66 results about "Skin impedance" patented technology

The invention relates to the technical field of electric acupuncture apparatuses, and discloses a method and a system for automatically adjusting stimulation parameters of an electric acupuncture apparatus. According to the method, body surface electromyographic signals, skin impedance and capillary hemodynamic parameters of a user are collected in real time through a sensor set, feature extraction and analysis are conducted through a time sequence prediction model of a Transform architecture, and physiological feature data are generated. And then, constructing a user physiological state characterization model by adopting a multi-modal neural perception fusion algorithm, and carrying out collaborative optimization on the electrical stimulation parameters through an adaptive quantum particle swarm optimization algorithm to generate a stimulation parameter combination matched with the real-time neuromuscular response characteristics of the user. The system drives electrical stimulation output according to the parameter combination, monitors physiological data changes in real time, realizes closed-loop dynamic balance of stimulation parameters and biological feedback signals through the dynamic parameter compensation module, and improves the treatment effect and safety.

The invention discloses an adjustable blood transfusion reaction monitoring system. The system comprises a multi-mode physiological signal acquisition module, a data processing and analysis module, a user interaction and parameter configuration interface, a wireless communication module, an alarm and feedback module and a power management module. By integrating an electrocardiogram (ECG) sensor, an oxyhemoglobin saturation (SpO2) detection probe, a non-invasive blood pressure measuring device, a body temperature sensor, a respiratory rate monitor and a skin impedance change sensor, real-time acquisition of various physical parameters is realized; a rule-based threshold judgment model and a time sequence prediction model are built in the data processing and analysis module, and the data processing and analysis module is used for identifying potential blood transfusion reaction risks; and the user interaction and parameter configuration interface provides a touch display screen and remote terminal equipment to realize information input, data display and operation recording. Continuous dynamic monitoring, intelligent early warning and graded response in the blood transfusion process are achieved, blood transfusion safety and nursing efficiency are improved, and the system has wide clinical application prospects.

The invention provides a neutral electrode heat effect test method and system, and relates to the field of neutral electrode detection. The invention relates to a neutral electrode heat effect test method, which comprises the following steps of: attaching a neutral electrode to a contact unit of one or more of a plurality of test modules; the contact units are conducted with the corresponding direct connection units; determining at least part of the plurality of test modules as initial effective test modules; acquiring an attachment safety threshold value of the neutral electrode, and selecting at least part of the initial effective test modules as final effective test modules according to the attachment safety threshold value; the contact unit of the final effective test module is conducted with the corresponding human body skin impedance unit; and after the first current is continuously applied to the neutral electrode within the first time period, temperature rise temperature data of each final effective test module is obtained, and the heat effect data comprises the temperature rise temperature data.

The invention discloses a sleep-aiding linkage system based on ankle recovery monitoring, and relates to the technical field of medical health and intelligent monitoring. According to the sleep-aiding linkage system based on ankle recovery monitoring, rich biomechanical parameters of an ankle area are collected in real time through a multi-mode sensor; the method comprises the steps that plantar pressure distribution, ankle joint motion trails, foot temperature and skin impedance are covered, the data are subjected to multi-dimensional fusion analysis, calculation is conducted in combination with a built-in neural network model, the ankle fatigue state and the recovery stage can be accurately analyzed, the method is different from a traditional fixed threshold value judgment mode, and the system can be dynamically adjusted according to individual differences of users and historical data; and furthermore, the sleep-aiding equipment linkage control module is used for finely adjusting operation parameters of mattress hardness, environment illumination intensity and sound wave frequency for sleep monitoring equipment and environment temperature control equipment according to an analysis result, so that an exclusive sleep environment matched with an ankle recovery process is created for a user.

The invention relates to a multichannel neuromuscular electrical stimulation device and a control method thereof. The device comprises a multi-stage power supply generator which is provided with a booster circuit for generating N-stage voltage; a plurality of electrical stimulation channels; the digital control circuit comprises a controller and a plurality of channel control registers respectively corresponding to the plurality of electrical stimulation channels; the skin impedance detection circuit is configured to detect the skin impedance value of the stimulation part corresponding to the output electrode of each electrical stimulation channel; the multi-stage power generator further comprises a voltage selection unit for switchably connecting each electrical stimulation channel to the N voltage outputs, and the voltage selection unit is configured to select and / or switch a supply voltage for each electrical stimulation channel from the N voltage outputs according to a skin impedance value detected by the skin impedance detection circuit. According to the multi-channel neuromuscular electrical stimulation device and the control method thereof, flexible cooperative control among multiple channels and self-adaptive adjustment based on impedance are realized, and the system energy efficiency and the treatment accuracy are improved.

The invention relates to the field of intelligent medical treatment, in particular to a percutaneous lung channel acupoint electrical stimulation optimization system based on artificial intelligence, which comprises a multi-source data acquisition module (M1), a dynamic modeling module (M2) and a self-adaptive electrical stimulation module (M3). M1, collecting lung channel acupoint skin impedance, infrared thermal imaging, respiratory rhythm and cough frequency data in real time, and generating multi-source fusion features through space-time alignment; m2, based on a deep learning model, combining with a preset database to dynamically generate an electrical stimulation parameter combination, and ensuring parameter safety through impedance calibration and constraint optimization; and M3, adjusting the stimulation intensity according to the parameters, and setting an impedance threshold to trigger power-off protection. The traditional Chinese medicine meridian theory and the AI algorithm are fused, accurate acupoint positioning, personalized electrical stimulation and dynamic safety regulation are achieved, and the respiratory system disease treatment effect is improved.

The invention relates to the technical field of physiotherapy, in particular to a multi-mode physiotherapy system integrating ion release and electromagnetic stimulation. The system comprises a biological feedback sensing module, an intelligent control module, a space-time cooperative control module, a multi-channel ion release module, a multi-band electromagnetic generation module and a self-adaptive optimization module. Firstly, skin impedance, blood flow and temperature parameters are collected by the system, and a collaborative strategy is generated through multi-parameter analysis of an intelligent control module; the time-space cooperative control module synchronously adjusts the ion release and electromagnetic field excitation time sequence; the multi-channel ion release module realizes quantitative release of multiple types of ions by utilizing microfluidics; the multi-band electromagnetic generation module outputs low-frequency, medium-frequency and high-frequency programmable electromagnetic fields; the adaptive optimization module dynamically corrects treatment parameters based on the electrophysiological feedback. According to the system, multi-modal fusion of iontophoresis and electromagnetic stimulation is realized, and the accuracy and individualization level of treatment are improved.

The invention discloses an electrical stimulation control method and device based on impedance feedback and a medium, and relates to the technical field of electrical stimulation. According to the scheme, a target electrical stimulation output mode set by a user is collected through a man-machine interaction module, and an initial impedance value of a detected target is detected through an impedance and voltage detection module; the main control module generates an initial output parameter according to the target electrical stimulation output mode and the initial impedance value, and the electrical stimulation module executes electrical stimulation output; the dynamic impedance value of the measured target is continuously monitored in the output process, and when the impedance of the measured target changes, the initial output parameter is adjusted so as to correct the electrical stimulation output. That is, according to the scheme, the impedance change of the measured target is continuously monitored in the electrical stimulation output process, and when the difference between the dynamic impedance value and the initial impedance value is found, the initial output parameter is adjusted to correct the electrical stimulation output so as to adapt to the dynamic change of the human skin impedance and maintain the stability of the current; and the safety and the reliability of electrical stimulation output are ensured.

The skin treatment device of the present invention comprises: a radio frequency (RF) generator for generating RF energy; an electrode for transmitting the RF energy to a skin tissue of a user; a measurement unit for measuring a forward RF voltage caused by the RF energy and a reverse RF voltage caused by the RF energy reflected to the RF generator; and a controller for calculating a skin impedance and an RF energy efficiency of the user based on the measured forward RF voltage and the reverse RF voltage, and controlling an output of the RF generator based on the calculated skin impedance and the RF energy efficiency.

The invention discloses a skin impedance self-adaptive intermediate frequency physiotherapy instrument control system and a skin impedance self-adaptive intermediate frequency physiotherapy instrument control method.The control system comprises an electrode output unit, a main control unit, a current and voltage real-time sampling unit and an impedance value calculation unit, and the current and voltage real-time sampling unit is used for sampling real-time current and voltage when the electrode output unit works; the collected real-time current and voltage are sent to an impedance value calculation unit; the impedance value calculation unit is used for receiving the current and the voltage sent by the electrode output unit and calculating an impedance value generated by the skin of the user to the current pulse signal according to the current and the voltage values; the main control unit is used for receiving the impedance values calculated by the impedance value calculation unit, taking the impedance value received for the first time as a standard value, taking each impedance value received after the first time as a current real-time impedance value, comparing the standard value with the current real-time impedance value, and finally, according to a comparison result, determining the impedance value of the current real-time impedance value. And an instruction for increasing, maintaining or reducing the voltage output related parameters is sent to the electrode output unit.

The application discloses a starfish-imitated tube foot array hydrogel electrode and a preparation method thereof. The bottom of the conductive hydrogel electrode is provided with a starfish-imitated tube foot array. A single starfish-imitated tube foot comprises a stem and a terminal biomimetic sucker. The outer side of the sucker is a circular table structure, and the inner side is a cavity composed of a hemisphere. The integrated tube foot microstructure of the electrode is obtained by laser cutting of the hydrogel. First, the inner cavity structure is cut. Then, the outer side of the biomimetic tube foot shape is cut. Finally, the single biomimetic tube foot is inserted into the block-shaped hydrogel to form an array. The preparation method of the conductive hydrogel electrode comprises the following steps: first, a prepolymer is synthesized; then, the prepolymer, cationic monomers and anionic monomers are polymerized to obtain a hydrogel with anti-swelling and stable and excellent conductive performance. The conductive hydrogel electrode has the self-adhesion and anti-swelling ability when working underwater, can be closely combined with human skin, reduces the electrode-skin impedance, and improves the quality of underwater electromyographic signal collection.

This invention discloses a control method and control system for pulses in a physiotherapy device. The method includes: acquiring detection data collected by the patch during its operation; wherein the detection data includes: electromyography (EMG) data, skin impedance, skin temperature, and pressure distribution; identifying the patch's fit degree based on the skin impedance and pressure distribution; after the fit degree meets the standard, determining the current operating state category of the physiotherapy device based on the EMG data and skin temperature; obtaining electrode current compensation and heating power compensation for the patch based on the operating state category; and controlling the patch to adjust the current pulse and temperature based on the electrode current compensation and heating power compensation. This invention solves the technical problem in the prior art where physiotherapy devices cannot adaptively adjust different pulse controls for output, and can automatically adjust the current pulse and temperature parameters to suit the user when using the physiotherapy device, improving the user experience and ease of use.

The invention relates to a control method and device of electrical stimulation equipment, computer equipment, a computer readable storage medium and a computer program product. The method comprises the steps of determining a target electrical stimulation mode in response to selection of an object on an electrical stimulation mode on target electrical stimulation equipment, and determining a correction relation corresponding to the target electrical stimulation mode; the target electrical stimulation equipment comprises electrodes arranged in pairs; performing electrical stimulation output based on the target electrical stimulation mode, and obtaining real-time skin impedance between the electrodes and a skin impedance change rate; when the skin impedance change rate exceeds a preset change rate, determining an expected current and an expected period according to the real-time skin impedance and a correction relation; and outputting current matched with the expected current according to the expected period, so that the electrode outputs corresponding electrical stimulation. By adopting the method, the use comfort of the electrical stimulation equipment can be improved.

The invention relates to the technical field of microneedle transdermal drug delivery, in particular to a puncture depth self-adaptive microneedle system. The microneedle system comprises a microneedle array used for puncturing skin, providing a sampling point for detecting skin impedance at a skin layer touched by a needle tip of the microneedle array, and releasing drugs; the detection unit is connected with the microneedle array and is configured to acquire skin impedance at the sampling point in a short pulse mode and output a control signal when it is judged that the needle tip of the microneedle array penetrates through the cuticle according to the skin impedance; the execution unit is respectively connected with the microneedle array and the detection unit and is configured to receive a control signal from the detection unit to stop the microneedle array from continuously puncturing into the skin after the detection unit judges the penetration, so that the penetration depth of the microneedle can be actively limited based on the electrical characteristic change of the skin in the penetration process of the microneedle; the problem of skin individual difference is effectively solved, and the active recognition capability and the automatic adjustment capability of the real-time penetration state are achieved.

A beauty device using skin impedance measurement and ultrasonic cross-frequency according to an embodiment of the present invention comprises: an electrical stimulator including an electrode, which transmits a current to the skin of a subject in order to measure the skin impedance of the subject and care for the skin condition of the subject analyzed on the basis of the skin impedance of the subject, and an LED, which irradiates the skin of the subject with light while the current is being transmitted to the skin of the subject; and a cross-frequency ultrasonic stimulator that measures the skin impedance of the subject and is provided with an ultrasonic generator that irradiates the skin of the subject with ultrasonic waves of cross-frequency in order to care for the skin condition of the subject analyzed on the basis of the skin impedance of the subject, wherein the beauty device can apply electrical stimulation, optical stimulation, and ultrasonic stimulation to the skin of the subject.

The invention relates to a neutral electrode heat effect test system, a temperature rise characteristic test method and a cooling characteristic test method. The neutral electrode heat effect test system comprises an upper computer for generating a test configuration instruction; the central control module is connected with the upper computer and interacts data; each electronic skin module comprises a skin contact surface, a human body skin impedance network capable of simulating skin impedance of different crowds, a temperature measurement feedback device for collecting temperature and a heating device; the high-frequency variable-frequency constant-current source module outputs high-frequency constant current to enable the neutral electrode and the impedance network to generate heat; the central control module receives the temperature parameters and / or the constant current output parameters and uploads the temperature parameters and / or the constant current output parameters to the upper computer. According to the invention, the heat effect test of the neutral electrode can be effectively realized.

The invention provides an electrical stimulation signal adaptive adjustment method and circuit, and belongs to the technical field of virtual reality interaction. In the first high-frequency range, high-frequency frequency corresponding to the lowest skin impedance in electrode array skin impedance detection is obtained in real time, and the high-frequency frequency is determined as high-frequency reference frequency. An initial low frequency and two first electrodes corresponding to a tactile feedback event are obtained. A first stimulation frequency is determined according to the initial low-frequency frequency and the high-frequency reference frequency, and a second stimulation frequency is determined according to the initial low-frequency frequency and the high-frequency reference frequency. And generating a first stimulation signal according to the first stimulation frequency, and generating a second stimulation signal according to the second stimulation frequency. According to the first stimulation signal and the second stimulation signal, at least two first electrodes in the electrode array are controlled to be conducted, high-frequency double-frequency electric field superposition interference is achieved in the skin deep tissue, and the problem that touch intensities of the same operation are inconsistent in a traditional method is solved.

The present application provides a radio frequency system for automatically regulating output energy by measuring skin impedance. According to the method, a forward voltage and a reverse voltage of radio frequency energy acting on the skin are measured; a control module adjusts the duty cycle of a second PWM control module on the basis of the forward voltage and the reverse voltage; the second PWM control module regulates an output voltage of a main power supply on the basis of the adjusted duty cycle, so as to regulate radio frequency energy outputted by the radio frequency system; and thus, the radio frequency energy acting on the skin can be automatically regulated without manual regulation, thereby greatly improving the radio frequency energy output accuracy of the radio frequency system.

The invention relates to the technical field of medical equipment, in particular to an ear mold 3D printing and electrical stimulation integrated treatment system for migraine, and the system comprises an auricle data collection module which collects the three-dimensional geometric data, auricular point positioning data and skin impedance distribution data of the auricle of a patient; the personalized ear mold generation module constructs a personalized ear mold with a built-in bionic radian electrode channel through a self-adaptive layered 3D printing algorithm, and alignment of the electrode channel and a target auricular point is carried out; the intelligent electrical stimulation regulation and control module is combined with an improved targeted Attention-LSTM model to dynamically adjust the electrical stimulation frequency, the pulse width and the stimulation intensity so as to generate a personalized electrical stimulation scheme; and the execution and safety monitoring module converts the personalized electrical stimulation scheme into a targeted electrical stimulation physical treatment process, and performs dynamic monitoring and adaptive adjustment in the whole treatment process. Therefore, the problems of single auricle data acquisition dimension, obvious personalized ear mold printing and adaptability defects and the like in the prior art are solved.

The application discloses a physical treatment equipment for island high-humidity environment and chronic pain, which comprises a host provided with a protective shell, a composite treatment electrode connected with the host, and a control system built in the host. The composite treatment electrode is provided with an electrically conductive part, a heating part, an impedance monitoring unit and a micro-environment humidity sensor. The control system comprises a cause identification module, a generation module and a treatment output module. The cause identification module is used for collecting and processing the skin impedance data of the impedance monitoring unit and the humidity data of the micro-environment humidity sensor, and identifying the identification cause causing the impedance change as biological sweating or environmental salt mist penetration. The generation module generates a corresponding first adjustment strategy or a second adjustment strategy according to the identification cause. The treatment output module is used for driving the electrically conductive part and the heating part of the composite treatment electrode to execute corresponding electric stimulation and heat therapy output based on the first adjustment strategy or the second adjustment strategy. The application not only has the protective shell for preventing corrosion, but also can adaptively adjust and match the treatment parameters in the island environment.

The invention discloses a health ability construction system and method based on an intelligent ring, and the method comprises the steps: collecting multi-modal data through a D1-series sensor, carrying out the processing of an E1-series analysis engine, and generating a five-dimensional health ability score (C1-2) through an M1-series model; after the system locates the dimension of the short plate, a stepped intervention suggestion (I1-3) is generated based on D1-4 (illumination), D1-3 (skin impedance) and other data, and a layer iteration model is optimized through an L1 series closed loop. Compared with the prior art, the health management pertinence is improved, the exercise recovery ability is averagely improved by 18 points within 3 months, and the method is suitable for personalized health monitoring.

This invention relates to a skin impedance detection device and method, comprising a detection probe, a mechanical drive unit, a force-sensing closed-loop feedback module, a near-ultraviolet array excitation module, a multi-frequency impedance acquisition module, and a data processing unit. This application can induce physiological stress in the skin through 365nm near-ultraviolet pre-irradiation, utilize a stepper motor in conjunction with a force sensor to achieve a constant 1.5N downward pressure on the electrodes, and employs a four-electrode independent drive and a group-by-group contact mode to eliminate electric field coupling interference. Impedance data is acquired through multi-frequency constant current excitation, and based on a nonlinear closed-loop algorithm using logarithmic, exponential, and square operations, the data is converted into the Skin Barrier Index (SBI) and the Inflammatory Skin Index (ILI), significantly improving detection repeatability and clinical discriminability.

The present application relates to a kind of neutral electrode thermal effect test system, temperature rise characteristic test method and cooling characteristic test method.The neutral electrode thermal effect test system includes: host computer, generates test configuration instruction;Central control module, connect host computer and interact data;Multiple electronic skin modules, contain skin contact surface, the human body skin impedance network for simulating the skin impedance of different population, temperature measuring feedback device for temperature acquisition and heating device;High-frequency variable-frequency constant-current source module, output high-frequency constant current makes neutral electrode and impedance network heat production;Central control module receives temperature parameter and / or constant-current output parameter and uploads host computer.The present application can effectively realize the thermal effect test of neutral electrode.

The utility model discloses an electrical stimulation circuit capable of detecting skin impedance, which relates to the field of medical instruments and comprises a control module, a first switch, an electrode and an impedance detection component. Two first switches are connected in series to form a bridge arm, a plurality of bridge arms are connected in parallel to form a switching circuit, one end of the switching circuit is connected with a power supply, and the other end is grounded. And each bridge arm is connected with an electrode. The control module is provided with a first output interface, a second output interface and a first input interface which control the first switches to be turned on and turned off, and each first switch corresponds to one first output interface. The impedance detection assembly comprises a first resistor and a diode, the second output interface is connected with the anode of the diode through the first resistor, and the cathode of the diode is connected between the two first switches of one bridge arm. The first input interface is connected between the first resistor and the diode. Three functions of skin depolarization, skin impedance measurement and electrical stimulation can be realized by adjusting the on-off states of different first switches through the control module.

The invention relates to a skin impedance detection circuit and radio frequency treatment equipment, and the circuit comprises a detection electrode module which is used for making contact with human skin to form a current detection loop; the differential current acquisition circuit is connected in series in the current detection loop and is configured to convert the excitation current flowing through the detection electrode module into a differential voltage signal; the amplifying circuit capable of digitally controlling gain is connected to the output end of the differential current acquisition circuit and is configured to receive the differential voltage signal, switch gain gears according to a digital control signal and output an amplified analog signal; and the main control module is connected to the amplifying circuit capable of digitally controlling the gain, and is configured to collect the amplified analog signal, calculate a skin impedance value by combining the current gain gear and the known excitation parameter, and generate an equipment control instruction according to the skin impedance value. The skin impedance detection circuit can detect impedance in real time and set a safety threshold value, and when the impedance exceeds a normal range, the equipment can immediately pause output or reduce power.

Systems and methods of monitoring electrodermal activity (EDA) in human subjects suitable for use in wearable electronic devices. An EDA monitoring system can include first and second dry electrodes, an alternating current (AC) excitation signal source, a trans-impedance amplifier, an analog-to-digital (A-to-D) converter, a discrete Fourier transform (DFT) processor, and a microprocessor. The AC excitation signal source can produce an AC excitation signal having a predetermined excitation frequency, such as about 100 or 120 Hertz (Hz). The analog-to-digital (A-to-D) converter can include a sample-and-hold circuit that operates at a predetermined sampling frequency, such as about four times (4×) the predetermined excitation frequency of 100 or 120 Hz. The DFT processor can generate complex frequency domain representations of digitized, sampled voltage level sequences provided by the A-to-D converter for use in obtaining measures of a user's skin impedance or skin conductance.

The embodiment of the invention provides a beauty instrument and a control method of the beauty instrument, the beauty instrument comprises an impedance acquisition circuit, a current control circuit and a main control chip, and the main control chip is connected with the impedance acquisition circuit and the current control circuit; the impedance acquisition circuit is used for acquiring the impedance value of the skin of the user, so that the output current of the beauty instrument can be adjusted in a targeted manner according to the skin impedance values of different users, and the applicability of the beauty instrument is improved; the current control circuit is used for adjusting the output current of the beauty instrument, the current is accurately controlled, it is guaranteed that a user feels comfortable, meanwhile, excessive stimulation to the user is avoided, and the comfort and safety of the beauty instrument are improved; and the main control chip is used for controlling the current control circuit according to the impedance value of the skin of the user acquired by the impedance acquisition circuit so as to adjust the output current of the beauty instrument, so that the beauty instrument can intelligently output the current which makes the user feel comfortable according to different skin of the user, and the use experience of the user is improved.

The invention belongs to the technical field of intelligent locks, and particularly relates to a safe intelligent lock unlocking system and method based on the Internet of Things. Fingerprint texture images, a pressure distribution sequence, skin impedance frequency response characteristics and an interface temperature rise curve are synchronously collected in the contact process; and multi-modal fusion judgment is performed in combination with electrical stimulation response analysis and pressure topological evolution behaviors, so that the authenticity of physiological activity and operation habits is effectively identified. According to the method, the biological characteristics of a legal user can be accurately identified, and the defect that the prosthesis lacks real tissue electrochemical response and dynamic pressure behavior can be detected, so that the attack of a false fingerprint mold is fundamentally prevented. The identification capability of the intelligent lock on the identity of a living body is remarkably improved, the attack of a high-simulation prosthesis is effectively resisted, and the overall security of the system is greatly enhanced while the convenient use of a legal user is ensured.

The invention belongs to the technical field of nerve targeted therapy, and discloses a nerve targeted spinule drug penetration integrated therapy method for cervical and lumbar spondylosis, which comprises the following steps: determining a lesion segment through image or electrophysiology positioning, applying a soluble spinule patch with layered design in a target area, and rapidly releasing a surface drug to relieve pain. The inner-layer drug carrier is gradually released to play anti-inflammatory and nerve repairing roles; the surface of the carrier can modify a nerve targeting ligand to improve local concentration. The method can also be combined with a low-frequency or high-frequency electrical stimulation module to enhance drug permeation and neurological function recovery, and matched with a sensor to monitor skin impedance or temperature in real time so as to ensure safety. The invention has the advantages of rapid analgesia, long-acting maintenance and high targeting, avoids the defects of oral administration and injection treatment, and has clinical application values of minimally invasive, individualized and suitable for long-term management.

The invention provides an impedance detection control method and high-frequency skin treatment equipment, the high-frequency skin treatment equipment comprises a high-frequency power supply, a controller connected with the high-frequency power supply and at least one electrode electrically connected with the high-frequency power supply, and the high-frequency power supply is used for applying periodic high-frequency voltage pulses to the electrodes; the impedance detection control method comprises the following steps: acquiring a plurality of output voltage values at a preset acquisition frequency in an output time domain of a high-frequency voltage pulse; performing filtering processing on the plurality of output voltage values to obtain an output voltage filtering value; if the output voltage filtering value is larger than the preset voltage threshold value, the controller detects the impedance of the skin based on the current output voltage value. According to the invention, the sampling action is strictly limited in the output time domain of the high-frequency voltage pulse so as to avoid crosstalk signals in a non-output time period and improve the accuracy of voltage sampling; secondly, filtering processing is carried out on the collected multiple voltage values to suppress instantaneous noise, and finally skin impedance detection is executed when output is stable and effective, so that the accuracy of impedance detection is improved.