KR101274303B1 - Skin condition inpection device for smartphone - Google Patents

Abstract

PURPOSE: A skin condition measurement device for a smart phone is provided to measure skin hydration at any time and any place by using a USB host function. CONSTITUTION: An imaging unit(140) has a camera module and a light source. An MCU(Main Control Unit)(150) controls at least one among an oil-water component measuring unit(110), a body temperature measuring unit(120), a pH measuring unit(130), and the imaging unit. A USB hub controller(160) is connected through a USB mode to a smart phone(10). The USB hub controller transmits a measured value of skin condition to a smart phone. The USB hub controller delivers a control signal to the MCU or the imaging unit. [Reference numerals] (10) Smart phone; (110) Oil-water component measuring unit; (120) Body temperature measuring unit; (130) pH measuring unit; (140) Imaging unit; (160) USB hub controller; (AA) Skin condition measuring unit

Description

Skin condition measuring device for smartphone {SKIN CONDITION INPECTION DEVICE FOR SMARTPHONE}

The present invention belongs to the field of smartphone peripheral technology.

As interest in skin care has increased, many users have confirmed the condition of the skin through various paths such as skin care rooms, massage shops, dermatology clinics, and used the appropriate cosmetics or medicines to manage the skin.

People's skin conditions vary greatly depending on the season, and since individual variations vary, accurate diagnosis is of paramount importance for proper prescription.

For the diagnosis of skin conditions, dermatologists and clinics are equipped with specialized medical equipment, enabling diagnostic activities such as taking enlarged photographs of pores.

However, due to the increased interest in skin care, the user's level of knowledge about the skin has also increased, and users want to know more about the condition of their skin or the change of the condition of the skin.

Nevertheless, it is very cumbersome to simply visit the clinic on a regular basis to monitor the condition of the skin and to find out the change in the use of cosmetics.

Therefore, it is necessary to prepare a method for allowing users to easily check and diagnose their skin condition while carrying.

[Document 1] Korean Patent Publication No. 10-2009-0041384 "Skin Inspection Camera" [Patent 2] Republic of Korea Patent No. 10-1011029 "Digital Camera for Ear Skin Observation"

The present invention has been made to solve the problems of the prior art, is connected by a smart phone and a USB method, the amount of water for the skin of various locations, such as the face, neck, body of the human body by the user operation using the smartphone, An object of the present invention is to provide a skin condition measuring device for a smartphone, which measures the amount of oil (sebum), acidity (pH), and skin temperature, and at the same time, magnifies and photographs the skin of a corresponding location with a micro camera.

In order to achieve the above object, the skin condition measuring apparatus for a smart phone according to the present invention includes a camera module 141 for image capturing; and a light source 142 dimming toward the front of the camera module 141; );

Oil and water measuring means (110); Body temperature measuring means 120; pH measuring means 130; Or MCU 150 for controlling one or more of the photographing means 140; And

The smart phone 10 is connected by the USB method, and transmits the image taken by the photographing means 140 and the skin condition measurement value obtained from the MCU 150 to the smart phone 10, the smart And a USB hub controller 160 for transmitting a control signal from the phone 10 to the MCU 150 or the photographing means 140.

Oil and moisture measuring means (110) for detecting a voltage drop occurring at both sides of the measuring electrode (112) when the user contacts the skin; Body temperature measuring means 120 for detecting a temperature of a measuring point; PH measuring means 130 for detecting a potential difference generated between the comparison electrode 131 and the glass film electrode 132 when the user's skin contact; One or more of them,

When the USB hub controller 160 is electrically connected to the smartphone 10 to apply a control signal from the smartphone 10, the light source 142 dims forward of the camera module 141. The camera module 141 captures an image,

The MCU 150 calculates the oil and moisture state of the user's skin from the voltage drop value detected by the oil content measuring unit 110, or calculates the pH value of the user's skin from the potential difference detected by the pH measuring unit 130, or Or, the temperature of the measuring point from the temperature measuring means 120 is provided.

On the other hand, one side of the skin condition measuring device for a smart phone according to the present invention is a front portion 171 formed at one end; And a camera mounting space part 172 which is opened inward from the center of the front part 171 or is recessed in a predetermined length.

It is mounted so that the measurement electrode plate 112 is exposed on the front portion 171 of the housing 170, the oil and water measuring means 110 for detecting a voltage drop generated on both sides of the measurement electrode plate 112 when the user's skin contact;

A body temperature measuring means (120) mounted to be exposed to the front portion (171) of the housing (170) and detecting a user body temperature when the skin of the user contacts the skin;

A camera module 141 for capturing an image mounted in the camera mounting space 172 toward the front portion 171;

A light source 142 provided at one side of the camera module 141 and dimming toward the front part 171;

A MCU (150) provided inside the housing (170) for controlling the oil and water measuring means (110), the body temperature measuring means (120), the camera module (141), or the light source (142);

A socket 161 for connecting a USB cable exposed to one side of the housing 170; provided with a USB cable connected to the socket 161 by a smart phone 10 and a USB method, and the camera The image captured by the module 141 and the skin condition measurement value acquired from the MCU 150 are transmitted to the smartphone 10, and a control signal from the smartphone 10 is transmitted to the MCU 150 or the like. And a USB hub controller 160 for transferring to the camera module 141.

On the other hand, the other side of the skin condition measuring device for a smart phone according to the present invention is the front portion 171 formed at one end; A rear portion 172 formed at the other end; A camera mounting space part 173 opened inward from the center of the rear part 172 or recessed in a predetermined length; a housing 170 having a shape extending in one direction;

It is mounted so that the measurement electrode plate 112 is exposed on the front portion 171 of the housing 170, the oil and water measuring means 110 for detecting a voltage drop generated on both sides of the measurement electrode plate 112 when the user's skin contact;

A body temperature measuring means (120) mounted to be exposed to the front portion (171) of the housing (170) and detecting a user body temperature when the skin of the user contacts the skin;

The inside of the housing 170, mounted along the longitudinal direction of the housing 170, the glass electrode film 133 is provided to be exposed to the front portion 171 of the housing 170, when the user's skin contact PH measuring means 130 for detecting a potential difference generated between the comparison electrode 131 and the glass film electrode 132;

A camera module 141 for capturing an image mounted in the camera mounting space 173 toward the rear portion 172;

A light source 142 provided at one side of the camera module 141 and dimming toward the rear portion 172;

MCU 150 which is provided inside the housing 170 and controls the oil and water measuring means 110, the body temperature measuring means 120, the pH measuring means 130, the camera module 141, or the light source 142. ;

A socket 161 for connecting a USB cable exposed to one side of the housing 170; provided with a USB cable connected to the socket 161 by a smart phone 10 and a USB method, and the camera The image captured by the module 141 and the skin condition measurement value acquired from the MCU 150 are transmitted to the smartphone 10, and a control signal from the smartphone 10 is transmitted to the MCU 150 or the like. And a USB hub controller 160 for transferring to the camera module 141.

According to the present invention, users can easily measure the amount of moisture, oil (sebum), acidity (pH), and skin temperature of their skin anytime, anywhere, without visiting a facility such as a clinic equipped with specialized equipment. At the same time it is possible to visually check the skin condition of the location.

On the other hand, by using the USB host function, users can simply install the app to control the skin condition measuring device for a smartphone according to the present invention by simply connecting with the smartphone.

In particular, it is compact and can be carried with a smartphone and can easily diagnose not only the place and time but also the skin condition of itself and others.

1 is a view for explaining the structure of the skin condition measuring device for a smart phone according to an embodiment of the present invention,
2 is a view for explaining the structure of the skin condition measuring apparatus for a smartphone according to this embodiment of the present invention,
3 is a view illustrating a state in which the skin condition measuring device for a smart phone according to the present invention is connected to a smart phone,
4 is a view illustrating a state of measuring the state of the skin using the skin condition measuring device for smart phones according to the present invention,
Figure 5 is a block diagram illustrating the connection between the components of the skin condition measuring apparatus for smartphones according to the present invention,
6 is a block diagram illustrating the configuration of the oil and water measurement means.
7 is a view for explaining a signal change in the process of obtaining the impedance from the voltage drop generated in the measurement electrode,
8 is a block diagram illustrating a configuration of a pH measuring means,
9 is a flowchart illustrating the operation of the skin condition measuring apparatus for smartphones according to the present invention.

Hereinafter, with reference to the preferred embodiments of the present invention and the accompanying drawings will be described in detail the present invention. In order to clarify the present invention, contents which are not related to the configuration of the present invention will be omitted, and the same reference numerals are used for the same components.

On the other hand, when an element is referred to as being "comprising" another element in the description of the invention or in the claims, it is not interpreted as being limited to only that element, Elements may be further included.

Also, in the description of the invention or the claims, the components named as "means", "parts", "modules", "blocks" refer to units that process at least one function or operation, Each of which may be implemented by software or hardware, or a combination thereof.

First, with reference to FIGS. 1 and 2 will be briefly described the shape and components of the skin condition measuring apparatus 100 for a smartphone according to the present invention.

1 is a view for explaining the structure of the smart phone skin condition measuring apparatus according to an embodiment of the present invention, Figure 2 is a view for explaining the structure of the smart phone skin condition measuring apparatus according to an embodiment of the present invention.

First, the skin condition measuring apparatus 100 for a smartphone according to the present invention shown in FIG. 1 includes a housing 170 made of synthetic resin or metal.

The housing 170 preferably has a cylindrical shape elongated in one direction as illustrated in FIG. 1.

At this time, the oil content measuring means 110 and the body temperature measuring means 120 is exposed to the front portion 171 of one end thereof.

On the other hand, the central portion of the front portion 171 is opened or recessed a predetermined length in the inward direction.

Accordingly, the camera mounting space 173, which is a space formed inside the housing 170, is provided with a camera module 141 and a light source 142.

On the other hand, the camera module 141 may use a conventional imaging device. For example, a 5 megapixel CMOS camera module or the like can be used.

In this case, it is important to adjust the distance between the skin of the user and the camera module 141 to match the focal length of the camera module 141 in actual use as illustrated in FIG. 4.

In addition, the light is sufficiently shielded from being affected by external lighting, and an independent self-illumination by the light source 142 should be used.

The camera mounting space unit 173 blocks light from outside.

In addition, by matching the distance between the front portion 171 and the camera module 141 with the focal length of the camera module 141, the skin of the user, which is a photographing target part in the actual use of the user, is applied to the focal length of the camera module 141. Make sure you come in correctly.

On the other hand, a printed circuit board is stacked below the camera module 141 inside the housing 170, and a socket 161 for connecting a USB cable is provided at the other end of the housing 170.

Meanwhile, the printed board is provided with the MCU 150 and the USB hub controller 160.

The oil content measuring unit 110 includes a measuring electrode plate 112 exposed to the front portion 171 of the housing 170.

On the other hand, the oil and water measuring means 110 detects the voltage drop occurring on both sides of the measuring electrode plate 112 when the user's skin contact.

The body temperature measuring means 120 is provided such that the sensor part is exposed to the front portion 171 of the housing 170. On the other hand, the body temperature measuring means 120 detects the user's body temperature when the user's skin contact.

The camera module 141 is a means for photographing a user's skin and is mounted in the camera mounting space 173 toward the front portion 171.

On the other hand, the light source 142 is further provided to one side of the camera module 141.

The light source 142 is preferably provided on the side surface so as not to obscure the angle of view of the camera module 141, and ensures sufficient illuminance when the camera module 141 is photographed by dimming toward the front part 171.

MCU 150 is provided in the housing 170, and controls the oil and water measuring means 110, the body temperature measuring means 120, the camera module 141 or the light source 142.

On the other hand, the USB hub controller 160 is electrically connected to the USB socket 161, and is connected to the smart phone 10 and the USB method by a USB cable connected through the socket 161.

The USB hub controller 160 applies a control signal transmitted from the smartphone 10 to the MCU 150 or the camera module 141, and conversely, an image captured by the camera module 141 and the MCU ( The skin condition measurement value obtained from 150 is transmitted to the smart phone 10.

The user connects the smartphone 10 and the socket 161 using a separate USB cable as shown in FIG. That is, the skin condition measuring apparatus 100 for smartphones according to the present invention and the smartphone 10 may be connected by using a cable for the smartphone 10 that is used universally.

As described above, the user executes a dedicated app of the smartphone 10 in a state in which the skin condition measuring device 100 for smartphone according to the present invention and the smartphone 10 are connected to the skin condition measuring device 100 for a smartphone. Can be controlled.

4 illustrates a state in which the user measures the skin condition of the user using the skin condition measuring apparatus 100 for a smartphone according to the present invention.

As illustrated in FIG. 4, the user is holding the smartphone 10 with one hand, and holding the skin condition measuring device 100 for the smartphone according to the present invention with the other hand to measure the front part 171. Contact with the skin position.

And, by operating the smart phone 10 to drive the skin condition measuring device for smartphone 100 according to the present invention.

Accordingly, the apparatus 100 for measuring skin condition of a smartphone according to the present invention measures the oil distribution state and body temperature of the user's skin at the same time as the user's skin is enlarged and photographed as described below.

That is, in one operation, the skin's oil and moisture status are measured, as well as an enlarged photograph of the skin tissue.

Since the oil content measuring unit 110 and the body temperature measuring unit 120 are exposed to the front portion 171 directly in contact with the user's skin, the measurement of the oil content and the body temperature may be performed by only one operation.

On the other hand, as the front part 171 contacts the skin of the user, the light from the outside is shielded by the camera mounting space 173.

In this state, as the control signal is applied from the smart phone 10 to the skin condition measuring device 100 for the smart phone, the light source 142 irradiates light toward the front part 171, and the camera module 141 of the user Shoot the skin.

The photographed image, the image and the measured water content and body temperature value are transmitted to the smartphone 10 via a USB cable.

On the other hand, the smart phone 10 transmits the collected information to a server (not shown), by processing in a predetermined manner to enable the user to know the skin condition at a glance, as well as changes in the skin condition of the user, skin condition It will be able to provide information such as how to improve.

This embodiment of the present invention shown in Figure 2, unlike the skin condition measuring apparatus 100 for a smartphone shown in Figure 1 is further provided with a pH measuring means 130.

As described below, the pH measuring unit 130 is provided with electrodes at both ends and has a vertically long shape, and also has a relatively large volume so that the size of the product is increased in the same direction as the camera module 141. It is difficult to design a sufficiently secure angle of view of the camera module 141.

For this reason, in this embodiment shown in Fig. 2, the camera module 141 is disposed in the opposite direction.

On the other hand, the pH measuring means 130 is mounted in the housing 170, along the longitudinal direction of the housing 170, the glass electrode film 133 is exposed to the front portion 171 of the housing 170. It is provided to be.

As illustrated in FIG. 4, when the user's skin contacts the glass electrode film 133, the pH measuring unit 130 detects a potential difference generated between the comparison electrode 131 and the glass film electrode 132 as described below. do.

The measuring electrode plate 112 and the body temperature measuring unit 120 of the oil and moisture measuring unit 110 are also mounted to be exposed to the front portion 171 of the housing 170 as shown in FIG. 2.

On the other hand, as shown in Figure 2, the camera mounting space portion 173 is formed by opening inward from the center of the back portion 172 formed at the other end of the housing 170 or recessed in a predetermined length.

The camera module 141 is mounted in the camera mounting space 173 toward the rear portion 172, and the light source 142 is also mounted in the camera mounting space 173 toward one side of the camera module 141. .

 MCU 150 is provided on the printed board provided in the housing 170, the oil and water measuring means 110, the body temperature measuring means 120, pH measuring means 130, the camera module 141 or the light source Control 142.

According to this embodiment of the present invention, the user is in contact with the skin of the front portion 171 of the housing 170 while holding the skin condition measuring device 100 for smart phone as shown in FIG. It may be measured, and on the contrary, the back portion 172 of the housing 170 may be in contact with the skin to take an enlarged photograph of the skin.

Hereinafter, with reference to Figures 5 to 8 will be described in detail for each component of the skin condition measuring device 100 for a smartphone of the present invention having such a shape.

5 is a block diagram illustrating the connection relationship between the components of the skin condition measuring apparatus for a smart phone according to the present invention.

6 is a block diagram illustrating a configuration of the oil and water measuring means, and FIG. 7 is a diagram illustrating a signal change in the process of obtaining impedance from a voltage drop generated in the measuring electrode.

8 is a block diagram illustrating the configuration of the pH measuring means.

The components of the smart phone skin condition measuring apparatus 100 of the present invention can be largely divided into a sensing function, a photographing function, a signal processing function, and an information transmission function in terms of functions.

The oil and water measuring means 110, the body temperature measuring means 120, and the pH measuring means 130 correspond to a sensor, and the camera module 141 and the light source 142 serve as a photographing function.

In addition, the MCU 150 performs a signal processing function and the USB hub controller 160 performs an information transmission function.

On the other hand, the power required for the skin condition measuring apparatus 100 for a smartphone may use the power of the smartphone (10).

Let's look at the sensors one by one.

First, the oil and moisture measuring unit 110 detects a voltage drop occurring at both sides of the measuring electrode 112 when the user contacts the skin.

The oil and moisture measuring means 110 measures the oil state and the water state of the skin through the electrical resistance analysis of the living body as described below.

As shown in FIG. 6, the oil / water measurement unit 110 is connected to the harmonic wave generator 111 generating the harmonic wave and the harmonic wave generating terminal of the harmonic wave generator 111, but having a first fixed resistance 113. A pair of opposing measuring electrode 112 grounded via a), amplifying element 114 for amplifying the voltage drop generated at both ends of the measuring electrode plate 112 and before and after the first fixed resistance. It includes;

As the MCU 150 designates the generation frequency to the harmonic generator 111, the harmonic generator 111 generates a harmonic wave. On the other hand, the harmonic wave generation terminal of the harmonic wave generator 111 is connected to the measuring electrode plate 112, and is then grounded through the first fixed resistor 113.

The measuring electrode plate 112 may be made of a metal having high conductivity, and preferably, a copper plate with gold plating may be used.

As the user's skin touches the measuring electrode plate 112, a voltage drop corresponding to the impedance Z of the measurement target is generated at both of the electrode plates of the measuring electrode plate 112.

The voltage drop also occurs on both sides of the first fixed resistor 113.

The amplifier 114 amplifies the difference value of the voltage and inputs it to the A / D converter of the MCU 150.

Since the amplitude of the signal is obtained from the amplifier exit waveform, the power of the amplifier 114 may be set to + 5V and GND, and the amplification degree may be set to 1 in consideration of the A / D maximum inlet voltage of the MCU 150.

On the other hand, the equation for calculating the impedance from the voltage drop value obtained through the measurement electrode plate 112 and to obtain the moisture and oil-containing properties of the skin is as follows.

| Z | = (| Uz | / | UR |) * R1

θ (ω) = arccos ((| U | 2- | θ (ω) | 2- | Ur | 2) / (2 * | Ur | * | Uz |))

However, Z means the local impedance of the skin tissue in the measuring electrode plate 112, θ (ω) is a frequency characteristic function of Z.

On the other hand, Uz means voltage characteristics at the source signal side electrode plate, and Ur means voltage characteristics at the reference resistance side.

As shown in FIG. 7, the waveform of the voltage characteristic Uz at the measuring electrode plate 112 and the voltage characteristic Ur at the stage of the first fixed resistor 113 according to the application of the harmonic wave can be confirmed.

When [theta] ([omega]) is obtained by using the above function, water and oil inclusion characteristics are obtained based on the bioresistance and water / oil index mapping tables.

The MCU 150 performs this process. Specifically, the MCU 150 measures the value corresponding to the voltage of the two signals through the signal conversion circuit, so that the absolute value of the local impedance | Z | Is obtained, and θ (ω) is obtained and then applied to the corresponding table shown in Table 1.

Table 1 is a correspondence table showing the impedance, water and oil content.

The MCU 150 stores the corresponding table as shown in Table 1 in advance and substitutes the calculated value therein to determine the moisture and oil content of the skin.

impedance moisture Oil > = 1.29MΩ -5 -4 550 kΩ to 1.28 MΩ -4 -4 330 ~ 550 KΩ -3 -4 230 ~ 320 KΩ -2 -2 155 ~ 220 KΩ -One 0 91 to 154 KΩ 0 One 46 to 89 KΩ 0 One 22 to 45 KΩ One 5 7.3 ~ 21 KΩ 2 5 3.1 to 7.2 KΩ 3 5 1.9 to 3.0 KΩ 4 4 1.4 to 1.8 KΩ 5 3 <= 1.3 KΩ 5 2

On the other hand, the body temperature measuring means 120 is a means for detecting the temperature of the measuring point, it may use a ready-made temperature sensor such as DS18B20.

The body temperature measuring unit 120 provides the measured temperature value to the MCU 150.

For example, in the case of a ready-made temperature sensor such as the DS18B20, a temperature value is converted into a 12-bit number within 750ms and output.

On the other hand, the pH measuring means 130 detects the potential difference generated between the comparison electrode 131 and the glass film electrode 132 when the user's skin contact.

pH measuring means 130 has a vertical shape as shown in Figure 2, the electrolyte is filled therein.

Meanwhile, as shown in FIG. 8, the pH measuring unit 130 has a silver-silver chloride (AgCl / Ag) reference electrode 131 at one end thereof and a silver-silver chloride (2) at the other end of the reference electrode 131. AgCl / Ag) glass electrodes 132 are provided, respectively.

The glass electrode film 133 is further provided adjacent to the other end of the reference electrode 131, that is, adjacent to the glass electrode 132.

Meanwhile, the pH measuring unit 130 further includes a buffer amplifier stage 134 and a level conversion stage 135.

The buffer amplifier stage 134 amplifies the potential difference generated between the reference electrode 131 and the glass electrode 132 when the user's skin contacts the glass electrode film 133.

The level converting stage 135 converts the output voltage from the buffer amplifier stage 134 into the A / D converter input voltage range of the MCU 150.

Both the comparison electrode 131 and the glass electrode 132 may use an Ag / AgCI electrode.

When the user's skin touches the glass electrode film 133, a potential difference occurs between the comparison electrode 131 and the glass electrode 132.

The internal resistance of the glass electrode film 133 is 106-109 kPa normally.

For this reason, the operational amplifier used in the buffer amplifier stage 134 should ensure high inlet resistance and low inlet current, and minimize leakage through protection and shielding of the amplifier inlet.

The buffer amplifier stage 134 and the level converting stage 135 convert the voltage (-several hundred mV to several hundred mV) output from the glass electrode 132 having a high internal resistance to the A / D converter input range of the MCU 150 (0 V to Amplify and level convert to 2.4V).

Since the time to reach the equilibrium state in the measurement of pH is more than a few seconds, the bandwidth of the amplification circuit is sufficient 1Hz.

Meanwhile, the MCU 150 converts an input value into a binary value through an A / D converter, and converts the binary value into a pH value using a pH interpolation method using two points.

At this time, since an error occurs between the pH measured by the pH interpolation method and the actual pH, the MCU 150 improves accuracy through correction according to the environmental temperature.

Table 2 below is a temperature compensation correspondence table showing the relationship between the potential difference of the electrode and pH value at T = 25 ° C.

The MCU 150 stores the correspondence table in advance and then applies a signal received from the level conversion stage 135 to the correspondence table to determine a pH value corresponding to the potential difference and perform temperature compensation.

Potential difference (mV) Rated pH Potential difference (mV) Rated pH 414.12 0.00 -414.12 14.00 354.96 1.00 -354.96 13.00 295.80 2.00 -295.80 12.00 236.64 3.00 -236.64 11.00 177.48 4.00 -177.48 10.00 118.32 5.00 -118.32 9.00 59.16 6.00 -59.16 8.00 0.00 7.00 0.00 7.00

By the pH measuring means 130 and MCU 150 having such a configuration, it is possible to detect 0pH to 12pH at a temperature of 20 ℃ to 40 ℃.

On the other hand, with reference to Figure 9 will be described the operation of the skin condition measuring device for smart phone according to the present invention.

9 is a flowchart illustrating the operation of the skin condition measuring apparatus for smartphones according to the present invention.

As shown in FIG. 9, first, the user connects the skin condition measuring apparatus 100 for a smart phone according to the present invention to a smart phone 10 using a USB cable as shown in FIG. When turned on and driven, the skin condition measuring apparatus 100 for a smartphone starts initialization.

In the initialization process, the smart phone skin condition measuring apparatus 100 checks the state of each sensor and camera provided to check whether it is normal.

That is, the state of the oil and water measuring means 110, the body temperature measuring means 120, the pH measuring means 130 and the photographing means 140 is inspected.

In this case, an error occurs and an exception is processed.

On the other hand, when all sensors and cameras operate normally, the skin condition measuring apparatus 100 for a smartphone waits for a control signal from the smartphone 10.

When the user applies the control signal by operating the smartphone 10 while holding the skin condition measuring device 100 for smartphone according to the present invention in one hand while touching the skin,

The skin condition measuring apparatus 100 for a smartphone controls the light source 142 to irradiate light, and controls the camera module 141 to photograph.

And, through the oil and water measuring means 110, body temperature measuring means 120, pH measuring means 130 to measure the oil and moisture state, body temperature and pH of the skin, respectively.

The process of MCU 150 for determining the oil and moisture state and obtaining the pH is as described above.

When the photographing and measurement is completed, the skin condition measuring apparatus 100 for the smartphone transmits the measured oil and moisture state, body temperature and pH, and the photographed image and the image to the smartphone 10.

Meanwhile, the method for measuring skin condition of a smart phone according to the present invention as described above may be implemented as a computer readable code and stored in a computer readable recording medium.

The computer-readable recording medium may include any type of medium in which data readable by a computer system is stored. Examples of the medium include a DVD-ROM, a CD-ROM, a hard disk, a USB memory, a flash memory And the like.

On the other hand, the expression contained in the recording medium encompasses both the case of being recorded on the recording medium in large quantities and distributed in a package form as well as being provided through the network in the form of data packets and stored in the recording medium.

On the other hand, the expression "smartphone" is used in the above, but the user can be connected to the server without being limited by the space while carrying, and if it can be connected to the skin condition measuring device for smart phones according to the present invention by the USB communication method It is not limited to hardware called "smartphones".

In other words, it should be interpreted as a concept that includes both a tablet and a personal data assistant (PDA) in addition to a mobile phone equipped with IOS or Android OS.

While the present invention has been described with reference to the accompanying drawings and embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. . Accordingly, the scope of the present invention should be determined only by the technical idea of the appended claims, and is not limited to the above embodiments.

The present invention can be applied to the field of smartphone peripheral technology.

100: skin condition measuring device
110: water content measuring means
120: body temperature measuring means
130: pH measuring means
140: recording means
141: Camera Module
142: light source
150: MCU
160: USB hub controller
161: USB socket
170: housing
171: front
172: rear part
173: camera mounting space
10: Smartphone

Claims (7)

delete A photographing means (140) having a camera module (141) for photographing the image; and a light source (142) dimming forward of the camera module (141);
Oil and water measuring means (110); Body temperature measuring means 120; pH measuring means 130; Or MCU 150 for controlling one or more of the photographing means 140; And
The smart phone 10 is connected by the USB method, and transmits the image taken by the photographing means 140 and the skin condition measurement value obtained from the MCU 150 to the smart phone 10, the smart And a USB hub controller 160 for transmitting a control signal from the phone 10 to the MCU 150 or the photographing means 140.
Oil and moisture measuring means (110) for detecting a voltage drop occurring at both sides of the measuring electrode (112) when the user contacts the skin; Body temperature measuring means 120 for detecting a temperature of a measuring point; PH measuring means 130 for detecting a potential difference generated between the comparison electrode 131 and the glass film electrode 132 when the user's skin contact; One or more of them,
When the USB hub controller 160 is electrically connected to the smartphone 10 to apply a control signal from the smartphone 10, the light source 142 dims forward of the camera module 141. The camera module 141 captures an image,
The MCU 150 calculates the oil and moisture state of the user's skin from the voltage drop value detected by the oil content measuring unit 110, or calculates the pH value of the user's skin from the potential difference detected by the pH measuring unit 130, or , Or receive the temperature of the measuring point from the body temperature measuring means 120,
The oil and water measuring means 110 is a harmonic wave generator 111 for generating a harmonic wave;
A pair of opposing measuring electrodes 112 connected to the harmonic wave generating terminal of the harmonic wave generator 111 and grounded through the first fixed resistor 113; And
And amplifying device (114) for amplifying the voltage drop occurring at both ends of the measuring electrode plate (112) and the voltage drop occurring before and after the first fixed resistor and outputting the amplified element (114) to the MCU (150). Skin condition measuring device. delete A photographing means (140) having a camera module (141) for photographing the image; and a light source (142) dimming forward of the camera module (141);
Oil and water measuring means (110); Body temperature measuring means 120; pH measuring means 130; Or MCU 150 for controlling one or more of the photographing means 140; And
The smart phone 10 is connected by the USB method, and transmits the image taken by the photographing means 140 and the skin condition measurement value obtained from the MCU 150 to the smart phone 10, the smart And a USB hub controller 160 for transmitting a control signal from the phone 10 to the MCU 150 or the photographing means 140.
Oil and moisture measuring means (110) for detecting a voltage drop occurring at both sides of the measuring electrode (112) when the user contacts the skin; Body temperature measuring means 120 for detecting a temperature of a measuring point; PH measuring means 130 for detecting a potential difference generated between the comparison electrode 131 and the glass film electrode 132 when the user's skin contact; One or more of them,
When the USB hub controller 160 is electrically connected to the smartphone 10 to apply a control signal from the smartphone 10, the light source 142 dims forward of the camera module 141. The camera module 141 captures an image,
The MCU 150 calculates the oil and moisture state of the user's skin from the voltage drop value detected by the oil content measuring unit 110, or calculates the pH value of the user's skin from the potential difference detected by the pH measuring unit 130, or , Or receive the temperature of the measuring point from the body temperature measuring means 120,
The pH measuring unit 130 is filled with an electrolyte solution, silver-silver chloride (AgCl / Ag) reference electrode 131 at one end;
A silver-silver chloride (AgCl / Ag) glass electrode 132 at the other end of the reference electrode 131;
A glass electrode film 133 disposed on the other end of the reference electrode 131 and spaced apart from the glass electrode 132 by a predetermined distance;
A buffer amplifier stage 134 for amplifying a potential difference generated between the reference electrode 131 and the glass electrode 132 when the user's skin contacts the glass electrode film 133; And
And a level conversion stage 135 for converting the output voltage from the buffer amplifier stage 134 into the input voltage range of the second A / D converter 136 and outputting it to the MCU 150. Skin condition measuring device. The method of claim 4, wherein
The MCU (150) is a skin condition measuring device for a smartphone, characterized in that for determining the pH value corresponding to the potential difference by applying the signal received from the level conversion stage 135 to the pre-stored temperature compensation correspondence table. A front portion 171 formed at one end; And a camera mounting space part 172 which is opened inward from the center of the front part 171 or is recessed in a predetermined length.
It is mounted so that the measurement electrode plate 112 is exposed on the front portion 171 of the housing 170, the oil and water measuring means 110 for detecting a voltage drop generated on both sides of the measurement electrode plate 112 when the user's skin contact;
A body temperature measuring means (120) mounted to be exposed to the front portion (171) of the housing (170) and detecting a user body temperature when the skin of the user contacts the skin;
A camera module 141 for capturing an image mounted in the camera mounting space 172 toward the front portion 171;
A light source 142 provided at one side of the camera module 141 and dimming toward the front part 171;
A MCU (150) provided inside the housing (170) for controlling the oil and water measuring means (110), the body temperature measuring means (120), the camera module (141), or the light source (142);
A socket 161 for connecting a USB cable exposed to one side of the housing 170; provided with a USB cable connected to the socket 161 by a smart phone 10 and a USB method, and the camera The image captured by the module 141 and the skin condition measurement value acquired from the MCU 150 are transmitted to the smartphone 10, and a control signal from the smartphone 10 is transmitted to the MCU 150 or the like. Skin condition measuring device for a smartphone, comprising: a USB hub controller (160) for transferring to the camera module (141). A front portion 171 formed at one end; A rear portion 172 formed at the other end; A camera mounting space part 173 opened inward from the center of the rear part 172 or recessed in a predetermined length; a housing 170 having a shape extending in one direction;
It is mounted so that the measurement electrode plate 112 is exposed on the front portion 171 of the housing 170, the oil and water measuring means 110 for detecting a voltage drop generated on both sides of the measurement electrode plate 112 when the user's skin contact;
A body temperature measuring means (120) mounted to be exposed to the front portion (171) of the housing (170) and detecting a user body temperature when the skin of the user contacts the skin;
The inside of the housing 170, mounted along the longitudinal direction of the housing 170, the glass electrode film 133 is provided to be exposed to the front portion 171 of the housing 170, when the user's skin contact PH measuring means 130 for detecting a potential difference generated between the comparison electrode 131 and the glass film electrode 132;
A camera module 141 for capturing an image mounted in the camera mounting space 173 toward the rear portion 172;
A light source 142 provided at one side of the camera module 141 and dimming toward the rear portion 172;
MCU 150 which is provided inside the housing 170 and controls the oil and water measuring means 110, the body temperature measuring means 120, the pH measuring means 130, the camera module 141, or the light source 142. ;
A socket 161 for connecting a USB cable exposed to one side of the housing 170; provided with a USB cable connected to the socket 161 by a smart phone 10 and a USB method, and the camera The image captured by the module 141 and the skin condition measurement value acquired from the MCU 150 are transmitted to the smartphone 10, and a control signal from the smartphone 10 is transmitted to the MCU 150 or the like. Skin condition measuring device for a smartphone, comprising: a USB hub controller (160) for transferring to the camera module (141).

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