WO2019208596A1 - Dispositif de mesure de gaz sans contact, système de mesure de gaz sans contact et procédé de mesure de gaz sans contact - Google Patents

Dispositif de mesure de gaz sans contact, système de mesure de gaz sans contact et procédé de mesure de gaz sans contact Download PDF

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Publication number
WO2019208596A1
WO2019208596A1 PCT/JP2019/017312 JP2019017312W WO2019208596A1 WO 2019208596 A1 WO2019208596 A1 WO 2019208596A1 JP 2019017312 W JP2019017312 W JP 2019017312W WO 2019208596 A1 WO2019208596 A1 WO 2019208596A1
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Prior art keywords
electromagnetic wave
unit
measurement
contact gas
reception
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PCT/JP2019/017312
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English (en)
Japanese (ja)
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幸修 田中
美沙子 河野
啓太 山口
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マクセル株式会社
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3581—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using far infrared light; using Terahertz radiation
    • G01N21/3586—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using far infrared light; using Terahertz radiation by Terahertz time domain spectroscopy [THz-TDS]

Definitions

  • the present invention relates to a non-contact gas measurement device, a non-contact gas measurement system, and a non-contact gas measurement method, and more particularly to a technique effective for non-contact gas measurement of a skin surface.
  • Patent Document 1 JP 2002-263072
  • JP 2010-172543 Patent Document 2
  • JP 2010-169658 Patent Document 3
  • Japanese Patent Laid-Open No. 2004-228561 describes as a problem “Providing a moisture transpiration measuring device that is capable of measuring with sufficient and sufficient accuracy, and is small, light, inexpensive, and easy to handle.” “A circuit board is arranged inside the frame to be in contact with the skin surface, and only one capacitive polymer thin film humidity sensor is arranged on the circuit board as a humidity detecting element. The driving circuit of the humidity detecting element is also a circuit board. The amount of moisture transpiration is calculated from the circuit output taken out through the handle shaft.Because only one humidity detection element is used, the number of parts is reduced and the assembly is reduced compared to the case of using two humidity detection elements. "Coordination and maintenance costs will be lower.”
  • Patent Document 2 has a description as “Providing a device for estimating the amount of transdermal moisture transpiration easily and accurately, and further evaluating the skin barrier function based on this”, and means for solving the problem.
  • a main body an application electrode installed on the main body that can apply a plurality of AC voltages, and a susceptance (B), admittance (Y), or conductance (G) installed on the main body are detected.
  • Patent Document 3 has a description that “a gas supplied from a gas supply site is efficiently analyzed” as a problem, and “a capture film 3 that captures a gas (for example, porous)
  • the gas for example, skin gas generated from the human body
  • the gas captured by the capture film and the terahertz wave or infrared light generated from the generation unit interact with each other.
  • a capture unit (a member composed of a capture film and a collection container) capable of arranging a film is provided, and the capture unit can contact a portion for supplying the gas (for example, a human body such as an arm or a hand).
  • the structure is provided so as to maintain the capture film and the portion 1 in a non-contact state ”.
  • the human skin not only adjusts the environment and temperature in the living body through skin respiration and sweating, but also plays a role in protecting internal tissues from external stimuli such as foreign substances, bacteria, or microorganisms.
  • the amount of water inside the skin and the amount of water transpirated from the skin from the standpoint of health maintenance such as prevention of heat stroke and prevention of dry skin due to atopic dermatitis, or from practical viewpoints such as evaluation of cosmetics and pharmaceuticals, and beauty. It is important to obtain information on the so-called transdermal moisture transpiration rate.
  • the transdermal moisture transpiration is of great interest as an index for evaluating the skin barrier function that protects the living body from external stimuli and protects the moisture from transpiration outside the body.
  • Patent Document 1 In the measurement of transcutaneous moisture transpiration, a technique (for example, Patent Document 1) that measures the amount of moisture lost from the skin surface using, for example, a humidity sensor is known.
  • This technique requires a mechanism that stabilizes a humidity sensor that measures the amount of moisture lost from the skin surface. For this reason, there is a problem that the measuring instrument becomes expensive and large.
  • the measuring instrument since it is a contact type in which a part of the measurement device is brought into contact with an object, i.e., skin, for measurement, the surface of the patient's skin may be affected or damaged during measurement. Considering the influence on the patient's skin, the measurement location is limited.
  • Patent Document 2 there is a technique (for example, Patent Document 2) that evaluates the skin barrier function in a small size and at low cost by measuring the electrical properties of the skin. Similar to Patent Document 1, it is necessary to bring a part of the measuring device into contact with the skin, which is the measurement part, in order to measure the electrical properties of the object.
  • Patent Document 3 a technique for capturing skin gas and measuring the captured skin gas using electromagnetic waves.
  • a light source and a detector that generate infrared light and the like are necessary for capturing and measuring skin gas as a configuration of the measurement device. Therefore, there is a problem that the apparatus configuration is complicated and large.
  • An object of the present invention is to provide a technique capable of measuring gas from an object with a simple configuration without affecting the user's skin and the like.
  • a typical non-contact gas measurement system has a non-contact gas measurement device, an analysis unit, and a system control unit.
  • the non-contact gas measuring device measures a measurement target gas emitted from an object using electromagnetic waves.
  • An analysis part analyzes measurement object gas from the measured value which the non-contact gas measuring device measured.
  • the system control unit controls operations of the non-contact gas measuring device and the analysis unit.
  • the non-contact gas measuring device includes a reception oscillation unit, an electromagnetic wave irradiation unit, an optical element, and a control unit.
  • the reception oscillation unit emits and detects electromagnetic waves.
  • the electromagnetic wave irradiation unit emits an electromagnetic wave having a frequency different from that of the electromagnetic wave emitted from the reception oscillation unit.
  • the optical element changes the transmittance based on the electromagnetic wave emitted from the electromagnetic wave irradiation unit, and transmits or reflects the electromagnetic wave emitted from the reception oscillation unit.
  • the control unit controls the reception oscillation unit and the electromagnetic wave irradiation unit.
  • control unit stops the electromagnetic wave of the electromagnetic wave irradiation unit when measuring the object, changes the transmittance so that the optical element functions as a transmission plate, and irradiates the object with the electromagnetic wave transmitted through the optical element.
  • the reception oscillating unit outputs a voltage or current value that changes according to the intensity of the electromagnetic wave reflected from the object as a measurement value to the analysis unit.
  • the control unit when acquiring a corrected electromagnetic wave for correcting a measurement value, the control unit emits the electromagnetic wave from the electromagnetic wave irradiation unit, changes the transmittance so that the optical element functions as a reflector, and reflects the electromagnetic wave from the optical element. To control.
  • the reception oscillation unit outputs a voltage or current value that changes according to the intensity of the electromagnetic wave reflected from the optical element as a correction value to the analysis unit.
  • the non-contact gas measuring device and the non-contact gas measuring system can be miniaturized.
  • FIG. 5 is an explanatory diagram illustrating an example of a configuration of a reception oscillation unit and an information correction unit included in the non-contact gas measurement system of FIG. 4. It is explanatory drawing which shows the other structural example in the reception oscillation part and information correction
  • FIG. 6 is an explanatory diagram illustrating an example of a configuration in a reception oscillation unit and an information correction unit according to Embodiment 2.
  • FIG. 10 is an explanatory diagram illustrating an example of a configuration of a mobile terminal according to Embodiment 3.
  • FIG. It is explanatory drawing which shows an example of the external appearance of the portable terminal of FIG. It is explanatory drawing which shows an example of the display by the input / output part which the portable terminal of FIG. 15 has. It is a flowchart which shows an example in the operation
  • FIG. 10 is an explanatory diagram illustrating an example of film thickness measurement by a non-contact gas measurement device according to Embodiment 5. It is explanatory drawing explaining the principle of the film thickness measurement in the target object of FIG.
  • FIG. 1 is an explanatory diagram showing an example of the configuration of the non-contact gas measuring apparatus 100 according to the first embodiment.
  • the non-contact gas measuring device 100 measures the measurement target gas 601 emitted from the target 600 using electromagnetic waves.
  • the non-contact gas measuring device 100 includes a reception oscillation unit 101 and a control unit 110 as shown in FIG.
  • the reception oscillating unit 101 has a configuration in which the oscillation and reception of electromagnetic waves are united, and emits and detects electromagnetic waves.
  • the reception oscillation unit 101 includes a transmitter / receiver 102 and a lens 103.
  • the transmitter / receiver 102 oscillates and receives electromagnetic waves.
  • the lens 103 irradiates the object 600 with the electromagnetic waves oscillated by the transmitter / receiver 102 as parallel light, and collects the reflected wave from the object 600.
  • the electromagnetic wave oscillated by the transmitter / receiver 102 is irradiated perpendicularly to the object 600, thereby passing through the measurement target gas 601 and returning the reflected wave to the receiver / transmitter 102.
  • the object 600 is a user's skin or the like.
  • the control unit 110 controls the reception oscillation unit 101.
  • the electromagnetic wave oscillated by the reception oscillation unit 101 uses a frequency that is easily absorbed by gas.
  • a frequency such as about 0.56 THz or about 0.75 THz is suitable.
  • the transmitter / receiver 102 is, for example, an electronic device that oscillates electromagnetic waves in a negative resistance region, and is, for example, a resonant tunnel diode.
  • a resonant tunnel diode is shown for convenience, but the transmitter / receiver is not limited to this.
  • a device that oscillates electromagnetic waves such as a laser may be used.
  • a device that oscillates at a frequency of about 0.56 THz or 0.75 THz for example, a quantum cascade laser or a resonant tunneling diode is used.
  • FIG. 2 is an explanatory diagram illustrating an example of characteristics of the transmitter / receiver 102 included in the non-contact gas measuring device 100 of FIG.
  • FIG. 2 shows the relationship between the intensity of the reflected wave from the object 600 and the current flowing between the terminals of the transmitter / receiver 102.
  • the electromagnetic wave oscillated from the receiver / transmitter 102 is reflected as the reflected wave. This is an example of a phenomenon that affects the oscillation characteristics of the transmitter / receiver 102 when returning to 102.
  • an electromagnetic wave oscillates in the negative resistance region by applying a specific voltage between the terminals of the resonant tunnel diode.
  • Non-patent document Masahiro Asada and Safumi Suzuki 2015 Jpn. J. et al. Appl. Phys. 54 070309 describes that the current flowing between the terminals of the oscillator changes when the reflectivity of the reflector is different.
  • the inventor of the present invention pays attention to the fact that this phenomenon can be applied to non-contact gas measurement by making the attenuation indicated by the absorption of electromagnetic waves in the measurement target gas what is shown as the reflectance of the reflecting object in the above-mentioned non-patent literature. did.
  • the transmitter / receiver 102 oscillates an electromagnetic wave, and a difference occurs in the current flowing through the transmitter / receiver 102 according to the intensity of the reflected wave that is reflected from the object 600 and returns to the receiver / transmitter 102. . Since the intensity of the reflected wave changes depending on the amount of the measurement target gas 601 in the electromagnetic wave path, it is possible to perform gas measurement using a difference in current or voltage applied to the transmitter / receiver 102.
  • the measurement target gas 601 is measured from the correlation between the absorption and amount by the gas. It becomes possible to do.
  • the graph shown in FIG. 2 is an example, and the data structure is not limited to this.
  • the configuration showing the relationship between the measured current value and the measurement target gas for example, information such as a table configuration If it is.
  • FIG. 3 is a flowchart showing an example of the gas measurement operation by the non-contact gas measuring device 100 of FIG.
  • the control unit 110 controls the reception oscillation unit 101 to irradiate the measurement target object 600 with an electromagnetic wave having a preset frequency (step S101).
  • the non-contact gas measuring device 100 only needs to irradiate the electromagnetic wave toward the target object 600, so that the non-contact gas measuring device 100 does not need to be in close contact with the target object 600 such as skin.
  • gas measurement is performed with a distance between the non-contact gas measurement device 100 and the object 600.
  • the electromagnetic wave irradiated perpendicularly to the object 600 passes through the measurement target gas 601 and is irradiated to the object 600, and the reflected wave is condensed on the lens 103 and returns to the transmitter / receiver 102.
  • the control unit 110 acquires a current or voltage value corresponding to the intensity of the reflected wave received by the reception oscillation unit 101 (step S102).
  • the gas measurement can be performed without bringing the non-contact gas measurement device 100 into close contact with the object 600 as described above, the influence on the skin surface of the patient at the time of measurement can be reduced. Further, since it is not necessary to consider the influence on the skin or the like, the measurement location is not limited, and an accurate measurement result can be obtained easily.
  • the intensity of the reflected wave in FIG. 2 can be replaced with the concentration of the measurement target gas 601 by quantitatively measuring the value in advance.
  • the concentration of the measurement target gas 601 can be calculated using the current value or the voltage value measured in the process of step S102. Further, it is possible to convert the change in the measurement target gas 601 by comparing with the result of the current or voltage measured in the past.
  • FIG. 4 is an explanatory diagram showing an example of a configuration in a non-contact gas measurement system 500 using the non-contact gas measurement device 100 of FIG.
  • the non-contact gas measurement system 500 includes a 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.
  • the non-contact gas measurement device 100, the information correction unit 200, the distance measurement unit 300, the system control unit 400, the analysis unit 410, the input / output unit 420, and the memory 430 are connected to each other by a system bus 401.
  • the configuration and operation of the non-contact gas measuring device 100 are the same as those in FIG.
  • the information correction unit 200 acquires a correction wave that reduces measurement errors due to the environment.
  • This correction wave is an electromagnetic wave.
  • the measurement value may be affected because the amount of water vapor in the air varies depending on the environment in which the user exists. For this reason, the influence of water vapor due to the environment is removed using the correction wave acquired by the information correction unit 200.
  • the distance measuring unit 300 measures the distance from the distance measuring unit 300 to the object 600.
  • the system control unit 400 acquires various data and controls the non-contact gas measurement system 500.
  • the system control unit 400 controls the non-contact gas measurement device 100 with reference to a control information management table 800 shown in FIG. 10 described later when measuring the measurement target gas 601.
  • the analysis unit 410 analyzes the measured value of the detected electromagnetic wave.
  • the input / output unit 420 is an interface with a user, and includes an input unit 421 and an output unit 422 shown in FIG.
  • the input unit 421 is, for example, a button
  • the output unit 422 is, for example, a display unit.
  • the memory 430 is composed of, for example, a non-volatile semiconductor memory exemplified by a flash memory, and stores received data, analysis results, and the like.
  • a control information management table 800 shown in FIG. 10 and a measurement result table 900 shown in FIG. 11 are stored.
  • FIG. 5 is a schematic perspective view showing an example of the non-contact gas measurement system 500 of FIG.
  • the non-contact gas measurement system 500 is accommodated 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.
  • the input unit 421 is a button.
  • the user inputs information such as a measurement start instruction and measurement target gas selection from the input unit 421.
  • the input unit 421 is not limited to a button, and may be a touch panel or a keyboard, for example.
  • the output unit 422 is a liquid crystal display in the example of FIG.
  • the output unit 422 displays the measurement result and the like.
  • 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.
  • the measurement result of the measurement target gas 601 is displayed on the output unit 422. Thereby, the user can know the measurement result.
  • an LED for the output unit 422 for example, information such as the end of measurement of green light emission and the measurement error of red light emission can be presented.
  • an exit 504 is formed on the side surface 503 of the case 501.
  • the emission port 504 emits an electromagnetic wave oscillated by the reception oscillation unit 101 included in the non-contact gas measurement device 100.
  • the information correction unit 200, the distance measurement unit 300, the system control unit 400, the analysis unit 410, and the memory 430 constituting the other non-contact gas measurement system 500 are housed in the case 501.
  • the analysis unit 410 refers to the past data stored in the memory 430 and analyzes the change in the state of the user's skin as time-series data including not only the measurement value at a certain time but also the past history.
  • the non-contact gas measurement system 500 when used by a plurality of users, for example, information such as a number specifying each user can be added to the memory 430 to identify measurement data of a plurality of users. You may hold it like this.
  • FIG. 6 is an explanatory diagram showing an example when the non-contact gas measurement system 500 of FIG. 5 is used.
  • the user When measuring the user's skin using the non-contact gas measurement system 500, as shown in FIG. 6, the user directs the input unit 421 with a finger or the like while pointing the exit 504 of the case 501 in FIG. Press.
  • FIG. 7 is an explanatory diagram illustrating an example of a configuration of the reception oscillation unit 101 and the information correction unit 200 included in the non-contact gas measurement system 500 of FIG.
  • the information correction unit 200 is for the reception oscillation unit 101 to acquire a correction wave that eliminates the influence other than the measurement target gas 601.
  • the information correction unit 200 is configured by a mirror, for example.
  • amendment part 200 is not limited to a mirror, What is necessary is just a reflector, an optical element, etc. which reflect electromagnetic waves.
  • the information correction unit 200 is provided in the vicinity of the emission port 504 provided in the case 501, and is provided so as to face the emission surface of the electromagnetic wave in the reception oscillation unit 101. In this case, some of the electromagnetic waves emitted from the reception oscillation unit 101 are reflected by the surface of the information correction unit 200. The reception oscillation unit 101 acquires the reflected wave from the information correction unit 200 as a correction wave.
  • Whether or not the object 600 is sufficiently separated is determined by, for example, the system control unit 400 of FIG.
  • the distance measuring 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.
  • the system control unit 400 determines that the object 600 is sufficiently separated when the distance measured by the distance measurement unit 300 is longer than a preset first measurement determination distance. Further, the first measurement determination distance is stored in the memory 430, for example.
  • the reception oscillation unit 101 After obtaining the correction wave, the reception oscillation unit 101 emits an electromagnetic wave.
  • the electromagnetic wave passes through the measurement target gas 601 and hits the target object 600, and the reflected wave is measured. At this time, it is assumed that the distance between the reception oscillation unit 101 and the object 600 is within a measurable distance and the measurement target gas 601 can be measured.
  • the system control unit 400 determines whether or not the distance is measurable from the distance result measured by the distance measurement unit 300.
  • the system control unit 400 determines that the object 600 is sufficiently approached when the distance measured by the distance measurement unit 300 is shorter than the preset second measurement determination distance.
  • the second measurement determination distance is stored in the memory 430, for example.
  • the measurement wave of the measurement target gas 601 includes a correction wave. This is because a reflected wave reflected on the information correction unit 200 when the measurement target gas 601 is measured is included. However, even if a correction wave is included in the measurement wave of the measurement target gas 601, the measurement target gas 601 is measured with high accuracy by performing correction using the correction wave acquired before the measurement target gas 601 is measured. be able to.
  • the electromagnetic wave emitted from the reception oscillating unit 101 is converted into parallel light using the lens 103 as shown in FIG. 1, but it may be divergent light without being converted into parallel light. In that case, the lens 103 becomes unnecessary.
  • FIG. 8 is an explanatory diagram illustrating another configuration example of the reception oscillation unit 101 and the information correction unit 200 included in the non-contact gas measurement system 500 of FIG.
  • FIG. 9 is an explanatory diagram following FIG.
  • the information correction unit 200 shown in FIG. 7 is only a mirror and the mirror is fixed. However, the information correction unit 200 in FIG. 8 includes a mirror 201 and a motor 202.
  • the mirror 201 is provided in the vicinity of the emission port 504 provided in the case 501 of FIG. In FIG. 8, the mirror 201 is attached so as to be rotatable about two corners above the mirror 201 as a rotation axis.
  • the motor 202 rotates the mirror 201 based on a mode signal output from, for example, the system control unit 400 of FIG.
  • Examples of the mode signal output by the system control unit 400 include an information correction mode signal and a measurement mode signal.
  • the information correction mode signal is a signal output when acquiring a correction wave
  • the measurement mode signal is a signal output when measuring the measurement target gas 601.
  • the motor 202 rotates the mirror 201 as shown in FIG. 8 and moves the mirror 201 to a position where the output port 504 is shielded.
  • the electromagnetic wave emitted from the reception oscillation unit 101 is reflected by the mirror 201, and a correction wave can be acquired by returning to the reception oscillation unit 101.
  • the motor 202 rotates the mirror 201 by about 90 ° as shown in FIG. 9 and moves the mirror 201 to a position where the mirror 201 does not block the emission port 504. That is, the mirror 201 is removed from between the reception oscillation unit 101 and the object 600. As a result, the electromagnetic wave emitted from the reception oscillation unit 101 passes through the measurement target gas 601 and is reflected by the target 600, so that the reception oscillation unit 101 can acquire the measurement wave of the measurement target gas 601. .
  • control information management table 800 ⁇ Configuration example of control information management table> Next, the control information management table 800 will be described.
  • FIG. 10 is an explanatory diagram showing an example of a configuration in the control information management table 800 referred to by the system control unit 400 included in the non-contact gas measurement system 500 of FIG.
  • the control information management table 800 is a table storing measurement control information.
  • the measurement control information is information for measuring the measurement target gas 601 such as the frequency of an electromagnetic wave oscillated when the non-contact gas measurement apparatus 100 measures the measurement target gas 601 and information regarding acquisition of a correction wave.
  • the control information management table 800 includes items of a measurement target gas name 801, a frequency 802, and an information correction control 803 from left to right.
  • the measurement target gas name 801 is information for identifying the measurement target gas 601.
  • a frequency 802 indicates a frequency for measuring the measurement target gas 601.
  • the information correction control 803 is information indicating whether or not the information correction unit 200 needs to be controlled at the time of measurement.
  • control information management table 800 are not limited to those in FIG. 10, and information that controls the non-contact gas measuring device 100 and the information correction unit 200 may be stored.
  • information that controls the non-contact gas measuring device 100 and the information correction unit 200 may be stored.
  • a voltage value or a current value for controlling the non-contact gas measuring device 100 may be used.
  • the information stored in the control information management table 800 may be stored in advance in the memory 430 or may be acquired via a network or the like. In addition, information stored in the control information management table 800 may be edited by a user or the like.
  • 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.
  • the measurement control information can be stored by a data structure appropriately selected from a list or a database, for example.
  • control information management table 800 may be stored in, for example, a memory (not shown) included in the system control unit 400 instead of the memory 430, for example.
  • it may be stored in an external storage device connected via a network.
  • FIG. 11 is an explanatory diagram showing an example of a measurement result table 900 stored in the memory 430 included in the non-contact gas measurement system 500 of FIG.
  • the measurement result table 900 stores the result of the non-contact gas measurement system 500 measuring the measurement target gas 601 and analyzing it using the measurement result.
  • the measurement result table 900 has items of date and time 901, measurement target gas name 902, frequency 903, object presence / absence 904, and value 905 from left to right as shown in FIG.
  • Date 901 indicates the date of measurement or analysis.
  • the measurement target gas name 902 indicates information for identifying the measurement target gas 601.
  • a frequency 903 indicates a frequency used for measurement of the measurement target gas 601.
  • the presence / absence of object 904 indicates whether or not the measurement target gas 601 was measured at the time of measurement.
  • a value 905 indicates a value obtained as a result of measurement or analysis.
  • 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.
  • FIG. 12 is a flowchart showing an example of measurement processing of the measurement target gas 601 by the non-contact gas measurement system 500 of FIG.
  • the user acquires input information by operating the input / output unit 420 (step S201).
  • the input information is, for example, a measurement start instruction when the user presses a button on the input unit 421 as shown in FIG.
  • the system control unit 400 receives input information input by the user.
  • the distance measurement unit 300 in FIG. 4 performs distance measurement, and starts determining whether the measurement target gas 601 is within the measurement range (step S202).
  • the system control unit 400 controls the distance measurement unit 300 to measure the distance between the reception oscillation unit 101 and the object 600.
  • the system control unit 400 compares the distance measured by the distance measurement unit 300 with the first measurement determination distance stored in the memory 430, and determines whether the measurement target gas 601 is within or outside the measurement range.
  • the measurable distance of the non-contact gas measurement system 500 is about 10 cm.
  • the first measurement determination distance is about 10 cm.
  • the distance between the reception oscillation unit 101 and the object 600 is about 5 cm, it is shorter than the first measurement determination distance of about 10 cm, so it is determined that it is within the measurement range, and if the measured distance is 15 cm, it is 10 cm. It is determined that it is out of the measurement range because it is longer.
  • the determination result is stored in the object presence / absence 904 in the measurement result table 900 of FIG. As shown in FIG. 11, for example, “Yes” is indicated if the determination result is within the measurement range, and “No” is indicated if the determination result is outside the measurement range.
  • measurement control information is acquired from the control information management table 800 (step S203). Specifically, the system control unit 400 acquires control information necessary for measuring the measurement target gas 601 from the control information management table 800 of FIG. 10 stored in the memory 430.
  • the frequency 802 of 0.558 THz, 0.600 THz and information from the row of the transdermal moisture transpiration amount of the measurement target gas name 801 Information of “present” of the correction control 803 is acquired.
  • control information management table 800 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.
  • the system control unit 400 determines whether to control the information correction unit 200 based on the information acquired in the process of step S203 (step S204). For example, in FIG. 10, if the information correction control 803 is “Yes” (YES), the process proceeds to step S205. If the information correction control 803 is “No” (NO), the process proceeds to step S206.
  • the presence / absence of the 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. On the other hand, in the case of the information correction unit 200 shown in FIG. 8, “Yes” is set when a correction wave is required, and “No” is set when no correction wave is required.
  • the system control unit 400 controls the information correction unit 200 (step S205).
  • the processing in step S205 depends on the configuration of the information correction unit 200.
  • the system control unit 400 controls the motor 202 of the information correction unit 200 to move the mirror 201.
  • the mirror 201 is rotated and moved to a position where the exit 201 is shielded.
  • the system control unit 400 determines whether or not to control the frequency of the electromagnetic wave irradiated by the non-contact gas measuring device 100 based on the control information acquired in the process of step S203 (step S206).
  • control information management table 800 of FIG. 10 Taking the control information management table 800 of FIG. 10 as an example, if the frequency 802 and the information set in the non-contact gas measuring device 100 are different, it is necessary to control, and the process proceeds to step S207.
  • step S208 If the frequency 802 and the information set in the non-contact gas measuring device 100 are the same, no control is required, and the process proceeds to step S208. Specifically, when 0.558 THz is acquired from the frequency 802, the non-contact gas measuring device 100 is left as it is if the non-contact gas measuring device 100 can oscillate 0.558 THz. Is controlled to oscillate 0.558 THz. If the frequency of the non-contact gas measuring device 100 is fixed, this process is not necessary.
  • the non-contact gas measuring device 100 is controlled to set the electromagnetic wave to a specific frequency (step S207).
  • the frequency of the electromagnetic wave is changed by changing the voltage or current of the transmitter / receiver 102.
  • step S208 measurement of the measurement target gas 601 is started, and the reception oscillation unit 101 acquires a current or voltage value (step S208).
  • the measured value is stored in the value 905 of the measurement result table 900.
  • step S209 it is determined whether all the frequencies to be measured have been measured. If there is a frequency to be measured, the process returns to step S206. When measurement of all frequencies is completed, the measurement ends.
  • the measurement is completed at two frequencies of frequency 802 of 0.558 THz and 0.600 THz. It is judged whether or not the measurement is completed.
  • the analysis unit 410 performs analysis using the value 905 of the measurement result table 900 (step S210).
  • the system control unit 400 that has received the measurement instructs the analysis unit 410 to analyze the measured data, and the analysis unit 410 refers to the measurement result table 900 on the memory 430 to perform the analysis. Do.
  • the first is an electromagnetic wave obtained by irradiating the object 600 with a frequency sensitive to water vapor, for example, a frequency of about 0.558 THz. Since the electromagnetic wave reflected from the skin returns, intensity including information on water vapor in the air, water vapor evaporated from the skin, absorption by the skin, and diffusion of internally reflected light is detected.
  • the second is an electromagnetic wave obtained by irradiating the information correction unit 200 with a frequency with high sensitivity due to water vapor, for example, a frequency of about 0.558 THz. Since only the electromagnetic wave reflected by the mirror returns, the intensity including information on water vapor in the air is detected.
  • 3rd is the electromagnetic wave which irradiated the target object 600 with the frequency with low sensitivity to water vapor
  • 4th is the electromagnetic wave which irradiated the information correction
  • the first and second detection results include attenuation due to water vapor in the same air. For this reason, the first and second differences are attenuation by absorption by the skin and diffusion of internally reflected light, and attenuation by water vapor evaporated from the skin.
  • the difference between the third and fourth is attenuation due to absorption by the skin and diffusion of internally reflected light. Therefore, by subtracting the third and fourth differences from the first and second differences, it is possible to detect the attenuation due to the water vapor evaporated from the skin.
  • the system control unit 400 stores the analysis result in the process of step S210 in the memory 430 (step S211).
  • the analysis result may be stored in the measurement result table 900 stored in the memory 430 or may be stored in another area of the memory 430.
  • the process of step S211 may be omitted and the process may proceed to step S212.
  • the system control unit 400 displays the analysis result on the output unit 422. For example, as shown in FIG. 5, the output unit 422 displays so that the user can recognize the analysis result (step S212).
  • the system control unit 400 detects these problems and outputs an alert to the output unit 422.
  • the output unit 422 is a liquid crystal display
  • the contents of the alert are displayed.
  • the output unit 422 is a speaker or the like
  • the alert is transmitted by sound such as voice or buzzer.
  • the output unit 422 is an LED, an alert is notified by light or the like.
  • the reception oscillating unit 101 that radiates and receives electromagnetic waves with a simple configuration, and the size of the non-contact gas measuring device 100 can be reduced.
  • the reception oscillation unit 101 can be measured away from the object 600, that is, without contact with the skin surface. it can.
  • measurement can be performed without bringing the non-contact gas measurement device 100 into close contact with the user's skin, etc., and high-precision measurement can be performed without limiting the measurement location.
  • the burden on the affected area of the user can be reduced.
  • the measurement accuracy of the non-contact gas measurement system 500 can be improved by measuring the measurement target gas using the correction wave generated by the information correction unit 200.
  • FIG. 13 is an explanatory diagram illustrating an example of the configuration of the reception oscillation units 101 and 101a and the information correction unit 200 according to the second embodiment.
  • the measurement wave and the correction wave are respectively acquired by one reception oscillation unit 101.
  • the reception oscillation which is the first reception oscillation unit.
  • a reception oscillation unit 101a which is a second reception oscillation unit is newly provided.
  • the reception oscillation unit 101 is used when measuring the measurement target gas 601 and the reception oscillation unit 101a is used when measuring the correction wave. Since the configuration of the other non-contact gas measurement system 500 is the same as that of FIG. 4 of the first embodiment, description thereof is omitted.
  • the information correction unit 200 includes, for example, a mirror and is provided so as to face the emission surface of the electromagnetic wave in the reception oscillation unit 101a.
  • the information correction unit 200 acquires a correction wave for the reception oscillation unit 101a to remove the influence of a gas other than the measurement target gas 601.
  • the reception oscillation unit 101a irradiates the information correction unit 200 with an electromagnetic wave, and acquires the reflected wave as a correction wave.
  • the reception oscillation unit 101 irradiates the object 600 to be measured with the electromagnetic wave, receives the reflected wave irradiated by the object 600, and acquires a current or voltage value corresponding to the intensity of the received reflected wave.
  • the electromagnetic wave emitted from the reception oscillation unit 101 passes through the measurement target gas 601, is reflected by the target object 600, and returns to measure the measurement wave.
  • the correction wave can be obtained more accurately by providing the reception oscillation unit 101a.
  • the measurement target gas 601 can be measured with higher accuracy, and the reliability of the non-contact gas measurement system 500 can be improved.
  • FIG. 14 is an explanatory diagram showing an example of the configuration of the mobile terminal 560 according to the third embodiment.
  • the mobile terminal 560 includes a non-contact gas measurement system 500, an imaging unit 440, and a communication unit 450.
  • the non-contact gas measurement system 500 has the same configuration as the non-contact gas measurement system 500 of FIG. 4 of the first embodiment.
  • the imaging unit 440 is a camera that acquires an image.
  • the imaging unit 440 is used for a technique for matching measurement positions, which will be described later, and a measurement specifying technique.
  • the communication unit 450 is wirelessly connected to a communication line such as an Internet line or a telephone communication line, and performs communication with the outside.
  • FIG. 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 the non-contact gas measurement device 100, the distance measurement unit 300, the imaging unit 440, and the like to the server 460, for example.
  • the imaging unit 440 is, for example, an R (Red) G (Green) B (Blue) camera having sensitivity to visible light wavelengths, an infrared light camera having sensitivity to infrared light, or an RGB camera having sensitivity to infrared to visible light wavelengths. and so on. Alternatively, it may be an RGB camera having sensitivity to the wavelength of ultraviolet light from visible light to ultraviolet light, or from infrared to visible light.
  • the input / output unit 420 included in the non-contact gas measurement system 500 may use an input / output unit such as a touch panel included in the mobile terminal 560.
  • the non-contact gas measurement system 500 is provided in the mobile terminal 560 such as a smartphone.
  • the imaging unit 440 and the communication unit 450 that are functions of the mobile terminal 560 are newly added to the non-contact gas measurement system 500.
  • a configuration may be added.
  • FIG. 15 is an explanatory diagram showing an example of an overview of the mobile terminal 560 of FIG.
  • FIG. 15A shows the front surface of the mobile terminal 560
  • FIG. 15B shows the back surface of the mobile terminal 560.
  • the surface on which the input / output unit 420 is provided is the front surface of the mobile terminal 560, and the surface facing it is the back surface.
  • the imaging unit 440 can capture an image from either the front side of the mobile terminal 560 shown in FIG. 15A or the back side of the mobile terminal 560 shown in FIG. It has a configuration.
  • the reception oscillating unit 101 also emits and receives electromagnetic waves from the front side of the mobile terminal 560 shown in FIG. 15A and the back side shown in FIG. It is the structure which can be performed.
  • FIG. 16 is an explanatory diagram illustrating an example of display by the input / output unit 420 included in the mobile terminal 560 of FIG.
  • the input / output unit 420 is composed of, for example, a touch panel display.
  • the input / output unit 420 as shown in FIG. 16A, for example, a menu screen on which the user selects a measurement target, an image captured by the imaging unit 440 as shown in FIG. Display the analysis results.
  • the measurement target gas name is displayed so that the user can select it.
  • the control information management table 800 of FIG. 10 of the first embodiment for example, the measurement target gas 601 selected by the user can be easily given to the input information in the process of step S201 of FIG. Can do.
  • FIG. 16 (b) a graph displaying transdermal moisture transpiration amount in time series, a measurement position marker indicating the previous measurement position acquired by the imaging unit 440, etc. You may make it display on 420.
  • FIG. 16 (b) a graph displaying transdermal moisture transpiration amount in time series, a measurement position marker indicating the previous measurement position acquired by the imaging unit 440, etc. You may make it display on 420.
  • FIG. 17 is a flowchart showing an example of the gas measurement operation by the mobile terminal 560 of FIG.
  • step S301 input information is acquired (step S301).
  • the processing in step S301 is the same as the processing in step S201 in FIG. 12 of the first embodiment.
  • the imaging unit 440 images the measurement site of the user, and the system control unit 400 analyzes the captured image (step S302).
  • the measurement site is specified from the image results captured by the imaging unit 440 last time or so far, and the result is displayed on the output unit 422 to notify the user.
  • a measurement position marker may be displayed on the input / output unit 420, or information on the difference between the measurement position marker and the current position captured by the imaging unit 440 using a speaker or the like is used as sound, for example, a change in pitch, volume It is also possible to notify by a change in sound or voice.
  • a measurement specifying technique for specifying whether the measurement by the reception oscillating unit 101 is measured by the front side or the back side of the mobile terminal 560 will be described.
  • the object 600 is photographed on the imaging unit 440 in FIG. 15A, that is, the front side of the portable terminal 560, or the object 600 is captured on the imaging unit 440 in FIG. It is determined whether the image is captured on the side, and the reception oscillation unit 101 performs measurement on the imaged surface side.
  • the reception oscillation unit 101 on the back side of FIG. 15B is used, and when measuring the face or the like, the reception oscillation unit 101 on the front side of FIG. 15A is used. To do. Accordingly, the user can perform measurement while looking at the display that is the input / output unit 420.
  • step S303 when the analysis of the image is completed, the measurement target gas 601 is measured (step S303).
  • the processing in step S303 is the same as the processing in steps S202 to S209 in FIG.
  • the measurement result is transmitted (step S304).
  • the system control unit 400 transfers the measurement result and the like to the server 460 externally connected by the communication unit 450. Thereafter, the server 460 analyzes the transferred measurement result (step S305).
  • the measurement result acquired in the process of step S304 and the image analysis result in the process of step S302 are transmitted from the communication unit 450 to the server 460.
  • Server 460 performs all or part of the complex analysis.
  • the specific process is the same as the process of step S210 in FIG. Thereby, the processing load of the non-contact gas measurement system 500 can be reduced.
  • the communication unit 450 acquires the result analyzed by the server 460 (step S306).
  • the system control unit 400 displays the result acquired from the server 460 on the input / output unit 420 (step S307). At this time, the system control unit 400 stores the result acquired from the server 460 in the memory 430.
  • the non-contact gas measurement system 500 in the portable terminal 560, the convenience of the user can be further improved. Further, since the analysis of the measurement target gas 601 is performed by the external server 460, the measurement target gas 601 can be analyzed in a shorter time.
  • the configuration of the non-contact gas measurement system 500 can be simplified, contributing to downsizing and cost reduction. be able to.
  • FIG. 18 is an explanatory diagram showing an example of the configuration of the non-contact gas measuring apparatus 100 according to the fourth embodiment.
  • the information correction unit 200 is configured by the mirror 201 and the motor 202.
  • the visible light source 104 serves as the mirror 201 and the motor 202 so that a driving unit such as a motor is unnecessary.
  • the non-contact gas measuring apparatus 100 includes a reception oscillation unit 101, a control unit 110, and an information correction unit 200 as shown in FIG. Since the reception oscillation unit 101 is the same as that of the first embodiment shown in FIG.
  • the information correction unit 200 includes a visible light source 104, a lens 105, an ITO (Indium Tin Oxide) 106, and an optical element 107.
  • the visible light source 104 that is an electromagnetic wave irradiation unit emits an electromagnetic wave of visible light, that is, visible light based on the control of the control unit 110.
  • the lens 105 irradiates the optical element 107 with the light emitted from the visible light source 104 as parallel light.
  • the ITO 106 has an optical characteristic that reflects the electromagnetic wave emitted from the reception oscillation unit 101 and transmits the light emitted from the visible light source 104.
  • the optical element 107 changes the transmittance by the visible light source 104.
  • a semiconductor such as Si or GaAs or a substance exhibiting photoinduced metal-insulator transition, such as vanadium oxide, is used instead of the semiconductor.
  • the optical element 107 when the light emitted from the visible light source 104 is irradiated onto the optical element 107, carriers due to the photoelectric effect of the semiconductor are generated.
  • the carriers in the semiconductor behave like a metal for the electromagnetic waves generated by the transmitter / receiver 102.
  • the optical element 107 can be switched to function as a reflection plate or a transmission plate depending on the presence or absence of light emitted from the visible light source 104.
  • the electromagnetic wave oscillated by the transmitter / receiver 102 is irradiated perpendicularly to the object 600, thereby passing through the measurement target gas 601 and returning the reflected wave to the receiver / transmitter 102.
  • the object 600 is a user's skin or the like.
  • the control unit 110 controls the reception oscillation unit 101 and the visible light source 104.
  • the electromagnetic wave oscillated by the reception oscillation unit 101 uses a frequency that is easily absorbed by gas.
  • a frequency such as about 0.56 THz or about 0.75 THz is suitable.
  • the non-contact gas measurement system 500 When the non-contact gas measurement system 500 is configured using the non-contact gas measurement device 100 shown in FIG. 18, the non-contact gas measurement system 500 has the same configuration as that of FIG. 4 of the first embodiment.
  • the external appearance of the non-contact gas measurement system 500 using the non-contact gas measurement device 100 shown in FIG. 18 is as shown in FIG. 5 of the above embodiment.
  • the optical element 107 is provided in the vicinity of the emission port 504 provided in the case 501 shown in FIG.
  • Switching of the optical characteristics of the optical element 107 by the visible light source 104 is performed based on a mode signal output from the system control unit 400 shown in FIG.
  • examples of the mode signal output by the system control unit 400 include an information correction mode signal and a measurement mode signal.
  • the information correction mode signal is a signal output when acquiring a correction wave
  • the measurement mode signal is a signal output when measuring the measurement target gas 601.
  • the information correction mode signal or the measurement mode signal output from the system control unit 400 is input to the control unit 110, respectively.
  • the control unit 110 controls to turn on the visible light source 104 when the information correction mode signal is input, and controls to turn off the visible light source 104 when the measurement mode signal is input.
  • FIG. 19 is an explanatory diagram illustrating an example of a time waveform of each functional unit in the non-contact gas measuring apparatus 100 of FIG.
  • the mode signal output from the system control unit 400 of FIG. 4 with respect to time the change in light intensity with respect to the time of the visible light source 104, and the change in electromagnetic wave intensity generated by the reception oscillation unit 101 with respect to time. 2 shows a change in transmittance with respect to time of the optical element 107 and a change in response of a received signal received by the reception oscillating unit 101.
  • the visible light source 104 emits visible light.
  • the optical element 107 functions as a reflecting plate.
  • This correction wave is an electromagnetic wave.
  • the influence of water vapor due to the environment is removed using the correction wave acquired by the information correction unit 200.
  • the visible light source 104 When the measurement mode signal is output from the system control unit 400, the visible light source 104 is turned off. When no visible light is irradiated, the optical element 107 functions as a transmission plate.
  • the reception oscillation unit 101 can acquire the measurement wave of the measurement target gas 601.
  • the transmitter / receiver 102 continuously emits the electromagnetic wave having the electromagnetic wave intensity Iin in both the period in which the optical element 107 does not function as the transmission plate and the period in which the optical element 107 functions as the transmission plate.
  • the reception oscillation unit 101 acquires a correction wave that reduces measurement errors due to the environment. Further, when the optical element 107 is operating as a transmission plate, in the reception oscillation unit 101, the transmitter / receiver 102 detects a reflected wave obtained by measuring the measurement target gas.
  • FIG. 20 is a flowchart illustrating an example of measurement processing of the measurement target gas 601 by the non-contact gas measurement system 500 configured using the non-contact gas measurement device 100 of FIG. In the flowchart of FIG. 20, unless otherwise specified, the system control unit 400 of FIG.
  • steps S401 to S404 in FIG. 20 is the same as the processing in steps S201 to S204 in FIG.
  • step S404 when it is determined that the information correction unit 200 is controlled, the system control unit 400 controls the information correction unit 200 (step S405).
  • step S405 the information correction unit 200 outputs an information correction mode signal to the control unit 110.
  • the control unit 110 performs control so that the visible light source 104 is turned on. Thereby, the optical element 107 functions as a reflector.
  • the system control unit 400 controls the reception oscillation unit 101 to oscillate and receive an electromagnetic wave, thereby starting measurement of the measurement target gas 601 and the reception oscillation unit 101 obtains a current or voltage value. (Step S406). As described above, a correction wave is acquired by the optical element 107 functioning as a reflector.
  • step S407 the system control unit 400 determines whether or not to perform frequency control for information correction.
  • the frequency control determination technique in the process of step S407 will be described by taking as an example the case where the transdermal moisture transpiration amount is measured as the measurement target gas 601.
  • the system control unit 400 determines whether or not to control the frequency of the electromagnetic wave emitted by the non-contact gas measurement device 100 based on the measurement control information acquired from the control information management table 800 of FIG. 10 in the process of step S403. judge.
  • control information management table 800 in FIG. 10 Taking the control information management table 800 in FIG. 10 as an example, if the frequency 802 and the frequency set in the non-contact gas measuring device 100 are different, it is necessary to control the frequency of the electromagnetic wave. It determines with YES.
  • step S403 determines with NO and progresses to the process of step S408.
  • step S407 When it is determined in step S407 that it is not necessary to control the frequency of the electromagnetic wave, or when it is determined in step S404 that the information correction unit 200 is not to be controlled, the system control unit 400 controls the control unit 110.
  • a measurement mode signal is output, and the visible light source 104 of the information correction unit 200 is controlled to be turned off. Since no visible light is irradiated, carriers due to the photoelectric effect of the semiconductor are not generated in the optical element 107, and the optical element 107 functions as a transmission plate.
  • the system control unit 400 determines whether or not to control the frequency of the electromagnetic wave irradiated by the non-contact gas measuring device 100 based on the control information acquired in the process of step S403 (step S408).
  • control information management table 800 of FIG. 10 if the frequency 802 and the frequency set in the non-contact gas measuring device 100 are different, it is necessary to control, so the process proceeds to step S409. .
  • step S410 If the frequency 802 in the control information management table 800 is the same as the frequency set in the non-contact gas measuring device 100, the control is unnecessary, and the process proceeds to step S410.
  • the non-contact gas measuring device 100 when 0.558 THz is acquired from the frequency 802, the non-contact gas measuring device 100 is left as it is if it can oscillate 0.558 THz, and if different, the non-contact gas measurement is performed in the process of step S409.
  • the device 100 is controlled so as to be able to oscillate 0.558 THz. If the frequency of the non-contact gas measuring device 100 is fixed, this process is not necessary.
  • the system control unit 400 controls the non-contact gas measuring device 100 to set the electromagnetic wave to a specific frequency (step S409).
  • the frequency of the electromagnetic wave is changed by changing the voltage or current of the transmitter / receiver 102.
  • step S410 measurement of the measurement target gas 601 is started, and the reception oscillation unit 101 acquires a current or voltage value (step S410).
  • the measured value is stored in the value 905 of the measurement result table 900 of FIG.
  • the system control unit 400 refers to the control information acquired in step S403, and determines whether or not all the frequencies to be measured have been measured (step S411). If there is a frequency to be measured, the process returns to step S408).
  • the measurement is finished. Specifically, taking FIG. 10 as an example, if the transcutaneous moisture transpiration is to be measured as the measurement target gas 601, whether or not the measurement has been completed at two frequencies of frequency 802 of 0.558 THz and 0.600 THz. Repeat until the measurement is completed.
  • the analysis unit 410 When the measurement is completed, the analysis unit 410 performs analysis using the value 905 in the measurement result table 900 of FIG. 11 (step 412).
  • the processing in steps S412 to S414 in FIG. 20 is the same as the processing in steps S210 to S212 in FIG.
  • the measurement result by the non-contact gas measuring device 100 shown in FIG. 18 usually includes noise derived from temperature and vibration. Therefore, in order to obtain a more accurate measurement result, a measurement technique for removing noise from the signal component is required.
  • lock-in measurement is used in which a signal component spectrum and a noise spectrum are separated by modulating a signal.
  • a technique that uses an optical chopper for modulation of this signal uses an optical chopper for modulation of this signal.
  • the technology using this chopper performs modulation by rotating the optical chopper and turning on / off the electromagnetic wave emitted from the transmitter / receiver 102 at the rotational frequency. For this reason, a motor for rotating the optical chopper is required.
  • FIG. 21 is an explanatory diagram showing changes in electromagnetic wave intensity and transmittance when the visible light source is modulated by the non-contact gas measuring device 100 of FIG.
  • FIG. 21 shows the timing of turning on / off the visible light source 104, the electromagnetic wave emitted from the reception oscillating unit 101, and the change in the transmittance of the optical element 107 from above to below.
  • the visible light source 104 emits visible light having a visible light intensity Ivin by repeatedly turning it off and on. The lighting and extinguishing are repeated over time at, for example, about 1 kHz.
  • the control unit 110 controls turning off and turning on the visible light source 104.
  • the reception oscillating unit 101 continuously emits the electromagnetic wave having the electromagnetic wave intensity Iin.
  • the control of the reception oscillation unit 101 is performed by the control unit 110.
  • the transmittance of the optical element 107 changes as the visible light source 104 is turned on and off. As shown in the drawing, when the visible light source 104 is turned on, the optical element 107 functions as a reflection state 2201, that is, a reflection plate. When the visible light source 104 is turned off, the optical element 107 functions as a transmission state 2202, that is, a transmission plate.
  • the control unit 110 changes the visible light intensity Ivin of the visible light source 104 over time
  • the optical element 107 can be controlled over time as shown in FIG.
  • the electromagnetic wave having the electromagnetic wave intensity Iin emitted from the reception oscillating unit 101 is modulated by the optical element 107 at a frequency of about 1 kHz, the spectrum of the signal component and the spectrum of the noise can be well separated. As a result, a more accurate measurement result can be obtained.
  • FIG. 22 is a flowchart showing another example of the measurement process of FIG.
  • the optical characteristics of the optical element 107 change only in the information correction mode signal from the system control unit 400.
  • the optical characteristics are changed in the two modes of the information correction mode signal and the measurement mode signal.
  • FIG. 20 and FIG. 22 are all the same except for the processing in step S508.
  • step S508 in FIG. 22 is performed by controlling the reception oscillation unit 101, the visible light source 104, and the optical element 107 in terms of time as described with reference to FIG. Signal modulation of the electromagnetic wave of the oscillation unit 101 is performed.
  • biometric authentication such as detecting the presence or absence of a biometric.
  • FIG. 23 is an explanatory diagram showing an example of film thickness measurement by the non-contact gas measurement device 100 according to the fifth embodiment.
  • non-contact gas measurement device 100 shown in FIG. 23 is the same as the non-contact gas measurement device 100 shown in FIG. 18 of the fourth embodiment, and thus the description of the non-contact gas measurement device 100 is omitted.
  • FIG. 23 shows a case where the film thickness of the object 600 having a layer structure is measured.
  • the electromagnetic wave 603 emitted from the transmitter / receiver 102 by the layer structure of the object 600 is reflected by the electromagnetic wave 603 reflected on the surface of the film.
  • 2 shows an example in which two electromagnetic waves generated by the electromagnetic wave 604 reflected on the back surface are generated.
  • the peak valley method using the light interference effect is used.
  • the electromagnetic wave 603 reflected from the surface and the electromagnetic wave 604 reflected from the back surface of the object 600 interfere with each other, and the intensity of the interference increases when the phases of the two electromagnetic waves coincide with each other.
  • the film thickness measurement using the peak valley method or the like is executed by, for example, the analysis unit 410 in FIG.
  • FIG. 24 is an explanatory diagram for explaining the principle of film thickness measurement on the object 600 in FIG.
  • FIG. 24 is a graph in which the horizontal axis represents frequency and the vertical axis represents the intensity of interference signals.
  • FIG. 24 (a) shows the principle of film thickness measurement by the peak valley method
  • FIG. 24 (b) shows the principle of film thickness measurement by the curve fit method.
  • the film thickness is calculated from the two frequencies at which the interference signal intensity is maximum using the following equation (1).
  • d is the film thickness of the object 600
  • n is the refractive index of the object 600
  • c is the speed of light
  • ⁇ f is the difference between two frequencies (f2 ⁇ f1) at which the interference signal intensity is maximum.
  • the difference between the two frequencies at which the interference signal intensity becomes maximum is 0.25 THz to 0. .75 THz or so.
  • the refractive index n of the object 600 is not necessarily known.
  • the refractive index of the object 600 may be regarded as a fixed value that does not change, and nd may be considered as d ′.
  • the measurement values may be managed for each object 600.
  • the skin thickness it is possible to determine the rough skin of the user.
  • the epidermis layer is thin due to the influence of the rough skin.
  • convenience for the user can be improved.
  • the film thickness is not measured by the difference between the two frequencies at which the interference signal intensity is maximum, but the frequencies f1 to f4 are measured while changing the frequency. .
  • the film thickness is calculated by curve fitting so that the difference from the estimated value of the interference signal intensity with respect to the frequency obtained from the film structure modeling the change in the intensity of the interference signal with respect to the measured frequency is reduced. is there.
  • the film thickness measurement in the non-contact gas measuring apparatus 100 according to the fifth embodiment is effective not only for measuring the thickness of the skin but also for measuring the thickness of the coating film of a car, for example.
  • the present invention is not limited to the above-described embodiment, and includes various modifications.
  • the functions of the imaging unit 440 and the distance measurement unit 300 in FIG. A system can be realized.
  • Non-contact gas measuring device 101 Reception oscillation part 101a Reception oscillation part 102 Receiver / transmitter 103 Lens 104 Visible light source 105 Lens 106 ITO 107 optical element 110 control unit 200 information correction unit 201 mirror 202 motor 300 distance measurement unit 400 system control unit 401 system bus 410 analysis unit 420 input / output unit 421 input unit 422 output unit 430 memory 440 imaging unit 450 communication unit 460 server 500 Contact gas measurement system 560 Portable terminal 600 Object 601 Measurement target gas

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Abstract

Dans un dispositif de mesure de gaz sans contact (100), une unité de réception/oscillation (101) émet et détecte des ondes électromagnétiques. Une source de lumière visible (104) émet des ondes électromagnétiques présentant une fréquence différente de celle des ondes électromagnétiques émises par l'unité de réception/oscillation (101). Un élément optique (107) présente une transmittance qui change en fonction des ondes électromagnétiques émises par la source de lumière visible (104), et transmet ou réfléchit les ondes électromagnétiques émises par l'unité de réception/oscillation (101). Lorsqu'un objet cible doit être mesuré, une unité de commande (110) met en œuvre une commande visant à modifier la transmittance de telle sorte que les ondes électromagnétiques de la source de lumière visible (104) sont arrêtées et que l'élément optique (107) fonctionne comme une plaque de transmission, pour que les ondes électromagnétiques transmises à travers l'élément optique (107) soient rayonnées au niveau de l'objet cible. L'unité de réception/oscillation (101) délivre la valeur de la tension ou du courant, qui varie en fonction de l'intensité des ondes électromagnétiques réfléchies par l'objet cible (600), en tant que valeur mesurée.
PCT/JP2019/017312 2018-04-27 2019-04-23 Dispositif de mesure de gaz sans contact, système de mesure de gaz sans contact et procédé de mesure de gaz sans contact WO2019208596A1 (fr)

Applications Claiming Priority (2)

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JP2018-087605 2018-04-27
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002263072A (ja) * 2001-03-08 2002-09-17 Dhc Co 水分蒸散量測定装置
JP2010139402A (ja) * 2008-12-12 2010-06-24 Aisin Seiki Co Ltd 非接触膜厚測定装置及び方法
JP2010169658A (ja) * 2008-12-25 2010-08-05 Canon Inc 分析装置
JP2010172543A (ja) * 2009-01-30 2010-08-12 Alcare Co Ltd 経皮水分蒸散量を推定する方法及び皮膚バリア機能評価装置
JP2011169645A (ja) * 2010-02-16 2011-09-01 Hamamatsu Photonics Kk ガス濃度算出装置及びガス濃度計測モジュール
US9518866B2 (en) * 2014-08-22 2016-12-13 Spectrasensors, Inc. Spectrometer with variable beam power and shape
JP2017020837A (ja) * 2015-07-08 2017-01-26 パイオニア株式会社 異物検出装置及び方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002263072A (ja) * 2001-03-08 2002-09-17 Dhc Co 水分蒸散量測定装置
JP2010139402A (ja) * 2008-12-12 2010-06-24 Aisin Seiki Co Ltd 非接触膜厚測定装置及び方法
JP2010169658A (ja) * 2008-12-25 2010-08-05 Canon Inc 分析装置
JP2010172543A (ja) * 2009-01-30 2010-08-12 Alcare Co Ltd 経皮水分蒸散量を推定する方法及び皮膚バリア機能評価装置
JP2011169645A (ja) * 2010-02-16 2011-09-01 Hamamatsu Photonics Kk ガス濃度算出装置及びガス濃度計測モジュール
US9518866B2 (en) * 2014-08-22 2016-12-13 Spectrasensors, Inc. Spectrometer with variable beam power and shape
JP2017020837A (ja) * 2015-07-08 2017-01-26 パイオニア株式会社 異物検出装置及び方法

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