Multifunctional electric sofa control circuit powered by power bank

Abstract

The utility model discloses a multifunctional electric sofa control circuit powered by a power bank. Comprising a power bank, a power receiving chip circuit, a DC-DC conversion circuit, an LDO circuit, an MCU, a sofa extension or contraction control circuit, a headrest extension or contraction control circuit, a ventilation control circuit, an air bag control circuit, a vibration massage circuit, an LED lamp control circuit, a Bluetooth sound box power supply circuit and a heating pad control circuit. The power receiving chip circuit converts electricity output by the power bank into first direct current, the first direct current passes through the DC-DC conversion circuit and then outputs second direct current, and the second direct current is further connected with the LDO chip circuit and outputs third direct current to supply power to the MCU. According to the utility model, all functional circuit modules can be controlled in a centralized manner, and the integration degree is high; the first direct current supplies power to the first motor and the second motor, the second direct current supplies power to other functional modules, the control circuit is simplified, the stability of the control circuit is improved, and various functions can meet various requirements of users.

Description

Technical Field

[0001] This utility model relates to the field of electric sofa technology, and in particular to a multifunctional electric sofa control circuit powered by a power bank. Background Technology

[0002] Sofas typically include a sofa support frame and components such as a seat, backrest, and footrest mounted on the support frame. In the current technology, the structure of sofa support frames is usually relatively simple and the position is fixed, making it difficult to modify and use according to the user's needs. This results in certain limitations in use and causes inconvenience to people.

[0003] With the advancement of technology, people have gradually added functions such as electric extension or retraction and massage to sofas. However, the current sofa control circuits often have the following technical problems: (1) The electric extension or retraction of the sofa is often controlled by a separate control circuit and its switch button. It is usually not integrated with the control circuit of massage and other functions, and the degree of integration is not high enough; (2) The power supply voltage used by the electric extension or retraction and massage function modules of the sofa is often not uniform. The sofa control circuit needs to convert and output different voltages to power the electric extension or retraction and massage function modules of the sofa, which increases the complexity of the sofa control circuit and makes the stability of the sofa control circuit not high enough; (3) The functions of the control circuit are not rich enough. It cannot simultaneously support the sofa extension or retraction function, headrest extension or retraction function, ventilation function, airbag massage function, vibration massage function, LED light ambient function, Bluetooth speaker function and heating pad function, which makes it difficult to meet the various needs of users. Utility Model Content

[0004] The technical problem this invention aims to solve is to address the shortcomings of the existing technology by providing a multi-functional electric sofa control circuit powered by a power bank. This control circuit allows for centralized control of all functional modules, exhibiting a high degree of integration. It uses a first DC power supply to power the first and second motors, and a second DC power supply to power the ventilation fan, massage airbags, vibrator, LED lights, Bluetooth speaker, and heating pad. The simplified control circuit design improves its stability. Furthermore, this control circuit simultaneously supports sofa extension / retraction, headrest extension / retraction, ventilation, airbag massage, vibration massage, LED ambient lighting, Bluetooth speaker functionality, and heating pad functionality, meeting various user needs.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a multi-functional electric sofa control circuit powered by a power bank, including a power bank, a power receiving chip circuit, a DC-DC conversion circuit, an LDO circuit, an MCU, a sofa extension or retraction control circuit, a headrest extension or retraction control circuit, a ventilation control circuit, an airbag control circuit, a vibration massage circuit, an LED light control circuit, a Bluetooth speaker power supply circuit, and a heating pad control circuit; the power receiving chip circuit converts the electricity output from the power bank into a first DC current, which powers the sofa extension or retraction control circuit and the headrest extension or retraction control circuit; the first DC current is then converted into a second DC current by the DC-DC conversion circuit, which powers the ventilation control circuit and the airbag control circuit respectively. The system provides power to the airbag control circuit, vibration massage circuit, LED light control circuit, Bluetooth speaker power supply circuit, and heating pad control circuit. The second DC power supply is also connected to an LDO chip circuit, which converts the second DC power supply into a third DC power supply, which then powers the MCU. The MCU is electrically connected to the sofa extension / retraction control circuit, headrest extension / retraction control circuit, ventilation control circuit, airbag control circuit, vibration massage circuit, LED light control circuit, Bluetooth speaker power supply circuit, and heating pad control circuit, and controls the operation of these circuits.

[0006] Preferably, the power receiving chip circuit includes a USB Type-C interface and a power receiving chip. The power bank is plugged into the USB Type-C interface, and the power bank outputs DC power to the power receiving chip through the USB Type-C interface. The power receiving chip converts the DC power output by the power bank into a first DC power of 15V. The second DC power output by the DC-DC conversion circuit is 12V, and the third DC power output by the LDO chip circuit is 5V.

[0007] Preferably, the MCU is electrically connected to a key signal input circuit, which has multiple keys for inputting control commands to the MCU.

[0008] Preferably, the MCU is electrically connected to a wireless signal receiving circuit, which includes a SYN590 RF receiver chip and an antenna.

[0009] Preferably, the control circuit further includes a voice input module, which is plugged into and powered by a power bank; the voice input module is wirelessly connected to a wireless signal receiving circuit.

[0010] Preferably, the control circuit further includes a Darlington driver chip, which is connected between the MCU and the sofa extension or retraction control circuit, the Bluetooth speaker power supply circuit, and the headrest extension or retraction control circuit. The sofa extension or retraction control circuit is electrically connected to a first motor and includes a first relay and a second relay. The control signal output by the MCU to the sofa extension or retraction control circuit is amplified by the Darlington driver chip and then controls the first and second relays to operate. The first and second relays then control the first motor to extend or retract the sofa. The Bluetooth speaker power supply circuit is connected to... The device includes a Bluetooth speaker. The Bluetooth speaker power supply circuit has a third relay. The control signal output by the MCU to the Bluetooth speaker power supply circuit is amplified by the Darlington driver chip and controls the third relay to work, which in turn controls the Bluetooth speaker. The headrest extension or retraction control circuit is electrically connected to a second motor. The headrest extension or retraction control circuit has a fourth relay and a fifth relay. The control signal output by the MCU to the headrest extension or retraction control circuit is amplified by the Darlington driver chip and controls the fourth relay and the fifth relay to work, which in turn controls the second motor to work, thereby controlling the extension or retraction of the headrest.

[0011] Preferably, the control circuit further includes a first current sensing amplifier and a second current sensing amplifier. The current signals of the first and second relays of the sofa extension or retraction control circuit are sensed and amplified by the first current sensing amplifier and then fed back to the MCU in real time. The current signals of the fourth and fifth relays of the headrest extension or retraction control circuit are sensed and amplified by the second current sensing amplifier and then fed back to the MCU in real time.

[0012] Preferably, the airbag control circuit includes a forward / reverse chip and a massage airbag. The control signal output by the MCU to the airbag control circuit is passed through the forward / reverse chip to control the massage airbag to inhale or deflate.

[0013] Preferably, the ventilation control circuit includes a first transistor, a first MOSFET, and a fan. The control signal output by the MCU to the ventilation control circuit passes through the first transistor and the first MOSFET to control the fan. The vibration massage circuit includes a second transistor, a second MOSFET, and a vibration massager. The control signal output by the MCU to the vibration massage circuit passes through the second transistor and the second MOSFET to control the vibration massager. The heating pad control circuit includes a third transistor, a third MOSFET, and a heating pad. The control signal output by the MCU to the heating pad control circuit passes through the third transistor and the third MOSFET to control the heating pad.

[0014] Preferably, the LED light control circuit includes an LED strip control circuit and an LED lamp holder control circuit; the LED strip control circuit includes a fourth transistor, a fourth MOSFET, and an LED strip, and the control signal output by the MCU to the LED strip control circuit controls the LED strip to work after passing through the fourth transistor and the fourth MOSFET; the LED lamp holder control circuit includes a fifth transistor, a fifth MOSFET, and an LED lamp holder, and the control signal output by the MCU to the LED lamp holder control circuit controls the LED lamp holder to work after passing through the fifth transistor and the fifth MOSFET.

[0015] The beneficial effects of this utility model are: (1) Since the MCU is electrically connected to the headrest extension or retraction control circuit, ventilation control circuit, airbag control circuit, vibration massage circuit, LED light control circuit, Bluetooth speaker power supply circuit and heating pad control circuit respectively, and controls the headrest extension or retraction control circuit, ventilation control circuit, airbag control circuit, vibration massage circuit, LED light control circuit, Bluetooth speaker power supply circuit and heating pad control circuit to work, this utility model can realize that all functional modules of the sofa are centrally controlled by the MCU, and the degree of integration is high; (2) Since the second DC power output from the DC-DC conversion circuit is directed to the headrest extension or retraction control circuit, ventilation control circuit, airbag control circuit, vibration massage circuit, and heating pad control circuit respectively, this utility model can realize that all functional modules of the sofa are centrally controlled by the MCU, and the degree of integration is high; The LED light control circuit, Bluetooth speaker power supply circuit and heating pad control circuit are powered. Therefore, this utility model can use the first DC power to power the first motor and the second motor, and use the second DC power to power the ventilation fan, massage airbag, vibrator, LED light, Bluetooth speaker and heating pad, which simplifies the control circuit and improves the stability of the control circuit; (3) Since the second DC power is also connected to the LDO chip circuit, the second DC power is converted into the third DC power through the LDO chip circuit, which can ensure stable power supply to the MCU; (4) It supports the sofa extension or retraction function, the headrest extension or retraction function, the ventilation function, the airbag massage function, the vibration massage function, the LED light ambient function, the Bluetooth speaker function and the heating pad function, which can meet the various needs of users. Attached Figure Description

[0016] Figure 1 This is a block diagram of the circuit architecture of this utility model.

[0017] Figure 2 This is a circuit diagram of the power receiving chip circuit, DC-DC conversion circuit, MCU, ventilation control circuit and key signal input circuit of this utility model.

[0018] Figure 3The circuit diagrams are for the sofa extension or retraction control circuit, Bluetooth speaker power supply circuit, airbag control circuit, first current sensing amplifier, vibration massage circuit, LED light strip control circuit, LED lamp cup control circuit, and wireless signal receiving circuit of this utility model.

[0019] Figure 4 The circuit diagram shows the headrest extension or retraction control circuit, the second current sensing amplifier, the heating pad control circuit, the LDO circuit, and the Darlington driver chip of this utility model. Detailed Implementation

[0020] The structural and working principles of this utility model will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-4As shown, this utility model is a multi-functional electric sofa control circuit powered by a power bank, including a power bank 1, a power receiving chip circuit 27, a DC-DC conversion circuit 2, an LDO circuit 3, an MCU 4, a sofa extension or retraction control circuit 5, a headrest extension or retraction control circuit 22, a ventilation control circuit 6, an airbag control circuit 7, a vibration massage circuit 8, an LED light control circuit, a Bluetooth speaker power supply circuit 9, and a heating pad control circuit 23. The power receiving chip circuit 27 converts the electricity output from the power bank 1 into a first DC current, which powers the sofa extension or retraction control circuit 5 and the headrest extension or retraction control circuit 22. The first DC current is then converted into a second DC current by the DC-DC conversion circuit 2, which powers the ventilation control circuit 6, the airbag control circuit 7, the vibration massage circuit 8, the LED light control circuit 9, the Bluetooth speaker power supply circuit 9, and the heating pad control circuit 23. The massage circuit 8, LED light control circuit, Bluetooth speaker power supply circuit 9, and heating pad control circuit 23 are powered; the second DC power is also connected to the LDO chip circuit 3, and the second DC power is converted into a third DC power through the LDO chip circuit 3, which powers the MCU4; the MCU4 is electrically connected to the sofa extension or retraction control circuit 5, headrest extension or retraction control circuit 22, ventilation control circuit 6, airbag control circuit 7, vibration massage circuit 8, LED light control circuit, Bluetooth speaker power supply circuit 9, and heating pad control circuit 23, and controls the operation of the sofa extension or retraction control circuit 5, headrest extension or retraction control circuit 22, ventilation control circuit 6, airbag control circuit 7, vibration massage circuit 8, LED light control circuit, Bluetooth speaker power supply circuit 9, and heating pad control circuit 23. This invention enables centralized control of all functional modules of the sofa by an MCU, achieving a high degree of integration. It can use a first DC power supply to power the first and second motors, and a second DC power supply to power the ventilation fan, massage airbags, vibrator, LED lights, Bluetooth speaker, and heating pad, simplifying the control circuit and improving its stability. Furthermore, because the second DC power supply is also connected to an LDO chip circuit, it is converted into a third DC power supply, ensuring a stable power supply to the MCU. This invention simultaneously supports sofa extension / retraction, headrest extension / retraction, ventilation, airbag massage, vibration massage, LED ambient lighting, Bluetooth speaker, heating pad, and USB socket functions, meeting various user needs.

[0022] like Figure 1 , Figure 2 and Figure 4As shown, the MCU chip model is FT62F288E-LRB. The power receiving chip circuit 27 includes a USB Type-C interface and a power receiving chip U1. The power bank 1 is plugged into the USB Type-C interface, and the power bank 1 outputs DC power to the power receiving chip U1 through the USB Type-C interface. The power receiving chip U1 converts the DC power output by the power bank 1 into a first DC power of 15V. The DC-DC conversion circuit includes a DC-DC conversion chip U3, and the second DC power output by the DC-DC conversion circuit is 12V. The LDO chip circuit includes an LDO chip circuit U4, and the third DC power output by the LDO chip circuit is 5V.

[0023] like Figure 1 and Figure 2 As shown, the MCU is electrically connected to a button signal input circuit. The button signal input circuit 11 is equipped with multiple buttons for inputting control commands to the MCU. The buttons include buttons S1, S2, S3, S4, S5, S6, S7, S8, and S9.

[0024] like Figures 1-3 As shown, the MCU is electrically connected to a wireless signal receiving circuit 24, which includes a SYN590 RF receiver chip U9 and an antenna ANT connected to the SYN590 RF receiver chip U9.

[0025] In a preferred embodiment of this invention, the control circuit further includes a voice input module 12, which is plugged into and powered by a power bank 1; the voice input module 12 is wirelessly connected to a wireless signal receiving circuit 24. Through the voice input module 12, voice can be used to control the sofa's extension or retraction, the headrest's extension or retraction, massage, ventilation, airbag opening and closing, and heating functions. Voice can also be used to control the voice module 12 to perform functions such as telling stories to the user and playing e-books.

[0026] like Figures 1-4As shown, the control circuit also includes a Darlington driver chip U6, model ULN2002D. The Darlington driver chip U6 is connected between the MCU and the sofa extension / retraction control circuit 5, the Bluetooth speaker power supply circuit 9, and the headrest extension / retraction control circuit 22. The sofa extension / retraction control circuit 5 is electrically connected to a first motor 13. The sofa extension / retraction control circuit 5 has a first relay REY1 and a second relay REY2. The control signal output by the MCU to the sofa extension / retraction control circuit is amplified by the Darlington driver chip U6, controlling the first relay REY1 and the second relay REY2 to operate. The first relay REY1 and the second relay REY2 then control the first motor 13 to operate, thereby controlling the extension or retraction of the sofa. The sofa extension or retraction refers to the extension or retraction of the seat and footrest. The Bluetooth speaker power supply circuit 9 is connected to the Bluetooth speaker 14. The Bluetooth speaker power supply circuit 9 is equipped with a third relay REY3. The control signal output by the MCU to the Bluetooth speaker power supply circuit 9 is amplified by the Darlington driver chip U6 and controls the third relay REY3 to work. The third relay REY3 then controls the Bluetooth speaker 14 to work. The headrest extension or retraction control circuit 22 is electrically connected to the second motor 25. The headrest extension or retraction control circuit 22 is equipped with a fourth relay REY4 and a fifth relay REY5. The control signal output by the MCU to the headrest extension or retraction control circuit 22 is amplified by the Darlington driver chip U6 and controls the fourth relay REY4 and the fifth relay REY5 to work. The fourth relay REY4 and the fifth relay REY5 then control the second motor 25 to work, thereby controlling the extension or retraction of the headrest. The control circuit also includes a first current sensing amplifier U7 and a second current sensing amplifier U8. The current signals from the first relay REY1 and the second relay REY2 of the sofa extension or retraction control circuit are sensed and amplified by the first current sensing amplifier U7 and then fed back to the MCU in real time. The current signals from the fourth relay REY4 and the fifth relay REY5 of the headrest extension or retraction control circuit 22 are sensed and amplified by the second current sensing amplifier U8 and then fed back to the MCU in real time. This allows the MCU to sense the extension or retraction position of the first motor 13 and the second motor 25 in real time. Both the first current sensing amplifier U7 and the second current sensing amplifier U8 use TP181A2 chips. The first motor 13 and the second motor 25 have built-in Hall effect sensors, which can precisely control the extension or retraction position of the sofa and the headrest. They can also memorize the extension or retraction position of the sofa and headrest, and enable one-button operation to extend to the maximum or retract to the original position (one-button reset).

[0027] like Figure 2 and Figure 3As shown, the airbag control circuit 7 includes a forward / reverse chip U5 and a massage airbag 16. The control signal output by the MCU to the airbag control circuit is controlled by the forward / reverse chip U5 to control the massage airbag 16 to inhale or deflate.

[0028] like Figures 2-4 As shown, the ventilation control circuit 6 includes a first transistor Q1, a first MOSFET Q4, and a fan 15. The control signal output by the MCU to the ventilation control circuit passes through the first transistor Q1 and the first MOSFET Q4 to control the fan 15. The vibration massage circuit 8 includes a second transistor Q6, a second MOSFET Q3, and a vibration massager 17. The control signal output by the MCU to the vibration massage circuit 8 passes through the second transistor Q6 and the second MOSFET Q3 to control the vibration massager 17. The heating pad control circuit 23 includes a third transistor Q10, a third MOSFET Q11, and a heating pad 26. The control signal output by the MCU to the heating pad control circuit 23 passes through the third transistor Q10 and the third MOSFET Q11 to control the heating pad 26.

[0029] like Figure 2 and Figure 3 As shown, the LED light control circuit includes an LED strip control circuit 18 and an LED lamp holder control circuit 19. The LED strip control circuit 18 includes a fourth transistor Q7, a fourth MOSFET Q9, and an LED strip 20. The control signal output by the MCU to the LED strip control circuit passes through the fourth transistor Q7 and the fourth MOSFET Q9 to control the LED strip 20 to work. The LED strip 20 can emit white light and seven-color light. The LED lamp holder control circuit includes a fifth transistor Q2, a fifth MOSFET Q8, and an LED lamp holder 21. The control signal output by the MCU to the LED lamp holder control circuit passes through the fifth transistor Q2 and the fifth MOSFET Q8 to control the LED lamp holder 21 to work. The LED lamp holder 21 can emit white light and seven-color light and can be used as an ashtray.

[0030] The above description is merely a preferred embodiment of this utility model. Any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical solution of this utility model shall fall within the scope of the technical solution of this utility model.

Claims

1. A multi-functional electric sofa control circuit powered by a power bank, characterized in that: The power bank, the power-receiving chip circuit, the DC-DC conversion circuit, the LDO circuit, the MCU, the sofa stretching or retracting control circuit, the headrest stretching or retracting control circuit, the ventilation control circuit, the air bag control circuit, the vibration massage circuit, the LED lamp control circuit, the Bluetooth audio power supply circuit and the heating pad control circuit are connected with each other.

2. The multifunctional electric sofa control circuit powered by the power bank according to claim 1, characterized in that: The power-receiving chip circuit includes a USB TYPE C interface and a power-receiving chip, the power bank is connected with the USB TYPE C interface, the power bank outputs direct current to the power-receiving chip through the USB TYPE C interface, and the power-receiving chip converts the direct current output by the power bank into first direct current with a voltage of 15 V.

3. The multifunctional electric sofa control circuit powered by the power bank according to claim 1, characterized in that: The MCU is electrically connected with a key signal input circuit, the key signal input circuit is provided with a plurality of keys and is used for inputting control commands to the MCU.

4. The multifunctional electric sofa control circuit powered by the power bank according to claim 1, characterized in that: The MCU is electrically connected with a wireless signal receiving circuit, the wireless signal receiving circuit includes a SYN590 radio frequency receiving chip, and the SYN590 radio frequency receiving chip is connected with an antenna.

5. The multifunctional electric sofa control circuit powered by the power bank according to claim 4, characterized in that: The control circuit further includes a voice input module, the voice input module is connected with the power bank and is powered by the power bank, and the voice input module is wirelessly connected with the wireless signal receiving circuit.

6. The multi-functional electric sofa control circuit powered by the power bank according to claim 1, characterized in that: The control circuit further comprises a Darlington drive chip connected between the MCU and the sofa stretching or retracting control circuit, the Bluetooth sound supply circuit and the headrest stretching or retracting control circuit; the sofa stretching or retracting control circuit is electrically connected with a first motor, and is provided with a first relay and a second relay; the control signal output by the MCU to the sofa stretching or retracting control circuit is amplified by the Darlington drive chip, and then controls the first relay and the second relay to work, and then controls the first motor to work through the first relay and the second relay, so as to control the sofa to stretch or retract; the Bluetooth sound supply circuit is connected with a Bluetooth sound, and is provided with a third relay; the control signal output by the MCU to the Bluetooth sound supply circuit is amplified by the Darlington drive chip, and then controls the third relay to work, and then controls the Bluetooth sound to work through the third relay; the headrest stretching or retracting control circuit is electrically connected with a second motor, and is provided with a fourth relay and a fifth relay; the control signal output by the MCU to the headrest stretching or retracting control circuit is amplified by the Darlington drive chip, and then controls the fourth relay and the fifth relay to work, and then controls the second motor to work through the fourth relay and the fifth relay, so as to control the headrest to stretch or retract.

7. The multifunctional electric sofa control circuit powered by the power bank according to claim 1, characterized in that: The control circuit further comprises a first current sensing amplifier and a second current sensing amplifier; the current signals of the first relay and the second relay of the sofa stretching or retracting control circuit are sensed and amplified by the first current sensing amplifier, and then fed back to the MCU in real time; the current signals of the fourth relay and the fifth relay of the headrest stretching or retracting control circuit are sensed and amplified by the second current sensing amplifier, and then fed back to the MCU in real time.

8. The multi-functional electric sofa control circuit powered by the power bank according to claim 1, characterized in that: The air bag control circuit comprises a positive and negative conversion chip and a massage air bag; the control signal output by the MCU to the air bag control circuit is converted by the positive and negative conversion chip, and then controls the massage air bag to inhale or exhale.

9. The multi-functional electric sofa control circuit powered by the power bank according to claim 1, characterized in that: The ventilation control circuit comprises a first triode, a first MOS tube and a fan; the control signal output by the MCU to the ventilation control circuit is converted by the first triode and the first MOS tube, and then controls the fan to work; the vibration massage circuit comprises a second triode, a second MOS tube and a vibration massager; the control signal output by the MCU to the vibration massage circuit is converted by the second triode and the second MOS tube, and then controls the vibration massager to work; the heating pad control circuit comprises a third triode, a third MOS tube and a heating pad; the control signal output by the MCU to the heating pad control circuit is converted by the third triode and the third MOS tube, and then controls the heating pad to work.

10. The multifunctional electric sofa control circuit powered by the power bank according to claim 1, characterized in that: The LED lamp control circuit comprises an LED lamp strip control circuit and an LED lamp cup control circuit; the LED lamp strip control circuit comprises a fourth triode, a fourth MOS tube and an LED lamp strip; the control signal output by the MCU to the LED lamp strip control circuit passes through the fourth triode and the fourth MOS tube, and then controls the operation of the LED lamp strip; the LED lamp cup control circuit comprises a fifth triode, a fifth MOS tube and an LED lamp cup; the control signal output by the MCU to the LED lamp cup control circuit passes through the fifth triode and the fifth MOS tube, and then controls the operation of the LED lamp cup.

Images