Switching circuit

Abstract

The utility model discloses a switching circuit, comprising a main control circuit, the output end of which is connected with the input end of a first switching circuit, the input end of a second switching circuit and the input end of a third switching circuit; the input end of the first switching circuit is further connected with the micro-current output circuit and the radio-frequency signal output circuit, and the output end of the first switching circuit is connected with the first electrode plate; the input end of the second switching circuit is further connected with the micro-current output circuit and the radio-frequency signal output circuit, and the output end of the second switching circuit is connected with the second electrode plate; the input end of the third switching circuit is further connected with the micro-current output circuit and the radio-frequency signal output circuit, and the output end of the third switching circuit is connected with the third electrode plate; through the first switching circuit, the second switching circuit and the third switching circuit, the beauty instrument can output a micro-current signal or a radio frequency signal at the same time, different parts of a human face can be heated or stimulated, and the use efficiency of the beauty instrument is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of signal switching, in particular to a switching circuit. Background Art

[0002] Radio frequency beauty instrument is a beauty method that uses radio frequency electromagnetic waves to act on the deep tissue of the skin, heat the dermis of the skin, stimulate the production of new collagen and elastin, and thus achieve the effect of tightening the skin. Microcurrent beauty uses microcurrent to stimulate muscle tissue movement and promote collagen synthesis. The above two beauty methods generally require the use of electrodes to contact the skin to release radio frequency electromagnetic waves or microcurrents to the deep tissue of the skin. In the prior art, beauty instruments cannot output microcurrent signals or radio frequency signals through electrodes. At the same time, they do not have the ability to heat or stimulate multiple parts of the face, which reduces the efficiency of the beauty instrument. Utility Model Content

[0003] Based on this, it is necessary to propose a switching circuit to address the above problems.

[0004] A switching circuit, applied to a beauty instrument, comprises:

[0005] a main control circuit, the output end of which is connected to the input end of the first switching circuit, the input end of the second switching circuit and the input end of the third switching circuit, and is used to output a first control signal to the first switching circuit, output a second control signal to the second switching circuit and output a third control signal to the third switching circuit;

[0006] The first switching circuit has an input end connected to the micro-current output circuit and the radio frequency signal output circuit, and an output end connected to the first electrode sheet, for receiving the first control signal and making the micro-current output circuit and the first electrode sheet conductive or the radio frequency signal output circuit and the first electrode sheet conductive, wherein the first electrode sheet is used to contact the left face;

[0007] The second switching circuit has an input end connected to the micro-current output circuit and the radio frequency signal output circuit, and an output end connected to the second electrode sheet, for receiving the second control signal and making the micro-current output circuit and the second electrode sheet conductive or the radio frequency signal output circuit and the second electrode sheet conductive, and the second electrode sheet is used to contact the right face;

[0008] The third switching circuit, whose input end is also connected to the micro-current output circuit and the radio frequency signal output circuit, and whose output end is connected to the third electrode sheet, is used to receive the third control signal and make the micro-current output circuit and the third electrode sheet conductive or the radio frequency signal output circuit and the third electrode sheet conductive, and the third electrode sheet is used to contact the forehead;

[0009] Among them, the micro-current output circuit is used to output micro-current signals, and the radio frequency signal output circuit is used to output radio frequency signals.

[0010] In one embodiment, the main control circuit includes: a main control chip;

[0011] The first output terminal of the main control chip is connected to the input terminal of the first switching circuit;

[0012] The second output terminal of the main control chip is connected to the input terminal of the second switching circuit;

[0013] The third output terminal of the main control chip is connected to the input terminal of the third switching circuit.

[0014] In one embodiment, the first switching circuit includes: a first relay, a first MOS tube and a first resistor;

[0015] The gate of the first MOS transistor is connected to the first output terminal of the main control chip, the source of the first MOS transistor is grounded, and the drain of the first MOS transistor is connected to the first end of the winding of the first relay;

[0016] The second end of the winding of the first relay is connected to an external power source; the normally closed contact of the first relay is connected to the output end of the micro-current output circuit; the normally open contact of the first relay is connected to the output end of the radio frequency signal output circuit; the common end of the first relay is connected to the first electrode sheet;

[0017] One end of the first resistor is connected to the gate of the first MOS transistor, and the other end is connected to the source of the first MOS transistor.

[0018] In one embodiment, the first switching circuit further includes: a first capacitor and a second capacitor;

[0019] One end of the first capacitor is connected to the second end of the winding of the first relay and the external power supply, and the other end of the first capacitor is grounded;

[0020] The second capacitor is connected in parallel with the first capacitor.

[0021] In one embodiment, the first switching circuit further includes: a first diode;

[0022] An anode of the first diode is connected to a first end of the winding of the first relay, and a cathode of the first diode is connected to a second end of the winding of the first relay.

[0023] In one embodiment, the second switching circuit includes: a second relay, a second MOS tube and a second resistor;

[0024] The gate of the second MOS tube is connected to the second output terminal of the main control chip, the source of the second MOS tube is grounded, and the drain of the second MOS tube is connected to the first end of the winding of the second relay;

[0025] The second end of the winding of the second relay is connected to an external power source; the normally closed contact of the second relay is connected to the output end of the micro-current output circuit; the normally open contact of the second relay is connected to the output end of the radio frequency signal output circuit; the common end of the second relay is connected to the second electrode sheet;

[0026] One end of the second resistor is connected to the gate of the second MOS transistor, and the other end of the second resistor is connected to the source of the second MOS transistor.

[0027] In one embodiment, the second switching circuit further includes: a third capacitor and a fourth capacitor;

[0028] One end of the third capacitor is connected to the second end of the winding of the second relay and the external power supply, and the other end of the third capacitor is grounded;

[0029] The fourth capacitor is connected in parallel with the third capacitor.

[0030] In one embodiment, the second switching circuit further includes: a second diode;

[0031] An anode of the second diode is connected to a first end of the winding of the second relay, and a cathode of the second diode is connected to a second end of the winding of the second relay.

[0032] In one embodiment, the third switching circuit includes: a third relay, a third MOS tube and a third resistor;

[0033] The gate of the third MOS tube is connected to the first output terminal of the main control chip, the source of the third MOS tube is grounded, and the drain of the third MOS tube is connected to the first end of the winding of the third relay;

[0034] The second end of the winding of the third relay is connected to an external power supply; the normally closed contact of the third relay is connected to the output end of the micro-current output circuit; the normally open contact of the third relay is connected to the output end of the radio frequency signal output circuit; the common end of the third relay is connected to the third electrode sheet;

[0035] One end of the third resistor is connected to the gate of the third MOS tube, and the other end is connected to the source of the third MOS tube.

[0036] In one embodiment, the third switching circuit further includes: a fifth capacitor, a sixth capacitor and a third diode;

[0037] One end of the fifth capacitor is connected to the second end of the winding of the third relay and the external power supply, and the other end of the fifth capacitor is grounded;

[0038] The sixth capacitor is connected in parallel with the fifth capacitor;

[0039] An anode of the third diode is connected to a first end of the winding of the third relay, and a cathode of the third diode is connected to a second end of the winding of the third relay.

[0040] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0041] The present application outputs a first control signal to the first switching circuit, outputs a second control signal to the second switching circuit, and outputs a third control signal to the third switching circuit through a main control circuit; the first switching circuit receives the first control signal, and turns on the microcurrent output circuit and the first electrode sheet or turns on the radio frequency signal output circuit and the first electrode sheet, and the first electrode sheet contacts the left face; the second switching circuit receives the second control signal, and turns on the microcurrent output circuit and the second electrode sheet or turns on the radio frequency signal output circuit and the second electrode sheet, and the second electrode sheet contacts the right face; the third switching circuit receives the third control signal, and turns on the microcurrent output circuit and the third electrode sheet or turns on the radio frequency signal output circuit and the third electrode sheet, and the third electrode sheet contacts the forehead; wherein the microcurrent output circuit is used to output a microcurrent signal, and the radio frequency signal output circuit is used to output a radio frequency signal. The present application realizes that the beauty instrument can output microcurrent signals or radio frequency signals through the first switching circuit, the second switching circuit, and the third switching circuit, and can heat or stimulate different parts of the face, thereby improving the use efficiency of the beauty instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] in:

[0044] Figure 1 is a structural block diagram of a switching circuit in one embodiment;

[0045] Figure 2 is a circuit diagram of a main control circuit in one embodiment;

[0046] Figure 3 is a circuit diagram of a first switching circuit in one embodiment;

[0047] Figure 4 is a circuit diagram of a second switching circuit in one embodiment;

[0048] Figure 5 FIG. 4 is a circuit diagram of a third switching circuit in an embodiment. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] A radio frequency beauty instrument is a beauty method that uses radio frequency electromagnetic waves to act on the deep tissues of the skin, heat the dermis of the skin, stimulate the production of new collagen and elastin, and thus achieve the effect of tightening the skin. Microcurrent beauty uses microcurrent to stimulate muscle tissue movement and promote collagen synthesis. The above two beauty methods generally require the use of electrodes to contact the skin to release radio frequency electromagnetic waves or microcurrents to the deep tissues of the skin. In the prior art, beauty instruments are unable to output microcurrent signals or radio frequency signals through electrodes. At the same time, they do not have the ability to heat or stimulate multiple parts of the face, reducing the efficiency of the use of beauty instruments. In order to solve the above technical problems, the present application provides a switching circuit, which is used in beauty instruments, such as Figure 1As shown, it includes: a main control circuit 10, a first switching circuit 20, a second switching circuit 30 and a third switching circuit 40, wherein the output end of the main control circuit 10 is connected with the input end of the first switching circuit 20, the input end of the second switching circuit 30 and the input end of the third switching circuit 40, and is used to output a first control signal to the first switching circuit 20, output a second control signal to the second switching circuit 30 and output a third control signal to the third switching circuit 40; the input end of the first switching circuit 20 is also connected with a micro-current output circuit and a radio frequency signal output circuit, and the output end is connected with a first electrode sheet, and is used to receive the first control signal, and to make the micro-current output circuit and the first electrode sheet conductive or the radio frequency signal output circuit and the first electrode sheet conductive, and the first electrode sheet is used to contact the left face; The input end of the second switching circuit 30 is also connected to the microcurrent output circuit and the radio frequency signal output circuit, and the output end is connected to the second electrode sheet, for receiving the second control signal, and making the microcurrent output circuit and the second electrode sheet conductive or the radio frequency signal output circuit and the second electrode sheet conductive, and the second electrode sheet is used to contact the right face; the input end of the third switching circuit 40 is also connected to the microcurrent output circuit and the radio frequency signal output circuit, and the output end is connected to the third electrode sheet, for receiving the third control signal, and making the microcurrent output circuit and the third electrode sheet conductive or the radio frequency signal output circuit and the third electrode sheet conductive, and the third electrode sheet is used to contact the forehead; wherein, the microcurrent output circuit is used to output a microcurrent signal, and the radio frequency signal output circuit is used to output a radio frequency signal. The present application outputs a first control signal to the first switching circuit, outputs a second control signal to the second switching circuit, and outputs a third control signal to the third switching circuit through a main control circuit; the first switching circuit receives the first control signal, and turns on the microcurrent output circuit and the first electrode sheet or turns on the radio frequency signal output circuit and the first electrode sheet, and the first electrode sheet contacts the left face; the second switching circuit receives the second control signal, and turns on the microcurrent output circuit and the second electrode sheet or turns on the radio frequency signal output circuit and the second electrode sheet, and the second electrode sheet contacts the right face; the third switching circuit receives the third control signal, and turns on the microcurrent output circuit and the third electrode sheet or turns on the radio frequency signal output circuit and the third electrode sheet, and the third electrode sheet contacts the forehead; wherein the microcurrent output circuit is used to output a microcurrent signal, and the radio frequency signal output circuit is used to output a radio frequency signal. The present application realizes that the beauty instrument can output microcurrent signals or radio frequency signals through the first switching circuit, the second switching circuit, and the third switching circuit, and can heat or stimulate different parts of the face, thereby improving the use efficiency of the beauty instrument.

[0051] In one embodiment, Figure 2As shown, the main control circuit 10 includes: a main control chip U6, the model of the main control chip U6 is STM32F105RBT6; wherein, the first output terminal PA6 of the main control chip U6 is connected to the input terminal of the first switching circuit 20; the second output terminal PA5 of the main control chip U6 is connected to the input terminal of the second switching circuit 30; the third output terminal PC5 of the main control chip U6 is connected to the input terminal of the third switching circuit 40.

[0052] In one embodiment, Figure 3 As shown, the first switching circuit 20 includes: a first relay RL1, a first MOS tube Q9 and a first resistor R45; wherein, the gate of the first MOS tube Q9 is connected to the first output terminal PA6 of the main control chip U6, the source of the first MOS tube Q9 is grounded, and the drain of the first MOS tube Q9 is connected to the first end 1 of the winding of the first relay RL1; the second end 8 of the winding of the first relay RL1 is connected to an external power supply; the normally closed contact of the first relay RL1 is connected to the output end of the micro-current output circuit; the normally open contact of the first relay RL1 is connected to the output end of the RF signal output circuit; the common end of the first relay RL1 is connected to the first electrode sheet; one end of the first resistor R45 is connected to the gate of the first MOS tube Q9, and the other end is connected to the source of the first MOS tube Q9.

[0053] In one embodiment, Figure 3 As shown, the first switching circuit 20 also includes: a first capacitor C42 and a second capacitor C43; wherein, one end of the first capacitor C42 is connected to the second end 8 of the winding of the first relay RL1 and the external power supply, and the other end of the first capacitor C42 is grounded; the second capacitor C43 is connected in parallel with the first capacitor C42.

[0054] In one embodiment, Figure 3 As shown, the first switching circuit 20 further includes: a first diode D12; wherein the anode of the first diode D12 is connected to the first end 1 of the winding of the first relay RL1, and the cathode of the first diode D12 is connected to the second end 8 of the winding of the first relay RL1.

[0055] In one embodiment, Figure 4As shown, the second switching circuit 30 includes: a second relay RL2, a second MOS tube Q10 and a second resistor R46; wherein, the gate of the second MOS tube Q10 is connected to the second output terminal PA5 of the main control chip U6, the source of the second MOS tube Q10 is grounded, and the drain of the second MOS tube Q10 is connected to the first end 1 of the winding of the second relay RL2; the second end 8 of the winding of the second relay RL2 is connected to an external power supply; the normally closed contact of the second relay RL2 is connected to the output end of the micro-current output circuit; the normally open contact of the second relay RL2 is connected to the output end of the RF signal output circuit; the common end of the second relay RL2 is connected to the second electrode sheet; one end of the second resistor R46 is connected to the gate of the second MOS tube Q10, and the other end is connected to the source of the second MOS tube Q10.

[0056] In one embodiment, Figure 4 As shown, the second switching circuit 30 also includes: a third capacitor C44 and a fourth capacitor C45; wherein, one end of the third capacitor C44 is connected to the second end 8 of the winding of the second relay RL2 and the external power supply, and the other end of the third capacitor C44 is grounded; the fourth capacitor C45 is connected in parallel with the third capacitor C44.

[0057] In one embodiment, Figure 4 As shown, the second switching circuit 30 also includes: a second diode D13; wherein the anode of the second diode D13 is connected to the first end 1 of the winding of the second relay RL2, and the cathode of the second diode D13 is connected to the second end 8 of the winding of the second relay RL2.

[0058] In one embodiment, Figure 5 As shown, the third switching circuit 40 includes: a third relay RL3, a third MOS tube Q11 and a third resistor R47; wherein, the gate of the third MOS tube Q11 is connected to the first output terminal PA6 of the main control chip U6, the source of the third MOS tube Q11 is grounded, and the drain of the third MOS tube Q11 is connected to the first end 1 of the winding of the third relay RL3; the second end 8 of the winding of the third relay RL3 is connected to an external power supply; the normally closed contact of the third relay RL3 is connected to the output end of the micro-current output circuit; the normally open contact of the third relay RL3 is connected to the output end of the radio frequency signal output circuit; the common end of the third relay RL3 is connected to the third electrode sheet; one end of the third resistor R47 is connected to the gate of the third MOS tube Q11, and the other end is connected to the source of the third MOS tube Q11.

[0059] In one embodiment, Figure 5 As shown, the third switching circuit 40 also includes: a fifth capacitor C46, ​​a sixth capacitor C47 and a third diode D14; wherein, one end of the fifth capacitor C46 is connected to the second end 8 of the winding of the third relay RL3 and the external power supply, and the other end of the fifth capacitor C46 is grounded; the sixth capacitor C47 is connected in parallel with the fifth capacitor C46; the anode of the third diode D14 is connected to the first end 1 of the winding of the third relay RL3, and the cathode of the third diode D14 is connected to the second end 8 of the winding of the third relay RL3.

[0060] The present application outputs a first control signal to the first switching circuit, outputs a second control signal to the second switching circuit, and outputs a third control signal to the third switching circuit through a main control circuit; the first switching circuit receives the first control signal, and turns on the microcurrent output circuit and the first electrode sheet or turns on the radio frequency signal output circuit and the first electrode sheet, and the first electrode sheet contacts the left face; the second switching circuit receives the second control signal, and turns on the microcurrent output circuit and the second electrode sheet or turns on the radio frequency signal output circuit and the second electrode sheet, and the second electrode sheet contacts the right face; the third switching circuit receives the third control signal, and turns on the microcurrent output circuit and the third electrode sheet or turns on the radio frequency signal output circuit and the third electrode sheet, and the third electrode sheet contacts the forehead; wherein the microcurrent output circuit is used to output a microcurrent signal, and the radio frequency signal output circuit is used to output a radio frequency signal. The present application realizes that the beauty instrument can output microcurrent signals or radio frequency signals through the first switching circuit, the second switching circuit, and the third switching circuit, and can heat or stimulate different parts of the face, thereby improving the use efficiency of the beauty instrument.

[0061] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A switching circuit, characterized in that: Applied in beauty instruments, including: a main control circuit, the output end of which is connected to the input end of the first switching circuit, the input end of the second switching circuit and the input end of the third switching circuit, and is used to output a first control signal to the first switching circuit, output a second control signal to the second switching circuit and output a third control signal to the third switching circuit; The first switching circuit has an input end connected to the micro-current output circuit and the radio frequency signal output circuit, and an output end connected to the first electrode sheet, for receiving the first control signal and making the micro-current output circuit and the first electrode sheet conductive or the radio frequency signal output circuit and the first electrode sheet conductive, wherein the first electrode sheet is used to contact the left face; The second switching circuit has an input end connected to the micro-current output circuit and the radio frequency signal output circuit, and an output end connected to the second electrode sheet, for receiving the second control signal and making the micro-current output circuit and the second electrode sheet conductive or the radio frequency signal output circuit and the second electrode sheet conductive, and the second electrode sheet is used to contact the right face; The third switching circuit, whose input end is also connected to the micro-current output circuit and the radio frequency signal output circuit, and whose output end is connected to the third electrode sheet, is used to receive the third control signal and make the micro-current output circuit and the third electrode sheet conductive or the radio frequency signal output circuit and the third electrode sheet conductive, and the third electrode sheet is used to contact the forehead; Among them, the micro-current output circuit is used to output micro-current signals, and the radio frequency signal output circuit is used to output radio frequency signals.

2. The switching circuit according to claim 1, characterized in that: The main control circuit comprises: a main control chip; The first output terminal of the main control chip is connected to the input terminal of the first switching circuit; The second output terminal of the main control chip is connected to the input terminal of the second switching circuit; The third output terminal of the main control chip is connected to the input terminal of the third switching circuit.

3. The switching circuit according to claim 2, characterized in that: The first switching circuit includes: a first relay, a first MOS tube and a first resistor; The gate of the first MOS transistor is connected to the first output terminal of the main control chip, the source of the first MOS transistor is grounded, and the drain of the first MOS transistor is connected to the first end of the winding of the first relay; The second end of the winding of the first relay is connected to an external power source; the normally closed contact of the first relay is connected to the output end of the micro-current output circuit; the normally open contact of the first relay is connected to the output end of the radio frequency signal output circuit; the common end of the first relay is connected to the first electrode sheet; One end of the first resistor is connected to the gate of the first MOS transistor, and the other end is connected to the source of the first MOS transistor.

4. The switching circuit according to claim 3, characterized in that: The first switching circuit further includes: a first capacitor and a second capacitor; One end of the first capacitor is connected to the second end of the winding of the first relay and the external power supply, and the other end of the first capacitor is grounded; The second capacitor is connected in parallel with the first capacitor.

5. The switching circuit according to claim 4, characterized in that: The first switching circuit further includes: a first diode; An anode of the first diode is connected to a first end of the winding of the first relay, and a cathode of the first diode is connected to a second end of the winding of the first relay.

6. The switching circuit according to claim 2, characterized in that: The second switching circuit includes: a second relay, a second MOS tube and a second resistor; The gate of the second MOS tube is connected to the second output terminal of the main control chip, the source of the second MOS tube is grounded, and the drain of the second MOS tube is connected to the first end of the winding of the second relay; The second end of the winding of the second relay is connected to an external power source; the normally closed contact of the second relay is connected to the output end of the micro-current output circuit; the normally open contact of the second relay is connected to the output end of the radio frequency signal output circuit; the common end of the second relay is connected to the second electrode sheet; One end of the second resistor is connected to the gate of the second MOS transistor, and the other end is connected to the source of the second MOS transistor.

7. The switching circuit according to claim 6, characterized in that: The second switching circuit further includes: a third capacitor and a fourth capacitor; One end of the third capacitor is connected to the second end of the winding of the second relay and the external power supply, and the other end of the third capacitor is grounded; The fourth capacitor is connected in parallel with the third capacitor.

8. The switching circuit according to claim 7, characterized in that: The second switching circuit further includes: a second diode; An anode of the second diode is connected to a first end of the winding of the second relay, and a cathode of the second diode is connected to a second end of the winding of the second relay.

9. The switching circuit according to claim 2, characterized in that: The third switching circuit comprises: a third relay, a third MOS tube and a third resistor; The gate of the third MOS tube is connected to the first output terminal of the main control chip, the source of the third MOS tube is grounded, and the drain of the third MOS tube is connected to the first end of the winding of the third relay; The second end of the winding of the third relay is connected to an external power supply; the normally closed contact of the third relay is connected to the output end of the micro-current output circuit; the normally open contact of the third relay is connected to the output end of the radio frequency signal output circuit; the common end of the third relay is connected to the third electrode sheet; One end of the third resistor is connected to the gate of the third MOS tube, and the other end is connected to the source of the third MOS tube.

10. The switching circuit according to claim 9, characterized in that: The third switching circuit further includes: a fifth capacitor, a sixth capacitor and a third diode; One end of the fifth capacitor is connected to the second end of the winding of the third relay and the external power supply, and the other end of the fifth capacitor is grounded; The sixth capacitor is connected in parallel with the fifth capacitor; An anode of the third diode is connected to a first end of the winding of the third relay, and a cathode of the third diode is connected to a second end of the winding of the third relay.

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