Skin analysis system, skin analysis device, and skin analysis method

Abstract

To measure gas from an object by a simple configuration, without influencing skin and the like of a user.SOLUTION: In a non-contact gas measurement system 500, a non-contact gas measurement device 100 measures measurement object gas 601 emitted from an object 600, using an electromagnetic wave. An analysis unit 410 analyzes the measurement object gas 601 from a measurement value measured by the non-contact gas measurement device 100.The non-contact measurement device 100 comprises: a reception oscillation unit; and a control unit. The reception oscillation unit exits and detects the electromagnetic wave. The control unit controls the reception oscillation unit. The reception oscillation unit irradiates the object 600 with the electromagnetic wave on the basis of a command from the control unit, and outputs to the analysis unit 410, a value of a changing voltage or current in accordance with intensity of the electromagnetic wave reflected from the object 600 as a measurement value.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to Skin analysis system, skin analysis device, and skin analysis method In particular, the present invention relates to a technique that is effective for non-contact gas measurement on the skin surface. [Background technology]

[0002] Background art in this technical field includes, for example, Japanese Patent Application Laid-Open No. 2002-263072 (Patent Document 1), Japanese Patent Application Laid-Open No. 2010-172543 (Patent Document 2), and Japanese Patent Application Laid-Open No. 2010-169658 (Patent Document 3).

[0003] Patent Document 1 states that the objective is to "provide a moisture evaporation measuring device that is capable of measuring with sufficient accuracy, and which is small, lightweight, inexpensive, and easy to handle." It also states as a solution that "a circuit board is placed inside a frame that comes into contact with the skin surface, and only one capacitive polymer thin film humidity sensor is placed on the circuit board as the humidity detection element. The drive circuit for the humidity detection element is also placed on the circuit board. The moisture evaporation amount is calculated from the circuit output extracted through the handle shaft. Because only one humidity detection element is used, the number of parts is reduced compared to when two are used, and the costs of assembly, adjustment, and maintenance are lower."

[0004] Furthermore, Patent Document 2 states that the objective of the present invention is to "provide an apparatus for easily and accurately estimating transepidermal water loss and evaluating the skin barrier function based on the estimated amount," and states that the solution to this objective is to "include a main body, an application electrode capable of applying a plurality of AC voltages and installed on the main body, a detection electrode 13 installed on the main body for detecting any of susceptance (B), admittance (Y), or conductance (G), a display unit installed on the main body, and a calculation unit built into the main body for calculating a characteristic value (P) that can be used as an estimate of the transepidermal water loss based on any of the detected susceptance (B), admittance (Y), or conductance (G), and the transepidermal water loss is estimated based on the calculated characteristic value (P), and the skin barrier function is evaluated based on the estimated amount."

[0005] Furthermore, Patent Document 3 states that the problem is to "efficiently analyze gas supplied from a gas supplying portion," and as a solution to this problem, it states that "the device is provided with a trapping portion (a member composed of a trapping portion and a collection container) that includes a trapping film 3 (e.g., a porous polymer) that traps gas and that can be positioned so that the gas trapped by the trapping film (e.g., skin gas generated from the human body) interacts with the terahertz waves or infrared light generated from the generation portion. The trapping portion includes a structure (collection container) that can come into contact with the portion that supplies the gas (e.g., the human body, such as an arm or hand). The structure is arranged to maintain the trapping film and the portion 1 in a non-contact state." [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2002-263072 A [Patent Document 2] JP 2010-172543 A [Patent Document 3] JP 2010-169658 A Summary of the Invention [Problem to be solved by the invention]

[0007] The skin of the human body not only regulates the internal environment and temperature through cutaneous respiration and sweating, but also protects the internal tissues of the body from external stimuli such as foreign bodies, bacteria, and microorganisms.

[0008] For this reason, it is important to obtain information on the amount of moisture inside the skin and the amount of moisture evaporated from the skin, i.e., the so-called transepidermal water loss, from the perspective of maintaining health, such as preventing heat stroke and dry skin due to atopic dermatitis, as well as from practical perspectives, such as evaluating cosmetics and pharmaceuticals and beauty. In particular, transepidermal water loss is of great interest as an index for evaluating the skin barrier function, which protects the body from external stimuli and prevents moisture from evaporating outside the body.

[0009] In healthcare, not only the moisture evaporated from the skin but also gases such as skin gas are measured. Skin gas can be used to detect certain diseases. For example, it is said that a large amount of acetone in skin gas is associated with diabetes, and a large amount of ammonia is associated with chronic liver disease.

[0010] In measuring the amount of transepidermal water loss, a technique is known that uses, for example, a humidity sensor to measure the amount of water loss that evaporates from the skin surface (for example, Patent Document 1). This technique requires a mechanism to stabilize the humidity sensor that measures the amount of water loss that evaporates from the skin surface. This leads to problems such as expensive and large-scale measuring equipment. In addition, since it is a contact type in which part of the measuring equipment is brought into contact with the target, i.e., the skin, there is a risk that the patient's skin surface may be affected or damaged during measurement. Considering the effect on the patient's skin, the measurement location is limited.

[0011] On the other hand, there is a technology for evaluating the barrier function of the skin in a small size and at low cost by measuring the electrical properties of the skin (for example, Patent Document 2). As with Patent Document 1, in order to measure the electrical properties of the object, it is necessary to bring a part of the measuring device into contact with the skin, which is the part to be measured.

[0012] Also, as a technique for measuring skin gas, a technique for capturing skin gas and measuring the captured skin gas using electromagnetic waves (for example, Patent Document 3) is known. In this technique, a measuring device needs to have a light source that generates infrared light or the like and a detector to capture and measure skin gas. Therefore, there is a problem that the device configuration becomes complicated and large-scale.

[0013] The technology of Patent Document 3 also has a configuration in which part of the measuring device is brought into contact with the skin of the subject to perform measurement, so that, similarly to Patent Documents 1 and 2, the measurement location is limited.

[0014] An object of the present invention is to provide a technique capable of measuring gas from a target object with a simple configuration without affecting the skin of a user or the like.

[0015] The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings. [Means for solving the problem]

[0016] Among the inventions disclosed in this application, a brief summary of representative inventions is as follows.

[0017] That is, a representative skin analysis system includes a non-contact gas measuring device that uses electromagnetic waves to measure a target gas emitted from the skin of a subject, an analysis unit that analyzes the target gas from a measurement value measured by the non-contact gas measuring device, a system control unit that controls the operation of the non-contact gas measuring device and the analysis unit, and a display unit. The non-contact gas measuring device: An electronic device that oscillates electromagnetic waves in the negative resistance region, The electromagnetic waves are irradiated onto the subject's skin, and the voltage or current value, which changes depending on the intensity of the electromagnetic waves reflected from the subject's skin, is output to the analysis unit as a measured value, and the display unit displays information regarding the condition of the skin as a result based on the analysis by the analysis unit.

[0018] A representative skin analysis device includes a communication unit that connects to a communication network, an output unit that outputs information, an imaging unit that acquires images, a non-contact gas measuring device that measures a target gas emitted from the skin of a subject using electromagnetic waves, an analysis unit that analyzes the target gas from measurement values ​​measured by the non-contact gas measuring device, a system control unit that controls the operation of the skin analysis device, and a display unit. The non-contact gas measuring device irradiates the electromagnetic waves to the skin of the subject, and outputs a voltage or current value that changes according to the intensity of the electromagnetic waves reflected from the skin of the subject to the analysis unit as a measurement value, and the display unit displays information regarding the condition of the skin as a result based on the analysis by the analysis unit. The communication unit transmits the measurement value of the electromagnetic wave measured by the non-contact gas measuring device to an analysis device connected to the communication network, and receives the analysis result of the analysis performed by the analysis device. . Effect of the Invention

[0019] The effects obtained by the representative inventions among those disclosed in this application will be briefly described as follows.

[0020] (1) User convenience can be improved.

[0021] (2) The non-contact gas measurement device and the non-contact gas measurement system can be made smaller. [Brief description of the drawings]

[0022] [Figure 1] FIG. 1 is an explanatory diagram showing an example of the configuration of a non-contact gas measuring device according to a first embodiment. [Diagram 2] 2 is an explanatory diagram showing an example of characteristics of a receiver-oscillator included in the non-contact gas measuring device of FIG. 1. [Diagram 3] 2 is a flowchart showing an example of a gas measurement operation performed by the non-contact gas measuring device of FIG. 1. [Figure 4] 2 is an explanatory diagram showing an example of the configuration of a non-contact gas measuring system using the non-contact gas measuring device of FIG. 1. FIG. [Diagram 5] FIG. 5 is a schematic perspective view showing an example of the non-contact gas measurement system of FIG. [Figure 6] FIG. 6 is an explanatory diagram showing an example of a use of the non-contact gas measurement system of FIG. 5. [Figure 7] 5 is an explanatory diagram showing an example of the configuration of a receiving / oscillating section and an information correcting section included in the non-contact gas measuring system of FIG. 4. FIG. [Figure 8] 5 is an explanatory diagram showing another example of the configuration of the receiving / oscillating section and the information correcting section included in the non-contact gas measuring system of FIG. 4. FIG. [Figure 9] FIG. 9 is an explanatory diagram following FIG. [Figure 10] 5 is an explanatory diagram showing an example of the configuration of a control information management table referred to by a system control unit of the non-contact gas measuring system of FIG. 4. FIG. [Figure 11]5 is an explanatory diagram showing an example of a measurement result table stored in a memory of the non-contact gas measuring system of FIG. 4. FIG. [Figure 12] 5 is a flowchart showing an example of a measurement process of a measurement target gas by the non-contact gas measurement system of FIG. [Figure 13] 11 is an explanatory diagram showing an example of the configuration of a receiving oscillator and an information corrector according to the second embodiment. FIG. [Figure 14] FIG. 11 is an explanatory diagram showing an example of the configuration of a mobile terminal according to embodiment 3. [Figure 15] FIG. 15 is an explanatory diagram showing an example of an overview of the mobile terminal of FIG. [Figure 16] 16 is an explanatory diagram showing an example of a display by an input / output unit of the mobile terminal of FIG. 15. [Figure 17] 15 is a flowchart showing an example of the operation of gas measurement by the mobile terminal of FIG. 14. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] In all the drawings for explaining the embodiments, the same members are generally given the same reference numerals, and repeated explanations thereof will be omitted.

[0024] (Embodiment 1) The embodiment will be described in detail below.

[0025] <Example of configuration of non-contact gas measurement device> FIG. 1 is an explanatory diagram showing an example of the configuration of a non-contact gas measuring device 100 according to the first embodiment.

[0026] The non-contact gas measuring device 100 measures a measurement target gas 601 emitted from a target object 600 by using electromagnetic waves. This non-contact gas measuring device 100 has a receiving / oscillating unit 101 and a control unit 110, as shown in Fig. 1. The receiving / oscillating unit 101 is configured to independently oscillate and receive electromagnetic waves, and emits and detects electromagnetic waves.

[0027] The receiving / oscillating unit 101 has a receiver / transmitter 102 and a lens 103. The receiver / transmitter 102 oscillates and receives electromagnetic waves. The lens 103 collimates the electromagnetic waves oscillated by the receiver / transmitter 102, irradiates the electromagnetic waves on an object 600, and collects the waves reflected from the object 600.

[0028] The electromagnetic waves oscillated by the receiver-transmitter 102 are irradiated perpendicularly to the object 600, so that the reflected waves pass through the measurement target gas 601 and return to the receiver-transmitter 102. The object 600 is the skin of a user, for example. The control unit 110 controls the receiver-oscillator 101.

[0029] A frequency that is easily absorbed by gas is used for the electromagnetic waves oscillated by the receiving / oscillating unit 101. For example, when the object 600 is skin and the measurement target gas 601 is water vapor that evaporates from the skin, a frequency of about 0.56 THz or about 0.75 THz is suitable.

[0030] The receiver-oscillator 102 is, for example, an electronic device that oscillates an electromagnetic wave in a negative resistance region, such as a resonant tunneling diode. For convenience, the receiver-oscillator is shown as a resonant tunneling diode in FIG. 1, but is not limited to this.

[0031] For example, a device that oscillates electromagnetic waves such as a laser may be used. Examples of oscillators that oscillate at frequencies of about 0.56 THz or 0.75 THz include quantum cascade lasers and resonant tunneling diodes.

[0032] <Characteristics of receiver / transmitter> FIG. 2 is an explanatory diagram showing an example of the characteristics of the transmitter / receiver 102 of the non-contact gas measuring device 100 of FIG.

[0033] FIG. 2 shows the relationship between the strength of the reflected wave from the object 600 and the current flowing between the terminals of the transmitter-receiver 102, and is an example of a phenomenon that affects the oscillation characteristics of the transmitter-receiver 102 when an electromagnetic wave oscillated from the transmitter-receiver 102 returns to the transmitter-receiver 102 as a reflected wave.

[0034] For example, when a resonant tunneling diode is used as the transmitter-receiver 102, an electromagnetic wave oscillates in a negative resistance region by applying a specific voltage between the terminals of the resonant tunneling diode.

[0035] Non-patent document Masahiro Asada and Safumi Suzuki 2015 Jpn.J.Appl.Phys. 54 070309 describes that when the reflectivity of a reflecting object differs, the current flowing between the terminals of an oscillator changes.

[0036] This occurs when a virtual admittance is added to the oscillation circuit. Similarly, in the case of semiconductor lasers, reflected waves affect the oscillation characteristics, but this occurs when the oscillation wave and the reflected wave interfere with each other in the resonator. These phenomena have been treated as noise until now.

[0037] The inventors have noticed that this phenomenon can be applied to non-contact gas measurement by regarding what is shown as the reflectance of a reflective object in the above-mentioned non-patent document as attenuation due to absorption of electromagnetic waves in the gas to be measured.

[0038] That is, the receiver-transmitter 102 oscillates an electromagnetic wave, and a difference occurs in the current flowing through the receiver-transmitter 102 depending on the strength of the reflected wave that is reflected from the object 600 and returns to the receiver-transmitter 102. Since the strength of the reflected wave changes depending on the amount of the measurement target gas 601 in this electromagnetic wave path, it becomes possible to measure the gas using the difference in the current or voltage applied to the receiver-transmitter 102.

[0039] 2, for example, when the current flowing between the terminals of the resonant tunneling diode is small, the strength of the reflected wave is weak, and as a result, it is found that the electromagnetic wave is strongly absorbed by the measurement target gas 601. In other words, it is found that the amount of measurement target gas 601 is large.

[0040] In this way, by detecting the current or voltage change between the terminals of the transmitter / receiver 102 and calculating the amount of electromagnetic waves absorbed by the target gas 601, it is possible to measure the target gas 601 from the correlation between absorption by the gas and the amount.

[0041] In addition, the graph shown in FIG. 2 is just an example, and the data structure is not limited to this, and any information having a structure showing the relationship between the measured current value and the gas to be measured, such as a table structure, may be used.

[0042] <Example of gas meter operation> FIG. 3 is a flowchart showing an example of the operation of gas measurement by the non-contact gas measuring device 100 of FIG.

[0043] First, the control unit 110 controls the receiving / oscillating unit 101 to irradiate electromagnetic waves of a preset frequency onto the object 600 to be measured (step S101). In the process of step S101, the non-contact gas measuring device 100 only needs to irradiate electromagnetic waves toward the object 600, so there is no need to bring the non-contact gas measuring device 100 into close contact with the object 600 such as skin, and gas measurement is performed with a distance between the non-contact gas measuring device 100 and the object 600 as shown in FIG.

[0044] The electromagnetic wave irradiated perpendicularly to the object 600 passes through the gas 601 to be measured and is irradiated to the object 600, and the reflected wave is collected by the lens 103 and returns to the receiver-transmitter 102. Next, the control unit 110 obtains a current or voltage value according to the intensity of the reflected wave received by the receiving-oscillating unit 101 (step S102).

[0045] This allows gas measurement to be performed without the non-contact gas measuring device 100 being in close contact with the target object 600, as described above, thereby reducing the impact on the patient's skin surface during measurement. In addition, since there is no need to consider the impact on the skin, etc., there are no limitations on the measurement location, and accurate measurement results can be easily obtained.

[0046] 2 can be replaced with the concentration of the target gas 601 by measuring a quantitative value in advance. In this case, the concentration of the target gas 601 can be calculated using the current or voltage value measured in the process of step S102. It is also possible to convert the change in the target gas 601 by comparing with the current or voltage results measured in the past.

[0047] <Example of non-contact gas measurement system configuration> FIG. 4 is an explanatory diagram showing an example of the configuration of a non-contact gas measuring system 500 using the non-contact gas measuring device 100 of FIG.

[0048] As shown in FIG. 4, the non-contact gas measurement system 500 includes the non-contact gas measurement device 100, an information correction unit 200, a distance measurement unit 300, a system control unit 400, an analysis unit 410, an input / output unit 420, and a memory 430.

[0049] The non-contact gas measuring device 100, information correction unit 200, distance measurement unit 300, system control unit 400, analysis unit 410, input / output unit 420, and memory 430 are interconnected by a system bus 401. Note that the configuration and operation of the non-contact gas measuring device 100 are the same as those in FIG. 1, and therefore a description thereof will be omitted.

[0050] The information correcting unit 200 acquires a correction wave that reduces measurement errors caused by the environment. This correction wave is an electromagnetic wave. For example, when measuring water vapor evaporated from the skin as the measurement target gas, the amount of water vapor in the air may differ depending on the environment in which the user is present, which may affect the measurement value. For this reason, the correction wave acquired by the information correcting unit 200 is used to eliminate the effect of water vapor caused by the environment.

[0051] The distance measuring unit 300 measures the distance from the distance measuring unit 300 to the target object 600. The system control unit 400 acquires various data and controls the non-contact gas measuring system 500. In particular, the system control unit 400 controls the non-contact gas measuring device 100 by referring to a control information management table 800 shown in Fig. 10 (to be described later) when measuring the measurement target gas 601.

[0052] The analysis unit 410 analyzes the measurement value of the detected electromagnetic wave. The input / output unit 420 is an interface with the user, and is composed of an input unit 421 and an output unit 422 shown in Fig. 5, which will be described later. The input unit 421 is, for example, a button, and the output unit 422 is, for example, a display unit.

[0053] The memory 430 is made up of a non-volatile semiconductor memory such as a flash memory, and stores received data, analysis results, etc. In particular, it stores a control information management table 800 in Fig. 10 and a measurement result table 900 in Fig. 11, which will be described later.

[0054] <Overview of non-contact gas measurement system> FIG. 5 is a schematic perspective view showing an example of the non-contact gas measurement system 500 of FIG.

[0055] 5, the non-contact gas measurement system 500 is housed in a case 501 made of, for example, a rectangular parallelepiped, and an input unit 421 and an output unit 422 are provided on the main surface of the case 501. In the example of FIG. 5, the input unit 421 is a button.

[0056] A user inputs information such as a measurement start command and selection of a gas to be measured from this input unit 421. The input unit 421 is not limited to a button, and may be, for example, a touch panel or a keyboard.

[0057] 5, the output unit 422 is a liquid crystal display. Measurement results and the like are displayed on this output unit 422. The output unit 422 is not limited to a liquid crystal display, and may be, for example, an LED (Light Emitting Diode) or a buzzer.

[0058] The user presses a button serving as input unit 421. This starts gas measurement, and electromagnetic waves are emitted from receiving / oscillating unit 101. Alternatively, by providing multiple input units 421, it is possible to allow the user to select the type of gas 601 to be measured.

[0059] The measurement result of the measurement target gas 601 is displayed on the output unit 422. This allows the user to know the measurement result. By using an LED for the output unit 422, it is possible to present information such as green light indicating the end of measurement and red light indicating a measurement error.

[0060] Moreover, an emission port 504 is formed on a side surface 503 of the case 501. The emission port 504 emits an electromagnetic wave oscillated by the receiving and oscillating unit 101 of the non-contact gas measuring device 100. The other components of the non-contact gas measuring system 500, including the information correcting unit 200, the distance measuring unit 300, the system control unit 400, the analyzing unit 410, and the memory 430, are housed in the case 501.

[0061] The analysis unit 410 refers to past data stored in the memory 430 and analyzes changes in the condition of the user's skin based not only on measured values ​​at a certain time but also on time-series data including past history.

[0062] Here, when the non-contact gas measurement system 500 is used by multiple users, information such as a number identifying each user may be added to the memory 430 so that the measurement data of each user can be stored in a manner that allows each user to be identified.

[0063] <Examples of using the non-contact gas measurement system> FIG. 6 is an explanatory diagram showing an example of the use of the non-contact gas measurement system 500 of FIG.

[0064] When measuring the skin of a user using non-contact gas measurement system 500, the user presses input unit 421 with a finger or the like while pointing outlet 504 of case 501 in FIG. 5 toward the skin, as shown in FIG.

[0065] <Configuration Example of Information Correction Unit> FIG. 7 is an explanatory diagram showing an example of the configuration of the receiving / oscillating unit 101 and the information correcting unit 200 included in the non-contact gas measuring system 500 of FIG.

[0066] The information correcting section 200 is for the receiving / oscillating section 101 to obtain a correction wave that removes influences from sources other than the measurement target gas 601. The information correcting section 200 is formed of, for example, a mirror.

[0067] The information correction unit 200 is not limited to a mirror, but may be any reflecting object or optical element that reflects electromagnetic waves.

[0068] The information correction unit 200 is provided near an exit 504 provided in the case 501, and is provided so as to face the electromagnetic wave exit surface of the receiving and oscillating unit 101. In this case, a part of the electromagnetic wave emitted from the receiving and oscillating unit 101 hits the surface of the information correction unit 200 and is reflected. The receiving and oscillating unit 101 obtains the reflected wave of the information correction unit 200 as a correction wave.

[0069] When acquiring this correction wave, it is assumed that the target object 600 is sufficiently farther away than the measurable distance of the non-contact gas measurement system 500. In other words, it is assumed that the measurement target gas is not being measured.

[0070] Whether or not the object 600 is sufficiently far away is determined, for example, by the system control unit 400 in Fig. 4. The distance measurement unit 300 in Fig. 4 measures the distance to the object 600 when acquiring the correction wave. The measurement result is output to the system control unit 400 in Fig. 4.

[0071] When the distance measured by the distance measurement unit 300 is longer than a preset first measurement and determination distance, the system control unit 400 determines that the target object 600 is sufficiently far away. In addition, the first measurement and determination distance is stored in the memory 430, for example.

[0072] After acquiring the correction wave, the receiving / oscillating unit 101 emits an electromagnetic wave. The electromagnetic wave passes through the measurement target gas 601, hits the target object 600, and measures the reflected wave. At this time, it is assumed that the distance between the receiving / oscillating unit 101 and the target object 600 is within a measurable range, and the measurement target gas 601 can be measured.

[0073] Again, the system control unit 400 judges whether or not the distance is within the measurable distance based on the distance result measured by the distance measurement unit 300. The system control unit 400 judges that the target object 600 is sufficiently close when the distance measured by the distance measurement unit 300 is shorter than a preset second measurement and judgment distance. The second measurement and judgment distance is stored in the memory 430, for example.

[0074] The measurement wave of the target gas 601 also includes a correction wave. This is because the measurement wave of the target gas 601 includes a reflected wave that is reflected by the information correction unit 200 when the target gas 601 is measured. However, even if the measurement wave of the target gas 601 includes a correction wave, the target gas 601 can be measured with high accuracy by correcting the measurement wave using the correction wave obtained before measuring the target gas 601.

[0075] 1, the electromagnetic wave emitted by the receiving / oscillating unit 101 is converted into parallel light by using the lens 103, but it may be converted into divergent light instead of parallel light. In that case, the lens 103 is not necessary.

[0076] In the case of parallel light, the influence of errors due to the measurement position during measurement can be suppressed. In the case of divergent light, the measurable distance becomes shorter, so it is easier to obtain a correction wave that does not include information on the measurement target gas 601.

[0077] <Other configuration examples of the information correction unit> Fig. 8 is an explanatory diagram showing another example of the configuration of the receiving and oscillating unit 101 and the information correcting unit 200 included in the non-contact gas measuring system 500 of Fig. 4. Fig. 9 is an explanatory diagram following Fig. 8.

[0078] The information correcting unit 200 shown in Fig. 8 has a mirror 201 and a motor 202. The information correcting unit 200 in Fig. 7 is configured to have only a mirror, and the mirror is fixed, but the information correcting unit 200 in Fig. 8 is configured to have a mirror 201 and a motor 202.

[0079] Mirror 201 is provided near emission port 504 provided in case 501 in Fig. 5. This mirror 201 is attached so as to be rotatable around the two upper corners of mirror 201 in Fig. 8 as rotation axes.

[0080] 4. The mode signals output by the system control unit 400 include, for example, an information correction mode signal and a measurement mode signal. The information correction mode signal is a signal that is output when a correction wave is acquired, and the measurement mode signal is a signal that is output when the measurement target gas 601 is measured.

[0081] 8, the motor 202 rotates the mirror 201 to a position where the mirror 201 blocks the emission port 504. As a result, the electromagnetic wave emitted from the receiving / oscillating unit 101 is reflected by the mirror 201 and returns to the receiving / oscillating unit 101, thereby making it possible to obtain a correction wave.

[0082] 9, the motor 202 rotates the mirror 201 by about 90° to a position where the mirror 201 does not block the emission port 504. That is, the mirror 201 is removed from between the receiving and oscillating unit 101 and the object 600. As a result, the electromagnetic wave emitted from the receiving and oscillating unit 101 passes through the gas to be measured 601, hits the object 600, and is reflected, so that the receiving and oscillating unit 101 can obtain the measurement wave of the gas to be measured 601.

[0083] Example of the Control Information Management Table Configuration Next, the control information management table 800 will be explained.

[0084] FIG. 10 is an explanatory diagram showing an example of the configuration of the control information management table 800 referred to by the system control unit 400 of the non-contact gas measuring system 500 of FIG.

[0085] The control information management table 800 is a table that stores measurement control information. The measurement control information is information for measuring the measurement target gas 601, such as the frequency of the electromagnetic wave oscillated when the non-contact gas measuring device 100 measures the measurement target gas 601, and information on acquisition of the correction wave.

[0086] 10, the control information management table 800 has, from left to right, items of measurement target gas name 801, frequency 802, and information correction control 803. The measurement target gas name 801 is information for identifying the measurement target gas 601. The frequency 802 indicates the frequency at which the measurement target gas 601 is measured. The information correction control 803 is information indicating whether or not it is necessary to control the information correction unit 200 during measurement.

[0087] However, the items of the control information management table 800 are not limited to those shown in Fig. 10, and it is sufficient that information for controlling the non-contact gas measuring device 100 and the information correction unit 200 is stored. For example, the items may be voltage values ​​or current values ​​for controlling the non-contact gas measuring device 100.

[0088] The information stored in the control information management table 800 may be stored in advance in the memory 430 or the like, or may be acquired via a network, etc. In addition, the user or the like may edit the information stored in the control information management table 800.

[0089] In addition, when control of the non-contact gas measuring device 100 and the information correction unit 200 is not required, the control information management table 800 is not required. The measurement control information does not depend on the data structure and may have any data structure. In addition to the control information management table 800 in Fig. 10, the measurement control information can be stored by a data structure appropriately selected from, for example, a list or a database.

[0090] This control information management table 800 may be stored in, for example, a memory (not shown) included in the system control unit 400, instead of in the memory 430 as described above. Alternatively, it may be stored in, for example, an external storage device connected via a network.

[0091] Example of measurement result table configuration FIG. 11 is an explanatory diagram showing an example of the measurement result table 900 stored in the memory 430 of the non-contact gas measuring system 500 of FIG.

[0092] The measurement result table 900 stores the results of the non-contact gas measurement system 500 measuring the measurement target gas 601 and analyzing the measurement results.

[0093] As shown in FIG. 11, the measurement result table 900 has, from left to right, the following items: date and time 901 , name of gas to be measured 902 , frequency 903 , presence or absence of target object 904 , and value 905 .

[0094] Date and time 901 indicates the date and time of measurement or analysis. Measurement target gas name 902 indicates information for identifying the measurement target gas 601. Frequency 903 indicates the frequency used to measure the measurement target gas 601. Target presence / absence 904 indicates whether the measurement target gas 601 was measured at the time of measurement. Value 905 indicates the value of the measurement or analysis result.

[0095] However, the items in the measurement result table 900 are not limited to those in FIG. 11, and other information acquired or generated by the non-contact gas measurement system 500 may be stored.

[0096] <Example of operation of non-contact gas measurement system> Next, the measurement operation by the non-contact gas measurement system 500 will be described.

[0097] FIG. 12 is a flow chart showing an example of a measurement process of the measurement target gas 601 by the non-contact gas measurement system 500 of FIG.

[0098] In the flowchart of FIG. 12, unless otherwise specified, it is assumed that control is mainly performed by system control unit 400 in FIG.

[0099] First, the user acquires input information by operating the input / output unit 420 (step S201). The input information is, for example, a measurement start instruction issued by the user pressing a button on the input unit 421 as shown in Fig. 6. The input information input by the user is received by the system control unit 400.

[0100] When the system control unit 400 receives the input information, distance measurement is performed by the distance measurement unit 300 in FIG. 4, and a determination is started as to whether the measurement target gas 601 is within the measurement range (step S202).

[0101] Specifically, first, the system control unit 400 controls the distance measurement unit 300 to measure the distance between the receiving oscillation unit 101 and the target object 600. The system control unit 400 compares the distance measured by the distance measurement unit 300 with the first measurement judgment distance stored in the memory 430, and judges whether the measurement target gas 601 is within or outside the measurement range.

[0102] For example, assume that the measurable distance of the non-contact gas measurement system 500 is about 10 cm. In this case, the first measurement judgment distance is about 10 cm. In the measurement results, if the distance between the receiving oscillation unit 101 and the object 600 is about 5 cm, it is determined to be within the measurement range because it is shorter than the first measurement judgment distance of about 10 cm, and if the measured distance is 15 cm, it is determined to be outside the measurement range because it is longer than 10 cm.

[0103] This determination result is stored in object presence / absence 904 in measurement result table 900 in Fig. 11. As shown in Fig. 11, for example, if the determination result is within the measurement range, it is indicated as "presence," and if the determination result is outside the measurement range, it is indicated as "absence."

[0104] Next, the measurement control information is obtained from the control information management table 800 (step S203). Specifically, the system control unit 400 obtains the control information required for measuring the measurement target gas 601 from the control information management table 800 of FIG.

[0105] Using FIG. 10 as an example, when measuring transepidermal water loss as the measurement target gas 601, the information of 0.558 THz and 0.600 THz in frequency 802 and “Yes” in information correction control 803 are obtained from the row of transepidermal water loss in measurement target gas name 801.

[0106] Here, for convenience of explanation, the information is acquired from the control information management table 800, but control may be performed based on information directly input by the user via the input unit 421.

[0107] Based on the information acquired in the process of step S203, the system control unit 400 determines whether or not to control the information correction unit 200 (step S204). For example, in FIG. 10, if the information correction control 803 is "Yes" (YES), the process proceeds to step S205, and if the information correction control 803 is "No" (NO), the process proceeds to step S206.

[0108] The presence or absence of information correction control 803 depends on the configuration of the non-contact gas measurement system 500 and the measurement target gas 601. For example, in the case of the information correction unit 200 shown in Fig. 7, the information correction control is not required, so it is always "not required." On the other hand, in the case of the information correction unit 200 shown in Fig. 8, if a correction wave is required, it is "present," and if a correction wave is not required, it is "not required."

[0109] The system control unit 400 controls the information correction unit 200 (step S205). The process of step S205 depends on the configuration of the information correction unit 200. For example, in the case of the information correction unit 200 shown in FIG. 8, the system control unit 400 controls the motor 202 of the information correction unit 200 to rotate the mirror 201 and move the mirror 201 to a position where the mirror 201 blocks the emission port 504.

[0110] The system control unit 400 determines whether or not to control the frequency of the electromagnetic waves irradiated by the non-contact gas measuring device 100 based on the control information acquired in the process of step S203 (step S206).

[0111] Taking the control information management table 800 in FIG. 10 as an example, if the frequency 802 differs from the information set in the non-contact gas measuring device 100, control is necessary, so the process proceeds to step S207.

[0112] If frequency 802 is the same as the information set in the non-contact gas measuring device 100, no control is required, and the process proceeds to step S208. Specifically, when 0.558 THz is acquired from frequency 802, if the non-contact gas measuring device 100 is in a state where it can oscillate at 0.558 THz, it is left as is, but if they are different, the non-contact gas measuring device 100 is controlled in the process of step S207 so that it can oscillate at 0.558 THz. Note that if the frequency of the non-contact gas measuring device 100 is fixed, this process is not required.

[0113] Then, based on the information on frequency control in the process of step S206, the non-contact gas measuring device 100 is controlled to set the electromagnetic wave to a specific frequency (step S207). For example, the frequency of the electromagnetic wave is changed by changing the voltage or current of the transmitter / receiver 102.

[0114] This starts the measurement of the measurement target gas 601, and the receiving oscillator 101 acquires the value of the current or voltage (step S208). The measured value is stored in the value 905 of the measurement result table 900.

[0115] By referring to the control information acquired in the process of step S203, it is determined whether or not all frequencies to be measured have been measured (step S209). If there are frequencies to be measured, the process returns to the process of step S206. If the measurement of all frequencies has been completed, the measurement ends.

[0116] Specifically, in the example of FIG. 10, when it is desired to measure transepidermal water loss as the measurement target gas 601, a determination is made as to whether or not measurement has been completed at two frequencies, 0.558 THz and 0.600 THz, of frequency 802, and this is repeated until the measurement is completed.

[0117] When the measurement is completed, the analysis unit 410 performs analysis using the value 905 in the measurement result table 900 (step S210).

[0118] Specifically, upon receiving notification of the end of measurement, system control unit 400 instructs analysis unit 410 to analyze the measured data, and analysis unit 410 performs the analysis by referring to measurement result table 900 in memory 430 .

[0119] For example, the transepidermal water loss is calculated as follows.

[0120] To calculate the amount of transepidermal water loss, analysis is performed using four patterns of electromagnetic waves. The first is electromagnetic waves with a frequency that is highly sensitive to water vapor, for example, a frequency of about 0.558 THz, irradiated onto the object 600. Since the electromagnetic waves reflected from the skin return, the intensity is detected, including information on water vapor in the air, water vapor evaporated from the skin, absorption by the skin, and diffusion of internally reflected light.

[0121] The second is an electromagnetic wave with a frequency to which water vapor has high sensitivity, for example, a frequency of about 0.558 THz, irradiated onto the information correction unit 200. Only the electromagnetic wave reflected by the mirror returns, and the intensity containing information on the water vapor in the air is detected.

[0122] The third is electromagnetic waves with a frequency that is insensitive to water vapor, for example, a frequency of about 0.600 THz, irradiated onto the object 600. Since the electromagnetic waves are reflected from the skin and return, the intensity containing information on the absorption by the skin and the diffusion of the internally reflected light is detected.

[0123] The fourth is an electromagnetic wave having a frequency to which water vapor has low sensitivity, for example, a frequency of about 0.600 THz, which is irradiated onto the information corrector 200. Only the electromagnetic wave reflected by the mirror returns and can be used as a reference signal.

[0124] Both the first and second detections include attenuation due to the same water vapor in the air, so the difference between the first and second detections is the attenuation due to absorption and diffusion of internally reflected light by the skin, plus the attenuation due to water vapor evaporated from the skin.

[0125] The difference between the third and fourth values ​​is the attenuation due to absorption by the skin and the diffusion of internally reflected light. Therefore, by subtracting the difference between the third and fourth values ​​from the difference between the first and second values, the attenuation due to water vapor evaporated from the skin can be detected.

[0126] Next, system control unit 400 stores the results of the analysis performed in step S210 in memory 430 (step S211). For example, the analysis results may be stored in measurement result table 900 stored in memory 430, or may be stored in another area of ​​memory 430. The process of step S211 may be omitted and the process may proceed to step S212.

[0127] Then, system control unit 400 displays the analysis result on output unit 422. For example, as shown in Fig. 5, the analysis result is displayed on output unit 422 so that the user can recognize it (step S212).

[0128] Here, if there is a malfunction in the non-contact gas measurement system 500, the system control unit 400 detects the malfunction and outputs an alert to the output unit 422. For example, if the output unit 422 is a liquid crystal display, the contents of the alert are displayed. If the output unit 422 is a speaker or the like, the alert is conveyed by sound such as voice or a buzzer. If the output unit 422 is an LED, the alert is conveyed by light or the like.

[0129] As described above, by using a resonant tunneling diode or the like, it is possible to integrate the receiving / oscillating unit 101 that irradiates and receives electromagnetic waves with a simple configuration, and it is possible to reduce the size of the non-contact gas measuring device 100.

[0130] Furthermore, since the target object 600 is irradiated with electromagnetic waves and the target gas 601 is measured based on the strength of the reflected waves, the receiving / oscillating unit 101 can be separated from the target object 600, that is, the measurement can be performed without contacting the skin surface.

[0131] This allows measurement without having to place the non-contact gas measuring device 100 in close contact with the skin of the user, and therefore allows for highly accurate measurement without limiting the measurement location. In addition, the burden on the affected area of ​​the user can be reduced.

[0132] Furthermore, by measuring the gas to be measured using the corrected wave from the information corrector 200, the measurement accuracy of the non-contact gas measuring system 500 can be improved.

[0133] (Embodiment 2) <Configuration example of reception oscillator and information corrector> In the second embodiment, another configuration example of the receiving oscillator and the information corrector will be described.

[0134] FIG. 13 is an explanatory diagram showing an example of the configuration of the receiving oscillators 101 and 101a and the information corrector 200 according to the second embodiment.

[0135] In FIG. 7 of the first embodiment, a single receiving and oscillating unit 101 is used to acquire both the measurement wave and the correction wave, whereas in FIG. 13, in addition to the first receiving and oscillating unit 101, a second receiving and oscillating unit 101a is newly provided.

[0136] 13, the receiving and oscillating unit 101 is used when measuring the measurement target gas 601, and the receiving and oscillating unit 101a is used when measuring the correction wave. Note that the rest of the configuration of the non-contact gas measuring system 500 is similar to that of the first embodiment shown in FIG. 4, and therefore a description thereof will be omitted.

[0137] The information correcting unit 200 is made of, for example, a mirror and is provided so as to face the electromagnetic wave emission surface of the receiving and oscillating unit 101a. The information correcting unit 200 acquires a correction wave for the receiving and oscillating unit 101a to remove the influence of gases other than the measurement target gas 601. The receiving and oscillating unit 101a irradiates the information correcting unit 200 with an electromagnetic wave and acquires the reflected wave as the correction wave.

[0138] The receiving / oscillating unit 101 irradiates an electromagnetic wave to an object 600 to be measured, receives the reflected wave irradiated by the object 600, and obtains a current or voltage value according to the intensity of the received reflected wave. The electromagnetic wave emitted from the receiving / oscillating unit 101 passes through the gas 601 to be measured, hits the object 600, is reflected, and returns to measure the measurement wave.

[0139] As described above, by providing the receiving and oscillating unit 101a, the correction wave can be obtained more accurately. As a result, the measurement target gas 601 can be measured with higher accuracy, and the reliability of the non-contact gas measuring system 500 can be improved.

[0140] (Embodiment 3) In the third embodiment, a configuration in which a non-contact gas measurement system 500 is provided in a mobile terminal, for example, a smartphone or a tablet, will be described.

[0141] <Example of a mobile terminal configuration> FIG. 14 is an explanatory diagram showing an example of the configuration of portable terminal 560 according to the third embodiment.

[0142] The mobile terminal 560 is composed of a non-contact gas measurement system 500, an imaging unit 440, and a communication unit 450. The non-contact gas measurement system 500 has a similar configuration to the non-contact gas measurement system 500 of the first embodiment shown in FIG.

[0143] The imaging unit 440 is a camera that captures images. The imaging unit 440 is used for a technique for matching measurement positions and a technique for identifying measurements, which will be described later. The communication unit 450 is wirelessly connected to a communication line, such as an Internet line or a telephone communication line, and communicates with the outside.

[0144] 14 shows an example in which the communication unit 450 is connected to an externally connected server 460. The communication unit 450 transmits and receives information acquired by, for example, the non-contact gas measuring device 100, the distance measurement unit 300, and the imaging unit 440 to and from the server 460.

[0145] The imaging unit 440 may be, for example, an R (Red) G (Green) B (Blue) camera having sensitivity to visible light wavelengths, an infrared camera having sensitivity to infrared light, or an RGB camera having sensitivity to wavelengths from infrared light to visible light, or an RGB camera having sensitivity to wavelengths from visible light to ultraviolet light, or from infrared light via visible light to ultraviolet light.

[0146] The input / output unit 420 of the non-contact gas measuring system 500 may be an input / output unit such as a touch panel of the mobile terminal 560 .

[0147] In FIG. 14, the non-contact gas measurement system 500 is provided in a mobile terminal 560 such as a smartphone. However, for example, the non-contact gas measurement system 500 may be configured to newly add an imaging unit 440 and a communication unit 450, which are functions of the mobile terminal 560.

[0148] <Example of a mobile device> Fig. 15 is an explanatory diagram showing an example of an overview of portable terminal 560 in Fig. 14. Fig. 15(a) shows the front side of portable terminal 560, and Fig. 15(b) shows the rear side of portable terminal 560. Here, the surface on which input / output unit 420 is provided is the front side of portable terminal 560, and the surface opposite thereto is the rear side.

[0149] In the example of Figure 15, imaging unit 440 is configured to be able to capture images from both the front side of mobile terminal 560 shown in Figure 15(a) and the back side of mobile terminal 560 shown in Figure 15(b).

[0150] Similarly, in the example of Figure 15, the receiving / oscillating unit 101 is configured to be able to irradiate and receive electromagnetic waves from either the front side of the mobile terminal 560 shown in Figure 15(a) or the back side shown in Figure 15(b).

[0151] <Example of input / output section display> FIG. 16 is an explanatory diagram showing an example of a display by input / output unit 420 of mobile terminal 560 of FIG.

[0152] In this case, the input / output unit 420 is, for example, a touch panel display. The input / output unit 420 displays, for example, a menu screen for allowing the user to select a measurement target as shown in Fig. 16(a) and images captured by the imaging unit 440 and analysis results as shown in Fig. 16(b).

[0153] The menu screen shown in Fig. 16(a) displays the names of measurable measurement target gases so that the user can select one. By associating the menu buttons with the control information management table 800 in Fig. 10 of the first embodiment, the measurement target gas 601 selected by the user can be easily added to the input information in the process of step S201 in Fig. 12, for example.

[0154] As a result of the measurement, as shown in FIG. 16(b), for example, a graph showing the amount of transepidermal water loss over time, a measurement position marker showing the previous measurement position acquired by the imaging unit 440, or the like may be displayed on the input / output unit 420.

[0155] <Example of mobile terminal operation> FIG. 17 is a flowchart showing an example of the operation of gas measurement by the mobile terminal 560 of FIG.

[0156] First, input information is acquired (step S301). The process of step S301 is the same as the process of step S201 in Fig. 12 of the first embodiment. Next, imaging unit 440 captures an image of the measurement site of the user, and system control unit 400 analyzes the captured image (step S302).

[0157] This makes it possible to match the measurement position with the previous location, and to recognize whether the measurement by the receiving and oscillating section 101 is performed on the front or back surface of the mobile terminal 560.

[0158] A technique for matching measurement positions will now be described.

[0159] When performing long-term monitoring, it is desirable to align the measurement position and measure approximately the same part. Therefore, the measurement part is identified from the image results captured by the imaging unit 440 last time or up to now, and the result is displayed on the output unit 422 to inform the user.

[0160] A measurement position marker may be displayed on the input / output unit 420, or a speaker or the like may be used to notify information about the difference between the measurement position marker and the current position captured by the imaging unit 440 through sound, such as a change in pitch, a change in volume, or voice.

[0161] A technique for identifying whether the measurement by the receiving oscillator 101 is being performed on the front or back surface of the mobile terminal 560 will be described.

[0162] For example, it is determined whether the object 600 was photographed by the imaging unit 440 in Figure 15(a), i.e., the front side of the mobile terminal 560, or whether the object 600 was photographed by the imaging unit 440 in Figure 15(b), i.e., the back side of the mobile terminal 560, and measurement is performed by the receiving oscillation unit 101 on the side where the image was photographed.

[0163] This allows easy imaging whether the measurement target gas 601 is in front of the mobile terminal or on the back. Specifically, when measuring the arm, the receiving / oscillating unit 101 on the back side in Fig. 15(b) is used, and when measuring the face, etc., the receiving / oscillating unit 101 on the front side in Fig. 15(a) is used. This allows the user to perform measurements while looking at the display, which is the input / output unit 420.

[0164] 17, when the analysis of the image is completed, the measurement target gas 601 is measured (step S303). The process of this step S303 is similar to the processes of steps S202 to S209 in FIG.

[0165] Then, the measurement results are transmitted (step S304). The system control unit 400 transfers the measurement results and the like to the externally connected server 460 via the communication unit 450. Thereafter, the server 460 analyzes the transferred measurement results (step S305).

[0166] Specifically, the measurement result acquired in the process of step S304 and the image analysis result acquired in the process of step S302 are transmitted from the communication unit 450 to the server 460. The server 460 executes all or part of the complex analysis. The specific process is the same as the process of step S210 in Fig. 12. This can reduce the processing load of the non-contact gas measurement system 500.

[0167] Communication unit 450 acquires the results analyzed by server 460 (step S306). System control unit 400 displays the results acquired from server 460 on input / output unit 420 (step S307). At this time, system control unit 400 stores the results acquired from server 460 in memory 430.

[0168] Thus, by providing the non-contact gas measurement system 500 in the mobile terminal 560, it is possible to further improve the convenience for the user. In addition, since the measurement target gas 601 is analyzed by the external server 460, the measurement target gas 601 can be analyzed in a shorter time.

[0169] Furthermore, since the non-contact gas measurement system 500 does not require a function for analyzing the measurement target gas 601, the configuration of the non-contact gas measurement system 500 can be simplified, which also contributes to miniaturization and cost reduction.

[0170] Although the invention made by the present inventor has been specifically described based on the embodiment, the present invention is not limited to the above-mentioned embodiment and includes various modified examples. For example, if a monocular camera capable of simultaneously acquiring a color image and a distance image is used, the functions of the imaging unit 440 and the distance measurement unit 300 in Fig. 14 can be realized, and therefore a small-sized and low-cost non-contact gas measurement system can be realized. [Explanation of symbols]

[0171] 100 Non-contact gas measuring device 101 Receiving oscillator 101a Receiving oscillator 102 Transmitter / Receiver 103 Lens 110 Control section 200 Information Correction Department 201 Mirror 202 Motor 300 Distance measurement unit 400 System control section 401 System Bus 410 Analysis Department 420 Input / output section 421 Input section 422 Output section 430 Memory 440 Imaging unit 450 Communications Department 460 Server 500 Non-contact Gas Measurement System 560 Mobile Devices 600 objects 601 Gases to be measured

Claims

1. In the skin analysis system, A non-contact gas measuring device that measures a target gas emitted from a subject's skin by using electromagnetic waves; an analysis unit that analyzes the measurement target gas from a measurement value measured by the non-contact gas measuring device; a system control unit that controls operations of the non-contact gas measuring device and the analysis unit; A display unit; having The non-contact gas measuring device comprises: An electronic device that oscillates electromagnetic waves in the negative resistance region, Irradiating the skin of the subject with the electromagnetic waves, and outputting to the analysis unit, as a measurement value, a voltage or current value that changes according to the intensity of the electromagnetic waves reflected from the skin of the subject; A skin analysis system, wherein the display unit displays information regarding the condition of the skin as a result based on the analysis by the analysis unit.

2. In the skin analysis system, A non-contact gas measuring device that measures a target gas emitted from a subject's skin by using electromagnetic waves; an analysis unit that analyzes the measurement target gas from a measurement value measured by the non-contact gas measuring device; a system control unit that controls operations of the non-contact gas measuring device and the analysis unit; A display unit; having The non-contact gas measuring device comprises: Irradiating the skin of the subject with the electromagnetic waves, and outputting to the analysis unit, as a measurement value, a voltage or current value that changes according to the intensity of the electromagnetic waves reflected from the skin of the subject; The display unit displays information about a skin condition as a result based on the analysis by the analysis unit, A skin analysis system comprising an information correction unit that acquires a correction electromagnetic wave for correcting the measurement value measured by the non-contact gas measuring device.

3. The skin analysis system according to claim 2, the information correction unit has a reflector that reflects electromagnetic waves, A skin analysis system in which the electromagnetic wave emitted by the non-contact gas measuring device is reflected by the reflecting object to obtain a corrected electromagnetic wave that does not contain information about the gas to be measured.

4. The skin analysis system according to claim 2, The non-contact gas measuring device includes a first receiving / oscillating unit and a second receiving / oscillating unit, the first receiving and oscillating unit irradiates an electromagnetic wave onto the skin of the subject and measures the measurement value; The second receiving and oscillating unit irradiates the information correcting unit with an electromagnetic wave to obtain a corrected electromagnetic wave that does not include information about the gas to be measured.

5. The skin analysis system according to claim 2, a distance measuring unit that measures a distance to the skin of the subject; The system control unit compares the distance measured by the distance measurement unit with a predetermined first measurement judgment distance, and if the measured distance is longer than the first measurement judgment distance, irradiates electromagnetic waves from the non-contact gas measuring device and obtains them as the corrected electromagnetic waves.

6. A skin analysis device, comprising: A communication unit for connecting to a communication network; an output unit that outputs information; An imaging unit that acquires an image; A non-contact gas measuring device that measures a target gas emitted from a subject's skin by using electromagnetic waves; an analysis unit that analyzes the measurement target gas from a measurement value measured by the non-contact gas measuring device; A system control unit that controls the operation of the skin analysis device; A display unit; Equipped with The non-contact gas measuring device comprises: Irradiating the skin of the subject with the electromagnetic waves, and outputting to the analysis unit, as a measurement value, a voltage or current value that changes according to the intensity of the electromagnetic waves reflected from the skin of the subject; the display unit displays information about a skin condition as a result based on the analysis by the analysis unit; the system control unit recognizes the measurement site when the target gas was previously measured from an image of the subject's skin captured by the imaging unit when measuring the target gas, and outputs information indicating the measurement site to the output unit when measuring the target gas for the first time.

7. A non-contact gas measuring device that measures a target gas emitted from a subject's skin by using electromagnetic waves; an analysis unit that analyzes a measurement value of an electromagnetic wave measured by the non-contact gas measuring device; a system control unit that controls operations of the non-contact gas measuring device and the analysis unit; A display unit; A skin analysis method using a skin analysis system comprising: The non-contact gas measuring device irradiates electromagnetic waves onto the skin of the subject; a step of receiving electromagnetic waves reflected from the skin of the subject by the non-contact gas measuring device, and outputting a voltage or current value that changes according to the intensity of the received electromagnetic waves to the analysis unit as a measurement value; displaying information about a skin condition as a result based on the analysis by the analysis unit by the display unit; having The skin analysis system includes a distance measurement unit that measures a distance to the skin of the subject, a step of determining whether or not the distance between the skin of the subject measured by the distance measurement unit is within a measurement range of the measurement target gas; The analysis unit analyzes the measurement target gas from a measurement value measured by the non-contact gas measuring device; a step of controlling the non-contact gas measuring device to irradiate electromagnetic waves to the skin of the subject when the system control unit determines that the subject is within a measurement range; A skin analysis method comprising:

8. A non-contact gas measuring device that measures a target gas emitted from a subject's skin by using electromagnetic waves; an analysis unit that analyzes a measurement value of an electromagnetic wave measured by the non-contact gas measuring device; a system control unit that controls operations of the non-contact gas measuring device and the analysis unit; A display unit; A skin analysis method using a skin analysis system comprising: The non-contact gas measuring device irradiates electromagnetic waves onto the skin of the subject; a step of receiving electromagnetic waves reflected from the skin of the subject by the non-contact gas measuring device, and outputting a voltage or current value that changes according to the intensity of the received electromagnetic waves to the analysis unit as a measurement value; displaying information about a skin condition as a result based on the analysis by the analysis unit by the display unit; having the skin analysis system includes an information correction unit that acquires a correction electromagnetic wave for correcting the measurement value measured by the non-contact gas measuring device, The step of analyzing the gas to be measured comprises correcting an error in the measurement value using a corrected electromagnetic wave acquired by the information correcting unit.

9. A non-contact gas measuring device that measures a target gas emitted from a subject's skin by using electromagnetic waves; an analysis unit that analyzes a measurement value of an electromagnetic wave measured by the non-contact gas measuring device; a system control unit that controls operations of the non-contact gas measuring device and the analysis unit; A display unit; A skin analysis method using a skin analysis system comprising: The non-contact gas measuring device irradiates electromagnetic waves onto the skin of the subject; a step of receiving electromagnetic waves reflected from the skin of the subject by the non-contact gas measuring device, and outputting a voltage or current value that changes according to the intensity of the received electromagnetic waves to the analysis unit as a measurement value; displaying information about a skin condition as a result based on the analysis by the analysis unit by the display unit; having a step of the system control unit recognizing a measurement site at which the measurement target gas was previously measured from the acquired image of the skin of the subject; a step of the system control unit outputting information indicating the measurement site when the measurement target gas is newly measured; A skin analysis method comprising:

Images