CN114504373A - Novel radio frequency conversion beauty instrument - Google Patents
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 18
- 230000003796 beauty Effects 0.000 title claims abstract description 14
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- 238000010438 heat treatment Methods 0.000 claims abstract description 9
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- 210000004304 subcutaneous tissue Anatomy 0.000 claims abstract description 9
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- 102000008186 Collagen Human genes 0.000 claims description 6
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- 229920001436 collagen Polymers 0.000 claims description 6
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Abstract
本发明公开了一种新型射频变频美容仪，动态调节射频工作频率来控制皮肤表面的电场能量分布，以达到控制皮下组织加热体积的目的。通过建模仿真发现，随着频率的增加(从200kHz到10MHz)皮肤表面电位从射频电极或平板的中心到边缘逐渐减小，皮下组织顶部和底部吸收的功率差随频率增大而增大，皮下组织体积的中心和外围吸收的能量之间的差异也随频率增大而增大。简单来讲，根据不同的动态控制参数，动态调整射频美容仪电极射频频率，以达到更均匀的控制射频能量分布，本发明可有效提高射频美容仪的可控加热体积性能，射频变频美容仪包括：射频变频控制器，射频发生器，信号检测反馈回路。在不同的动态射频变频模式下，检测一种或多种输入参数(包括但不限于温度、图像、电阻、电导、皮脂率、皮肤含水率、表皮细胞形态、射频电极间电压和电流等)来动态调节射频频率。
The invention discloses a novel radio frequency frequency conversion beauty instrument, which dynamically adjusts the radio frequency working frequency to control the electric field energy distribution on the skin surface, so as to achieve the purpose of controlling the heating volume of the subcutaneous tissue. Through modeling and simulation, it is found that with the increase of frequency (from 200kHz to 10MHz), the skin surface potential gradually decreases from the center to the edge of the RF electrode or plate, and the difference in power absorbed by the top and bottom of the subcutaneous tissue increases with increasing frequency. The difference between the energy absorbed by the center and the periphery of the subcutaneous tissue volume also increases with frequency. To put it simply, according to different dynamic control parameters, the radio frequency frequency of the electrodes of the radio frequency beauty instrument is dynamically adjusted to achieve a more uniform control of the radio frequency energy distribution. The present invention can effectively improve the controllable heating volume performance of the radio frequency beauty instrument. The radio frequency conversion beauty instrument includes: : RF frequency conversion controller, RF generator, signal detection feedback loop. In different dynamic RF frequency conversion modes, one or more input parameters (including but not limited to temperature, image, resistance, conductance, sebum rate, skin moisture content, epidermal cell morphology, voltage and current between RF electrodes, etc.) are detected to Dynamically adjust the RF frequency.
Description
技术领域technical field
本发明涉及皮肤，皮下组织加热紧致仪器技术领域。The invention relates to the technical field of skin and subcutaneous tissue heating and firming instruments.
背景技术Background technique
射频(Radio Frequency，RF)电流的频率表征了电流每秒改变其方向的次数，以赫兹表示。这种方向的变化与电压极性的变化有关。直流电的频率为0赫兹，通常用于电池供电的设备中。大多数家用电器都使用50-60赫兹的标准交流电。交流电流会刺激神经和肌肉，在高功率下非常危险。它可以引起急性疼痛，肌肉痉挛，甚至心脏骤停。当频率为100KHz或更高时，肌肉和神经的刺激作用减弱。在这个范围内，可以将较高的功率安全地应用于组织，以产生所需的热效应。频率范围在200KHz至10MHz是医学上最常见的。而更高频率的RF主要用于通信。The frequency of a radio frequency (RF) current characterizes the number of times the current changes its direction per second, expressed in Hertz. This change in direction is related to a change in voltage polarity. Direct current has a frequency of 0 Hz and is commonly used in battery powered devices. Most household appliances use standard alternating current at 50-60 Hz. AC current can stimulate nerves and muscles and is very dangerous at high power. It can cause acute pain, muscle spasms, and even cardiac arrest. When the frequency is 100KHz or higher, the stimulation of muscles and nerves is weakened. Within this range, higher power can be safely applied to the tissue to produce the desired thermal effect. The frequency range from 200KHz to 10MHz is the most common in medicine. And higher frequency RF is mainly used for communication.
射频治疗仪的工作原理：当射频能量被应用于皮肤时，它会产生组织温度的可控上升。射频电流所传递的高能量会导致靶区胶原(胶原蛋白是一种结构蛋白，负责皮肤的弹性、强度)的热损伤并重塑。新的胶原蛋白会让皮肤更光滑，更光滑，看起来更年轻。How RF Therapy Works: When RF energy is applied to the skin, it produces a controlled rise in tissue temperature. The high energy delivered by the RF current causes thermal damage and remodeling of the target collagen (collagen is a structural protein responsible for skin elasticity and strength). The new collagen results in smoother, smoother, younger-looking skin.
射频能量控制实际上是改变从电极顶端流向与之接触的组织的电流。在直流中，电子的流动是单向的，而在交替电流中，电子的流动方向在一定的频率上来回循环。在生物组织中，射频器件的热效应取决于皮肤组织的电学性质。在射频器件中，交流电流从电极流向与之接触的组织。当电流进入组织时，组织中的离子会沿着电流方向的高频变化，并导致组织中产生热量。皮肤组织产生的热量取决于阻抗、电流强度的平方和皮肤暴露于RF能量的时间长度。RF energy control actually changes the current flow from the tip of the electrode to the tissue it contacts. In direct current, the flow of electrons is unidirectional, while in alternating current, the direction of flow of electrons cycles back and forth at a certain frequency. In biological tissue, the thermal effect of RF devices depends on the electrical properties of the skin tissue. In radio frequency devices, alternating current flows from the electrodes to the tissue in contact with them. When current enters tissue, ions in the tissue undergo high-frequency changes in the direction of the current and cause heat to be generated in the tissue. The heat generated by the skin tissue depends on the impedance, the square of the current intensity and the length of time the skin is exposed to RF energy.
中国专利CN 105944230 A公开了一种脉冲射频，正弦波射频电源放电。该发明属于传统射频仪通过脉冲占空比调节输出功率的范畴。Chinese patent CN 105944230 A discloses a pulsed radio frequency, sine wave radio frequency power discharge. The invention belongs to the category of the traditional radio frequency instrument adjusting the output power through the pulse duty cycle.
中国专利CN 106178278 A公开了一种使用正弦波射频技术，该发明属于传统射频仪通过控制输出电流和输出功率的范畴。Chinese patent CN 106178278 A discloses a sine wave radio frequency technology, which belongs to the category of traditional radio frequency instruments by controlling output current and output power.
中国专利CN 110840553 A公开了一种射频美容仪算法逻辑可调AI能量装置及控制方法，该发明属于传统射频仪通过控制输出电流，输出功率和能量的范畴。中国专利CN109173068 A公开了一种恒定电流输出系统、射频美容仪及恒定电流输出方法，应用于射频美容仪，包括：电流检测单元用于实时检测稳流输出单元的输出电流值，并将输出电流值发送至控制单元；控制单元用于接收电流检测单元发送的输出电流值，将输出电流值与预设电流阈值进行对比，并根据对比结果实时调节输出的PWM矩形波的占空比，以使稳流输出单元根据PWM矩形波的控制输出恒定电流。该发明属于传统射频仪通过控制输出电流，输出功率的范畴。Chinese patent CN 110840553 A discloses a radio frequency beauty instrument algorithm logic adjustable AI energy device and control method, the invention belongs to the category of traditional radio frequency instrument by controlling output current, output power and energy. Chinese patent CN109173068 A discloses a constant current output system, a radio frequency beauty instrument and a constant current output method, which are applied to a radio frequency beauty instrument, including: a current detection unit is used to detect the output current value of the constant current output unit in real time, and output the current The value is sent to the control unit; the control unit is used to receive the output current value sent by the current detection unit, compare the output current value with the preset current threshold, and adjust the duty cycle of the output PWM rectangular wave in real time according to the comparison result, so that the The constant current output unit outputs a constant current according to the control of the PWM rectangular wave. The invention belongs to the category of the traditional radio frequency instrument controlling the output current and output power.
CN 105380710 A、CN 103691067 A、CN 110893263 A、CN 108578896 A、CN107510883 A属于外观结构的创新。CN 105380710 A, CN 103691067 A, CN 110893263 A, CN 108578896 A, CN107510883 A belong to the innovation of appearance structure.
显然传统的射频治疗仪由于其电极的几何形状已经固定，在某一输送功率的情况下，其电场能量分部是固定的，在相同输送时间和皮肤表面温度的情况下，期望的加热体积和分布无法控制，而射频能量的分布和体积决定了治疗效果，从而很难保证对不同人群都有很好的使用效果。Obviously, due to the fixed geometry of its electrodes, the traditional radio frequency therapy device has a fixed electric field energy fraction under a certain delivery power. Under the same delivery time and skin surface temperature, the desired heating volume and The distribution cannot be controlled, and the distribution and volume of radio frequency energy determine the therapeutic effect, so it is difficult to ensure that it has a good effect on different groups of people.
发明内容SUMMARY OF THE INVENTION
为了解决传统的射频仪电极大小固定，某一功率下，电场分布不可控的问题。通过建模仿真发现，随着频率的增加(从200kHz到10MHz)皮肤表面电位从射频电极或平板的中心到边缘逐渐减小，皮下组织顶部和底部吸收的功率差随频率增大而增大，皮下组织体积的中心和外围吸收的能量之间的差异也随频率增大而增大，如图2(双电极加热热点随频率增加变化)所示。本发明提出一种新型射频变频美容仪，根据不同的动态控制参数，动态调整射频美容仪电极射频电流频率，以达到更均匀的控制射频能量分布，本发明可有效提高射频美容仪的可控加热体积性能，新型射频变频美容仪包括：射频变频控制器，射频发生器，信号检测反馈回路，在不同的动态射频变频模式下，检测一种或多种输入参数包括(温度、图像、电阻、电导、皮脂率、皮肤含水率、表皮细胞形态、射频电极间电压和电流)动态调节射频频率。In order to solve the problem that the electrode size of the traditional radio frequency instrument is fixed and the electric field distribution is uncontrollable under a certain power. Through modeling and simulation, it is found that with the increase of frequency (from 200kHz to 10MHz), the skin surface potential gradually decreases from the center to the edge of the RF electrode or plate, and the difference in power absorbed by the top and bottom of the subcutaneous tissue increases with increasing frequency. The difference between the energy absorbed at the center and the periphery of the subcutaneous tissue volume also increased with increasing frequency, as shown in Figure 2 (two-electrode heating hot spot as a function of increasing frequency). The present invention proposes a new type of radio frequency frequency conversion beauty instrument. According to different dynamic control parameters, the radio frequency current frequency of the electrodes of the radio frequency beauty instrument is dynamically adjusted to achieve a more uniform control of the radio frequency energy distribution. The present invention can effectively improve the controllable heating of the radio frequency beauty instrument. Volume performance, the new RF frequency conversion beauty instrument includes: RF frequency conversion controller, RF generator, signal detection feedback loop, in different dynamic RF frequency conversion modes, detection of one or more input parameters including (temperature, image, resistance, conductance) , sebum rate, skin moisture content, epidermal cell morphology, voltage and current between RF electrodes) dynamically adjust the RF frequency.
附图说明Description of drawings
为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本发明的某些实施例，因此不应被看作是对范围的限定。In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not should be seen as a limitation of scope.
图1射频变频控制流程图Figure 1 RF frequency conversion control flow chart
图2双电极加热热点随频率增加变化图Figure 2. The change of the hot spot of double-electrode heating with the increase of frequency
图3差分放大电路Figure 3 Differential amplifier circuit
图4电场分布和频率变化的关系以及电场强度和皮下组织深度的变化关系Fig. 4 The relationship between electric field distribution and frequency change, and the relationship between electric field intensity and subcutaneous tissue depth
具体实施方式Detailed ways
实施方案1：Embodiment 1:
温度控制动态变频模式，温度传感器读取间隔为0.1s，射频仪器初始温度为T0，射频初始频率为f0，当温度升高为Tn，新频率f’＝f0*(T0/Tn)。新的频率与皮肤组织温度成反比，当温度升高，射频发射频率动态降低。In the temperature control dynamic frequency conversion mode, the temperature sensor reading interval is 0.1s, the initial temperature of the radio frequency instrument is T0, the initial frequency of the radio frequency is f0, when the temperature rises to Tn, the new frequency f'=f0*(T0/Tn). The new frequency is inversely proportional to the temperature of the skin tissue, and as the temperature increases, the frequency of the RF emission dynamically decreases.
实施方案2：Implementation 2:
电极通过电桥的作用，将电阻信号转换成电压信号输出。由于电压信号幅值很小，需要对信号进行放大处理。在放大电路的选择上，选择差分放大器以效地抑制干扰信号(比如温度漂移)，获得稳定的信号输出，Rx为组织表面电阻。The electrode converts the resistance signal into a voltage signal for output through the action of the bridge. Due to the small amplitude of the voltage signal, it is necessary to amplify the signal. In the selection of the amplifier circuit, the differential amplifier is selected to effectively suppress the interference signal (such as temperature drift) to obtain a stable signal output, and Rx is the tissue surface resistance.
如图3所示：As shown in Figure 3:
根据温度传感器的温度变化deltaT，求得温度修正系数(组织的电导率是温度的函数。组织阻抗随温度变化的定性行为(Duck FA：physical Properties ofTissue.London，Academic Press，1990)。加热组织会以每摄氏度1.5-2％的速率降低其阻抗，直至凝固点)：According to the temperature change deltaT of the temperature sensor, the temperature correction coefficient (the electrical conductivity of the tissue is a function of temperature. Qualitative behavior of tissue impedance with temperature change (Duck FA: physical Properties of Tissue. London, Academic Press, 1990). Heating tissue will Decrease its impedance at a rate of 1.5-2% per degree Celsius until freezing point):
Cf＝deltaT*(1.5％～2％)Cf=deltaT*(1.5%～2%)
初始设定频率为F0，初始组织电阻为Rx0，下一测量时刻当组织电阻变化为Rx1时，可得电导变化系数：The initial set frequency is F0, the initial tissue resistance is Rx0, and when the tissue resistance changes to Rx1 at the next measurement moment, the conductance variation coefficient can be obtained:
Coeff＝Rx1*(1+Cf)/Rx0Coeff=Rx1*(1+Cf)/Rx0
根据的电场分布数据库可以求出分段的辐射深度修正系数ratio1，ratioN(如图4所示：电场分布和频率变化的关系以及电场强度和皮下组织深度的变化关系数据库，实例中N＝5)，已知上一时刻的输出频率值，可查表得到深度修正系数According to the electric field distribution database, the segmented radiation depth correction coefficient ratio1, ratioN can be obtained (as shown in Figure 4: the relationship between the electric field distribution and the frequency change and the change relationship database between the electric field intensity and the subcutaneous tissue depth, N=5 in the example) , the output frequency value of the previous moment is known, and the depth correction coefficient can be obtained by looking up the table
Cr＝ratio(Tn-1)(Tn-1：上一时刻)Cr=ratio(Tn-1) (Tn-1: last moment)
可得此时新输出频率F1＝F0/Coeff*CrThe new output frequency F1=F0/Coeff*Cr can be obtained at this time
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principles of the present invention, several improvements and modifications can be made. These improvements and modifications It should also be regarded as the protection scope of the present invention.
Claims (11)
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| CN115154922A (en) * | 2022-07-07 | 2022-10-11 | 深圳拓邦股份有限公司 | Beauty instrument control method and device and beauty instrument |
| CN117482388A (en) * | 2023-12-29 | 2024-02-02 | 深圳市宗匠科技有限公司 | Conductivity adjusting method, beauty instrument, storage medium and electronic equipment |
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