optical coupling isolation module (15) includes a fourth resistor R48, a fifth resistor R49, a sixth resistor R50, a second diode D11, a third diode D12 and a photoelectric coupler IC13 of model PC817; wherein the fourth resistor R48 and the fifth resistor R49 are connected in series to the anode of the third diode D12, the second diode D11 and the third diode D12 are connected in reverse parallel, and the cathodes thereof are connected to the input of the photoelectric coupler IC13.

7. The combination clothes drying machine control system of claim 1, wherein, The power supply module (14) includes a terminal CN7 connected to the mains, which is connected to an input filter circuit (143) including a second inductor L3 and a capacitor CB1 for suppressing interference of the input power supply and achieving filtering; the input filter circuit (143) is connected to a high-voltage rectifier circuit (144), which includes a rectifier bridge IC1, an eighth capacitor CB3 and a ninth capacitor CB4, the rectifier bridge IC1 is used to convert alternating current into direct current, and the eighth capacitor (CB3) and the ninth capacitor (CB4) are used to filter high-voltage direct current; the high-voltage rectifier circuit (144) is connected to a control circuit (145) and a transformer T1, the control circuit (145) includes a first control chip IC2 and a MOSFET switch tube IC3, the first control chip IC2 is used to control the work of the MOSFET switch tube IC3, the drain electrode of the MOSFET switch tube IC3 is connected to the primary winding of the transformer T1, the source electrode of the MOSFET switch tube IC3 is grounded through the sixth resistor R13, the seventh resistor R14, the eighth resistor R15 and the ninth resistor R16, and the drain electrode of the MOSFET switch tube IC3 is also connected to the tenth resistor R12, the eleventh resistor R47 and the fourth diode D6, which are used to realize switching control and electric energy conversion; the secondary winding of the transformer T1 is connected to an output rectifier circuit (146), which includes an output rectifier diode IC4, a tenth capacitor CD5, an eleventh capacitor CD6, a twelfth capacitor CD3, a twelfth resistor R20 and a thirteenth resistor R21.

8. The combination clothes drying machine control system of claim 1, wherein, The expansion relay module (22) includes: a total control relay K1, the input end of which is connected to the mains live line, and the control end of which receives the control signal of the core controller (1); a plurality of expansion function relays (K2, K3, K4), the input end of which is connected to the output end of the total control relay K1, the control end of which receives the expansion control signal of the core controller (1), and the output end of which is respectively connected to a corresponding expansion interface module (23); the expansion interface module (23) includes a drying interface, an air-drying interface and a sterilization interface.

9. The combination clothes drying machine control system of claim 7, wherein, The output end of the output rectifier circuit (146) is connected to a step-down conversion module (17), which includes a second control chip IC6, the input end VIN of which is connected to the output of the output rectifier circuit, the control end EN of which receives an enable signal, and the output end Vout of which provides a stable target output voltage; a first capacitor C7 and a second capacitor CD7 are connected in parallel between the input end of the second control chip and the ground; one end of a third inductor L2 is connected to the switching end SW of the second control chip, and the other end is connected to the output end; a third capacitor C8 and a fourth capacitor CD8 are connected in parallel between the output end of the third inductor and the ground.

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