A cosmetic instrument

Abstract

The application discloses a cosmetic instrument. The cosmetic instrument comprises a radio frequency module, an output electrode, a detection module and a control module. The radio frequency module is used for outputting a radio frequency signal. The output electrode is connected with the radio frequency module and is used for transmitting the radio frequency signal to the skin. The detection module is connected between the radio frequency module and the output electrode and is used for detecting a detection signal between the output electrode and the skin when the output electrode contacts the skin. The control module is connected with the detection module and the radio frequency module respectively and is used for calculating a skin impedance value according to the detection signal and adjusting the radio frequency signal output by the radio frequency module according to the skin impedance value. The technical scheme provided by the embodiment can accurately detect the impedance value of the human skin, adjust the radio frequency signal output by the cosmetic instrument according to the impedance value of the human skin, and improve the use experience of the user.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cosmetic instrument technology, and in particular to a cosmetic instrument. BACKGROUND

[0002] The existing radio frequency cosmetic instrument is a non-invasive and non-invasive safe cosmetic device. When the power radio frequency energy based on a specific waveform acts on human skin, it can improve the morphology of the skin. By acting on the subject's skin with a radio frequency output electrode, a conduction current and a displacement current flow through the human skin to form internal heating, promote collagen synthesis, accelerate regeneration, collagen fiber contraction and tightening, increase the thickness and density of the dermis layer, tighten the skin, enhance skin elasticity, and achieve the effect of improving and eliminating wrinkles.

[0003] However, the existing radio frequency cosmetic instrument cannot accurately detect the impedance value of human skin, and cannot perform targeted cosmetic massage according to the impedance value of human skin, resulting in poor user experience. SUMMARY

[0004] The present application provides a cosmetic instrument to solve the problem that the existing radio frequency cosmetic instrument cannot accurately detect the impedance of human skin, cannot perform targeted cosmetic massage according to the resistance value of human skin, and the user experience is poor.

[0005] The present application provides a cosmetic instrument, comprising:

[0006] A radio frequency module for outputting a radio frequency signal;

[0007] An output electrode connected to the radio frequency module, the output electrode for transmitting a radio frequency signal to the skin;

[0008] A detection module connected between the radio frequency module and the output electrode, the detection module for detecting a detection signal between the output electrode and the skin when the output electrode contacts the skin;

[0009] A control module connected to the detection module and the radio frequency module, the control module for calculating the skin impedance value according to the detection signal, and adjusting the radio frequency signal output by the radio frequency module according to the skin impedance value.

[0010] Optionally, the output electrode comprises:

[0011] A first electrode and a second electrode, the first electrode and the second electrode being respectively connected to the radio frequency module, the first electrode and the second electrode being used to transmit a radio frequency signal to the skin.

[0012] Optionally, the detection module comprises:

[0013] A sampling unit, a voltage dividing unit, a current dividing unit and a test terminal;

[0014] The sampling unit is connected in series with the first electrode and the second electrode, and the shunt unit is connected in parallel with the first electrode and the second electrode;

[0015] The voltage dividing unit is connected between the test end and the sampling unit, and the control module is connected with the test end, and the control module is used for determining the skin impedance value between the first electrode and the second electrode according to the voltage information of the test end.

[0016] Optionally, the voltage dividing unit comprises a first voltage dividing unit, a second voltage dividing unit and a third voltage dividing unit; the test end comprises a first test end, a second test end and a third test end;

[0017] The first end of the sampling unit is connected with the first end of the first voltage dividing unit and the first output end of the radio frequency module, the second end of the sampling unit is connected with the first electrode, the first end of the shunt unit and the first end of the second voltage dividing unit, the second end of the shunt unit is connected with the second electrode, the first end of the third voltage dividing unit and the second output end of the radio frequency module;

[0018] The second end of the first voltage dividing unit, the second end of the second voltage dividing unit and the second end of the third voltage dividing unit are grounded;

[0019] The third end of the first voltage dividing unit is connected with the first test end, the third end of the second voltage dividing unit is connected with the second test end, and the third end of the third voltage dividing unit is connected with the third test end.

[0020] Optionally, the first voltage dividing unit comprises a first resistor and a second resistor; the first end of the first resistor is connected with the first output end of the radio frequency module and the first end of the sampling unit, the second end of the first resistor is connected with the first end of the second resistor and the first test end, and the second end of the second resistor is grounded;

[0021] The second voltage dividing unit comprises a third resistor and a fourth resistor; the first end of the third resistor is connected with the second end of the sampling unit, the first electrode and the first end of the shunt unit, the second end of the third resistor is connected with the first end of the fourth resistor and the second test end, and the second end of the fourth resistor is grounded;

[0022] The third voltage dividing unit comprises a fifth resistor and a sixth resistor; the first end of the fifth resistor is connected with the second output end of the radio frequency module, the second electrode and the second end of the shunt unit, the second end of the fifth resistor is connected with the first end of the sixth resistor and the third test end, and the second end of the sixth resistor is grounded.

[0023] Optionally, the detection module further comprises:

[0024] The filter unit is arranged between the test end and the voltage dividing unit, and the filter unit is used for converting the alternating current signal processed by the voltage dividing unit into a direct current signal.

[0025] Optionally, the filtering unit comprises:

[0026] The first capacitor, the second capacitor, the seventh resistor and the eighth resistor;

[0027] The first end of the first capacitor is connected with the first end of the seventh resistor, the second end of the first capacitor is grounded, the second end of the seventh resistor is connected with the first end of the eighth resistor and the first end of the second capacitor, the second end of the first capacitor is grounded, and the second end of the eighth resistor is connected with the voltage dividing unit.

[0028] Optionally, the cosmetic instrument further comprises:

[0029] The EMS signal generation module is connected with the control module and the output electrode, and is used for outputting an EMS signal to the output electrode in response to a control signal of the control module.

[0030] The solid-state relay is connected with the EMS signal generation module, the radio frequency module and the control module respectively, and is used for controlling the radio frequency module or the EMS signal generation module to output a signal to the output electrode according to a control signal of the control module.

[0031] Optionally, the cosmetic instrument further comprises:

[0032] The displacement sensor is connected with the control module, and is used for collecting position information of the output electrode.

[0033] The control module is used for determining a movement state of the output electrode according to the position information, and adjusting a radio frequency signal output by the radio frequency module according to the movement state.

[0034] Optionally, the cosmetic instrument further comprises:

[0035] The inverter is connected with the control module, and is used for generating a first control signal and a second control signal, the potentials of the first control signal and the second control signal being opposite.

[0036] The technical scheme of the embodiment of the present application transmits a radio frequency signal to the skin through the output electrode, and detects a detection signal between the output electrode and the skin through the detection module connected between the radio frequency module and the output electrode when the output electrode contacts the skin. The control module calculates a skin impedance value according to the received detection signal, and adjusts a radio frequency signal output by the radio frequency module according to the skin impedance value. The radio frequency signal output by the cosmetic instrument is matched with the impedance value of the human body acted on by the current output electrode, and the use experience of the user is improved.

[0037] It is to be understood that the details set forth herein do not limit the scope of the embodiments of the application to the specific embodiments described. The foregoing detailed description has set forth various embodiments of the devices and / or processes via the use of specific terminology. However, embodiments of the application are not necessarily limited to those described, but can be practiced with the BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0039] Figure 1 is a structural schematic diagram of a cosmetic instrument provided by an embodiment of the present application;

[0040] Figure 2 is a structural schematic diagram of another cosmetic instrument provided by an embodiment of the present application;

[0041] Figure 3 is a structural schematic diagram of still another cosmetic instrument provided by an embodiment of the present application;

[0042] Figure 4 is a structural schematic diagram of still another cosmetic instrument provided by an embodiment of the present application;

[0043] Figure 5 is a structural schematic diagram of still another cosmetic instrument provided by an embodiment of the present application;

[0044] Figure 6 is a structural schematic diagram of still another cosmetic instrument provided by an embodiment of the present application;

[0045] Figure 7 is a structural schematic diagram of still another cosmetic instrument provided by an embodiment of the present application;

[0046] Figure 8 is a structural schematic diagram of still another cosmetic instrument provided by an embodiment of the present application. DETAILED DESCRIPTION

[0047] In order to make the technical personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should be within the scope of protection of the present application.

[0048] It should be noted that the terms "first", "second" and the like in the description and in the claims of the present application and above-described accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular sequential or chronological order. It should be understood that the data thus used can be interchanged, where appropriate, so that the embodiments of the application described herein can be carried out in other than the order illustrated or described herein. Moreover, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, processes, methods, systems, products, or devices that include a list of steps or units without being limited to those steps or units that are clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0049] Figure 1 is a structural schematic diagram of a beauty instrument provided by an embodiment of the present application. Referring to Figure 1 The beauty instrument 100 provided by the embodiment of the present application comprises a radio frequency module 1, the radio frequency module 1 being configured to output a radio frequency signal; an output electrode 2, the output electrode 2 being connected with the radio frequency module 1, and the output electrode 2 being configured to transmit the radio frequency signal to the skin; a detection module 3, the detection module 3 being connected between the radio frequency module 1 and the output electrode 2, and the detection module 3 being configured to detect a detection signal between the output electrode 2 and the skin when the output electrode 2 contacts the skin; and a control module 4, the control module 4 being connected with the detection module 3 and the radio frequency module 1 respectively, and the control module 4 being configured to calculate a skin impedance value according to the detection signal, and adjust the radio frequency signal output by the radio frequency module 1 according to the skin impedance value.

[0050] Specifically, the radio frequency module 1 can output the radio frequency signal to the output electrode 2 according to the control signal of the control module 4, and the output electrode 2 acts on the surface of the human skin. The detection module 3 can detect the detection signal between the output electrode 2 and the skin. The detection signal can include a voltage signal and a current signal. The detection module 3 outputs the detected detection signal to the control module 4. The control module 4 calculates the skin impedance value between the output electrode 2 and the skin according to the received detection signal, and generates a control signal according to the skin impedance value to adjust the radio frequency signal output by the radio frequency module 1.

[0051] Since the radio frequency signal acts on the surface of the skin, it can make the surface of the skin have a certain vibration, and can locally heat the surface of the human skin, so as to achieve the beauty effect of the human skin. By setting the control module 4 to calculate the skin impedance value between the output electrode 2 and the skin according to the received detection signal, and generate a control signal according to the skin impedance value to adjust the radio frequency signal output by the radio frequency module 1. This setting makes the radio frequency signal output by the beauty instrument match the impedance value of the human body currently acted on by the output electrode 2, which can not only avoid that the output radio frequency signal is too large to burn the surface of the human skin, but also avoid that the output radio frequency signal is too small to affect the user's experience.

[0052] The technical scheme of the embodiment transmits the radio frequency signal to the skin through the output electrode 2, and detects the detection signal between the output electrode 2 and the skin when the output electrode 2 is in contact with the skin through the detection module 3 connected between the radio frequency module 1 and the output electrode 2. The control module 4 calculates the skin impedance value according to the received detection signal, and adjusts the radio frequency signal output by the radio frequency module 1 according to the skin impedance value. The radio frequency signal output by the cosmetic instrument is matched with the impedance value of the human body acted on by the current output electrode 2, and the use experience of the user is improved.

[0053] Optionally, Figure 2 is another structural schematic diagram of a cosmetic instrument provided by the embodiment of the present application. Based on the above embodiment, referring to Figure 2 , the output electrode 2 of the cosmetic instrument 100 provided by the embodiment of the present application can include a first electrode 21 and a second electrode 22, the first electrode 21 and the second electrode 22 are respectively connected with the radio frequency module 1, and the first electrode 21 and the second electrode 22 are used for transmitting the radio frequency signal to the skin.

[0054] Specifically, the first electrode 21 and the second electrode 22 can be metal electrodes or microneedle electrodes. The first electrode 21 and the second electrode 22 can form positive and negative electrodes, so that the alternating radio frequency signal output by the radio frequency module 1 acts on the human skin surface. The detection module 3 can detect the impedance value of the human skin between the first electrode 21 and the second electrode 22, so as to facilitate the control module 4 to adjust the radio frequency signal acting on the human skin between the first electrode 21 and the second electrode 22 according to the detection signal, and further improve the cosmetic experience of the human skin surface between the first electrode 21 and the second electrode 22.

[0055] Optionally, Figure 3 is another structural schematic diagram of a cosmetic instrument provided by the embodiment of the present application. Based on the above embodiment, referring to Figure 3 , the detection module 3 of the cosmetic instrument 100 provided by the embodiment of the present application can include a sampling unit 31, a voltage dividing unit 32, a current dividing unit 33 and a test end 34; the sampling unit 31 is connected in series with the first electrode 21 and the second electrode 22, and the current dividing unit 33 is connected in parallel with the first electrode 21 and the second electrode 22; the voltage dividing unit 32 is connected between the test end 34 and the sampling unit 31, the control module 4 is connected with the test end 34, and the control module 4 is used for determining the skin impedance value between the first electrode 21 and the second electrode 22 according to the voltage information of the test end 34.

[0056] Specifically, the sampling unit 31 can include a resistor R10, and when the output electrode 2 acts on the surface of the human skin, the sampling unit 31 is used to collect the current in the loop composed of the radio frequency module 1, the output electrode 2 and the human skin. The shunt unit 33 can include a resistor R20, and the human skin between the shunt unit 33 and the output electrode 2 is connected in parallel, and the current collected by the sampling unit 31 is shunted, so as to calculate the current value flowing through the human skin.

[0057] The voltage information of the intermediate node of the voltage dividing unit 32 is obtained by the control module 4 through the test terminal 34, and the voltage value of the two ends of the shunt unit 33 is calculated, that is, the voltage value of the two ends of the human skin between the first electrode 21 and the second electrode 22. The control module 4 determines the skin impedance value between the first electrode 21 and the second electrode 22 according to the voltage value of the two ends of the human skin and the current value flowing through the human skin.

[0058] Optionally, on the basis of the above embodiment, continuing to refer to Figure 3 The voltage dividing unit 32 of the beauty instrument 100 provided by the embodiment of the present application includes a first voltage dividing unit 321, a second voltage dividing unit 322 and a third voltage dividing unit 323; the test terminal 34 includes a first test terminal ADC1, a second test terminal ADC2 and a third test terminal ADC3; the first end of the sampling unit 31 is connected with the first end of the first voltage dividing unit 321 and the first output end of the radio frequency module 1, the second end of the sampling unit 31 is connected with the first electrode 21 and the first end of the shunt unit 33 and the first end of the second voltage dividing unit 322, the second end of the shunt unit 33 is connected with the second electrode 22 and the first end of the third voltage dividing unit 323 and the second output end of the radio frequency module 1; the second end of the first voltage dividing unit 321, the second end of the second voltage dividing unit 322 and the second end of the third voltage dividing unit 323 are grounded; the third end of the first voltage dividing unit 321 is connected with the first test terminal ADC1, the third end of the second voltage dividing unit 322 is connected with the second test terminal ADC2, and the third end of the third voltage dividing unit 323 is connected with the third test terminal ADC3.

[0059] Specifically, the first test terminal ADC1 is used to test the voltage V3 of the second terminal of the first voltage dividing unit 321, the voltage V4 of the second terminal of the second voltage dividing unit 322, and the voltage V6 of the second terminal of the third voltage dividing unit 323. According to the voltage dividing ratio of the resistance of the first voltage dividing unit 321, the control module 4 calculates the voltage VI of the first terminal of the sampling unit 31. According to the voltage dividing ratio of the resistance of the second voltage dividing unit 322, the control module 4 calculates the voltage V2 of the second terminal of the sampling unit 31. According to the voltage dividing ratio of the resistance of the third voltage dividing unit 323, the control module 4 calculates the voltage V5 of the first terminal of the third voltage dividing unit 323. According to Ohm's law, the current flowing through the resistance R10 of the sampling unit 31 is I1=(V2-V1) / R10, and the current flowing through the resistance R20 of the shunt unit 33 is I2=(V5-V2) / R20.

[0060] According to Ohm's law, the control module 4 calculates the current I3 flowing through the human skin I3=I1-I2. The voltage V between the first electrode 21 and the second electrode 22 is V=V5-V2, and thus the real-time impedance value R of the human skin between the first electrode 21 and the second electrode 22 can be calculated R=(V5-V2) / (I1-I2). When the output electrode 2 is in contact with the skin, the control module 4 realizes accurate detection of the impedance value of the skin between the output electrode 2 and the skin.

[0061] Optionally, on the basis of the above embodiment, continuing to refer to Figure 3 , the first voltage dividing unit 321 can include a first resistance R1 and a second resistance R2; the first terminal of the first resistance R1 is connected with the first output terminal of the radio frequency module 1 and the first terminal of the sampling unit 31, the second terminal of the first resistance R1 is connected with the first terminal of the second resistance R2 and the first test terminal ADC1, and the second terminal of the second resistance R2 is grounded; the second voltage dividing unit 322 includes a third resistance R3 and a fourth resistance R4; the first terminal of the third resistance R3 is connected with the second terminal of the sampling unit 31, the first electrode 21 and the first terminal of the shunt unit 33, the second terminal of the third resistance R3 is connected with the first terminal of the fourth resistance R4 and the second test terminal ADC2, and the second terminal of the fourth resistance R4 is grounded; the third voltage dividing unit 323 includes a fifth resistance R5 and a sixth resistance R6; the first terminal of the fifth resistance R5 is connected with the second output terminal of the radio frequency module 1, the second electrode 22 and the second terminal of the shunt unit 33, the second terminal of the fifth resistance R5 is connected with the first terminal of the sixth resistance R6 and the third test terminal ADC3, and the second terminal of the sixth resistance R6 is grounded.

[0062] Specifically, the arrangement facilitates calculation of the voltage V1 at the first end of the sampling unit 31 according to the resistance values of the first resistor R1 and the second resistor R2 and the voltage at the first test end ADC1, i.e. the voltage V3 at the second end of the first voltage dividing unit 321. The arrangement facilitates calculation of the voltage V2 at the second end of the sampling unit 31 according to the resistance values of the third resistor R3 and the fourth resistor R4 and the voltage at the second test end ADC2, i.e. the voltage V4 at the second end of the second voltage dividing unit 322. The arrangement facilitates calculation of the voltage V5 at the first end of the third voltage dividing unit 323 according to the resistance values of the fifth resistor R5 and the sixth resistor R6 and the voltage at the third test end ADC3, i.e. the voltage V6 at the second end of the third voltage dividing unit 323.

[0063] Optionally, Figure 4 is another structural schematic diagram of the cosmetic instrument provided in an embodiment of the present application. Based on the above embodiment, referring to Figure 4 The detection module 3 of the cosmetic instrument 100 provided in the embodiment of the present application can further include a filtering unit 35, which is arranged between the test end 34 and the voltage dividing unit 32 and is used to convert the alternating current signal processed by the voltage dividing unit 32 into a direct current signal.

[0064] Specifically, the filtering unit 35 is used to filter the signal-to-noise ratio of the voltage signal or the current signal tested by the control module 4 from the test end 34. The filtering unit 35 converts the alternating current signal processed by the voltage dividing unit 32 into a direct current signal, facilitating identification and processing by the control module 4.

[0065] Optionally, based on the above embodiment, referring to Figure 4 The filtering unit 35 can include a first capacitor C1, a second capacitor C2, a seventh resistor R7 and an eighth resistor R8. The first end of the first capacitor C1 is connected with the first end of the seventh resistor R7, the second end of the first capacitor C1 is grounded, the second end of the seventh resistor R7 is connected with the first end of the eighth resistor R8 and the first end of the second capacitor C2, the second end of the first capacitor C1 is grounded, and the second end of the eighth resistor R8 is connected with the voltage dividing unit 32.

[0066] Specifically, the first capacitor C1 and the second capacitor C2 have an isolation and filtering effect. The first capacitor C1 and the seventh resistor R7 form an RC filter circuit, the second capacitor C2 and the eighth resistor R8 form a filter circuit, and the alternating current signal processed by the voltage dividing unit 32 can be converted into a direct current signal, facilitating identification and processing by the control module 4.

[0067] Optionally, Figure 5 is another structural schematic diagram of the cosmetic instrument provided in an embodiment of the present application. Based on the above embodiment, referring to Figure 5The cosmetic instrument 100 provided by the embodiment of the present application can further comprise: an EMS signal generation module 5, the EMS signal generation module 5 being connected with the control module 4 and the output electrode 2, and the EMS signal generation module 5 being configured to output an EMS signal to the output electrode 2 in response to a control signal of the control module 4; and a solid-state relay 6, the solid-state relay 6 being connected with the EMS signal generation module 5, the radio frequency module 1 and the control module 4 respectively, and the solid-state relay 6 being configured to control the radio frequency module 1 or the EMS signal generation module 5 to output a signal to the output electrode 2 according to a control signal of the control module 4.

[0068] Specifically, the EMS signal generation module 5 is configured to generate a micro-current, and the micro-current generated by the EMS signal generation module 5 acts on the muscles of the human body to stimulate the muscles of the human body and massage the muscles of the human body. The solid-state relay 6 has a small volume, and the use of the solid-state relay 6 can better reduce the volume of the cosmetic device. The solid-state relay 6 also functions to isolate the radio frequency module 1 and the EMS signal generation module 5, thereby avoiding the impact of the large radio frequency signal of the radio frequency module 1 on the EMS signal generation module 5.

[0069] An alternative connection mode is as follows: Figure 6 is a structural schematic diagram of a cosmetic instrument provided by the embodiment of the present application. In combination with Figure 5 and Figure 6 The EMS signal generation module 5 can be connected with the normally open contact 61 of the solid-state relay 6, and the radio frequency module 1 can be connected with the normally closed contact 62 of the solid-state relay 6. When the EMS signal generation module 5 needs to output a micro-current signal, the normally closed contact 62 of the solid-state relay 6 is first disconnected, and then the normally open contact 61 is controlled to be closed, so that the EMS signal generation module 5 outputs the micro-current signal to the human body through the first electrode 21 and the second electrode 22.

[0070] Optionally, Figure 7 is another structural schematic diagram of a cosmetic instrument provided by the embodiment of the present application. Based on the above embodiment, referring to Figure 7 The cosmetic instrument 100 provided by the embodiment of the present application can further comprise: a displacement sensor 7, the displacement sensor 7 being connected with the control module 4, and the displacement sensor 7 being configured to collect position information of the output electrode 2; and the control module 4 being configured to determine a movement state of the output electrode 2 according to the position information, and adjust the radio frequency signal output by the radio frequency module 1 according to the movement state.

[0071] Specifically, since the radio frequency signal is output to the surface of the human skin, the human skin in contact with the output electrode 2 is heated, when the position of the output electrode 2 is unchanged, if the output electrode 2 continuously outputs the radio frequency signal, local overheating is easy to occur, and the human skin is easy to be burned. The position information of the output electrode 2 is detected by the displacement sensor 7, and the position information of the output electrode 2 is output to the control module 4. The control module 4 controls the radio frequency module 1 to output the radio frequency signal or stop outputting the radio frequency signal according to the position information of the output electrode 2.

[0072] An optional application scenario is that, when the position information of the current output electrode 2 is unchanged, the control module 4 controls the radio frequency module 1 to stop outputting the radio frequency signal, and after a delay of a preset time, the control module 4 controls the radio frequency module 1 to output the radio frequency signal, which can better avoid the burning of the human skin by the beauty instrument and the mutual interference between the radio frequency signal and the micro-current signal, and further improve the use experience of the beauty instrument.

[0073] Optionally, Figure 8 is another structure schematic diagram of a beauty instrument provided by an embodiment of the present application. Based on the above-mentioned embodiments, referring to Figure 8 The beauty instrument 100 provided by the embodiment of the present application can further include: an inverter 8, an input end of the inverter 8 being connected with the control module 4, a first output end of the inverter 8 being connected with the first input end of the radio frequency module 1, and a second output end of the inverter 8 being connected with the second input end of the radio frequency module 1, the inverter 8 being used for generating a first control signal and a second control signal, and the electric potential of the first control signal being opposite to that of the second control signal.

[0074] Specifically, the control signal output by the control module 4 is output to the inverter 8. The first output end of the inverter 8 directly outputs the control signal to the first input end of the radio frequency module 1, and the inverter 8 inverses the control signal and outputs the control signal to the second output end of the radio frequency module 1 through the second output end. The radio frequency module 1 generates the radio frequency signal with a sine waveform according to the received control signals with opposite electric potentials.

[0075] It should be understood that the various forms of flow shown above can be reordered, added to, or deleted from. For example, the steps described in the present application can be executed in parallel, in sequence, or in different orders, as long as the desired results of the technical solutions of the present application can be achieved, which are not limited herein.

[0076] The above detailed description does not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent replacement and improvement made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A beauty instrument, characterized in that: include: A radio frequency module, wherein the radio frequency module is used to output a radio frequency signal; an output electrode, connected to the radio frequency module, and configured to transmit the radio frequency signal to the skin; a detection module, the detection module being connected between the radio frequency module and the output electrode, the detection module being configured to detect a detection signal between the output electrode and the skin when the output electrode is in contact with the skin; a control module, the control module being connected to the detection module and the radio frequency module respectively, the control module being configured to calculate a skin impedance value based on the detection signal and to adjust a radio frequency signal output by the radio frequency module based on the skin impedance value; The output electrode includes: a first electrode and a second electrode, the first electrode and the second electrode are respectively connected to the radio frequency module, and the first electrode and the second electrode are used to transmit the radio frequency signal to the skin; The detection module includes: a sampling unit, a voltage dividing unit, a current shunt unit, and a test terminal; the sampling unit is connected in series with the first electrode and the second electrode, and the current shunt unit is connected in parallel with the first electrode and the second electrode; the voltage dividing unit is connected between the test terminal and the sampling unit, and the control module is connected to the test terminal, and the control module is used to determine the skin impedance value between the first electrode and the second electrode based on the voltage information at the test terminal; The voltage dividing unit includes a first voltage dividing unit, a second voltage dividing unit and a third voltage dividing unit; the test end includes a first test end, a second test end and a third test end; The first voltage divider unit includes a first resistor and a second resistor; a first end of the first resistor is connected to the first output end of the RF module and the first end of the sampling unit, a second end of the first resistor is connected to the first end of the second resistor and the first test end, and a second end of the second resistor is grounded; The second voltage dividing unit includes a third resistor and a fourth resistor; a first end of the third resistor is connected to the second end of the sampling unit, the first electrode, and the first end of the shunt unit, a second end of the third resistor is connected to the first end of the fourth resistor and the second test end, and a second end of the fourth resistor is grounded; The third voltage divider unit includes a fifth resistor and a sixth resistor; the first end of the fifth resistor is connected to the second output end of the RF module, the second electrode and the second end of the shunt unit, the second end of the fifth resistor is connected to the first end of the sixth resistor and the third test end, and the second end of the sixth resistor is grounded.

2. The beauty instrument according to claim 1, characterized in that: The first end of the sampling unit is connected to the first end of the first voltage divider unit and the first output end of the radio frequency module, the second end of the sampling unit is connected to the first electrode, the first end of the shunt unit, and the first end of the second voltage divider unit, and the second end of the shunt unit is connected to the second electrode, the first end of the third voltage divider unit, and the second output end of the radio frequency module; The second end of the first voltage dividing unit, the second end of the second voltage dividing unit, and the second end of the third voltage dividing unit are grounded; The third end of the first voltage dividing unit is connected to the first test end, the third end of the second voltage dividing unit is connected to the second test end, and the third end of the third voltage dividing unit is connected to the third test end.

3. The beauty instrument according to claim 2, characterized in that: The detection module further includes: A filter unit is provided between the test end and the voltage divider unit, and is used for converting the AC signal processed by the voltage divider unit into a DC signal.

4. The beauty instrument according to claim 3, characterized in that: The filtering unit comprises: a first capacitor, a second capacitor, a seventh resistor, and an eighth resistor; The first end of the first capacitor is connected to the first end of the seventh resistor, the second end of the first capacitor is grounded, the second end of the seventh resistor is connected to the first end of the eighth resistor and the first end of the second capacitor, the second end of the first capacitor is grounded, and the second end of the eighth resistor is connected to the voltage divider unit.

5. The beauty instrument according to claim 1, characterized in that: The beauty instrument further includes: An EMS signal generating module, the EMS signal generating module being connected to the control module and the output electrode, and the EMS signal generating module being configured to output an EMS signal to the output electrode in response to a control signal from the control module; A solid-state relay is connected to the EMS signal generating module, the radio frequency module and the control module respectively, and the solid-state relay is used to control the radio frequency module or the EMS signal generating module to output a signal to the output electrode according to the control signal of the control module.

6. The beauty instrument according to claim 1, characterized in that: The beauty instrument further includes: a displacement sensor connected to the control module and used to collect position information of the output electrode; The control module is used to determine the movement state of the output electrode according to the position information, and adjust the radio frequency signal output by the radio frequency module according to the movement state.

7. The beauty instrument according to claim 1, characterized in that: The beauty instrument further includes: An inverter, wherein the input end of the inverter is connected to the control module, the first output end of the inverter is connected to the first input end of the RF module, the second output end of the inverter is connected to the second input end of the RF module, and the inverter is used to generate a first control signal and a second control signal, and the potential of the first control signal is opposite to that of the second control signal.

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