WO2019117032A1 - Dispositif de mesure de gaz sans contact, système de mesure de gaz sans contact, terminal portatif et procédé de mesure de gaz sans contact - Google Patents

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

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WO2019117032A1
WO2019117032A1 PCT/JP2018/045075 JP2018045075W WO2019117032A1 WO 2019117032 A1 WO2019117032 A1 WO 2019117032A1 JP 2018045075 W JP2018045075 W JP 2018045075W WO 2019117032 A1 WO2019117032 A1 WO 2019117032A1
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Prior art keywords
measurement
gas
unit
electromagnetic wave
measured
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PCT/JP2018/045075
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English (en)
Japanese (ja)
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美沙子 河野
幸修 田中
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
    • G01N21/3554—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for determining moisture content

Definitions

  • the present invention relates to a non-contact gas measurement device, a non-contact gas measurement system, a portable terminal, and a non-contact gas measurement method, and in particular to a technique effective for non-contact measurement of gas on the skin surface.
  • Patent Document 1 Japanese Patent Application Laid-Open Nos. 2002-263072
  • Patent Document 2 Japanese Patent Application Laid-Open No. 2010-172543
  • Patent Document 3 Japanese Patent Application Laid-Open No. 2010-169658
  • Patent Document 1 describes, as a problem, "a device for measuring the amount of water evaporation which is capable of measurement with necessary and sufficient accuracy and which is compact, lightweight, inexpensive and easy to handle", and the solution thereof
  • the circuit board is placed inside the frame to be in contact with the skin surface, and only one capacitive polymer thin film humidity sensor is placed on the circuit board as a humidity detection element.
  • the drive circuit of the humidity detection element is also the circuit board
  • the amount of water evaporation is calculated from the circuit output taken out through the handle shaft, and since only one humidity detection element is used, the number of parts is reduced as compared with the case where two are used and The cost of coordination and maintenance will be low. ”
  • Patent Document 2 describes, as a problem, "a device for estimating the amount of transcutaneous water evaporation simply and accurately and further evaluating the barrier function of the skin based on this," and means for solving the problem.
  • the main body an application electrode which can apply a plurality of alternating voltages installed in the main body, and any one of susceptance (B), admittance (Y) or conductance (G) which is installed in the main body” Amount of transdermal water loss based on any of the detected susceptance (B), admittance (Y), or conductance (G) contained in the detection electrode 13, the display unit installed in the body unit, and the body unit And a calculator configured to calculate a characteristic value (P) that can be an estimated value of, to estimate the amount of transepidermal water loss based on the calculated characteristic value (P), and to evaluate the skin barrier function based on this.
  • P characteristic value
  • Patent Document 3 describes, as a problem, “Analyze gas supplied from a gas supply site efficiently.”
  • “capture film 3 for capturing gas for example, porous) (E.g., organic polymers, etc.), such that the gas captured by the capture film (e.g., skin gas generated from the human body) interacts with the terahertz wave or infrared light generated from the generator.
  • It has a capturing part (a member composed of a capturing membrane and a collecting container) in which the membrane can be placed, and the capturing part can be in contact with a site (for example, a human body such as an arm or a hand) which supplies the gas.
  • the structure is provided so as to maintain the capture membrane and the site 1 in a non-contact state.
  • JP 2002-263072 A JP, 2010-172543, A JP, 2010-169658, A
  • the skin of the human body not only regulates the environment and temperature in the living body by skin respiration and perspiration, but also plays a role of protecting the internal tissues of the living body from external stimuli such as foreign matter, bacteria, and microorganisms.
  • the amount of water inside the skin and the amount of water transpired from the skin It is important to obtain information on the so-called transdermal water loss.
  • the amount of transcutaneous water loss is of great interest as an index for evaluating the skin barrier function that protects the living body from external stimuli and protects the water from transpiration out of the body.
  • Patent Document 1 In the measurement of the amount of percutaneous water evaporation, there is known a technique (for example, Patent Document 1) of measuring the amount of water loss transpiration from the skin surface using, for example, a humidity sensor or the like. This technique requires a mechanism for stabilizing a humidity sensor that measures the amount of water loss from the skin surface. As a result, there is a problem that the measuring equipment becomes expensive and large. In addition, since it is a contact type in which a part of the measurement device is brought into contact with an object, ie, the skin, measurement may affect or scratch the skin surface of the patient at the time of measurement. Considering the influence on the patient's skin etc., the measurement point is limited.
  • Patent Document 2 there is a technique (for example, Patent Document 2) or the like for evaluating the barrier function of the skin at a small size and at low cost by measuring the electrical property of the skin. Similar to Patent Document 1 described above, in order to measure the electrical property of the object, it is necessary to bring a part of the measuring device into contact with the skin which is the measuring part.
  • An object of the present invention is to provide a technique capable of measuring a gas from an object with a simple configuration without affecting the skin or the like of the user.
  • a typical noncontact gas measurement system has a noncontact gas measurement device, an analysis unit, and a system control unit.
  • a non-contact gas measuring device measures the gas to be measured emitted from an object using electromagnetic waves.
  • the analysis unit analyzes the gas to be measured from the measurement value measured by the non-contact gas measurement device.
  • the system control unit controls the operation of the noncontact gas measurement device and the analysis unit.
  • the non-contact gas measurement device includes a reception oscillation unit and a control unit.
  • the reception oscillation unit emits and detects an electromagnetic wave.
  • the control unit controls the reception oscillation unit.
  • the receiving and oscillating unit irradiates the electromagnetic wave to the object based on the command of the control unit, and outputs the value of the voltage or current, which changes according to the intensity of the electromagnetic wave reflected from the object, to the analysis unit as a measured value.
  • the reception oscillation unit is formed of an electronic device that oscillates an electromagnetic wave in the negative resistance region.
  • the noncontact gas measuring device and the noncontact gas measuring system can be miniaturized.
  • FIG. 5 is an explanatory drawing showing an example of the configuration of the non-contact gas measurement device according to the first embodiment. It is explanatory drawing which shows an example of the characteristic in the receiving oscillator which the non-contact gas measuring device of FIG. 1 has. It is a flowchart which shows an example in operation
  • FIG. 5 is a schematic perspective view showing an example of the non-contact gas measurement system of FIG. 4; It is explanatory drawing which shows an example at the time of using the non-contact gas measurement system of FIG.
  • FIG. 16 is an explanatory drawing showing an example of the configuration of a reception oscillation unit and an information correction unit according to Embodiment 2;
  • FIG. 16 is an explanatory drawing showing an example of the configuration of a portable terminal according to Embodiment 3; It is explanatory drawing which shows an example of the outline 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 operation
  • FIG. 1 is an explanatory view showing an example of the configuration of the non-contact gas measurement apparatus 100 according to the first embodiment.
  • the non-contact gas measurement apparatus 100 measures the measurement target gas 601 emitted from the object 600 using an electromagnetic wave.
  • This non-contact gas measuring apparatus 100 has a receiving / oscillating unit 101 and a control unit 110 as shown in FIG.
  • the reception oscillation unit 101 has a configuration in which oscillation and reception of an electromagnetic wave are simplified, and emits and detects the electromagnetic wave.
  • the reception / oscillation unit 101 has a transmitter / receiver 102 and a lens 103.
  • the transmitter / receiver 102 oscillates and receives an electromagnetic wave.
  • the lens 103 collimates the electromagnetic wave oscillated by the transmitter / receiver 102 to the object 600 and condenses the reflected wave from the object 600.
  • the electromagnetic wave oscillated by the transmitter / receiver 102 is irradiated perpendicularly to the object 600 so that it passes through the gas 601 to be measured and the reflected wave returns to the transmitter / receiver 102.
  • the object 600 is, for example, the skin of the user.
  • Control unit 110 controls reception oscillation unit 101.
  • the electromagnetic wave oscillated by the reception oscillation unit 101 uses a frequency that is easily absorbed by the gas.
  • a frequency such as about 0.56 THz or about 0.75 THz is preferable.
  • the transmitter / receiver 102 is an electronic device that oscillates an electromagnetic wave in, for example, a negative resistance region, and is, for example, a resonant tunneling diode.
  • FIG. 1 shows the resonant tunneling diode for the sake of convenience, the oscillator is not limited to this.
  • a device that oscillates an electromagnetic wave such as a laser may be used.
  • an oscillator that oscillates a frequency of about 0.56 THz or about 0.75 THz there is, for example, a quantum cascade laser or a resonant tunneling diode.
  • FIG. 2 is an explanatory view showing an example of the characteristics of the transmitter / receiver 102 which the non-contact gas measurement apparatus 100 of FIG. 1 has.
  • 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, and the electromagnetic wave oscillated from the transmitter / receiver 102 is regarded as the reflected wave as the reflected wave.
  • the electromagnetic wave oscillated from the transmitter / receiver 102 is regarded as the reflected wave as the reflected wave.
  • an electromagnetic wave is oscillated in the negative resistance region by applying a specific voltage between the terminals of the resonant tunneling diode.
  • Non-Patent Document Masahiro Asada and Safumi Suzuki 2015 Jpn. J. Appl. Phys. 54 070309 describes that when the reflectivity of the reflector is different, the current flowing between the terminals of the oscillator changes.
  • the present inventor notes that this phenomenon can be applied to non-contact gas measurement by making the thing shown as the reflectance of the reflecting object in the above-mentioned non-patent document be the attenuation due to the absorption of electromagnetic waves in the gas to be measured. 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 transmitter / receiver 102. . Since the intensity of the reflected wave changes according to the amount of the gas to be measured 601 in the electromagnetic wave path, it becomes possible to perform gas measurement using the difference in current or voltage applied to the transmitter / receiver 102.
  • the measurement target gas 601 is measured from the correlation between the absorption by the gas and the amount. It is possible to
  • the graph shown in FIG. 2 shows an example, and the data structure is not limited to this, and the configuration showing the relationship between the measured current value and the gas to be measured, for example, information such as table configuration If it is ⁇ Operation example of gas measurement device>
  • FIG. 3 is a flow chart showing an example of the operation of gas measurement by the non-contact gas measurement apparatus 100 of FIG.
  • control unit 110 controls the reception oscillation unit 101 to irradiate an electromagnetic wave of a preset frequency to the target object 600 to be measured (step S101).
  • step S101 since the non-contact gas measurement apparatus 100 need only irradiate an electromagnetic wave toward the object 600, there is no need to bring the non-contact gas measurement apparatus 100 into close contact with the object 600 such as skin. As shown in FIG. 1, the gas measurement is performed with a distance between the non-contact gas measurement device 100 and the object 600.
  • the electromagnetic wave emitted perpendicularly to the object 600 passes through the gas 601 to be measured and is irradiated onto the object 600, and the reflected wave is collected on the lens 103 and returns to the transmitter / receiver 102.
  • the control unit 110 acquires the value of the current or voltage according to the intensity of the reflected wave received by the reception oscillation unit 101 (step S102).
  • gas measurement can be performed without bringing the non-contact gas measurement apparatus 100 into close contact with the object 600 as described above, so that the influence on the skin surface of the patient can be reduced during measurement.
  • the measurement position is not limited, and accurate measurement results can be easily obtained.
  • the intensity of the reflected wave in FIG. 2 can be replaced with the concentration of the gas to be measured 601 by measuring the value quantitatively in advance.
  • the concentration of the gas to be measured 601 can be calculated using the current value or the voltage value measured in the process of step S102.
  • FIG. 4 is an explanatory view showing an example of a configuration of a non-contact gas measurement system 500 using the non-contact gas measurement apparatus 100 of FIG.
  • the non-contact gas measurement system 500 has a non-contact gas measurement apparatus 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 as shown in FIG. .
  • the non-contact gas measurement apparatus 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 mutually connected by a system bus 401.
  • the configuration and operation of the non-contact gas measurement apparatus 100 are the same as those shown in FIG.
  • the information correction unit 200 acquires a correction wave that reduces the measurement error due to the environment.
  • This correction wave is an electromagnetic wave.
  • the amount of water vapor in the air may differ depending on the environment where the user is present, which may affect the measured value. Therefore, 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. In particular, when measuring the gas 601 to be measured, the system control unit 400 controls the non-contact gas measurement apparatus 100 with reference to a control information management table 800 shown in FIG. 10 described later.
  • the analysis unit 410 analyzes the measured value of the detected electromagnetic wave.
  • the input / output unit 420 is an interface with the user, and includes an input unit 421 and an output unit 422 shown in FIG. 5 described later.
  • the input unit 421 is, for example, a button
  • the output unit 422 is, for example, a display unit.
  • the memory 430 is formed of, for example, a non-volatile semiconductor memory exemplified by a flash memory, and stores received data, an analysis result, and the like.
  • the control information management table 800 of FIG. 10, which will be described later, and the measurement result table 900 of 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 housed in a case 501 which is, 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 selection of a gas to be measured from the input unit 421.
  • the input unit 421 is not limited to a button, and may be, for example, a touch panel or a keyboard.
  • the output unit 422 is a liquid crystal display in the example of FIG.
  • the measurement result and the like are displayed on the output unit 422.
  • the output unit 422 is not limited to the liquid crystal display, and may be, for example, a light emitting diode (LED) or a buzzer.
  • 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.
  • an LED for the output unit 422 for example, it is possible to present information such as measurement completion of green light emission and measurement error of red light emission.
  • an emission port 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 of the non-contact gas measurement apparatus 100.
  • the information correction unit 200, the distance measurement unit 300, the system control unit 400, the analysis unit 410, and the memory 430, which constitute 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 skin of the user as time series data including the past history as well as the measurement value at a certain time.
  • non-contact gas measurement system 500 when used by a plurality of users, for example, information such as numbers identifying the respective users can be added to the memory 430 to identify measurement data of a plurality of persons respectively. You may hold it. ⁇ Usage example of non-contact gas measurement system>
  • FIG. 6 is an explanatory view showing an example when using the non-contact gas measurement system 500 of FIG.
  • FIG. 7 is an explanatory view showing an example of the configuration of the reception / oscillation unit 101 and the information correction unit 200 which the non-contact gas measurement system 500 of FIG. 4 has.
  • the information correction unit 200 is for obtaining the correction wave from which the reception oscillation unit 101 removes the influence due to other than the measurement target gas 601.
  • the information correction unit 200 is configured by, for example, a mirror.
  • the information correction unit 200 is not limited to a mirror, and may be a reflector or an optical element that reflects an electromagnetic wave.
  • the information correction unit 200 is provided in the vicinity of the emission port 504 provided in the case 501, and is provided to face the emission surface of the electromagnetic wave in the reception oscillation unit 101. In this case, a part of the electromagnetic wave emitted from the reception oscillation unit 101 is reflected on the surface of the information correction unit 200 and reflected.
  • the reception oscillation unit 101 acquires the reflection wave of the information correction unit 200 as a correction wave.
  • the system control unit 400 in FIG. 4 determines whether the object 600 is sufficiently separated.
  • 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 of FIG.
  • the system control unit 400 determines that the object 600 is sufficiently separated.
  • the first measurement determination distance is stored in, for example, the memory 430.
  • the receiving and oscillating unit 101 After acquiring the correction wave, the receiving and oscillating unit 101 emits an electromagnetic wave.
  • the electromagnetic wave passes through the gas to be measured 601 to hit the object 600, and measures the reflected wave.
  • the distance between the receiving / oscillating unit 101 and the object 600 is within the measurable distance, and the measuring object gas 601 can be measured.
  • the system control unit 400 determines whether or not it is within the measurable distance from the distance result measured by the distance measuring unit 300. When the distance measured by the distance measurement unit 300 is shorter than the second measurement determination distance set in advance, the system control unit 400 determines that the object 600 approaches sufficiently.
  • the second measurement determination distance is stored, for example, in the memory 430.
  • the measurement wave of the measurement target gas 601 also includes a correction wave. This is because the reflected wave that is reflected to the information correction unit 200 is included when the measurement target gas 601 is measured. However, even if the measurement wave of the measurement target gas 601 includes the correction wave, the measurement target gas 601 is measured with high accuracy by correcting using the correction wave acquired before the measurement target gas 601 is measured. be able to.
  • the electromagnetic waves emitted from the reception / oscillation unit 101 are collimated by using the lens 103 as shown in FIG. 1, but may be divergent instead of collimated light. In that case, the lens 103 is unnecessary.
  • FIG. 8 is an explanatory view showing another configuration example of the reception oscillation unit 101 and the information correction unit 200 which the non-contact gas measurement system 500 of FIG. 4 has.
  • FIG. 9 is an explanatory view continued from FIG.
  • the information correction unit 200 shown in FIG. 8 has a mirror 201 and a motor 202.
  • the information correction unit 200 in FIG. 7 is only a mirror, and the mirror is fixed.
  • 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 rotatably mounted with two corner portions above the mirror 201 as rotation axes.
  • the motor 202 rotates the mirror 201 based on, for example, the mode signal output from the system control unit 400 of FIG. 4.
  • mode signals 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 the 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 to move the mirror 201 to a position where the light exit 504 is blocked.
  • the electromagnetic wave emitted from the receiving and oscillating unit 101 is reflected by the mirror 201 and can return to the receiving and oscillating unit 101 to obtain a correction wave.
  • the motor 202 rotates the mirror 201 by about 90 ° as shown in FIG. 9 and moves the mirror 201 to a position where it does not block the exit 504. That is, the mirror 201 is removed from between the reception oscillation unit 101 and the object 600.
  • the electromagnetic wave emitted from the receiving and oscillating unit 101 passes through the gas to be measured 601 and is reflected on the object 600, so that the receiving and oscillating unit 101 can acquire the measurement wave of the gas to be measured 601 .
  • control information management table 800 will be described.
  • FIG. 10 is an explanatory diagram showing an example of the configuration of the control information management table 800 to which the system control unit 400 of the non-contact gas measurement system 500 of FIG. 4 refers.
  • the control information management table 800 is a table storing measurement control information.
  • the measurement control information is information for measuring the gas to be measured 601, such as the frequency of an electromagnetic wave oscillating when the non-contact gas measurement apparatus 100 measures the gas to be measured 601, and information on acquisition of a correction wave.
  • the control information management table 800 has items of a measurement target gas name 801, a frequency 802, and an information correction control 803 from the left to the right as shown in FIG.
  • 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.
  • Information correction control 803 is information indicating whether it is necessary to control the information correction unit 200 at the time of measurement.
  • control information management table 800 are not limited to those shown in FIG. 10, as long as information for controlling the non-contact gas measurement apparatus 100 and the information correction unit 200 may be stored.
  • information for controlling the non-contact gas measurement apparatus 100 and the information correction unit 200 may be stored.
  • a voltage value or a current value for controlling the non-contact gas measurement 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 the like, or may be acquired via a network or the like. Further, the user may edit the information stored in the control information management table 800.
  • control information management table 800 is unnecessary.
  • the measurement control information does not depend on the data structure, and may be any data structure.
  • the measurement control information can be stored by a data structure appropriately selected from a list or a database.
  • the control information management table 800 may be stored not in the memory 430, for example, as described above, but in a memory (not shown) of the system control unit 400, for example. In addition, for example, it may be stored in an external storage device connected via a network. ⁇ Example of configuration of measurement result table>
  • FIG. 11 is an explanatory view showing an example of a measurement result table 900 stored in the memory 430 of the non-contact gas measurement system 500 of FIG. 4.
  • the measurement result table 900 stores the measurement result of the measurement target gas 601 by the non-contact gas measurement system 500 and analysis using the measurement result.
  • the measurement result table 900 has items of date and time 901, measurement target gas name 902, frequency 903, target presence / absence 904, and value 905 from left to right.
  • the date and time 901 indicates the measured or analyzed date and time.
  • the gas name to be measured 902 indicates information for identifying the gas to be measured 601.
  • the frequency 903 indicates the frequency used to measure the gas 601 to be measured.
  • the object presence / absence 904 indicates whether or not the measurement target gas 601 has been measured at the time of measurement.
  • the value 905 indicates the value of the measured or analyzed result.
  • the items of the measurement result table 900 are not limited to those shown in FIG. 11, and other information acquired or generated by the non-contact gas measurement system 500 may be stored. ⁇ Operation example of non-contact gas measurement system>
  • FIG. 12 is a flowchart showing an example of measurement processing of the gas to be measured 601 by the non-contact gas measurement system 500 of FIG. 4.
  • the system control unit 400 of FIG. 4 mainly controls control unless otherwise specified.
  • the user operates the input / output unit 420 to acquire input information (step S201).
  • the input information is, for example, as shown in FIG. 6, an instruction to start measurement by the user pressing the button of the input unit 421.
  • the system control unit 400 receives the input information input by the user.
  • step S202 When the system control unit 400 receives the input information, distance measurement is performed by the distance measurement unit 300 in FIG. 4, and it is determined whether the gas to be measured 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 the measurement range or not.
  • 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 receiving oscillator 101 and the object 600 is about 5 cm, it is determined to be within the measurement range because it is less than about 10 cm of the first measurement determination distance, and 10 cm if the measured distance is 15 cm. It is judged to be out of the measurement range because it is longer than this.
  • 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, if the determination result is within the measurement range, “Yes” is displayed, and if the determination result is outside the measurement range, “None” is indicated.
  • 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.
  • 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 or absence of the information correction control 803 depends on the configuration of the non-contact gas measurement system 500 and the gas 601 to be measured. For example, in the case of the information correction unit 200 shown in FIG. 7, the control of the information correction is not necessary, so that it is always “absent”. On the other hand, in the case of the information correction unit 200 shown in FIG. 8, when the correction wave is necessary, it is “Yes”, and when the correction wave is unnecessary, it is “No”.
  • 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 rotates the mirror 201 by controlling the motor 202 of the information correction unit 200. Then, the mirror 201 moves the light emission port 504 to a position where the light emission port 504 is shielded.
  • the system control unit 400 determines whether to control the frequency of the electromagnetic wave irradiated by the non-contact gas measurement apparatus 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 measurement apparatus 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 measurement apparatus 100 are the same, the control is not necessary, and thus the process proceeds to step S208. Specifically, when 0.558 THz is acquired from the frequency 802, the non-contact gas measurement device 100 is left as it is if it can oscillate 0.558 THz, and if it is different, the non-contact gas measurement device 100 is processed in step S207. Is controlled to oscillate 0.558 THz. In addition, when the frequency of the non-contact gas measuring device 100 is fixed, this process becomes unnecessary.
  • the non-contact gas measuring device 100 is controlled, and an electromagnetic wave is made into a specific frequency (step S207).
  • the frequency of the electromagnetic wave is changed by changing the voltage or current of the transmitter / receiver 102.
  • the measurement of the measurement target gas 601 is started, and the reception oscillation unit 101 acquires the value of the current or the voltage (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 the measurement of all the frequencies is completed, the measurement ends.
  • measurement is completed at two frequencies of 0.558 THz and 0.600 THz of frequency 802. Determine if it is present and repeat until measurement is complete.
  • the analysis unit 410 performs analysis using the values 905 of the measurement result table 900 (step S210).
  • the system control unit 400 having received the measurement end instructs the analysis unit 410 to analyze the measured data, and the analysis unit 410 analyzes the data by referring to the measurement result table 900 on the memory 430. Do.
  • the first is an electromagnetic wave in which the object 600 is irradiated with a frequency that is highly sensitive to water vapor, for example, a frequency of about 0.558 THz. Since the electromagnetic waves reflected from the skin return, the intensity including information on water vapor in the air, water vapor transpired from the skin, absorption by the skin, and diffusion of internally reflected light is detected.
  • the second is an electromagnetic wave in which the information correction unit 200 is irradiated with a frequency with high sensitivity 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 of water vapor in the air is detected.
  • the third is an electromagnetic wave in which the object 600 is irradiated with a frequency at which the sensitivity to water vapor is low, for example, a frequency of about 0.600 THz. Since the electromagnetic wave reflected from the skin returns, the intensity including information of absorption by the skin and diffusion of internally reflected light is detected.
  • the fourth is an electromagnetic wave in which the information correction unit 200 is irradiated with a frequency at which the sensitivity due to water vapor is low, for example, a frequency of about 0.600 THz. Only the electromagnetic wave reflected by the mirror is returned and can be used as a reference signal.
  • the first and second detection results include attenuation by water vapor in the same air. Therefore, the difference between the first and second is attenuation due to diffusion of absorption and internal reflection light by the skin and attenuation due to water vapor transpired from the skin.
  • the difference between the third and fourth is the attenuation due to the diffusion of absorbed and internally reflected light by the skin. Therefore, by subtracting the third and fourth differences from the first and second differences, it is possible to detect attenuation due to water vapor transpired from the skin.
  • the system control unit 400 stores the result analyzed 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 the process of step S212.
  • the system control unit 400 displays the analysis result on the output unit 422. For example, as shown in FIG. 5, a display is made on the output unit 422 so that the user can recognize the analysis result (step S212).
  • the system control unit 400 detects the failure and outputs an alert to the output unit 422.
  • the output unit 422 is a liquid crystal display
  • the content of the alert is displayed.
  • the output unit 422 is a speaker or the like
  • an alert is transmitted by a sound such as a voice or a buzzer.
  • the output unit 422 is an LED, an alert is notified by light or the like.
  • the reception / oscillation unit 101 that emits and receives an electromagnetic wave can be integrated with a simple configuration, and the non-contact gas measurement apparatus 100 can be miniaturized.
  • the object 600 is irradiated with an electromagnetic wave, and the measurement target gas 601 is measured from the strength of the reflected wave, so that the reception oscillation unit 101 is separated from the object 600, that is, measured 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 or the like, so high-accuracy measurement can be performed without limitation on the measurement location.
  • the burden on the affected part of the user can be reduced.
  • the measurement accuracy of the non-contact gas measurement system 500 can be improved by measuring the gas to be measured using the correction wave by the information correction unit 200.
  • FIG. 13 is an explanatory diagram showing an example of the configuration of the reception and oscillation units 101 and 101a and the information correction unit 200 according to the second embodiment.
  • the configuration is such that the measurement wave and the correction wave are respectively acquired by one reception oscillation unit 101, but in the case of FIG. 13, the reception oscillation which is the first reception oscillation unit In addition to the unit 101, 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.
  • the structure in the other non-contact gas measurement system 500 since it is the same as that of FIG. 4 of the said Embodiment 1, description is abbreviate
  • 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 101 a to remove the influence of the 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 receiving oscillation unit 101 irradiates an electromagnetic wave to the object 600 to be measured, receives the reflected wave irradiated by the object 600, and acquires a current or voltage value according to the intensity of the received reflected wave.
  • the electromagnetic wave emitted from the reception oscillation unit 101 passes through the gas 601 to be measured, is reflected on the object 600 and is returned, thereby measuring the measurement wave.
  • the correction wave can be more accurately acquired 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 view showing an example of a configuration of the portable terminal 560 according to the third embodiment.
  • the portable terminal 560 includes the 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 specific technique.
  • the communication unit 450 is wirelessly connected to a communication line such as, for example, an Internet line or a telephone communication line, and performs communication with the outside.
  • FIG. 14 shows an example of connection with a server 460 externally connected by the communication unit 450.
  • the communication unit 450 transmits and receives, to the server 460, information acquired by, for example, the non-contact gas measurement apparatus 100, the distance measurement unit 300, and the imaging unit 440.
  • the imaging unit 440 may be, for example, an R (Red) G (Green) B (Blue) camera having sensitivity to visible light wavelength, an infrared light camera having sensitivity to infrared light, or an RGB camera having sensitivity to wavelengths from infrared to visible light. and so on.
  • it may be an RGB camera having sensitivity to the wavelength of visible light to ultraviolet light, or from infrared light to visible light to ultraviolet light wavelength.
  • the input / output unit 420 of the non-contact gas measurement system 500 may use an input / output unit such as a touch panel of the portable terminal 560.
  • the non-contact gas measurement system 500 is provided in a portable terminal 560 such as a smartphone, but for example, the non-contact gas measurement system 500 newly includes an imaging unit 440 and a communication unit 450 which are functions of the portable terminal 560. It may be configured to be added. ⁇ Overview of mobile terminal>
  • FIG. 15 is an explanatory view showing an example of an overview of the portable terminal 560 of FIG. FIG. 15 (a) shows the front of the portable terminal 560, and FIG. 15 (b) shows the back of the portable terminal 560.
  • the surface on which the input / output unit 420 is provided is taken as the front of the portable terminal 560, and the surface facing it is taken as the back.
  • an image can be taken by the imaging unit 440 from either the front side of the portable terminal 560 shown in FIG. 15A or the back side of the portable terminal 560 shown in FIG. It is a structure.
  • FIG. 16 is an explanatory view showing an example of display by the input / output unit 420 which the portable terminal 560 of FIG. 15 has.
  • the input / output unit 420 is formed of, for example, a touch panel display.
  • a menu screen for the user to select a measurement target for example, a menu screen for the user to select a measurement target, or as shown in FIG. 16B, an image captured by the imaging unit 440 or Display the analysis result etc.
  • the name of the gas to be measured that can be measured is displayed so that the user can select one.
  • the measurement target gas 601 selected by the user can be easily applied to input information in the process of step S201 of FIG. Can.
  • a measurement result as shown in FIG. 16B, for example, a graph in which the amount of percutaneous water evaporation is displayed in time series, a measurement position marker indicating the previous measurement position acquired by the imaging unit 440, etc. It may be displayed at 420.
  • a measurement position marker indicating the previous measurement position acquired by the imaging unit 440, etc. It may be displayed at 420.
  • FIG. 17 is a flowchart showing an example of an operation of gas measurement by the portable terminal 560 of FIG.
  • step S301 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.
  • the imaging unit 440 captures an image of 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 result captured by the imaging unit 440 last time or before, and the result is notified to the user by displaying the result on the output unit 422.
  • the 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 may be used as a sound, for example, a change in pitch or volume It is also possible to notify by a change of, or by voice.
  • the object 600 is photographed at the front of the imaging unit 440 of FIG. 15A, that is, the portable terminal 560, or the object 600 is at the imaging unit 440 of FIG. It is determined whether the image has been taken on the side, and the measurement by the reception oscillation unit 101 is performed on the side of the taken image.
  • the gas to be measured 601 is present on the front of the portable terminal or on the back, imaging can be easily performed.
  • the reception oscillation unit 101 on the back side of FIG. 15 (b) is used, and in the case of measuring the face etc., the reception oscillation unit 101 in the front of FIG. Do.
  • the user can measure while looking at the display as 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 process of step S303 is similar to the process of steps S202 to S209 of FIG.
  • the measurement result is transmitted (step S304).
  • the system control unit 400 transfers measurement results 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.
  • the server 460 performs analysis of 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 convenience of the user can be further improved by providing the non-contact gas measurement system 500 in the portable terminal 560. Further, since the analysis of the measurement target gas 601 is analyzed 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 further simplified, contributing to downsizing and cost reduction. be able to.
  • the present invention is not limited to the above-mentioned embodiment, and various modifications are included.
  • the imaging unit 440 and the distance measurement unit 300 in FIG. The system can be realized.
  • Reference Signs List 100 non-contact gas measuring apparatus 101 reception oscillation unit 101a reception oscillation unit 102 transmission / reception device 103 lens 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 Non-contact gas measurement system 560 Mobile terminal 600 Object 601 Measurement target gas

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Abstract

La présente invention permet de mesurer un gaz provenant d'un objet au moyen d'une configuration simple correspondante, sans influencer la peau d'un utilisateur et similaire. Dans un système de mesure de gaz sans contact (500) selon la présente invention, un dispositif de mesure de gaz sans contact (100) mesure un gaz (601) à mesurer généré par un objet (600), à l'aide d'une onde électromagnétique. Une unité d'analyse (410) analyse le gaz (601) à mesurer à partir d'une valeur de mesure mesurée par le dispositif de mesure de gaz sans contact (100). Le dispositif de mesure de gaz sans contact (100) comprend une unité à oscillation de réception de signal et une unité de commande. L'unité à oscillation de réception de signal émet et détecte une onde électromagnétique. L'unité de commande commande l'unité à oscillation de réception de signal. L'unité à oscillation de réception de signal émet en sortie à l'unité d'analyse (410) une valeur d'une tension ou d'un courant qui change en réponse à une intensité d'une onde électromagnétique réfléchie par l'objet (600) après que l'onde électromagnétique a été irradiée sur l'objet (600) en tant que valeur de mesure, conformément à une instruction de l'unité de commande.
PCT/JP2018/045075 2017-12-15 2018-12-07 Dispositif de mesure de gaz sans contact, système de mesure de gaz sans contact, terminal portatif et procédé de mesure de gaz sans contact WO2019117032A1 (fr)

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JP7323682B2 (ja) * 2017-12-15 2023-08-08 マクセル株式会社 非接触ガス計測装置、非接触ガス計測システム、携帯端末、および非接触ガス計測方法

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