CN109173068B - Constant current output system, radio frequency beauty instrument and constant current output method - Google Patents
Constant current output system, radio frequency beauty instrument and constant current output method Download PDFInfo
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- 238000011105 stabilization Methods 0.000 claims abstract description 16
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 17
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- 210000004304 subcutaneous tissue Anatomy 0.000 description 4
- 102000008186 Collagen Human genes 0.000 description 3
- 108010035532 Collagen Proteins 0.000 description 3
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Abstract
The invention provides a constant current output system, a radio frequency beauty instrument and a constant current output method, which are applied to the radio frequency beauty instrument and comprise the following steps: the current detection unit is used for detecting the output current value of the current stabilization output unit in real time and sending the output current value to the control unit; the control unit is used for receiving the output current value sent by the current detection unit, comparing the output current value with a preset current threshold value, and adjusting the duty ratio of the output PWM rectangular wave in real time according to the comparison result so that the current stabilization output unit outputs constant current according to the control of the PWM rectangular wave. The system can ensure that the current value output by the current stabilization output unit is constant, and further can ensure the curative effect of the radio frequency cosmetic instrument after the constant current output system is applied to the radio frequency cosmetic instrument, improve the using effect of the radio frequency cosmetic instrument, have good practicability and relieve the technical problems of poor using effect and poor practicability of the existing radio frequency cosmetic instrument.
Description
Technical Field
The invention relates to the technical field of skin treatment instruments, in particular to a constant current output system, a radio frequency beauty instrument and a constant current output method.
Background
The radio frequency beauty instrument has the function of removing wrinkles, is in contact with the skin of a human body, and sends out radio waves to enter subcutaneous tissues to enable natural resistance movement of the subcutaneous tissues to generate heat energy, so that the radio frequency beauty instrument has two functions of lifting the skin and promoting collagen regeneration. When radio waves enter subcutaneous tissue, collagen contracts immediately and stimulates the dermis to secrete new collagen fibers, so that the thickness and the density of the dermis of the skin are increased, wrinkles are filled and the looseness is improved.
When the existing radio frequency beauty instrument acts on human skin, because the human impedance (namely resistance value) is not fixed and changes all the time, under the condition of constant voltage, the output current changes all the time along with the change of the human impedance, and further the radio wave acting on subcutaneous tissues is not constant, thus the radio frequency beauty instrument has different curative effects each time, poor using effect and poor practicability.
Disclosure of Invention
In view of the above, the present invention is directed to a constant current output system, a radio frequency beauty instrument and a constant current output method, so as to solve the technical problems of poor using effect and poor practicability of the conventional radio frequency beauty instrument.
In a first aspect, an embodiment of the present invention provides a constant current output system, which is applied to a radio frequency cosmetic apparatus, and includes: the current detection unit, the steady flow output unit and the control unit;
the current detection unit is connected with the steady current output unit and used for detecting the output current value of the steady current output unit in real time and sending the output current value to the control unit;
the control unit is respectively connected with the current detection unit and the steady current output unit and used for receiving the output current value sent by the current detection unit, comparing the output current value with a preset current threshold value, and adjusting the duty ratio of the output PWM rectangular wave in real time according to the comparison result so that the steady current output unit outputs constant current according to the control of the PWM rectangular wave.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the steady flow output unit includes: a power supply switch, a waveform generator and a transformer unit;
the power supply switch is connected with the control unit and used for performing switching action according to the PWM rectangular wave sent by the control unit;
the waveform generator is connected with the power supply switch and used for generating two paths of rectangular complementary waves based on the switching action of the power supply switch;
the transformer unit is connected with the waveform generator through an MOS (metal oxide semiconductor) tube and used for converting two paths of rectangular complementary waves generated by the waveform generator into sine waves and outputting the sine waves to the positive and negative electrodes so as to enable the positive and negative electrodes to act on the skin, wherein the current represented by the obtained sine waves is constant.
With reference to the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the system further includes a lithium battery, L DO power supply chip, and a DC boost power supply chip;
the L DO power supply chip is connected with the lithium battery and is used for carrying out voltage reduction processing on the voltage output by the lithium battery so as to supply power to the control unit by the voltage after voltage reduction processing;
the DC boosting power supply chip is connected with the lithium battery and used for boosting the voltage output by the lithium battery so as to supply power to the waveform generator by using the boosted voltage.
With reference to the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where the control unit includes: and an MCU unit.
With reference to the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where a frequency of the two paths of rectangular complementary waves is 1 MHz.
In a second aspect, an embodiment of the present invention further provides a radio frequency beauty instrument, including: the constant current output system according to the first aspect described above, further comprising: a housing;
the constant current output system is disposed within the housing.
With reference to the second aspect, an embodiment of the present invention provides a first possible implementation manner of the second aspect, where the radio frequency beauty instrument further includes: a control key;
the control key is connected with a control unit in the constant current output system and used for adjusting the on-off state and the working gear of the radio frequency beauty instrument.
With reference to the second aspect, an embodiment of the present invention provides a second possible implementation manner of the second aspect, where the radio frequency beauty instrument further includes: the device comprises an indicator light, a gear mark and a lens;
the pilot lamp set up in the shell, just be provided with on the pilot lamp the lens, be provided with on the lens gear sign, wherein, the pilot lamp with gear sign is used for instructing the cosmetic appearance current operating position of radio frequency.
In a third aspect, an embodiment of the present invention further provides a constant current output method, which is applied to the control unit of the constant current output system in any one of the first aspect, and includes:
receiving an output current value sent by a current detection unit, wherein the output current value is obtained by the current detection unit through real-time detection on a current stabilization output unit;
comparing the output current value with a preset current threshold value to obtain a comparison result;
and adjusting the duty ratio of the output PWM rectangular wave in real time according to the comparison result so that the current stabilization output unit outputs constant current according to the control of the PWM rectangular wave.
The embodiment of the invention has the following beneficial effects:
when the existing radio frequency beauty instrument acts on human skin, because the human impedance is not fixed and changes all the time, under the condition of constant voltage, the output current changes all the time along with the change of the human impedance, so that the use effect of the radio frequency beauty instrument is poor, and the practicability is poor. Compared with the prior art, in the constant current output system, the current detection unit can detect the output current value of the steady current output unit in real time and send the output current value to the control unit, and then the control unit compares the output current value with the preset current threshold and adjusts the duty ratio of the output PWM rectangular wave in real time according to the comparison result, so that the steady current output unit outputs the constant current according to the control of the PWM rectangular wave. The system can ensure that the current value output by the current stabilization output unit is constant, and further can ensure the curative effect of the radio frequency cosmetic instrument after the constant current output system is applied to the radio frequency cosmetic instrument, improve the using effect of the radio frequency cosmetic instrument, have good practicability and relieve the technical problems of poor using effect and poor practicability of the existing radio frequency cosmetic instrument.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a constant current output system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a constant current output system according to an embodiment of the present invention;
fig. 3 is a schematic view of a radio frequency beauty instrument according to an embodiment of the present invention;
fig. 4 is a flowchart of a constant current output method according to an embodiment of the present invention.
Icon:
11-current detection unit, 12-current stabilization output unit, 13-control unit, 14-lithium battery, 15-L DO power chip, 16-DC boosting power chip, 17-constant current output system, 18-shell, 121-power supply switch, 122-waveform generator and 123-transformer unit.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For the understanding of the present embodiment, a detailed description will be given of a constant current output system disclosed in the embodiment of the present invention.
The first embodiment is as follows:
a constant current output system, referring to fig. 1, applied to a radio frequency beauty instrument, comprising: a current detection unit 11, a steady current output unit 12 and a control unit 13;
the current detection unit 11 is connected with the steady current output unit 12, and is used for detecting the output current value of the steady current output unit 12 in real time and sending the output current value to the control unit 13;
the control unit 13 is connected to the current detection unit 11 and the steady current output unit 12, and is configured to receive an output current value sent by the current detection unit 11, compare the output current value with a preset current threshold, and adjust a duty ratio of an output PWM rectangular wave in real time according to a comparison result, so that the steady current output unit 12 outputs a constant current according to the control of the PWM rectangular wave.
In the embodiment of the invention, under the condition of constant voltage, the human body impedance changes all the time, so the current output by the radio frequency beauty instrument changes all the time along with the change of the human body impedance, and the radio frequency beauty instrument has different curative effects each time, poor using effect and poor practicability.
For this reason, the inventor thinks that the current output by the radio frequency beauty instrument is controlled to be constant by adopting a PID control mode.
Specifically, the current detection unit 11 detects the output current value of the current stabilization output unit 12 in real time, and sends the output current value to the control unit 13, and then the control unit 13 compares the output current value with a preset current threshold value, and adjusts the duty ratio of the output PWM rectangular wave in real time according to the comparison result, so that the current stabilization output unit 12 outputs a constant current according to the control of the PWM rectangular wave, and then the constant current acts on the skin, thereby ensuring the curative effect, improving the use effect of the radio frequency beauty instrument, and having good practicability.
When the existing radio frequency beauty instrument acts on human skin, because the human impedance is not fixed and changes all the time, under the condition of constant voltage, the output current changes all the time along with the change of the human impedance, so that the use effect of the radio frequency beauty instrument is poor, and the practicability is poor. Compared with the prior art, in the constant current output system, the current detection unit can detect the output current value of the steady current output unit in real time and send the output current value to the control unit, and then the control unit compares the output current value with the preset current threshold and adjusts the duty ratio of the output PWM rectangular wave in real time according to the comparison result, so that the steady current output unit outputs the constant current according to the control of the PWM rectangular wave. The system can ensure that the current value output by the current stabilization output unit is constant, and further can ensure the curative effect of the radio frequency cosmetic instrument after the constant current output system is applied to the radio frequency cosmetic instrument, improve the using effect of the radio frequency cosmetic instrument, have good practicability and relieve the technical problems of poor using effect and poor practicability of the existing radio frequency cosmetic instrument.
The constant current output system of the present invention is briefly described above, and the details thereof are described below.
In an alternative embodiment of the present invention, referring to fig. 2, the steady flow output unit 12 includes: a power supply switch 121, a waveform generator 122, and a transformer unit 123;
the power supply switch 121 is connected to the control unit 13, and is configured to perform a switching operation according to the PWM rectangular wave sent by the control unit 13;
the waveform generator 122 is connected to the power supply switch 121, and is configured to generate two paths of rectangular complementary waves based on the switching action of the power supply switch 121;
the transformer unit 123 is connected to the waveform generator 122 through a MOS transistor, and is configured to convert the two paths of rectangular complementary waves generated by the waveform generator 122 into sine waves, and output the sine waves to the positive and negative electrodes, so that the positive and negative electrodes act on the skin, where a current represented by the obtained sine waves is constant.
Specifically, the control unit 13 includes: an MCU unit; the frequency of the two paths of rectangular complementary waves is 1 MHz. And the current detection unit 11 is connected with the output end of the transformer unit 123 and is used for detecting the output current value in real time.
In an alternative embodiment of the present invention, referring to FIG. 2, the system further comprises a lithium battery 14, L DO power chip 15 and a DC boost power chip 16;
l DO power chip 15 is connected to lithium battery 14, and is used to step down the voltage output by lithium battery 14, so as to supply power to control unit 13 by the voltage after step down;
the DC boost power supply chip 16 is connected to the lithium battery 14, and is configured to perform a boost process on the voltage output by the lithium battery 14, so as to supply the boosted voltage to the waveform generator 122.
Referring to fig. 2, the structure and the working process of the constant current output system of the present invention after being applied to the rf cosmetic instrument will be described in detail:
the radio frequency beauty instrument is provided with a control key, the radio frequency beauty instrument is started by pressing the key for a short time, after the radio frequency beauty instrument is started, the working gear of the radio frequency beauty instrument can be adjusted by pressing the key for a short time, and the radio frequency beauty instrument is shut down by pressing the key for a long time.
The lithium battery 14 (in the present invention, two 3.7V lithium batteries 14 are connected in series) performs voltage reduction processing on the one hand by the L DO power chip 15 to supply power to the MCU, and performs voltage increase processing on the other hand by the DC voltage-increasing power chip 16 to supply power to the waveform generator 122.
And under the power-off state, the MCU unit is in a dormant state, the key is triggered, and the MCU unit is awakened. After the power supply is started, the MCU unit defaults that the output period is 10ms, the PWM rectangular wave with the duty ratio of 15% controls the on-off of the power supply switch 121, and then the waveform generator 122 can output two paths of 1MHz rectangular complementary waves based on the on-off of the power supply switch 121. Specifically, the two 1MHz rectangular complementary waves are output only when the power supply of the waveform generator 122 is powered on, and are not output when the power supply of the waveform generator 122 is not powered on. Thus, only 15% of the time outputs two 1MHz rectangular complementary waves in each 10ms period, i.e., only 1.5ms of the time waveform generator 122 outputs two 1MHz rectangular complementary waves in each 10ms period.
The two paths of 1MHz rectangular complementary waves control the transformer unit 123 to generate sine waves by controlling the on-off of the MOS tube, and the sine waves are output to the positive electrode and the negative electrode. At this time, the current detection unit 11 detects the output current value output from the transformer unit 123 in real time.
When the gear which is turned on at the moment is the first gear, when the positive electrode and the negative electrode are in contact with the skin, the duty ratio of the PWM rectangular wave which is regulated and output by the MCU unit is increased to 60%, the duty ratio is increased, the output current value which is output by the transformer unit 123 and detected by the current detection unit 11 is increased, the detected output current value is sent to the MCU unit in real time, the MCU unit judges the output current value in real time, and if the output current value exceeds a first preset current threshold value, the duty ratio of the PWM rectangular wave which is regulated and output is reduced (the reduction amplitude is small) so that the output current value is reduced; and if the output current value is smaller than the first preset current threshold value, the MCU unit adjusts the duty ratio of the output PWM rectangular wave to increase (the rising amplitude is small) so as to increase the output current value. The process of detection and adjustment is thus always cycled and is very fast, so that the value of the output current is approximately constant, with the magnitude of the first preset current threshold. Since the voltage supplied by the DC boost power supply chip 16 to the waveform generator 122 is constant, the output power of the rf beauty instrument is constant according to the power calculation formula P ═ U × I.
When the gear which is turned on at the moment is a second gear, when the positive electrode and the negative electrode are in contact with the skin, the duty ratio of the PWM rectangular wave which is regulated and output by the MCU unit is increased to 70%, the duty ratio is increased, the output current value which is output by the transformer unit 123 and detected by the current detection unit 11 is increased, the detected output current value is sent to the MCU unit in real time, the MCU unit judges the output current value in real time, and if the output current value exceeds a second preset current threshold value, the duty ratio of the PWM rectangular wave which is regulated and output is reduced, so that the output current value is reduced; and if the output current value is smaller than the second preset current threshold value, the MCU unit adjusts the duty ratio of the output PWM rectangular wave to increase so as to increase the output current value. The process of detection and adjustment is thus always cycled and is very fast, so that the output current value is approximately constant, with the magnitude of the second preset current threshold. Since the voltage supplied by the DC boost power supply chip 16 to the waveform generator 122 is constant, the output power of the rf beauty instrument is constant according to the power calculation formula P ═ U × I.
When the gear which is turned on at the moment is a third gear, when the positive electrode and the negative electrode are in contact with the skin, the duty ratio of the PWM rectangular wave which is regulated and output by the MCU unit is increased to 85%, the duty ratio is increased, the output current value which is output by the transformer unit 123 and detected by the current detection unit 11 is increased, the detected output current value is sent to the MCU unit in real time, the MCU unit judges the output current value in real time, and if the output current value exceeds a third preset current threshold value, the duty ratio of the PWM rectangular wave which is regulated and output is reduced, so that the output current value is reduced; and if the output current value is smaller than the third preset current threshold value, the MCU unit adjusts the duty ratio of the output PWM rectangular wave to increase so as to increase the output current value. The process of detection and adjustment is thus always cycled and is very fast, so that the output current value is approximately constant, with the magnitude of the third preset current threshold. Since the voltage supplied by the DC boost power supply chip 16 to the waveform generator 122 is constant, the output power of the rf beauty instrument is constant according to the power calculation formula P ═ U × I.
After the constant current output system is applied to the radio frequency beauty instrument, the current output by the radio frequency beauty instrument on each gear can be constant, and the constant current output system has good beauty effect and practicability.
Example two:
a radio frequency beauty instrument, referring to fig. 3, comprising the constant current output system 17 of the first embodiment, further comprising: a housing 18;
the constant current output system 17 is disposed within a housing 18.
In an optional embodiment of the present invention, the rf cosmetic device further comprises: a control key;
the control key is connected with a control unit in the constant current output system and is used for adjusting the on-off state and the working gear of the radio frequency beauty instrument.
In an optional embodiment of the present invention, the rf cosmetic device further comprises: the device comprises an indicator light, a gear mark and a lens;
the pilot lamp sets up in the shell, and is provided with the lens on the pilot lamp, is provided with the gear sign on the lens, and wherein, pilot lamp and gear sign are used for instructing the cosmetic appearance current work gear of radio frequency.
Specifically, the indicator light is connected with a control unit in the constant current output system and indicates according to the control of the control unit.
For details in the second embodiment, reference may be made to the description in the first embodiment, which is not repeated herein.
After the radio frequency beauty instrument acts on the skin of a human body, constant current can be output under the control of the constant current output system, and the radio frequency beauty instrument has good use effect and good real-time property.
Example three:
a constant current output method, referring to fig. 4, applied to the control unit of the constant current output system in the first embodiment, includes:
step S401, receiving an output current value sent by a current detection unit, wherein the output current value is obtained by the current detection unit through real-time detection on a current stabilization output unit;
step S402, comparing the output current value with a preset current threshold value to obtain a comparison result;
and S403, adjusting the duty ratio of the output PWM rectangular wave in real time according to the comparison result so that the current stabilization output unit outputs constant current according to the control of the PWM rectangular wave.
For details in the third embodiment, reference may be made to the description in the first embodiment, and details are not repeated herein.
The constant current output system, the radio frequency cosmetic apparatus, and the computer program product of the constant current output method according to the embodiments of the present invention include a computer-readable storage medium storing a program code, where instructions included in the program code may be used to execute the method described in the foregoing method embodiments, and specific implementation may refer to the method embodiments, and will not be described herein again.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A constant current output system, characterized in that, be applied to radio frequency beauty instrument, includes: the current detection unit, the steady flow output unit and the control unit;
the current detection unit is connected with the steady current output unit and used for detecting the output current value of the steady current output unit in real time and sending the output current value to the control unit;
the control unit is respectively connected with the current detection unit and the current stabilization output unit and is used for receiving the output current value sent by the current detection unit, comparing the output current value with a preset current threshold value and adjusting the duty ratio of the output PWM rectangular wave in real time according to the comparison result so that the current stabilization output unit outputs constant current according to the control of the PWM rectangular wave;
wherein, the stationary flow output unit includes: a power supply switch, a waveform generator and a transformer unit;
the power supply switch is connected with the control unit and used for performing switching action according to the PWM rectangular wave sent by the control unit;
the waveform generator is connected with the power supply switch and used for generating two paths of rectangular complementary waves based on the switching action of the power supply switch;
the transformer unit is connected with the waveform generator through an MOS (metal oxide semiconductor) tube and used for converting two paths of rectangular complementary waves generated by the waveform generator into sine waves and outputting the sine waves to the positive and negative electrodes so as to enable the positive and negative electrodes to act on the skin, wherein the current represented by the obtained sine waves is constant.
2. The system of claim 1, further comprising a lithium battery, L DO power chip and a DC boost power chip;
the L DO power supply chip is connected with the lithium battery and is used for carrying out voltage reduction processing on the voltage output by the lithium battery so as to supply power to the control unit by the voltage after voltage reduction processing;
the DC boosting power supply chip is connected with the lithium battery and used for boosting the voltage output by the lithium battery so as to supply power to the waveform generator by using the boosted voltage.
3. The system of claim 1, wherein the control unit comprises: and an MCU unit.
4. The system according to claim 1, wherein the frequency of the two rectangular complementary waves is 1 MHz.
5. A radio frequency cosmetic apparatus, comprising: the constant current output system according to any one of claims 1 to 4, further comprising: a housing;
the constant current output system is disposed within the housing.
6. The radiofrequency cosmetic instrument of claim 5, further comprising: a control key;
the control key is connected with a control unit in the constant current output system and used for adjusting the on-off state and the working gear of the radio frequency beauty instrument.
7. The radiofrequency cosmetic instrument of claim 5, further comprising: the device comprises an indicator light, a gear mark and a lens;
the pilot lamp set up in the shell, just be provided with on the pilot lamp the lens, be provided with on the lens gear sign, wherein, the pilot lamp with gear sign is used for instructing the cosmetic appearance current operating position of radio frequency.
8. A constant current output method, characterized in that a control unit applied to the constant current output system according to any one of the above claims 1 to 4, comprises:
receiving an output current value sent by a current detection unit, wherein the output current value is obtained by the current detection unit through real-time detection on a current stabilization output unit;
comparing the output current value with a preset current threshold value to obtain a comparison result;
and adjusting the duty ratio of the output PWM rectangular wave in real time according to the comparison result so that the current stabilization output unit outputs constant current according to the control of the PWM rectangular wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811016412.9A CN109173068B (en) | 2018-08-30 | 2018-08-30 | Constant current output system, radio frequency beauty instrument and constant current output method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811016412.9A CN109173068B (en) | 2018-08-30 | 2018-08-30 | Constant current output system, radio frequency beauty instrument and constant current output method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109173068A CN109173068A (en) | 2019-01-11 |
| CN109173068B true CN109173068B (en) | 2020-07-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110543206A (en) * | 2019-08-28 | 2019-12-06 | 歌尔股份有限公司 | current and voltage regulating method, device, equipment and storage medium |
| CN110840553A (en) * | 2019-12-16 | 2020-02-28 | 武汉好维来科技有限公司 | AI energy device with adjustable algorithm logic for radio frequency beauty instrument and control method |
| CN112043958A (en) * | 2020-09-25 | 2020-12-08 | 广州皓醒湾科技有限公司 | Control method and device of beauty instrument and radio frequency beauty instrument |
| CN112169169B (en) * | 2020-09-28 | 2023-12-08 | 广东花至美容科技有限公司 | Beauty instrument current control system and beauty instrument |
| CN113952612A (en) * | 2021-10-29 | 2022-01-21 | 广东时光颜究所美容科技有限公司 | Cosmetic instrument radio frequency output control method, storage medium and electronic equipment |
| CN114681801A (en) * | 2022-03-16 | 2022-07-01 | 深圳市宗匠科技有限公司 | Radio frequency beauty instrument and constant power control method and device thereof |
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| CN1075939C (en) * | 1993-08-27 | 2001-12-12 | 中国人民解放军第四军医大学第二附属医院 | Ultra-high frequency beautifying instrument |
| CN2250752Y (en) * | 1996-03-29 | 1997-04-02 | 西安工业学院 | Ultrasonic electrotherapeutic skin care beautifying apparatus |
| JP4901818B2 (en) * | 2008-07-10 | 2012-03-21 | 健康コーポレーション株式会社 | Ultrasonic beauty device with iontophoresis function |
| CN101917120B (en) * | 2010-07-22 | 2012-10-03 | 魏其萃 | Device for controlling high precision peak inductive current of switch power supply |
| CN105999543A (en) * | 2016-06-29 | 2016-10-12 | 深圳可思美科技有限公司 | Radio frequency beauty instrument |
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