Ultrasonic beauty instrument based on multi-feedback automatic adjustment

Abstract

The utility model discloses an ultrasonic beauty instrument based on multi-feedback automatic adjustment. The ultrasonic beauty instrument comprises a transducer, a drive circuit, a single chip microcomputer, an alternating current impedance detection unit, a temperature detection unit and a voltage and current detection unit. The skin impedance is detected through the alternating current impedance detection unit, the output of the driving circuit is adjusted, and then the ultrasonic intensity of the transducer is adjusted; the skin surface temperature is detected through the temperature detection unit, when it is detected that the skin temperature reaches a threshold value, output of ultrasonic waves is stopped, and a user is protected from being scalded; an output ultrasonic signal is monitored in real time through the voltage and current detection unit to adjust the frequency of an ultrasonic excitation signal output by the driving circuit, so that the transducer works on a resonance point all the time, automatic frequency tracking is achieved, and the accuracy of the output ultrasonic power is improved. Therefore, frequency tracking is carried out through multiple feedback modes of voltage and current detection, temperature detection and alternating current impedance detection, and the ultrasonic output intensity is automatically adjusted, so that a better use effect is achieved, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of beauty instruments, in particular to an ultrasonic beauty instrument based on multi-feedback automatic regulation. Background Art

[0002] As people age, the skin and tissues inevitably enter the aging process. Micro-focused ultrasound is a new beauty anti-aging method. It uses a special ultrasonic transducer to converge ultrasonic energy at 1.5 mm - 4.5 mm under the skin, causing local heating and contraction of the subcutaneous tissue, and the collagen fibers gradually regenerate and rearrange to achieve the effects of lifting and tightening, increasing skin elasticity, and reducing wrinkles. However, most of the current ultrasonic beauty instruments on the market can only be manually adjusted in terms of gears, and improper operation by users may cause burns.

[0003] Based on this, a new solution is needed. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide an ultrasonic beauty instrument based on multi-feedback automatic regulation.

[0005] To achieve the above purpose, the utility model provides an ultrasonic beauty instrument based on multi-feedback automatic regulation, which includes a transducer, a driving circuit, a single-chip microcomputer, an AC impedance detection unit, a temperature detection unit, and a voltage and current detection unit. The driving circuit and the voltage and current detection unit are connected between the transducer and the single-chip microcomputer, and the AC impedance detection unit and the temperature detection unit are connected to the single-chip microcomputer. The single-chip microcomputer adjusts the output of the transducer through the driving circuit according to the detection results of the AC impedance detection unit, the temperature detection unit, and the voltage and current detection unit.

[0006] In the ultrasonic beauty instrument based on multi-feedback automatic regulation provided by the utility model, the driving circuit includes a DDS waveform generator, a power amplification circuit, an isolation circuit, and a boost circuit. The input end of the DDS waveform generator and the input end of the boost circuit are connected to the single-chip microcomputer. The output end of the DDS waveform generator is connected to the input end of the isolation circuit. The output end of the isolation circuit and the output end of the boost circuit are connected to the input end of the power amplification circuit. The output end of the power amplification circuit is connected to the input end of the transducer.

[0007] In the ultrasonic beauty instrument based on multi-feedback automatic regulation provided by the utility model, the driving circuit further includes an impedance matching circuit connected between the output end of the power amplification circuit and the input end of the transducer.

[0008] In the ultrasonic beauty instrument based on multi-feedback automatic regulation provided by the present utility model, a frequency tracking unit connected between the voltage and current detection unit and the single-chip microcomputer is further included.

[0009] In the ultrasonic beauty instrument based on multi-feedback automatic regulation provided by the present utility model, a human-computer interaction unit, a rechargeable battery and a Bluetooth module connected to the single-chip microcomputer are further included.

[0010] The ultrasonic beauty instrument based on multi-feedback automatic regulation provided by the present utility model has the following beneficial effects: The ultrasonic beauty instrument based on multi-feedback automatic regulation provided by the present utility model detects the skin impedance through an AC impedance detection unit, and then adjusts the output of the drive circuit according to the detected skin impedance, and further adjusts the ultrasonic intensity of the transducer, so as to realize that different skin impedances automatically correspond to different ultrasonic intensities; the skin surface temperature is detected through a temperature detection unit, and when the detected skin temperature reaches the threshold value, the output of the ultrasonic wave is stopped to protect the user from being scalded; the voltage and current detection unit is used to monitor the output ultrasonic signal in real time to adjust the frequency of the ultrasonic excitation signal output by the drive circuit, so that the transducer always works at the resonance point, realizing automatic frequency tracking and improving the accuracy of the output ultrasonic power; thus, through multiple feedback methods such as voltage and current detection, temperature detection, and AC impedance detection, frequency tracking is carried out and the ultrasonic output intensity is automatically adjusted, so as to achieve a better use effect and improve the user experience. Description of the Drawings

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings:

[0012] Figure 1 The schematic diagram of the ultrasonic beauty instrument based on multi-feedback automatic regulation provided by an embodiment of the present utility model is shown;

[0013] Figure 2 As shown Figure 1 The circuit diagram of the single-chip microcomputer and the Bluetooth module shown;

[0014] Figure 3 As shown Figure 1 The circuit diagram of the DDS waveform generator shown;

[0015] Figure 4 As shown Figure 1 The circuit diagram of the power amplification circuit and the impedance matching circuit shown;

[0016] Figure 5 As shownFigure 1 The circuit diagram of the AC impedance detection unit shown

[0017] Figure 6 As shown Figure 1 The circuit diagram of the temperature detection unit shown

[0018] Figure 7 As shown Figure 1 The circuit diagram of the voltage and current detection unit shown

[0019] Figure 8 As shown Figure 1 The circuit diagram of the frequency tracking unit shown Detailed implementation manners

[0020] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Typical embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present utility model is thorough and complete.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0022] The general idea of the present utility model is as follows: In order to solve the problem that the existing ultrasonic beauty instrument can only manually adjust the gear and is prone to cause burns, the present utility model provides an ultrasonic beauty instrument based on multi-feedback automatic adjustment. The skin impedance is detected by the AC impedance detection unit, and then the output of the drive circuit is adjusted according to the detected skin impedance, and further the ultrasonic intensity of the transducer is adjusted to realize that different skin impedances automatically correspond to different ultrasonic intensities; the skin surface temperature is detected by the temperature detection unit, and when the detected skin temperature reaches the threshold value, the output of the ultrasonic wave is stopped to protect the user from being scalded; the voltage and current detection unit monitors the output ultrasonic signal in real time to adjust the frequency of the ultrasonic excitation signal output by the drive circuit, so that the transducer always works at the resonance point, realizes automatic frequency tracking, and improves the accuracy of the output ultrasonic power.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the specification drawings and specific implementation manners. It should be understood that the embodiments of the present utility model and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. Without conflict, the technical features in the embodiments of the present utility model and the embodiments can be combined with each other.

[0024] Figure 1 The figure shows the schematic diagram of an ultrasonic beauty instrument based on multi-feedback automatic regulation provided by an embodiment of the present utility model. As Figure 1 shown, the ultrasonic beauty instrument based on multi-feedback automatic regulation includes a transducer 100, a driving circuit, a single-chip microcomputer 300, an AC impedance detection unit 400, a temperature detection unit 500, and a voltage and current detection unit 600. Among them, the driving circuit and the voltage and current detection unit 600 are connected between the transducer 100 and the single-chip microcomputer 300, and the AC impedance detection unit 400 and the temperature detection unit 500 are connected to the single-chip microcomputer 300. The single-chip microcomputer 300 adjusts the output of the transducer 100 through the driving circuit according to the detection results of the AC impedance detection unit 400, the temperature detection unit 500, and the voltage and current detection unit 600. Thus, by adopting multiple feedback methods such as voltage and current detection, temperature detection, and AC impedance detection for frequency tracking and automatically adjusting the ultrasonic output intensity of the transducer, better use effects can be achieved and the user experience can be improved.

[0025] Specifically, in an embodiment of the present utility model, the driving circuit is used to drive the transducer to output ultrasonic waves under the control of the single-chip microcomputer. As Figure 1 shown, the driving circuit includes a DDS waveform generator 210 (as Figure 3 shown), a power amplification circuit 220 (as Figure 4 shown), an isolation circuit 230, a boost circuit 240, and an impedance matching circuit 250 (as Figure 4 shown). Among them, the input end of the DDS waveform generator 210 and the input end of the boost circuit 240 are connected to the single-chip microcomputer 300, the output end of the DDS waveform generator 210 is connected to the input end of the isolation circuit 230, the output end of the isolation circuit 230 and the output end of the boost circuit 240 are connected to the input end of the power amplification circuit 220, the output end of the power amplification circuit 220 is connected to the input end of the impedance matching circuit 250, and the output end of the impedance matching circuit 250 is connected to the input end of the transducer 100. In the present utility model, the driving circuit generates the driving frequency required by the ultrasonic transducer by the DDS waveform generator, and then amplifies it to the required amplitude by the power amplification circuit. The boost circuit provides the required voltage for the power amplification module. The amplified driving waveform is transmitted to the transducer through the impedance matching circuit, thereby converting electrical energy into sound energy and sending it out. Since the impedance characteristic of the transducer is always capacitive, the overall circuit can be made to be a pure configuration through the impedance matching network, improving the electro-acoustic conversion efficiency.

[0026] Specifically, in an embodiment of the present utility model, different skin impedances correspond to different ultrasonic intensities. Therefore, through Figure 5The AC impedance detection unit 400 shown detects the skin impedance, and then the single-chip microcomputer adjusts the output of the drive circuit according to the detected skin impedance, and further adjusts the ultrasonic intensity of the transducer, so as to automatically correspond different skin impedances to different ultrasonic intensities. For example, when the impedance is low, the system reduces the boosting ratio of the boosting circuit to adjust the waveform amplitude of the drive circuit, thereby reducing the output focused ultrasound intensity.

[0027] Specifically, in an embodiment of the present invention, the focused ultrasound will cause a thermal effect on the skin. Therefore, the skin surface temperature is detected by a temperature detection unit as shown in Figure 6 . When it is detected that the skin temperature reaches the threshold value, the single-chip microcomputer controls the drive circuit to stop the output of the ultrasonic wave, which can protect the user from being scalded.

[0028] Specifically, in an embodiment of the present invention, the resonant frequency of the ultrasonic transducer will drift due to the external environment, temperature change and load change. Therefore, the voltage-current detection unit as shown in Figure 7 and the frequency tracking unit 610 as shown in Figure 8 are used to monitor the output ultrasonic signal in real time to adjust the frequency of the ultrasonic excitation signal output by the DDS waveform generator, so that the transducer always works at the resonant point, realizing automatic frequency tracking, improving the accuracy of the output ultrasonic power, and further enhancing the user experience.

[0029] Specifically, in an embodiment of the present invention, it further includes a human-computer interaction unit 700, a rechargeable battery 800 and a Bluetooth module 900 connected to the single-chip microcomputer 300. Among them, the human-computer interaction unit includes a display screen, buttons and a touch screen. Through the human-computer interaction unit, the state of the device can be displayed, working parameters can be set or operation guides can be provided, enabling the user to interact with and control the device intuitively. The rechargeable battery is used to provide power supply for the ultrasonic beauty instrument, enabling it to work independently of an external power source, increasing the portability and flexibility of the device, and allowing the user not to rely on a power socket when using it. The Bluetooth module is used for data transmission, remote control of the device or connection with an application program to realize more functions or enhance the user experience.

[0030] In the specification provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0031] Similarly, it should be understood that, for the purpose of streamlining the present disclosure and assisting in understanding one or more of the various utility model aspects, in the foregoing description of the exemplary embodiments of the present utility model, the various features of the present utility model are sometimes grouped together into a single embodiment, figure, or description thereof. However, the disclosed method should not be construed as reflecting an intention that the claimed present utility model requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, the utility model aspects lie in less than all the features of the single embodiments disclosed previously. Thus, the claims following the detailed description are hereby expressly incorporated into the detailed description, where each claim itself serves as a separate embodiment of the present utility model.

[0032] In addition, those skilled in the art will appreciate that, although some of the embodiments herein include certain features included in other embodiments but not others, the combination of features of different embodiments is meant to be within the scope of the present utility model and forms different embodiments. For example, in the following claims, any one of the claimed embodiments can be used in any combination.

[0033] It should be noted that the above embodiments illustrate the present utility model rather than limit the present utility model, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in the claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present utility model can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In a unit claim listing several devices, several of these devices can be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not denote any order. These words can be interpreted as names.

Claims

1. An ultrasonic beauty instrument based on multi-feedback automatic adjustment, characterized in that: The invention comprises a transducer (100), a driving circuit, a single chip microcomputer (300), an alternating current impedance detection unit (400), a temperature detection unit (500) and a voltage and current detection unit (600), wherein the driving circuit and the voltage and current detection unit (600) are connected between the transducer (100) and the single chip microcomputer (300), the alternating current impedance detection unit (400) and the temperature detection unit (500) are connected to the single chip microcomputer (300), and the single chip microcomputer (300) adjusts the output of the transducer (100) through the driving circuit according to the detection results of the alternating current impedance detection unit (400), the temperature detection unit (500) and the voltage and current detection unit (600).

2. The ultrasonic beauty instrument based on multi-feedback automatic adjustment as claimed in claim 1, characterized in that: The driving circuit comprises a DDS waveform generator (210), a power amplifier circuit (220), an isolation circuit (230) and a boost circuit (240); the input end of the DDS waveform generator (210) and the input end of the boost circuit (240) are connected to the single-chip computer (300); the output end of the DDS waveform generator (210) is connected to the input end of the isolation circuit (230); the output end of the isolation circuit (230) and the output end of the boost circuit (240) are connected to the input end of the power amplifier circuit (220); and the output end of the power amplifier circuit (220) is connected to the input end of the transducer (100).

3. The ultrasonic beauty instrument based on multi-feedback automatic adjustment as claimed in claim 2, characterized in that: The driving circuit further comprises an impedance matching circuit (250) connected between the output end of the power amplifier circuit (220) and the input end of the transducer (100).

4. The ultrasonic beauty instrument based on multi-feedback automatic adjustment as claimed in claim 1, characterized in that: It also includes a frequency tracking unit (610) connected between the voltage and current detection unit (600) and the single chip computer (300).

5. The ultrasonic beauty instrument based on multi-feedback automatic adjustment as claimed in claim 1, characterized in that: It also includes a human-computer interaction unit (700), a rechargeable battery (800) and a Bluetooth module (900) connected to the single-chip computer (300).

Images