JP2017003381A - Measurement device and measurement system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately measure an influence exerted on the dermis (skin) by ultraviolet light.SOLUTION: The measurement device comprises: a first ultraviolet light sensor for detecting a first ultraviolet light amount included in light from a light source; and a second ultraviolet light sensor for detecting a second ultraviolet light amount included in reflected light from the skin.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a measuring apparatus and a measuring system, and for example, relates to a measuring apparatus and a measuring system capable of measuring the influence of ultraviolet rays contained in sunlight on human skin.

  Ultraviolet rays (UV) contained in sunlight are known to adversely affect the human body, particularly the skin (also referred to as skin as appropriate), and the amount thereof tends to increase year by year due to changes in the global weather environment. . Ultraviolet rays are classified into UVA (wavelength 320 nm (nanometer) to 400 nm) and UVB (wavelength 280 nm to 320 nm) according to the wavelength. As an effect on skin, UVA is known to cause wrinkles and sagging due to skin darkening and collagen fiber destruction, and UVB causes increased spots and freckles, inflammation, and skin cancer. It is known.

  Not only the ultraviolet rays are invisible, but also there is no subjective symptom while receiving the ultraviolet rays until the above-mentioned symptoms appear, so it is impossible to know the amount of damage to the skin due to the amount of ultraviolet rays at that time. Although there are fluctuations in the amount of ultraviolet rays depending on the season, the ultraviolet rays are poured all year round, and in particular, UVA penetrates the glass and is damaged to the skin both indoors and even when it is cloudy, there is little attenuation of the irradiation amount. In view of such adverse effects of ultraviolet rays on the human body, an apparatus for measuring the amount of ultraviolet rays has been proposed (see, for example, Patent Document 1).

JP 11-132843 A

  The apparatus described in Patent Document 1 has a problem that it cannot measure the amount of damage to the skin at that time only by measuring the amount of ultraviolet light from sunlight. In addition, there is a problem that it is impossible to know the skin quality specific to the individual to be measured and the susceptibility to damage for each part of the body. Furthermore, there is a problem that it is impossible to know the amount of damage reduction due to application of sunscreen or the like, or the deterioration of the sunscreen effect.

  Therefore, the present invention is to provide a new and useful measurement apparatus and measurement system that solve at least one of the problems described above.

In order to solve the above problems, one aspect of the present invention provides:
A first ultraviolet sensor that detects a first ultraviolet amount contained in light from the light source;
It is a measuring apparatus provided with the 2nd ultraviolet sensor which detects the 2nd ultraviolet-ray quantity contained in the reflected light from skin.

Another aspect of the present invention is:
A first device and a second device;
The first device is
A first ultraviolet sensor that detects a first ultraviolet amount contained in light from the light source;
A second ultraviolet sensor for detecting a second ultraviolet amount contained in the reflected light from the skin;
A transmitter that transmits a signal corresponding to the first ultraviolet ray amount and the second ultraviolet ray amount to the second device;
The second device is
It is a measurement system provided with the receiving part which receives the signal transmitted from a 1st apparatus.

  According to one embodiment of the present invention, it is possible to acquire the amount of damage to the skin caused by ultraviolet rays at that time. The contents of the present invention are not construed as being limited by the effects exemplified in the present specification.

FIG. 1 is a perspective view for explaining the appearance of a measuring apparatus according to an embodiment of the present invention. FIG. 2 is a side view for explaining the appearance of the measuring apparatus according to the embodiment of the present invention. FIG. 3 is a schematic view schematically showing a measurement state using the measurement apparatus in one embodiment of the present invention. FIG. 4 is a diagram for explaining a measurement system according to an embodiment of the present invention. FIG. 5 is a block diagram showing the configuration of the measuring device and the smartphone in one embodiment of the present invention. 6A to 6D are waveform diagrams for explaining an ultraviolet information signal according to an embodiment of the present invention. FIG. 7 is a diagram for explaining a surface reflection light amount and the like in which ultraviolet rays contained in sunlight are reflected by the surface of the skin. FIG. 8 is a diagram for explaining a user interface according to an embodiment of the present invention. FIG. 9 is a diagram schematically showing a measurement state using the measurement system in one embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The description will be given in the following order.
<1. One Embodiment>
<2. Modification>
However, the following embodiments and the like exemplify a configuration for embodying the technical idea of the present invention, and the present invention is not limited to the illustrated configuration. In addition, the member shown by a claim is not specified as the member of embodiment. In particular, the scope of the present invention is limited to the dimensions, materials, shapes, relative arrangements, descriptions of directions such as up, down, left and right, etc., unless otherwise specified. It is not intended to be limited to, but merely an illustrative example. It should be noted that the size and positional relationship of the members shown in each drawing may be exaggerated for clarity of explanation, and only part of the reference symbols are used to prevent the illustration from becoming complicated. May be illustrated. Further, in the following description, the same name and reference sign indicate the same or the same members, and a duplicate description is omitted as appropriate. Furthermore, each element constituting the present invention may be configured such that a plurality of elements are constituted by the same member and the plurality of elements are shared by one member, and conversely, the function of one member is constituted by a plurality of members. It can also be realized by sharing. In addition, the content described in the embodiment can be applied to the modified example as appropriate.

<1. One Embodiment>
About the shape of the measuring device
First, with reference to FIG. 1 and FIG. 2, the shape of the measuring apparatus (measuring apparatus 10) in one Embodiment is demonstrated. FIG. 1 is a perspective view of the measuring apparatus 10, and FIG. 2 is a side view of the measuring apparatus 10. The measuring device 10 includes a housing 11 and a plug 12. The housing 11 is made of, for example, resin and has a cylindrical shape. A plug 12 is connected to one end surface 111 of the housing 11. The plug 12 is, for example, a 3.5 mm (millimeter) diameter four-pole plug, and is connected to a control board or the like disposed inside the housing 11. The plug 12 is attachable to and detachable from an earphone jack formed in a case of a smartphone described later.

  A flat portion 112 a is formed on the peripheral surface in the vicinity of the tip of the housing 11 (on the side opposite to the end surface 111). The flat portion 112 a has an opening 113 a that tapers toward the inside of the housing 11. The first ultraviolet sensor 15a is disposed at a position corresponding to the bottom of the opening 113a inside the housing 11. The first ultraviolet sensor 15a is a sensor that detects the amount of ultraviolet rays contained in light from the sun (sunlight) (hereinafter referred to as the first ultraviolet ray amount as appropriate), and outputs a current corresponding to the first ultraviolet ray amount. .

  A flat part 112 b is formed on the opposite side of the flat part 112 a in the housing 11. The flat portion 112 b is formed with an opening 113 b that tapers toward the inside of the housing 11. A second ultraviolet sensor 15b is arranged at a position corresponding to the bottom of the opening 113b inside the housing 11. The second ultraviolet sensor 15b is a sensor that detects the amount of ultraviolet light contained in the reflected light from the skin (hereinafter referred to as the second ultraviolet light amount as appropriate), and outputs a current corresponding to the second ultraviolet light amount. As these first and second ultraviolet sensors 15a and 15b, known ultraviolet sensors having sensitivity in the ultraviolet region (wavelength 260 nm to 400 nm) and using a compound semiconductor such as gallium nitride can be applied. In the embodiment, an ultraviolet sensor having the same characteristics is used.

  By the way, as shown in FIG. 2, the first and second ultraviolet sensors 15a and 15b are positioned on opposite sides of the casing 11, in other words, the light receiving surfaces of the first and second ultraviolet sensors 15a and 15b. Are arranged at substantially parallel positions. By arranging the first and second ultraviolet sensors 15a and 15b at such positions, the first and second ultraviolet light amounts can be detected simultaneously as schematically shown in FIG. The first and second ultraviolet sensors 15a and 15b are not limited to positions on the opposite side of the housing 11 as long as the first and second ultraviolet light amounts can be detected simultaneously. For example, the first and second ultraviolet sensors 15a and 15b may be arranged at positions slightly shifted rather than at positions opposite to each other in a strict sense.

About the measurement system
Next, a measurement system using the above-described measurement apparatus 10 will be described. The measurement system is configured to include a measurement device 10 that is an example of a first device and a smartphone 20 that is an example of a second device. As shown in FIG. 4, the smartphone 20 includes a housing 21 and a display unit 22 as main components. The display unit 22 is configured as a touch panel that can display various types of information and can accept operation inputs. An earphone jack is formed on the side surface of the housing 21 of the smartphone 20. By inserting / removing the plug 12 of the measuring device 10 into / from the earphone jack, the measuring device 10 can be attached / detached to / from the smartphone 20. FIG. 4 shows a state in which the measurement device 10 is attached to the smartphone 20.

  Next, an example of the electrical configuration of each device constituting the measurement system will be described with reference to the block diagram of FIG. In addition to the above-described first and second ultraviolet sensors 15a and 15b, the measuring device 10 serves as a signal generation unit 16 and a transmission unit that transmits a signal (data) generated by the signal generation unit 16 to the smartphone 20 side. And an interface (I / F) 17. In the following description, a signal generated by the signal generation unit 16 is appropriately referred to as an ultraviolet information signal.

  The signal generator 16 includes a CVC (Current to Voltage Converter) (current voltage converter) 161 connected to the second ultraviolet sensor 15b, a VCO (Voltage Controlled Oscillator) (voltage controlled oscillator) 162 connected to the CVC 161, A first ultraviolet sensor 15a and a PWM (Pulse Width Modulation) 163 connected to the VCO 162.

  The CVC 161 converts the current output from the second ultraviolet sensor 15b into a voltage. The VCO 162 oscillates a square wave having a frequency corresponding to the voltage converted by the CVC 161. The PWM 163 outputs a high level waveform for a time inversely proportional to the current output from the first ultraviolet sensor 15 a from the rising of the square wave output from the VCO 162.

  In addition to the display unit 22 described above, the smartphone 20 includes an interface 23 (microphone input in the present embodiment) as a receiving unit that receives an ultraviolet information signal, a first conversion unit 24 and a second conversion connected to the interface 23. Unit 25, a calculation unit 26 and a storage unit 27 connected to each of the first and second conversion units 24 and 25. The calculation unit 26 is connected to the display unit 22 and is configured to be able to display the calculation result of the calculation unit 26 on the display unit 22. In addition to the illustrated configuration, a configuration corresponding to the functions (imaging function, audio playback function, etc.) of the smartphone 20 may be added as appropriate.

  The 1st conversion part 24 converts the high time of an ultraviolet-ray information signal into the numerical value which shows the output current of the 1st ultraviolet sensor 15a. The second conversion unit 25 converts the cycle of the ultraviolet information signal into a numerical value indicating the output current of the second ultraviolet sensor 15b. The calculation unit 26 is composed of, for example, a CPU (Central Processing Unit), and performs calculations based on the first and second ultraviolet ray amounts corresponding to the output currents of the first and second ultraviolet ray sensors 15a and 15b, thereby applying ultraviolet rays to the skin. Get the amount of damage. Note that the calculation unit 26 may control each unit of the smartphone 20 in an integrated manner. The storage unit 27 includes a program ROM (Read Only Memory) in which a program executed by the calculation unit 26 is stored, a RAM (Random Access Memory) used as a work memory when the calculation unit 26 executes the program, and the calculation unit 26. It is comprised from the memory which memorize | stores the 1st, 2nd ultraviolet-ray amount etc. which are obtained by analyzing the calculation result and ultraviolet information signal. The memory | storage part 27 may be the memory incorporated in the smart phone 20, the memory which can be attached or detached to the smart phone 20, and may be comprised by several memory.

About the operation of the measuring device
Next, an operation example of the measuring apparatus 10 will be described. Measurement of the first and second ultraviolet ray amounts is started, and the first and second ultraviolet ray sensors 15a and 15b output currents corresponding to the first and second ultraviolet ray amounts. When the output current of the second ultraviolet sensor 15b is 0 nA (nanoampere) when the received light amount is 0 and 1000 nA when the received light amount is maximum, these current values are converted into 0 V (volt) and 1 V by the CVC 161, respectively. The VCO 162 oscillates a square wave having a frequency of 100 Hz (hertz) at 0V and 1 kHz (kilohertz) at 1V. When the voltage converted by the CVC 161 is between 0V and 1V, the VCO 162 oscillates a square wave having a frequency that changes in direct proportion to the voltage. FIG. 6A shows a square wave whose frequency output from the VCO 162 is 100 Hz (period T is 10 msec (millisec)).

  The PWM 163 outputs a high-level waveform for a time inversely proportional to the output current of the first ultraviolet sensor 15a from the rise of the output square wave of the VCO 162, and synthesizes the output currents of the two ultraviolet sensors into one pulse waveform. In this embodiment, when the output current of the first ultraviolet sensor 15a is 0 nA (light reception amount 0), the output current is 1000 nA (maximum light reception amount) so that the high-level period (section) is 8 msec. Is set so that the high-level period (section) is 0.8 msec.

  FIG. 6B shows a waveform example of an ultraviolet information signal output from the signal generator 16 when both the received light amounts of the first and second ultraviolet sensors 15a and 15b are zero. FIG. 6C shows a waveform example of an ultraviolet information signal output from the signal generator 16 when the amounts of light received by the first and second ultraviolet sensors 15a and 15b are both maximum. In FIG. 6D, when the amount of light received by the first ultraviolet sensor 15a is half of the maximum amount of received light, and when the amount of received light of the second ultraviolet sensor 15b is 10% of the maximum amount of received light, it is output from the signal generator 16. An example of the waveform of the ultraviolet information signal is shown. As described above, the signal generation unit 16 converts the two measurement values (current values output from the first and second ultraviolet sensors 15a and 15b) corresponding to the first and second ultraviolet ray amounts into a signal having one pulse waveform. An ultraviolet information signal converted into can be generated. The analog ultraviolet information signal generated by the signal generator 16 is transmitted to the smartphone 20 via the interface 17 at an appropriate timing.

"Operation of smartphone"
Next, an operation example of the first and second conversion units 24 and 25 in the smartphone 20 will be described. An ultraviolet information signal transmitted from the measuring apparatus 10 is received via the interface 23. Since the output current of the second ultraviolet sensor 15b does not exceed the output current of the first ultraviolet sensor 15a, the first and second ultraviolet sensors 15a, 15b are detected from the signal waveform (period and high level period) of the ultraviolet information signal. The output current can be obtained. Based on the output current, the first and second ultraviolet ray amounts received by the first and second ultraviolet ray sensors 15a and 15b can be obtained. The analysis process for the ultraviolet information signal may be executed in real time, and once the ultraviolet information signal is temporarily stored in the storage unit 27 or the like, it is executed for the stored ultraviolet information signal. It may be.

Here, when the output current of the first ultraviolet sensor 15a is Is1 (nA) and the high level period in one cycle of the ultraviolet information signal is H (msec), the first conversion unit 24 uses the following formula 1 Based on the above, the high period → numerical value conversion process is performed.
Is1 =-(1000 / 7.2) * H + (8000 / 7.2) Formula 1

On the other hand, when the output current of the second ultraviolet sensor 15b is Is2 (nA) and the period of the ultraviolet information signal is T (msec), the second conversion unit 25 calculates the period → numerical value based on Equation 2 below. Perform the conversion process.
Is2 = − (1000/9) * T + (10000/9) Equation 2
Then, the output currents Is 1 and Is 2 obtained by the first and second conversion units 24 and 25 are output to the calculation unit 26.

  Next, specific examples (first, second, and third examples) of calculations executed by the calculation unit 26 in the smartphone 20 will be described. The first example is an example in which the calculation unit 26 calculates the amount of damage that the amount of ultraviolet rays contained in sunlight gives to the skin by performing calculations based on the first and second amounts of ultraviolet rays measured simultaneously.

  In general, as shown in FIG. 7, typically, 5% of the ultraviolet light irradiated from the sun to the skin SK is reflected by the surface of the epidermis, absorbed by 40% inside the skin SK, and the remaining 55% is skin SK. Reflected and diffused from inside to outside. Here, when UV protection such as melanin pigment is large, the amount of absorption inside the skin SK increases, and the amount of reflection diffusion to the outside decreases. Therefore, it can be said that the amount of damage received by the skin SK is correlated with the amount of internally reflected light that has not been absorbed internally.

When this correlation is a direct proportion, the coefficient (K) of the damage amount with respect to the amount of ultraviolet rays passing through the skin SK is used, the incident light amount of ultraviolet rays contained in sunlight is Uvd, and the surface reflection of ultraviolet rays reflected by the skin SK surface. If the light amount is Uvr1, and the internally reflected light amount Uvr2 of the ultraviolet light that passes through the skin SK and is reflected, the damage amount Dmg can be estimated by the following equation 3.
Dmg = K * ((Uvr1 + Uvr2) −Uvd * 0.05) Equation 3

The incident light amount Uvd in Expression 3 corresponds to the first ultraviolet ray amount, and can be obtained based on the output current Is1 of the first ultraviolet sensor 15a.
In addition, since the surface reflected light amount Uvr1 and the internal reflected light amount Uvr2 cannot be detected and measured individually, the term (Uvr1 + Uvr2) is used, and the second ultraviolet light amount corresponding to this term is 2 based on the output current Is2 of the ultraviolet sensor 15b. That is, the reflected light from the skin is a concept including light reflected by the surface of the skin and light reflected outside after passing through the skin.
In addition, as a method of obtaining the ultraviolet ray amount from the output current, the ultraviolet ray amount may be obtained by referring to a table in which the output current and the ultraviolet ray amount are associated with each other, and the calculation unit 26 performs a predetermined calculation on the output current. You may make it ask in. Each of the first and second converters 24 and 25 may obtain the first and second ultraviolet light amounts based on the output current. The obtained first and second ultraviolet light amounts may be stored in the storage unit 27.

  The second example is an example in which the calculation unit 26 calculates the damage rate due to ultraviolet rays contained in sunlight by performing calculations based on the first and second ultraviolet ray amounts measured simultaneously. Here, the damage rate is a value representing the susceptibility to damage by ultraviolet rays in accordance with the properties (skin quality) of the individual's skin and the body part, regardless of the amount of incident ultraviolet rays.

Assuming that the ratio obtained by dividing the damage amount Dmg in Equation 3 above by (K * incident light amount Uvd) is the damage rate Dratio that the skin quality receives, the damage rate Dratio can be expressed by Equation 4 below.
Dratio = Dmg / (K * Uvd)
= (Uvr1 + Uvr2) /Uvd-0.05 Formula 4

  The amount of damage and damage rate due to ultraviolet rays on the skin varies depending on the skin quality even if the same amount of ultraviolet rays is exposed, and people with skin quality that turns red due to sunburn are affected by ultraviolet rays with a constitution that makes it difficult to produce melanin pigments that protect against ultraviolet rays People who are prone to skin damage and tanned neatly produce melanin pigments to protect against ultraviolet rays, so the amount of damage and the damage rate are relatively small. Further, even in the same person, the amount of damage and the damage damage rate differ depending on parts such as the face, the outside of the limb, the inside of the limb, the chest, and the back. In the prior art, only the amount of ultraviolet rays from sunlight was measured, and at that time the amount of damage and the damage rate on the spot could not be known, but according to the present invention, the amount of damage as described above, The damage rate can be obtained, and the amount of damage for each part of the body can be known by appropriately changing the measurement location. The obtained damage amount and damage rate can be stored in the storage unit 27 as a history (log) in association with the measurement date and time, and the history can be displayed as a line graph or the like. is there.

  The third example is an example in which the calculation unit 26 performs a calculation based on changes over time of the first ultraviolet ray amount and the second ultraviolet ray amount. By performing this calculation, for example, it is possible to know the amount of damage based on changes in the weather, changes in the damage rate, and the amount of damage before and after application of the sunscreen agent, and the change in the damage rate. Here, the example which calculates | requires the change of the damage rate before application | coating of a sunscreen agent and after application | coating is demonstrated.

In general, sunscreens, which are said to be highly effective, have a function of irregularly reflecting ultraviolet rays with ultraviolet reflectors such as titanium oxide and zinc oxide, and heat energy by absorbing ultraviolet rays with ultraviolet absorbers such as octyl methoxycinnamate. There is a function to change. Here, in the above-mentioned formula 4, if the damage rate before application of sunscreen is Dratio, Uvr1, Uvr2, and the damage rate after application of sunscreen is Dratio, Uvr1a, Uvr2a, sunscreen application The subsequent damage rate Dratioa can be expressed by the following Expression 5 as in Expression 4.
Dratioa = (Uvr1a + Uvr2a) /Uvd−0.05 Formula 5
Note that the value (0.05) of the second term in Equation 5 increases strictly due to the irregular reflection of the ultraviolet reflector, but the amount of change received by the second ultraviolet sensor 15b is zero because of the 100% irregular reflection.

The difference in damage susceptibility before and after application of the sunscreen (change in damage rate), in other words, the effect of the sunscreen (Effect) can be expressed by the following Equation 6.
Effect = Dratio-Dratioa
= {(Uvr1 + Uvr2)-(Uvr1a + Uvr2a)} / Uvd Expression 6

  For example, the damage rate before applying the sunscreen is obtained and the result is stored and held in the storage unit 27. And the damage rate after apply | coating a sunscreen agent is calculated | required, By comparing the result with the damage rate memorize | stored in the memory | storage part 27, the sunscreen effect in the spot of the sunscreen agent at that time can be known. Moreover, the damage rate after sunscreen agent application is memorized at any time, and by comparing this damage rate with the damage rate obtained after a certain period of time after application, the time-dependent change in sunscreen effect due to sweat or the like ( You can also know (decrease in sunscreen effect).

“How to use the measurement system”
Next, an example of how to use the measurement system will be described. First, a user interface applicable to the present invention will be described with reference to FIG. As shown in FIG. 8, for example, a display 221 indicating the amount of ultraviolet rays, a display 222 indicating the amount of damage to the skin and the damage rate (only one may be used), and a display unit 22 arranged near the center of the display unit 22 The user interface includes a first measurement button 223, a second measurement button 224 that is arranged slightly to the right of the display unit 22 to measure the sunscreen effect, a bare skin registration button 225, and a display 226 that shows the sunscreen effect. It is configured. The displays 221, 222, and 226 include a bar graph that extends in the horizontal direction and an instruction icon that moves in the left-right direction on the bar graph, and the numerical value and the difference increase as the instruction icon points to the right side of the bar graph.

  After installing a dedicated application on the smartphone 20, the application is activated, and the plug 12 of the measurement apparatus 10 is inserted into the earphone jack of the housing 21 of the smartphone 20. When measuring the amount of damage to the skin and the damage rate due to ultraviolet rays, after tapping the first measurement button 223, as shown in FIG. 9, 3 cm (centimeters) from the portion to be measured (in this example, the cheek of the user U) ), And the smartphone 20 is set and held in a state where the display unit 22 of the smartphone 20 is substantially parallel to the cheek.

  The application starts measuring the first and second ultraviolet light amounts after the time (for example, about 2 seconds) required for setting the smartphone 20 has elapsed since the first measurement button 223 was tapped. At this time, the user may be notified that the measurement of the first and second ultraviolet light amounts has been started by the generation of sound, display, vibration, or the like by the smartphone 20. Assuming that the measurement time (including the time required for the calculation processing for determining the damage amount) is 1 second, the end of measurement is notified by sound, display, vibration, etc. by the smartphone 20 after 1 second. Then, the damage amount and the damage rate obtained by the measurement are displayed on the display unit 22, and the results are held until the next measurement is started.

  When measuring the sunscreen effect, the skin registration button 225 is tapped before the sunscreen is applied, and the smartphone 20 is set and held as shown in FIG. And the measurement similar to the measurement of the amount of damage mentioned above is performed, and the completion | finish of bare skin registration (reference value registration) is displayed on the display part 22 after completion | finish of a measurement. After the skin registration is completed, the user U applies sunscreen on the cheek, and then taps the second measurement button 224 to perform the same measurement. The difference between the damage rate of the measurement result and the damage rate at the time of registration is displayed as a display 226, and the user U can know the sunscreen effect. For example, since it becomes possible to know a reduction in the sunscreen effect due to water or sweat at a beach or swimming pool, the user U can know when to reapply the sunscreen. Note that the user interface can be changed as appropriate, such as making the first and second measurement buttons 223 and 224 one button.

  As exemplified in FIG. 9, in the embodiment of the present invention, since the first and second ultraviolet sensors 15a and 15b are arranged at opposite positions, the first and second ultraviolet light amounts are simultaneously set. Can be detected. Here, it is also conceivable to use the ultraviolet sensor upside down by using one ultraviolet sensor. However, the amount of ultraviolet rays from sunlight constantly changes due to slight changes in cloud and atmospheric conditions that humans cannot perceive, and the first and second ultraviolet rays are measured almost simultaneously using one ultraviolet sensor. Even if it does, it is difficult to obtain | require the exact amount of damages. Even if the measurement can be performed almost simultaneously, it is necessary to distinguish whether the measurement result indicates the first or second ultraviolet ray amount, and it is necessary to store the measurement result, which complicates the calculation in the calculation unit 26. . As described above, in the embodiment, since the first and second ultraviolet ray amounts can be detected at the same time, such a problem does not occur, and the calculation in the calculation unit 26 can be simplified and accurately performed. Damage amount can be obtained.

  Furthermore, in one embodiment of the present invention, a microphone input is used as an interface between the measurement apparatus 10 and the smartphone 20. Thereby, the influence of the OS (Operating System) type and model dependency of the smartphone 20 can be minimized. In addition, since the DC (Direct Current) power supplied from the smartphone 20 to the microphone terminal of the earphone jack can be used as the power of the measuring device 10 for supplying power to the condenser microphone of the headset, the power of the measuring device 10 is used. It can be unnecessary or minimized, and the measuring apparatus 10 can be downsized. Since the measuring device 10 can be reduced in size, it is possible to prevent the measurement of the second ultraviolet ray amount from being affected by the shadow of the measuring device 10.

<2. Modification>
Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the technical idea of the present invention. Hereinafter, modified examples will be described.

  In the above-described embodiment, the calculation unit 26 of the smartphone 20 performs various calculations, but the measurement device 10 may have the calculation function of the calculation unit 26 and the storage function of the storage unit 27 described above. In addition, the measurement system may be constituted by the measurement device 10 alone.

  The second device is not limited to a smartphone, and may be a mobile phone, a PDA (Personal Digital Assistant), a tablet terminal, an electronic notebook, an electronic book reader, a portable game machine, a video camera, a wearable terminal, etc. The configuration and function of the measurement apparatus 10 may be incorporated in such a second device. Further, the second device is not limited to a portable device, and may be a personal computer, a television device, or the like. Furthermore, the second device may be a device provided in a service center that provides the calculation function of the calculation unit 26 described above as a service. In this case, a smartphone or the like may be used as a communication relay device.

  The calculating part 26 should just obtain | require at least 1 of the amount of damage, a damage rate, and the effect of a sunscreen, and does not need to obtain | require all. Further, an appropriate correction process or the like may be performed when obtaining the damage amount or the like, and the calculation formula for obtaining the damage amount or the like is not limited to the above-described calculation formula.

  The shape of the housing 11 of the measuring device 10 is not limited to a cylindrical shape, and may be a prismatic shape, a spherical shape, etc. The diameter and the number of poles of the plug 12 are appropriately changed depending on the shape of the jack to which the plug 12 is connected. can do. Moreover, the 1st, 2nd ultraviolet sensor 15a, 15b in the measuring apparatus 10 may be provided in a separate housing | casing.

  The interface between the measurement apparatus 10 and the smartphone 20 may be USB (Universal Serial Bus), infrared communication, Bluetooth (registered trademark), or the like, and may be wired or wireless. Further, the ultraviolet information signal exchanged between the measuring apparatus 10 and the smartphone 20 may be in a digital format.

  In the above-described embodiment, the light source has been described as the sun. However, the light source may have a spectral intensity in the ultraviolet region such as a phosphor or a discharge lamp, and is not limited to the outdoors. Measurements may be made in a room using the.

  The present invention is not limited to an apparatus, and can be realized by a method, a program, a recording medium recording the program, a system, and the like. The program can be provided to the user via, for example, a network or a portable memory such as an optical disk or a semiconductor memory.

DESCRIPTION OF SYMBOLS 10 ... Measuring apparatus 11 ... Housing 15a ... 1st ultraviolet sensor 15b ... 2nd ultraviolet sensor 16 ... Signal generation part 17 ... Interface 20 ... Smartphone 22 ... Display Unit 23 ... Interface 26 ... Calculation unit 27 ... Storage unit

Claims (15)

A first ultraviolet sensor that detects a first ultraviolet amount contained in light from the light source;
A measurement apparatus comprising: a second ultraviolet sensor that detects a second ultraviolet ray amount contained in light reflected from the skin. The measuring apparatus according to claim 1, wherein the first ultraviolet sensor and the second ultraviolet sensor are arranged at positions where the first ultraviolet amount and the second ultraviolet amount can be detected simultaneously. A housing that supports the first ultraviolet sensor and the second ultraviolet sensor;
The measuring apparatus according to claim 2, wherein the first ultraviolet sensor and the second ultraviolet sensor are arranged at positions opposite to each other in the housing. The measuring apparatus of any one of Claims 1 thru | or 3 provided with the calculating part which performs the calculation based on a said 1st ultraviolet-ray amount and a said 2nd ultraviolet-ray amount. The computing unit obtains at least one of a damage amount and a damage rate that the ultraviolet ray amount included in the light from the light source gives to the skin based on the first ultraviolet ray amount and the second ultraviolet ray amount measured simultaneously. The measuring apparatus according to claim 4. The measurement apparatus according to claim 4, wherein the calculation unit performs a calculation based on a change with time of each of the first ultraviolet light amount and the second ultraviolet light amount. The measurement apparatus according to claim 1, further comprising a storage unit that stores the detected first ultraviolet light amount and the second ultraviolet light amount. A first device and a second device;
The first device is:
A first ultraviolet sensor that detects a first ultraviolet amount contained in light from the light source;
A second ultraviolet sensor for detecting a second ultraviolet amount contained in the reflected light from the skin;
A transmitter for transmitting a signal corresponding to the first ultraviolet ray amount and the second ultraviolet ray amount to the second device;
The second device is:
A measurement system comprising a receiving unit that receives a signal transmitted from the first device. The measurement system according to claim 8, wherein the transmission unit converts a measurement value corresponding to the first ultraviolet ray amount and the second ultraviolet ray amount into one signal and transmits the signal. The measurement system according to claim 8, wherein the second device includes a calculation unit that performs a calculation based on the first ultraviolet light amount and the second ultraviolet light amount obtained by analyzing the signal. The computing unit obtains at least one of a damage amount and a damage rate that the ultraviolet ray amount included in the light from the light source gives to the skin based on the first ultraviolet ray amount and the second ultraviolet ray amount measured simultaneously. The measurement system according to claim 10. The measurement system according to claim 10 or 11, wherein the calculation unit performs a calculation based on a temporal change in each of the first ultraviolet light amount and the second ultraviolet light amount. The measurement system according to any one of claims 8 to 12, wherein the second device includes a storage unit that stores the detected first ultraviolet ray amount and the second ultraviolet ray amount. The measurement system according to claim 8, wherein the second device includes a display unit that performs display according to a calculation result of the calculation unit.   The measurement system according to claim 8, wherein the second device is a portable device, and the first device is detachably attached to the second device.