Low-power-consumption power supply circuit and massage chair

Abstract

The utility model relates to the technical field of massage armchair control, and provides a low power consumption power supply circuit and a massage armchair, the low power consumption power supply circuit comprises a main control module, a conversion module, a starting module and a first load interface, the starting module is contacted between the main control module and the first load interface, the starting module is connected in series between the first load interface and a power supply input end; after the master control module is powered on, the master control module drives the starting module to conduct or cut off a power supply loop between the first load interface and the power input end so as to supply power to the load, and when the load is in an idle state, the master control module cuts off the power supply loop between the first load interface and the power input end so as to supply power to the load. Therefore, the standby time power consumption of the massage chair load is greatly reduced, the standby short circuit risk is reduced, and the circuit safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of massage chair control, in particular to a low-power supply circuit and a massage chair. Background Technique

[0002] The principle of a massage chair is to use the rolling force of a machine and mechanical force extrusion for massage. Manual massage can dredge the meridians, promote blood circulation, and maintain the balance of yin and yang in the body. Therefore, after massage, one can feel the muscles relax, joints become flexible, be refreshed, eliminate fatigue, and play an important role in ensuring good health.

[0003] The low-power design of a massage chair is an important consideration. During the product development process, not only is it necessary to cut off the external power supply to let the product enter the low-power mode, but also it is necessary to ensure that when the product enters the low-power mode, it can be normally awakened from the low-power mode without affecting the user experience. However, the existing power supply circuit of a massage chair is still connected to the power supply when the load is not working and is in a standby state, with a large standby power consumption; and when in standby, if there is a short circuit in the load, there is a potential safety hazard of causing a fire. Summary of the Invention

[0004] The utility model provides a low-power supply circuit and a massage chair, which solve the technical problems of large standby power consumption and potential safety hazards of the existing power supply circuit of a massage chair.

[0005] To solve the above technical problems, the utility model provides a low-power supply circuit, which includes a main control module, a conversion module, a startup module, and a first load interface. The input end of the conversion module and the input end of the startup module are connected to the power input end. The output end of the conversion module is connected to the power supply ends of the main control module and the startup module. The main control module is connected to the trigger end of the startup module. The output end of the startup module is connected to the input end of the first load interface.

[0006] In this basic solution, a startup module is connected between the main control module and the first load interface. The startup module is connected in series between the first load interface and the power input end. After the main control module is powered on, the main control module drives the startup module to conduct or cut off the power supply circuit between the first load interface and the power input end to supply power to the load. When the load is in an idle state, the main control module cuts off the power supply circuit between the first load interface and the power input end, thereby greatly reducing the power consumption of the massage chair load during standby time, reducing the short-circuit risk during standby, and improving the circuit safety.

[0007] In a further embodiment, the startup module includes an isolation module and a switch module; one end of the isolation module is connected to the output end of the conversion module as a power supply end, the other end is connected to the main control module as a trigger end, and its output end is connected to the control end of the switch module; the input end of the switch module is connected to the power input end, and the output end is connected to the first load interface.

[0008] In a further embodiment, the isolation module includes a first resistor R1 and an optocoupler U1; pin 1 of the optocoupler U1 is connected to one end of the first resistor R1, pin 2 is connected to the main control module as a trigger end, pin 4 is connected to the control end of the switch module as an output end, and pin 6 is connected to the input end of the switch module; the other end of the first resistor R1 is connected to the output end of the conversion module as a power supply end.

[0009] This solution sets an optocoupler for isolated startup control, which can completely isolate between the input and the output, effectively avoid interference between circuits, and can effectively prevent damage to the input end by the reverse voltage at the output end, thus protecting the safety of the entire circuit.

[0010] In a further embodiment, the switch module includes a triac Q1, a second resistor R2, a third resistor R3, a fourth resistor R4, and a fifth resistor R5. The T2 pole of the triac Q1 is connected to the power input end, the T1 pole is connected to the first load interface, and the control pole is connected to pin 4 of the optocoupler U1 through the fifth resistor R5; both ends of the second resistor R2 are respectively connected to the T1 pole and the T2 pole; both ends of the third resistor R3 are respectively connected to pin 6 of the optocoupler U1 and the T2 pole; both ends of the fourth resistor R4 are respectively connected to the T1 pole and the control pole.

[0011] In this solution, a triac Q1 is connected in series between the first load interface and the power input end. By changing the trigger end signal at the input end through the main control module, the on and off control of the triac can be realized, and then the control of the load power supply circuit can be realized. The control is flexible and reliable, and the reverse voltage suppression ability is strong.

[0012] In a further embodiment, a first filtering module is further included and connected in series between the power input end and the conversion module. The first filtering module includes a sixth resistor R6, a first capacitor C1, and a common mode inductor L1. Both ends of the sixth resistor R6 are respectively connected to the live wire and the neutral wire of the power input end, and the first capacitor C1 is connected in parallel with the sixth resistor R6; the input end of the common mode inductor L1 is respectively coupled to both ends of the first capacitor C1, and its output end is coupled to the conversion module.

[0013] In this solution, a first filtering module is connected to the power input terminal. Through capacitors and common-mode inductors, it can effectively suppress external interference. At the same time, a sixth resistor R6 is set in parallel with the first capacitor C1 to ensure that the voltage in the first capacitor C1 is discharged to a safe voltage, fully considering electrical safety and equipment safety.

[0014] In a further implementation, it also includes a second filtering module connected in series between the conversion module and the main control module. The second filtering module includes a seventh resistor R7 and a second capacitor C2. The positive and negative electrodes of the second capacitor are coupled to the output terminal of the conversion module, and the seventh resistor R7 is connected in parallel with the second capacitor C2.

[0015] In this solution, a second filtering module is coupled to the output terminal of the conversion module. Using the RC filtering mechanism, it filters and suppresses harmonic interference input from the power grid (power input terminal) and electromagnetic interference caused by high-frequency switching, ensuring the normal operation of the subsequent equipment.

[0016] In a further implementation, it also includes a power-on indication module. The power-on indication module includes an LED lamp. The positive electrode of the LED lamp is connected to the output terminal of the conversion module through the seventh resistor R7, and the negative electrode is grounded.

[0017] In this solution, an LED lamp is connected at the back end for power-on indication, so that users can observe the control more intuitively.

[0018] In a further implementation, the main control module includes an MCU; the conversion module is a rectification circuit for converting AC to DC.

[0019] The present utility model also provides a massage chair, including a massage chair body and a low-power supply circuit as described above. Description of the Drawings

[0020] Figure 1 is a system framework diagram of a low-power supply circuit provided by an embodiment of the present utility model;

[0021] Figure 2 is provided by an embodiment of the present utility model Figure 1 of the hardware circuit diagram;

[0022] Wherein: main control module 1, conversion module 2, start module 3, first filtering module 4, second filtering module 5; power input terminal CN1, first load interface CN2. Detailed Embodiments

[0023] The embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings. The given embodiments are only for illustrative purposes and should not be construed as limiting the present invention. The included drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of the present invention, because many changes can be made to the present invention without departing from the spirit and scope of the present invention.

[0024] A low-power supply circuit provided by an embodiment of the present invention is as Figure 1 , Figure 2 shown. In this embodiment, it includes a main control module 1, a conversion module 2, a startup module 3, a first filtering module 4, a second filtering module 5, and a first load interface CN2. The input end of the conversion module 2 and the input end of the startup module 3 are connected to the power input end CN1. The output end of the conversion module 2 is connected to the power supply ends of the main control module 1 and the startup module 3. The main control module 1 is connected to the trigger end of the startup module 3. The output end of the startup module 3 is connected to the input end of the first load interface CN2. The first filtering module 4 is connected in series between the power input end CN1 and the conversion module 2. The second filtering module 5 is connected in series between the conversion module 2 and the main control module 1.

[0025] Among them, the first load interface CN2 is used to supply power to the high-current load in the massage chair.

[0026] In this embodiment, the startup module 3 includes an isolation module and a switch module. One end of the isolation module is used as the power supply end and is connected to the output end of the conversion module 2. The other end is used as the trigger end and is connected to the main control module 1. Its output end is connected to the control end of the switch module. The input end of the switch module is connected to the power input end CN1, and the output end is connected to the first load interface CN2.

[0027] In this embodiment, the isolation module includes a first resistor R1 and an optocoupler U1. The 1-foot of the optocoupler U1 is connected to one end of the first resistor R1. The 2-foot is used as the trigger end and is connected to the main control module 1. The 4-foot is used as the output end and is connected to the control end of the switch module. The 6-foot is connected to the input end of the switch module. The other end of the first resistor R1 is used as the power supply end and is connected to the output end of the conversion module 2.

[0028] Among them, the optocoupler U1 is preferably a dual-silicon output optocoupler.

[0029] This embodiment sets an optocoupler for isolated startup control, which can completely isolate between the input and the output, effectively avoid interference between circuits, and can effectively prevent damage to the input end by the reverse voltage at the output end, thereby protecting the safety of the entire circuit.

[0030] In this embodiment, the switch module includes a triac Q1, a second resistor R2, a third resistor R3, a fourth resistor R4, and a fifth resistor R5. The T2 pole of the triac Q1 is connected to the power input terminal CN1, the T1 pole is connected to the first load interface CN2, and the control pole is connected to the 4th pin of the optocoupler U1 through the fifth resistor R5. Both ends of the second resistor R2 are respectively connected to the T1 pole and the T2 pole; both ends of the third resistor R3 are respectively connected to the 6th pin of the optocoupler U1 and the T2 pole; both ends of the fourth resistor R4 are respectively connected to the T1 pole and the control pole.

[0031] In this embodiment, a triac Q1 is connected in series between the first load interface CN2 and the power input terminal CN1. By changing the trigger signal at the input end through the main control module 1, the on and off control of the triac can be realized, and then the control of the load power supply circuit can be realized. The control is flexible and reliable, and the reverse voltage suppression ability is strong.

[0032] In this embodiment, the first filtering module 4 includes a sixth resistor R6, a first capacitor C1, and a common mode inductor L1. Both ends of the sixth resistor R6 are respectively connected to the live wire and the neutral wire of the power input terminal CN1, and the first capacitor C1 is connected in parallel with the sixth resistor R6; the input end of the common mode inductor L1 is respectively coupled to both ends of the first capacitor C1, and its output end is coupled to the conversion module 2.

[0033] In this embodiment, the first filtering module 4 is connected to the power input terminal CN1. Through the capacitor and the common mode inductor, external interference can be effectively suppressed. At the same time, the sixth resistor R6 connected in parallel with the first capacitor C1 is set to ensure that the voltage in the first capacitor C1 is discharged to a safe voltage, fully considering electrical safety and equipment safety.

[0034] In this embodiment, the second filtering module 5 includes a seventh resistor R7 and a second capacitor C2. The positive and negative poles of the second capacitor are coupled to the output end of the conversion module 2, and the seventh resistor R7 is connected in parallel with the second capacitor C2.

[0035] In this embodiment, the second filtering module 5 is coupled to the output end of the conversion module 2. Using the RC filtering mechanism, the harmonic interference input from the power grid (power input terminal CN1) and the electromagnetic interference caused by high-frequency switching are filtered and suppressed to ensure the normal operation of the subsequent equipment.

[0036] In this embodiment, it further includes a power-on indication module. The power-on indication module includes an LED lamp. The positive pole of the LED lamp is connected to the output end of the conversion module 2 through the seventh resistor R7, and the negative pole is grounded.

[0037] In this embodiment, an LED lamp is connected at the back end for power-on indication, so that users can observe the control more intuitively.

[0038] In this embodiment, the main control module 1 includes an MCU; the conversion module 2 is a rectification circuit for converting AC to DC.

[0039] Among them, the power input terminal CN1 is for mains input. After passing through the conversion module 2, the alternating current is converted into 5V direct current to supply power to the main control module 1.

[0040] In this embodiment, taking the MCU as the main control module 1 as an example, the power supply startup principle of the circuit is as follows:

[0041] (1) The mains input power enters the power input terminal CN1. The 5V direct current obtained after passing through the first filtering module 4 and the conversion module 2 is then supplied to the MCU through the second filtering module 5.

[0042] At this time, the MCU outputs a low level through the RX0 port, the optocoupler U1 conducts, the control electrode of the triac Q1 conducts forward, and the load connected to the first load interface CN2 is powered on and enters the working state.

[0043] On the contrary, when the MCU outputs a high level through the RX0 port, the optocoupler U1 is cut off, the triac Q1 is turned off, and the load connected to the first load interface CN2 is powered off and enters the shutdown low-power state.

[0044] Example 2

[0045] The present utility model also provides a massage chair, including a massage chair body and a low-power supply circuit as described in Embodiment 1.

[0046] In the embodiment of the present utility model, a startup module 3 is connected between the main control module 1 and the first load interface CN2. The startup module 3 is connected in series between the first load interface CN2 and the power input terminal CN1. After the main control module 1 is powered on, the main control module 1 drives the startup module 3 to conduct or cut off the power supply circuit between the first load interface CN2 and the power input terminal CN1 to supply power to the load. When the load is in the idle state, the main control module 1 cuts off the power supply circuit between the first load interface CN2 and the power input terminal CN1, thereby greatly reducing the power consumption of the massage chair load during standby, reducing the short-circuit risk during standby, and improving the circuit safety.

[0047] The above embodiments are the preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present utility model shall be equivalent replacement methods and are all included in the protection scope of the present utility model.

Claims

1. A low power consumption power supply circuit, characterized in that: It includes a main control module, a conversion module, a start module and a first load interface, the input end of the conversion module and the input end of the start module are connected to the power input end, the output end of the conversion module is connected to the power supply end of the main control module and the start module; the main control module is connected to the trigger end of the start module; the output end of the start module is connected to the input end of the first load interface.

2. A low power consumption power supply circuit as claimed in claim 1, characterized in that: The startup module includes an isolation module and a switch module; one end of the isolation module is connected to the output end of the conversion module as a power supply end, and the other end is connected to the main control module as a trigger end, and its output end is connected to the control end of the switch module; the input end of the switch module is connected to the power supply input end, and the output end is connected to the first load interface.

3. A low power consumption power supply circuit as claimed in claim 2, characterized in that: The isolation module includes a first resistor R1 and an optocoupler U1; pin 1 of the optocoupler U1 is connected to one end of the first resistor R1, pin 2 is connected to the main control module as a trigger end, pin 4 is connected to the control end of the switch module as an output end, and pin 6 is connected to the input end of the switch module; the other end of the first resistor R1 is connected to the output end of the conversion module as a power supply end.

4. A low power consumption power supply circuit as claimed in claim 3, characterized in that: The switch module includes a bidirectional thyristor Q1, a second resistor R2, a third resistor R3, a fourth resistor R4 and a fifth resistor R5. The T2 pole of the bidirectional thyristor Q1 is connected to the power input end, the T1 pole is connected to the first load interface, and the control pole is connected to the 4th pin of the optocoupler U1 through the fifth resistor R5; the two ends of the second resistor R2 are respectively connected to the T1 pole and the T2 pole; the two ends of the third resistor R3 are respectively connected to the 6th pin and the T2 pole of the optocoupler U1; the two ends of the fourth resistor R4 are respectively connected to the T1 pole and the control pole.

5. A low power consumption power supply circuit as claimed in claim 4, characterized in that: It also includes a first filtering module connected in series between the power input end and the conversion module, the first filtering module includes a sixth resistor R6, a first capacitor C1 and a common-mode inductor L1, the two ends of the sixth resistor R6 are respectively connected to the live wire and the neutral wire of the power input end, the first capacitor C1 and the sixth resistor R6 are connected in parallel; the input end of the common-mode inductor L1 is respectively coupled to the two ends of the first capacitor C1, and its output end is coupled to the conversion module.

6. A low power consumption power supply circuit as claimed in claim 5, characterized in that: It also includes a second filtering module connected in series between the conversion module and the main control module, the second filtering module includes a seventh resistor R7 and a second capacitor C2, the positive and negative electrodes of the second capacitor are coupled to the output end of the conversion module, and the seventh resistor R7 is connected in parallel with the second capacitor C2.

7. A low power consumption power supply circuit as claimed in claim 6, characterized in that: It also includes a power-on indication module, which includes an LED lamp. The positive electrode of the LED lamp is connected to the output end of the conversion module through the seventh resistor R7, and the negative electrode is grounded.

8. A low power consumption power supply circuit as claimed in claim 4, characterized in that: The main control module includes an MCU; the conversion module is an AC-to-DC rectifier circuit.

9. A massage chair, characterized in that: The invention comprises a massage chair body and a low-power power supply circuit as claimed in any one of claims 1 to 8.

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