Cosmetic device with contact detection sensor and method for controlling same

Abstract

A cosmetic procedure apparatus is disclosed. A cosmetic treatment device according to one aspect of the present invention is a cosmetic treatment device for performing a cosmetic treatment on the skin of a user, comprising: a body having a contact surface capable of being in contact with the skin of the user; a stimulus applying part provided inside the body so as to apply a stimulus to the skin of the user in a state in which the contact surface is in contact with the skin of the user; a contact detection unit including a contact detection sensor provided on the contact surface; and a controller that determines whether or not the contact detection sensor is in contact with the skin of the user, and controls the stimulus applying portion such that the stimulus applying portion operates only in a state in which the contact detection sensor is in contact with the skin of the user.

Description

Technical Field

[0001] The present invention relates to a beauty treatment device and a control method thereof, and more particularly to a beauty treatment device having a contact detection sensor capable of detecting whether a body of the beauty treatment device contacts the skin of a user undergoing beauty treatment and a control method thereof. Background Art

[0002] In recent years, the popularity of home-based beauty treatment devices, which allow users to perform beauty treatments such as massage and hair removal at home, has been increasing. These devices allow users to easily and conveniently perform beauty treatments at their own convenience, lowering the barrier to entry and increasing accessibility.

[0003] As the popularity of home-use cosmetic devices increases, their performance has significantly improved, and the effectiveness of treatments is also increasing. This means that if users mishandle the devices or fail to use them safely and correctly, the likelihood and severity of side effects may also increase.

[0004] Specifically, as an example, home beauty treatment equipment uses lasers, high frequencies, etc. for hair removal, massage, etc. When high frequencies are applied to the skin for beauty and treatment, the high-frequency electrodes need to be accurately and tightly attached to the skin to achieve the appropriate treatment effect and generate deep heat therapy at the same time.

[0005] However, if high frequency is applied when the contact area with the skin is reduced due to changes in the contact angle or pressure between the cosmetic procedure device and the skin, or due to skin curvature, the current density increases, resulting in a risk of burns.

[0006] Therefore, as the performance and effectiveness of home beauty treatment devices improve, in order to prevent risks caused by improper or unintended use of the product, it is necessary to stimulate the skin only when the contact surface of the beauty treatment device body contacts the skin. Summary of the Invention

[0007] Technical problem to be solved by the invention

[0008] The present invention aims to solve the above-mentioned problems, and an object of the present invention is to provide a beauty treatment device and a control method thereof, which can operate a stimulation applying part only when the body of the beauty treatment device is in contact with the skin.

[0009] Another object of the present invention is to provide a beauty treatment device and a control method thereof, which can accurately determine whether the body of the beauty treatment device is in close contact with the skin.

[0010] Another object of the present invention is to provide a beauty treatment device and a control method thereof, which enables a stimulation applying portion to apply stimulation to the skin only when the body of the beauty treatment device is in contact with the skin, thereby allowing the user to use it safely.

[0011] Another object of the present invention is to provide a beauty treatment device and a control method thereof, which, when the beauty treatment device stimulates the skin by generating high frequency, does not cause the skin to be closely attached to the contact surface of the skin beauty device, thereby reducing the possibility of burns.

[0012] The technical problems of the present invention are not limited to the problems described above. Through the following description, ordinary technicians in the field to which the present invention belongs can clearly understand other problems not mentioned.

[0013] Solutions for solving technical problems

[0014] According to one aspect of the present invention, a beauty treatment device having a contact detection sensor is provided, wherein the beauty treatment device is a beauty treatment device for performing beauty treatment on the user's skin, and the beauty treatment device comprises: a main body having a contact surface capable of contacting the user's skin; a stimulation applying part arranged inside the main body so as to apply stimulation to the user's skin when the contact surface contacts the user's skin; a contact detection part comprising a contact detection sensor arranged on the contact surface; and a controller for judging whether the contact detection sensor contacts the user's skin and controlling the stimulation applying part so that the stimulation applying part only works when the contact detection sensor contacts the user's skin.

[0015] At this time, the stimulation applied by the stimulation applying unit to the user's skin may be provided by a high-frequency electrode or light irradiated onto the skin.

[0016] At this time, the contact surface is formed into any one of a circular, elliptical, and polygonal shape, and the stimulation applied by the stimulation applying part is formed in a manner of being applied toward the user's skin at a position inside or around the contact surface, and the contact detection sensor can be arranged at other positions around the contact surface.

[0017] In this case, the contact detection sensor may include at least one pair of contact detection members arranged around the contact surface.

[0018] In this case, the contact detecting members may be arranged at equal intervals along the periphery of the contact surface.

[0019] At this time, the contact detection part may include: a capacitor, which is electrically connected to the contact detection member and provided in a manner such that the electrostatic capacitance changes depending on whether it contacts the skin; a voltage supply module, which supplies a specified rectangular wave voltage to the capacitor; and an analog-to-digital converter, which is used to measure the electrostatic capacitance of the capacitor.

[0020] At this time, the contact detection member may include: a first contact detection member and a second contact detection member separated from each other, wherein the capacitor is electrically connected to the voltage supply module and connected to the first contact detection member, and when the first contact detection member and the second contact detection member are both in contact with the user's skin, the capacitor can be connected to the ground in parallel.

[0021] At this time, a switching element for turning on and off the rectangular wave voltage supplied by the voltage supply module may be included.

[0022] At this time, in the controller, when the electrostatic capacitance according to the prescribed rectangular wave voltage supplied by the voltage supply module is determined to be a specific value, it can be determined as non-contact, and when it is determined not to be the specific value, it can be determined as contact.

[0023] At this time, in the controller, a first time period signal is provided to the stimulation applying part, and the first time period signal is used by the stimulation applying part to apply stimulation. A second time period signal is provided to the voltage supply module, and the second time period signal is used by the voltage supply module to supply the rectangular wave voltage. The first time period signal and the second time period signal can be provided periodically and alternately.

[0024] According to another aspect of the present invention, a control method for a beauty treatment device having a contact detection sensor is provided, wherein the beauty treatment device includes a stimulation applying part and a contact detection sensor, wherein the stimulation applying part applies stimulation to the user's skin by contacting the user's skin, and the contact detection sensor includes an electrostatic capacitance sensor to detect whether the user's skin is contacted. The method includes: a step of first determining whether the body of the beauty treatment device is in contact with the skin; a step of applying stimulation to the skin by the stimulation applying part within a first time period when the body is in contact with the skin; a step of providing a rectangular wave voltage to measure the electrostatic capacitance of the electrostatic capacitance sensor of the contact detection part within a second time period after the first time period has passed; and a step of second determining whether the body is in contact with the skin.

[0025] At this time, in the step of determining whether the main body of the beauty treatment device is in contact with the skin, when the electrostatic capacitance of the electrostatic capacitance sensor corresponds to a specific value corresponding to the output value of the rectangular wave voltage, it can be determined that the main body is not in contact with the skin, and when the electrostatic capacitance of the electrostatic capacitance sensor does not correspond to the specific value, it is determined that the main body is in contact with the skin.

[0026] At this time, after repeatedly performing the steps of applying stimulation to the skin within the first time period and providing a rectangular wave voltage to measure the electrostatic capacitance of the electrostatic capacitance sensor of the contact detection part within the second time period, the step of determining whether the body is in contact with the skin for the second time can be performed.

[0027] Effects of the Invention

[0028] According to the configuration, the beauty treatment device according to one embodiment of the present invention can confirm whether the contact surface of the skin beauty device is in close contact with the skin by providing the contact detection member of the contact detection portion on the skin contact surface of the body of the skin beauty device.

[0029] According to one embodiment of the present invention, the beauty treatment device is configured to apply stimulation to the skin only when the contact surface of the beauty treatment device is in close contact with the skin, so that the beauty treatment device will not be closely attached to the skin, thereby preventing possible burns or unpredictable accidents in advance, so that the user can use the skin beauty device safely.

[0030] In addition, according to an embodiment of the present invention, when the skin beauty device is used for the first time, when the contact detection part first determines whether it contacts the skin and drives the stimulation application part, the stimulation application part and the contact detection part are operated alternately, so that even if the skin beauty device is separated from the skin during the operation of the stimulation application part, the contact detection part can confirm the non-contact state for the second time, thereby allowing the skin beauty device to interrupt the operation of the stimulation application part when it is separated from the skin, thereby allowing the user to use the skin beauty device safely.

[0031] It should be understood that the effects of the present invention are not limited to the effects described above, and include all effects that can be inferred from the constitution of the invention described in the detailed description of the present invention or the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a perspective view of a skin care device according to an embodiment of the present invention as viewed from above.

[0033] Figure 2 This is a perspective view of a skin care device according to an embodiment of the present invention as viewed from below.

[0034] Figure 3 is a schematic structural diagram of a skin care device according to an embodiment of the present invention.

[0035] Figure 4 Part (a) is a graph showing a case where the electrostatic capacitance of the voltage supplied by the voltage supply module corresponds to a specific value and is judged as not in contact with the skin in the skin care device according to one embodiment of the present invention. Figure 4 Part (b) is a graph showing a case where, in the skin care device according to one embodiment of the present invention, it is determined that the skin has been touched because the electrostatic capacitance of the voltage supplied by the voltage supply module does not correspond to a specific value.

[0036] Figure 5 Part (a) is a graph showing a time period during which stimulation is applied by the stimulation applying portion in the skin care device according to one embodiment of the present invention. Figure 5 Part (b) is a graph showing a time period during which the voltage supply module supplies the contact detection voltage.

[0037] Figure 6 is a flowchart illustrating a method for controlling a skin care device according to an embodiment of the present invention.

[0038] Description of Reference Numerals

[0039] 100: Beauty treatment equipment

[0040] 110: Ontology

[0041] 120: Contact detection unit

[0042] 132: First contact detection member

[0043] 134: Second contact detection member

[0044] 144: Capacitor

[0045] 150: Voltage supply module

[0046] 160: Analog-to-digital converter

[0047] 170: Controller

[0048] 180: Stimulation application unit DETAILED DESCRIPTION

[0049] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. The present invention can be implemented in various forms and is not limited to the embodiments described herein. To clearly illustrate the present invention, portions not relevant to the description are omitted from the accompanying drawings, and the same reference numerals are used throughout the specification to designate the same or similar components.

[0050] The words and terms used in this specification and claims are not limited to the usual or dictionary meanings, but should be interpreted as meanings and concepts that are consistent with the technical ideas of the present invention based on the principle that inventors can define terms and concepts to explain their own inventions in the best way.

[0051] Therefore, the embodiments described in this specification and the structure shown in the accompanying drawings are only a preferred embodiment of the present invention and do not represent all the technical ideas of the present invention. Therefore, the structure can be replaced by various equivalent alternatives and modifications at the time of application of the present invention.

[0052] It should be understood that in this specification, terms such as "including" or "having" are intended to illustrate the existence of the features, numbers, steps, actions, constituent elements, parts or their combinations recorded herein, without excluding in advance the existence or additional possibilities of one or more other features or numbers, steps, actions, constituent elements, parts or their combinations.

[0053] Unless otherwise specified, a component being “located in front of,” “behind,” “above,” or “below” another component includes not only being directly in contact with the other component but also being positioned between the other component. Furthermore, unless otherwise specified, a component being “connected to” another component includes not only being directly connected but also being indirectly connected.

[0054] Hereinafter, a beauty treatment device having a contact detection sensor according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0055] Figure 1 FIG. 1 is a perspective view of a skin care device according to an embodiment of the present invention as viewed from above. Figure 2 FIG. 1 is a perspective view of a skin care device according to an embodiment of the present invention as viewed from below.

[0056] Reference Figure 1 and Figure 2 The beauty treatment device 100 with a contact detection sensor according to one embodiment of the present invention is a beauty treatment device that allows a user to perform beauty treatment on their own skin. Alternatively, the user can use the beauty treatment device to perform beauty treatment on a patient.

[0057] For example, according to one embodiment of the present invention, the beauty treatment device 100 can use the stimulation application part provided in the beauty treatment device to provide a suction function, and the suction function is to suck the skin of the user or the person being treated into the side of the beauty treatment device and stimulate it, or use a high-frequency electrode to provide massage to the skin, or can apply stimulation such as laser hair removal.

[0058] The body 110 may be equipped with components for cosmetic procedures. For example, electrodes for high-frequency stimulation, lasers, or a light source for irradiation (not shown) may be provided on the body 110. Furthermore, the body 110 may also be equipped with components for providing a suction function (not shown), which stimulates the user's skin by applying suction.

[0059] Reference Figure 1 A handle portion 112 may be provided on the upper side of the body 110 so that the user can hold and move the beauty treatment device 100 .

[0060] In addition, refer to Figure 1 According to one embodiment of the present invention, the beauty treatment device 100 may include an operation button 103 for receiving operation information to turn the beauty treatment device 100 on and off, select various modes, etc. This is merely exemplary, and a touch screen or the like may be provided on the body surface in place of the operation button 103.

[0061] On the other hand, the cosmetic treatment device 100 according to one embodiment of the present invention may include an output unit 104 for outputting signals, messages, etc. In this case, the output unit 104 may be a speaker for outputting sound or voice. Alternatively, the output unit 104 may be a display for displaying visual information.

[0062] In addition, a display unit 105 for displaying the movement direction of the skin care device can be provided around the body. The display unit 105 can be provided as a blinking optical element to display the movement direction of the skin care device, and the user can operate the skin care device through the display of such an optical element.

[0063] On the other hand, according to one embodiment of the present invention, the body 110 of the beauty treatment device is provided with a contact surface 112 at its lower portion that can contact a predetermined area of ​​the user's skin.

[0064] In this embodiment, the contact surface 112 at the bottom of the body of the cosmetic treatment device is formed into a circular shape. At this time, the contact surface 112 is the area that comes into close contact with the skin. In this embodiment, it is shown as a circle, but in addition to a circle, it can also be formed into various shapes such as an ellipse, a quadrilateral, or a polygon.

[0065] On the other hand, a suction space (S / A) may be provided within the contact surface 112 to allow skin to be drawn in when the beauty treatment device performs a suction function, and a component (not shown) may be provided within the body to allow skin to be drawn in through the suction space. The detailed configuration for performing the suction function of the beauty treatment device is well known, and therefore a detailed description thereof will be omitted.

[0066] Alternatively, a plurality of high-frequency electrodes 182 may be disposed around the contact surface 112, thereby enabling the cosmetic treatment device to apply high-frequency stimulation to the skin. The high-frequency electrodes described above allow high-frequency current to flow while the contact surface of the cosmetic treatment device is in close contact with the skin, thereby applying stimulation to the skin.

[0067] The detailed configuration for applying stimulation to cause high-frequency current to flow in the skin is a well-known configuration, so in this specification, with respect to the configuration of the stimulation applying part for providing high-frequency stimulation, the description related to the contact detection part according to an embodiment of the present invention will be focused on, and the detailed description of the well-known configuration will be omitted.

[0068] On the other hand, according to one embodiment of the present invention, contact detection members 132, 134 (contact detection members 132, 134 are part of the contact detection sensor) are exposed on the contact surface 112. The contact detection members 132, 134 can be formed to have a circular protrusion protruding from the contact surface. The contact detection members 132, 134 can be separated from the electrodes protruding from the contact surface for applying high-frequency stimulation.

[0069] At this time, refer to Figure 2 The contact detecting members 132 and 134 may be composed of a pair of a first contact detecting member 132 and a second contact detecting member 134 .

[0070] Furthermore, a plurality of pairs of contact detection members may be provided on the contact surface 112 .

[0071] According to one embodiment of the present invention, Figure 2 As shown, the two first contact detecting members 132 and the two second contact detecting members 134 may be arranged to be spaced apart from each other at a 90-degree interval.

[0072] Thus, the cosmetic treatment device having the contact detection sensor according to one embodiment of the present invention can be configured such that the stimulation applying section operates only when both pairs of contact detection members provided on the contact surface are in contact with the skin.

[0073] Hereinafter, the detailed configuration and operation of the beauty treatment device 100 having a contact detection sensor will be described with reference to other drawings.

[0074] Figure 3 is a schematic structural diagram of a skin care device according to an embodiment of the present invention. Figure 4 Part (a) is a graph showing a case where the electrostatic capacitance of the voltage supplied by the voltage supply module corresponds to a specific value and is judged as not in contact with the skin in the skin care device according to one embodiment of the present invention. Figure 4 Part (b) is a graph showing a case where, in the skin care device according to one embodiment of the present invention, it is determined that the skin has been touched because the electrostatic capacitance of the voltage supplied by the voltage supply module does not correspond to a specific value. Figure 5 Part (a) is a graph showing a time period during which stimulation is applied by the stimulation applying portion of the skin care device according to one embodiment of the present invention. Figure 5 Part (b) is a graph showing a time period during which the voltage supply module supplies the contact detection voltage.

[0075] Reference Figure 3 According to an embodiment of the present invention, a beauty treatment device 100 having a contact detection sensor includes a stimulation applying portion 180, a contact detection portion 120, and a controller 170 inside a body 110 provided with a contact surface 112. Figure 1 and Figure 2 The main body 110 and the stimulation applying part 180 have been described, and the contact detecting part 120 and the controller 170 will be described in detail below.

[0076] Reference Figure 3 In one embodiment of the present invention, the contact detection unit 120 includes a contact detection sensor 130 , a capacitor 144 , a voltage supply module 150 , and an analog-to-digital converter 160 .

[0077] As mentioned above, the contact detection sensor 130 includes a first contact detection member 132 and a second contact detection member 134 provided on the contact surface. Figure 3 In order to simplify the drawing, only one pair of contact detecting members 132 and 134 is shown; however, a plurality of pairs of contact detecting members may be provided.

[0078] like Figure 2 As shown, the first contact detection member 132 and the second contact detection member 134 may be formed of a conductive member, one side of which has a protrusion protruding from the contact surface and the other side of which extends toward the inside of the body.

[0079] The contact sensor 130 is connected to the capacitor 144 so that the capacitance of the capacitor 144 changes depending on whether the skin comes into contact with the contact sensor 130 .

[0080] More specifically, refer to Figure 2 and Figure 3The first contact detection member 132 has a protrusion on one side thereof protruding to the outside on the contact surface, and the other side thereof located inside the main body is grounded to the ground electrode. That is, the first contact detection member 132 forms the ground electrode.

[0081] On the other hand, the second contact detection member 134 is spaced 90 degrees from the first contact detection member 132 on the contact surface and is formed of a conductive member. One side of the second contact detection member 134 has a protrusion protruding from the contact surface and the other side extends into the body.

[0082] The second contact detecting member 134 is electrically connected to the voltage supply module 150. The voltage supply module may be a microprocessor unit (MPU).

[0083] At this time, a switching element 152 is provided between the second contact detecting member 134 and the voltage supply module 150 so that voltage supply can be achieved according to the opening and closing of the switching element 152 .

[0084] The other side of the second contact detecting member 134 is electrically connected to one side of the capacitor 144. At this time, the other side of the capacitor 144 is grounded to the ground electrode.

[0085] Furthermore, the other side of the second contact detecting member 134 is electrically connected to the analog-to-digital converter 160 so as to convert an analog signal corresponding to a change in the electrostatic capacity of the capacitor into a digital signal.

[0086] In one embodiment of the present invention, the contact detection unit can be implemented by an electrostatic capacitive sensor (Capacitive Sensor). It can be simply constructed using the well-known capacitive voltage divider (CVD) method to detect contact, and detect the contact state of the skin through the change of electrostatic capacitance, and read the value through an analog-to-digital converter, thereby simply detecting whether there is contact.

[0087] At this time, according to one embodiment of the present invention, Figure 4 As shown, the voltage supply module 150 supplies a rectangular wave voltage of, for example, 5V.

[0088] If the first contact detection member 132 and the second contact detection member 134 do not contact the skin, the first contact detection member 132 and the second contact detection member 134 are not electrically connected, so the initial voltage supplied by the voltage supply module 150, that is, a voltage of 5V, is applied to the capacitor 144, and the electrostatic capacitance corresponding to the initial voltage can be detected by the analog-to-digital converter.

[0089] Thus, when it is determined that a voltage of 5 V is applied to the capacitor 144 and the electrostatic capacitance corresponding thereto is detected, the controller can determine that the state of not contacting the skin is maintained.

[0090] At this time, the voltage applied to the capacitor 144 may be the same as the initial voltage supplied by the voltage supply module, but may also be different therefrom and vary depending on the internal resistance of the components inside the main body.

[0091] On the other hand, even if the first contact detection member 132 and the second contact detection member 134 slightly touch the skin, the first contact detection member 132 and the second contact detection member 134 are mutually energized, so that the current flows through the user's skin, and the user's skin is electrically connected to the capacitor in parallel. As a result, the electrostatic capacitance of the capacitor 144 is different from the electrostatic capacitance of the initial capacitor 144.

[0092] More specifically, depending on the state in which the first contact detection member 132 and the second contact detection member 134 contact the skin, the amount of charge flowing between the first contact detection member 132 and the second contact detection member 134 grounded to the ground electrode changes, and the electrostatic capacitance of the capacitor 144 changes according to the amount of charge flowing.

[0093] For example, when the amount of current flowing between the first contact detection member 132 and the second contact detection member 134 is at a maximum value, as shown in FIG. Figure 4 As shown in part (b), the voltage applied to the capacitor 144 is approximately 2.5 V, and the corresponding electrostatic capacitance can be detected by the analog-to-digital converter. At this time, the controller can determine that the skin treatment device is in contact with the skin.

[0094] At this time, Figure 4 Part (a) and Figure 4 In part (b), Ta refers to the time when the voltage is applied by the voltage supply module 150, and Tb refers to the time when the electrostatic capacitance is measured according to the time delay.

[0095] At this time, the amount of current flowing between the first contact detection member 132 and the second contact detection member 134 may vary according to the skin condition, such as a state of heavy sweating, dry skin, or wet skin.

[0096] Therefore, according to one embodiment of the present invention, the first contact detection member 132 and the second contact detection member 134 will detect the electrostatic capacitance value of the capacitor 144 according to the initial voltage supplied by the initial voltage supply module when they are completely separated from the skin. However, even when the first contact detection member 132 and the second contact detection member 134 slightly contact the skin and become energized with each other, it can be determined that the electrostatic capacitance of the capacitor 144 has changed.

[0097] Therefore, according to one embodiment of the present invention, the contact detection unit 120 provided in the beauty treatment device 100 can be used to distinguish between a state where the beauty treatment device 100 is not in contact with the skin and a state where the beauty treatment device 100 is in contact with the skin and is powered on.

[0098] On the other hand, according to one embodiment of the present invention, the contact detection unit 120 including the capacitor 144 , the voltage supply module 150 , the switch element 152 , and the analog-to-digital converter 160 is connected to the controller 170 inside the body.

[0099] The controller 170 is electrically connected to the stimulation applying section 180 so as to control the operation of the stimulation applying section 180 based on the electrostatic capacitance of the capacitor 144 detected by the contact detecting section 120 .

[0100] Reference Figure 5 As for the controller 170 of the skin treatment device according to an embodiment of the present invention, when the stimulation applied by the stimulation applying part 180 is a high-frequency current, high-frequency stimulation can be imparted in the time period 0 to t1 (first time period), the time period t2 to t3 (third time period), and the time period t4 to t5 (fifth time period), and a voltage can be imparted to the contact detection part 120 in the time period t1 to t2 (second time period), t3 to t4 (fourth time period), and t5 to t6 (sixth time period).

[0101] As described above, by alternating the time for applying stimulation to the stimulation applying part 180 and the time for supplying voltage to the contact detection part 120, if skin contact does not occur during the application of stimulation to the stimulation applying part 180, stimulation may no longer be applied to the stimulation applying part 180 after skin contact does not occur.

[0102] At this time, the time for applying stimulation to the stimulation applying unit 180 and the time for supplying voltage to the contact detecting unit 120 can be changed according to the settings. For example, the time for applying stimulation to the stimulation applying unit 180 can be set to 0.9 seconds, and the time for supplying voltage to the contact detecting unit 120 can be set to 0.1 seconds.

[0103] As described above, when the beauty treatment device 100 is separated from the skin, stimulation by the stimulation applying part 180 can be prevented from being applied to the skin, thereby improving the stability of the user when performing treatment using the beauty treatment device 100.

[0104] Figure 6 1 is a flowchart illustrating a method for controlling the beauty treatment device 100 according to an embodiment of the present invention.

[0105] Reference Figure 6According to an embodiment of the present invention, a control method for a skin beauty device is a control method for a beauty treatment device, wherein, like the aforementioned skin beauty device, the beauty treatment device includes: a stimulation applying part that contacts the user's skin to apply stimulation to the user's skin; and a contact detection sensor including an electrostatic capacitance sensor to detect whether it contacts the user's skin.

[0106] At this time, a control method of the beauty treatment device according to one embodiment of the present invention is as follows.

[0107] First, the main body of the cosmetic treatment device 100 is brought into contact with the skin (step S10 ).

[0108] Next, it is first determined whether the main body of the cosmetic treatment device is in contact with the skin (step S20).

[0109] At this point, as described above, regarding whether the main body of the cosmetic surgery device 100 is in contact with the skin, when the capacitance of the capacitor 144 corresponds to the output value of the rectangular wave voltage (e.g., a specific value of 5V), it can be determined that the main body is not in contact with the skin. When the capacitance of the capacitor 144 does not correspond to the specific value or is measured to be less than the specific value, it is determined that the main body is in contact with the skin. If the main body is not in contact with the skin, the step of bringing the main body of the cosmetic surgery device into contact with the skin is repeated.

[0110] If it is determined that the body is in contact with the skin, the stimulation applying unit applies stimulation to the skin within a first time period (step S30). At this time, the time for applying stimulation to the skin can be selected as a preset specified time.

[0111] A rectangular wave voltage is supplied so that after the stimulus is applied during the first time period, a voltage corresponding to the capacitance of the capacitance sensor of the contact detection portion is measured during a prescribed specific second time period (step S40).

[0112] As described above, after the rectangular wave voltage is provided, it is determined for the second time whether the body contacts the skin (step S50).

[0113] At this time, if it is determined in the second determination that the body is kept in contact with the skin, stimulation is applied again within the first time period.

[0114] As described above, the steps of applying stimulation during the first time period and providing a rectangular wave voltage during the second time period may be repeated multiple times according to the treatment time.

[0115] If, after the step of providing the rectangular wave voltage, the second step of determining whether the body is in contact with the skin determines that the body is in a non-contact state, the stimulation applying unit 180 does not operate and ends the operation (step S60).

[0116] Then, after the main body of the beauty treatment device 100 is brought into contact with the skin again, it is determined whether the skin beauty treatment device is in contact with the skin, and the operation of the stimulation applying portion can be restarted.

[0117] On the other hand, after repeatedly performing the steps of applying stimulation to the skin within the first time period and providing a rectangular wave voltage to measure the electrostatic capacitance of the electrostatic capacitance sensor of the contact detection part within the second time period, the step of determining whether the main body is in contact with the skin for the second time may be performed.

[0118] According to one embodiment of the present invention, as described above, if the skin treatment device is separated from the skin during the prescribed skin treatment time for applying stimulation using the stimulation applying part, the stimulation applying part is stopped, and the skin treatment is performed while confirming whether the skin treatment device is in contact with the skin, so that the skin treatment device can be used to perform a more stable skin treatment.

[0119] Although the embodiments of the present invention have been described, the concept of the present invention is not limited to the embodiments presented in this specification, and ordinary technicians who understand the concept of the present invention can easily propose other embodiments within the scope of the same concept by adding, changing, deleting, and appending constituent elements, but this will also fall within the scope of the concept of the present invention.

Claims

1. A beauty treatment device having a contact detection sensor, the device being a beauty treatment device for performing a beauty treatment on a user's skin, the device comprising: a body having a contact surface capable of contacting the user's skin; a stimulation applying portion, disposed inside the body, for applying stimulation to the user's skin when the contact surface is in contact with the user's skin; a contact detection unit, comprising a contact detection sensor provided on the contact surface; as well as The controller determines whether the contact detection sensor contacts the user's skin, and controls the stimulation applying unit so that the stimulation applying unit operates only when the contact detection sensor contacts the user's skin.

2. The cosmetic treatment device having a contact detection sensor according to claim 1, wherein: The stimulation applying section applies stimulation to the user's skin through a high-frequency electrode or light irradiated onto the skin.

3. The cosmetic treatment device having a contact detection sensor according to claim 1, wherein: The contact surface is formed into any one of a circular, elliptical, and polygonal shape. The stimulation applied by the stimulation applying portion is formed in such a manner that it is applied toward the skin of the user at a position inside or around the contact surface. The contact detection sensor is arranged at another position around the contact surface.

4. The cosmetic treatment device having a contact detection sensor according to claim 3, wherein: The contact detection sensor includes at least a pair of contact detection members arranged around the contact surface.

5. The cosmetic treatment device having a contact detection sensor according to claim 4, wherein: The contact detecting members are arranged at equal intervals along the periphery of the contact surface.

6. The cosmetic treatment device having a contact detection sensor according to claim 4, wherein: The contact detection unit includes: a capacitor electrically connected to the contact detection member and provided in such a manner that the electrostatic capacitance changes depending on whether or not the contact detection member comes into contact with the skin; a voltage supply module for supplying a predetermined rectangular wave voltage to the capacitor, and The analog-to-digital converter is used to measure the electrostatic capacity of the capacitor.

7. The cosmetic treatment device having a contact detection sensor according to claim 6, wherein: The contact detection member comprises: a first contact detecting member and a second contact detecting member spaced apart from each other, The capacitor is electrically connected to the voltage supply module and connected to the first contact detection member. When both the first contact detecting member and the second contact detecting member are in contact with the user's skin, the capacitor is connected to the ground in parallel.

8. The cosmetic treatment device having a contact detection sensor according to claim 7, wherein: include: The switching element is used to turn on and off the rectangular wave voltage supplied by the voltage supply module.

9. The cosmetic treatment device having a contact detection sensor according to claim 8, wherein: The controller is configured as follows: When the electrostatic capacity according to the prescribed rectangular wave voltage supplied by the voltage supply module is judged to be a specific value, it is judged to be non-contact, When it is determined that it is not the specific value, it is determined to be in contact.

10. The cosmetic treatment device having a contact detection sensor according to claim 8, wherein: The controller is configured as follows: A first time period signal is provided to the stimulation applying part, and a second time period signal is provided to the voltage supply module, and the first time period signal and the second time period signal are provided alternately and periodically. The first time period signal is used for the stimulation applying part to apply stimulation, and the second time period signal is used for the voltage supply module to supply the rectangular wave voltage.

11. A method for controlling a beauty treatment device having a contact detection sensor, the beauty treatment device comprising a stimulation applying unit and a contact detection sensor, the stimulation applying unit applying stimulation to the user's skin by contacting the user's skin, the contact detection sensor comprising an electrostatic capacitance sensor for detecting whether the contact is made with the user's skin. The control method is characterized by comprising: The first step of determining whether the body of the beauty treatment device is in contact with the skin; When the body contacts the skin, the stimulation applying part applies stimulation to the skin within a first time period; After the first time period has elapsed, providing a rectangular wave voltage to measure the electrostatic capacitance of the electrostatic capacitance sensor of the contact detection unit during a second time period; as well as The second step is to determine whether the body contacts the skin.

12. The control method of a beauty treatment device having a contact detection sensor according to claim 11, wherein: In the step of determining whether the body of the beauty treatment device is in contact with the skin, When the electrostatic capacitance of the electrostatic capacitance sensor corresponds to a specific value corresponding to the output value of the rectangular wave voltage, it is determined that the body is not in contact with the skin. When the electrostatic capacitance of the electrostatic capacitance sensor does not correspond to the specific value, it is determined that the body is in contact with the skin.

13. The control method of a beauty treatment device having a contact detection sensor according to claim 11, wherein: After repeatedly performing the steps of applying stimulation to the skin in the first time period and providing a rectangular wave voltage to measure the electrostatic capacitance of the electrostatic capacitance sensor of the contact detection unit in the second time period after the first time period has elapsed, A second step of determining whether the body contacts the skin is performed.

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