CN114225219B - A home radio frequency beauty instrument self-starting system and home radio frequency beauty equipment - Google Patents

Abstract

The invention provides a home radio frequency beauty instrument self-starting system and home radio frequency beauty equipment, belonging to the technical field of beauty instrument control. It includes: an oscillation circuit, a detection unit and a control unit; the oscillation circuit is in contact with the detection object during operation; the detection unit is used to detect the frequency of the oscillation circuit, and calculate the capacitance value of the detection object according to the frequency of the oscillation circuit; the control unit is used to detect the object When the capacitance value of the face is greater than or equal to the minimum capacitance value of the face and less than or equal to the maximum capacitance value of the face, a control signal for controlling the radio frequency electrode to start the transmission mechanism is generated, and the control signal is sent to the radio frequency electrode. The capacitance value is used to determine whether the detection object is facial skin, which improves the accuracy of RF signal transmission of the home radio frequency beauty instrument, and does not require manual control of the radio frequency transmission mechanism, thereby improving the work efficiency of the home radio frequency beauty instrument.

Description

A home radio frequency beauty instrument self-starting system and home radio frequency beauty equipment

technical field

The invention relates to the technical field of control of beauty instruments, in particular to a self-starting system of a home radio frequency beauty instrument and a home radio frequency beauty device.

Background technique

The technical principle of the home radio frequency beauty instrument is to focus the radio frequency energy on the subcutaneous dermis by controlling the layout and emission parameters of the electrodes, so that the temperature of the collagen in the dermis is increased and denatured by heat, thereby stimulating collagen regeneration to achieve firming and lifting. cosmetic effect. In the field of home radiofrequency beauty technology, the temperature of the dermis needs to be between 45°C and 55°C to effectively stimulate collagen regeneration. 43°C to avoid burns.

At present, the vast majority of beauty instruments on the market are rechargeable beauty instruments, which have gradually replaced plug-in beauty instruments. In order to reduce the power consumption speed of the rechargeable beauty instrument and prolong the use time of a single charge, how to reduce the power consumption of the beauty instrument during use is an important issue. At present, there are mainly two starting mechanisms for radio frequency transmission, one is a button-type starting method, and the other is an inductive starting method.

The push-button start method is that before the user starts to use the beauty instrument, after manually pressing the on-off key, the main control chip is notified to start emitting radio-frequency energy through the radio-frequency electrode, which continues until the user manually presses the off-key after finishing the beauty treatment. The advantage of this method is that there is no response time after contacting the skin, and the temperature rises quickly.

The inductive startup method is to connect a circuit breakpoint on the probe of the beauty instrument. When a conductor contacts the probe of the beauty instrument, the breakpoint is connected, and the main control chip is notified to start emitting radio frequency energy through the radio frequency electrode; when the conductor is connected to the beauty instrument When the probe body is separated, the breakpoint is open and stops emitting energy. The advantage of this method is to reduce the no-load time and power consumption. The disadvantage is that the type of conductor connected to the breakpoint cannot be identified, and the emission mechanism is not accurate enough, whether it is body skin, facial skin, or other conductive materials, or even the user. When used in a high humidity environment, the radio frequency energy emission mechanism will be activated.

Based on the above problems, there is an urgent need for a new self-starting system for beauty instruments to solve the problems of large power consumption and inaccurate launch mechanism when no-loading.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a self-starting system of a home radio frequency beauty instrument and a home radio frequency beauty device, which can accurately identify the heating object, improve the accuracy of radio frequency emission, and reduce battery power consumption.

For achieving the above object, the present invention provides the following scheme:

A self-starting system for a home radio frequency beauty instrument, the home radio frequency beauty instrument includes a housing and a radio frequency electrode, and the home radio frequency beauty instrument self-starting system includes:

The oscillating circuit is arranged inside the housing of the household radio frequency beauty instrument, and is in contact with the detection object during operation;

a detection unit, arranged inside the housing of the household radio frequency beauty instrument, connected to the oscillation circuit, used for detecting the frequency of the oscillation circuit, and calculating the capacitance value of the detection object according to the frequency of the oscillation circuit;

The control unit is arranged inside the housing of the household radio frequency beauty instrument, and is respectively connected with the detection unit and the radio frequency electrode of the household radio frequency beauty instrument, and is used for detecting when the capacitance value of the object is greater than or equal to the minimum facial capacitance value and less than When it is equal to the maximum capacitance value of the face, generate a control signal for controlling the radio frequency electrode to start the transmission mechanism, and send the control signal to the radio frequency electrode, when the capacitance value of the detection object is smaller than the minimum capacitance value of the face or greater than the maximum face value When the capacitance value is detected, a warning signal is generated; the minimum capacitance value of the face and the maximum capacitance value of the face are predetermined capacitance values.

Optionally, the oscillation circuit is an LC oscillation circuit.

Optionally, the detection unit includes:

a frequency detection module, connected to the oscillation circuit, for detecting the frequency of the oscillation circuit;

a capacitance determination module, connected to the frequency detection module, for determining the capacitance value of the oscillation circuit according to the frequency of the oscillation circuit;

The calculation module is respectively connected with the capacitance determination module and the control unit, and is used for calculating the capacitance value of the detection object according to the capacitance value of the oscillation circuit.

Optionally, the capacitance determination module determines the capacitance value of the oscillation circuit according to the following formula:

Among them, f ₀ is the frequency of the oscillating circuit, L is the inductance value of the oscillating circuit, and C is the capacitance value of the oscillating circuit.

Optionally, the calculation module determines the capacitance value of the detection object according to the following formula:

Among them, C ₂ is the capacitance value of the detection object, C ₁ is the internal capacitance value of the oscillator circuit, and C is the capacitance value of the oscillator circuit.

Optionally, the control unit is further configured to determine the minimum facial capacitance value and the maximum facial capacitance value according to the following formula:

C _min = μ _min ×argmin {C ₂₁ , C ₂₂ , C ₂₃ };

C _max = μ _max ×argmax {C ₂₁ , C ₂₂ , C ₂₃ };

Among them, _Cmin is the minimum capacitance value of the face, _Cmax is the maximum capacitance value of the face, _μmin and _μmax are the correction coefficients of the oscillating circuit, _C21 is the capacitance value of the forehead skin, _C22 is the skin capacitance value of the cheek, and _C23 is the jaw skin capacitance value. Line skin capacitance value, argmin{} is the element with the smallest parameter value in a set of sequences, and argmax{} is the element with the largest parameter value in a set of sequences.

Optionally, the control unit is further configured to re-determine the minimum facial capacitance value and the maximum facial capacitance value at a set time interval.

For achieving the above object, the present invention also provides the following scheme:

A household radio frequency beauty equipment, the household radio frequency beauty equipment comprises a household radio frequency beauty instrument and the above-mentioned household radio frequency beauty instrument self-starting system; the household radio frequency beauty instrument self-starting system is arranged inside the household radio frequency beauty instrument shell , and connected with the radio frequency electrode of the household radio frequency beauty instrument.

According to the specific embodiment provided by the present invention, the present invention discloses the following technical effects: the frequency of the oscillation circuit is detected by the detection unit, and the capacitance value of the detection object is calculated according to the frequency of the oscillation circuit, and the capacitance value of the detection object is greater than or equal to the minimum facial capacitance When the value is less than or equal to the maximum capacitance value of the face, that is, when the detection object is identified as facial skin, the radio frequency electrode of the household radio frequency beauty instrument is controlled to start the transmission mechanism, and the radio frequency signal is transmitted to the facial skin, and the capacitance value is used to determine whether the detection object is facial skin. The accuracy of the radio frequency signal transmission of the home radio frequency beauty instrument is improved, and there is no need to manually control the radio frequency transmission mechanism, thereby improving the working efficiency of the home radio frequency beauty instrument.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative labor.

Fig. 1 is the module structure schematic diagram of the self-starting system of the household radio frequency beauty instrument of the present invention;

Fig. 2 is the use flow chart of the home radio frequency beauty equipment;

Figure 3 is a flow chart of capacitance measurement;

Figure 4 is a flow chart for setting the capacitance range of the facial skin.

Symbol Description:

Oscillation circuit-1, detection unit-2, frequency detection module-21, capacitance determination module-22, calculation module-23, control unit-3, radio frequency electrode-4.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The purpose of the present invention is to provide a self-starting system of a home radio frequency beauty instrument and a home radio frequency beauty device, the capacitance value of the detection object is calculated by the frequency of the oscillating circuit, and whether it is facial skin is judged according to the capacitance value, and when it is detected that the detection object is facial skin At the same time, it controls the radio frequency electrode of the home radio frequency beauty instrument to start the transmission mechanism, transmits radio frequency signals to the facial skin, and realizes self-starting through facial induction, which solves the problems of high power consumption and high mechanical wear when the home beauty instrument is empty, and improves the The accuracy of the radio frequency signal transmission of the home radio frequency beauty instrument, and the need to manually control the radio frequency transmission mechanism, improves the working efficiency of the home radio frequency beauty instrument.

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 1 , the self-starting system of the home radio frequency beauty instrument of the present invention includes an oscillation circuit 1 , a detection unit 2 and a control unit 3 .

Among them, the home radio frequency beauty instrument can use the existing radio frequency beauty instrument on the market, and the home radio frequency beauty instrument includes a housing, a probe and a radio frequency electrode 4 .

The oscillating circuit 1 is arranged inside the housing of the household radio frequency beauty instrument, and is in contact with the detection object during operation. In this embodiment, the oscillation circuit is an LC oscillation circuit. The LC oscillating circuit includes an internal capacitor, an inductor and a memory. Specifically, the LC oscillating circuit will be charged and discharged periodically, and the frequency of the circuit can be measured by recording the number of cycles during the charging and discharging process of the LC oscillating circuit.

The detection unit 2 is arranged inside the housing of the household radio frequency beauty instrument and is connected to the oscillation circuit 1 . The detection unit 2 is used to detect the frequency of the oscillation circuit 1 and calculate the frequency of the oscillation circuit 1 Describe the capacitance value of the detected object.

The control unit 3 is arranged inside the housing of the home radio frequency beauty instrument, and is connected to the detection unit 2 and the radio frequency electrode 4 of the home radio frequency beauty instrument respectively. When the capacitance value is greater than or equal to the minimum capacitance value of the face and less than or equal to the maximum capacitance value of the face, a control signal for controlling the radio frequency electrode 4 to start the transmission mechanism is generated, and the control signal is sent to the radio frequency electrode 4, where the detection object is When the capacitance value of the face is smaller than the minimum capacitance value of the face or greater than the maximum capacitance value of the face, a warning signal is generated. The minimum capacitance value of the face and the maximum capacitance value of the face are predetermined capacitance values.

On the basis of the inductive start-up technology, the present invention adds an oscillation circuit 1, which can accurately identify whether the detection object is facial skin, and effectively avoid the battery power consumption caused by the ineffective emission of radio frequency energy.

Specifically, the detection unit 2 includes: a frequency detection module 21 , a capacitance determination module 22 and a calculation module 23 .

The frequency detection module 21 is connected to the oscillation circuit 1 , and the frequency detection module 21 is used to detect the frequency of the oscillation circuit 1 .

The capacitance determination module 22 is connected to the frequency detection module 21, and the capacitance determination module 22 is configured to determine the capacitance value of the oscillation circuit 1 according to the frequency of the oscillation circuit 1.

Specifically, the capacitance value of the oscillation circuit is determined according to the following formula:

Among them, f ₀ is the frequency of the oscillating circuit, L is the inductance value of the oscillating circuit, and C is the capacitance value of the oscillating circuit. L is a preset fixed parameter.

The calculation module 23 is respectively connected to the capacitance determination module 22 and the control unit 3 , and the calculation module 23 is configured to calculate the capacitance value of the detection object according to the capacitance value of the oscillation circuit 1 .

Determine the capacitance value of the detection object according to the following formula:

Among them, C ₂ is the capacitance value of the detection object, C ₁ is the internal capacitance value of the oscillator circuit, and C is the capacitance value of the oscillator circuit.

Further, the control unit 3 is also used to determine the minimum capacitance value of the face and the maximum capacitance value of the face according to the following formula:

C _min = μ _min ×argmin {C ₂₁ , C ₂₂ , C ₂₃ };

C _max = μ _max ×argmax {C ₂₁ , C ₂₂ , C ₂₃ };

Among them, _Cmin is the minimum capacitance value of the face, _Cmax is the maximum capacitance value of the face, _μmin and _μmax are the correction coefficients of the oscillating circuit, _C21 is the capacitance value of the forehead skin, _C22 is the skin capacitance value of the cheek, and _C23 is the jaw skin capacitance value. Line skin capacitance value, argmin{} is the element with the smallest parameter value in a set of sequences, and argmax{} is the element with the largest parameter value in a set of sequences.

Because the capacitance value of the facial skin is related to the user's skin quality, current skin state, hydration, ambient temperature/humidity, season and other factors. Therefore, the facial skin capacitance is a variable amount that changes with time, location, and user status, so the facial skin capacitance interval (the minimum facial capacitance value and the maximum facial capacitance value) needs to be able to be reset.

In order to further improve the accuracy of the radio frequency signal transmission of the home radio frequency beauty instrument, the control unit 3 is also used to re-determine the minimum facial capacitance value and the maximum facial capacitance value according to the set time interval.

In addition, the present invention also provides a home radio frequency beauty device, the home radio frequency beauty device includes a home radio frequency beauty instrument and the above-mentioned home radio frequency beauty instrument self-starting system. The self-starting system of the household radio frequency beauty instrument is arranged inside the housing of the household radio frequency beauty instrument, and is connected to the radio frequency electrode 4 of the household radio frequency beauty instrument.

In order to better understand the solution of the present invention, further description is given below in conjunction with specific embodiments.

As shown in Figure 2, Figure 3 and Figure 4, the use process of the household radio frequency beauty equipment of the present invention is:

Step 1: Fully contact the test object with the probe of the home radio frequency beauty instrument.

Step 2: Measure the frequency of the oscillating circuit and record the current frequency f ₀ .

Step 3: Calculate the capacitance value C ₂ of the current detection object according to the internal capacitance value C ₁ of the oscillating circuit.

Step 4: As shown in Figure 4, repeat steps 1 to 3 on the forehead, cheeks, and jawline of the user's face, and record the facial skin capacitances of the forehead, cheeks, and jawline of the user's face as C ₂₁ , C respectively ₂₂ , _C23 .

Step 5: Calculate the facial skin capacitance interval [C _min , C _max ] according to the facial skin capacitance of the forehead, cheek and jawline, where C _min is the minimum facial capacitance value, and C _max is the maximum facial capacitance value.

Step 6: Store the facial skin capacitance interval in the memory of the oscillating circuit.

Step 7: When the user uses it again, the facial skin is fully contacted with the probe of the home radio frequency beauty instrument, and the oscillation circuit repeats steps 2 to 3 to calculate the current capacitance value C _x of the skin.

Step 8: Read the facial skin capacitance interval [C _min , C _max ] from the memory of the oscillating circuit, and determine whether the current value of the skin capacitance C _x belongs to the interval [C _min , C _max ]:

If it is, it is determined that the current detection object is the user's facial skin, and the radio frequency electrode is controlled to transmit radio frequency signals to the facial skin;

If not, it is determined that the current detection object is not the user's facial skin, and a radio frequency non-activation warning sound is generated, and the radio frequency transmission mechanism is not activated to maintain battery power.

Step 9: During the user's re-use, every time the probe of the home radio frequency beauty instrument moves one position, the oscillation frequency of the oscillation circuit changes once, and steps 7-8 are repeated.

Step 10: When the user touches the facial skin and the home radio frequency beauty instrument self-starting system emits a warning sound of radio frequency not starting, the user needs to start the oscillation circuit calibration, reset the facial skin capacitance range [C _min , C _max ], and then use the home radio frequency The beauty instrument automatically starts the system to ensure normal use.

The user's face includes multiple parts of the forehead, eyes, around the eyes, cheeks, nose, around the mouth, and the jawline. The composition and thickness of the subcutaneous tissue in each part are different, so the skin capacitance of each part is also different. The invention sets the facial skin capacitance range according to the action objects (forehead, cheek, jawline) of the household radio frequency beauty instrument and the normal variation range (correction coefficient) of the skin capacitance of each action object, and further improves the accuracy of facial skin determination.

Facial skin has a certain specificity in human skin. The number of sebaceous glands in facial skin is about 7 times that of body skin, resulting in different water content, oil output and hydration state of facial skin from body skin. In terms of electrical characteristics, the above difference reaction means that the capacitance of the facial skin is different from that of the skin of other parts. Therefore, the present invention judges whether it is facial skin through the capacitance value, and then decides whether to turn on the radio frequency electrode, thereby improving the working efficiency of the home radio frequency beauty instrument.

The self-starting system of the home radio frequency beauty instrument of the present invention does not emit radio frequency energy when the beauty instrument probe does not touch the skin, effectively reduces battery power consumption, is suitable for small home radio frequency beauty instruments, and reduces the cost of beauty.

In this paper, specific examples are used to illustrate the principles and implementations of the present invention. The descriptions of the above embodiments are only used to help understand the methods and core ideas of the present invention; meanwhile, for those skilled in the art, according to the present invention There will be changes in the specific implementation and application scope. In conclusion, the contents of this specification should not be construed as limiting the present invention.

Claims (8)

1. A domestic radio frequency beauty instrument self-starting system, domestic radio frequency beauty instrument includes casing and radio frequency electrode, characterized by that, domestic radio frequency beauty instrument self-starting system includes:

the oscillation circuit is arranged in the shell of the domestic radio frequency beauty instrument and is contacted with a detection object when in work;

the detection unit is arranged in the shell of the household radio frequency beauty instrument, is connected with the oscillating circuit and is used for detecting the frequency of the oscillating circuit and calculating the capacitance value of the detection object according to the frequency of the oscillating circuit;

the control unit is arranged in the shell of the household radio-frequency beauty instrument, is respectively connected with the detection unit and the radio-frequency electrode of the household radio-frequency beauty instrument, and is used for generating a control signal for controlling the radio-frequency electrode to start an emission mechanism when the capacitance value of the detected object is greater than or equal to the minimum capacitance value of the face and less than or equal to the maximum capacitance value of the face, sending the control signal to the radio-frequency electrode, and generating a warning signal when the capacitance value of the detected object is less than the minimum capacitance value of the face or greater than the maximum capacitance value of the face; the face minimum capacitance value and the face maximum capacitance value are predetermined capacitance values.

2. The self-starting system of the radio frequency beauty treatment instrument for home use of claim 1, characterized in that the oscillation circuit is an LC oscillation circuit.

3. The home radio frequency beauty treatment instrument self-starting system according to claim 1, wherein said detection unit comprises:

the frequency detection module is connected with the oscillating circuit and used for detecting the frequency of the oscillating circuit;

the capacitance determining module is connected with the frequency detecting module and used for determining the capacitance value of the oscillating circuit according to the frequency of the oscillating circuit;

and the calculation module is respectively connected with the capacitance determination module and the control unit and is used for calculating the capacitance value of the detection object according to the capacitance value of the oscillation circuit.

4. The self-starting system of the radio frequency beauty instrument for home use according to claim 3, wherein the capacitance determining module determines the capacitance value of the oscillating circuit according to the following formula:

wherein f is ₀ L is the inductance of the oscillating circuit, and C is the capacitance of the oscillating circuit.

5. The home radio frequency beauty instrument self-starting system according to claim 3, wherein said calculating module determines the capacitance value of the detected object according to the following formula:

wherein, C ₂ A capacitance value of a detection object, C ₁ The capacitance value is the internal capacitance value of the oscillation circuit, and C is the capacitance value of the oscillation circuit.

6. The self-starting system of the rf cosmetic home care instrument as claimed in claim 1, wherein the control unit is further configured to determine the minimum and maximum facial capacitance values according to the following formulas:

C _min ＝μ _min ×argmin{C ₂₁ ，C ₂₂ ，C ₂₃ }；

C _max ＝μ _max ×argmax{C ₂₁ ，C ₂₂ ，C ₂₃ }；

wherein, C _min Minimum capacitance value of face, C _max Maximum capacitance value of face, mu _min And mu _max As a correction factor of the oscillating circuit, C ₂₁ Is the forehead skin capacitance value, C ₂₂ Is the cheek skin capacitance value, C ₂₃ For jaw line skin capacitance, argmin { } is the element that accounts for the smallest parametric value in a set of sequences, and argmax { } is the element that accounts for the largest parametric value in a set of sequences.

7. The home radio frequency beauty instrument self-starting system according to claim 1, wherein said control unit is further configured to re-determine the face minimum capacitance value and the face maximum capacitance value at set time intervals.

8. A home radio frequency beauty treatment apparatus, characterized in that it comprises a home radio frequency beauty treatment instrument and a home radio frequency beauty treatment instrument self-starting system according to any one of claims 1-7; the household radio frequency beauty instrument self-starting system is arranged in the household radio frequency beauty instrument shell and is connected with a radio frequency electrode of the household radio frequency beauty instrument.

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