KR102061614B1 - Active type skin contact sensor - Google Patents

Abstract

The active skin contact sensor is provided on a support layer, the support layer and the contact layer in contact with the skin, a concave chamber in contact with the skin to form a closed space on the surface of the contact layer and the pressure in the chamber by changing the pressure with the skin At least one contact force control unit having a driving unit for adjusting the contact force, and a sensor for measuring the condition of the skin.

Description

Active Skin Contact Sensor {ACTIVE TYPE SKIN CONTACT SENSOR}

The present invention relates to an active skin contact sensor. More specifically, the present invention relates to an active skin contact sensor for measuring physiological data in contact with the skin.

As interest in physical and mental health has increased and biosignal sensing technology has been developed, many studies have recently been conducted on techniques for measuring biosignals on the skin surface. In the case of measuring the bio-signal on the skin surface, the error of the signal due to the movement is large. In order to use it in everyday life, the noise reduction method is selected through external devices (fixing devices such as adhesives and bands) that can be attached to the skin. However, the method using a chemical adhesive has the disadvantage that there is a risk of skin damage when the skin contact and it is impossible to reuse.

Patent Document 1: Korea Patent Publication No. 10-2016-0094591

One object of the present invention is to provide an active skin contact sensor that can be used in everyday life by measuring the biological signal minimized noise from the skin surface is attached to the skin and easy to attach and detach.

Active skin contact sensor according to an exemplary embodiment for achieving the object of the present invention is a support layer, a contact layer provided on the support layer and in contact with the skin, the contact layer surface in contact with the skin to form a closed space At least one contact force adjusting unit having a concave chamber to form and a driving unit for changing the pressure in the chamber to adjust the contact force with the skin, and a sensor for measuring the state of the skin.

In example embodiments, the driving unit may include a heater for varying a temperature in the chamber.

In example embodiments, the driving unit may include a hydraulic control channel for supplying a fluid into the chamber to change the pressure.

In example embodiments, the contact force controller may further include a protrusion extending along an open upper circumference of the chamber and protruding from the surface of the contact layer.

In example embodiments, the active skin contact sensor may include a detection electrode formed around an open upper end of the chamber, and may further include a contact detector for detecting contact with the skin.

In example embodiments, the detection electrode may include electrode patterns spaced apart along an open upper circumference of the chamber.

In example embodiments, the sensor may detect at least one of the temperature, humidity, electrical conductivity, pH, elasticity, pulse wave, and chemical composition of the skin of the skin.

In example embodiments, the sensor may include a first sensor provided in the support layer to measure pulse waves and a second sensor provided on a surface of the contact layer to measure skin conditions.

In example embodiments, the chamber may be arranged in a plurality of arrays.

In example embodiments, the active skin contact sensor may further include a control circuit part connected to the driver and the sensor to process a control signal and a detection signal.

Active skin contact sensor according to an exemplary embodiment for achieving the object of the present invention by changing the pressure in the adsorption chamber and the thin film structure in contact with the skin, the adsorption chamber formed so that the top is opened on the surface of the thin film structure At least one contact force control unit having a driving unit for adjusting the contact force with the skin, and a sensor for measuring the state of the skin.

In example embodiments, the driving unit may change the pressure in the adsorption chamber in a thermo pneumatic or pneumatic manner.

In example embodiments, the driving unit may include a heater for varying a temperature in the adsorption chamber.

In example embodiments, the driving unit may include a hydraulic control channel for supplying a fluid into the adsorption chamber to vary the pressure.

In example embodiments, the contact force controller may further include a protrusion extending along an open upper circumference of the adsorption chamber and protruding from the contact layer surface.

In example embodiments, the active skin contact sensor may include a detection electrode formed around an open upper end of the adsorption chamber, and may further include a contact detector for detecting contact with the skin.

In example embodiments, the sensor may detect at least one of the temperature, humidity, electrical conductivity, pH, elasticity, pulse wave, and chemical composition of the skin of the skin.

In example embodiments, the sensor may include a first sensor for measuring a skin condition and a second sensor for measuring a pulse wave.

In example embodiments, a plurality of adsorption chambers may be arranged in an array form.

In example embodiments, the active skin contact sensor may further include a control circuit part connected to the driver and the sensor to process a control signal and a detection signal.

According to exemplary embodiments, it is possible to provide a miniaturized and integrated single device capable of measuring skin conductivity, skin temperature, and pulse wave, which are known as physiological data indicating the degree of activity of the human autonomic nervous system. Therefore, it is possible to minimize the effect of the existing equipment attached to the subject's emotion for physiological data collection.

In addition, the contact force control unit composed of the driving unit and the chamber can adjust the attachment force with the external object to be measured and can be put to practical use of the device that is easy to attach and detach without a fixing mechanism. In addition, the sensor can be integrated to obtain a low noise signal.

However, the effects of the present invention are not limited to the above-mentioned effects, and may be variously expanded within a range without departing from the spirit and scope of the present invention.

1 is an exploded perspective view illustrating an active skin contact sensor in accordance with example embodiments.
FIG. 2 is a plan view illustrating the active skin contact sensor of FIG. 1. FIG.
3 is a cross-sectional view taken along the line AA ′ of FIG. 2.
4 is a cross-sectional view illustrating a closed space in a chamber formed by skin attached to the active skin contact sensor of FIG. 1.
5 is a cross-sectional view illustrating a contact force controller of an active skin contact sensor according to example embodiments.
6 is a plan view illustrating a contact detector of an active skin contact sensor according to example embodiments.
7 is an exploded perspective view illustrating an active skin contact sensor in accordance with example embodiments.
8 is a plan view illustrating a support layer of the active skin contact sensor of FIG. 7.
9 is a cross-sectional view illustrating a contact force adjusting unit of the active skin contact sensor of FIG. 7.
10 is a plan view illustrating a support layer of an active skin contact sensor in accordance with example embodiments.
11 is a plan view illustrating a support layer of an active skin contact sensor in accordance with example embodiments.
12 is a plan view illustrating an active skin contact sensor in accordance with example embodiments.
13 is a plan view illustrating an active skin contact sensor in accordance with example embodiments.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In each of the drawings of the present invention, the dimensions of the structures are shown in an enlarged scale than actual for clarity of the invention.

In the present invention, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

With respect to the embodiments of the present invention disclosed in the text, specific structural to functional descriptions are merely illustrated for the purpose of describing embodiments of the present invention, embodiments of the present invention may be implemented in various forms and It should not be construed as limited to the embodiments described in.

That is, the present invention may be modified in various ways and may have various forms. Specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

1 is an exploded perspective view illustrating an active skin contact sensor in accordance with example embodiments. FIG. 2 is a plan view illustrating the active skin contact sensor of FIG. 1. FIG. 3 is a cross-sectional view taken along the line AA ′ of FIG. 2. 4 is a cross-sectional view illustrating a closed space in a chamber formed by skin attached to the active skin contact sensor of FIG. 1. 5 is a cross-sectional view illustrating a contact force controller of an active skin contact sensor according to example embodiments. 6 is a plan view illustrating a contact detector of an active skin contact sensor according to example embodiments.

1 to 6, the active skin contact sensor 10 is provided on the surface of the thin film structure 100, the thin film structure 100, and the contact force adjusting units 200 for adjusting the contact force with the skin, and the skin It may include a sensor for measuring the state of.

In example embodiments, the thin film structure 100 may include a substrate 110 having at least one opening 112, and a support layer 120 and a contact layer 130 sequentially stacked on the substrate 110. It may include. For example, the thin film structure may include a flexible material that can be modified according to the skin shape. The thin film structure may be attached to a finger, palm, wrist, toe, ankle or sole. Alternatively, the thin film structure 100 may include the support layer 120 and the contact layer 130 without the substrate 110.

The thin film structure 100 may include a first region R and a second region S. FIG. The first region R may be a deformation region corresponding to the opening 112, and the second region S may be a support region corresponding to an area around the opening 112. Therefore, the first region R of the thin film structure 100 may be deformed into the opening 112 by external pressure. For example, the support region S may include first to fourth regions surrounding the deformation region R. FIG. The first and second regions may face each other and the third and fourth regions may be positioned adjacent to and opposite to the first and second regions.

In example embodiments, the contact force adjusting unit 200 may change the pressure in the concave chamber 210 and the chamber 210 to form a closed space A in contact with the skin on the surface of the contact layer 130. It may include a drive for adjusting the contact force with the skin.

The chamber 210 may have a concave shape recessed from the surface of the contact layer 130. The chamber 210 may include an opening penetrating the contact layer 130. The opening may have an open top and an open bottom. The upper end of the chamber 210 may form a closed space in contact with the skin S, and the pressure of the closed space of the chamber 210 may be changed to a negative pressure to serve as an adsorption chamber that adsorbs the skin S. . A portion of the surface of the support layer 120 may be exposed by the chamber 210.

A plurality of chambers 210 may be formed on the surface of the contact layer 130. The chambers 210 may be arranged in an array. Chambers 210 may be disposed in the first area and the second area of the support area S, respectively. The chamber 210 may have a cylindrical shape, a polygonal shape, a truncated cone shape, or a polygonal truncated cone shape. The cross section of the chamber 210 may have a circular or polygonal shape.

The driving unit may include a heater 220 for varying the temperature in the chamber 210. For example, the heater 220 may be installed on one surface of the support layer 120 exposed by the chamber 210. The heater may be heated to increase the temperature in the chamber 210.

The heater 220 is heated before the contact with the skin S to increase the temperature in the chamber 210, and after the skin S is in contact with the chamber 210 to form a closed space A, the heater 220. When OFF is turned off, the pressure in the chamber 210 decreases while the temperature of the air in the sealed space A decreases. Accordingly, as shown in FIG. 4, the contact force with the skin S may be increased.

On the contrary, after the skin S contacts the chamber 210 to form the closed space A, when the heater 220 is turned on, the pressure in the chamber 210 increases. Accordingly, by reducing the contact force with the skin (S), it is possible to easily detach the skin (S) from the thin film structure (100).

Accordingly, the contact force adjusting unit 200 may control the contact state with the skin S by using hot pneumatic pressure.

The size of the chamber, the number of the chambers, the pressure in the closed space of the chamber may be determined in consideration of the weight of the contact sensor, the contact force with the skin, and the like. In addition, the thin film structure may include a material that is easy to attach the object.

As shown in FIG. 5, in exemplary embodiments, the contact force adjusting unit 200 extends along an open upper circumference of the chamber 210 and defines a protrusion 212 protruding from the surface of the contact layer 130. It may further include. The protrusion 212 may be formed at the edge of the chamber 210 to increase the contact force with the skin.

As shown in FIG. 6, the active skin contact sensor 10 may further include a contact detector 400 for detecting whether the skin is in contact with the skin. The contact detector 400 may include a detection electrode formed around an open upper end of the chamber 210. The detection electrode may include electrode patterns spaced apart along the open upper circumference of the chamber 210.

In example embodiments, the sensor may detect at least one of the temperature, humidity, electrical conductivity, pH, elasticity, pulse wave, and chemical composition of the skin of the skin. The sensor may include a first sensor provided on the support layer 120 and a second sensor provided on the surface of the contact layer 130 to measure a skin condition.

The first sensor may be provided in the deformation region R to measure deformation of the deformation region R by external pressure. Specifically, the first sensor 300 includes a pulse wave measuring sensor 300 including a first piezoelectric electrode 300a and a second piezoelectric electrode 300b spaced apart from each other with the support layer 120 interposed therebetween in the deformation region R. ) May be included.

The support layer 120 may include an insulating material. The first and second piezoelectric electrodes 300a and 300b may be insulated and spaced apart from each other by the support layer 120. The first piezoelectric electrode 300a may be formed on the upper surface of the support layer 120, and the second piezoelectric electrode 300b may be formed on the lower surface of the support layer 120. The contact layer 130 may be formed on the first piezoelectric electrode 300a to insulate the second piezoelectric electrode 300a from the outside.

When the deformation region R of the thin film structure 100 is in contact with a local area of the skin, pressure may be applied to the thin film structure due to the pulse wave so that the thin film structure may be deformed. At this time, the intensity and frequency of the pulse wave may be measured by measuring the voltage difference between the first and second piezoelectric electrodes 300a and 300b.

The support layer 120 may have a first thickness, and the contact layer 130 may have a second thickness smaller than the first thickness. The pressure measurement range of the pulse wave measuring sensor 300 by changing the material and thickness of the support layer 120, the contact layer 130, the first and second piezoelectric electrodes 300a and 300b, and the structure of the substrate 100. , Sensitivity and the like can be changed. Therefore, the size of the pulse wave measuring sensor 300, the pressure measuring range, and the like may be changed to be suitable for an application to be used.

For example, when measuring pulse wave by detecting a change in arterial pressure, since the arterial pressure is known to be almost the same regardless of the position of the human body, it includes a pressure range of about 80 to 120 mmHg, which is known as a normal blood pressure range, and during exercise and Considering the case of hypotension, the structure and material of the device can be determined so that a pressure range of about 40 to 240 mmHg can be measured.

The second sensor may be provided on the support area S of the thin film structure 100 and may include a skin conductivity sensor 320 for measuring skin conductivity in contact with the skin.

The skin conductivity sensor 320 may include bipolar first and second measurement electrodes 320a and 320b. The first measurement electrode 320a and the second measurement electrode 320b may be formed on the support region S of the thin film structure 100. The first and second measurement electrodes 320a and 320b may be spaced apart from each other with the strain region R interposed on the contact layer 130.

In addition, the second sensor may further include a temperature measuring sensor 330 for measuring skin temperature. The temperature measuring sensor 330 may include a temperature measuring electrode formed on the support region S of the thin film structure 100.

For example, a first measuring electrode 320a may be disposed on the first area of the support area S, and a second measuring electrode 320b is disposed on the second area of the support area S. Can be. The temperature measuring electrode may be disposed on the third region of the support region S.

Skin conductivity may be a physical quantity representing an electrical change on a person's skin. When a person is stressed, the sympathetic nerves of the human autonomic nervous system are excited, and the excitation of the sympathetic nerve can activate the activity of the eccrine sweat glands. Since the eccrine glands are mainly distributed in the palms and soles of a person, measuring the activity of the sweat glands in the palms and soles of a person can indicate the degree of excitability of the sympathetic nervous system due to stress.

The first and second measuring electrodes 320a and 320b of the anode type may detect a change in the resistance of the skin surface caused by a change in skin humidity caused by the activity of the eccrine sweat glands which changes according to the excitability of the sympathetic nerve. have.

The second sensor is provided on the deformation region R of the thin film structure 100, but is not limited thereto, and the second sensor may be provided on the support area S of the thin film structure 100. In addition, when the substrate 110 is omitted, it will be understood that the position of the second sensor is not limited to a specific region.

In example embodiments, the active skin contact sensor 10 may further include a control circuit part connected to the driver and the sensor to process a control signal and a detection signal. For example, a circuit for the control circuit unit may be formed on the substrate 110 or a chipset may be mounted. In addition, a battery for applying power to the chipset may be mounted.

7 is an exploded perspective view illustrating an active skin contact sensor in accordance with example embodiments. 8 is a plan view illustrating a support layer of the active skin contact sensor of FIG. 7. 9 is a cross-sectional view illustrating a contact force adjusting unit of the active skin contact sensor of FIG. 7. The active skin contact sensor is substantially the same as or similar to the active skin contact sensor described with reference to FIG. 1 except for the configuration of the contact force adjusting unit. Accordingly, the same components are denoted by the same reference numerals, and repeated descriptions of the same components are omitted.

7 to 9, the contact force adjusting unit 200 of the active skin contact sensor 11 contacts the skin on the surface of the contact layer 130 to form a confined space A to form a concave chamber 210. And a driving unit for controlling the contact force with the skin by changing the pressure in the chamber 210. The driving unit may include a hydraulic control channel 230 for supplying a fluid into the chamber 210 to change the pressure.

For example, the hydraulic control channel 230 may include a recess formed in the surface of the support layer 120 exposed by the chamber 210. The recess may be in communication with the bottom of the chamber 210. The hydraulic control channel 230 may be connected to the hydraulic control device 234 through the connection channel 232. The hydraulic control apparatus 234 may generate a positive pressure or a negative pressure in the chamber 210 through the hydraulic control channel 230.

After the skin contacts the chamber 210 to form a closed space, the pressure in the closed space may be reduced through the hydraulic control channel 230 to increase the contact force with the skin. On the contrary, after the skin contacts the chamber 210 to form a closed space, the pressure in the closed space may be increased through the hydraulic control channel 230 to reduce the contact force with the skin. Accordingly, the contact force adjusting unit 200 may control the contact state with the skin S by using hydraulic pressure such as pneumatic pressure.

10 is a plan view illustrating a support layer of an active skin contact sensor in accordance with example embodiments. The active skin contact sensor is substantially the same as or similar to the active skin contact sensor described with reference to FIG. 1 except for the configuration of the pulse wave measuring sensor. Accordingly, the same components are denoted by the same reference numerals, and repeated descriptions of the same components are omitted.

Referring to FIG. 10, the pulse wave measuring sensor of the active skin contact sensor may include at least one piezoresistive electrode 302 provided on the support layer 120 to measure pulse wave.

For example, four piezoresistive electrodes 302 may be disposed on the support layer 120 to correspond to the boundary portion of the deformation region R. For example, as illustrated in FIG. The measurement pads 306 and the connection wires 304 may be patterned on the support layer 120. The piezoresistive electrodes 302 are respectively connected to the measurement pads 306 by the connection wires 304 so as to change the resistance of the piezoresistive electrodes 302 when the deformation region R is deformed by external pressure. It can be measured.

The piezoresistive electrodes 302 may measure the magnitude of the pressure applied by arranging the boundary portion of the deformation region R, that is, the portion where the change in mechanical stress due to the pressure change is greatest.

11 is a plan view illustrating a support layer of an active skin contact sensor in accordance with example embodiments. The active skin contact sensor is substantially the same as or similar to the active skin contact sensor described with reference to FIG. 1 except for the configuration of the pulse wave measuring sensor. Accordingly, the same components are denoted by the same reference numerals, and repeated descriptions of the same components are omitted.

Referring to FIG. 11, the pulse wave measuring sensor of the active skin contact sensor may include an optical pulse wave measuring sensor provided on the support layer 120 to measure pulse wave. The optical pulse wave measuring sensor may include a light emitting device 310 and a light receiving device 312 spaced apart from each other on the support layer 120. For example, the optical pulse wave measuring sensor may measure a pulse wave by measuring a change in magnitude of a received optical signal.

12 is a plan view illustrating an active skin contact sensor in accordance with example embodiments. The active skin contact sensor is substantially the same as or similar to the skin contact sensor described with reference to FIG. 1 except for the skin conductivity sensor. Accordingly, the same components are denoted by the same reference numerals, and repeated descriptions of the same components are omitted.

Referring to FIG. 12, the skin conductivity sensor 340 of the active skin contact sensor 12 may include a capacitive measuring electrode.

In the electrostatic capacitive measuring electrode, the dielectric constant of the dielectric between interdigital electrodes is changed according to the change of skin humidity according to the activity of eccrine sweat glands, and the capacitance is changed according to the change of dielectric constant. Skin conductivity can be measured.

13 is a plan view illustrating an active skin contact sensor in accordance with example embodiments. The active skin contact sensor is substantially the same as or similar to the skin contact sensor described with reference to FIG. 1 except for the structure of the contact force adjusting units and the arrangement of the sensors. Accordingly, the same components are denoted by the same reference numerals, and repeated descriptions of the same components are omitted.

Referring to FIG. 13, the active skin contact sensor 13 is disposed between and on both sides of the thin film structure having the first and second deformation regions R1 and R2, and the first and second deformation regions R1 and R2. And contact force adjusting units 200 for adjusting the contact force with the skin, and a sensor for measuring the condition of the skin.

The contact force adjusting units 200 are disposed on the first group of the contact force adjusting units disposed between the first and second deformation regions R1 and R2, and on both sides of the first and second deformation regions R1 and R2, respectively. And second and third groups of contact force controllers.

The sensor may include first and second pulse wave measuring sensors disposed in the first and second deformation regions R1 and R2, respectively. The first pulse wave measuring sensor may measure pulse waves in the first deformation region R1, and the second pulse wave measuring sensor may measure pulse waves in the second deformation region R2.

Therefore, as described above, the active skin contact sensor 13 may include several pulse wave measuring sensors according to the placement of blood vessels in a local region of the human body. In the case of pulse wave measurement, the pulse wave measurement on the arterial vessel is known to be able to measure the signal accurately with little distortion of the signal. Therefore, the pulse wave measuring sensors have a structure that can be accurately placed on the arterial vessel so that the pulse wave more accurately. Can be measured.

For example, when measuring pulse waves from the proporal palmar digital arteries, the arterial vessels are disposed along both sides of the finger, so that the first and second pressure measuring units are in contact with both sides of the finger, respectively. In this case, the pulse wave can be measured more accurately than the case of using a single pressure measuring unit.

As described above, the active skin contact sensor may provide a single device manufactured by using microfabrication technology to analyze a psychological and physiological state of a human.

In addition, since the skin contact sensor has a structure that can simultaneously measure three data for measuring the psychological and physiological state of the human body in the skin region of the human body at the same time, the measurement device is more accurate by minimizing the effect on the subject's emotion It is possible to measure the psychological state of human being, and to measure the pulse wave to obtain the long-term stress index and the skin conductance, which is an indicator for short-term aversive stimulus.

Accordingly, it is possible to easily and easily detect the human state / intention through data analysis on the correlation between the physiological indicators of the psychological changes of the human, including stress.

Although the above has been described with reference to the embodiments of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. It will be appreciated.

10, 11, 12, 13: Active Skin Contact Sensor
100: thin film structure 110: substrate
112: opening 120: support layer
130: contact layer 200: contact force adjusting unit
210: chamber 212: protrusion
220: heater 230: hydraulic control channel
232: connection channel 234: hydraulic control unit
300: pulse wave measurement sensor 300a, 300b: piezoelectric electrode
302: piezoresistive electrode 304: measuring pad
306: measuring pad 310: light emitting element
312: light receiving element 320, 340: skin conductivity sensor
320a, 320b: skin conductivity measuring electrode 330: temperature measuring sensor
400: contact detection unit

Claims (20)

A support layer laminated on the substrate having an opening;
A contact layer provided on the support layer and having a support region positioned to correspond to a peripheral region of the opening and a deformation region positioned to correspond to the opening and deformable with respect to the support region by an external pressure;
At least one contact force control provided on a surface of the contact layer of the support region and having a concave chamber contacting the skin to form a closed space, and a driving unit for changing the pressure in the chamber to adjust the contact force with the skin part; And
A sensor for measuring the condition of the skin,
The sensor is an active skin contact sensor that is provided in the deformation area for measuring a pulse wave. The active skin contact sensor of claim 1, wherein the driving unit comprises a heater for varying a temperature in the chamber. The active skin contact sensor of claim 1, wherein the driving unit includes a hydraulic control channel for supplying a fluid into the chamber to change pressure. The active skin contact sensor of claim 1, wherein the contact force adjusting portion further includes a protrusion extending along an open upper circumference of the chamber and protruding from a contact layer surface of the support area. The active skin contact sensor of claim 1, further comprising a contact detector configured to include a detection electrode formed around an open upper end of the chamber, and to detect contact with the skin. The active skin contact sensor of claim 5, wherein the detection electrode comprises electrode patterns spaced apart along an open top circumference of the chamber. The active skin contact sensor of claim 1, wherein the sensor detects at least one of temperature, humidity, electrical conductivity, pH, elasticity, pulse wave, and chemical composition of the skin surface. The active skin contact sensor of claim 1, wherein the sensor further comprises a second sensor provided on a surface of the contact layer of the support area to measure skin condition. The active skin contact sensor of claim 1, wherein the chamber is arranged in a plurality of arrays. The active skin contact sensor of claim 1, further comprising a control circuit connected to the driver and the sensor to process a control signal and a detection signal. A thin film structure having a deformation area deformable with respect to the support area by a support area and external pressure, the thin film structure in contact with the skin;
At least one contact force control unit provided on a surface of the thin film structure of the support region and having an adsorption chamber configured to open at an upper end thereof and a driving unit for controlling a contact force with the skin by changing a pressure in the adsorption chamber; And
It includes a sensor for measuring the condition of the skin,
The sensor is an active skin contact sensor that is provided in the deformation area for measuring a pulse wave. The active skin contact sensor as claimed in claim 11, wherein the driving unit changes the pressure in the adsorption chamber in a thermo pneumatic or pneumatic manner. 13. The active skin contact sensor as claimed in claim 12, wherein the drive unit comprises a heater for varying the temperature in the adsorption chamber. The active skin contact sensor as claimed in claim 12, wherein the driving unit includes a hydraulic control channel for supplying a fluid into the adsorption chamber to vary the pressure. 12. The active skin contact sensor of claim 11 wherein the contact force adjustment portion further comprises a protrusion extending along an open upper circumference of the adsorption chamber and protruding from a surface of the thin film structure of the support region. 12. The active skin contact sensor as claimed in claim 11, further comprising a contact detector formed around the open top of the adsorption chamber and detecting whether the skin is in contact with the skin. The active skin contact sensor of claim 11, wherein the sensor detects at least one of temperature, humidity, electrical conductivity, pH, elasticity, pulse wave, and chemical composition of the skin surface of the skin. 12. The active skin contact sensor of claim 11 wherein the sensor further comprises a second sensor for measuring skin condition. The active skin contact sensor of claim 11, wherein the adsorption chamber is arranged in a plurality of arrays. 12. The active skin contact sensor according to claim 11, further comprising a control circuit portion connected to the driver and the sensor for processing a control signal and a detection signal.

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