High-frequency high-voltage signal output circuit and skin beautifying instrument

Abstract

The utility model discloses a high-frequency high-voltage signal output circuit and a skin beautifying instrument. The high-frequency high-voltage signal output circuit comprises a PWM signal generation module, a high-frequency high-voltage signal generation module, a plurality of switch modules and a plurality of connectors. The PWM signal generation module generates a PWM control signal; the high-frequency high-voltage signal generation module converts the power supply voltage into a high-frequency high-voltage signal according to the PWM control signal; the plurality of switch modules are respectively conducted according to the control signals, so that the plurality of connectors respectively output high-frequency voltage signals to the electrical stimulation heads in different areas, and the electrical stimulation heads work. According to the technical scheme, generation and control of high-frequency and high-voltage signals are achieved, the signals are effectively distributed to the electrical stimulation heads in multiple areas for treatment, the overall effect of anti-wrinkle and anti-aging beauty products is further improved, and more uniform and more effective skin beauty treatment is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of phototherapy and beauty, in particular to a high-frequency and high-voltage signal output circuit and a skin beauty instrument. Background Art

[0002] The existing skin anti-wrinkle and anti-aging beauty products have achieved certain effects in terms of function and application, but still have the following defects:

[0003] Existing RF beauty devices suffer from suboptimal skin stimulation due to output voltage limitations and a lack of precise signal control. For example, the output voltage signal may not be able to adjust intensity or frequency in real time. This lack of precise control can lead to suboptimal treatment results and even cause discomfort or side effects. Utility Model Content

[0004] The embodiments of the present utility model provide a high-frequency and high-voltage signal output circuit and a skin beauty instrument to solve the above-mentioned technical problems.

[0005] A first aspect of an embodiment of the present utility model provides a high-frequency and high-voltage signal output circuit, comprising: a PWM signal generation module, a high-frequency and high-voltage signal generation module, a plurality of switch modules, and a plurality of connectors;

[0006] The PWM signal generating module is used to generate a PWM control signal;

[0007] The power input terminal of the high-frequency and high-voltage signal generating module receives the power supply voltage, and the control terminal of the high-frequency and high-voltage signal generating module is connected to the output terminal of the PWM signal generating module to convert the power supply voltage into a high-frequency and high-voltage signal according to the PWM control signal;

[0008] The input end of each switch module is connected to the first output end of the high-frequency and high-voltage signal generating module, the output end of each switch module is correspondingly connected to the first input end of a connector, and the second input end of each connector is connected to the second output end of the high-frequency and high-voltage signal generating module;

[0009] The multiple switch modules are turned on respectively according to the control signal, so that the multiple connectors respectively output high-frequency voltage signals to the electrical stimulation heads in different areas, so that the electrical stimulation heads work.

[0010] Optionally, the control end of the high-frequency and high-voltage signal generating module includes a first control end and a second control end;

[0011] The high-frequency and high-voltage signal generating module includes a first switch unit, a second switch unit, and a transformer, one end of the first switch unit is connected to the first end of the primary coil of the transformer, one end of the second switch unit is connected to the second end of the primary coil of the transformer, the other end of the first switch unit and the other end of the second switch unit are commonly connected to the ground, the control end of the first switch unit is the first control end of the high-frequency and high-voltage signal generating module, the control end of the second switch unit is the second control end of the high-frequency and high-voltage signal generating module, the center tap of the primary coil of the transformer is the power input end of the high-frequency and high-voltage signal generating module, and the first end and the second end of the secondary coil of the transformer are respectively the first output end and the second output end of the high-frequency and high-voltage signal generating module;

[0012] The first switch unit and the second switch unit are alternately turned on according to the PWM control signal, so that the transformer converts the power supply voltage into a high-frequency voltage signal.

[0013] Optionally, the first switch unit is a first MOS transistor, the drain of the first MOS transistor is one end of the first switch unit, the source of the first MOS transistor is the other end of the first switch unit, and the gate of the first MOS transistor is the control end of the first switch unit;

[0014] The second switch unit is a second MOS transistor, the drain of the second MOS transistor is one end of the second switch unit, the source of the second MOS transistor is the other end of the second switch unit, and the gate of the second MOS transistor is the control end of the second switch unit.

[0015] Optionally, the high-frequency and high-voltage signal generating module further includes a fourth resistor, a sixth resistor, a ninth resistor, a thirteenth resistor, a first diode, a third diode, a third capacitor, a fourth capacitor, and a voltage regulator tube;

[0016] One end of the sixth resistor and the cathode of the first diode are connected together to form the first control end of the high-frequency and high-voltage signal generating module. The other end of the sixth resistor is connected to the anode of the first diode and the gate of the first MOS transistor, respectively. The source of the first MOS transistor is the other end of the first switch unit. One end of the ninth resistor and the cathode of the third diode are connected together to form the second control end of the high-frequency and high-voltage signal generating module. The other end of the ninth resistor is connected to the anode of the third diode and the gate of the second MOS transistor, respectively. One end of the fourth resistor receives the power supply voltage. The other end of the fourth resistor is connected to the center tap of the primary coil of the transformer. The first end of the secondary coil of the transformer is connected to one end of the third capacitor. The center tap of the secondary coil of the transformer is connected to the second end of the third capacitor, the first end of the fourth capacitor, one end of the voltage regulator diode, and one end of the thirteenth resistor, respectively. The second end of the secondary coil of the transformer is connected to the second end of the fourth capacitor. The other end of the voltage regulator diode and the other end of the thirteenth resistor are connected to ground.

[0017] Optionally, the high-frequency and high-voltage signal generating module further includes a feedback module, one end of the feedback module, the other end of the first switch unit, and the other end of the second switch unit are commonly connected, and the other end of the feedback module is grounded;

[0018] The feedback module is used to collect the working status of the first switch unit or the second switch unit.

[0019] Optionally, each switch module includes a third switch unit and an isolation module, the power supply end of the isolation module is connected to the power supply voltage, the first input end of the isolation module is the input end of the switch module, the first output end of the isolation module is connected to one end of the third switch unit, the second output end of the isolation module is the output end of the switch module, the other end of the third switch unit is grounded, and the control end of the third switch unit is the control end of the switch module;

[0020] When the third switch unit is turned on, the isolation module connects the input end and the output end of the switch module.

[0021] Optionally, the third switch unit is a third MOS transistor, the drain of the third MOS transistor is one end of the third switch unit, the source of the third MOS transistor is the other end of the third switch unit, and the gate of the third MOS transistor is the control end of the third switch unit;

[0022] The isolation module is an optocoupler device, the first input end of the optocoupler device is the power supply end of the isolation module, the second input end of the optocoupler device is the second input end of the isolation module, the first output end of the optocoupler device is the first output end of the isolation module, and the second output end of the optocoupler device is the second output end of the isolation module;

[0023] The switch module further includes a first resistor, a second resistor, and a third resistor. One end of the first resistor serves as a power supply terminal of the switch module, and the other end of the first resistor is connected to the first input terminal of the optocoupler device. One end of the third resistor serves as a control terminal of the switch module, and the other end of the third resistor is respectively connected to the gate of the third MOS tube and one end of the second resistor. The other end of the second resistor and the source of the third MOS tube are commonly grounded.

[0024] Optionally, the high-frequency and high-voltage signal output circuit further includes a control module, wherein an output end of the control module is respectively connected to an input end of the PWM signal generating module and a control end of each switch module;

[0025] The control module sends a square wave signal to the PWM signal generation module, so that the PWM signal generation module generates a PWM control signal, so that the high-frequency and high-voltage signal generation module outputs a high-frequency and high-voltage signal, and controls the multiple switch modules to be turned on respectively, so that the multiple connectors respectively output high-frequency voltage signals to the electrical stimulation heads in different areas, so that the electrical stimulation heads work.

[0026] Optionally, the high-frequency and high-voltage signal output circuit further includes a temperature detection module, and the temperature detection module is connected to the connector and the control module respectively;

[0027] The control module shuts down when the temperature of the connector electrode is detected by the temperature detection module to be higher than a preset value.

[0028] A second aspect of an embodiment of the present utility model provides a skin beauty instrument, comprising: the high-frequency and high-voltage signal output circuit described in the first aspect.

[0029] The technical effect of the embodiment of the utility model is: this technical solution realizes the generation and control of high-frequency and high-voltage signals by setting a PWM signal generation module and a high-frequency and high-voltage signal generation module, and effectively distributes the signals to the electric stimulation heads in multiple areas for cyclic treatment. The PWM signal generation module provides precise signal control capabilities, and the high-frequency and high-voltage signal generation module ensures the stable output of high-frequency and high-voltage signals. The combination of multiple switch modules and connectors can efficiently process different skin areas, thereby improving the overall effect of anti-wrinkle and anti-aging beauty products, and providing more uniform and effective skin beauty treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0031] Figure 1 This is a structural diagram of a high-frequency and high-voltage signal output circuit provided in Example 1 of the present utility model;

[0032] Figure 2 This is a structural diagram of a high-frequency and high-voltage signal generating module in a high-frequency and high-voltage signal output circuit provided in the first embodiment of the present utility model;

[0033] Figure 3 This is a circuit diagram of a high-frequency and high-voltage signal generating module of a high-frequency and high-voltage signal output circuit provided in the first embodiment of the present utility model;

[0034] Figure 4 This is another structural diagram of a high-frequency and high-voltage signal generating module in a high-frequency and high-voltage signal output circuit provided in the first embodiment of the present utility model;

[0035] Figure 5 This is a circuit diagram of a feedback module in a high-frequency and high-voltage signal generating module in a high-frequency and high-voltage signal output circuit provided in the first embodiment of the present utility model;

[0036] Figure 6 This is a structural diagram of a switch module in a high-frequency and high-voltage signal output circuit provided in the first embodiment of the present utility model;

[0037] Figure 7 This is a circuit diagram of a switch module in a high-frequency and high-voltage signal output circuit provided in Example 1 of the present utility model;

[0038] Figure 8 This is a structural diagram of adding a control module to a high-frequency and high-voltage signal output circuit provided in the first embodiment of the present utility model;

[0039] Figure 9 This is a structural diagram of a high-frequency and high-voltage signal output circuit provided by the first embodiment of the present utility model, in which a temperature detection module is added;

[0040] Figure 10 This is a circuit diagram of a power supply module in a high-frequency and high-voltage signal output circuit provided in Example 1 of the present utility model;

[0041] Figure 11This is a circuit diagram of a high-frequency and high-voltage signal generating module in a high-frequency and high-voltage signal output circuit provided in the first embodiment of the present utility model;

[0042] Figure 12 This is a circuit diagram of a switch module in a high-frequency and high-voltage signal output circuit provided in Example 1 of the present utility model;

[0043] Figure 13 This is a circuit diagram of a control module in a high-frequency and high-voltage signal output circuit provided in Example 1 of the present utility model;

[0044] In the figure: 101, PWM signal generation module; 102, high-frequency and high-voltage signal generation module; 103, switch module; 104, connector; 105, control module; 121, first switch unit; 122, second switch unit; 123, transformer; 124, feedback module; 131, third switch unit; 132, isolation module. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] It should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to make the disclosure thorough and complete and to fully convey the scope of the present invention to those skilled in the art. In the drawings, the dimensions and relative dimensions of layers and regions may be exaggerated for clarity. Like reference numerals denote like elements throughout.

[0047] It should be understood that when an element or layer is referred to as being "on," "adjacent to," "connected to," or "coupled to" another element or layer, it may be directly on, adjacent to, connected to, or coupled to the other element or layer, or there may be intervening elements or layers. Conversely, when an element is referred to as being "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" another element or layer, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers, and / or parts, these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are merely used to distinguish one element, component, region, layer, or part from another element, component, region, layer, or part. Therefore, without departing from the teachings of the present invention, the first element, component, region, layer, or part discussed below may be represented as a second element, component, region, layer, or part.

[0048] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein for convenience of description to describe the relationship of one element or feature shown in the figures to other elements or features. It should be understood that the spatially relative terms are intended to include different orientations of the device in use and operation in addition to the orientations shown in the figures. For example, if the device in the drawings is flipped, then the elements or features described as "under" or "beneath" or "beneath" the other elements will be oriented as "over" the other elements or features. Thus, the exemplary terms "under" and "under" may include both the upper and lower orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations) and the spatial descriptors used herein are interpreted accordingly.

[0049] The purpose of the terms used herein is only to describe specific embodiments and is not intended to limit the present invention. When used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "comprising" and / or "including", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0050] In order to fully understand the present invention, the following description will provide detailed structures and steps to illustrate the technical solutions proposed by the present invention. The preferred embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention may also have other implementation methods.

[0051] Example 1

[0052] This embodiment provides a high-frequency and high-voltage signal output circuit. Figure 1 As shown, it includes: a PWM signal generating module 101, a high-frequency and high-voltage signal generating module 102, a plurality of switch modules 103 and a plurality of connectors 104;

[0053] The PWM signal generating module 101 is used to generate a PWM control signal;

[0054] The power input terminal of the high-frequency and high-voltage signal generating module 102 receives the power supply voltage, and the control terminal of the high-frequency and high-voltage signal generating module 102 is connected to the output terminal of the PWM signal generating module 101 to convert the power supply voltage into a high-frequency and high-voltage signal according to the PWM control signal;

[0055] The input end of each switch module 103 is connected to the first output end of the high-frequency and high-voltage signal generating module 102, the output end of each switch module 103 is correspondingly connected to the first input end of a connector 104, and the second input end of each connector 104 is connected to the second output end of the high-frequency and high-voltage signal generating module 102;

[0056] The multiple switch modules 103 are turned on respectively according to the control signal, so that the multiple connectors 104 respectively output high-frequency voltage signals to the electrical stimulation heads in different areas, so that the electrical stimulation heads work.

[0057] Among them, the PWM signal generation module 101 is used to generate a PWM control signal to control the generation of a high-frequency, high-voltage signal. By adjusting the duty cycle of the PWM control signal, the frequency and amplitude of the output signal can be flexibly controlled to adapt to different skin types and treatment needs. The high-frequency, high-voltage signal generation module 102 converts the power supply voltage into a high-frequency, high-voltage signal, receives a control signal from the PWM signal generation module 101, and adjusts the characteristics of the output high-frequency, high-voltage signal, such as frequency and voltage amplitude, according to the control signal. The high-frequency, high-voltage signal generation module 102 is capable of generating a high-frequency, high-voltage signal suitable for cosmetic treatment, ensuring that the signal can effectively stimulate the skin and achieve the desired therapeutic effect. In addition, by adopting a PWM control method, the output high-frequency, high-voltage signal can be precisely adjusted, thereby improving the safety and effectiveness of the treatment. Each switch module 103 selectively turns on or off according to the instructions of the control signal, and transmits the high-frequency and high-voltage signal to the corresponding connector 104. The switch module 103 realizes the multi-path selection function of the high-frequency and high-voltage signal. By separately turning on the control signals, the switch module 103 can distribute the high-frequency and high-voltage signals to different connectors 104. Each connector is connected to at least one electric stimulation head, and the connectors output high-frequency voltage signals to the electric stimulation heads in different areas respectively. The electric stimulation heads are in contact with the skin and stimulate the surface layer of the skin through electric current. They are usually used to promote blood circulation, stimulate muscle contraction or help skin care products to be better absorbed, thereby achieving multi-area skin treatment, which can cover a larger skin area and improve the uniformity and efficiency of treatment.

[0058] The technical effect of this first embodiment is that, by providing a PWM signal generation module and a high-frequency, high-voltage signal generation module, precise generation and control of high-frequency, high-voltage signals are achieved, effectively distributing the signals to multiple areas of the electrical stimulation head for treatment. The PWM signal generation module provides precise signal regulation, while the high-frequency, high-voltage signal generation module ensures stable output of high-frequency, high-voltage signals. The combination of multiple switch modules and connectors enables efficient treatment of different skin areas, thereby improving the overall effectiveness of anti-wrinkle and anti-aging beauty products and providing more uniform and effective skin beauty treatments.

[0059] As an implementation of the high-frequency and high-voltage signal generating module 102, Figure 2 As shown, the control end of the high-frequency and high-voltage signal generating module 102 includes a first control end and a second control end;

[0060] The high-frequency and high-voltage signal generating module 102 includes a first switch unit 121, a second switch unit 122, and a transformer 123. One end of the first switch unit 121 is connected to the first end of the primary coil of the transformer 123, and one end of the second switch unit 122 is connected to the second end of the primary coil of the transformer 123. The other end of the first switch unit 121 and the other end of the second switch unit 122 are commonly connected to the ground. The control end of the first switch unit 121 is the first control end of the high-frequency and high-voltage signal generating module 102, and the control end of the second switch unit 122 is the second control end of the high-frequency and high-voltage signal generating module 102. The center tap of the primary coil of the transformer 123 is the power input end of the high-frequency and high-voltage signal generating module 102. The first end and the second end of the primary coil of the transformer 123 are the first output end and the second output end of the high-frequency and high-voltage signal generating module 102, respectively.

[0061] The first switch unit 121 and the second switch unit 122 are alternately turned on according to the PWM control signal, so that the transformer 123 converts the power supply voltage into a high-frequency voltage signal.

[0062] The first control terminal and the second control terminal are respectively used to receive the first PWM control signal con1 and the second PWM control signal con2 from the PWM signal generation module 101. The control signals are used to control the on and off states of the first switch unit 121 and the second switch unit 122, thereby affecting the direction of the current flowing through the primary coil of the transformer 123. The first switch unit 121 and the second switch unit 122 are connected to the primary coil of the transformer 123, respectively. Their primary function is to alternately turn on and off according to the PWM signals input from the control terminals, thereby generating a high-frequency alternating current in the primary coil of the transformer 123. Because the control of the two switch units is completely controlled by the PWM signals, the accuracy of their on and off states directly determines the frequency and amplitude of the output signal from the transformer 123. The function of the transformer 123 is to convert the alternating current flowing through the primary coil into a high-frequency, high-voltage signal flowing through the secondary coil through magnetic coupling. The transformer 123 not only boosts the voltage but also isolates the signal, ensuring the stable output of the high-frequency signal. The center tap of the transformer 123 receives the power supply voltage, ensuring that the power supply voltage can generate sufficient alternating current in the primary coil, thereby effectively increasing the amplitude of the output signal.

[0063] The technical effect of this solution is that by introducing a PWM control signal into the first and second control terminals of the high-frequency, high-voltage signal generation module, the alternating conduction of the first and second switch units is controlled, enabling the transformer to effectively convert the power supply voltage into a high-frequency, high-voltage signal. This solution has a compact structure, precise control, high energy conversion efficiency, and signal output stability. It not only provides efficient and stable high-frequency voltage signals for skin care devices, but also enables flexible adjustment of signal output characteristics through PWM control, thereby better meeting diverse beauty and treatment needs.

[0064] As an example, Figure 3 As shown, the first switch unit 121 is a first MOS transistor Q1, the drain of the first MOS transistor Q1 is one end of the first switch unit 121, the source of the first MOS transistor Q1 is the other end of the first switch unit 121, and the gate of the first MOS transistor Q1 is the control end of the first switch unit 121; the second switch unit 122 is a second MOS transistor Q2, the drain of the second MOS transistor Q2 is one end of the second switch unit 122, the source of the second MOS transistor Q2 is the other end of the second switch unit 122, and the gate of the second MOS transistor Q2 is the control end of the second switch unit 122. The high-frequency and high-voltage signal generation module 102 also includes a fourth resistor R4, a sixth resistor R6, a ninth resistor R9, a thirteenth resistor R13, a first diode D1, a third diode D3, a third capacitor C3, a fourth capacitor C4, a transformer T1, and a voltage regulator D2;

[0065] One end of the sixth resistor R6 and the cathode of the first diode D1 are connected together as the first control end of the high-frequency and high-voltage signal generating module 102, which receives the first PWM control signal. The other end of the sixth resistor R6 is connected to the anode of the first diode D1 and the gate of the first MOS transistor Q1, respectively. The source of the first MOS transistor Q1 is the other end of the first switch unit 121. One end of the ninth resistor R9 and the cathode of the third diode D3 are connected together as the second control end of the high-frequency and high-voltage signal generating module 102. The other end of the ninth resistor R9 is connected to the anode of the third diode D3 and the second MOS transistor Q2, respectively. A gate of the fourth resistor R4 is received, one end of the fourth resistor R4 receives the power supply voltage VCC, the other end of the fourth resistor R4 is connected to the center tap of the primary coil of the transformer T1, the first end of the secondary coil of the transformer T1 is connected to one end of the third capacitor C3, the center tap of the secondary coil of the transformer T1 is respectively connected to the second end of the third capacitor C3, the first end of the fourth capacitor C4, one end of the voltage-stabilizing diode D2, and one end of the thirteenth resistor R13, the second end of the secondary coil of the transformer T1 is connected to the second end of the fourth capacitor C4, and the other end of the voltage-stabilizing diode D2 and the other end of the thirteenth resistor R13 are commonly connected to ground.

[0066] The first MOS transistor Q1 acts as a switching element, turning on and off according to a first PWM signal con1 input to the first control terminal. The operating state of the first MOS transistor Q1 directly affects the direction of the current in the primary coil of the transformer T1. When the first MOS transistor Q1 is on, current flows from the first terminal of the primary coil of the transformer T1 to the source, forming an alternating current in the primary coil. The second MOS transistor Q2 is controlled in the same manner as the first MOS transistor Q1 and is turned on and off by the second PWM signal con2 from the control terminal. The second MOS transistor Q2 operates alternately with the first MOS transistor Q1. When the second MOS transistor Q2 is on, current flows from the second terminal of the primary coil of the transformer T1 to the source. The alternating operation of the two MOS transistors continuously changes the direction of the current in the primary coil of the transformer T1, inducing a high-frequency voltage signal in the secondary coil. The sixth resistor R6 and the ninth resistor R9 limit the current entering the gate of the MOS transistor, preventing damage to the MOS transistor due to excessive current and ensuring that the PWM signal can stably control the on and off of the MOS transistor. The first diode D1 and the third diode D3 provide a reverse current path between the gate and source, preventing damage from the reverse voltage generated when the MOS transistor is turned on or off, thereby improving the reliability and service life of the MOS transistor. The fourth resistor R4 limits the current entering the primary winding of transformer T1, ensuring that during high-frequency operation, the current does not exceed the value that could cause overheating or damage to transformer T1. The third and fourth capacitors C3 and C4 are used for filtering to eliminate high-frequency noise or fluctuations in the signal. The presence of capacitors smooths the control signal, reducing transient voltage fluctuations generated when the MOS transistor is turned on and off, and improving signal stability, thereby making the high-frequency voltage signal output by transformer T1 more stable. The voltage regulator D2 provides a stable reference voltage. This ensures that the voltage output from transformer T1 is stable during circuit operation, further improving circuit reliability.

[0067] The technical benefit of this circuit lies in: through the collaborative operation of the aforementioned components, this circuit structure achieves a stable output of a high-frequency, high-voltage signal. The coordinated operation of components such as current-limiting resistors, protection diodes, capacitor filtering, and voltage-stabilizing diodes not only provides a stable high-frequency, high-voltage signal, but also offers excellent electromagnetic compatibility and high efficiency, making it suitable for a variety of skin care devices requiring precise current control.

[0068] As an implementation method, Figure 4 As shown, the high-frequency and high-voltage signal generating module 102 also includes a feedback module 124, one end of the feedback module 124, the other end of the first switch unit 121 and the other end of the second switch unit 122 are connected in common, and the other end of the feedback module 124 is grounded; the feedback module 124 is used to collect the working status of the first switch unit 121 or the second switch unit 122.

[0069] Among them, the main function of the feedback module 124 is to monitor the working status of the first switch unit 121 and the second switch unit 122 in real time to ensure the stability and safety of the high-frequency and high-voltage signal generation module 102. One end of the feedback module 124 is connected to the common connection point of the first switch unit 121 and the second switch unit 122, and the other end is grounded. By monitoring the voltage or current of this common connection point, the feedback module 124 can determine the on or off state of the switch unit. The feedback module 124 feeds back the collected working status information to the control system for adjusting the PWM signal or other control parameters to ensure that the working status of the switch unit meets expectations, thereby maintaining the stability of the high-frequency and high-voltage signal generation. If the feedback module 124 detects that the switch unit has an abnormal working state, such as overcurrent or overheating, it can trigger a protection mechanism to prevent circuit damage.

[0070] The technical effect of this embodiment is that by real-time monitoring and feedback of the working status of the switching unit, the feedback module can effectively prevent abnormal situations and improve the reliability of the entire high-frequency and high-voltage signal output circuit. The existence of the feedback module enables the system to be dynamically adjusted according to actual conditions to form closed-loop control, thereby improving the system's response speed and control accuracy.

[0071] As an example, Figure 5 As shown, the feedback module 124 includes a fourteenth resistor R14 and a fifteenth resistor R15. One end of the fourteenth resistor R14 and one end of the fifteenth resistor R15 are connected together as one end of the feedback module 124. The other end of the fourteenth resistor R14 is the feedback end of the feedback module 124, and the other end of the fifteenth resistor R15 is the other end of the feedback module 124.

[0072] The primary function of the fourteenth resistor R14 is to transmit the monitoring signal to the control module 105, sampling the voltage and dividing it to provide a signal level representing the current state of the switch unit. The fifteenth resistor R15 and the fourteenth resistor R14 form a voltage divider circuit, which together divides the voltage, enabling the feedback module 124 to accurately collect the operating status signal of the switch unit. The fifteenth resistor R15 and the fourteenth resistor R14 together form a feedback network, ensuring that the voltage division ratio of the feedback signal is appropriate, thereby enabling the control module to effectively monitor and adjust the operating state of the switch unit.

[0073] The technical effect of this embodiment is that, through the voltage-dividing effect of the fourteenth and fifteenth resistors, the feedback module can accurately reflect the working state of the switch unit and provide a real-time feedback signal to the control module.

[0074] Among them, for the switch module 103, as an implementation method, Figure 6As shown, each switch module 103 includes a third switch unit 131 and an isolation module 132. The power supply end of the isolation module 132 is connected to the power supply voltage, the first input end of the isolation module 132 is the input end of the switch module 103, the first output end of the isolation module 132 is connected to one end of the third switch unit 131, the second output end of the isolation module 132 is the output end of the switch module 103, the other end of the third switch unit 131 is grounded, and the control end of the third switch unit 131 is the control end of the switch module 103; when the third switch unit 131 is turned on, the isolation module 132 connects the input end and the output end of the switch module 103.

[0075] Among them, the third switch unit 131 is controlled to be turned on or off according to the control signal of the switch module 103. The third switch unit 131 is usually a MOS tube or other type of electronic switch. When the control signal turns it on, a low impedance path is formed, enabling the isolation module 132 to transmit the input end signal to the output end. The main function of the isolation module 132 is to isolate the input signal from the output signal through an electrical isolation device (such as an optocoupler, a transformer, etc.), which can prevent the power supply voltage or other interference signals from interfering with the control circuit. When the third switch unit 131 is turned on, the isolation module 132 connects the input end and the output end of the switch module 103, completes the signal transmission, and cuts off the signal path when necessary, thereby achieving effective control of the output signal.

[0076] The technical effect of this embodiment is that the third switch unit in each switch module cooperates with the isolation module to ensure isolation between the control signal and the power signal, while providing efficient signal transmission control. This not only improves the reliability of the circuit, but also achieves stable output of high-frequency and high-voltage signals by precisely controlling the on and off of the switch module, meeting the strict signal control requirements of skin anti-wrinkle and aging beauty products.

[0077] As an example, Figure 7As shown, the third switch unit 131 is a third MOS transistor Q3, the drain of the third MOS transistor Q3 is one end of the third switch unit 131, the source of the third MOS transistor Q3 is the other end of the third switch unit 131, and the gate of the third MOS transistor Q3 is the control end of the third switch unit 131; the isolation module 132 is an optocoupler device M1, the first input end of the optocoupler device M1 is the power supply end of the isolation module 132, the second input end of the optocoupler device M1 is the second input end of the isolation module 132, and the first output end of the optocoupler device M1 is the first output end of the isolation module 132 The second output end of the optocoupler device M1 is the second output end of the isolation module 132; the switch module 103 further includes a first resistor R1, a second resistor R2, and a third resistor R3. One end of the first resistor R1 is the power supply end of the switch module 103, and the other end of the first resistor R1 is connected to the first input end of the optocoupler device M1. One end of the third resistor R3 is the control end of the switch module 103, and the other end of the third resistor R3 is respectively connected to the gate of the third MOS transistor Q3 and one end of the second resistor R2. The other end of the second resistor R2 and the source of the third MOS transistor Q3 are commonly grounded.

[0078] Among them, the third MOS transistor Q3 acts as a switching element, controlling the on / off output of the high-frequency voltage signal. Through gate control, the third MOS transistor Q3 can be quickly turned on or off, achieving effective switching control of the high-frequency signal. The optocoupler device M1 provides electrical isolation, ensuring safe isolation between the control signal and the high-voltage circuit. The optocoupler device M1 achieves electrical isolation through photoelectric conversion, protecting the control circuit from high voltage, improving the system's anti-interference capability, and ensuring the accuracy of signal transmission. The first resistor R1 limits the current flowing through the input terminal of the optocoupler device M1 to prevent the optocoupler device M1 from overloading. The second resistor R2 is used to stabilize the gate voltage to prevent the third MOS transistor Q3 from being mis-turned on. The third resistor R3 performs the functions of current limiting and gate protection, ensuring that the control signal can safely and effectively drive the third MOS transistor Q3.

[0079] The technical effect of this embodiment is that through the cooperation of the third MOS tube and the optocoupler device, fast and efficient high-frequency signal switching control is achieved, and the electrical isolation provided ensures the safe isolation of the control circuit and the high-voltage circuit, preventing the high voltage from interfering with and damaging the control circuit, thereby improving the safety of the system.

[0080] As an implementation method, Figure 8 As shown, the high-frequency high-voltage signal output circuit further includes a control module 105, the output end of the control module 105 is respectively connected to the input end of the PWM signal generating module 101 and the control end of each switch module 103;

[0081] The control module 105 sends a square wave signal to the PWM signal generation module 101, so that the PWM signal generation module 101 generates a PWM control signal, so that the high-frequency and high-voltage signal generation module 102 outputs a high-frequency and high-voltage signal, and controls multiple switch modules 103 to be turned on respectively, so that the multiple connectors 104 output high-frequency voltage signals to the electrical stimulation heads in different areas, so that the electrical stimulation heads work.

[0082] Among them, the control module 105 serves as the core control component of the entire circuit. The control module 105 sends a square wave signal to the PWM signal generation module 101 to instruct the generation of the corresponding PWM control signal. At the same time, the control module 105 sends a control signal to each switch module 103 to control the conduction of the switch modules 103. The control module 105 realizes the unified coordination of the entire circuit, ensuring that the PWM signal generation module 101 and the switch module 103 work according to the set timing. Through the precise control of the PWM signal generation module 101 and each switch module 103, the stable generation and output of the high-frequency and high-voltage signal are effectively guaranteed, and the frequency and duty cycle of the signal can be flexibly adjusted according to different working requirements, thereby achieving effective stimulation and beauty effects of the electrical stimulation head on different parts of the skin.

[0083] As an implementation method, Figure 9 As shown, the high-frequency high-voltage signal output circuit also includes a temperature detection module 106, which is connected to the connector 104 and the control module 105 respectively; the control module 105 shuts down when it detects that the temperature of the electrode of the connector 104 exceeds a preset value through the temperature detection module 106.

[0084] Among them, the control module 105 monitors the temperature of the connector 104 electrode in real time through the temperature detection module 106. The temperature detection module 106 can be a temperature sensor or a thermistor or other device. When it is detected that the electrode temperature exceeds the preset value, a shutdown operation is performed to ensure that the electrode temperature will not be too high during the treatment process, thereby protecting the skin safety and avoiding safety hazards such as burns caused by overheating.

[0085] The following describes the first embodiment in detail through a specific circuit structure:

[0086] like Figure 10 The circuit diagram of the power supply module is shown. The power supply module supplies power to the high-frequency and high-voltage signal generating module 102. Figure 10The circuit connection relationship is as follows: Pin 2 of chip U4 is connected to Pin 27 of chip U3 and one end of resistor R50, receiving the control signal PWM_1 output by chip U3; Pin 6 of chip U4 is connected to power supply terminal VBAT, one end of capacitor C24, one end of resistor R19 and one end of magnetic core inductor L3; Pin 7 of chip U4 is connected to the other end of resistor R19 and the gate of MOS tube Q6, the source of MOS tube Q6 is grounded, and the drain of MOS tube Q6 is connected to The other end of the magnetic core inductor L3 is connected to the anode of the Zener diode D9. The cathode of the Zener diode D9 is respectively connected to the positive electrode of the polarity capacitor C23, one end of the capacitor C15, one end of the capacitor C16, one end of the capacitor C17, one end of the capacitor C18, and the positive electrode of the polarity capacitor C19, forming a voltage output end. The negative electrode of the polarity capacitor C23, the other end of the capacitor C15, the other end of the capacitor C16, the other end of the capacitor C17, the other end of the capacitor C18, and the negative electrode of the polarity capacitor C19 are commonly connected to ground.

[0087] like Figure 11 The figure shows a circuit diagram of the high-frequency signal generating module 102. The connection relationship of the high-frequency signal generating module 102 is as follows: Pin 3 of the chip U5 is respectively connected to one end of the resistor R10 and one end of the resistor R12, the other end of the resistor R10 receives the control signal PWM_3 output by the chip U3, and the other end of the resistor R12 receives the control signal PWM_2 output by the chip U3. Pin 7 of the chip U5 is respectively connected to one end of the resistor R6 and the cathode of the diode D1, the other end of the resistor R6 is respectively connected to the anode of the diode D1 and the gate of the MOS transistor Q1, the source of the MOS transistor Q1 is connected to the source of the MOS transistor Q1, one end of the resistor R25, and one end of the resistor R26. The other end of the resistor R25 is grounded. The resistor R26 is connected to the cathode of the diode D1. The other end is the feedback end RN. Pin 5 of chip U5 is respectively connected to one end of resistor R9 and the cathode of diode D3. The other end of resistor R9 is respectively connected to the anode of diode D3 and the gate of MOS tube Q2. One end of resistor R4 receives power supply voltage VCC. The other end of resistor R4 is connected to the center tap of the primary coil of transformer T1. The first end of the secondary coil of transformer T1 is connected to one end of capacitor C3. The center tap of the secondary coil of transformer T1 is respectively connected to the second end of capacitor C3, the first end of capacitor C4, one end of voltage-stabilizing tube D2 and one end of resistor R13. The second end of the secondary coil of transformer T1 is connected to the second end of capacitor C4. The other end of voltage-stabilizing tube D2 and the other end of resistor R11 are commonly connected to ground.

[0088] like Figure 13The circuit diagram of switch module 103 is shown. Switch module 103 includes three switch modules, each of which is connected as follows: one end of resistor R1 receives power supply voltage VCC; the other end of resistor R1 is connected to the first input end of optocoupler M1; the first output end of optocoupler M1 is connected to the drain of MOS transistor Q3; one end of resistor R3 serves as control terminal K1; the other end of resistor R3 is connected to the gate of MOS transistor Q3 and one end of resistor R2; the other end of resistor R2 and the source of MOS transistor Q3 are connected to ground. The second input end of optocoupler M1 is connected to the first output end of high-frequency, high-voltage signal generation module 102; the second output end of optocoupler M1 is connected to the first end of connector J1; and the second end of connector J1 is connected to the second output end of the high-frequency, high-voltage signal generation module. One end of resistor R61 receives power supply voltage VCC. The other end of resistor R61 is connected to the first input end of optocoupler M2. The first output end of optocoupler M2 is connected to the drain of MOS transistor Q4. One end of resistor R63 serves as control terminal K2. The other end of resistor R63 is connected to the gate of MOS transistor Q4 and one end of resistor R62. The other end of resistor R62 and the source of MOS transistor Q4 are connected to ground. The second input end of optocoupler M2 is connected to the first output end of high-frequency, high-voltage signal generation module 102. The second output end of optocoupler M2 is connected to the first end of connector J2. The second end of connector J2 is connected to the second output end of high-frequency, high-voltage signal generation module 102. One end of resistor R81 receives power supply voltage VCC. The other end of resistor R81 is connected to the first input end of optocoupler M3. The first output end of optocoupler M3 is connected to the drain of MOS transistor Q5. One end of resistor R83 serves as control terminal K3. The other end of resistor R83 is connected to the gate of MOS transistor Q5 and one end of resistor R82. The other end of resistor R82 and the source of MOS transistor Q5 are connected to ground. The second input end of optocoupler M3 is connected to the first output end of the high-frequency, high-voltage signal generation module. The second output end of optocoupler M3 is connected to the first end of connector J3. The second end of connector J3 is connected to the second output end of the high-frequency, high-voltage signal generation module.

[0089] like Figure 13 Figure 1 shows a circuit diagram of the control module 105. The control module 105 includes a chip U3. The connection relationship between chip U3 and other components is as follows: pin 27 of chip U3 outputs the control signal PWM_1, pin 13 of chip U3 outputs the control signal PWM_2, pin 10 of chip U3 outputs the control signal PWM_3, pin 20 of chip U3 is connected to the control terminal K1 of the switch module, pin 19 of chip U3 is connected to the control terminal K2 of the switch module, pin 18 of chip U3 is connected to the control terminal K3 of the switch module, and pin 14 of chip U3 is connected to the feedback terminal RN of the high-frequency and high-voltage signal generation module.

[0090] The circuit operates as follows: When chip U3 receives the required 3.3V operating voltage, LED1 illuminates steadily green, indicating the system is in standby mode. When switch K1 is pressed and held for three seconds, LED2 flashes blue, indicating the system is in power-on mode. At this point, chip U3 synchronously outputs the PWM_1 pulse signal via pin 27 (PB4), which controls the conduction state of MOSFET Q6 via driver chip U4 to adjust the boost voltage. Pins 10 (PA4) and 13 (PA7) of synchronous chip U3 output high-frequency 1MHz pulse signals PWM_2 and PWM_3, respectively, which control the MOSFET driver chip U5 in a forward and reverse manner, thereby driving the high-side MOSFET Q1 and low-side MOSFET Q2 to alternately turn on and off. Then, through the isolated high-frequency inverter transformer T1, transformer T1 includes a primary winding consisting of two sets of identical coils with center taps, and a secondary winding consisting of two sets of identical coils with center taps that are larger than the primary turns. Transformer T1 is a transformer made of nickel-zinc ferrite. The primary of transformer T1 is connected to the power supply terminal generated by the boost circuit through the center tap 3 pin. MOS transistors Q2 and MOS transistors Q3 are connected to pins 1 and 5 of the primary coil of transformer T1, providing converted energy for transformer T1. After the energy conversion of transformer T1, a high-frequency, high-voltage electrical signal is obtained between the output terminals A and B of the secondary coil to stimulate skin tissue. After the inverter is coupled and boosted, high-frequency voltages A and B are generated. After the obtained high-frequency, high-voltage signals are controlled by chip U3, K1, K2, and K3 to control the corresponding pins 3 and 4 of the isolation optocoupler (M1 / M2 / M3), which are connected to the output A terminal of the inverter to the output connectors J1, J2, J3 and other corresponding electrical stimulation heads for stimulating the skin to achieve therapeutic effects.

[0091] Example 2

[0092] The second embodiment provides a skin beauty device, including the high-frequency and high-voltage signal output circuit provided in the first embodiment.

[0093] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A high-frequency and high-voltage signal output circuit, characterized in that: include: PWM signal generation module, high-frequency and high-voltage signal generation module, multiple switch modules and multiple connectors; The PWM signal generating module is used to generate a PWM control signal; The power input terminal of the high-frequency and high-voltage signal generating module receives the power supply voltage, and the control terminal of the high-frequency and high-voltage signal generating module is connected to the output terminal of the PWM signal generating module to convert the power supply voltage into a high-frequency and high-voltage signal according to the PWM control signal; The input end of each switch module is connected to the first output end of the high-frequency and high-voltage signal generating module, the output end of each switch module is correspondingly connected to the first input end of a connector, and the second input end of each connector is connected to the second output end of the high-frequency and high-voltage signal generating module; The multiple switch modules are turned on respectively according to the control signal, so that the multiple connectors respectively output high-frequency voltage signals to the electrical stimulation heads in different areas, so that the electrical stimulation heads work.

2. The high-frequency and high-voltage signal output circuit according to claim 1, wherein: The control end of the high-frequency and high-voltage signal generating module includes a first control end and a second control end; The high-frequency and high-voltage signal generating module includes a first switch unit, a second switch unit, and a transformer, one end of the first switch unit is connected to the first end of the primary coil of the transformer, one end of the second switch unit is connected to the second end of the primary coil of the transformer, the other end of the first switch unit and the other end of the second switch unit are commonly connected to the ground, the control end of the first switch unit is the first control end of the high-frequency and high-voltage signal generating module, the control end of the second switch unit is the second control end of the high-frequency and high-voltage signal generating module, the center tap of the primary coil of the transformer is the power input end of the high-frequency and high-voltage signal generating module, and the first end and the second end of the secondary coil of the transformer are respectively the first output end and the second output end of the high-frequency and high-voltage signal generating module; The first switch unit and the second switch unit are alternately turned on according to the PWM control signal, so that the transformer converts the power supply voltage into a high-frequency voltage signal.

3. The high-frequency and high-voltage signal output circuit according to claim 2, wherein: The first switch unit is a first MOS transistor, the drain of the first MOS transistor is one end of the first switch unit, the source of the first MOS transistor is the other end of the first switch unit, and the gate of the first MOS transistor is the control end of the first switch unit; The second switch unit is a second MOS transistor, the drain of the second MOS transistor is one end of the second switch unit, the source of the second MOS transistor is the other end of the second switch unit, and the gate of the second MOS transistor is the control end of the second switch unit.

4. The high-frequency and high-voltage signal output circuit according to claim 3, wherein: The high-frequency and high-voltage signal generating module further includes a fourth resistor, a sixth resistor, a ninth resistor, a thirteenth resistor, a first diode, a third diode, a third capacitor, a fourth capacitor and a voltage regulator tube; One end of the sixth resistor and the cathode of the first diode are connected together to form the first control end of the high-frequency and high-voltage signal generating module. The other end of the sixth resistor is connected to the anode of the first diode and the gate of the first MOS transistor, respectively. The source of the first MOS transistor is the other end of the first switch unit. One end of the ninth resistor and the cathode of the third diode are connected together to form the second control end of the high-frequency and high-voltage signal generating module. The other end of the ninth resistor is connected to the anode of the third diode and the gate of the second MOS transistor, respectively. One end of the fourth resistor receives the power supply voltage. The other end of the fourth resistor is connected to the center tap of the primary coil of the transformer. The first end of the secondary coil of the transformer is connected to one end of the third capacitor. The center tap of the secondary coil of the transformer is connected to the second end of the third capacitor, the first end of the fourth capacitor, one end of the voltage regulator diode, and one end of the thirteenth resistor, respectively. The second end of the secondary coil of the transformer is connected to the second end of the fourth capacitor. The other end of the voltage regulator diode and the other end of the thirteenth resistor are connected to ground.

5. The high-frequency and high-voltage signal output circuit according to claim 2, wherein: The high-frequency and high-voltage signal generating module further includes a feedback module, one end of the feedback module, the other end of the first switch unit, and the other end of the second switch unit are commonly connected, and the other end of the feedback module is grounded; The feedback module is used to collect the working status of the first switch unit or the second switch unit.

6. The high-frequency and high-voltage signal output circuit according to claim 1, wherein: Each switch module includes a third switch unit and an isolation module, wherein the power supply end of the isolation module is connected to the power supply voltage, the first input end of the isolation module is the input end of the switch module, the first output end of the isolation module is connected to one end of the third switch unit, the second output end of the isolation module is the output end of the switch module, the other end of the third switch unit is grounded, and the control end of the third switch unit is the control end of the switch module; When the third switch unit is turned on, the isolation module connects the input end and the output end of the switch module.

7. The high-frequency and high-voltage signal output circuit according to claim 6, wherein: The third switch unit is a third MOS transistor, the drain of the third MOS transistor is one end of the third switch unit, the source of the third MOS transistor is the other end of the third switch unit, and the gate of the third MOS transistor is the control end of the third switch unit; The isolation module is an optocoupler device, the first input end of the optocoupler device is the power supply end of the isolation module, the second input end of the optocoupler device is the second input end of the isolation module, the first output end of the optocoupler device is the first output end of the isolation module, and the second output end of the optocoupler device is the second output end of the isolation module; The switch module further includes a first resistor, a second resistor, and a third resistor. One end of the first resistor serves as a power supply terminal of the switch module, and the other end of the first resistor is connected to the first input terminal of the optocoupler device. One end of the third resistor serves as a control terminal of the switch module, and the other end of the third resistor is respectively connected to the gate of the third MOS tube and one end of the second resistor. The other end of the second resistor and the source of the third MOS tube are commonly grounded.

8. The high-frequency and high-voltage signal output circuit according to claim 1, wherein: The high-frequency and high-voltage signal output circuit further includes a control module, wherein the output end of the control module is respectively connected to the input end of the PWM signal generating module and the control end of each switch module; The control module sends a square wave signal to the PWM signal generation module, so that the PWM signal generation module generates a PWM control signal, so that the high-frequency and high-voltage signal generation module outputs a high-frequency and high-voltage signal, and controls the multiple switch modules to be turned on respectively, so that the multiple connectors respectively output high-frequency voltage signals to the electrical stimulation heads in different areas, so that the electrical stimulation heads work.

9. The high-frequency and high-voltage signal output circuit according to claim 8, wherein: The high-frequency and high-voltage signal output circuit further includes a temperature detection module, which is connected to the connector and the control module respectively; The control module shuts down when the temperature of the connector electrode is detected by the temperature detection module to be higher than a preset value.

10. A skin beauty instrument, characterized in that: include: The high-frequency and high-voltage signal output circuit according to any one of claims 1 to 9.

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