KR20200134168A - System for mask having massage function and method of operating the same - Google Patents

Abstract

The present invention relates to a mask system having a massage function and a method of operating the same. The mask system having a massage function according to the present invention includes: a mask including a massage unit having a massage function and a sensor for sensing a skin condition; a power supply part supplying power to the mask; and a control part for deriving a skin index from the sensing result of the sensor and controlling a driving method of the mask through the power supply part based on the derived skin index.

Description

[System for mask having massage function and method of operating the same]

The present invention relates to a mask system having a massage function and a method of operating the same.

The mask is applied to the user's face to manage the skin, and various functional materials can be used to enhance the effect.

Existing masks managed the skin by chemical actions such as moisturizing, but it was difficult for users to intuitively feel the effects of using masks because there was no physical action such as massage.

In particular, the existing mask did not have a separate function for the part where wrinkles occur on the face, and it was difficult for the user to feel that the skin condition of a specific part was improved.

Korean Patent Registration No. 10-1530165 (announced on June 18, 2015)

Accordingly, an object of the present invention is to provide a mask system having a massage function and a method of operating the same.

An object of the present invention is a mask system having a massage function, comprising: a mask including a massage unit having a massage function and a sensor for sensing a skin condition; A power supply for supplying power to the mask; It is achieved by including a control unit that derives a skin indicator from the sensing result from the sensor and controls a driving method of the mask through the power supply unit based on the derived skin indicator.

The sensor senses at least one of temperature, humidity, skin elasticity, skin electrical resistance, incident light, and an image, and the skin index includes at least one of moisture, oil, nutrition, elasticity, whitening and aging. do.

The skin indicator includes a degree of elasticity, and the sensor includes a deformation measurement sensor that measures the deformation of the skin, and the control unit derives the degree of elasticity from the deformation measured by the sensor, and the massage unit is applied to the skin during operation of the mask. The contact and separation are repeated, and the elasticity is measured from the deformation of the skin due to the contact between the massage unit and the skin.

The skin indicator includes an amount of oil and water, and the massage unit includes a pair of electrodes capable of contacting the skin, and the sensor includes a resistance sensor that measures a resistance value by the skin between the pair of electrodes. In addition, the control unit derives an oil-water content from the resistance value measured by the sensor, and a depth of penetration of the current generated from the electrode through the skin may be 10 to 20 μm.

The skin indicator includes a degree of aging, and the mask further includes an LED that irradiates light onto the user's skin, and the sensor includes a light receiving sensor of light emitted from the LED, and the control unit is in the light receiving sensor. The degree of aging can be determined from the light incident pattern.

The driving method of the mask may include at least one of a massage intensity, a massage time, a massage interval, and a massage temperature.

The mask may further include a cosmetic channel for supplying the cosmetic to the massage unit, and the operation method of the mask may further include at least one of a type, a supply amount, and a supply temperature of the cosmetic.

The mask further includes an LED that irradiates light to the user's skin, and the driving method of the mask may further include at least one of an irradiation time and an irradiation intensity of the LED.

Further comprising a display unit displayed to the user, the derivation of the skin index is performed at least one time during operation of the mask, and the control unit may display the skin index changed during operation of the mask on the display unit .

The massage unit includes a massage pad; The massage pad may include a pad driving unit to move in one direction while pressing the user's skin.

The massage pad may massage the skin from the center of the face to the periphery of the face.

An object of the present invention is a method of operating a mask system having a massage function, wherein the mask system includes a mask including a massage unit having a massage function and a sensor for sensing a skin condition, and using the sensor Sensing a state; Deriving a skin index from the sensed result; It may include the step of determining the driving method of the mask and performing the driving based on the derived skin index.

According to the present invention, a mask system having a massage function and a method of operating the same are provided.

1 shows a configuration of a mask system according to an embodiment of the present invention,
2 is a side view of a mask according to an embodiment of the present invention,
3 is a front view of a mask according to an embodiment of the present invention,
4 is a rear view of a mask according to an embodiment of the present invention,
5 is a perspective view of a massage unit according to an embodiment of the present invention,
6 is a cross-sectional view taken along VI-VI' of FIG. 5,
7 shows a cosmetic channel according to an embodiment of the present invention,
8A and 8B are for explaining a massage function of a massage system according to an embodiment of the present invention,
9 shows a massage direction in the mask system according to an embodiment of the present invention,
10 is a flow chart showing a method of operating a mask system according to an embodiment of the present invention,
11 and 12 show display contents of a display unit in a method of operating a mask system according to an embodiment of the present invention.
13 is for explaining the measurement of oil and water content,
14 is for explaining the measurement of the degree of aging.

The present invention will be described in more detail below with reference to the drawings.

The accompanying drawings are only an example illustrated to describe the technical idea of the present invention in more detail, and the spirit of the present invention is not limited to the accompanying drawings. In addition, in the accompanying drawings, sizes and intervals may be exaggerated differently from the actual in order to explain the relationship between each component.

A mask system according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 7.

1 shows the configuration of a mask system according to a first embodiment of the present invention, FIG. 2 is a side view of a mask according to a first embodiment of the present invention, and FIG. 3 is a mask according to the first embodiment of the present invention. Is a front view, Figure 4 is a rear view of the mask according to the first embodiment of the present invention, Figure 5 is a perspective view of the massage unit according to the first embodiment of the present invention, Figure 6 is VI-VI' of Figure 5 It is a cross-sectional view taken along the line, and Figure 7 shows a cosmetic channel according to the first embodiment of the present invention.

The mask system 1 includes a mask 10, a pump 20, a cosmetic container 30, a power supply unit 40, a control unit 50, and a display unit 60.

The mask 10 receives cosmetics from the cosmetic container 30 through the pump 20, and the power supply unit 40 supplies power to the mask 10 and the pump 40. The controller 50 receives and analyzes a sensing signal on the skin condition from the sensor 16 of the mask 10, and controls the power supply unit 40 according to the analysis result and user selection, etc. to turn on/off massage, massage intensity, massage time, Adjust the massage temperature, cosmetic supply time and/or cosmetic supply amount. In addition, the control unit 50 displays a sensing signal analysis result, a real-time analysis result, and recommended cosmetics on the display unit 60. Detailed operations of the control unit 50 and the display unit 60 will be described later.

The mask 10 includes a mask body 11, a fixing part 12, a cosmetic channel 13, a massage unit 14, an external connection part 15, a sensor 16, and a unit moving part 17.

The mask body 11 is provided thicker than a normal mask. The thickness of the mask body 11 is not limited thereto, but the thickest portion may be 0.5cm to 5cm, 0.5cm to 4cm, and 1cm to 3cm. The mask body 11 has openings 111 corresponding to the eyes, nose, and mouth.

In another embodiment, the mask body 11 may be formed of two layers, and in this case, a layer located inside may support the massage unit 14. In addition, a part of the mask body 11 may be empty.

The mask body 11 may be made of a plastic material or a silicon material, but is not limited thereto.

The fixing part 12 is connected to the side surface of the mask body 11 and serves to intimately fix the inner surface of the mask body 11 to the user. The fixing part 12 can be variously deformed as long as the inner surface of the mask body 11 can be tightly fixed to the user.

The cosmetic channel 13 is in communication with the external connection unit 15, and delivers the cosmetics supplied from the external connection unit 15 to each massage unit 14. The cosmetic channel 13 may comprise a tube.

The external connection part 15 is connected to the cosmetic container 30 through a pump 20 to supply the cosmetic product in the cosmetic container 30 to the cosmetic channel 13. The external connector 15 may be connected to the pump 20 to the cosmetic container 30 through a one-touch method or the like.

The massage unit 14 is provided in plural, but is not limited thereto, but may be disposed to correspond to the user's cheek, forehead, and chin. A receiving portion is formed in the mask body 11 to accommodate the massage unit 14.

The massage unit 14 includes a case 141, a massage pad 142, a pad driving part 143, an LED 145 and an LED support part 146.

The case 141 has a square box shape with an open top. The interior of the case 141 is connected to the cosmetic channel 13. The case 141 is not limited thereto, but may be made of plastic.

The massage pad 142 presses the skin to perform a massage. The massage pad 142 may directly contact the skin to perform a massage, or may perform a massage by placing a separate member such as a film between the skin and the massage pad 142.

The massage pad 142 may be made of a material having a soft but constant strength, but is not limited thereto, but may be made of a silicone rubber material. In addition, the massage pad 142 may be made of a transparent material. The massage pad 142 protrudes outward from the case 141, that is, toward the user's face.

Massage pads 142 are provided in the shape of a square plate, and five are used for each massage unit 14. In another embodiment, the massage pad 142 may have a circular shape, a polygonal shape other than a square, an oval shape, and the like, and a pattern such as a protrusion may be formed on the surface. In addition, the number of massage pads 142 per massage unit 14 may also vary.

The massage pad 142 moves in one direction in a caterpillar manner by the pad driving unit 143. Therefore, each massage pad 142 moves repeatedly in a position where the skin is pressed and a position where the skin is not pressed, and in a position where the skin is pressed, it moves only in a certain direction.

The pad driving unit 143 includes a roller 143a, a belt 143b, and a motor 143c. The rollers 143a are positioned at both ends of the belt 143b as a pair. One of the rollers 143a is rotated by the motor 143c. The motor 143c receives power from the power supply unit 40 through a power channel (not shown). The position and type of the motor 143c may be variously changed. A massage pad 142 is mounted on the belt 143b and moves the massage pad 142 in one direction while moving by the rotation of the roller 143a. The belt (143b) is provided in a string shape, but in another embodiment, the belt (143b) may be provided in a wide band shape.

A cosmetic supply unit 144 is positioned on an inner surface and a lower surface of one side of the case 141 connected to the cosmetic channel 13. The cosmetics supply unit 144 receives cosmetics from the outside through the cosmetics channel 13 and delivers the cosmetics to be supplied to the massage pad 142.

In this embodiment, the cosmetic supply unit 144 is made of a porous material, for example, foam. The foamed foam is not limited thereto, but may include a material of wet urethane, dry urethane, polyether, polyester, polyethylene, silicone, natural rubber, nitrile rubber, or polyvinyl alcohol, and a natural porous material may be used.

Cosmetics supplied through the cosmetic supply unit 144 may be cleansing agents, moisturizing agents, nutrients, and the like.

The LED support 146 is located in the space inside the belt 143b between the rollers 143a, and the LED 145 is mounted on the upper surface of the LED support 146. The LED 145 receives power from the power supply unit 40 through a power channel (not shown).

The LED 145 may increase the temperature by applying infrared rays or the like to the user's skin to improve the massage effect. Although not limited thereto, or, the LED 145 transmits light in the wavelength range of 600nm to 1400nm, which is known to be effective in removing wrinkles and treating acne, or light in the wavelength range of 1400nm to 3000nm, which is known to be effective in increasing immunity or stimulating collagen production. Can be added. In addition, it is possible to install LEDs 145 of different wavelengths and allow the user to select them as needed.

The installation position of the LED 145 may be variously changed, and may be installed on the mask body 11 separately from the massage unit 14.

The sensor 16 may sense temperature, humidity, skin elasticity, skin electrical resistance, incident light and/or an image. When sensing an image, the mask 10 may include a camera, and when sensing skin elasticity, the mask 10 may include a member for pressing the skin and measure the pressure of the skin applied to the pressing member.

Although the sensor 16 is shown to be located at four locations inside the mask 10, the location and number of the sensors 16 may vary in various ways. In addition, at least some of the sensors 16 may be installed on the massage unit 14. In addition, the sensors 16 may be provided in different types according to the measurement target.

The unit moving unit 17 moves the massage unit 14 so as to approach or separate the skin as shown in FIGS. 8A and 8B. Although not shown, the unit moving unit 17 may include a motor.

The cosmetic container 30 accommodates cosmetics and may have various forms. The cosmetic container 30 may be provided in plural that accommodates different cosmetics, and may be selected and used according to the needs of the user.

The power supply unit 40 may be provided in various forms. Although not limited thereto, power may be supplied by being connected to an external power source, a form of supplying power using a replaceable internal battery, or a form of supplying power using an internal battery connected to an external power source and rechargeable.

Although not shown above, the mask 10 further includes a power channel for supplying power from the power supply unit 40 to each massage unit 14. In addition, although not shown, the mask 10 may further include a temperature control means such as a heater capable of varying the temperature for each part of the face.

The connection between the control unit 50 and other components described above may be made wirelessly or wired, and the control unit 50 and the display unit 60 may be integrated portable devices.

In addition, an input unit for receiving a user's selection may be further included, and the user may input through the display unit 60 through a screen touch or the like.

The massage function of the mask system 1 described above will be described with reference to FIGS. 8A and 8B.

The user connects the cosmetic container 30 to the external connector 15 and wears and fixes the mask 10 on the face. After that, the cosmetic supply and the massage unit 14 start to operate through the control unit 50.

As shown in FIG. 8A, in a state in which the massage unit 14 and the skin are in close contact, the massage pad 142 moves in one direction in a caterpillar manner by the operation of the pad driving unit 143 of the massage unit 14 to massage the skin. . In this case, the massage direction may be a direction from the center of the face toward the periphery.

When the massage pad 142 passes between the rollers 143a, it is supported by contacting the LED support 146 to maintain a pressing force on the skin.

The LED 145 is also activated to irradiate the user's skin with infrared light to improve the massage effect. When the massage pad 142 is made of light transmission, the efficiency of the LED 145 is further improved.

Meanwhile, cosmetics supplied through the cosmetics channel 13 are stored in the cosmetics supply unit 144. Cosmetics stored in the cosmetic supply unit 144 are discharged from the cosmetic supply unit 144 and supplied to the massage pad 142 when the massage pad 142 rotates and comes into close contact with the cosmetic supply unit 144.

As a result, cosmetics are supplied to the surface of the massage pad 142, and when the massage pad 142 and the skin come into contact, the cosmetics are transferred back to the skin to perform a massage.

The massage using the massage unit 14 may be performed intermittently, and in particular, contact with the skin and separation may be performed as shown in FIG. 8B.

9 shows a massage direction in the mask system according to the first embodiment of the present invention.

The massage direction performed by each massage unit 14, that is, the movement direction of the massage pad 142 is a direction in which the massage pad 142 in contact with the skin moves from the center of the face to the periphery of the face. Thereby, the massage is performed in a way that wrinkles on the face are spread out.

According to the embodiment described above, since a physical massage can be received through the mask, the user's satisfaction is increased. If it is used while supplying cosmetics, the effect of using the existing mask can be obtained, and the effect of the LED light can also be obtained. In addition, if the massage pad 142 is disposed in a place where wrinkles are likely to occur on the face, the user can intuitively feel that wrinkles are improved.

The arrangement of the massage unit 14 may vary in various ways, and the size of the massage unit 14 may also vary depending on the location.

The mask system 1 according to the present embodiment may be operated to increase user convenience and increase the massage effect by using the sensor 16, the control unit 50, and the display unit 60.

Hereinafter, the operation of the mask system according to the present invention will be described with reference to FIGS. 10 to 12.

10 is a flowchart illustrating a method of operating a mask system according to an exemplary embodiment of the present invention, and FIGS. 11 and 12 are diagrams illustrating display contents of a display unit in a method of operating a mask system according to an exemplary embodiment of the present invention.

First, the sensor 16 senses skin conditions such as temperature, humidity, skin elasticity, skin electrical resistance, incident light and/or image at each location of the face (S100).

The controller 50 analyzes the sensing result to derive a skin index (S200). The skin index may be one or more of moisture, oil and moisture, nutrition, elasticity, whitening and aging.

For example, the degree of aging can be derived from the light-receiving pattern, skin elasticity, and the sensing result of the image, and wrinkle analysis (position, number, size) in the image can be performed. Image analysis may also include color analysis at each location of the skin. Also, the degree of aging can be derived through grasping wrinkles caused by light reflection.

The derived skin index may be transmitted to the user through the display unit 60.

Thereafter, the controller 50 performs a massage by operating the mask 10 based on the derived skin index (S300).

In another embodiment, the user may check the derived skin index and select an operation method of the mask 10. In another embodiment, the user may select a desired driving method and sensing item or input a skin condition before checking the skin indicator. When the user inputs a skin condition, the controller 50 operates the mask 10 by additionally reflecting the input skin condition.

Information about the operation plan of the mask 10, for example, the operation position, temperature, and operation time may be displayed through the display unit 60.

The operation method of the mask 10 includes the massage intensity (rotation speed) of the massage unit 14/massage time/massage interval/different operation by location/the degree of contact between the massage unit 14 and the skin (pressure level), LED ( 145) may be included in the on-off/irradiation time/different operation by location, quantity/temperature/type/supplying time of cosmetics and temperature control according to skin location.

For example, if the aging degree of the forehead part is severe compared to other parts, the control unit 50 may set the massage time of the massage unit 14 corresponding to the forehead longer than that of the other massage units 14.

Even when the mask 10 is operated, the sensor 16 is operated, and a change in skin index derived from the sensing result can be shown to the user in real time through the display unit 60. The sensor 16 is not limited thereto, but may sense the skin condition at regular intervals (eg, 5 seconds, 10 seconds, 1 minute, etc.). In addition, the sensor 16 is operated even after a certain period of time (eg, 5 seconds, 10 seconds or 30 seconds) after the operation of the mask 10 is terminated, so that skin changes after the massage may be measured.

In another embodiment, the operation method of the mask 10 may be changed in real time in consideration of the real-time sensing result and skin indicators derived therefrom.

In another embodiment, the operation of the mask 10 is intermittently performed, and the operation method may be changed in consideration of changes in skin indicators when the mask 10 is operated after stopping.

When the operation of the mask 10 is stopped, the improved skin indicator is displayed through the display unit 60 (S400).

In another embodiment, a cosmetic material suitable for the user's skin index may be presented. It can also tell you when to next massage or how to drive.

All of the operation of the mask 10 and skin indicators before and after the operation may be stored and analyzed.

The display method of the display unit 60 will be described in more detail.

11 and 12 show that the display unit 60 is implemented as a portable device, the present invention is not limited thereto.

11 shows the display of the basic operation.

Icons such as start, stop, warm-up, lifting, and washing are displayed on the screen, and the corresponding icons are activated when the operation is in progress. The activation method may vary, such as flashing. The warm-up is to ensure that there is no malfunction, and to apply the cosmetics to the massage unit 14 to a full extent, and is performed for a certain period of time (for example, 1 minute). When the mask 10 is being operated, the lifting icon is activated. The massage can be done in a continuous-stop-continuous manner. Cleaning may be performed by immersing the mask 10 in water.

12 shows the display of skin indicators.

The skin indicator display screen may appear automatically or by the user's selection on the basic motion display screen. In addition, it is possible to move from the skin indicator display screen to the basic motion display screen by the user's selection.

The skin indicator display screen consists of the main screen and each screen of moisturizing, nutrition, whitening, and aging, and displays changes in skin indicators through a 3D bar graph and a radial distribution map.

The skin indicator display may be provided to display the skin indicator changed in real time while the massage is being performed. In addition, it is also possible to show changes in skin indexes through multiple massages using data of the skin index changes before and after the massage and previously performed massages.

After the massage is finished, the result screen displays skin age, especially skin indicators that need improvement, and future massage schedules. Specifically, if it is judged as insufficient anti-aging, it is recommended to focus on aging in the future. If moisturizing (humidity) and whitening (color) are the focus targets in the future, they are presented together in the result, and related matters are indicated to the user when using later. Or, the change in rotational speed of the mask belt is presented at the same time as the key skin care items are presented later. For example, the belt rotation speed of the mask is classified into low, medium, and high speeds to deliver a suitable speed to the user.

Specifically, if it is judged that it is insufficient to improve aging, it is recommended to focus on aging management in the future. If moisturizing (humidity) and whitening (color) are the focus targets in the future, they are presented together in the result, and related matters are indicated to the user when using later. Or, the change in rotational speed of the mask belt is presented at the same time as the key skin care items are presented later. For example, the belt rotation speed of the mask is classified into low, medium, and high speeds to deliver a suitable speed to the user.

Hereinafter, the derivation of skin indicators will be described in more detail.

The elasticity can be derived by the skin deformation measured by the deformation measurement sensor. The deformation measurement sensor may be provided in the massage unit, but is not limited thereto. The deformation of the skin may be a change in the location of the skin in a state in which the skin is restored to its original state by being separated from the massage unit as shown in FIG. 8B after the skin is pressed by the massage unit as shown in FIG. 8A. In other words, the transformation of the skin may be the degree of recovery of the skin to its original state. The deformation measurement sensor may be a distance measurement sensor or a camera module using a laser or the like. In the case of a camera module, skin deformation can be identified through screen analysis.

In another embodiment, the deformation of the skin may be induced through a separate configuration other than the massage unit. In another embodiment, a sensor for measuring the repulsion force of the skin when the skin is pressed may be employed.

The amount of oil and water can be derived from the electrical resistance value of the skin measured by the resistance sensor. The massage unit includes a pair of electrodes as shown in FIG. 13, and sends a current through the skin by contacting the pair of electrodes with the skin. The skin shows a resistance value against electric current, and the amount of oil and moisture in the skin is measured from the resistance value. To this end, the control unit may be provided with a look-up table for the amount of resistance and oil.

The control unit may adjust a range of an appropriate amount of oil and water according to individual characteristics, seasons, and/or measurement locations (forehead, eye area, cheek, etc.). For example, even with the same amount of oil and water, it may be determined to be dry depending on the season or normal.

The depth through which the current is transmitted is 50% to 200%, 50 to 150%, or 80 to 120% of the thickness of the stratum corneum of the skin, and specifically, may be 10 to 20 μm.

The degree of aging can be derived from the incident pattern measured by the light-receiving sensor. As shown in FIG. 14, the incident pattern of light from the light source is changed by wrinkles. The light source can use the LED of the massage unit. In another embodiment, the degree of aging may be obtained by analyzing an image obtained by photographing with a camera.

Derivation of the above skin indicators can be measured several times-tens of times and an average value can be used. Alternatively, it may be measured and derived at regular time intervals, when the massage module contacts the skin or is spaced apart.

The above-described embodiments are examples for explaining the present invention, and the present invention is not limited thereto. Since those of ordinary skill in the art to which the present invention pertains will be able to implement the present invention by various modifications therefrom, the technical protection scope of the present invention should be determined by the appended claims.

Claims (12)

In the mask system with massage function,
A mask including a massage unit having a massage function and a sensor for sensing a skin condition;
A power supply for supplying power to the mask;
And a controller configured to derive a skin indicator from a sensing result from the sensor and control a driving method of the mask through the power supply unit based on the derived skin indicator. The method of claim 1,
The sensor senses at least one of temperature, humidity, skin elasticity, skin electrical resistance, incident light, and an image,
The skin indicator is a mask system including at least one of moisture, oil and moisture, nutrition, elasticity, whitening and aging. The method of claim 2,
The skin index includes elasticity,
The sensor includes a deformation measurement sensor that measures the deformation of the skin,
The control unit derives a degree of elasticity from the deformation measured by the sensor,
The massage unit is repeatedly contacted and separated from the skin during operation of the mask,
The elasticity is measured from the skin deformation caused by the contact between the massage unit and the skin. The method of claim 2,
The skin indicator includes the amount of oil and water,
The massage unit includes a pair of electrodes capable of contacting the skin,
The sensor includes a resistance sensor for measuring a resistance value by the skin between the pair of electrodes,
The control unit derives an oil-water content from the resistance value measured by the sensor,
A mask system having a penetration depth of 10 to 20 μm through the skin of the current generated by the electrode. The method of claim 2,
The skin indicator includes the degree of aging,
The mask further includes an LED that irradiates light to the user's skin,
The sensor includes a light-receiving sensor of light irradiated by the LED,
The control unit is a mask system to determine the degree of aging from the light incident pattern of the light receiving sensor. The method of claim 2,
The mask system includes at least one of a massage intensity, a massage time, a massage interval, and a massage temperature. The method of claim 6,
The mask further includes a cosmetic channel for supplying the cosmetic to the massage unit,
The mask system further includes at least one of a type, a supply amount, and a supply temperature of the cosmetic product. The method of claim 7,
The mask further includes an LED that irradiates light to the user's skin,
The mask system further includes at least one of an irradiation time and an irradiation intensity of the LED. The method of claim 1,
Further comprising a display unit displayed to the user,
Derivation of the skin indicator is performed at least once or more during the operation of the mask,
The control unit is on the display unit,
A mask system that displays the skin indicators that are changed during the operation of the mask. The method of claim 1,
The massage unit,
A massage pad;
A mask including a pad driving unit configured to move the massage pad in one direction while pressing the user's skin. In claim 10,
The massage pad is a mask, characterized in that for massaging the skin in a direction around the face from the center of the face. In the operating method of a mask system with a massage function,
The mask system,
Including a massage unit with a massage function and a mask including a sensor for sensing the skin condition,
Sensing a skin condition using the sensor;
Deriving a skin index from the sensed result;
And determining a driving method of the mask based on the derived skin index and performing driving.

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