JP2009281807A - Component analyzer and biological information measuring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive component analyzer can perform high-sensitivity analysis, and a biological information measuring device can check a health state by performing component analysis in a non-invasive way. <P>SOLUTION: In a cavity part 32, an optical fiber 30A and an optical fiber 30B are arranged separately so that each concave surface is faced each other, wherein each optical fiber is constituted of a single mold fiber 50, a graded index type optical fiber 52 having a larger diameter than the single mold fiber 50, and a fiber type flat-and-concave lens 54 having a light reflection film 56 of TiO2 formed on the outermost surface. The biological information measuring device 10 obtains biological information based on a correspondence relation between a concentration of a specific component stored in a correspondence relation storage part 42 and the biological information, and on the concentration of the specific component in gas which is a material to be measured, evaporated from a material excreted from a human body in a toilet bowl 1 analyzed by the component analyzer 10, and stores the information in a biological information storage part 46, or displays it on an input/output part 48. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a component analysis device and a biological information measurement device, and more particularly to a component analysis device and a biological information measurement device using cavity ring-down spectroscopy.

  In recent years, due to the effects of satiety, lack of exercise, etc., there has been an increase in the number of people suffering from diabetes, vascular diseases, etc. due to excessive intake of lipids and vegetables. Excess lipid leads to an increase in cholesterol, which accumulates in blood vessels, causing myocardial infarction and cerebral infarction.

  It is effective to check daily health status for early detection and treatment of illness. As a method of measuring biological information for checking the health condition, a method of collecting blood is the most effective. However, since this method collects blood necessary for life support, there are limitations on the number of measurements, and it is practically difficult to collect it from an unaffected person on a daily basis. Therefore, as a method for measuring living body information in a non-invasive manner, there is an analysis method using what is discharged from the living body, and an inspection using excrement is performed.

  As an inspection using excrement, there is known a technique for checking the health condition of a toilet user by detecting property information on the shape, color, and smell of the excrement in the toilet with a CCD camera, an odor sensor, or the like ( For example, see Patent Document 1).

  As an analyzer for use in such an inspection, for example, a gas analyzer can be cited, but gas analyzers used in atmospheric analysis and the like are expensive from several million to tens of millions of yen per unit. . To check the health condition every day, it is effective to equip the toilet for home use, but it is too expensive for home use, so a low-cost analyzer is required.

As such a small and low-priced component analysis apparatus, an analysis apparatus using a cavity ring-down spectroscopic system that performs component analysis of a substance to be measured by combining an optical fiber and a directional coupler is known (for example, , See Patent Document 2).
JP-A-4-225161 JP 2004-333337 A

  However, in the above-described conventional analyzer, since the end face of the optical fiber is a parallel surface, light emitted from the end face of the optical fiber to the space spreads to generate light that cannot be coupled to the end face of the opposing optical fiber. In order to prevent this, there is a restriction that the spatial distance between the end faces of the optical fibers cannot be widened. Therefore, the portion into which the measurement target substance is introduced is narrow and the substantial optical length is short. It is difficult to perform an analysis.

  An object of this invention is to provide the low-cost component analyzer which can perform a highly sensitive analysis. It is another object of the present invention to provide a biological information measuring apparatus that can check a health condition by performing component analysis in a non-invasive manner.

  In order to achieve the above object, the component analyzer according to claim 1 includes a measurement light source that emits measurement light, a first optical fiber that receives light from the measurement light source, The second optical fiber having a larger core diameter for introducing light than the first optical fiber and the first plano-concave lens having a concave surface on which the first light reflecting film is formed are joined in this order. A first optical waveguide means, a second plano-concave lens having a concave surface on which light from the first optical waveguide means is incident and on which a second light reflecting film is formed, and a third light A second optical waveguide unit in which a fiber and a fourth optical fiber having a smaller core diameter for introducing light than the third optical fiber are joined in this order; and the first plano-concave lens The concave surface and the concave surface of the second plano-concave lens are arranged so as to face each other, A space part for enclosing a substance to be measured composed of a liquid, a cavity part having an introduction part for introducing the substance to be measured into the space part, and measurement light emitted from the measurement light source Detection means for detecting light that is emitted through the first optical waveguide means and emitted to the substance to be measured, and the irradiated light is guided through the second optical waveguide means; and the detection means Measuring means for measuring the concentration of the specific component in the substance to be measured based on the detection result of

  The measurement light source emits measurement light. The measurement light is light having a predetermined wavelength for each specific component in the substance to be measured. The first optical waveguide means includes a first optical fiber, a second optical fiber having a larger core diameter for introducing light than the first optical fiber, and a concave surface on which the first light reflecting film is formed. The first plano-concave lens is joined in this order, the measurement light is incident on the first optical fiber, and the guided light is irradiated from the first plano-concave lens. The second optical waveguide means includes a second plano-concave lens having a concave surface on which a second light reflecting film is formed, a third optical fiber, and a diameter of a core for introducing light more than the third optical fiber. Are joined in this order, and light from the first optical waveguide means is incident on the third optical fiber.

  In the cavity portion, the concave surface of the first plano-concave lens and the concave surface of the second plano-concave lens are arranged so as to face each other, and are provided with a space portion and an introduction portion. A substance to be measured made of gas or liquid introduced from is sealed in the space.

  The detecting means detects the light that is measured and emitted through the first optical waveguide means, irradiates the material to be measured, and the irradiated light is guided through the second optical waveguide means. To do. The measuring means measures the concentration of the specific component in the substance to be measured based on the detection result of the detecting means.

  As a result, the second light of the second optical waveguide means facing all the light emitted from the concave surface of the first plano-concave lens of the first optical waveguide means formed by the optical fiber to the space in the cavity. Since it becomes possible to couple to the concave surface of the plano-concave lens, the distance between the concave surfaces can be increased and the space can be enlarged, so that highly sensitive analysis can be performed. Further, since the first optical waveguide means and the second optical waveguide means are formed by a relatively low cost optical fiber, it can be provided at a low price.

  The component analyzer according to claim 2 is the component analyzer according to claim 1, wherein the measurement light source emits pulsed light having a wavelength determined for each specific component in the substance to be measured. Light source.

  By making the measurement light source a variable wavelength light source, pulsed light having a wavelength determined for each specific component in the substance to be measured is emitted. Thereby, component analysis can be performed for a plurality of specific components contained in the substance to be measured.

  The component analyzer according to claim 3 is the component analyzer according to claim 1 or 2, wherein at least part of the first light reflection film and the second light reflection film is a titanium oxide film. And an ultraviolet light source that emits ultraviolet light, and the measurement light source and the ultraviolet light source, and the light emitted from any one of the measurement light source and the ultraviolet light source is input to the first light source. Optical coupling means for outputting to the optical waveguide means.

  The first light reflection film and the outermost surface film of the second light reflection film formed on the concave surfaces of the first plano-concave lens and the second plano-concave lens are titanium oxide films, and an optical light source is provided with an ultraviolet light source. By outputting the ultraviolet light source to the first optical waveguide means by the means, the ultraviolet light is applied to the concave surfaces of the first plano-concave lens and the second plano-concave lens. Thereby, since the concave surfaces of the first plano-concave lens and the second plano-concave lens can be cleaned by the photocatalytic action of titanium oxide, highly sensitive measurement can be performed.

  The component analyzer according to claim 4 is the component analyzer according to any one of claims 1 to 3, wherein the introduction part is connected to an inner surface of a water reservoir part of the toilet body, and the toilet body Introduce the substance to be measured inside the water reservoir of

  By measuring the concentration of the specific component in the substance to be measured introduced from the inner surface of the water reservoir of the toilet body, component analysis can be performed non-invasively on the human body.

  The component analyzer according to claim 5 is the component analyzer according to claim 4, further comprising detection means for detecting the presence or absence of a substance to be measured on the inner surface of the water reservoir of the toilet body, wherein the measurement means comprises: When it is detected that the substance to be measured is present on the inner surface of the water reservoir of the toilet body, the concentration of the specific component in the substance to be measured is measured.

  When the detection means detects the presence of the substance to be measured on the inner surface of the water reservoir portion of the toilet body, the measurement means can measure the concentration of a specific component in the substance to be measured. When there is no substance to be measured on the inner surface of the part, it is possible to prevent the measurement.

  The biological information measuring device according to claim 6 is the component analysis device according to claim 4 or 5, and the concentration and biological information of the specific component in the substance to be measured in the inner surface of the water reservoir portion of the toilet bowl body determined in advance. A correspondence storage means for storing the correspondence relationship, and the concentration of the specific component in the substance to be measured on the inner surface of the water reservoir portion of the toilet body measured by the component analyzer according to claim 4 or 5, Biometric information acquisition means for acquiring biometric information based on the correspondence relation stored in the correspondence relation storage means.

  The correspondence relationship storage means stores a correspondence relationship between the concentration of the specific component in the substance to be measured in the inner surface of the water reservoir of the toilet body and the biological information. The biological information acquisition means is based on the concentration of the specific component in the substance to be measured in the inner surface of the water reservoir of the toilet body measured by the component analyzer according to claim 4 or 5, and the correspondence relationship. To get. Thereby, since biological information can be acquired based on the result of non-invasive component analysis on the human body, the health condition can be checked by non-invasive component analysis.

  The biological information measuring device according to claim 7 is the biological information measuring device according to claim 6, further comprising display means for displaying information relating to the biological information acquired by the biological information acquiring means.

  The display means displays information related to biological information. Thereby, the user can know the information regarding biometric information.

  A biological information measuring device according to an eighth aspect of the present invention is the biological information storage device according to the sixth or seventh aspect, further comprising biological information storage means for storing information relating to biological information acquired by the biological information acquisition means. .

  The biological information storage unit stores information related to biological information. Thereby, the change of the information regarding biometric information, etc. can be known easily.

  As described above, according to the present invention described in claims 1 to 5, in the cavity ring-down spectroscopy using an optical fiber, all of the light emitted from the end face of the optical fiber to the space in the cavity is obtained. Since light can be coupled to the end faces of the opposing optical fibers, the distance between the end faces of the optical fibers can be increased and the space can be enlarged, so that low-cost component analysis can be performed with high sensitivity. The effect that an apparatus can be provided is acquired.

  According to the present invention described in claims 6 to 8, since the concentration of the specific component in the substance to be measured in the inner surface of the water reservoir of the toilet body is measured and the biological information is acquired, the component analysis can be performed non-invasively. The effect of being able to check the health condition is obtained by doing.

[First Embodiment]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the present embodiment, the substance to be measured is a gas (gas), and the concentration of a specific component in the gas volatilized from the excrement (mainly defecation) is measured and analyzed by a component analyzer. Based on this, biological information is measured.

  FIG. 1 shows a cross-sectional view of an example of a schematic configuration of a toilet equipped with a biological information measuring device including a component analyzer according to the present embodiment.

  In the present embodiment, a biological information measuring device 10 including a component analyzer (described later in detail) is installed on the back side of the western toilet 1, and a substance to be measured is sucked from the inside of the toilet 1 so that a cavity of the component analyzer is obtained. An introduction pipe 34 for introducing a substance to be measured into a space portion (described later in detail) is connected to a position higher than the liquid level in the toilet 1.

  In the present embodiment, the sensor 38 (detection means) is connected to the front side of the toilet 1. In the present embodiment, the sensor 38 is a human body detection sensor for detecting that the user uses the toilet 1, and the substance to be measured is present in the toilet 1 when the user is using it. Detect as a thing. Specific examples of the sensor 38 include an infrared sensor, a touch sensor provided on the toilet seat (not shown) of the toilet 1, a liquid level sensor that detects a rise in the liquid level in the toilet 1, and the like. In the present embodiment, the front side of the toilet 1 is the side on which the human body stands (sits), and the back side usually means the side to which the lid (not shown) of the toilet 1 is connected.

  With reference to FIG. 2, the biological information measuring apparatus 10 of this Embodiment is demonstrated in detail. FIG. 2 is a schematic configuration diagram illustrating an example of a schematic configuration of the biological information measuring apparatus 10 of the present embodiment.

  The biological information measuring apparatus 10 according to the present embodiment includes a component analyzer 20, a control unit 40, a correspondence relationship storage unit 42, a biological information acquisition unit 44, a biological information storage unit 46, and an input / output unit (display unit) 48. Configured.

  The component analyzer 20 will be described in detail. The component analyzer 20 according to the present embodiment analyzes the concentration of a specific component in a substance to be measured by an optical fiber type cavity ring-down spectroscopic method. Cavity ring down spectroscopy (hereinafter referred to as CRDS) is a method in which pulsed light is incident on a cavity part into which a substance to be measured is introduced, and the pulsed light is reflected in the cavity part while being multiple-reflected. This is a method of measuring the light absorption characteristics by analyzing the temporal change in the amount of light emitted outside the unit, identifying the components contained in the substance to be measured from the measurement results, and measuring the amount.

  The component analyzer 20 of the present embodiment includes a measuring unit 22, a wavelength tunable laser (wavelength tunable light source) 24, an ultraviolet light laser (ultraviolet light source) 26, a coupler 28, and an optical fiber (optical waveguide, first optical waveguide). Means) 30A and an optical fiber (optical waveguide part, second optical waveguide means) 30B, a cavity part 32, an introduction tube 34, a photodetector 36, and a sensor 38.

  The wavelength tunable laser 24 used as a measurement light source is a wavelength tunable laser in the near infrared region, and emits laser light (pulsed light 25) having a wavelength determined for each specific component in the substance to be measured. . In the present embodiment, as a specific example, the tunable laser 24 having a center wavelength of 1.55 μm and a bandwidth of 40 nm is used. However, the present invention is not limited to this, and the tunable laser 24 of another wavelength band may be used. Good.

  An ultraviolet laser 26 used as an ultraviolet light source is a semiconductor laser in the ultraviolet region, and emits ultraviolet light for cleaning the resonator mirror (details will be described later). In the present embodiment, as a specific example, an ultraviolet laser 26 having a wavelength of 385 nm is used.

  The wavelength tunable laser 24 and the ultraviolet laser 26 emit laser light to the cavity portion 32 through the coupler 28 and the optical fiber (optical waveguide portion) 30A. In this embodiment, the coupler 28 is used. However, the present invention is not limited to this, and the laser light input from one of the two types of light sources is output to the fiber 30A using another method. Also good.

  The cavity portion 32 and the pair of optical fibers 30 (optical fibers 30A and 30B) of the optical fiber type CRDS of the present embodiment will be described in detail with reference to FIG.

  As shown in FIG. 3A, the optical fiber 30 of the present embodiment includes a single mold fiber 50 (first optical fiber 50A and fourth optical fiber 50B), and a graded index optical fiber 52 (second optical fiber). Optical fiber 52A, third optical fiber 52B), and fiber-type plano-concave lens 54 (first plano-concave lens 54A, second plano-concave lens 54B) on which a light reflecting film 56 is formed. In the present embodiment, as a specific example, the outer diameters of the single mold fiber 50, the graded index optical fiber 52, and the fiber-type plano-concave lens 54 are all 250 μm.

  As a specific example, the single mold fiber 50 of the present embodiment uses a step index type optical fiber having a core diameter of about 6 μm for introducing light.

  The graded index optical fiber 52A spreads the light density guided from the single mode fiber 50A and radiates it as parallel light to the space 57 in the cavity 32. Conversely, the graded index optical fiber 52B In this case, the light emitted from the space portion 57 in 32 is condensed again and coupled to the single mode fiber 50B. In the present embodiment, as a specific example, a length of 3 mm, a core diameter of 50 μm, and a refractive index that increases as it approaches the vicinity of the center is used.

  The fiber-type plano-concave lens 54 is a resonator mirror for condensing light emitted to the space 57 in the cavity 32. When the end face of the optical fiber 30 is a parallel plane, light emitted from the end face of the optical fiber to the space 57 in the cavity portion 32 spreads and becomes unable to be coupled to the opposing optical fiber 30, in order to prevent this. belongs to.

  A light reflecting film 56 is formed on the concave surface of the fiber-type plano-concave lens 54. By increasing the reflectance of the light reflecting film 56, light can be confined in the space 57 in the cavity 32 for a long time, and the effective optical length can be increased, so that highly sensitive detection can be performed. It becomes. In this embodiment, a dielectric multilayer film having a titanium oxide film on the outermost surface having a reflectance of about 99.9% is used. As a specific example, a fiber-type plano-concave lens 54 in which a multilayer film of TiO 2 and SiO 2 is formed on the concave surface and a λ / 2 film of TiO 2 is formed at the last (outermost surface) is used.

  The most exposed outermost surface portion of the light reflecting film 56 is a titanium oxide film, and ultraviolet light emitted from the ultraviolet light laser 26 is irradiated from the optical fiber 30, whereby a resonator mirror portion (concave surface of the fiber-type plano-concave lens 54 is formed. Part) can be washed. When CRDS is used, various substances such as a substance to be measured are adsorbed on the resonator mirror part (concave part of the fiber-type plano-concave lens 54). As a result, the light is scattered, the transparency is deteriorated, and the S / N ratio of the photodexter is lowered. In the present embodiment, by using titanium oxide having a strong photocatalytic action, the adsorbed substance can be forcibly decomposed and washed. Thereby, high measurement reliability can be ensured continuously for a long period of time. In this embodiment, a titanium oxide film is used. However, the present invention is not limited to this, and other reflective films having a strong photocatalytic action may be used.

  Note that various parameters such as the core diameter of the single mold fiber 50 and the graded index optical fiber 52 and the reflectance of the fiber-type plano-concave lens 54 are not limited to the above-described values, but have a certain size. In addition, it is sufficient that after the beam is expanded, all the light reaches the opposite resonator mirror by collimating or condensing it.

  The fiber-type plano-concave lens 54 on which the single mold fiber 50, the graded index optical fiber 52, and the light reflecting film 56 are formed is fused as shown in FIG. 3B to form the optical fiber 30.

  As shown in FIG. 3C, a pair of optical fibers 30 (optical fiber 30A and optical fiber 30B) are arranged in the cavity portion 32 so as to face each other. In the present embodiment, as a specific example, The space between the resonator mirrors is about 10 mm, and the space portion is a space portion 57. A substance to be measured (gas) introduced from the toilet 1 by the introduction pipe 34 is filled in the space 57. The introduced gas is discharged to the outside of the biological information measuring apparatus 10 through a discharge unit (not shown) or the introduction pipe 34 after measuring the concentration of the specific component.

  FIG. 4 shows an example of the structure for disposing the optical fiber 30A and the optical fiber 30B at positions separated so as to face each other in the present embodiment. The optical fiber 30A and the optical fiber 30B were respectively arranged and fixed on the grooves 58A and B on the substrate 56 in which the V-shaped grooves 58A and 58B were formed at opposite positions. For example, instead of the V-shaped grooves 58A and 58B, a cylindrical guide, a cylindrical sleeve, or the like may be used, and the substrate 56 may be made of various materials such as quartz glass and ceramics. Things can be used. The optical fiber 30A and the optical fiber 30B are not particularly limited as long as the optical fibers 30A and the optical fibers 30B can be disposed and fixed at positions separated from each other.

  In the present embodiment, the first optical fiber 50A and the fourth optical fiber 50B are single mold fibers, and the second optical fiber 52A and the third optical fiber 52B are graded index optical fibers 52. However, the present invention is not limited to this, and any of the optical fibers may be a single mold fiber, a graded index optical fiber, or the same optical fiber.

  Further, in the present embodiment, the optical fiber 30A and the optical fiber 30B are configured as a pair of optical fibers 30, and thus are substantially the same. However, the present invention is not limited to this, and the optical fiber 30A has different core diameters. And the optical fiber 30B may be different.

  The photodetector 36 detects the light that is emitted by multiple reflection in the cavity portion 32 and is guided by the laser light focused on the optical fiber 30B on the detection side. In the present embodiment, an InGaAs photodetector is used as a specific example.

  The measurement unit 22 quantitatively measures the substance amount (concentration) of the specific component in the gas by measuring the process (attenuation wave 37) in which the intensity of light detected by the photodetector 36 is attenuated with time. . In addition, although it can measure with respect to several types of specific component, since the molecular weight and atomic arrangement which differ for every specific component are shown, each peculiar interaction is shown with respect to the frequency of light. That is, the absorption characteristics are different for each specific component. Therefore, in the present embodiment, measurement light having a predetermined wavelength for each specific component to be measured is output from the wavelength variable laser 24 and measured by the measurement unit 22.

  Thereby, in the component analyzer 20 of this Embodiment, it can identify correctly with respect to each of the several specific component contained in gas.

  The control unit 40 is responsible for overall control of the biological information measuring apparatus 10, and includes a CPU, a ROM, a RAM (all not shown), and the like.

  The correspondence storage unit 42 is for storing in advance the correspondence between the concentration of the specific component measured by the component analyzer 20 and the biological information. The biological information is information relating to the human body and is information required for checking the health condition. The biometric information acquisition unit 44 is for acquiring information related to biometric information based on the correspondence relationship stored in the correspondence relationship storage unit 42 and the concentration of the specific component measured by the component analyzer 20. The information related to biological information is information indicating a health condition, for example. The biological information storage unit 46 is for storing information related to biological information acquired by the biological information acquisition unit 44.

  The input / output unit (display unit) 48 is used by the user to input information related to the measurement of biological information and to output (display) information related to the biological information to the user. In the present embodiment, the current measurement result, information related to biological information stored in the biological information storage unit 46, and the like are output (displayed). Specific examples include a touch panel and a liquid crystal display. Note that information related to biometric information may be output to a computer or the like using a wireless line, or may be sent to the outside (a hospital or the like) using a communication line. In the present embodiment, the user inputs personal information for identifying the individual user from the input / output unit 48, and stores the information related to the acquired biometric information in the biometric information storage unit 46 in association with the personal information. By doing so, it is possible to check the change in the health condition of the user by, for example, outputting the measurement result in the form of a graph.

  Next, biometric information measurement processing will be described in detail with reference to FIG. FIG. 5 is a flowchart illustrating an example of the biological information measurement process according to the present embodiment. For example, when the biological information measurement apparatus 10 is powered on, the control unit 40 executes the process.

  First, in step 100, it is determined whether or not the resonator mirror (plano-concave lens 54) is to be cleaned. For example, when the biological information measuring device 10 is turned on, when a predetermined number of measurements are performed, after a predetermined time has elapsed, or after completion of the measurement, it is a predetermined timing to perform cleaning. If the user inputs an instruction to execute the cleaning process, the determination is affirmative, and the process proceeds to step 102.

  In step 102, ultraviolet light is emitted from the ultraviolet laser 26 to perform a cleaning process, and then the process proceeds to step 112.

  On the other hand, if the cleaning is not performed, such as when it is not time to perform cleaning, the determination is negative and the process proceeds to step 104. In step 104, it is determined whether or not the sensor 38 has detected that the substance to be measured is present in the toilet 1 (in this embodiment, whether or not the human body has approached the toilet 1). If not detected, the determination is negative, the process returns to step 100, and this process is repeated. On the other hand, if it is detected, the determination is affirmative, and the routine proceeds to step 106 where analysis (concentration measurement) of a specific component in the gas is performed. In this step, the process proceeds to step 106 when the sensor 38 detects it, but in addition to this, the process may proceed to step 106 when the user inputs a measurement instruction through the input / output unit 48.

  In step 106, the component analyzer 10 is instructed to measure the concentration of the specific component in the substance to be measured. In response to the instruction, the component analysis apparatus 10 introduces a substance to be measured (gas) from the toilet 1 through the introduction tube 34 and encloses the substance in the space 57 in the cavity 32. The wavelength tunable laser 24 emits measurement light having a predetermined wavelength, and the light guided through the optical fiber 30A is applied to the substance to be measured in the cavity 32 and is incident on the optical fiber 30B. The light guided through the optical fiber 30 </ b> B is detected by the photodetector 36, and the measurement unit 22 measures the decay time of the laser light detected by the photodetector 36. After the measurement, the gas sealed in the space 57 is discharged to the outside of the biological information measuring device 10 by the discharge unit. In addition, when measuring the density | concentration of several specific component contained in gas, the wavelength of the wavelength variable laser 24 is switched to the wavelength predetermined for every specific component, a laser beam is emitted, and the density | concentration of a specific component similarly Repeat the process of measuring. For example, if the measurement unit 22 or the control unit 40 gives instructions by programming, or the control unit is provided in the component analyzer 20, and the control unit gives instructions to switch wavelengths. Good.

  In the next step 108, the biological information acquisition unit 44 acquires information related to the biological information based on the concentration of the specific component measured in step 106 and the correspondence relationship stored in the correspondence relationship storage unit 42.

  In the next step 110, information about the acquired biological information is stored in the biological information storage unit 46 and displayed on the input / output unit (display unit) 48. Thereby, the user can check his / her health condition such as indigestion and its change, for example.

  In the next step 112, it is determined whether or not to end this process. If not, the determination is negative, the process returns to step 100, and this process is repeated. On the other hand, when the power supply of the biological information measuring device 10 is turned off, the determination is affirmed, and this process is terminated.

  As described above, the cavity portion 32 of the component analyzer 20 using the CRDS of the present embodiment includes the single mold fiber 50 (the first optical fiber 50A and the fourth optical fiber 50B) and the single mold fiber 50. Also, a graded index optical fiber 52 (second optical fiber 52A, third optical fiber 52B) having a large core diameter for introducing light, and a fiber type flat having a light reflecting film 56 of TiO2 formed on the outermost surface. The concave surface of the optical fiber 30A configured by the concave lens 54 (the first plano-concave lens 54A and the second plano-concave lens 54B) and the concave surface of the optical fiber 30B are disposed so as to face each other.

  Thereby, the concave surface of the first plano-concave lens 54A and the concave surface of the second plano-concave lens 54B can be used as a resonator mirror, and the light emitted from the concave surface of the first plano-concave lens 54A to the space portion 57. Since all the light reaches the opposing second plano-concave lens 54B, the distance of the resonator mirror can be increased. Since the space portion 57 can be enlarged, light absorption can be increased, and therefore, highly sensitive analysis can be performed. In addition, since a relatively inexpensive optical fiber is used, a low-cost component analyzer can be provided.

  In addition, the biological information measuring apparatus 10 of the present embodiment stores the correspondence between the concentration of the specific component and the biological information in the correspondence storage unit 42 in advance, and the correspondence analysis is analyzed by the component analyzer 10. The biological information is acquired based on the concentration of the specific component in the gas, which is the substance to be measured, volatilized from the substance excreted from the human body in the toilet 1, and stored in the biological information storage unit 46, or the input / output unit ( Display on the display unit) 48, the user can check the health state based on the result of non-invasive component analysis.

[Second Embodiment]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the present embodiment, the substance to be measured is a liquid, and the concentration of a specific component in the liquid (urination) is measured by a component analyzer, and the biological information is measured based on this. Since the configuration and operation are substantially the same as those of the first embodiment, detailed description of the same parts is omitted.

  FIG. 6 shows a cross-sectional view of an example of a schematic configuration of a toilet including the biological information measuring device 10 including the component analyzer 20 according to the present embodiment.

  A liquid containing urine collected in the toilet 1 is collected through a particle filter (not shown) and introduced into the space 57 of the cavity 32 through the introduction tube 34. The measured substance after measurement is discharged to the drainage channel of the toilet 1 through the discharge pipe 35.

  In the present embodiment, since the substance to be measured is a liquid, a red wavelength tunable laser 24 having a small absorption coefficient with respect to water is used as the measurement light source (wavelength tunable laser 24), and a silicon photodetector is used as the photodetector. ing. The interval between the resonator mirrors is 5 mm to constitute the CRDS. With this configuration, even when the substance to be measured is a liquid, the concentration of the specific component in the substance to be measured can be measured, and the component analysis can be performed.

  The biometric information measurement process may be performed in the same manner as in the first embodiment (see the flowchart in FIG. 5).

  As described above, in the present embodiment, the correspondence between the concentration of the specific component stored in the correspondence storage unit 42 and the biological information, the concentration of the specific component in urination analyzed by the component analyzer 10, and , And is stored in the biological information storage unit 46 or displayed on the input / output unit (display unit) 48, so that the user can perform the component analysis in a non-invasive manner. You can check your health.

  In the first embodiment and the second embodiment described above, the case where the toilet 1 is a Western-style toilet is illustrated and described in detail, but the present invention is not limited thereto, and the present invention is applied to a Japanese-style toilet. But you can do the same.

  Further, in the first embodiment and the second embodiment described above, the case of measuring the object to be measured in the toilet 1 has been described in detail. However, the present invention is not limited to this. It is possible to obtain the biological information measuring device 10 that acquires biological information by analysis. Moreover, it is good also as the biological information measuring device 10 which analyzes the blood extracted when a diabetic patient test | inspects a blood glucose level, and acquires biological information.

  Further, in the present embodiment, the case where the component analyzer 20 is used to acquire biological information by the biological information measuring device 10 is described in detail. However, the present invention is not limited to this, for example, the amount of scattered pollen in the air It can be used in various fields such as detection of exhaust gas, exhaust gas concentration inspection, alcohol concentration detector in automobiles, residual impurity concentration inspection after gas purification, monitoring of the reaction process, and agricultural chemical residual amount inspection. .

  In any case, in the component analyzer 20 of the present embodiment, in the CRDS using an optical fiber, all the light emitted from the end face of the optical fiber to the space in the cavity is coupled to the end face of the facing optical fiber. Since the distance between the optical fiber end faces can be increased and the space can be enlarged, a component analyzer that can perform highly sensitive analysis can be provided at a low price.

It is a schematic block diagram which shows sectional drawing of an example of schematic structure of the toilet bowl provided with the biological information measuring device containing the component analyzer which concerns on the 1st Embodiment of this invention. It is a schematic structure figure showing an example of a schematic structure of a living body information measuring device concerning a 1st embodiment of the present invention. It is explanatory drawing for demonstrating in detail an example of the cavity part and optical fiber (optical waveguide means) which concern on the 1st Embodiment of this invention. It is explanatory drawing for demonstrating an example of the structure of the cavity part for arrange | positioning in the position spaced apart so that the end surfaces of the optical fiber which concern on the 1st Embodiment of this invention may oppose. It is a flowchart which shows an example of the flow of the biometric information measurement process which concerns on the 1st Embodiment of this invention. It is a schematic block diagram which shows sectional drawing of an example of schematic structure of the toilet bowl provided with the biological information measuring device containing the component analyzer which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Toilet bowl 10 Biological information measuring device 20 Component analyzer 22 Measuring part 24 Wavelength variable laser (wavelength variable light source)
26 Ultraviolet light laser (ultraviolet light source)
28 Coupler (Optical coupling means)
30 optical waveguide section (30A first optical waveguide means, 30B second optical waveguide means)
32 Cavity 34 Introducing pipe 36 Photo detector 38 Sensor (detection means)
42 Correspondence relationship storage unit 44 Biometric information acquisition unit 46 Biometric information storage unit 48 Input / output unit (display means)

Claims (8)

A measurement light source that emits measurement light; and
A first optical fiber into which light from the measurement light source is incident, a second optical fiber having a larger core diameter for introducing light than the first optical fiber, and a first light reflecting film are formed. A first plano-concave lens having a concave surface, and a first optical waveguide means joined in this order;
A second plano-concave lens having a concave surface on which light from the first optical waveguide means is incident and a second light reflecting film is formed, a third optical fiber, and the third optical fiber A second optical waveguide means in which a fourth optical fiber having a smaller core diameter for introducing light is joined in this order;
A space for enclosing a substance to be measured made of gas or liquid, the concave surface of the first plano-concave lens and the concave surface of the second plano-concave lens are arranged so as to face each other, and A cavity part having an introduction part for introducing the substance to be measured into the space part;
Measurement light emitted from the measurement light source is guided through the first optical waveguide means and emitted to the substance to be measured, and the irradiated light passes through the second optical waveguide means. Detection means for detecting the guided light;
Measuring means for measuring the concentration of a specific component in the substance to be measured based on the detection result of the detecting means;
A component analysis apparatus comprising: The measurement light source is a variable wavelength light source that emits pulsed light having a wavelength determined for each specific component in the substance to be measured.
The component analyzer according to claim 1. At least a part of the first light reflection film and the second light reflection film is a titanium oxide film,
An ultraviolet light source that emits ultraviolet light;
An optical coupling means connected to the measurement light source and the ultraviolet light source, for inputting light emitted from either the measurement light source or the ultraviolet light source and outputting the light to the first optical waveguide means;
The component analyzer of Claim 1 or Claim 2 provided with these. The introduction part is connected to the inner surface of the water reservoir portion of the toilet body, and introduces a substance to be measured on the inner surface of the water reservoir portion of the toilet body.
The component analyzer according to any one of claims 1 to 3. Further comprising detection means for detecting the presence or absence of a substance to be measured on the inner surface of the water reservoir of the toilet body,
The measuring means measures the concentration of a specific component in the substance to be measured when it is detected that the substance to be measured is present on the inner surface of the water reservoir of the toilet body.
The component analyzer according to claim 4. The component analyzer according to claim 4 or 5,
Correspondence storage means for storing the correspondence between the concentration of the specific component in the substance to be measured in the inner surface of the water reservoir of the toilet body and the biological information,
The concentration of the specific component in the substance to be measured in the inner surface of the water reservoir of the toilet body measured by the component analyzer according to claim 4 or 5, and the correspondence stored in the correspondence storage means , Biometric information acquisition means for acquiring biometric information based on
A biological information measuring device. Comprising display means for displaying information relating to biological information acquired by the biological information acquisition means;
The biological information measuring device according to claim 6.   The biological information storage device according to claim 6 or 7, further comprising biological information storage means for storing information related to biological information acquired by the biological information acquisition means.

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