Control system for household appliances and wire controller

Abstract

The utility model discloses a control system and wire controller for household electrical appliances, wherein the control system comprises a control module, a rectifier module, a communication module and a key module. The rectifier module is connected to the two-wire bus of the household electrical appliances to rectify the bus voltage and generate a power supply voltage. The key module is connected to the control module to generate a key input signal. The control module is connected to the rectifier module through the communication module to communicate with the household electrical appliances based on the two-wire system and control the household electrical appliances based on the key input signal. The control system and wire controller for household electrical appliances can realize power supply and communication with the household electrical appliances through the two-wire system. Only two wires are needed to simultaneously transmit the power supply and signals, which reduces the amount of wire and the complexity of the interface, lowers the installation and maintenance costs, and is especially suitable for long-distance or complex layout scenarios. The modulation and demodulation technology can distinguish the signals and the power supply, effectively suppress electromagnetic interference, and ensure stable data transmission.

Description

Technical Field

[0001] This utility model belongs to the field of intelligent control technology, specifically relating to a control system and wired controller for home appliances. Background Technology

[0002] Traditional home appliance electrical controllers typically use an independent power supply and a separate signal communication line (such as RS-485, CAN bus, etc.). However, this type of solution has the following technical drawbacks:

[0003] Complex cabling and high cost: Traditional solutions require multiple cables (such as power cord + communication cord + ground wire), which makes installation cumbersome, especially when deployed over long distances or in multiple rooms, significantly increasing the cost of cabling and construction.

[0004] Limited control methods: It can usually only be controlled manually and cannot be remotely operated.

[0005] Insufficient anti-interference capability: The system is often in a strong electromagnetic environment (such as variable frequency compressors, motor start-stop). Traditional non-isolated communication is susceptible to common-mode noise and ground loop interference, which can lead to signal distortion or communication interruption.

[0006] Weak EMI protection: Existing wired controllers lack integrated protection against transient interference such as surges and electrostatic discharge (ESD), requiring complex external protection circuits, which increases hardware complexity.

[0007] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a control system and wired controller for home appliances.

[0008] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0009] The purpose of this invention is to provide a control system and wired controller for home appliances, which can balance cost control and anti-interference protection for long-distance deployment.

[0010] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0011] A control system for home appliances includes a control module, a rectifier module, a communication module, and a button module. The rectifier module is connected to a two-wire bus of the home appliance to rectify the bus voltage to generate a power supply voltage. The button module is connected to the control module to generate button input signals. The control module is connected to the rectifier module through the communication module to communicate with the home appliance based on a two-wire system and to control the home appliance based on the button input signals.

[0012] In one or more embodiments of this utility model, the communication module includes a receiving unit and a transmitting unit. The receiving unit is connected to a rectifier module and a control module to generate a received signal based on a carrier signal on a two-wire bus. The transmitting unit is connected to a control module and a rectifier module to modulate the current on the rectifier bridge based on the control of the control module.

[0013] In one or more embodiments of the present invention, the receiving unit includes an isolation unit and a comparison unit. The isolation unit is connected to the rectification module and the comparison unit to isolate and transmit the carrier signal. The comparison unit is connected to the reference voltage and the control module to compare the carrier signal and the reference voltage to generate a received signal.

[0014] In one or more embodiments of the present invention, the receiving unit further includes a filtering and shaping unit, which is connected to the isolation unit and the comparison unit to filter and shape the carrier signal.

[0015] In one or more embodiments of this utility model, the transmitting unit includes a resistor unit and a switching unit, the resistor unit and the switching unit are connected in series between the rectifier module and the ground voltage, and the switching unit is connected to the control module to modulate the current on the rectifier bridge by turning it on or off based on the control of the control module.

[0016] In one or more embodiments of the present invention, the control system further includes a power supply module connected to the rectifier module and the control module to convert the power supply voltage into the operating voltage required by the control module.

[0017] In one or more embodiments of this utility model, the power module includes an LDO unit or a DC-DC converter unit.

[0018] In one or more embodiments of this utility model, the control system further includes an infrared receiving module, the control module being connected to the infrared receiving module to receive infrared signals and control the home appliances based on the infrared signals; and / or the control system further includes a WIFI module, the control module being connected to the WIFI module to receive WIFI signals and control the home appliances based on the WIFI signals; and / or the control system further includes a temperature sensing module, the temperature sensing module being used to generate temperature sensing signals, the control module being connected to the temperature sensing module to control the home appliances based on the temperature sensing signals.

[0019] In one or more embodiments of this utility model, the control system further includes a lighting module connected to the control module to emit light based on the control of the control module; and / or the control system further includes a storage module connected to the control module to store data; and / or the control system further includes a liquid crystal display module connected to the control module to display data based on the control of the control module; and / or the control system further includes a buzzer module connected to the control module to buzz based on the control of the control module.

[0020] A specific embodiment of this utility model also provides a wired controller, including a circuit board with the above-described control system for home appliances.

[0021] Compared with existing technologies, this utility model's control system and wired controller for home appliances achieve power supply and communication with the appliances through a two-wire system. Only two wires are needed to transmit power and signals simultaneously, reducing cable usage and interface complexity, and lowering installation and maintenance costs. It is particularly suitable for long-distance or complex layout scenarios. By using modulation and demodulation technology to distinguish between signals and power, it effectively suppresses electromagnetic interference and ensures stable data transmission. It is easy to integrate with other devices and supports future functional expansion or system upgrades. Furthermore, it expands to include various remote control modules such as infrared and Wi-Fi, making system control more flexible and convenient. This control system can be used in home appliances such as air conditioners, fresh air systems, and underfloor heating, greatly enhancing the level of smart homes. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a system structure diagram of the control system in one embodiment of the present invention.

[0024] Figure 2 This is a circuit diagram of the rectifier module and the power supply module in one embodiment of the present invention.

[0025] Figure 3 This is a circuit diagram of the power supply module in another embodiment of the present invention.

[0026] Figure 4 This is a circuit diagram of the communication module in one embodiment of the present invention.

[0027] Figure 5This is a circuit diagram of the button module in one embodiment of the present invention.

[0028] Figure 6 This is a circuit diagram of an optocoupler module in one embodiment of the present invention.

[0029] Figure 7 This is a circuit diagram of the infrared receiving module in one embodiment of the present invention.

[0030] Figure 8 This is a circuit diagram of a temperature sensing module in one embodiment of the present invention.

[0031] Figure 9 This is a circuit diagram of the lighting module in one embodiment of the present invention.

[0032] Figure 10 This is a circuit diagram of a liquid crystal display module in one embodiment of the present invention.

[0033] Figure 11 This is a circuit diagram of the buzzer module in one embodiment of the present invention.

[0034] Figure 12 This is a circuit diagram of the storage module in one embodiment of the present invention.

[0035] Figure 13 This is a circuit diagram of the control module in one embodiment of the present invention. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0037] The terms "coupled," "connected," or "linked" in this specification include both direct and indirect connections. Indirect connections are those made through an intermediate medium, such as those made through an electrically conductive medium, which may have parasitic inductance or capacitance. Indirect connections may also include connections made through other active or passive devices to achieve the same or similar functional purpose, such as connections through switches, follower circuits, or other circuits or components. Furthermore, in this specification, terms such as "first" and "second" are primarily used to distinguish one technical feature from another, and do not necessarily require or imply any actual relationship, quantity, or order between these technical features.

[0038] In the detailed description of this specification, reference is made to the accompanying drawings, which form a part thereof, wherein like reference numerals always denote like parts, and wherein exemplary embodiments are shown by way of example that may be implemented. It should be understood that other embodiments may be utilized, and structural or logical changes may be made, without departing from the scope of this application. Therefore, the following detailed description should not be considered limiting.

[0039] The various operations in the specification may be described sequentially as multiple discrete actions or operations in a manner most conducive to understanding the claimed subject matter. However, the order of description should not be construed as implying that these operations must be sequentially related. Specifically, these operations may not be performed in the order presented. The described operations may be performed in a different order than in the described embodiments. Various additional operations may be performed in additional embodiments and / or the described operations may be omitted.

[0040] For the purposes of this application, the phrase "A and / or B" means (A), (B), or (A and B). For the purposes of this application, the phrase "A, B and / or C" means (A), (B), (C), (A and B), (A and C), (B and C), or (A, B and C).

[0041] Various components and devices may be mentioned or shown in the singular form herein, but only for the convenience of discussion, and any element mentioned in the singular form may include multiple such elements as taught herein.

[0042] The description uses the phrases "in one embodiment," "in other embodiments," or "in some embodiments," each of which can refer to one or more of the same or different embodiments. Furthermore, the terms "comprising," "including," "having," etc., used in relation to embodiments of this application are synonymous.

[0043] like Figure 1 As shown, a control system for home appliances in one embodiment of this utility model includes a control module 10, a rectifier module 20, a power supply module 30, a communication module 40, a button module 61, a WIFI module 62, an infrared receiver module 63, a temperature sensor module 50, a light module 71, a liquid crystal display module 72, a buzzer module 73, and a storage module 80.

[0044] The rectifier module 20 is connected to the two-wire bus of the home appliance to rectify the bus voltage and generate the power supply voltage. The power supply module 30 is connected to the rectifier module 20 and the control module 10 to convert the power supply voltage into the operating voltage required by the control module 10.

[0045] The button module 61 is connected to the control module 10 to generate button input signals. The control module 10 is connected to the infrared receiver module 63 to receive infrared signals and the WIFI module 62 to receive WIFI signals. The temperature sensor module 50 generates temperature sensing signals, and the control module 10 is connected to the temperature sensor module 50 to receive these signals. The control module 10 is connected to the rectifier module 20 via the communication module 40 to communicate with the home appliances using a two-wire system and to control the home appliances based on one or more of the button input signals, infrared signals, WIFI signals, and temperature sensing signals.

[0046] The lighting module 71 is connected to the control module 10 to emit light based on the control of the control module 10; the LCD display module 72 is connected to the control module 10 to display data based on the control of the control module 10; the buzzer module 73 is connected to the control module 10 to sound a buzzer based on the control of the control module 10; and the storage module 80 is connected to the control module 10 to store data.

[0047] like Figure 2 As shown, the rectifier module 20 includes inductors L1 and L2, diodes D1-D4, and capacitor C1. The first ends of inductors L1 and L2 are respectively connected to a two-wire bus of the household appliance. The second end of inductor L1 is connected to the anode of diode D1 and the cathode of diode D3. The second end of inductor L2 is connected to the anode of diode D2 and the cathode of diode D4. The cathodes of diodes D1 and D2 are connected to the first end of capacitor C1 to form node N1. The anodes of diodes D3 and D4, and the second end of capacitor C1 are connected to ground voltage.

[0048] By incorporating a rectifier module 20, the influence of voltage polarity on the appliance side and the control system side is eliminated. In one embodiment, the rectifier module 20 rectifies the bus voltage on the appliance to 18V.

[0049] like Figure 2 As shown, in one embodiment, the power module 30 includes an LDO unit. Exemplarily, the LDO unit includes an LDO chip U4 and its peripheral circuitry; the LDO chip U4 is preferably an LD1117AG. The LDO unit is connected to node N1 and converts the 18V voltage to the 5V operating voltage required by the control module 10.

[0050] like Figure 3 As shown, in another embodiment, the power module 30 may also include a DC-DC conversion unit. Exemplarily, the DC-DC conversion unit includes a DC-DC chip U5 and its peripheral circuitry; the DC-DC chip U5 is preferably a BL9641. The DC-DC conversion unit is connected to node N1 and converts the 18V voltage to the 5V operating voltage required by the control module 10.

[0051] Understandably, the operating voltage generated by the power module 30 can also power other modules besides the control module 10, rectifier module 20 and power module 30.

[0052] like Figure 4 As shown, the communication module 40 includes a receiving unit 42 and a transmitting unit 41. The receiving unit 42 is connected to the rectifier module 20 and the control module 10 to generate a received signal based on the carrier signal on the two-wire bus. The transmitting unit 41 is connected to the control module 10 and the rectifier module 20 to modulate the current on the rectifier bridge based on the control of the control module 10.

[0053] Specifically, the receiving unit 42 includes an isolation unit, a filtering and shaping unit, and a comparison unit. The isolation unit is connected to the rectifier module 20 and the filtering and shaping unit to isolate and transmit the carrier signal. The filtering and shaping unit is connected to the comparison unit to filter and shape the carrier signal. The comparison unit is connected to the reference voltage and the control module 10 to compare the carrier signal and the reference voltage to generate a received signal.

[0054] For example, the isolation unit includes a capacitor C3, the first end of which is connected to node N1, and the second end of which is connected to the filter shaping unit.

[0055] Preferably, the receiving unit 42 further includes a diode D7, the cathode of which is connected to the second terminal of the capacitor C3, and the anode of which is connected to ground voltage. The diode D7 is used for circuit protection.

[0056] The filter shaping unit includes capacitors C31, C32, C33, and C34, resistors R4, R5, R6, R7, R39, and R40, and transistor Q3.

[0057] The first terminal of capacitor C31, the first terminals of resistors R4 and R5, and the base of transistor Q3 are connected to the second terminal of capacitor C3. The second terminals of capacitor C31 and resistor R5 are connected to ground. The second terminal of resistor R4 is connected to the 5V operating voltage. The first terminals of resistor R39 and capacitor C32 are connected to the 5V operating voltage. The second terminals of resistor R39, capacitor C32, and resistor R40 are connected to the collector of transistor Q3. The emitter of transistor Q3 is connected to ground through a filter circuit composed of resistors R6, R7, and capacitor C33. The second terminal of resistor R40 and the first terminal of capacitor C34 are connected to the comparator unit. The second terminal of capacitor C34 is connected to ground.

[0058] The comparison unit includes comparator U6A. The non-inverting input of comparator U6A is connected to a reference voltage, which can be generated by dividing the 5V operating voltage through resistors R41 and R42. The inverting input of comparator U6A is connected to the first terminal of capacitor C34. The output of comparator U6A is connected to the output module to generate a received signal.

[0059] The high-frequency carrier signal on the two-wire bus is isolated by capacitor C3 and transmitted to the back end. It controls the switching of transistor Q3, thereby changing the voltage at the inverting input of comparator U6A, so that comparator UA6 outputs the corresponding received signal. The control module 10 obtains the information sent by the home appliance based on the received signal.

[0060] like Figure 4 As shown, the transmitting unit 41 includes a resistor unit and a switching unit. The resistor unit and the switching unit are connected in series between the rectifier module 20 and the ground voltage. The switching unit is connected to the control module 10 to modulate the current on the rectifier bridge by turning it on or off based on the control of the control module 10.

[0061] For example, the resistor unit includes resistor R1, with its first terminal connected to node N1 and its second terminal connected to ground via a switching unit. The switching unit includes transistors R1 and R2, resistor R2, and resistor R3. The collector of transistor Q1 is connected to the second terminal of resistor R1, the base of transistor Q1 is connected to the first terminals of resistors R3 and R2, the second terminal of resistor R3 is connected to ground, the second terminal of resistor R2 is connected to the collector of transistor Q2, the emitter of transistor Q2 is connected to a 5V operating voltage, and the base of transistor Q2 is connected to the control module 10 via its internal resistance.

[0062] The control module 10 controls the switching on and off of transistor Q2, thereby changing the base voltage of transistor Q1 and thus controlling the switching on and off of transistor Q1, forming a path to ground at node N1 and achieving current loop modulation. Information is then sent to the home appliances by adjusting the current magnitude.

[0063] like Figure 5 As shown, the button module 61 includes a button group, a sensor chip U3, and its peripheral circuitry. The sensor chip U3 is used to sense the button status and generate corresponding button input signals.

[0064] For example, the button group can correspond to the switch, air volume, temperature, function settings, etc., to realize multi-functional control of home appliances (such as air conditioners, fresh air systems, floor heating, etc.).

[0065] like Figure 6As shown, in one embodiment, the control module 10 is connected to the WIFI module 62 via an optical coupler module. The optical coupler module includes an optical coupler chip U7, an optical coupler chip U8, and their peripheral circuitry. The WIFI module 62 can be any existing WIFI module.

[0066] For example, the WIFI module 62 can be used to establish interconnection with user-end APP, mini-program, and cloud system, enabling users to freely control home appliances through mobile terminals such as mobile phones, greatly improving flexibility.

[0067] like Figure 7 As shown, the infrared receiving module 63 includes an infrared receiver head U7 and its peripheral circuitry. The infrared receiver head U7 is connected to the control module 10 via its peripheral circuitry to transmit the received infrared signal to the control module 10.

[0068] For example, a user can send an infrared signal to the infrared receiver module 63 via a remote control to achieve remote control.

[0069] like Figure 8 As shown, the temperature sensing module 50 includes a thermistor TH1, a resistor R64, a resistor R61, and a capacitor C37. The first terminal of the thermistor TH1 is connected to a 5V operating voltage. The second terminal of the thermistor TH1 is connected to the first terminals of resistors R61 and R64. The second terminal of resistor R61 and the first terminal of capacitor C37 are connected to the control module 10 to generate a temperature sensing signal. The second terminals of resistor R64 and capacitor C37 are connected to ground.

[0070] like Figure 9 As shown, the lighting module 71 includes LED1, LED2, transistor Q5, transistor Q6, resistor R25, resistor R28, resistor R29, resistor R62, and resistor R63.

[0071] The cathode of LED2 is connected to the control module 10, and the anode of LED2 is connected to the operating voltage through resistor R25. LED2 is controlled by the control module 10 to emit light for indication.

[0072] The anode of LED1 is connected to the operating voltage. The cathode of LED1 is connected to ground through resistor R28 and transistor Q5, and through resistor R62 and transistor Q6. The base of transistor Q5 is connected to control module 10 through resistor R29, and the base of transistor Q6 is connected to control module 10 through resistor R63. Transistors Q5 and Q6 are controlled by control module 10 to turn on or off, thereby controlling LED1 to emit light. For example, LED1 can be used as a backlight module.

[0073] like Figure 10 As shown, the liquid crystal display module 72 includes a liquid crystal module LCD1, which is connected to the control module 10 and controlled by the control module 10 to perform liquid crystal display. The liquid crystal module LCD1 can be any existing liquid crystal module.

[0074] like Figure 11 As shown, the buzzer module includes a buzzer BUZ, resistors R30, R31, and R45, and a transistor Q4. The first terminal of the buzzer BUZ and the first terminal of resistor R30 are connected to a 5V operating voltage. The second terminal of the buzzer BUZ and the second terminal of resistor R30 are connected to the collector of transistor Q4. The emitter of transistor Q4 and the first terminal of resistor R45 are connected to ground. The base of transistor Q4 and the second terminal of resistor R45 are connected to control module 10 through resistor R31. Transistor Q4 is controlled by control module 10 to turn on or off, thereby controlling the buzzer to sound an alarm.

[0075] like Figure 12 As shown, the storage module 80 includes a storage chip U2 and its peripheral circuits. The storage chip U2 is connected to the control module 10 through its peripheral circuits to store data.

[0076] like Figure 13 As shown, the control module 10 includes a control chip U1 and its peripheral circuitry. The preferred model of the control chip U1 is R7F0C004M2DFB.

[0077] Pin 18 of control chip U1 is connected to power module 30 to receive operating voltage. Pin 6 of control chip U1 is connected to the output of comparator U6A in receiving unit 42 to receive received signals. Pin 7 of control chip U1 is connected to the base of transistor Q2 in transmitting unit 41 to control it.

[0078] Pins 71 and 72 of control chip U1 are connected to sensor chip U3 to receive button input signals. Pins 64 and 65 of control chip U1 are connected to WIFI module 62 through optocoupler chips U7 and U8 respectively to receive WIFI signals. Pin 13 of control chip U1 is connected to infrared receiver U7 to receive infrared signals. Pin 79 of control chip U1 is connected to the second terminal of resistor R61 in temperature sensing module 50 to receive temperature sensing signals.

[0079] Pins 21, 22, and 26 of control chip U1 are connected to resistor R63, the cathode of LED2, and resistor R29 in lighting module 71, respectively, to control LED1 and LED2 to emit light. Pin 63 of control chip U1 is connected to resistor R31 in buzzer module to control buzzer BUZ to sound. Pins 19 and 20 of control chip U1 are connected to memory chip U2 to store data. Pins 27-62 and 66-70 of control chip U1 are connected to LCD module LCD1 to control LCD module LCD1 to perform liquid crystal display.

[0080] This embodiment also provides a wired controller, including a circuit board with the above-described control system for home appliances.

[0081] In practical applications, users can send control commands to the control system via button input, infrared remote control, WIFI, etc. After the control chip U1 establishes communication with home appliances (such as air conditioners, fresh air systems, and underfloor heating), it transmits the commands to the home appliances to achieve control. This control system also adds a temperature sensing module 50, which can actively monitor the temperature, improving the system's initiative and remote control capabilities.

[0082] The control system and home appliances achieve power supply and communication via a two-wire system. Only two wires are needed to transmit power and signals simultaneously, reducing cable usage and interface complexity, and lowering installation and maintenance costs. This is particularly suitable for long-distance or complex layout scenarios. Modulation and demodulation technology distinguishes between signals and power, effectively suppressing electromagnetic interference and ensuring stable data transmission. This control system is highly compatible with other devices; for example, multiple control systems can be integrated onto a single bus, supporting future functional expansion or system upgrades.

[0083] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0084] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A control system for household appliances, characterized in that, It includes a control module, a rectifier module, a communication module, and a button module. The rectifier module is connected to the two-wire bus of the home appliance to rectify the bus voltage to generate a power supply voltage. The button module is connected to the control module to generate button input signals. The control module is connected to the rectifier module through the communication module to communicate with the home appliance based on the two-wire system and control the home appliance based on the button input signals.

2. The control system for household appliances according to claim 1, characterized in that, The communication module includes a receiving unit and a transmitting unit. The receiving unit is connected to the rectifier module and the control module to generate a received signal based on a carrier signal on a two-wire bus. The transmitting unit is connected to the control module and the rectifier module to modulate the current on the rectifier bridge based on the control of the control module.

3. The control system for household appliances according to claim 2, characterized in that, The receiving unit includes an isolation unit and a comparison unit. The isolation unit is connected to the rectification module and the comparison unit to isolate the transmission of the carrier signal. The comparison unit is connected to the reference voltage and the control module to compare the carrier signal and the reference voltage to generate a received signal.

4. The control system for household appliances according to claim 3, characterized in that, The receiving unit further includes a filtering and shaping unit, which is connected to the isolation unit and the comparison unit to filter and shape the carrier signal.

5. The control system for household appliances according to claim 2, characterized in that, The transmitting unit includes a resistor unit and a switching unit, which are connected in series between the rectifier module and the ground voltage. The switching unit is connected to the control module to modulate the current on the rectifier bridge by turning it on or off based on the control of the control module.

6. The control system for household appliances according to claim 1, characterized in that, The control system also includes a power supply module, which is connected to the rectifier module and the control module to convert the power supply voltage into the operating voltage required by the control module.

7. The control system for household appliances according to claim 6, characterized in that, The power module includes an LDO unit or a DC-DC converter unit.

8. The control system for household appliances according to claim 1, characterized in that, The control system further includes an infrared receiving module, the control module being connected to the infrared receiving module to receive infrared signals and control home appliances based on the infrared signals; and / or The control system further includes a WIFI module, which is connected to the control module to receive WIFI signals and control home appliances based on the WIFI signals; and / or The control system also includes a temperature sensing module, which generates temperature sensing signals. The control module is connected to the temperature sensing module to control the home appliances based on the temperature sensing signals.

9. The control system for household appliances according to claim 1, characterized in that, The control system further includes a lighting module connected to the control module to emit light based on the control of the control module; and / or The control system further includes a storage module connected to the control module to store data; and / or The control system further includes a liquid crystal display module, which is connected to the control module to display information based on the control of the control module; and / or The control system also includes a buzzer module, which is connected to the control module to sound a buzzer based on the control of the control module.

10. A wired controller, characterized in that, Includes a circuit board having a control system for a household appliance as described in any one of claims 1 to 9.

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