CN116196553A - Temperature control method and system based on load feedback and radio frequency beauty instrument - Google Patents

Temperature control method and system based on load feedback and radio frequency beauty instrument Download PDF

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CN116196553A
CN116196553A CN202210727921.2A CN202210727921A CN116196553A CN 116196553 A CN116196553 A CN 116196553A CN 202210727921 A CN202210727921 A CN 202210727921A CN 116196553 A CN116196553 A CN 116196553A
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temperature
radio frequency
threshold
electrode
real
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邵明绪
赵鹏洋
安凯
王妍
李谈
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Xi'an Shijiusui Information Technology Co ltd
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Xi'an Shijiusui Information Technology Co ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/40—Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals
    • A61N1/403—Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals for thermotherapy, e.g. hyperthermia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • A61N1/08—Arrangements or circuits for monitoring, protecting, controlling or indicating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The disclosure provides a temperature control method, a system and a radio frequency beauty instrument based on load feedback, wherein the method comprises the following steps: acquiring a temperature control curve of an electrode of the radio frequency beauty instrument in a preset period, wherein the temperature control curve is a change curve of target temperature and radio frequency time of the electrode; acquiring a target temperature of the electrode in an ith control period according to a temperature control curve; detecting the real-time temperature of the electrode in the ith control period, and acquiring the difference information of the target temperature and the real-time temperature; the i-th control period belongs to one of the preset periods; adjusting working parameters of the radio frequency beauty instrument in the (i+1) th control period according to the difference information; the operating parameters include at least one of: radio frequency power, radio frequency. The temperature control method can improve the accuracy of temperature control of the beauty instrument.

Description

Temperature control method and system based on load feedback and radio frequency beauty instrument
Technical Field
The disclosure relates to the technical field of beauty instruments, in particular to a temperature control method, a temperature control system and a radio frequency beauty instrument based on load feedback.
Background
The radio frequency beauty instrument is an instrument for applying power radio frequency energy based on specific waveforms to human skin; when the skin care device is used, the radio frequency output electrode acts on human skin to generate radio frequency current, so that the human skin is internally heated by conducting current and displacement current, and the skin care effect is achieved.
When the radio frequency current passes through the epidermis to reach the dermis and is blocked by the resistance of the cell tissues, the high frequency oscillation generates heat energy to denature collagen in the dermis so as to excite an in-vivo healing mechanism to enable the elastic fiber cells to generate new collagen.
Collagen is a main substance of dermis layers of skin, the temperature range of collagen recombination regeneration is 45-55 ℃, scalding appears when the human epidermis is above 43 ℃, skin damage is an exponential function of temperature, and the aim of reaching the maximum critical value within the temperature range without damaging the skin is challenging.
In the related art, in the radio frequency beauty instrument, the installation position of the temperature sensor, the temperature conduction structure, the characteristics of the temperature sensor, the heat capacity and the heat conductivity of the heat conducting medium and other factors are restricted, the temperature sensor cannot timely and accurately reflect the actual temperature of the human epidermis, and when the radio frequency heating is performed based on inaccurate temperature data, the skin tissues may be scalded. Therefore, how to improve the accuracy of temperature control of the radio frequency cosmetic instrument is an important problem to be solved.
Disclosure of Invention
In order to overcome the problems in the related art, embodiments of the present disclosure provide a temperature control method, system and radio frequency beauty apparatus based on load feedback.
In a first aspect, the present application provides a temperature control method based on load feedback, where the method is applied to a radio frequency beauty instrument, the method includes: acquiring a temperature control curve of an electrode of the radio frequency beauty instrument in a preset period, wherein the temperature control curve is a change curve of target temperature and radio frequency time of the electrode; acquiring a target temperature of the electrode in an ith control period according to the temperature control curve; detecting the real-time temperature of the electrode in the ith control period, and acquiring the difference information of the target temperature and the real-time temperature; the ith control period belongs to one of the preset periods; adjusting working parameters of the radio frequency beauty instrument in an (i+1) th control period according to the difference information; the operating parameters include at least one of: radio frequency power, radio frequency.
In a second aspect, the present application provides a temperature control system based on load feedback, the system being applied to a radio frequency cosmetic instrument, the system comprising: the acquisition module is used for acquiring a temperature control curve of an electrode of the radio frequency beauty instrument in a preset period, wherein the temperature control curve is a change curve of target temperature and radio frequency time of the electrode; acquiring a target temperature of the electrode in an ith control period according to the temperature control curve; the processing module is used for detecting the real-time temperature of the electrode in the ith control period and acquiring the difference information of the target temperature and the real-time temperature; the ith control period belongs to one of the preset periods; the control module is used for adjusting working parameters of the radio frequency beauty instrument in the (i+1) th control period according to the difference information; the operating parameters include at least one of: radio frequency power, radio frequency.
In a third aspect, the present application provides a radio frequency cosmetic instrument comprising a memory and a processor; the memory is used for storing computer instructions; the processor is configured to perform the temperature control method of any one of the above.
According to the temperature control method based on load feedback, the target temperature value of the electrode is used as a control target, a PID control method is adopted, and the working parameters of the radio frequency beauty instrument in the (i+1) th control period are adjusted according to the difference information of the real-time temperature of the electrode and the target temperature in the (i) th control period, so that the temperature of the electrode dynamically changes along a set temperature control curve. Thereby, the accuracy of the temperature control of the radio frequency beauty instrument is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flowchart of a temperature control method according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a radio frequency cosmetic device according to an embodiment of the present application.
Fig. 3 is a schematic diagram of a temperature control curve according to an embodiment of the present application.
Fig. 4 is a schematic diagram of a temperature control curve according to an embodiment of the present disclosure.
Fig. 5 is a schematic diagram III of a temperature control curve according to an embodiment of the present application.
Fig. 6 is a schematic diagram of a temperature control curve according to an embodiment of the present disclosure.
Fig. 7 is a schematic diagram of a temperature control curve according to an embodiment of the present disclosure.
Fig. 8 is a schematic structural diagram of a temperature control system according to an embodiment of the present application.
Fig. 9 is a schematic structural diagram of a temperature control system according to an embodiment of the present application.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments and the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. The exemplary embodiments of the present invention and the descriptions thereof are used herein to explain the present invention, but are not intended to limit the invention.
Regarding the mechanism of action of radio frequency in the cosmetic field, the effect of radio frequency treatment is mostly based on collagen remodeling and local metabolism acceleration, different cosmetic care effects brought by different temperatures, and the temperature of human tissues in the treatment process is closely related to the final effect.
Research shows that the natural processes such as metabolism can be accelerated at 37-44 ℃; while the conformation of proteins including collagen changes at 44-45 ℃ and cells die; the temperature of 60-70 ℃ can denature the lower protein, the collagen and the hemoglobin are coagulated, and the collagen fiber is contracted; high temperatures of 90-100 ℃ can then cause the formation of extracellular vacuoles, leading to evaporation of the liquid; temperatures above 100 ℃ can carbonize the tissue.
Regarding the radio frequency cosmetic care effect and the radio frequency action time, the relationship between the cosmetic care effect and the action time is not negligible. It was found that several milliseconds at a temperature of 70-90 ℃ resulted in coagulation of the tissue, several seconds at 45 ℃ resulted in irreversible damage, and several tens of minutes at 42 ℃ resulted in death of most sensitive cells.
In order to avoid skin damage, the temperature of the skin tissue at non-invasive radio frequency should not exceed 40-43 ℃, and by prolonging the treatment time and maintaining a safe temperature for a longer time, the optimal skin care effect can be obtained more easily and safely.
In the related art, in the radio frequency beauty instrument, the installation position of the temperature sensor, the temperature conduction structure, the characteristics of the temperature sensor, the heat capacity and the heat conductivity of the heat conducting medium and other factors are restricted, the temperature sensor cannot timely and accurately reflect the actual temperature of the human epidermis, and when the radio frequency heating is performed based on inaccurate temperature data, the skin tissues may be scalded.
The application provides a temperature control method based on load feedback, which can improve the accuracy of temperature control of a radio frequency beauty instrument, and the temperature control method provided by the embodiment of the disclosure is described in detail below.
Fig. 1 is a schematic flow chart of a temperature control method provided by an embodiment of the present disclosure, referring to fig. 1, a temperature control method based on load feedback provided in the present application may include the following steps:
step 101: acquiring a temperature control curve of an electrode of the radio frequency beauty instrument in a preset period, wherein the temperature control curve is a change curve of target temperature and radio frequency time of the electrode; and acquiring the target temperature of the electrode in the ith control period according to the temperature control curve.
Referring to fig. 2, the temperature control method provided by the embodiment of the disclosure may be applied to a radio frequency cosmetic instrument, where the radio frequency cosmetic instrument transmits radio frequency energy to deep subcutaneous tissue through an electrode, and generates an alternating electromagnetic field at a specific depth under the skin, the alternating electromagnetic field acts on water molecules in collagen, and the water molecules generate heat in the vibration rotation process, so that a cosmetic care effect is achieved through a tissue thermal effect, and collagen fibers in skin tissues are contracted.
Local temperature increases in the skin can create pseudo-wounds in skin tissue. Skin tissue can repair and regenerate skin with local pseudo-wound, and the generated collagen hyperplasia can repair aged and damaged collagen layers.
In the following, a function of the target temperature and the radio frequency time t is defined as f (t), and a function curve of f (t) represents a temperature control curve of an electrode of the radio frequency beauty instrument in a preset period. In the ith control period, if the accumulated heating duration at the current time is t0, calculating the target temperature at the current time as f (t) according to a function f (t) 0 )。
At reference power P in the ith control period 0 And carrying out radio frequency heating on skin tissues, and acquiring the target temperature of the electrode at the current time t according to a temperature control curve. In the ith control period, when the accumulated heating duration at the current time t is t0, calculating the target temperature at the current time as f (t) according to the temperature control curve f (t) 0 )。
Step 102: detecting the real-time temperature of the electrode in the ith control period, and acquiring the difference information of the target temperature and the real-time temperature; the i-th control period belongs to one of the preset periods.
When the electrode of the radio frequency beauty instrument is attached to the skin surface, the temperature sensor is used for detecting the real-time temperature of the electrode at the current moment, and the real-time temperature of the electrode detected by the temperature sensor at the current moment is used as feedback. And positioning the starting moment or the starting temperature of heating according to the real-time temperature and the temperature control curve of the electrode at the current moment.
In the facial care process of a user by holding the beauty instrument, the end face of the electrode is contacted with the surface of the skin, the skin area is used as a load when the electrode is contacted with the skin, the electrode formed by the positive electrode and the negative electrode supplies high-frequency alternating current signals to the load, radio-frequency energy is transferred to deep subcutaneous tissues, and high-frequency oscillation generates heat energy inside the skin tissues. The skin tissue conducts heat to the electrode, and the real-time temperature of the electrode at the current moment can indirectly reflect the real-time temperature of the epidermis of the human body.
Step 103: and adjusting working parameters of the radio frequency beauty instrument in the (i+1) th control period according to the difference information.
In practical application, the ith control period and the (i+1) th control period belong to two continuous periods in the preset period, a PID control method is adopted, difference information between target temperature and real-time temperature of the electrode of the ith control period is used as input of a PID controller, and radio frequency power of the radio frequency beauty instrument in the (i+1) th control period is calculated. The PID controller uses the following algorithm:
Figure 208904DEST_PATH_IMAGE001
wherein Kp is a proportional gain, and Kp is in reciprocal relation with the proportionality; tt is the integration time constant; TD is a differential time constant; u (t) is an output signal of the PID controller, for example, the radio frequency power of the radio frequency beauty instrument in the (i+1) th control period; e (t) is the difference information between the real-time temperature of the electrode and the target temperature.
The PID controller is a linear controller that can constitute a control deviation from an actual output value based on a given value. The ratio (P), integral (I) and derivative (D) of the deviation are linearly combined to form a control quantity, so as to control the controlled object.
According to the temperature control method based on load feedback, the target temperature value of the electrode is used as a control target, a PID control method is adopted, and the working parameters of the radio frequency beauty instrument in the (i+1) th control period are adjusted according to the difference information of the real-time temperature of the electrode and the target temperature in the (i) th control period, so that the temperature of the electrode dynamically changes along a set temperature control curve. Thereby, the accuracy of the temperature control of the radio frequency beauty instrument is improved.
Under the condition that the temperature sensor cannot timely and accurately reflect the skin temperature of a human body, the temperature of the control electrode dynamically changes along a set temperature control curve, so that the problem that skin scald possibly occurs in the heating process can be solved, and the radio frequency time and the target temperature of the electrode are accurate and controllable.
In one embodiment, acquiring a temperature control curve of an electrode of the radio frequency cosmetic instrument for a preset period of time may include the steps of:
step 201: acquiring preset parameter information, wherein the preset parameter information comprises a first threshold value and a second threshold value; the first threshold value is a target temperature value at a first moment, and the second threshold value is a target temperature value at a second moment; the time range of the preset period is from a first time t1 to a second time t2, and the first threshold value is smaller than the second threshold value.
Referring to fig. 3, the target temperature value at the first time t1 is 25 ℃, and the target temperature value at the second time t2 is 43 ℃. Acquiring preset parameter information, wherein the preset parameter information comprises a target temperature value 25 ℃ at a first moment t1 and a target temperature value 43 ℃ at a second moment t2; the time range of the preset period is denoted as [ t1, t2] corresponding to a duration of 15 seconds, 20 seconds or 30 seconds.
According to the temperature control method, the temperature of the electrode can be controlled to rise from 25 ℃ to 43 ℃ according to the temperature control curve, and the temperature of the sensor is always along the set temperature rising curve, so that the radio frequency time from the initial temperature to the end temperature can be calculated according to the temperature rising curve, and the accuracy of the radio frequency time of skin tissues is improved.
Step 202: and performing numerical fitting on parameters in the preset parameter information by adopting a second-order curve to obtain a temperature control curve of the electrode of the radio frequency beauty instrument in a preset period.
Referring to fig. 3, according to the temperature control method based on load feedback provided by the embodiment of the disclosure, a second-order curve is adopted to fit a change curve of electrode temperature and radio frequency time according to the temperature step response characteristic of the whole temperature measurement system. The temperature control curve can be used as the temperature rising curve of human epidermis in the radio frequency heating process, and the temperature control curve has the characteristics of rapid temperature rising speed and slow temperature rising speed.
In practical application, taking step response characteristics of the temperature detection system into consideration, in different temperature measurement systems, preset parameter information matched with the temperature measurement system can be obtained, and a second-order curve is adopted to carry out numerical fitting on parameters in the preset parameter information, so that a temperature control curve of an electrode of the radio frequency beauty instrument in a preset period is obtained. Therefore, fitting can be performed again according to different temperature measuring systems, and step response characteristics of the temperature measuring systems are matched.
In practical application, for different users, preset parameter information set by the users can be obtained, and a second-order curve is adopted to carry out numerical fitting on parameters in the preset parameter information, so that a temperature control curve of an electrode of the radio frequency beauty instrument in a preset period is obtained. Therefore, the fitting can be carried out again according to the feelings of different users, and the feelings of the users on the temperature change are matched, so that better user experience is achieved.
In one embodiment, referring to fig. 3, the temperature control curve has a temperature range from a first threshold T1 to a second threshold T2; the second threshold T2 is greater than the first threshold T1; the adjusting of the working parameters of the radio frequency beauty instrument in the (i+1) th control period according to the difference information may include the steps of:
step 301: determining reference power P of radio frequency cosmetic instrument 0 The method comprises the steps of carrying out a first treatment on the surface of the And (3) using a PID control method, taking the difference information as input of a PID controller, and calculating a compensation value delta P of the reference power.
Step 302: according to reference power P 0 And the compensation value delta P, and determining the radio frequency power P=P of the radio frequency cosmetic instrument in the (i+1) th control period 0+ ΔP。
In practical application, a PID control method is adopted, difference information between the target temperature and the real-time temperature of the electrode in the ith control period is used as input of a PID controller, and the radio frequency power of the radio frequency beauty instrument in the (i+1) th control period is calculated, so that the electrode temperature detected by the sensor always changes along a set temperature control curve. If the PID control method is not adopted, the same control effect can be achieved as long as the sensor temperature data is maintained to change according to a preset temperature control curve.
Step 303: referring to fig. 3, during the process that the real-time temperature of the control electrode increases from the first threshold T1 to the second threshold T2, the radio frequency of the control radio frequency cosmetic instrument decreases from the first frequency f1 to the second frequency f2.
Referring to fig. 3, the first threshold is T1 and the second threshold is T2; the first frequency f1 and the first threshold T1 are working parameters at the same moment (T1); the second frequency f2 and the second threshold T2 are operating parameters at the same time (T2).
The higher the radio frequency of the radio frequency signal, the weaker the penetration force in the skin; the lower the radio frequency of the radio frequency signal, the stronger the penetration force in the skin. In the embodiment of the disclosure, in the process that the real-time temperature of the control electrode is increased from the first threshold T1 to the second threshold T2, the radio frequency of the control radio frequency cosmetic instrument is reduced from the first frequency f1 to the second frequency f2. Therefore, the temperature rising rate of the human epidermis can be gradually reduced and the accuracy of temperature control can be improved in the process that the real-time temperature of the electrode is increased from the first threshold T1 to the second threshold T2.
In one embodiment, adjusting the operating parameter of the radio frequency cosmetic instrument in the i+1 control period according to the difference information may include the steps of:
step 401: and under the condition that the difference information indicates that the real-time temperature value is larger than the target temperature value, determining the refrigeration power of the radio frequency beauty instrument in the (i+1) th control period according to the difference information.
Step 402: in the (i+1) th control period, the semiconductor refrigerating sheet is controlled to refrigerate the electrode of the radio frequency beauty instrument according to the refrigerating power.
According to the temperature control method, the target temperature set on the temperature control curve can be dynamically tracked by controlling the real-time temperature of the electrode, the temperature of the electrode is controlled to be increased from 25 ℃ to 43 ℃ according to the temperature control curve, and the output of radio frequency energy is stopped when the temperature reaches 43 ℃, or the electrode is refrigerated. The skin temperature was controlled to be always in the range of 43 ℃. Thus, the skin temperature of the human body is in a safe temperature range, and high-temperature scalding of the skin is not caused.
In one embodiment, the temperature control curve has a temperature in the range of a first threshold to a second threshold; the second threshold is greater than the first threshold; the adjusting of the working parameters of the radio frequency beauty instrument in the (i+1) th control period according to the difference information may include the steps of:
step 501: and determining that the real-time temperature of the electrode is greater than or equal to the second threshold value in the ith control period.
Step 502: and controlling the semiconductor refrigerating sheet to refrigerate the electrode of the radio-frequency beauty instrument according to the preset refrigerating power, so that the temperature of the electrode is reduced to the first threshold value from the second threshold value. And under the condition that the temperature of the electrode reaches a first threshold value, controlling the temperature of the electrode to rise from the first threshold value to the second threshold value within a preset period according to the temperature control curve.
Referring to fig. 4, the target temperature value at the first moment is 25 ℃, the target temperature value at the second moment is 43 ℃, and the semiconductor refrigerating sheet is controlled to refrigerate the electrode of the radio frequency beauty instrument according to the preset refrigerating power when the real-time temperature of the electrode in the ith control period is more than or equal to 43 ℃ so that the temperature of the electrode is reduced to 25 ℃.
After the temperature of the electrode is reduced to 25 ℃, the temperature control method is continuously executed: acquiring a temperature control curve of an electrode of the radio frequency beauty instrument in a preset period, and acquiring a target temperature of the electrode in an ith control period according to the temperature control curve. Detecting the real-time temperature of the electrode in the ith control period, acquiring the difference information of the target temperature and the real-time temperature, and adjusting the working parameters of the radio frequency beauty instrument in the (i+1) th control period according to the difference information.
In one embodiment, the temperature control curve has a temperature in the range of a first threshold to a second threshold; the second threshold is greater than the first threshold; referring to fig. 5, the temperature control method provided by the embodiment of the present disclosure may further include the following steps:
step 601: determining that the real-time temperature of the electrode reaches a second threshold value in an ith control period; and determining the first radio frequency power of the electrode according to the heat radiation power of the electrode.
Step 602: in the (i+1) th control period, the real-time temperature of the electrode is controlled to be kept at a first threshold value according to the first radio frequency power of the electrode.
Referring to fig. 5, the first threshold is T1, the first rf power of the electrode is denoted as P1, and the heat dissipation power of the electrode is denoted as Ps, so that P1-ps=0. In the (i+1) th control period, the real-time temperature of the electrode is controlled to be kept at a first threshold value according to the first radio frequency power of the electrode, and then the temperature of the electrode is in a dynamic balance state.
In one embodiment, the temperature control curve has a temperature in the range of a first threshold to a second threshold; the second threshold is greater than the first threshold; referring to fig. 5, the temperature control method provided by the embodiment of the present disclosure may further include the following steps:
step 701: determining that the real-time temperature of the electrode reaches a second threshold value in an ith control period; and determining the second radio frequency power according to the heat radiation power of the electrode and the preset refrigeration power.
Step 702: during the i+1 control period, the real-time temperature of the electrode is controlled to be maintained at a first threshold value according to the second radio frequency power. The preset refrigeration power is used for controlling the semiconductor refrigeration sheet to refrigerate the electrode in the (i+1) th control period.
Referring to fig. 5, the first threshold is T1, the second rf power is denoted as P2, the heat dissipation power of the electrode is denoted as Ps, the preset cooling power is denoted as Pz, and P2- (ps+pz) =0. In the (i+1) th control period, the temperature of the electrode is in a dynamic balance state according to the real-time temperature of the second radio frequency power control electrode kept at the first threshold value.
In one embodiment, referring to fig. 6 and 7, the temperature control method provided in the embodiment of the present disclosure may further include the following steps:
step 801: and determining that the real-time temperature of the electrode reaches a second threshold T2, and closing the radio frequency power of the radio frequency beauty instrument.
Step 802: determining that the real-time temperature of the electrode is reduced from the second threshold T2 to a third threshold T3, and controlling the real-time temperature of the electrode to be increased from the third threshold T3 to the second threshold T2 according to the preset radio frequency power.
Referring to fig. 6 and 7, the first threshold is T1, the second threshold is T2, the third threshold is T3, and the third threshold T3 is greater than the first threshold T1. And determining that the real-time temperature of the electrode reaches a second threshold T2, and closing the radio frequency power of the radio frequency beauty instrument. The real-time temperature of the electrode will drop from the first threshold T2 to the third threshold T3. When the real-time temperature of the electrode reaches a third threshold T3, the real-time temperature of the electrode is controlled to rise from the third threshold T3 to a second threshold T2 according to the preset radio frequency power.
Referring to fig. 8, a temperature control system provided by an embodiment of the present disclosure includes: the device comprises a radio frequency circuit, an electrode driving circuit, a refrigerating circuit, a temperature sensor, a semiconductor refrigerating sheet and a micro control unit. The temperature sensor is used for detecting the real-time temperature of the electrode, transmitting the real-time temperature of the electrode to the micro-processing unit, and the micro-processing unit is used for executing the following data processing process:
acquiring a temperature control curve of an electrode of the radio frequency beauty instrument in a preset period, and acquiring a target temperature of the electrode in an ith control period according to the temperature control curve. Detecting the real-time temperature of the electrode in the ith control period, acquiring the difference information of the target temperature and the real-time temperature, and adjusting the working parameters of the radio frequency beauty instrument in the (i+1) th control period according to the difference information.
Referring to fig. 9, the present application provides a temperature control system, which can be applied to a radio frequency beauty instrument, and the system includes the following unit modules:
the acquisition module is used for acquiring a temperature control curve of an electrode of the radio frequency beauty instrument in a preset period, wherein the temperature control curve is a change curve of target temperature and radio frequency time of the electrode; acquiring a target temperature of the electrode in an ith control period according to a temperature control curve;
the processing module is used for detecting the real-time temperature of the electrode in the ith control period and acquiring the difference information of the target temperature and the real-time temperature; the i-th control period belongs to one of the preset periods;
and the control module is used for adjusting the working parameters of the radio frequency beauty instrument in the (i+1) th control period according to the difference information.
The above description of various embodiments is intended to emphasize the differences between the various embodiments, which may be the same or similar with reference to each other. The methods disclosed in the method embodiments provided by the application can be arbitrarily combined under the condition of no conflict to obtain a new method embodiment. The features disclosed in the embodiments of the products provided by the application can be arbitrarily combined under the condition of no conflict, so as to obtain new embodiments of the products. The features disclosed in the embodiments of the method or the apparatus provided in the application may be arbitrarily combined without conflict to obtain a new embodiment of the method or the apparatus.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are merely illustrative, and exemplary, the division of units is merely a logical function division, and there may be other manners of division in actual implementation, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to a device or unit, whether electrically, mechanically, or otherwise.
The units described above as separate components may or may not be physically separate, and components displayed as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of grid units; the object of the present embodiment can be achieved according to the fact that some or all of the units thereof can be selected.
The functional units in the embodiments of the present application may be all integrated in one processing module, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.
Those of ordinary skill in the art will appreciate that: all or part of the steps of implementing the above method embodiments may be implemented by hardware associated with program instructions, and the above program may be stored in a computer readable storage medium, which when executed, performs steps including the above method embodiments.
The foregoing is merely specific embodiments of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and all changes and substitutions are intended to be covered in the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A temperature control method based on load feedback, wherein the method is applied to a radio frequency beauty instrument, the method comprising:
acquiring a temperature control curve of an electrode of the radio frequency beauty instrument in a preset period, wherein the temperature control curve is a change curve of target temperature and radio frequency time of the electrode; acquiring a target temperature of the electrode in an ith control period according to the temperature control curve;
detecting the real-time temperature of the electrode in the ith control period, and acquiring the difference information of the target temperature and the real-time temperature; the ith control period belongs to one of the preset periods;
adjusting working parameters of the radio frequency beauty instrument in an (i+1) th control period according to the difference information; the operating parameters include at least one of: radio frequency power, radio frequency.
2. The method of claim 1, wherein the acquiring a temperature control profile of the electrode of the radio frequency cosmetic instrument for a preset period of time comprises:
acquiring preset parameter information, wherein the preset parameter information comprises a first threshold value and a second threshold value; the first threshold is a target temperature value at a first moment, and the second threshold is a target temperature value at a second moment;
performing numerical fitting on parameters in the preset parameter information by adopting a second-order curve to obtain a temperature control curve of an electrode of the radio frequency beauty instrument in a preset period;
the time range of the preset period is from the first moment to the second moment; the first threshold is less than the second threshold.
3. The method of claim 1, wherein the temperature control curve has a temperature in the range of a first threshold to a second threshold; the second threshold is greater than the first threshold;
the adjusting the working parameters of the radio frequency cosmetic instrument in the (i+1) th control period according to the difference information comprises the following steps:
taking the difference information as input of a PID controller, and calculating the radio frequency power of the radio frequency beauty instrument in the (i+1) th control period;
controlling the radio frequency of the radio frequency cosmetic instrument to decrease from a first frequency to a second frequency in the process of controlling the real-time temperature of the electrode to rise from the first threshold to the second threshold; the first frequency and the first threshold are working parameters at the same moment; the second frequency and the second threshold are control parameters at the same moment.
4. The method of claim 1, wherein adjusting the operating parameter of the radio frequency cosmetic instrument during the i+1 control period according to the difference information comprises:
under the condition that the difference information indicates that the real-time temperature value is larger than the target temperature value, determining the refrigeration power of the radio frequency beauty instrument in the (i+1) th control period according to the difference information;
and in the (i+1) th control period, controlling the semiconductor refrigeration sheet to refrigerate the electrode of the radio frequency beauty instrument according to the refrigeration power.
5. The method of claim 1, wherein the temperature control curve has a temperature in the range of a first threshold to a second threshold; the second threshold is greater than the first threshold; the adjusting the working parameters of the radio frequency cosmetic instrument in the (i+1) th control period according to the difference information comprises the following steps:
determining that the real-time temperature of the electrode is greater than or equal to the second threshold value in the ith control period;
and controlling a semiconductor refrigeration sheet to refrigerate an electrode of the radio frequency beauty instrument according to preset refrigeration power, so that the temperature of the electrode is reduced to the first threshold value from the second threshold value.
6. The method of claim 1, wherein the temperature control curve has a temperature in the range of a first threshold to a second threshold; the second threshold is greater than the first threshold; the method further comprises the steps of:
determining that the real-time temperature of the electrode reaches a second threshold during the ith control period; determining a first radio frequency power of the electrode according to the heat radiation power of the electrode;
and in the (i+1) th control period, controlling the real-time temperature of the electrode to be kept at the first threshold value according to the first radio frequency power of the electrode.
7. The method of claim 1, wherein the temperature control curve has a temperature in the range of a first threshold to a second threshold; the second threshold is greater than the first threshold; the method further comprises the steps of:
determining that the real-time temperature of the electrode reaches a second threshold during the ith control period; determining a second radio frequency power according to the heat radiation power of the electrode and a preset refrigeration power;
controlling the real-time temperature of the electrode to be kept at the first threshold according to the second radio frequency power in the (i+1) th control period;
the preset refrigeration power is used for controlling the semiconductor refrigeration sheet to refrigerate the electrode in the (i+1) th control period.
8. The method of claim 1, wherein the temperature control curve has a temperature in the range of a first threshold to a second threshold; the second threshold is greater than the first threshold; the method further comprises the steps of:
determining that the real-time temperature of the electrode reaches a second threshold value, and closing the radio frequency power of the radio frequency beauty instrument;
determining that the real-time temperature of the electrode is reduced from the second threshold value to a third threshold value, and controlling the real-time temperature of the electrode to be increased from the third threshold value to the second threshold value according to preset radio frequency power; the third threshold is greater than the first threshold.
9. A temperature control system based on load feedback, wherein the method is applied to a radio frequency cosmetic instrument, the system comprising:
the acquisition module is used for acquiring a temperature control curve of an electrode of the radio frequency beauty instrument in a preset period, wherein the temperature control curve is a change curve of target temperature and radio frequency time of the electrode; acquiring a target temperature of the electrode in an ith control period according to the temperature control curve;
the processing module is used for detecting the real-time temperature of the electrode in the ith control period and acquiring the difference information of the target temperature and the real-time temperature; the ith control period belongs to one of the preset periods;
the control module is used for adjusting working parameters of the radio frequency beauty instrument in the (i+1) th control period according to the difference information; the operating parameters include at least one of: radio frequency power, radio frequency.
10. A radio frequency cosmetic instrument, characterized in that it comprises: a memory and a processor; the memory is used for storing computer instructions; the processor is configured to perform the temperature control method of any one of the preceding claims 1 to 8.
CN202210727921.2A 2022-06-23 2022-06-23 Temperature control method and system based on load feedback and radio frequency beauty instrument Pending CN116196553A (en)

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CN202210727921.2A CN116196553A (en) 2022-06-23 2022-06-23 Temperature control method and system based on load feedback and radio frequency beauty instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210727921.2A CN116196553A (en) 2022-06-23 2022-06-23 Temperature control method and system based on load feedback and radio frequency beauty instrument

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