Wireless multi-sensor apparatus capable of stably measuring skin

Abstract

A wireless multi-sensor apparatus capable of stably measuring skin, according to the present invention, comprises: a sensor unit that comes into contact with the skin of a wearer and measures the moisture level and transepidermal water loss (TEWL) of the skin; an actuator that has, on one side thereof, an adhesive layer that can be attached to the skin surface of the wearer, has the sensor unit coupled thereto, and automatically raises and lowers the sensor unit; and a control board that is coupled to one side of the actuator, controls the operation of the actuator, can be linked to a central server to transmit, to the central server, a measurement value measured by the sensor, and enables skin condition analysis and real-time monitoring based on the measurement value, wherein the sensor unit is raised and lowered by the operation of the actuator according to a cycle preset in the control board to selectively come into contact with the skin surface of the wearer, and the contact pressure with the skin is maintained constant by the actuator, thereby enabling stable and accurate measurement.

Description

A wireless multi-sensor device capable of stable skin measurement

[0001] The present invention relates to a wireless multi-sensor device capable of stable skin measurement, and more specifically, to a wireless multi-sensor device capable of stable skin measurement, which is attached to the skin surface of a wearer and regularly makes contact with the skin at a preset time to enable stable and accurate measurement of the skin condition, and also transmits the measured values ​​for the skin condition to a central server in real time to enable smooth analysis and real-time monitoring of the skin condition.

[0002]

[0003] The skin covers the outer surface of the human body and is the largest organ of the body that functions as a protective barrier against the physical and chemical external environment, while also being a tissue that regulates biochemical functions necessary for whole body metabolism.

[0004] In other words, the human body's skin performs important functions such as preventing the invasion of bacteria and harmful substances from the outside, waterproofing, and regulating body temperature.

[0005] In particular, the stratum corneum, the outermost layer of the skin exposed to the external environment, is responsible for regulating body fluids and moisture and maintaining homeostasis in the body.

[0006] Regarding the stratum corneum of the skin, factors such as skin color, moisture and oil content, and elasticity are important criteria for judging skin condition in both the fields of beauty and dermatology, and serve as a measure for determining skin characteristics and the presence of diseases.

[0007] It is known that the softness and elasticity of the skin are maintained when the moisture content of the stratum corneum is 10% or higher.

[0008] In addition, when the function of the protective barrier is reduced, that is, when the transepidermal water loss is large, external allergens can easily penetrate through the skin, causing various skin diseases such as atopic dermatitis. Therefore, strengthening and maintaining the skin protective barrier function is especially important for patients with skin diseases. To this end, it is important to measure the skin condition to identify the symptoms of skin diseases or analyze the current skin condition.

[0009] However, in the case of conventional skin measurement devices, the measured values ​​fluctuate greatly depending on the external environment, such as sweating or applying moisturizer, or the external temperature, making it difficult to obtain accurate measurements. In addition, since the user manually presses the device against his or her own skin to measure, the pressure varies each time, which reduces the reliability of the measured values.

[0010] Therefore, a method to solve these problems is required.

[0011]

[0012] The present invention is an invention devised to solve the problems of the above-described prior art, and is attached to the skin of a wearer to automatically measure skin moisture and TEWL at preset time intervals for a long period of time, while blocking interference from the external environment between measurements and ensuring that the sensor contacts the skin surface with a constant pressure, thereby enabling accurate and stable measurement, and transmitting the measured values ​​to a central server in real time for analysis, thereby enabling accurate skin condition analysis based on accurate measured values ​​to be stably monitored for a long period of time.

[0013] The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the description below.

[0014]

[0015] In order to achieve the above object, the present invention provides a wireless multi-sensor device capable of stable skin measurement, comprising: a sensor unit that measures skin moisture and TEWL (transepidermal water loss) by coming into contact with the skin of a wearer; an actuator having an adhesive layer attached to the surface of the skin of the wearer formed on one side thereof, the sensor unit being coupled thereto, which automatically raises and lowers the sensor unit; and a control board coupled to one side of the actuator to control the operation of the actuator and to be capable of linking with a central server so as to transmit the measured values ​​from the sensor unit to the central server and enable skin condition analysis and real-time monitoring based on the measured values; wherein the sensor unit is raised and lowered by the operation of the actuator according to a cycle preset in the control board, so as to selectively come into contact with the surface of the skin of the wearer; and a contact pressure with the skin is maintained constant by the actuator, thereby enabling stable and accurate measurement.

[0016] At this time, the sensor unit may further include a connecting body having a bending portion that is bent downwards in a 'ㄷ' shape with the upper part of the center open, each end of which is connected to the actuator, a first sensor unit that is provided on the outside of the bending portion and measures the TEWL of the skin, a second sensor unit that is provided on the inside of the bending portion and measures the moisture content of the skin, a cover module that is detachably connected to the actuator and has a plate shape having a predetermined width, and both sides of the connecting body are connected upwardly through the bending portion based on the bending portion, and a chamber module that is detachably connected to the lower surface of the cover module and has a pillar shape that is open in the center so that the bending portion is positioned therein, and the cover module may further include a measuring portion that is formed to protrude downward at the center and is fitted into the bending portion, and has a hollow interior but has one side open to form a measuring space in which the second sensor unit is positioned therein.

[0017] In addition, the sensor unit further includes a heating unit provided on the lower outer surface of the bending unit to assist in the measurement of the second sensor unit, and the multi-sensor device can measure the moisture content by detecting the heat transfer rate that varies depending on the moisture content through a negative temperature coefficient (NTC) thermistor in the second sensor unit, and the heat generated from the heating unit is transferred to the wearer's skin.

[0018] At this time, the second sensor unit is composed of two pairs of mutually spaced temperature sensors provided on the lower inner surface of the bending portion, and is positioned inside the measuring portion so that measurement can be performed without temperature interference due to changes in the external environment.

[0019] Additionally, the chamber module may include a plurality of ventilation holes formed along the outer circumference.

[0020] At this time, the chamber module is made of a material having its own elasticity, and when the sensor unit is lowered by the actuator, the cover module coupled to the actuator is compressed by pressurizing the upper portion, thereby closing the plurality of ventilation holes, and when the sensor unit is raised by the actuator, the compression is released, and the plurality of ventilation holes can be opened by the elastic restoring force.

[0021] At this time, the connecting body can be coupled so that the bending portion is positioned at the center of the actuator.

[0022] And the actuator comprises a base having a frame shape with an open center and detachably attached to the surface of the wearer's skin by forming an adhesive layer on the lower surface thereof, a fastening portion provided on the open surface of the base and coupled by at least one connecting portion extending inward from the base and having an open opening in the center, a driving plate having its own elasticity and fastened to the fastening portion in a convex arch shape at the center, and a driving portion provided in pairs symmetrically with respect to the center of the driving plate and capable of being linked to the control board so that the arch shape of the driving plate selectively forms either an upward arch shape or a downward arch shape, the bending portion is located at the lower portion of the driving plate, and the bending portion rises and falls by penetrating the opening according to a change in the shape of the driving plate, so that the sensor portion can selectively come into contact with the wearer's skin.

[0023] Additionally, the base may further include a plurality of connecting portions formed along the periphery to which the control board is connected.

[0024] At this time, the fastening member may include a plurality of fastening members to which the driving plate is fastened and a fastening groove formed inside the fastening members and inserted so that one side of the driving plate is engaged.

[0025] At this time, the driving plate may further include a variable groove corresponding to the engaging groove.

[0026] In addition, the driving plate further includes a compression portion that allows the sensor portion to rise and fall as the shape of the driving plate changes by closely bonding the upper surface of the cover module, and the compression portion can pressurize the cover module when the driving plate changes into a downward arch shape so that the bending portion can contact the surface of the wearer's skin with a constant pressure.

[0027] At this time, the driving unit may include a pair of fixed modules that are fixedly coupled to face each other on both sides of the driving plate, and a pair of fixed modules that are coupled to each other and are connected to each other, and a wire module made of a shape memory alloy.

[0028] In addition, the wire module may include a first wire connected to one of the pair of driving units provided on the driving plate and located on the upper side of the driving plate, and a second wire connected to the opposite driving unit to which the first wire is connected among the pair of driving units provided on the driving plate and located on the lower side of the driving plate.

[0029] The driving unit is configured such that when a current applied and transmitted from the control board flows to the first wire, heat is generated in the first wire, causing a contraction effect, and the driving plate is deformed to form a downward arch shape due to the contraction effect of the first wire; when a current applied and transmitted from the control board flows to the second wire, heat is generated in the second wire, causing a contraction effect, and the driving plate is deformed to form an upward arch shape due to the contraction effect of the second wire; and the control board alternately applies current to the driving unit to which the first wire is connected and the driving unit to which the second wire is connected according to a preset time, so that the sensor unit can smoothly rise and fall according to the change in the shape of the driving plate.

[0030] Additionally, the multi-sensor device may further include a fixing band coupled to the actuator to ensure that the actuator is stably attached to the wearer's skin.

[0031]

[0032] The wireless multi-sensor device capable of stable skin measurement according to the present invention for solving the above-mentioned problem has the following effects.

[0033] First, there is an advantage in that the sensor part is automatically raised and lowered by the driving part according to a preset time while attached to the surface of the wearer's skin, so that it comes into contact with the wearer's skin with a constant pressure, thereby enabling accurate measurement.

[0034] Second, since ventilation is secured through the ventilation holes formed on the outer surface of the chamber module, there is an advantage in that accurate measurements can be made without interference from the external environment.

[0035] Third, since the measured values ​​from the sensor unit are transmitted in real time to the central server, analysis of skin moisture and TEWL is performed, so that analysis of skin condition can be performed stably. In addition, since it is attached to the surface of the wearer's skin and stable measurement is possible for a certain period of time, there is an advantage in that real-time monitoring of skin condition can be performed stably.

[0036] The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

[0037]

[0038] FIG. 1 is an exemplary diagram showing the overall appearance of a wireless multi-sensor device capable of stable skin measurement according to an embodiment of the present invention;

[0039] FIG. 2 is an exploded perspective view showing a wireless multi-sensor device capable of stable skin measurement according to an embodiment of the present invention;

[0040] FIG. 3 is an exemplary diagram showing the driving appearance of a driving unit in a wireless multi-sensor device capable of stable skin measurement according to an embodiment of the present invention;

[0041] FIG. 4 and FIG. 5 are exemplary diagrams showing a sensor unit in a wireless multi-sensor device capable of stable skin measurement according to an embodiment of the present invention;

[0042] FIG. 6 is an exemplary diagram showing a chamber module in a wireless multi-sensor device capable of stable skin measurement according to an embodiment of the present invention;

[0043] FIG. 7 is an exemplary diagram showing the operation of a sensor unit and a chamber module that are automatically raised and lowered by a driving unit in a wireless multi-sensor device capable of stable skin measurement according to an embodiment of the present invention; and

[0044] FIG. 8 is an exemplary diagram showing a multi-sensor device with a fixed band attached in a wireless multi-sensor device capable of stable skin measurement according to an embodiment of the present invention.

[0045]

[0046] <Explanation of symbols>

[0047] 100: Actuator

[0048] 110: Base

[0049] 111: Joint

[0050] 120: Drive plate

[0051] 121: Variable home

[0052] 122: Compression part

[0053] 130: Drive unit

[0054] 131: Fixed module

[0055] 132: First Wire

[0056] 133: Second Wire

[0057] 140: Binding

[0058] 141: Opening

[0059] 142: Absence of binding

[0060] 143: Solidarity Home

[0061] 200: Sensor section

[0062] 210: Connecting body

[0063] 220: Cover module

[0064] 231: First sensor unit

[0065] 232: Second sensor unit

[0066] 233: Heating unit

[0067] 240: Chamber module

[0068] 241: Ventilation hole

[0069] 300: Control board

[0070] 400: Fixed band

[0071] A: Multi-sensor device

[0072]

[0073] Hereinafter, preferred embodiments of the present invention, which can specifically realize the objectives of the present invention, will be described with reference to the attached drawings. In describing the present embodiments, identical names and symbols will be used for identical components, and additional explanations thereof will be omitted.

[0074] The present invention relates to a wireless multi-sensor device capable of stable skin measurement, which is attached to the skin surface of a wearer and regularly contacts the skin at a preset time to enable stable and accurate measurement of the skin condition, and also transmits the measured values ​​for the skin condition to a central server in real time to enable smooth analysis and real-time monitoring of the skin condition.

[0075] The multi-sensor device (A) according to the present invention may include, as illustrated in FIGS. 1 and 2, a sensor unit (200) that can selectively come into contact with the skin of a wearer to measure skin moisture and TEWL (transepidermal water loss), an actuator (100) that can form an adhesive layer that can be attached to the surface of the skin of the wearer on one side, to which the sensor unit (200) is coupled, and which automatically raises and lowers the sensor unit (200) so that the sensor unit (200) can selectively come into contact with the skin of the wearer, and a control board (300) that can be coupled to one side of the actuator (100) to control the operation of the actuator (100), and can be linked to a central server such as a mobile device or computer of the wearer so that a measurement value for the skin condition of the wearer measured by the sensor unit (200) can be transmitted to the central server, and a skin condition analysis and real-time monitoring based on the measurement value can be enabled.

[0076] At this time, the sensor unit (200) is repeatedly raised and lowered by the driving of the actuator (100) according to a time cycle preset in the control board (300), so that selective contact can be made with the wearer's skin surface, and the contact pressure with the skin is maintained constant by the actuator (100), so that more stable and accurate measurement can be made than when a person directly manually brings the measurement sensor into contact with the skin.

[0077] According to one embodiment of the present invention, the sensor unit (200) may be configured to include a connecting body (210) having a bent portion that is bent downward in a 'ㄷ' shape with the upper part of the center open, a first sensor unit (231) provided on one side of the bent portion, more specifically on the outer surface of the bent portion, for measuring TEWL of the skin, a second sensor unit (232) provided on one side of the bent portion, more specifically on the inner surface of the bent portion, for measuring moisture content of the skin, and a cover module (220) that may be detachably coupled to the actuator (100) and is formed in a plate shape with a constant width, and in which both sides of the connecting body (210) are connected upwardly through the bent portion.

[0078] At this time, in the embodiment of the present invention, the cover module (220) is illustrated as being formed in a circular plate shape, but it should be recognized that it is not limited thereto and may also be formed in a square plate shape or a polygonal plate shape.

[0079] In addition, the cover module (220) may further include a measuring unit in which the center protrudes downward and can be fitted into a folded portion formed in the connecting body (210) from the upper side to the lower side, and the inside is hollow but one side is open so that the second sensor unit (232) provided on the inner side of the folded portion can be positioned inside, thereby forming a measuring space to enable stable measurement of moisture in the wearer's skin.

[0080] For example, the cover module (220) may be formed in a plate shape having a predetermined area that covers the entire upper portion of the folded portion, and a measuring portion may be formed in the lower center portion to be inserted into the folded portion, and holes may be formed on both sides of the connecting body (210) centered on the measuring portion, more specifically, on both sides of the connecting body (210) centered on the folded portion, through which the connecting body (210) passes, and the connecting body (210) is bent on both sides centered on the folded portion to pass through the pair of holes, so that a part of the connecting body (210) may be positioned on the upper surface of the cover module (220) so that the connecting body (210) and the cover module (220) may be coupled.

[0081] In addition, the sensor unit (200) may further include a heating unit (233) that can be provided on the lower outer surface of the bending portion formed in the connecting body (210) and assists the measurement of the second sensor unit (232) provided on the inner surface of the bending portion.

[0082] For example, the multi-sensor device (A) can transmit heat generated from the heating unit (233) provided on the lower outer surface of the bending portion formed in the connecting body (210) to the wearer's skin, and the second sensor unit (232) can detect the heat transfer rate that varies depending on the moisture content through a negative temperature coefficient (NTC) thermistor, thereby allowing the moisture content of the wearer's skin to be measured.

[0083] At this time, it is preferable that the second sensor unit (232) for measuring the moisture content of the wearer's skin is provided on the lower side of the inner side of the bending part and is provided side by side with the heating unit (233) and the bending part in between so that the heat generated by the heating unit (233) can be measured differently depending on the moisture content.

[0084] In addition, when the measuring part is hollow inside but has an open bottom and is inserted into the bending part, the second sensor unit (232) provided on the lower side of the bending part is covered so that it is positioned inside, thereby forming a measuring space that allows the second sensor unit (232) to stably measure moisture without external interference.

[0085] In this way, the second sensor unit (232) for measuring the moisture content of the skin is preferably composed of two pairs of temperature sensors spaced apart from each other, and by performing FEA simulation for the temperature difference measured by the two pairs of temperature sensors that measure different temperatures by the distance spaced apart from each other, the temperature difference between the two pairs of temperature sensors can be made constant even if a temperature change occurs due to an external environmental change, for example, the temperature of the skin or the atmosphere, so that more accurate moisture content measurement can be performed.

[0086] In addition, the sensor unit (200) may be coupled to the lower surface of the cover module (220) in a detachable manner and may further include a chamber module (240) having a pillar shape with an open central portion so that the bending portion is positioned inside.

[0087] The chamber module (240) may be formed in a cylindrical shape with the upper and lower surfaces open, with the central portion open to form a space into which the bending portion can be inserted, but is not limited thereto, and the plate shape of the cover module (220) may also be formed in a square pipe shape or a polygonal pipe shape, which are the same shape.

[0088] In addition, it is preferable that the chamber module (240) be formed with a plurality of ventilation holes (241) along the outer circumference thereof, so that ventilation of the inside and outside of the chamber module (240) can be smoothly achieved, thereby ensuring the ventilation of the chamber module (240).

[0089] The chamber module (240) is made of a material having its own elasticity, so that when the sensor unit (200) is lowered by the actuator (100), the upper part can be pressurized and compressed, and when the sensor unit (200) is raised, the pressure applied to the upper part is released and the original shape is restored, thereby allowing the ventilation hole (241) to be opened and closed.

[0090] In other words, the chamber module (240) is made of an elastic body having its own elasticity, and when the sensor unit (200) is lowered by the actuator (100) to measure the skin condition, the cover module (220) coupled with the actuator (100) presses and compresses the upper part of the chamber module (240), thereby closing the ventilation hole (241) formed on the outer surface of the chamber module (240), so that the first sensor unit (231) provided on the outer surface of the folded part and located inside the chamber module (240) can measure the TEWL of the skin without external interference, and when the sensor unit (200) is raised by the actuator (100) after the measurement of the skin condition is completed, the pressure pressing the upper part of the chamber module (240) decreases, so that the As the chamber module (240) returns to its original state by elastic restoring force and the compressed state is released, the ventilation hole (241) formed on the outer surface is opened, so that ventilation inside the chamber module (240) is smoothly performed, and moisture inside the chamber module (240) can be discharged between measurements.

[0091] In addition, the formation of multiple ventilation holes (241) on the outer surface of the chamber module (240) plays an important role in ensuring ventilation so that the multi-sensor device (A) attached to the wearer's skin can be prevented from affecting the wearer's skin evaporation activity in addition to the measurement time.

[0092] The sensor unit (200) having the above structure can be more easily understood with reference to FIGS. 4 to 6, and it is preferable that the connecting body (210) of the sensor unit (200) be coupled so that the bending portion can be positioned at the center of the actuator (100).

[0093] According to one embodiment of the present invention, the actuator (100) may include a base (110) having an adhesive layer formed on a lower surface thereof and detachably attached to the surface of the wearer's skin, and having a frame shape with an open center; a fastening portion (140) that can be provided on the open surface of the base (110) and can be coupled by at least one connecting portion extending inward from the base (110) and having an opening (141) with an open center; a driving plate (120) that is fastened to the fastening portion (140) and has its own elasticity and is fastened in a convex arch shape at the center; and a driving portion (130) that is provided in pairs so as to be symmetrical with respect to the center of the driving plate (120), and that can be linked to the control board (300) so that the arch shape of the driving plate (120) selectively forms either an upward arch shape or a downward arch shape.

[0094] At this time, the adhesive layer may be made of an elastomer layer having a soft yet sticky viscosity so that it can be attached to the wearer's skin for a long time without causing any strain.

[0095] In addition, the bending portion formed in the connecting body (210) may be positioned at the lower portion of the driving plate (120), and the bending portion may be raised and lowered by penetrating the opening (141) according to a change in the shape of the driving plate (120), so that the sensor portion (200) may selectively come into contact with the wearer's skin.

[0096] At this time, the base (110) may further include a connecting portion (111) formed so that a plurality of upward protrusions are formed along the perimeter except for the open central portion, to which the control board (300) can be connected.

[0097] At this time, it should be recognized that the control board (300) is also formed in a form with an open center, similar to the base (110).

[0098] That is, the multi-sensor device (A) is structured such that, as shown in FIGS. 1 and 2, the base (110) and the control board (300) are stacked based on the wearer's skin, the sensor unit (200) is positioned in the open central portion of the base (110) and the control board (300), and the driving plate (120) coupled with the driving unit (130) is positioned on the upper portion of the sensor unit (200).

[0099] According to one embodiment of the present invention, the fastening portion (140) may be formed by a plurality of fastening members (142) that are formed to form a set on opposite sides and protrude upward so that both sides of the driving plate (120) can be fastened and fixed, and a fastening groove (143) formed in the fastening members (142) and inserted so that one side of the driving plate (120) is engaged.

[0100] At this time, it is preferable that the binding groove (143) be formed in a '<' shape that is inserted into the inside of the binding member (142), so that the shape change, more specifically, the shape change into an upward arch shape and a downward arch shape, can be smoothly performed in a state where the driving plate (120) is inserted, while at the same time limiting the shape change range of the driving plate (120).

[0101] That is, the above-mentioned fastening groove (143) is not intended to completely fix and fasten the driving plate (120), but rather to allow for the fastening to be performed in a state in which a smooth change to an upward arch shape or a downward arch shape can be achieved by the driving of the driving unit (130).

[0102] At this time, a variable groove (121) corresponding to the engaging groove (143) may be formed on the driving plate (120), and by engaging the variable groove (121) with the engaging groove (143), the driving plate (120) can be smoothly engaged with the engaging member (142), and can be prevented from being indiscriminately separated from the engaged position.

[0103] In addition, the driving plate (120) may further include a pressing portion (122) that allows the sensor unit (200) to be raised and lowered as the shape of the driving plate (120) changes by closely coupling the upper surface of the cover module (220), and the pressing portion (122) may serve to pressurize the upper portion of the cover module (220) when the driving plate (120) changes into a downward arch shape so that the bent portion of the sensor unit (200) can come into contact with the wearer's skin surface at a constant pressure.

[0104] According to one embodiment of the present invention, the driving unit (130) that changes the shape of the driving plate (120) into an upward arch shape or a downward arch shape may include a pair of fixed modules (131) that are fixedly coupled to face each other on both sides of the driving plate (120) and a wire module that is coupled so that the pair of fixed modules (131) can be interconnected.

[0105] At this time, the wire module may be connected to a pair of the fixed modules (131) forming one of the pair of driving units provided on the driving plate (120), and may include a first wire (132) that can be positioned on the upper side of the driving plate (120), and a second wire (133) that can be positioned on the lower side of the driving plate (120), and is connected to a pair of fixed modules (131) forming the driving unit (130) on the opposite side to which the first wire (132) is connected among the pair of driving units provided on the driving plate (120).

[0106] That is, the driving unit (130) is composed of a pair positioned at a symmetrical point based on the center of the driving plate (120), and each is composed of a pair of fixed modules (131) and a wire module connected thereto. The wire module connected to one driving unit (130) is positioned at the upper portion of the driving plate (120), and the wire module connected to the other driving unit (130) can be positioned at the lower portion of the driving plate (120).

[0107] The wire module of the above driving unit (130) is made of a shape memory alloy and can change the driving plate (120) into an upward arch shape or a downward arch shape through shape change due to heat.

[0108] For example, when the current applied and transmitted from the control board (300) flows to the first wire (132), heat is generated in the first wire (132) by the current, causing the first wire (132) to contract, and the driving plate (120) can be varied to form a downward arch shape by the tensile force generated by the contraction of the first wire (132). When the current applied and transmitted from the control board (300) flows to the second wire (133), heat is generated in the second wire (133) by the current, causing the second wire (133) to contract, and the driving plate (120) can be varied to form an upward arch shape by the tensile force generated by the contraction of the second wire (133).

[0109] At this time, it is preferable that the control board (300) alternately applies current to the driving unit (130) connected to the first wire (132) and the driving unit (130) connected to the second wire (133) according to a preset time so that the sensor unit (200) can smoothly rise and fall according to the shape change of the driving plate (120).

[0110] The driving appearance of the actuator (100) can be more easily understood with reference to FIG. 3, and the selective contact of the sensor unit (200) with the wearer's skin surface by the actuator (100) can be more easily understood with reference to FIG. 7.

[0111] In addition, according to one embodiment of the present invention, the multi-sensor device (A) may further include a fixing band (400) that can be coupled to both sides of the actuator (100), more specifically, the base (110), as shown in FIG. 8, and that assists the adhesive layer so that the attachment state of the actuator (100) can be stably maintained.

[0112] The above-mentioned fixed band (400) may be of a rubber band type, but is not limited thereto, and may be of a belt type with Velcro or a clip and may be connected to wrap around a body part of the wearer whose skin condition is to be measured.

[0113]

[0114] As described above, preferred embodiments of the present invention have been described. It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms, in addition to the embodiments described above, without departing from the spirit or scope thereof. Therefore, the above-described embodiments should be considered illustrative rather than restrictive, and accordingly, the present invention is not limited to the above description, but may be modified within the scope of the appended claims and their equivalents.

[0115]

[0116] According to the present invention, the sensor part is automatically raised and lowered by the driving part according to a preset time while attached to the surface of the wearer's skin, so that it comes into contact with the wearer's skin at a constant pressure, thereby enabling accurate measurement, which can be more effective in the field of measuring skin conditions.

Claims

1. A sensor part that comes into contact with the wearer's skin and measures the skin's moisture level and TEWL (transepidermal water loss); An adhesive layer that can be attached to the wearer's skin surface is formed on one side, and an actuator that automatically raises and lowers the sensor part while the sensor part is combined; and A control board coupled to one side of the actuator to control the operation of the actuator and capable of being linked to a central server to transmit the measurement values ​​measured by the sensor unit to the central server and to enable skin condition analysis and real-time monitoring based on the measurement values; Including, The above sensor part, A wireless multi-sensor device capable of stable skin measurement, which is raised and lowered by the operation of the actuator according to a cycle set in the above control board to selectively contact the surface of the wearer's skin, and the contact pressure with the skin is maintained constant by the actuator to perform stable and accurate measurement.

2. In paragraph 1, The above sensor part, A connecting body having a downwardly bent 'ㄷ' shape with the upper end open and the central end being respectively connected to the actuator; A first sensor unit provided on the outer side of the above-mentioned bending portion to measure TEWL of the skin; A second sensor unit provided on the inner side of the above-mentioned bending portion to measure the moisture level of the skin; A cover module that is detachably connected to the actuator and is formed in a plate shape with a certain width, and both sides of the connecting body are connected upwardly through the bending portion; and A chamber module having a pillar shape with an open central portion so that the folded portion is positioned inside and is detachably coupled to the lower surface of the cover module; Including, The above cover module, A measuring unit formed by protruding downward from the center and fitted into the above-described bending portion, and having a hollow interior but with one side open to form a measuring space so that the second sensor unit can be positioned inside; A wireless multi-sensor device capable of stable skin measurement including:

3. In paragraph 2, The above sensor part, A heating unit provided on the lower outer surface of the above-mentioned bending portion to assist the measurement of the second sensor unit; Including more, The above multi-sensor device, A wireless multi-sensor device capable of stable skin measurement in which heat generated from the above heating unit is transferred to the wearer's skin, and the second sensor unit detects the heat transfer rate that varies depending on the moisture content through a negative temperature coefficient (NTC) thermistor, thereby measuring the moisture content.

4. In paragraph 3, The above second sensor unit, A wireless multi-sensor device capable of stable skin measurement, comprising two pairs of mutually spaced temperature sensors provided on the lower inner surface of the above-mentioned bending portion, and positioned inside the above-mentioned measuring portion so that measurement is performed without temperature interference due to changes in the external environment.

5. In paragraph 2, The above chamber module, A plurality of ventilation holes formed along the outer periphery; A wireless multi-sensor device capable of stable skin measurement including:

6. In paragraph 5, The above chamber module, It is made of a material that has its own elasticity. When the sensor part is lowered by the actuator, the cover module coupled with the actuator is compressed by pressurizing the upper portion, thereby closing the plurality of ventilation holes. A wireless multi-sensor device capable of stable skin measurement in which the sensor section is raised by the actuator, compression is released, and a plurality of the ventilation holes are opened by elastic restoring force.

7. In paragraph 2, The above connecting body is, A wireless multi-sensor device capable of stable skin measurement, wherein the above-mentioned bending part is coupled so as to be positioned at the center of the above-mentioned actuator.

8. In paragraph 2, The above actuator, A base having an adhesive layer formed on the lower side and detachably attached to the surface of the wearer's skin, and having a frame shape with an open center; A fastening member provided on the open surface of the base, joined by at least one connecting member extending inwardly from the base, and having an open opening in the center; A drive plate having its own elasticity, which is connected to the above-mentioned fastening member and is connected in a convex arch shape at the center; and A driving unit provided in pairs so as to be symmetrical with respect to the center of the driving plate, and capable of being linked to the control board so that the arch shape of the driving plate selectively forms either an upward arch shape or a downward arch shape; Including, A wireless multi-sensor device capable of stable skin measurement in which the above-mentioned bending part is positioned at the lower portion of the driving plate, and the bending part rises and falls through the opening according to changes in the shape of the above-mentioned driving plate, thereby selectively contacting the wearer's skin with the sensor part.

9. In paragraph 8, The above base is, A plurality of joints formed along the perimeter to which the control board is joined; A wireless multi-sensor device capable of stable skin measurement including:

10. In paragraph 8, The above bonding part is, A plurality of fastening members to which the above driving plate is fastened; and A bonding groove formed into the above bonding member and inserted so that one side of the driving plate engages; A wireless multi-sensor device capable of stable skin measurement including:

11. In paragraph 10, The above driving plate is, A variable groove corresponding to the above-mentioned bonding groove; A wireless multi-sensor device capable of stable skin measurement including:

12. In paragraph 8, The above driving plate is, A compression member that allows the sensor unit to rise and fall as the shape of the driving plate changes by closely bonding the upper surface of the cover module; Including more, The above compression part, A wireless multi-sensor device capable of stable skin measurement, which pressurizes the cover module so that the bending part contacts the wearer's skin surface with a constant pressure when the above driving plate changes into a downward arch shape.

13. In paragraph 8, The above driving part, A pair of fixed modules that are fixedly coupled to face each other on both sides of the above driving plate; and A wire module made of a shape memory alloy, wherein a pair of the above fixed modules are connected to each other; A wireless multi-sensor device capable of stable skin measurement including:

14. In paragraph 13, The above wire module, A first wire connected to one of the pair of driving units provided on the driving plate, and positioned on the upper portion of the driving plate; and A second wire connected to the opposite driving unit to which the first wire is connected among the pair of driving units provided on the driving plate, and located at the bottom of the driving plate; A wireless multi-sensor device capable of stable skin measurement including:

15. In paragraph 14, The above driving part, When the current applied and transmitted from the above control board flows to the first wire, heat is generated in the first wire, causing a contraction, and the driving plate is deformed to form a downward arch shape due to the contraction of the first wire. When the current applied and transmitted from the above control board flows to the second wire, heat is generated in the second wire, causing a contraction, and the driving plate is changed to form an upward arch shape due to the contraction of the second wire. The above control board, A wireless multi-sensor device capable of stable skin measurement, which alternately applies current to a driving unit connected to the first wire and a driving unit connected to the second wire according to a preset time so that the sensor unit rises and falls smoothly according to a change in the shape of the driving plate.

16. In paragraph 1, The above multi-sensor device, A fixing band coupled to the above actuator and ensuring that the attachment state of the actuator to the wearer's skin is stably maintained; A wireless multi-sensor device capable of stable skin measurement including:

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