CN112169169A - Beauty instrument current control system and beauty instrument - Google Patents
Beauty instrument current control system and beauty instrument Download PDFInfo
- Publication number
- CN112169169A CN112169169A CN202011040053.8A CN202011040053A CN112169169A CN 112169169 A CN112169169 A CN 112169169A CN 202011040053 A CN202011040053 A CN 202011040053A CN 112169169 A CN112169169 A CN 112169169A
- Authority
- CN
- China
- Prior art keywords
- resistor
- pwm signal
- electrically connected
- frequency
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003796 beauty Effects 0.000 title claims abstract description 36
- 239000002537 cosmetic Substances 0.000 claims abstract description 26
- 239000003990 capacitor Substances 0.000 claims description 31
- 230000005669 field effect Effects 0.000 claims description 26
- 238000000034 method Methods 0.000 abstract description 4
- 230000001276 controlling effect Effects 0.000 description 11
- 239000002131 composite material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 101000829367 Homo sapiens Src substrate cortactin Proteins 0.000 description 2
- 102100023719 Src substrate cortactin Human genes 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 208000002193 Pain Diseases 0.000 description 1
- 206010040880 Skin irritation Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000036556 skin irritation Effects 0.000 description 1
- 231100000475 skin irritation Toxicity 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
- A61N1/3603—Control systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
- A61N1/3603—Control systems
- A61N1/36034—Control systems specified by the stimulation parameters
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Electrotherapy Devices (AREA)
Abstract
The invention provides a cosmetic instrument current control system and a cosmetic instrument, the system comprises: the controller is used for generating PWM signals and generating the PWM signals, and the PWM signals comprise a first PWM signal with adjustable duty ratio, a second PWM signal with adjustable frequency and a third PWM signal; the amplitude modulation module is used for receiving the first PWM signal and generating a voltage control signal according to the duty ratio of the first PWM signal; the frequency modulation module is used for receiving the second PWM signal and the third PWM signal and generating a frequency control signal according to the frequencies of the second PWM signal and the third PWM signal; and the transformer is used for generating a modulatable waveform for controlling the current of the electrode tip of the beauty instrument according to the voltage control signal and the frequency control signal. The method and the device improve the product performance and meet the requirements of more user groups.
Description
Technical Field
The invention relates to the technical field of beauty equipment, in particular to a beauty instrument current control system and a beauty instrument.
Background
The beauty instrument is a machine for regulating and improving the body and the face according to the physiological function of the human body, and along with the development of the beauty industry, the beauty instrument gradually develops from a huge instrument to a medium-sized or small-sized beauty instrument until the current mainstream hand-held beauty instrument. The existing beauty instrument mainly comprises an electrode tip and a circuit board, wherein the electrode tip is electrically connected with the circuit board, the electrode tip is powered by the circuit board and provides pulse current, so that the skin is stimulated by the pulse current when the electrode tip is contacted with the skin, the blood circulation is enhanced, and the metabolism of the skin or the absorption of skin care products are promoted. However, the existing beauty instrument adopts single pulse current, the amplitude and the frequency cannot be adjusted, the waveform is mainly square wave, the waveform is easy to generate discomfort on human skin due to too fast rising speed of the current, the feeling of stinging is caused, and the user group experience is poor.
Disclosure of Invention
The invention aims to overcome the defects that the existing beauty instrument is easy to prick and has large skin irritation in the using process, and provides a beauty instrument current control system and a beauty instrument.
The technical scheme of the invention provides a beauty instrument current control system, which comprises:
a controller for generating PWM signals including a first PWM signal with an adjustable duty cycle, a second PWM signal with an adjustable frequency, and a third PWM signal;
the amplitude modulation module is used for receiving the first PWM signal and generating a voltage control signal according to the duty ratio of the first PWM signal;
the frequency modulation module is used for receiving the second PWM signal and the third PWM signal and generating a frequency control signal according to the frequencies of the second PWM signal and the third PWM signal;
and the transformer is used for generating a modulatable waveform for controlling the current of the electrode tip of the beauty instrument according to the voltage control signal and the frequency control signal.
Further, the amplitude modulation module includes:
the input end of the input filter circuit is electrically connected with the first output end of the controller and is used for converting the first PWM signal into a direct current signal;
and the non-inverting input end of the first operational amplifier is electrically connected with the output end of the input filter circuit, and the output end of the first operational amplifier is electrically connected with the power supply port of the transformer and is used for amplifying the direct current signal and generating the voltage control signal.
Further, the input filter circuit comprises a first resistor, a second resistor, a third resistor, a first capacitor and a second capacitor,
one end of the first resistor is electrically connected with the first output end of the controller, the other end of the first resistor is electrically connected with one end of the second resistor, the other end of the second resistor is electrically connected with one end of the third resistor, and the other end of the third resistor is electrically connected with the non-inverting input end of the first operational amplifier;
one end of the first capacitor is electrically connected with the other end of the first resistor, and the other end of the first capacitor is grounded;
one end of the second capacitor and the other end of the third resistor are connected to the non-inverting input end of the first operational amplifier in a shared mode, and the other end of the second capacitor is grounded.
Further, the method also comprises the following steps:
and the alarm reminding module is used for carrying out alarm reminding when the output current of the first operational amplifier is greater than a preset current threshold value.
Further, the alarm reminding module comprises a fourth resistor and a second operational amplifier,
one end of the fourth resistor is electrically connected with the output end of the first operational amplifier, and the other end of the fourth resistor is electrically connected with the power supply port of the transformer;
the non-inverting input end of the second operational amplifier is electrically connected with one end of the fourth resistor, and the inverting input end of the second operational amplifier is electrically connected with the other end of the fourth resistor;
furthermore, the alarm reminding module also comprises an output filter circuit, the output filter circuit comprises a fifth resistor and a third capacitor,
one end of the fifth resistor is electrically connected with the output end of the second operational amplifier, and the other end of the fifth resistor is electrically connected with the controller;
one end of the third capacitor and the other end of the fifth resistor are connected to the controller in a shared mode, and the other end of the third capacitor is grounded.
Further, the second PWM signal and the third PWM signal are intermediate frequency signals, the frequency modulation module includes a first frequency adjustment unit and a second frequency adjustment unit,
the first frequency adjusting unit is electrically connected with a second output end of the controller and used for receiving the second PWM signal, adjusting the second PWM signal into a first low-frequency signal and generating a first low-frequency control signal;
the second frequency adjusting unit is electrically connected with a third output end of the controller and used for receiving the third PWM signal, adjusting the third PWM signal into a second low-frequency signal and generating a second low-frequency control signal;
the transformer is further configured to:
controlling the frequency of the waveform according to the first low frequency control signal and/or the second low frequency control signal.
Further, the first frequency adjusting unit comprises a sixth resistor, a seventh resistor and a first field effect transistor,
one end of the sixth resistor is electrically connected with the second output end of the controller, and the other end of the sixth resistor is electrically connected with the grid electrode of the first field effect transistor;
one end of the seventh resistor and the other end of the sixth resistor are connected to the grid of the first field effect transistor in a sharing mode, and the other end of the seventh resistor is grounded;
the source electrode of the first field effect transistor is electrically connected with the first input port of the transformer, the drain electrode of the first field effect transistor is grounded, and the first field effect transistor is switched on or switched off according to the first low-frequency control signal.
Further, the second frequency adjustment unit comprises an eighth resistor, a ninth resistor and a second field effect transistor,
one end of the eighth resistor is electrically connected with the third output end of the controller, and the other end of the eighth resistor is electrically connected with the grid electrode of the second field effect transistor;
one end of the ninth resistor and the other end of the eighth resistor are connected to the grid of the second field effect transistor in common, and the other end of the ninth resistor is grounded;
and the source electrode of the second field effect transistor is electrically connected with the second input port of the transformer, the drain electrode of the second field effect transistor is grounded, and the second field effect transistor is switched on or switched off according to the second low-frequency control signal.
Further, the controller is specifically configured to:
controlling the duty ratio of the PWM signal to rise from a first duty ratio to a second duty ratio according to a first period of a preset cycle;
and according to a second period of the preset cycle, controlling the duty ratio of the PWM signal to be reduced from the second duty ratio to the first duty ratio, wherein the first duty ratio is smaller than the second duty ratio.
The technical scheme of the invention also provides a beauty instrument, which comprises an electrode tip and the beauty instrument current control system, wherein the transformer of the beauty instrument current control system is electrically connected with the electrode tip, and the current of the electrode tip is controlled through the waveform output by the transformer.
After adopting above-mentioned technical scheme, have following beneficial effect:
the beauty instrument current control system provided by the invention generates PWM signals through a controller, wherein the PWM signals comprise a first PWM signal with adjustable duty ratio, a second PWM signal with adjustable frequency and a third PWM signal, then an amplitude modulation module receives the first PWM signal and generates a voltage control signal according to the duty ratio of the first PWM signal, a frequency modulation module receives the second PWM signal and the third PWM signal and generates a frequency control signal according to the frequencies of the second PWM signal and the third PWM signal, and a transformer generates a modulated waveform for controlling the current of an electrode tip of the beauty instrument according to the voltage control signal and the frequency control signal, so that the amplitude and the frequency of the current of the beauty instrument are adjustable, and the requirements of users are met.
According to the cosmetic instrument current control system provided by the invention, the output current of the first operational amplifier is detected in real time through the alarm reminding module, and alarm reminding is carried out when the output current of the first operational amplifier is larger than the preset current threshold value, so that the cosmetic instrument is prevented from being damaged by misoperation.
According to the cosmetic instrument current control system provided by the invention, the first frequency adjusting unit and the second frequency adjusting unit are used for carrying out frequency modulation on the second PWM signal and the third PWM signal, so that composite waveform signals with different frequencies can be output, and when the cosmetic instrument current control system is used, the pricking feeling of current to the skin can be reduced or avoided.
In conclusion, the cosmetic instrument current control system provided by the invention improves the product performance and meets the requirements of more user groups.
Drawings
The disclosure of the present invention will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:
fig. 1 is a schematic structural diagram of a current control system of a beauty instrument according to an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of the amplitude modulation module of FIG. 1;
fig. 3 is a schematic circuit diagram of the frequency modulation module shown in fig. 1;
fig. 4 is a waveform structure diagram of the beauty instrument after amplitude modulation and frequency modulation processing.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings.
It is easily understood that according to the technical solution of the present invention, those skilled in the art can substitute various structures and implementation manners without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as limiting or restricting the technical aspects of the present invention.
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.
As shown in fig. 1 to 3, a cosmetic instrument current control system according to an embodiment of the present invention includes:
a controller 10 for generating PWM signals including a first PWM signal with an adjustable duty ratio, a second PWM signal with an adjustable frequency, and a third PWM signal;
an amplitude modulation module 20, configured to receive the first PWM signal and generate a voltage control signal according to a duty ratio of the first PWM signal;
a frequency modulation module 30, configured to receive the second PWM signal and the third PWM signal, and generate a frequency control signal according to frequencies of the second PWM signal and the third PWM signal;
and a transformer T1 for generating a modulated waveform of current for controlling the electrode tip 40 of the beauty instrument according to the voltage control signal and the frequency control signal.
The beauty instrument current control system provided by the embodiment of the invention comprises a controller 10, an amplitude modulation module 20, a frequency modulation module 30 and a transformer T1.
The controller 10 is used for generating a PWM signal of 100KHZ-160KHZ, the PWM signal including a first PWM signal with adjustable duty ratio, a second PWM signal with adjustable frequency and a third PWM signal, the PWM signals being used for providing a pulse current for the electrode head 40 of the beauty instrument, and preferably, the controller 10 is a Micro Control Unit (MCU).
The amplitude modulation module 20 is configured to receive the first PWM signal, generate a voltage control signal according to a duty ratio of the first PWM signal, output the first PWM signal to the amplitude modulation module 20 through an IO pin of the MCU10, and output an adjustable dc voltage according to the duty ratio of the first PWM signal by the amplitude modulation module 20, so as to provide a power supply for the transformer T1, drive the transformer T1 to start, and amplify the voltage through the transformer T1, thereby controlling a waveform amplitude.
The frequency modulation module 30 is configured to receive the second PWM signal and the third PWM signal, generate a frequency control signal according to the frequencies of the second PWM signal and the third PWM signal, and output waveforms with different frequencies through the transformer T1.
The transformer T1 is used for generating a waveform with adjustable amplitude and frequency according to the voltage control signal and the frequency control signal, and controlling the current flowing through the electrode tip 40 of the cosmetic instrument, so as to realize the adjustment of the amplitude and frequency of the cosmetic instrument current and meet the requirements of users.
Preferably, as shown in fig. 3, the number of the electrode taps 40 of the present embodiment is at least two, and the output end of the transformer T1 is electrically connected to at least two electrode taps EMS1, EMS2, respectively.
According to the cosmetic instrument current control system provided by the embodiment of the invention, the controller generates PWM signals, the PWM signals comprise a first PWM signal with adjustable duty ratio, a second PWM signal with adjustable frequency and a third PWM signal, the amplitude modulation module receives the first PWM signal and generates a voltage control signal according to the duty ratio of the first PWM signal, the frequency modulation module receives the second PWM signal and the third PWM signal and generates a frequency control signal according to the frequencies of the second PWM signal and the third PWM signal, and the transformer generates a modulated waveform for controlling the current of the electrode tip of the cosmetic instrument according to the voltage control signal and the frequency control signal, so that the amplitude and the frequency of the current are adjustable, and the requirements of users are met.
In one embodiment, the amplitude modulation module 20 includes:
an input filter circuit 21, an input end of the input filter circuit 21 is electrically connected to a first output end of the controller 10, and is configured to convert the first PWM signal into a direct current signal;
a first operational amplifier IC1, wherein the non-inverting input terminal of the first operational amplifier IC1 is electrically connected to the output terminal of the input filter circuit 21, and the output terminal of the first operational amplifier IC1 is electrically connected to the power supply port PVCC of the transformer T1 for amplifying the DC signal and generating a voltage control signal
Specifically, the input filter circuit 21 is configured to filter the first PWM signal generated by the controller 10, and convert the first PWM signal into an analog dc signal, where the amplitude of the dc signal may be controlled by the duty ratio of the first PWM.
The first operational amplifier IC1 is used to amplify the dc signal output from the input filter circuit 21, so as to adjust the voltage level of the power supply port PVCC of the transformer T1, and the larger the duty ratio of the first PWM signal is, the larger the voltage level of the power supply port PVCC of the transformer T1 is, and the maximum and minimum peak values of the control waveform are realized by the first operational amplifier IC 1.
In one embodiment, the input filter circuit 21 includes a first resistor R27, a second resistor R28, a third resistor R29, a first capacitor C11 and a second capacitor C12,
one end of the first resistor R27 is electrically connected to the first output end of the controller 10, the other end of the first resistor R27 is electrically connected to one end of the second resistor R28, the other end of the second resistor R28 is electrically connected to one end of the third resistor R29, and the other end of the third resistor R29 is electrically connected to the non-inverting input end of the first operational amplifier IC 1;
one end of the first capacitor C11 is electrically connected with the other end of the first resistor R27, and the other end of the first capacitor C11 is grounded;
one end of the second capacitor C12 and the other end of the third resistor R29 are commonly connected to the non-inverting input terminal of the first operational amplifier IC1, and the other end of the second capacitor C12 is grounded.
Specifically, the first resistor R27, the first capacitor C11, the second resistor R28, the third resistor R29, and the second capacitor C12 form a second-order filter circuit, and the first PWM signal generated by the controller 10 forms a smooth waveform after passing through the second-order filter circuit, so that interference is reduced, and stability is improved.
In one embodiment, the method further comprises the following steps:
and the alarm reminding module 40 is used for carrying out alarm reminding when the output current of the first operational amplifier IC1 is greater than a preset current threshold value.
Specifically, the alarm reminding module 40 is configured to detect the output current of the first operational amplifier IC1 in real time, and when the output current of the first operational amplifier IC1 is greater than a preset current threshold, determine that the electrode tip 40 may touch other metal objects, so as to alarm and remind the user, thereby preventing the cosmetic instrument from being damaged due to misoperation.
In one embodiment, the alarm notification module 40 includes a fourth resistor R24 and a second operational amplifier IC2,
one end of the fourth resistor R24 is electrically connected to the output end of the first operational amplifier IC2, and the other end of the fourth resistor R24 is electrically connected to the power supply port of the transformer T1;
the non-inverting input terminal of the second operational amplifier IC2 is electrically connected to one end of the fourth resistor R24, and the inverting input terminal of the second operational amplifier IC2 is electrically connected to the other end of the fourth resistor R24.
Specifically, the fourth resistor R24 is used for detecting current, and the resistance of the fourth resistor R24 is 0.2 ohms. The fourth resistor R24 detects that the current increases, and the voltage of the fourth resistor R24 increases.
The non-inverting input terminal of the second operational amplifier IC2 is electrically connected to one terminal of the fourth resistor R24, the inverting input terminal of the second operational amplifier IC2 is electrically connected to the other terminal of the fourth resistor R24, so that the fourth resistor R24 and the second operational amplifier IC2 form a subtraction operational amplifier circuit, the front terminal voltage of the fourth resistor R24 is subtracted from the rear terminal voltage of the fourth resistor R24 for amplification, the controller 10 is prevented from detecting too small a current detected by the fourth resistor R24, the current value of the fourth resistor R24 is calculated according to the difference between the front terminal voltage of the fourth resistor R24 and the rear terminal voltage of the fourth resistor R24, and the calculated current value is fed back to the controller 10, and a feedback network is formed. The controller 10 compares the current value flowing through the fourth resistor R24 with a preset current threshold value, and when the current value flowing through the fourth resistor R24 is greater than the preset current threshold value, it indicates that the user uses an operation error, and when the electrode tips EMS1 and EMS2 contact metal objects or objects with excessive water solubility, as shown in fig. 3, the current value flowing through the fourth resistor R24 is greater than the preset current threshold value, and outputs an error alarm to remind the user.
In one embodiment, the alarm reminding module 40 further comprises an output filter circuit 41, the output filter circuit 41 comprises a fifth resistor R39 and a third capacitor C18,
one end of the fifth resistor R39 is electrically connected to the output end of the second operational amplifier IC2, and the other end of the fifth resistor R39 is electrically connected to the controller 10;
one end of the third capacitor C18 and the other end of the fifth resistor R39 are connected to the controller 10, and the other end of the third capacitor C18 is grounded.
Specifically, the fifth resistor R39 and the third capacitor C18 form a filter circuit, and the output signal of the second operational amplifier IC2 is filtered through the fifth resistor R39 and the third capacitor C18, so that interference is reduced, and stability is improved.
In one embodiment, the second PWM signal and the third PWM signal are intermediate frequency signals, the frequency modulation module includes a first frequency adjustment unit 31 and a second frequency adjustment unit 32,
a first frequency adjusting unit 31 electrically connected to the second output terminal of the controller 10, for receiving the second PWM signal, adjusting the second PWM signal into a first low frequency signal, and generating a first low frequency control signal;
a second frequency adjusting unit 32, electrically connected to the third output terminal of the controller 10, for receiving the third PWM signal, adjusting the third PWM signal into a second low frequency signal, and generating a second low frequency control signal;
the transformer T1 is also used to:
the frequency of the waveform is controlled in accordance with the first low frequency control signal and/or the second low frequency control signal.
Specifically, the waveforms of the first low-frequency control signal and the second low-frequency control signal can be modulated by adjusting the duty ratios of the second PWM signal and the third PWM signal, and waveforms with different frequencies are output, the first low-frequency control signal is a main output cycle of the cosmetic instrument, and the waveform of the second low-frequency control signal is modulated on the waveform of the first low-frequency control signal.
The first frequency adjusting unit 31 adjusts the second PWM signal according to the frequency of the second PWM signal output by the controller 10, the second frequency adjusting unit 32 adjusts the third PWM signal according to the frequency of the third PWM signal output by the controller 10, so that the waveform of the third PWM signal is modulated on the waveform of the second PWM signal to form a composite waveform signal with different frequencies.
It should be noted that the first frequency adjustment unit 31 and the second frequency adjustment unit 32 form an interlocking structure, that is, when the first frequency adjustment unit 31 receives the second PWM signal output by the controller 10 to operate, the second frequency adjustment unit 32 cannot receive the third PWM signal output by the controller 10 to operate.
In one embodiment, the first frequency adjustment unit 31 includes a sixth resistor R18, a seventh resistor R16, and a first fet Q5,
one end of the sixth resistor R18 is electrically connected to the second output terminal of the controller 10, and the other end of the sixth resistor R18 is electrically connected to the gate of the first fet Q5;
one end of the seventh resistor R16 and the other end of the sixth resistor R18 are connected to the gate of the first field effect transistor Q5, and the other end of the seventh resistor R16 is grounded;
the source of the first fet Q5 is electrically connected to the first input port of the transformer T1, the drain of the first fet Q5 is grounded, and the first fet Q5 is turned on or off according to the first low-frequency control signal. In one embodiment, the second frequency adjustment unit 32 includes an eighth resistor R32, a ninth resistor R35, and a second fet Q7,
one end of the eighth resistor R32 is electrically connected to the third output terminal of the controller 10, and the other end of the eighth resistor R32 is electrically connected to the gate of the second fet Q7;
one end of the ninth resistor R35 and the other end of the eighth resistor R32 are connected to the gate of the second field effect transistor Q7, and the other end of the ninth resistor R35 is grounded;
the source of the second fet Q7 is electrically connected to the second input port of the transformer T1, the drain of the second fet Q7 is grounded, and the second fet Q7 is turned on or off according to the second low-frequency control signal.
Specifically, the first fet Q5 and the second fet Q7 are normally off, when the controller 10 outputs the second PWM signal, the first fet Q5 is turned on, the second fet Q7 is turned off, a current flows between the power port PVCC of the transformer T1 and the first input port (for example, pins 2 and 3 in fig. 3), and a current is output from the output port (for example, pins 7 and 10 in fig. 3) of the transformer T1; when the controller 10 outputs the third PWM signal, the second fet Q7 is turned on, the first fet Q5 is turned off, and at this time, the current direction of the output port of the transformer T1 is opposite to the current direction when the first fet Q5 is turned on, and the waveform switching of the second PWM signal and the third PWM signal is controlled by the first fet Q5 and the second fet Q7, so that a composite waveform signal with different frequencies can be output, as shown in fig. 4, a triangular wave can be modulated on the basis of a fundamental wave.
It should be noted that fig. 4 only shows one of the complex waveforms, and the user can also modulate different waveforms on the basis of different fundamental waves according to the requirement.
In one embodiment, the controller 10 is specifically configured to:
controlling the duty ratio of the PWM signal to rise from a first duty ratio to a second duty ratio according to a first period of a preset cycle;
and controlling the duty ratio of the PWM signal to be reduced from the second duty ratio to the first duty ratio according to the second period of the preset cycle, wherein the first duty ratio is smaller than the second duty ratio.
Specifically, the controller 10 adjusts the frequencies of the second PWM signal and the third PWM signal by changing the duty ratio of the PWM signal according to a preset period, for example, the controller 10 takes 500 μ s as one period, and controls the duty ratio of the PWM signal to increase from the first duty ratio to the second duty ratio within the first 250 μ s, so that the PWM signal gradually increases; and in the second 250 mu s, the duty ratio of the PWM signal is controlled to be reduced from the second duty ratio to the first duty ratio, so that the PWM signal is gradually reduced, the intermediate frequency signal of 100KHZ-160KHZ is simulated into a low-frequency signal of 1KHZ-3KHZ, and composite waveform signals with different frequencies are output.
The technical scheme of the invention also provides a beauty instrument which comprises an electrode tip and the beauty instrument current control system, wherein the transformer of the beauty instrument current control system is electrically connected with the electrode tip.
Claims (11)
1. A cosmetic instrument current control system, comprising:
a controller for generating PWM signals including a first PWM signal with an adjustable duty cycle, a second PWM signal with an adjustable frequency, and a third PWM signal;
the amplitude modulation module is used for receiving the first PWM signal and generating a voltage control signal according to the duty ratio of the first PWM signal;
the frequency modulation module is used for receiving the second PWM signal and the third PWM signal and generating a frequency control signal according to the frequencies of the second PWM signal and the third PWM signal;
and the transformer is used for generating a modulatable waveform for controlling the current of the electrode tip of the beauty instrument according to the voltage control signal and the frequency control signal.
2. The cosmetic instrument current control system of claim 1, wherein the amplitude modulation module comprises:
the input end of the input filter circuit is electrically connected with the first output end of the controller and is used for converting the first PWM signal into a direct current signal;
and the non-inverting input end of the first operational amplifier is electrically connected with the output end of the input filter circuit, and the output end of the first operational amplifier is electrically connected with the power supply port of the transformer and is used for amplifying the direct current signal and generating the voltage control signal.
3. The cosmetic instrument current control system of claim 2 wherein the input filter circuit comprises a first resistor, a second resistor, a third resistor, a first capacitor and a second capacitor,
one end of the first resistor is electrically connected with the first output end of the controller, the other end of the first resistor is electrically connected with one end of the second resistor, the other end of the second resistor is electrically connected with one end of the third resistor, and the other end of the third resistor is electrically connected with the non-inverting input end of the first operational amplifier;
one end of the first capacitor is electrically connected with the other end of the first resistor, and the other end of the first capacitor is grounded;
one end of the second capacitor and the other end of the third resistor are connected to the non-inverting input end of the first operational amplifier in a shared mode, and the other end of the second capacitor is grounded.
4. The cosmetic instrument current control system of claim 3, further comprising:
and the alarm reminding module is used for carrying out alarm reminding when the output current of the first operational amplifier is greater than a preset current threshold value.
5. The cosmetic instrument current control system of claim 4 wherein the alarm prompt module includes a fourth resistor and a second operational amplifier,
one end of the fourth resistor is electrically connected with the output end of the first operational amplifier, and the other end of the fourth resistor is electrically connected with the power supply port of the transformer;
and the non-inverting input end of the second operational amplifier is electrically connected with one end of the fourth resistor, and the inverting input end of the second operational amplifier is electrically connected with the other end of the fourth resistor.
6. The cosmetic instrument current control system of claim 5, wherein the alarm prompt module further comprises an output filter circuit, the output filter circuit comprising a fifth resistor and a third capacitor,
one end of the fifth resistor is electrically connected with the output end of the second operational amplifier, and the other end of the fifth resistor is electrically connected with the controller;
one end of the third capacitor and the other end of the fifth resistor are connected to the controller in a shared mode, and the other end of the third capacitor is grounded.
7. The beauty instrument current control system of claim 1, wherein said second PWM signal and said third PWM signal are intermediate frequency signals, said frequency modulation module comprises a first frequency adjustment unit and a second frequency adjustment unit,
the first frequency adjusting unit is electrically connected with a second output end of the controller and used for receiving the second PWM signal, adjusting the second PWM signal into a first low-frequency signal and generating a first low-frequency control signal;
the second frequency adjusting unit is electrically connected with a third output end of the controller and is used for receiving the third PWM signal, adjusting the third PWM signal into a second low-frequency signal and generating a second low-frequency control signal;
the transformer is further configured to:
controlling the frequency of the waveform according to the first low frequency control signal and/or the second low frequency control signal.
8. The cosmetic instrument current control system of claim 7 wherein the first frequency adjustment unit comprises a sixth resistor, a seventh resistor, and a first field effect transistor,
one end of the sixth resistor is electrically connected with the second output end of the controller, and the other end of the sixth resistor is electrically connected with the grid electrode of the first field effect transistor;
one end of the seventh resistor and the other end of the sixth resistor are connected to the grid of the first field effect transistor in a sharing mode, and the other end of the seventh resistor is grounded;
the source electrode of the first field effect transistor is electrically connected with the first input port of the transformer, the drain electrode of the first field effect transistor is grounded, and the first field effect transistor is switched on or switched off according to the first low-frequency control signal.
9. The cosmetic instrument current control system of claim 8 wherein the second frequency adjustment unit comprises an eighth resistor, a ninth resistor, and a second field effect transistor,
one end of the eighth resistor is electrically connected with the third output end of the controller, and the other end of the eighth resistor is electrically connected with the grid electrode of the second field effect transistor;
one end of the ninth resistor and the other end of the eighth resistor are connected to the grid of the second field effect transistor in common, and the other end of the ninth resistor is grounded;
and the source electrode of the second field effect transistor is electrically connected with the second input port of the transformer, the drain electrode of the second field effect transistor is grounded, and the second field effect transistor is switched on or switched off according to the second low-frequency control signal.
10. The cosmetic instrument current control system of any one of claims 1-9, wherein the controller is specifically configured to:
controlling the duty ratio of the PWM signal to rise from a first duty ratio to a second duty ratio according to a first period of a preset cycle;
and according to a second period of the preset cycle, controlling the duty ratio of the PWM signal to be reduced from the second duty ratio to the first duty ratio, wherein the first duty ratio is smaller than the second duty ratio.
11. A cosmetic instrument comprising an electrode tip, further comprising a cosmetic instrument current control system as claimed in any one of claims 1 to 10, wherein said transformer of said cosmetic instrument current control system is electrically connected to said electrode tip and controls the current of said electrode tip by said waveform output from said transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011040053.8A CN112169169B (en) | 2020-09-28 | 2020-09-28 | Beauty instrument current control system and beauty instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011040053.8A CN112169169B (en) | 2020-09-28 | 2020-09-28 | Beauty instrument current control system and beauty instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112169169A true CN112169169A (en) | 2021-01-05 |
| CN112169169B CN112169169B (en) | 2023-12-08 |
Family
ID=73944455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011040053.8A Active CN112169169B (en) | 2020-09-28 | 2020-09-28 | Beauty instrument current control system and beauty instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112169169B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101069769A (en) * | 2007-03-23 | 2007-11-14 | 南京济生医疗科技有限公司 | Needle-free pain-relieving instrument and its setting method |
| CN102387630A (en) * | 2010-09-03 | 2012-03-21 | 成都芯源系统有限公司 | multi-mode dimming circuit and dimming method |
| US20140276768A1 (en) * | 2013-03-14 | 2014-09-18 | Ellman International, Inc. | Electrosurgical systems |
| CN106215316A (en) * | 2016-07-28 | 2016-12-14 | 中国人民解放军第150中心医院 | A kind of intermediate frequency therapy signal generator |
| CN109173068A (en) * | 2018-08-30 | 2019-01-11 | 深圳可思美科技有限公司 | Constant current output system, radio-frequency cosmetic instrument and constant current output method |
| CN111111008A (en) * | 2020-01-21 | 2020-05-08 | 苏州小蓝医疗科技有限公司 | Multi-channel electrical stimulation device and waveform output method thereof |
| CN111330156A (en) * | 2020-03-12 | 2020-06-26 | 首都医科大学宣武医院 | Constant-current stimulation circuit, electric stimulator and signal output method thereof |
-
2020
- 2020-09-28 CN CN202011040053.8A patent/CN112169169B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101069769A (en) * | 2007-03-23 | 2007-11-14 | 南京济生医疗科技有限公司 | Needle-free pain-relieving instrument and its setting method |
| CN102387630A (en) * | 2010-09-03 | 2012-03-21 | 成都芯源系统有限公司 | multi-mode dimming circuit and dimming method |
| US20140276768A1 (en) * | 2013-03-14 | 2014-09-18 | Ellman International, Inc. | Electrosurgical systems |
| CN106215316A (en) * | 2016-07-28 | 2016-12-14 | 中国人民解放军第150中心医院 | A kind of intermediate frequency therapy signal generator |
| CN109173068A (en) * | 2018-08-30 | 2019-01-11 | 深圳可思美科技有限公司 | Constant current output system, radio-frequency cosmetic instrument and constant current output method |
| CN111111008A (en) * | 2020-01-21 | 2020-05-08 | 苏州小蓝医疗科技有限公司 | Multi-channel electrical stimulation device and waveform output method thereof |
| CN111330156A (en) * | 2020-03-12 | 2020-06-26 | 首都医科大学宣武医院 | Constant-current stimulation circuit, electric stimulator and signal output method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112169169B (en) | 2023-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2777578B1 (en) | Constant power inverter with crest factor control | |
| EP2826434B1 (en) | Electrosurgical generators | |
| CN107596556B (en) | Percutaneous vagus nerve stimulation system based on music real-time modulation | |
| KR100715343B1 (en) | High frequency electrical electrode stimulator | |
| CN112169169B (en) | Beauty instrument current control system and beauty instrument | |
| JP4757897B2 (en) | Interference wave device and sine wave generator used therefor | |
| JP7236522B1 (en) | Intelligent Heating Adjustable Physical Therapy Machine Based on Bioelectric Feedback | |
| CN216564965U (en) | Constant-current constant-voltage switching circuit and beauty instrument | |
| CN111565794A (en) | Apparatus and method for controlling output of skin care cosmetic instrument | |
| CN115089874A (en) | Self-adaptive micro-current electrotherapy system based on brain wave feedback | |
| CN212466836U (en) | Variable-frequency electrotherapy device and electrotherapy instrument | |
| CN111097103A (en) | Electrical stimulation device capable of generating arbitrary waveforms and waveform output method thereof | |
| CN113018683A (en) | Transcranial real-time alternating current stimulation equipment and current control method | |
| CN219533695U (en) | Control circuit for electrotherapy apparatus and electrotherapy apparatus | |
| CN220045882U (en) | Beauty instrument impedance detection system and beauty instrument | |
| CN113134159A (en) | External electrical stimulation treatment system | |
| CN211751815U (en) | Electrical stimulation device capable of generating arbitrary waveform | |
| CN219271945U (en) | Treatment equipment and multifunctional treatment device | |
| CN205698473U (en) | Low-frequency pulse acupuncture points on the human body physiotherapy table | |
| CN117771541A (en) | Therapeutic instrument with adjustable output waveform and parameters thereof and use method thereof | |
| CN218923573U (en) | Beauty instrument circuit and radio frequency instrument | |
| CN116726392B (en) | Transcranial microcurrent stimulation equipment and control method | |
| KR200241782Y1 (en) | The Low voltage hi pulse signal generator using pc sound card audio frequency | |
| CN219891558U (en) | Control circuit of traditional Chinese medicine therapeutic instrument | |
| CN216904355U (en) | DEMS control circuit for beauty instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Shop 204, Building 8, Greenland Commercial Center, No. 286, Dongle Road, Fuyou Community, Daliang Street, Shunde District, Foshan City, Guangdong Province, 528300 Applicant after: Guangdong Huazhi Beauty Technology Co.,Ltd. Address before: 504, 5th floor, Yingfeng business center, 8 Yixing Road, Junlan community, Beijiao Town, Shunde District, Foshan City, Guangdong Province 528300 Applicant before: Guangdong shiziyan Research Institute beauty Technology Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |