CN213484755U

CN213484755U - Multifunctional switching circuit and massage instrument

Info

Publication number: CN213484755U
Application number: CN202022193237.XU
Authority: CN
Inventors: 何江波
Original assignee: Shenzhen Shuliantianxia Intelligent Technology Co Ltd
Current assignee: Shenzhen Shuliantianxia Intelligent Technology Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-06-18
Anticipated expiration: 2030-09-29

Abstract

The embodiment of the utility model provides a relate to switching circuit technical field, disclose a multi-functional switching circuit and massage appearance, multi-functional switching circuit has realized carrying out reasonable switching with EMS RF function and survey skin function through setting up switch circuit, has realized the coordination between each function and has coexisted, has reduced the complexity of equipment, has avoided the mutual independence between a plurality of functions. Meanwhile, the controller controls the EMS/RF control circuit by acquiring the first detection signal, so that the function is accurately scheduled, and the waste of a power supply and the damage to a human body are avoided.

Description

Multifunctional switching circuit and massage instrument

Technical Field

The embodiment of the utility model provides a relate to switching circuit technical field, concretely relates to multi-functional switching circuit and massage appearance.

Background

With the rapid development of science and technology and the increasing improvement of life, more and more women have strong psychology of pursuing beauty, in order to meet the demand, an ultrasonic beauty instrument is invented by people and can be used for shaping, and a power light beauty instrument is invented by people and can be used for removing acnes, whitening and removing wrinkles. Some design RF radio frequency appearance, the regeneration of the skin bottom collagen of stimulation reaches the effect that the skin is compact.

The inventor of the application finds that the existing multifunctional beauty equipment has single function, and when the beauty equipment is used by a user, the beauty equipment is often used by combining various equipment, so that the cost is high, and the beauty equipment is inconvenient to carry.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the embodiment of the utility model provides a multi-functional switching circuit and massage appearance for solve the problem that needs a plurality of equipment combinations to use that exists among the prior art.

According to the utility model discloses an aspect of the embodiment provides a multi-functional switching circuit, multi-functional switching circuit includes: the device comprises a controller, a switch circuit, an EMS/RF control circuit, a skin test circuit, a first contact point and a second contact point;

one end of the switch circuit is electrically connected with the first contact point and the second contact point respectively, and the other end of the switch circuit is electrically connected with the EMS/RF control circuit and the skin test circuit respectively under the control of the controller;

one end of the first contact point is connected with the switch circuit, and the other end of the first contact point is used for contacting a human body;

one end of the second contact point is connected with the switch circuit, and the other end of the second contact point is used for contacting a human body;

the EMS/RF control circuit is electrically connected with the controller and sends an EMS signal or an RF signal under the control of the controller; the EMS/RF control circuit is further configured to transmit a first detection signal flowing through the second contact point to the controller 100;

when the controller controls the switch circuit to electrically connect the first contact point and the second contact point with the EMS/RF control circuit, the controller receives the first detection signal and adjusts the EMS/RF control circuit according to the first detection signal;

and when the controller controls the switch circuit to electrically connect the first contact point and the second contact point with the skin measuring circuit, the controller controls the skin measuring circuit.

According to the embodiment of the utility model, on the other hand, provide a massage appearance, the massage appearance includes above-mentioned embodiment multi-functional switching circuit.

According to the embodiment, the multifunctional switching circuit is provided with the switch circuit, so that the EMS/RF function and the skin measuring function are reasonably switched, the coordination and coexistence among the functions are realized, the complexity of equipment is reduced, and the mutual independence among a plurality of functions is avoided. Meanwhile, the controller controls the EMS/RF control circuit by acquiring the first detection signal and the second detection signal, so that the accurate scheduling of functions is realized, and the waste of power supplies and the damage to human bodies are avoided.

The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 shows a functional frame diagram of a multifunctional switching circuit provided by an embodiment of the present invention;

fig. 2 is a functional block diagram of another multi-functional switching circuit according to an embodiment of the present invention;

fig. 3 shows a circuit diagram of a multifunctional switching circuit provided by an embodiment of the present invention;

fig. 4 is a functional block diagram of another multifunctional switching circuit provided in an embodiment of the present invention;

fig. 5A shows a circuit diagram of a controller provided by an embodiment of the present invention;

fig. 5B shows a voltage stabilizing circuit diagram provided by an embodiment of the present invention;

fig. 6 shows an EMS/RF control circuit diagram provided by an embodiment of the present invention;

fig. 7A shows a skin test circuit diagram provided by an embodiment of the present invention;

fig. 7B shows a simulation diagram of the output of the skin test circuit provided by the embodiment of the present invention;

fig. 7C shows a moisture value curve of the skin measurement result provided by the embodiment of the present invention;

fig. 7D shows a water-oil curve of the skin test results provided by the embodiments of the present invention;

fig. 8 illustrates a second loop detection circuit diagram provided by an embodiment of the present invention;

fig. 9 shows a first loop detection circuit and a third loop detection circuit provided by an embodiment of the present invention;

fig. 10 shows a circuit diagram of a photon driving circuit provided by an embodiment of the present invention;

fig. 11 shows a peltier drive circuit diagram provided by an embodiment of the present invention;

fig. 12A shows a motor driving circuit diagram provided by an embodiment of the present invention;

fig. 12B shows a buzzer circuit diagram provided in the embodiment of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Referring to fig. 1, fig. 1 is a functional block diagram of a multi-functional switching circuit according to an embodiment of the present invention, the multi-functional switching circuit includes: a controller 100, a switching circuit 200, an EMS/RF control circuit 300, a skin test circuit 400, a first contact point TB1, and a second contact point P2.

One end of the switch circuit 200 is electrically connected to the first contact point TB1 and the second contact point P2, and the other end of the switch circuit is electrically connected to the EMS/RF control circuit 300 and the skin test circuit 400 under the control of the controller 100, the switch circuit 200 is an electrically controlled switch circuit 200, and is switched under the control of the controller 100, and the switch circuit 200 can connect the first contact point TB1 and the second contact point P2 to the EMS/RF control circuit 300, and can also electrically connect the first contact point TB1 and the second contact point P2 to the skin test circuit 400, so that the EMS/RF control circuit 300 and the skin test circuit 400 are in contact with the skin through the first contact point TB1 and the second contact point P2, respectively.

One end of the first contact point TB1 is connected to the switch circuit 200, and the other end of the first contact point TB1 is used for contacting a human body, and the first contact point TB1 is an exposed electrode; one end of the second contact point P2 is connected to the switch circuit 200, and the other end is used for contacting the human body, and the second contact point P2 is also an exposed electrode.

The EMS/RF control circuit 300 is electrically connected to the controller 100 and emits an EMS signal or an RF signal under the control of the controller 100; the EMS/RF control circuit 300 is also used to transmit the first detection signal flowing through the second contact point P2 to the controller 100. Since the second contact point P2 has one end contacting the human body and the other end connected to the switching circuit 200, when the switching circuit 200 connects the second contact point P2 to the EMS/RF circuit, the EMS/RF circuit can detect an electrical signal flowing through the second contact point P2 to generate a first detection signal.

When the controller 100 controls the switch circuit 200 to electrically connect the first contact point TB1 and the second contact point P2 to the EMS/RF control circuit 300, the controller 100 receives the first detection signal and adjusts the EMS/RF control circuit 300 according to the first detection signal, that is, the controller 100 controls the EMS/RF circuit to operate. The first detection signal varies in real time according to the magnitude of the facial impedance, the variation also reflects the degree of contact between the first contact point TB1 and the second contact point P2 and the skin, and the tightness of the skin, and the EMS/RF control circuit 300 adjusts the transmission power of the EMS function or RF function according to the first detection signal to treat the skin with optimal power.

When the controller 100 controls the switch circuit 200 to electrically connect the first contact point TB1 and the second contact point P2 with the skin test circuit 400, the controller 100 controls the skin test circuit 400, so that the skin test circuit 400 can be started to test the skin. Due to the control of the switch circuit 200, the skin test circuit 400 and the EMS/RF circuit can only be separately started, and the conflict between the skin test circuit 400 and the EMS/RF function is avoided.

According to the embodiment, the multifunctional switching circuit is provided with the switch circuit 200, so that the EMS/RF function and the skin measuring function are reasonably switched, coordination and coexistence among all functions are realized, the complexity of equipment is reduced, and mutual independence among a plurality of functions is avoided. Meanwhile, the controller 100 controls the EMS/RF control circuit 300 by acquiring the first detection signal and the second detection signal, thereby implementing accurate scheduling of functions and avoiding power waste and damage to a human body.

Further, on the basis of fig. 1, the embodiment of the present application further adds a control to a third load circuit, please refer to fig. 2, and fig. 2 shows a functional framework diagram of a multifunctional switching circuit provided by the embodiment of the present invention, where the multifunctional switching circuit includes: the controller 100, the switching circuit 200, the EMS/RF control circuit 300, the skin test circuit 400, the first contact point TB1, the first loop detection circuit 500, the second contact point P2, the third contact point P1, the third loop detection circuit 700, and the third load circuit.

One end of the first contact point TB1 is connected to the switch circuit 200, and the other end of the first contact point TB1 is used for contacting a human body and is connected to the first loop detection circuit 500, the first contact point TB1 is a bare electrode, that is, the first loop detection circuit 500 can contact the human body through the first contact point TB 1; the first circuit detection circuit 500 is turned on or off under the control of the controller 100, and is configured to detect whether the first contact point TB1 contacts a human body; one end of the second contact point P2 is connected to the switch circuit 200, and the other end is used for contacting the human body, and the second contact point P2 is also an exposed electrode; the third contact point P1 is used for contacting a human body and is connected to the third loop detection circuit 700, and the third loop detection circuit 700 is electrically connected to the controller 100 and is used for detecting a third detection signal between the first contact point TB1 and the third contact point P1 and sending the third detection signal to the controller 100.

When the controller 100 controls the switch circuit 200 to be turned off, the controller 100 starts the first loop detection circuit 500 to obtain a third detection signal, and controls the third load circuit according to the third detection signal. When the third contact point P1 contacts with the skin, the third loop detection circuit 700 obtains a third detection signal flowing through the third contact point P1, and determines whether the third detection signal contacts with the skin, and when the third detection signal contacts with the skin, the controller 100 starts a third load circuit, so that the phenomenon that other functions are started under the condition that the skin is not contacted is avoided, power is wasted, and meanwhile, damage is caused to the human body.

According to the embodiment, the multifunctional switching circuit is provided with the switch circuit 200, so that the EMS/RF function, the skin measuring function and the third-party load function are reasonably switched, the coordination and coexistence among the functions are realized, the complexity of equipment is reduced, and the mutual independence among a plurality of functions is avoided. Meanwhile, the controller 100 controls the EMS/RF control circuit 300 and the third load circuit, respectively, by acquiring the first detection signal and the third detection signal, thereby implementing accurate scheduling of functions and avoiding power waste and damage to a human body.

Further, as shown in fig. 1 and 2, for the EMS/RF control circuit 300, it includes two functions, i.e., an EMS function and an RF function, wherein the RF function is a very important part of the electromagnetic spectrum, and both radio and microwave energies belong to the category of electromagnetic radiation energies, which are commonly referred to as radio frequencies. Radio frequencies, in units of frequency, can range from hundreds of KHZ to hundreds of MHZ. When the radio frequency starts to work, the polarity of the electrode of the electric field in the biological tissue can be changed for millions of times within 1 second, the tissue particles charged in the electric field change the polarity of the electrode by the frequency of the frames, the natural impedance of the dermal tissue generates heat to the action of the electron movement, and the friction caused by the electron movement generates the heating effect of columnar distribution in the deep layer of the skin. This thermal effect initially alters the collagen, causing it to contract, and newly regenerate, leading to dermal remodeling and thickening. The EMS function is known collectively as Electrical Muscle Stimulation, the chinese name Muscle current Stimulation technique. The principle is that motor nerves are directly stimulated through external current to trigger muscle contraction movement, so that the purpose of muscle augmentation or shaping is directly and effectively achieved. The low frequency of the current can continue to effectively move the muscle frequency and if the frequency of use is higher than a certain frequency, the muscle tone begins to drop. The muscles cannot satisfy their neurophysiological conditions and thus cannot achieve a desired exercise effect. In addition, muscles use energy and consume oxygen during exercise.

Therefore, it can be known from the above that, when the EMS/RF control circuit operates in the EMS mode, the frequency of the input circuit is relatively low, and there is an error in measuring the electrical signal passing through the second contact point P2, which results in inaccurate measurement and failure to accurately control the EMS/RF control circuit 300. The embodiment of the present application further provides that a second loop detection circuit 600 is provided; the second loop detection circuit 600 is electrically connected to the second contact point P2, and outputs a second detection signal to the controller 100 after detecting the electrical signal passing through the second contact point P2; the controller 100 controls the EMS/RF control circuit 300 according to the second detection signal. The second loop detection circuit 600 can more sensitively detect the electrical signal passing through the second contact point P2, so as to more accurately obtain the contact condition between the second contact point P2 and the skin, and the controller 100 can more accurately control the EMS/RF control circuit 300 according to the second detection signal.

As shown in fig. 3, the embodiment of the present invention describes the multifunctional switching circuit in more detail. As shown in fig. 3, the switch circuit 200 is an electrically controlled double-pole double-throw switch, wherein a middle point of one path of the double-pole double-throw switch is connected to the first contact point TB1, and a middle point of the other path of the double-pole double-throw switch is connected to the second contact point P2; meanwhile, one throw of the double-pole double-throw switch is electrically connected with the EMS/RF control circuit 300, and the other throw of the double-pole double-throw switch is electrically connected with the skin test circuit 400, that is, the switch circuit 200 can electrically connect the first contact point TB1 and the second contact point P2 with the EMS/RF control circuit 300 or electrically connect the first contact point TB1 and the second contact point P2 with the skin test circuit 400 under the control of the controller 100, and because the double-throw switch is adopted, the first contact point TB1 and the second contact point P2 can only be selected to be electrically connected with the EMS/RF control circuit 300 and the skin test circuit 400, and cannot be connected at the same time.

One end of the first contact point TB1 is connected to one of the double-pole double-throw switches, and the other end is connected to the first loop detection circuit 500 through the thyristor PCR606, the control electrode of the thyristor PCR606 is connected to the KG3 port of the controller 100 through the resistor R43, and the controller 100 controls the on/off of the first thyristor through the control electrode, so as to control the on/off of the first loop detection circuit 500. When the multifunctional switching circuit needs to start a third load circuit, the controller 100 controls the switch circuit 200 to disconnect the first contact point TB1 and the second contact point P2 from the EMS/RF control circuit 300 and the skin test circuit 400, and open the thyristor PCR606 through the KG3 port, the first loop detection circuit 500 is connected to the first contact point TB1, and the controller 100 activates the first loop detection circuit 500 through the DR-PWM port to supply power to the first contact point TB1, so that an electrical signal can be formed between the first contact point TB1 and the third contact point P1, detects an electric signal between the first contact point TB1 and the third contact point P1, generates a third detection signal, the controller 100 receives the third detection signal through the CHECK S port, and controls the third load circuit according to the third detection signal.

The controller 100 receives a first detection signal through a port CKECK P2, a second detection signal through a port CHECK P1, and a third detection signal through a port CHECK S, and controls the EMS function of the EMS/RF control circuit 300 through an EMS-PWM port, controls the RF function of the EMS/RF control circuit 300 through an RF-PWM port, and controls the skin test circuit 400 through an HZ port. The third load circuit includes a variety of other functional circuits, as shown in fig. 4.

As shown in fig. 4, the multifunctional switching circuit includes an EMS/RF control circuit 300 and a skin test circuit 400, and the third load circuit further includes a massage circuit including a motor driving circuit 800 and a buzzer 900, a cooling and heating circuit including a peltier driving circuit 1000, and a photon whitening circuit including a photon driving circuit 1100. Above multiple functional module has constituteed a multiple functional massage appearance, and above-mentioned all functional module all make up through multi-functional switching circuit, and the switching and the combination of various functions of ingenious realization have simplified the structure of massage appearance, and a plurality of independent equipment integration are into a multiple functional equipment originally.

In order to explain the above-described multi-function switching circuit in more detail, the following will explain implementations of the EMS/RF control circuit 300, the skin test circuit 400, the photon driving circuit 1100, the peltier circuit, and the massage circuit, respectively.

As shown in fig. 5A, for the circuit diagram of the controller 100 provided in the embodiment of the present invention, the controller 100 may adopt a common programmable controller 100 PLC, a digital processing chip DSP, or a single chip microcomputer, in this embodiment, we exemplarily adopt an STM32F030R8T6 programmable control chip as the controller 100, and specific pins are as shown in fig. 5A, and include signal input pins, signal output pins, input and output pins, for example: DCDC EN base pin: the controller 100 is enabled as an enable terminal for each control unit; RF-PWM pin: as an RF control signal output terminal, connected to the EMS/RF control circuit 300; EMS-PWM pin: as an EMS control signal output terminal, connected to the EMS/RF control circuit 300; DR-PWM pin: for outputting a control signal to the first loop detection circuit 500; HZ base pin: for outputting a control signal to the skin test circuit 400; KG1 and KG2 pins: for outputting a control signal to the switching circuit 200; KG3 pin: the thyristor is used for controlling the on-off of the thyristor; CHECK P1 pin: for receiving a second detection signal; CHECK P2 pin: for receiving a first detection signal; CHECK S Pin: for receiving a third detection signal; a Motor pin: for outputting a control signal to the motor drive circuit 800; BUZZER pin: for outputting a control signal to the buzzer 900; PET +, PET-pins: the temperature control circuit is used for outputting a temperature control signal to the Peltier circuit; CHECK WEN pin: for detecting the current of the peltier; NTC1, NTC2 pin: for detecting temperature information; and so on. More specific and detailed descriptions of chip pins are not repeated herein, and a person of ordinary skill in the art can select an appropriate pin for control as needed, and hereinafter, when a specific pin is used, the name of the pin is directly referred to, and the pin can be directly understood as being connected to a pin of the controller 100, and the corresponding relationship between the pin and the controller 100 will not be described.

As shown in fig. 5B, for the voltage stabilizing circuit diagram provided by the embodiment of the present invention, the embodiment of the present invention adopts a wireless charging mode to provide power for the multifunctional switching circuit, and the wireless charging circuit adopts a DS _ JDS9002 design, and is an integrated wireless receiving, lithium battery protection chip, a three-in-one chip for charging management, a maximum charging current of 450mA, and has a dedicated communication protocol; the voltage stabilizing chip adopts an XC6206P33 chip design, outputs stable 3.3V and has the minimum leakage current of 7 uA.

In the multi-function switching circuit, the control of the EMS/RF control circuit 300 and the skin test circuit 400 is important, and both cannot be turned on simultaneously, and a detailed switching control circuit diagram thereof is shown in fig. 6, which will be described in detail below.

Fig. 6 is an EMS/RF control circuit diagram provided by the embodiment of the present invention, the EMS/RF control circuit diagram is composed of a transformer, an MOS transistor driving circuit, a voltage boosting circuit, etc., and the controller 100 outputs waveforms of different frequencies through the EMS-PWM pin to drive the MOS transistor to operate. When the controller 100 sends out a carrier wave of 1MHz through the EMS-PWM pin, the MOS tube is driven to work, the transformer outputs a high-voltage sine wave signal to generate a high-frequency signal, and the high-frequency signal acts on the skin to generate a warming effect, so that the regeneration of collagen at the bottom layer of the skin is promoted. When the controller 100 sends out 33Hz carrier waves through the EMS-PWM pin, the MOS tube is driven to work, the transformer outputs low-frequency alternating current signals, and when the low-frequency alternating current signals act on skin, electrical stimulation is generated, and the effect of skin tightness is achieved.

Specifically, as shown in fig. 6, the EMS/RF control circuit 300 includes an EMS/RF power circuit, a transformer L4, an N-MOS transistor Q15, and a transistor Q17. As shown in fig. 6, the EMS/RF power circuit includes a transistor Q5, a PMOS transistor U7, a boost module U6, and the like. The voltage stabilizing circuit provides voltage for the EMS/RF power circuit through a VBAT pin and is connected with a PMOS tube U7, a grid G of the PMOS tube U7 is connected with an enabling end DCDC-EN of the controller 100 through a triode Q5, the enabling end DCDC-EN is connected with a base electrode of a triode Q5 through a current limiting resistor R38, a grid G of the PMOS tube U7 is connected with a collector electrode of the triode Q5, and an emitter electrode of the triode Q5 is grounded; the controller 100 controls the conduction and the disconnection of a PMOS tube U7 through a control triode Q5, and the PMOS tube U7 is used for playing a protection role and protecting the boosting module U6 from being damaged. The drain D of the PMOS transistor U7 is connected to the boost module U6 through a current limiting resistor R47, the limiting current is 0.3/R47-0.3/0.2-1.5A, EC1, C29 is a filter capacitor, after passing through the boost module U6, the output voltage VOUT is 1.25(1+ R35/R44) -13.75V, and VOUT is connected to a tap 8 of a transformer L4 and is used for providing an input voltage to the transformer.

The primary coil of the transformer L4 includes

taps

6, 8 and 10, the output terminal VOUT of the boost module U6 is connected to the tap 8, and the tap 10 of the transformer L4 is grounded. A tap 6 of the transformer L4 is connected with an N-MOS tube Q15; the secondary coil of the transformer L4 includes

taps

3 and 6, the tap 3 being connected to a first contact point TB1, and the tap 6 being connected to a second contact point P2 for contacting a human body.

The controller 100 is connected with the gate of the N-MOS transistor Q15 through an EMS-PWM pin, and is configured to output carrier signals of different frequencies to the transformer L4 through the N-MOS transistor Q15. The drain of the N-MOS transistor Q15 is connected to the tap 6 of the transformer L4, and the source of the N-MOS transistor Q15 is grounded through a current limiting resistor R31. Wherein the N-MOS tube is an N-channel type MOS tube.

When the controller 100 transmits a low-frequency signal of 33HZ through the EMS-PWM pin, the transformer L4 outputs a low-frequency ac signal, and when the low-frequency ac signal is applied to the skin, an electrical stimulation is generated, so as to achieve the effect of tightening the skin. When the controller 100 sends out a carrier wave of 1MHz through the EMS-PWM pin, the MOS tube is driven to work, the transformer outputs a high-voltage sine wave signal to generate a high-frequency signal, and the high-frequency signal acts on the skin to generate a warming effect, so that the regeneration of collagen at the bottom layer of the skin is promoted.

Further, in order to further improve the effect that controller 100 transmits the carrier signal, the embodiment of the present invention further increases NPN type triode Q17 on EMS/RF control circuit 300, controller 100 through pin RF-PWM with triode Q17's base is connected, through transformer L4 take a percentage 10 with triode Q17's collecting electrode is connected, triode Q17's projecting pole ground. The controller 100 can alternately transmit an ac carrier signal to the transformer through two pins of EMS-PWM and RF-PWM, so that the transformer has higher operating efficiency. Simultaneously, furtherly, because the transformer produces reverse voltage in the course of the work, punctures the MOS pipe very easily, for further protection MOS pipe, the embodiment of the utility model provides a will transformer L4 take a percentage 10 department and set up diode D8, diode D8's negative pole meets transformer L4 takes a percentage 10, anodal ground connection. When the transformer generates negative voltage, the diode D8 is conducted to ground the tap 10 of the transformer, so that the N-MOS transistor Q15 is prevented from being broken down due to the generation of the negative voltage, and the N-MOS transistor Q15 is protected.

Further, in order to control the transmitting power of the EMS/RF control circuit 300 more accurately, the transmitting power can be dynamically adjusted according to the contact condition between the first contact point TB1 and the second contact point P2 and the skin, the embodiment of the present invention further provides a monitoring point S1 at the source of the N-MOS transistor Q15, which is used as the first detection signal output end, and is connected to the CHECK P2 pin of the controller 100. The controller 100 can detect the electric signal flowing through the second contact point P2 through the CHECK P2, thereby acquiring a first detection signal. When the controller 100 obtains the first detection signal as null, it indicates that the second contact point P2 is not in contact with the skin; when the first detection signal is too large, it indicates that the second contact point P2 is less in contact with the skin, and the transmission power needs to be increased; when the first detection signal is too small, it indicates that the second contact point P2 is in more contact with the skin, and the transmission power needs to be reduced. Of course, the above control process may also be set in the opposite manner, and is not limited specifically.

Therefore, it can be seen from the above that, the EMS/RF control circuit 300 provided by the embodiment of the present invention realizes the sharing of the EMS function and the RF function by the controller 100 transmitting different frequency signals, thereby simplifying the circuit; meanwhile, by setting the detection point S1, the controller 100 can acquire the contact degree of the second contact point P2 with the skin in real time, so that the transmission power can be accurately adjusted; furthermore, the diode is arranged at the tap 10 of the transformer, so that the N-MOS is protected from being broken down, and a good protection effect is achieved.

Fig. 7A shows the circuit diagram of the skin test circuit 400 provided by the embodiment of the present invention, the skin test circuit 400 is mainly used for measuring moisture of human skin, and can acquire the skin condition, and then adjust the EMS/RF function or other third party load functions according to the skin condition. The skin test circuit 400 includes a voltage follower circuit, a skin contact point, and an AD detection circuit.

The skin contact points are a first contact point TB1 and a second contact point P2; the skin test circuit 400 is connected to the second contact point P2 through contact point 4, to the first contact point TB1 through contact point 5, and to the skin through the first contact point TB1 and the second contact point P2. The contact point 4 is the input end of the AD detection circuit, and the contact point 5 is the output end of the voltage follower circuit.

The circuit structure of the voltage follower circuit is shown in fig. 7A, and the voltage follower circuit comprises a current limiting resistor R62 and a single operational amplifier U9A. The square wave signal is input into a single-operational amplifier U9A through a current limiting resistor R62, the output end of the single-operational amplifier U9A is connected with a first contact point TB1, and when the controller 100 outputs a carrier wave signal through an HZ pin, the signal with the same waveform is output to the skin through a voltage follower circuit at the first contact point TB 1.

The AD detection circuit comprises an isolation capacitor C24, a filter capacitor C26 and a diode D11, wherein a second contact point P2 is connected with one end of the isolation capacitor C24, the other end of the isolation capacitor C24 is connected with the anode of a diode D11, the cathode of the diode D11 is connected with the filter circuit formed by a resistor R63 and a resistor C26, and is connected with an FZ _ AD pin of the controller 100 to output a skin detection result to the controller 100.

The specific skin measuring process is that the controller 100 outputs 4KHZ square waves to the voltage follower circuit through the HZ pin, the voltage follower circuit generates a signal with the same waveform as an input signal at the first contact point TB1, the output signal is added on the contacted skin, a sharp waveform is formed at the second contact point due to the capacitive reactance characteristic of the skin, the waveform outputs a stable FZ _ AD signal after passing through the AD detection circuit, the simulation effect is shown in figure 7B, the simulation waveform displays, the 4KHZ square wave signals finally output direct current signals after passing through the detection circuit and the skin of a human body, and the output voltages obtained by different human body impedances are different.

In the actual skin measuring process, because the electrical impedance property of human tissue is more complicated than that of a general object, the most obvious characteristic is that the value of the electrical impedance changes along with the change of the measuring frequency. Since the fluid tissue in human cells is not simply characterized as electrical resistance, the effects of intracellular moisture and cell membranes are more of a capacitive nature. In order to analyze more skin characteristics and obtain multifrequency point information, the embodiment of the utility model discloses adopt square wave pulse signal as the excitation source, easily realize like this with digital circuit combination, and have the frequency spectrum of broad. As shown in fig. 7C, the correspondence between the voltage value and the moisture content is shown for the moisture curve corresponding to the collected AD value. As shown in fig. 7D, the water-oil contrast curve obtained by AD detection. The water-oil characteristics of the human skin can be measured by making a corresponding algorithm according to the curve, so that the skin characteristics of the human skin, such as oiliness, dryness, mixability and the like, are reflected, the functions of different gears are started according to different skin characteristics, and the effect of improving the skin is better achieved.

Therefore, from the above, the embodiment of the utility model provides a survey skin circuit 400, through setting up voltage follower circuit, AD detection circuitry, controller 100 arrives through transmission square wave signal voltage follower circuit adds to human skin, AD detection circuitry detects the signal that human skin produced, and the accurate situation that has reflected human skin makes controller 100 can be according to the testing result, right EMS RF control circuit 300 or other third party load circuit adjust, can be more accurate implement skin nursing.

Further, in practical applications, the EMS/RF function and the skin measurement function need to be separated and cannot be turned on simultaneously, and how to coordinate the use time between the EMS/RF function and the skin measurement function is a very important problem, and it is necessary to effectively prevent the damage to the skin caused by misoperation of the user. As shown in fig. 6 and 7A, the embodiment of the present invention provides a switching circuit 200 for coordinating the EMS/RF function and the skin measurement function. The switch circuit 200 is an electrically controlled double-pole double-throw switch, wherein the middle point 3 of one switch is connected with a first contact point TB1, and the middle point 6 of the other switch is connected with a second contact point P2; one throw of the switching circuit 200 includes contact 2 and contact 7; the other throw includes contact point 5 and contact point 4; controller 100 passes through KG1 and KG 2pin and is connected with switch controller 100YX-JDQ, and when KG1 equals 0, when KG2 equals 1, 2 feet and 3 feet of double-pole double-throw switch link to each other, and 7 feet and 6 feet link to each other, and first contact point TB1 and second contact point P2 contact human skin both sides switch on EMS RF control circuit 300, simultaneously, disconnect and survey skin circuit 400. When KG1 is equal to 1 and KG2 is equal to 0, pin 5 of the double-pole double-throw switch is connected to pin 3, pin 4 is connected to pin 6, the first contact point TB1 and the second contact point P2 contact both sides of the skin of the human body, the skin test circuit 400 is turned on, and simultaneously, the EMS/RF control circuit 300 is turned off, and the skin test function is turned on. Of course, the double-pole double-throw switch may be in the form of a relay, and may also be operated in the form of other electric switches, which are not limited herein.

From the above, the embodiment of the utility model provides a through setting up switch circuit 200, convenient realization to EMS RF control circuit 300 and survey the dispatch of skin circuit 400, prevented to cause simultaneously to open because user's maloperation to cause the injury to skin.

Further, on the basis of the EMS/RF control circuit 300, the embodiment of the present invention further provides another circuit structure, as shown in fig. 6 and fig. 8, in the embodiment shown in fig. 6, the controller 100 obtains the first detection signal by setting the first detection signal output end, so as to obtain the contact condition between the second contact point P2 and the skin, and further adjust the transmission power of the EMS/RF control circuit 300. In further research, the applicant finds that, because the controller 100 sends the carrier signal with the frequency of 33Hz when the EMS function is used, the power is relatively low, the electrical signal flowing through the second contact point P2 is often relatively weak, and the first detection signal output end often cannot effectively acquire an accurate first detection signal. Based on this, the present application further adds a second loop detection circuit 600 on the basis of the above-mentioned embodiments, as shown in fig. 8.

In fig. 8, the second loop detection circuit 600 includes a PNP transistor Q18 and an NPN transistor Q19 to form a detection circuit, and detects an electrical signal flowing through the second contact point, and outputs a second detection signal, so as to improve the detection sensitivity of the second contact point P2. In fig. 8, the second contact point P2 is electrically connected to the emitter of the PNP transistor Q18, the collector of the PNP transistor Q18 outputs a second detection signal to the controller 100 through a resistor R50, the base of the PNP transistor Q18 is connected to the collector of the NPN transistor Q19, the base of the NPN transistor Q19 is connected to the enable terminal DCDC EN of the controller 100, and the emitter of the NPN transistor Q19 is grounded; the collector of the PNP transistor Q18 is connected to the CHECK P1 port of the controller 100 through a current limiting resistor R50 and a pull-up resistor R53. Simultaneously, in order to prevent that the electric current backward flow from puncturing PNP type triode Q18, the embodiment of the utility model provides a still be in PNP type triode Q18's collecting electrode sets up diode D9, second pipe D9 negative pole connects PNP type triode Q18's collecting electrode, anodal ground connection. Through the second loop detection circuit 600, when the controller 100 sends out an enable signal through the DCDC EN port, the NPN transistor Q19 is turned on. When no electric signal passes through the second contact point P2, the PNP transistor Q18 is in an off state; when a current passes through the second contact point P2, even a weak signal, as long as the trigger condition of the emitter of the PNP transistor Q18 is satisfied, the PNP transistor Q18 will conduct, and the second detection signal output terminal will output the second detection signal to the CHECK P1 port of the controller 100.

With the second loop detection circuit 600, when the EMS/RF control circuit 300 is in the EMS mode, since the current flowing through the second contact point P2 is weaker, a current signal is generated at the second contact point P2, the current flowing through the second contact point P2 is subjected to sensitivity adjustment by the second detection signal, so that the detection sensitivity is improved, and the second detection signal is output, so that the controller 100 can more accurately know the contact conditions between the first contact point TB1 and the second contact point P2 and the skin.

As can be seen from the above, the second loop detection circuit 600 is provided to solve the problem of inaccurate detection caused by too small current under the EMS function, so that the controller 100 can more accurately grasp the contact conditions between the first contact point TB1 and the second contact point P2 and the skin, and can more accurately control the EMS/RF control circuit 300 and other third load circuits.

Further, when the EMS/RF control circuit 300 is turned off, the controller 100 needs to activate a third party load function, such as: the photon detection function also needs to detect whether the first contact point TB1 or the second contact point P2 contacts with the skin of a person, and if not, other third-party load functions are started when the contact with the skin is not performed, so that the injury to the human body is possibly caused, and therefore, the embodiment of the utility model provides a circuit structure diagram of a skin contact judgment circuit, as shown in fig. 9, showing a first loop detection circuit 500 and a third loop detection circuit diagram for detecting whether the contact point contacts with the skin.

As shown in fig. 9, the skin contact judging circuit includes a first loop detecting circuit 500 and a third loop detecting circuit 700. The first loop detection circuit 500 comprises a PNP type triode Q13, an NPN type triode Q16 and a controllable silicon PCR 606; the base electrode of the NPN type triode Q16 is connected with the DR-PWM pin of the controller 100 through a current limiting resistor R39 and is used for receiving a control signal of the controller 100, the emitting electrode of the NPN type triode Q16 is grounded, and the collector electrode of the NPN type triode Q16 is connected with the base electrode of the PNP type triode Q13 through a resistor R36; an emitting electrode of the PNP type triode Q13 is connected with 3.3V voltage, and a collector electrode of the PNP type triode Q13 is connected with one end of the controllable silicon PCR606 through a resistor R17; the other end of the thyristor PCR606 is connected with a first contact point TB1, one end of the thyristor PCR606 is connected with the collector of the PNP type triode Q13, and the control electrode of the thyristor PCR is electrically connected with the KG3 port of the controller 100. When the controller 100 sends a high level signal through the DR-PWM port, and at the same time, controls the thyristor PCR606 to be turned on through the KG3 port, the PNP transistor Q13 and the NPN transistor Q16 in the first loop detection circuit 500 are turned on to provide a voltage signal to the first contact point TB 1.

The third loop detection circuit 700 includes a third contact P1, a pull-up resistor R60, and a capacitor C7, and the CHECK S port of the controller 100 is directly connected to the third contact P1 for receiving a third detection signal.

When the controller 100 needs to start the photon function, the controller 100 outputs a control signal through the DR-PWM port, as shown in the above figure, the first contact point TB1 contacts the face of a person, the third contact point P1 is the electrode plate of the hand, the DR-PWM controls the on and off of the NPN transistor Q16, the Q13 is the PNP transistor, when the DR-PWM is at a high level, the Q16 transistor is turned on, the Q13 transistor is turned on, the R1 is the current-limiting resistor and the voltage-dividing resistor, the PCR606 is the one-way thyristor, the thyristor is turned on when the KG3 is at a high level, the voltage reaches the face, when the hand contacts the P1 electrode plate, the CHECK-S is about 1.65V, the system determines that the hand and the face simultaneously contact the skin, and at this time opens the corresponding load. Thereby starting the photon driving circuit 1100 to work and preventing the eyes from being directly damaged by the photons when the photons are started; or starting the vibration massage function to give people an intelligent feeling; peltier kinetic energy can also be initiated. The first loop detection circuit 500 and the third loop detection circuit 700 are used for starting other functions, so that the safety is higher and the function of preventing false triggering is realized.

In fig. 10, a photon driving circuit 1100 is provided, the photon driving circuit 1100 includes NPN transistors Q8, Q9, a red LED lamp LED-R and a yellow LED lamp LED-Y, and JP1 is a driving board. The driving board is connected with 3.3V voltage, the base electrode of the triode Q8 is connected with an LED-R through a resistor R19 and used for driving an LED lamp, the collector electrode of the triode Q8 is connected with the driving board JP1, and the emitter electrode of the triode Q8 is grounded through a resistor R23; the base electrode of the triode Q9 is connected with the LED-Y through a resistor R20 and used for driving the LED lamp, the collector electrode of the triode Q9 is connected with the driving board JP1, and the emitter electrode of the triode Q9 is grounded through a resistor R20. Therefore, the embodiment of the present invention combines the first loop detection circuit 500, the third loop detection circuit 700 and the photon driving circuit 1100, before the photon driving circuit 1100 is started, the first contact point TB1 and the third contact point P1 are judged by the first loop detection circuit 500 and the third loop detection circuit 700 to determine whether to contact with the skin of the human body, and only when the skin of the human body contacts, the photon driving circuit 1100 is started, so that the damage to the human body is avoided.

Further, the multi-function switching circuit further includes a peltier driving circuit 1000, as shown in fig. 10 and 11, fig. 11 is the peltier driving circuit 1000, and fig. 10 includes an NTC detection circuit. The Peltier driving circuit 1000 is used for heating or cooling human skin, is beneficial to pore enlargement and contraction of the skin, and can play a good role in tightening the skin.

As shown in fig. 11, the peltier circuit is a bridge driving circuit, and includes NPN transistors Q3 and Q4, P-MOS transistors Q1 and Q2, and N-MOS transistors Q10 and Q11, and the Q1, Q2, Q10, and Q11 form a bridge driving circuit. The controller 100 controls the peltier drive circuit 1000 through PET + and PET-ports. Wherein J12PIN is the refrigeration piece, the refrigeration piece is the thermocouple, and when the electric current passed through the thermocouple, one of them nodal point dispelled heat and another nodal point absorbed heat, consequently, can play the effect of heating and refrigeration.

PET + and PET-are applied to the both sides of refrigeration piece respectively, produce the effect of refrigeration and heating, reach the effect of accurate accuse temperature through the temperature sensor of PWM wave form control PET + and PET-and the peltier both ends. The base electrode of the NPN type triode Q3 is connected with the controller, and the collector electrode of the NPN type triode Q3 is connected with the grid electrode of the P channel type MOS tube Q2; the drain electrode of the P-channel MOS tube Q2 is connected with the refrigerating sheet; the drain electrode of the N-channel MOS tube Q10 is connected with the refrigerating sheet, and the grid electrode of the N-channel MOS tube Q10 is connected with the controller. The base electrode of the NPN type triode Q4 is connected with the controller, and the collector electrode of the NPN type triode Q4 is connected with the grid electrode of the P channel type MOS tube Q1; the drain electrode of the P-channel MOS tube Q1 is connected with the refrigerating sheet; the drain electrode of the N-channel MOS tube Q11 is connected with the refrigerating sheet, and the grid electrode of the N-channel MOS tube Q11 is connected with the controller. The source of the N-channel MOS transistor Q11 is connected to the source of the N-channel MOS transistor Q10, and is grounded via a current detection resistor R13.

When the controller 100 outputs a control signal to the NPN-type triode Q3 through an output end PET-through a resistor R7 and outputs a control signal to an N-MOS transistor Q10 through an output end PET-, the Q3, the Q2 and the Q10 are conducted, and the PET-acts on one side of the refrigeration piece, so that one side of the J12PIN is refrigerated, and a refrigeration effect is achieved. When the controller 100 outputs a control signal to the NPN-type triode Q4 through an output end PET + and a resistor R9, and outputs a control signal to the N-MOS transistor Q11 through the output end PET +, the Q4, the Q1, and the Q11 are turned on, and the PET + acts on the other side of the refrigeration piece, so that the J12PIN is heated, and a heating effect is achieved. Of course, the PET + can be applied to the refrigerating side, and the PET-can be applied to the heating side, so that the refrigerating sheet can generate the refrigerating or heating effect.

Further, for more accurate regulation to the temperature, the embodiment of the utility model provides a set up current detection resistance R13 between the source electrode of Q11 and Q10, set up the temperature detection point between R13 and source electrode and link to each other with the CHECK WEN pin of controller 100, the driven electric current of Peltier can be detected to controller 100 through the voltage that detects CHECKWEN, and when control temperature, the duty cycle of the PWM wave form of combination detection current through adjustment PET +/PET-can reach accurate temperature measurement.

Simultaneously for further right the peltier circuit protects, the embodiment of the utility model provides a still add NTC protect function, when the high temperature, stop heating. As shown in fig. 10, the embodiment of the present invention is provided with thermistors R17 and R18, which detect the temperature of the peltier circuit, and when the temperature is too high, the controller 100 adjusts the peltier circuit.

As shown in fig. 10, the thermistors R17 and R18 are typically provided with a peltier circuit for measuring the temperature of the peltier circuit. One end of the thermistor R17 is connected with the driving board JP1, the other end is grounded through a capacitor C6, and a temperature output point is arranged between the R17 and the C6 and is connected with an NTC1 pin of the controller 100. One end of the thermistor R18 is connected with the driving board JP1, the other end is grounded through a capacitor C5, and a temperature output point is arranged between the R18 and the C7 and is connected with an NTC 2pin of the controller 100. And the NTC1 and the NTC2 are respectively arranged on two sides of the refrigerating sheet and used for collecting the temperature of the refrigerating sheet.

Therefore, in summary, the peltier driving circuit 1000 according to the embodiment of the present invention is combined with the first loop detection circuit 500 and the third loop detection circuit 700, and only when the controller 100 detects that the first contact point TB1 and the third contact point P1 contact with the human body, the peltier driving circuit is activated to heat or cool the skin, so as to avoid useless work and save power. Meanwhile, the temperature detection points are arranged at the same time, so that the temperature of the Peltier driving circuit 1000 is accurately controlled. Furthermore, the problem of overheating of the Peltier circuit is avoided by arranging the NTC detection circuit.

Further, as shown in fig. 12A and 12B, the utility model discloses still provide the massage function, the massage module includes motor drive circuit 800 and buzzer circuit, motor drive circuit 800 and buzzer circuit with first return circuit detection circuitry 500 and third return circuit detection circuitry 700 mutually support, when controller 100 confirms first contact point TB1 and third contact point P1 contact the human body, then can start motor drive circuit 800 and buzzer circuit.

Specifically, the Motor driving circuit 800 includes an NPN transistor Q6 and a Motor DJ1 as shown in fig. 12A, wherein a base of the transistor Q6 is connected to a Motor pin of the controller 100 through a current limiting resistor R12, and a collector of the transistor Q6 is connected to the Motor DJ1 for driving the Motor to vibrate and stop. As shown in fig. 12B, the BUZZER 900 circuit includes an NPN-type triode Q7 and a BUZZER BUZ1, the base of the NPN-type triode Q7 is connected to the BUZZER pin of the controller 100 through a current-limiting resistor R14, the collector of the NPN-type triode Q7 is connected to the BUZZER BUZ1, and the controller 100 outputs a 4KHz waveform to drive the BUZZER 900 to operate.

Therefore, in summary, the embodiment of the present invention provides a motor driving circuit 800 and a buzzer circuit, which are combined with a first detection circuit and a third loop detection circuit 700, only when the controller 100 detects that the first contact point TB1 and the third contact point P1 contact with the human body, the driving circuit and the buzzer 900 are started to massage the skin, so as to avoid useless work and save power.

Further, the embodiment of the utility model provides a still provide a massage appearance, the massage appearance adopts the one or more multi-functional switching circuit that mention in the above-mentioned embodiment, and specific multi-functional switching circuit is unanimous with above-mentioned description, no longer gives details here.

It should be noted that unless otherwise indicated, technical or scientific terms used in accordance with embodiments of the present invention shall have the ordinary meaning as understood by those skilled in the art to which embodiments of the present invention pertain.

In the description of the embodiments of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated on the drawings, which is only for convenience of describing the embodiments of the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the embodiments of the present invention.

Furthermore, the technical terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the novel embodiments of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In describing the novel embodiments of this embodiment, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A multi-function switching circuit, comprising: the device comprises a controller, a switch circuit, an EMS/RF control circuit, a skin test circuit, a first contact point and a second contact point;

2. The multi-function switching circuit of claim 1, wherein said switching circuit comprises a double throw switch having one end of one way connected to said first contact; and one end of the other path of the double-path double-throw switch is electrically connected with the second contact point.

3. The multi-function switching circuit of claim 1, further comprising a second loop detection circuit;

the second loop detection circuit comprises a PNP type triode Q18 and an NPN type triode Q19;

an emitting electrode of the PNP transistor Q18 is connected to the second contact point, a base electrode of the PNP transistor Q18 is electrically connected to a collector electrode of the NPN transistor Q19, and a collector electrode of the PNP transistor Q18 is connected to the controller, and is configured to output a second detection signal to the controller;

the base electrode of the NPN type triode Q19 is electrically connected with the enabling end of the controller;

the controller sends an enabling signal to the NPN type triode Q19, and when an electric signal passes through the second contact point, the PNP type triode Q18 is triggered to send a second detection signal to the controller.

4. The multi-function switching circuit of claim 1, wherein the EMS/RF control circuit includes an N-channel type MOS transistor Q15;

the base electrode of the N-channel MOS tube Q15 is electrically connected with the controller;

a source electrode of the N-channel MOS transistor Q15 is provided with a first detection signal output end, which is used for detecting an electrical signal flowing through the second contact point and outputting a first detection signal to the controller;

the controller controls the signal power transmitted to the base of the N-channel MOS tube Q15 according to the first detection signal.

5. The multi-function switching circuit of claim 4, wherein the EMS/RF control circuit comprises a transformer L4;

a tap 6 of a primary coil of the transformer L4 is connected with a drain electrode of the N-channel MOS tube Q15; the tap 10 of the primary coil of the transformer L4 is connected to the cathode of the diode D8.

6. The multifunctional switching circuit of claim 5 wherein said EMS/RF control circuit comprises an NPN transistor Q17;

the collector of the NPN type triode Q17 is connected with the tap 10 of the transformer L4, and the base of the NPN type triode Q17 is electrically connected with the controller;

the controller is used for respectively sending control signals to the base electrode of the N-channel type MOS tube Q15 and the base electrode of the NPN type triode Q17.

7. The multifunctional switching circuit according to claim 1, wherein the EMS/RF control circuit comprises an NPN transistor Q5, a PMOS transistor U7, and a boost module U6;

the base electrode of the NPN type triode Q5 is electrically connected with the enabling end of the controller, the collector electrode of the NPN type triode Q5 is electrically connected with the grid electrode of the PMOS tube U7, and the NPN type triode Q5 is used for controlling the on-off of the PMOS tube U7;

the drain electrode of the PMOS tube U7 is electrically connected with the boosting module U6.

8. The multi-function switching circuit of claim 1, wherein the skin test circuit comprises:

a voltage follower circuit and an AD detection circuit;

one end of the voltage following circuit is electrically connected with the controller, and the other end of the voltage following circuit is electrically connected with the switch circuit and is electrically connected with the first contact point through the switch circuit;

and one end of the AD detection circuit is electrically connected with the controller, and the other end of the AD detection circuit is electrically connected with the switch circuit and is electrically connected with the second contact point through the switch circuit.

9. The multi-functional switching circuit of claim 8, wherein said voltage follower circuit comprises a current limiting resistor R62 and a single op amp U9A;

one end of the current-limiting resistor is electrically connected with the controller, and the other end of the current-limiting resistor is connected with the single operational amplifier U9A and used for following the waveform of the signal input by the controller.

10. A massage apparatus, characterized in that it comprises a multifunctional switching circuit according to any one of claims 1 to 9.