WO2017018116A1 - Module de capteur et système d'affichage d'informations biologiques - Google Patents

Module de capteur et système d'affichage d'informations biologiques Download PDF

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Publication number
WO2017018116A1
WO2017018116A1 PCT/JP2016/069209 JP2016069209W WO2017018116A1 WO 2017018116 A1 WO2017018116 A1 WO 2017018116A1 JP 2016069209 W JP2016069209 W JP 2016069209W WO 2017018116 A1 WO2017018116 A1 WO 2017018116A1
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Prior art keywords
light
light emitting
emitting element
light receiving
receiving element
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PCT/JP2016/069209
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English (en)
Japanese (ja)
Inventor
勝 桜井
勝義 茶円
幸夫 大瀧
吉村　隆
添田　薫
良 下北
Original Assignee
アルプス電気株式会社
ジーニアルライト株式会社
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Application filed by アルプス電気株式会社, ジーニアルライト株式会社 filed Critical アルプス電気株式会社
Publication of WO2017018116A1 publication Critical patent/WO2017018116A1/fr

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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
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters

Definitions

  • the present invention relates to a biological body that emits light including near-infrared light toward a subject, receives light that has passed through the subject, and generates a signal corresponding to the near-infrared light included in the received light.
  • the present invention relates to a sensor module for information estimation, and a living body related information display system including the sensor module.
  • the heart rate monitor disclosed in Patent Document 1 reflects or transmits light from a light emitting element to blood flowing through a blood vessel such as an artery, and the light receiving element detects the reflected or transmitted light. Then, the change in the blood flow flowing in the blood vessel is measured from the change in the intensity of the light detected by the light receiving element, and the number of pulsations of the change in the blood flow per unit time is calculated from this measured value. The pulsation number of blood flow change is detected as a heart rate (pulse rate).
  • the present invention is for solving the above-described conventional problems, and includes a sensor module that can acquire biological information even when attached to a site where a blood vessel is located at a relatively deep position, and the sensor module.
  • An object of the present invention is to provide a biological information display system.
  • a light emitting unit that emits light including near infrared light toward a subject, a light receiving unit that receives the light that has passed through the subject, A living body-related information estimation sensor module that generates a signal corresponding to near-infrared light included in light received by the light-receiving unit, wherein the light-emitting unit emits near-infrared light
  • the light receiving unit includes a light receiving element having sensitivity to near infrared light, the light receiving element is disposed to receive near infrared light emitted by the light emitting element, and the light emitting element is Provided is a sensor module which is arranged at a distance of 4 to 11 mm from the light receiving element, and the center wavelength of near infrared light emitted from the light emitting element is shorter than 805 nm.
  • the light emitting unit further includes another light emitting element that emits near infrared light
  • the light receiving unit further includes another light receiving element that is sensitive to near infrared light
  • the other light receiving element includes Arranged to receive near-infrared light emitted by another light emitting element, the other light emitting element is arranged at a distance of 4 mm to 11 mm from the other light receiving element, and the other light emitting element emits light.
  • the other center wavelength of near infrared light may be a wavelength longer than 805 nm.
  • the light emitting element may emit near-infrared light having the center wavelength and near-infrared light having another center wavelength different from the center wavelength, and the other center wavelength may be a wavelength longer than 805 nm.
  • the center wavelength may be 760 nm, and the other center wavelength may be 850 nm.
  • the center wavelength may be the wavelength of light that maximizes the light receiving sensitivity of the light receiving element.
  • the wavelength of light that maximizes the light receiving sensitivity of the light receiving element may be the central wavelength, and the wavelength of light that maximizes the light receiving sensitivity of the other light receiving elements may be the other central wavelength.
  • the light emitting unit includes a plurality of the light emitting elements that emit near-infrared light having the same center wavelength, and the light receiving element emits light emitted by two or more of the light emitting elements. It may be arranged to receive light.
  • the light receiving element may be arranged so as to be sandwiched between two light emitting elements included in the plurality of light emitting elements and to receive light emitted by at least the two light emitting elements.
  • the above-described sensor module, the biological-related information estimation unit that estimates biological-related information based on the signal generated by the light-receiving unit, and the biological-related information estimation unit There is provided a living body related information display system including a display unit for displaying living body related information.
  • the biological related information estimation unit may estimate at least one selected from blood hemoglobin change, blood oxygen ratio change, and pulse rate as biological related information.
  • the present invention it is possible to acquire biological related information even when a blood vessel is attached to a relatively deep position.
  • FIG. 1 is a perspective view of a living body related information display system according to an embodiment of the present invention.
  • FIG. 2 is a functional block diagram of the living body related information display system of FIG.
  • FIG. 3 is a perspective view of a sensor module provided in the biological information system of FIG.
  • FIG. 4 is a plan view of a substrate body included in the sensor module of FIG.
  • a living body related information display system 1 is worn so as to be in direct contact with an arm, a chest, etc. of a subject, which is a human living body, by a rubber band or the like, and estimates living body related information of the subject.
  • the portable sensor module 10 transmits the estimated biological information by wireless communication, and the display device 20 displays the biological information transmitted from the sensor module 10.
  • the sensor module 10 includes a light emitting unit 11, a light receiving unit 12, a control unit 13, a wireless communication unit 14, and a substrate body 16 having a substrate 15 on which these are mounted, and the substrate body 16. And a case 18 to be accommodated.
  • the sensor module 10 has a power supply circuit (not shown) that realizes battery operation.
  • the light emitting unit 11 includes a light emitting element package 11a, a light emitting element package 11b, and a drive circuit 11c.
  • the light emitting element package 11a includes a light emitting element 11a1 and a light emitting element 11a2 made of a light emitting diode element or a laser element that emits light including near infrared light in one package.
  • the light emitting element package 11b includes a light emitting element 11b1 and a light emitting element 11b2 made of a light emitting diode element or a laser element that emits light including near infrared light in one package.
  • the drive circuit 11c drives the light emitting element 11a1 and the light emitting element 11a2 included in the light emitting element package 11a, and the light emitting element 11b1 and the light emitting element 11b2 included in the light emitting element package 11b.
  • the light emitting element 11a1 and the light emitting element 11b1 as the “light emitting element” make a pair, and each of the light emitting element 11a1 and the light emitting element 11b1 has a central wavelength ⁇ 1 having the same wavelength shorter than 805 nm as the “center wavelength”.
  • a device capable of emitting infrared light is used.
  • the light emitting element 11a2 and the light emitting element 11b2 as “other light emitting elements” form a pair, and each of the light emitting element 11a2 and the light emitting element 11b2 has the same wavelength longer than 805 nm as the “other central wavelength”.
  • the one capable of emitting near-infrared light having a wavelength ⁇ 2 is used.
  • the center wavelength of near-infrared light refers to a wavelength having the highest light intensity (light energy) in the wavelength range of near-infrared light emitted from a light emitting element.
  • the light emitting element 11a1 and the light emitting element 11b1 can emit near infrared light having a center wavelength ⁇ 1 of 760 nm, and the light emitting element 11a2 and the light emitting element 11b2 have a near infrared light having a center wavelength ⁇ 2 of 850 nm. Light can be emitted.
  • the present invention is not limited to this, and the center wavelength ⁇ 1 of near infrared light emitted from the light emitting element 11a1 and the light emitting element 11b1 is shorter than 805 nm and the center of near infrared light emitted from the light emitting element 11a2 and the light emitting element 11b2 is used.
  • the wavelength ⁇ 2 is preferably longer than 805 nm.
  • the center wavelength ⁇ 1 may be 780 nm and the center wavelength ⁇ 2 may be 830 nm.
  • the other light emitting element may emit light other than near infrared rays such as red light, and the center wavelength ⁇ 1 may be 640 nm and the center wavelength ⁇ 2 may be 940 nm.
  • the wavelength range of near infrared light emitted from the light emitting elements 11a1 and 11b1 is preferably 760 ⁇ 50 nm, and the wavelength range of near infrared light emitted from the light emitting elements 11a2 and 11b2 is preferably 850 ⁇ 50 nm.
  • the wavelength range of near infrared light emitted from the light emitting element 11a1 and the light emitting element 11b1 is 760 ⁇ 20 nm
  • the wavelength range of near infrared light emitted from the light emitting element 11a2 and the light emitting element 11b2 is 850 ⁇ 20 nm
  • the light emitting element 11a2 and the light emitting element 11b2 are omitted, and each of the light emitting element 11a1 and the light emitting element 11b1 separately emits both near-infrared light having the center wavelength ⁇ 1 and near-infrared light having the center wavelength ⁇ 2. You may do it.
  • the light emitting element 11b1 and the light emitting element 11b2 may be omitted, and only the light emitting element 11a1 and the light emitting element 11a2 may be configured. Note that “omitted” includes a case where it is physically removed and a case where the function as an element is simply not exhibited (that is, not used).
  • the light receiving unit 12 includes a light receiving element package 12a and an amplifier circuit 12b.
  • the light receiving element package 12a has a light receiving element 12-1 and a light receiving element 12-2 for outputting a signal (light receiving signal) corresponding to the received near infrared light in one package.
  • the amplifier circuit 12b amplifies the light reception signal output from the light receiving element 12-1 and the light receiving element 12-2 of the light receiving element package 12a.
  • the light receiving element 12-1 as the “light receiving element” has a maximum receiving sensitivity at the center wavelength ⁇ 1 of near infrared light emitted from the light emitting elements 11a1 and 11b1, and is sensitive to near infrared light having a wavelength near the center wavelength ⁇ 1.
  • the light receiving element 12-2 as “another light receiving element” has a maximum receiving sensitivity at the center wavelength ⁇ 2 of near-infrared light emitted from the light emitting elements 11a2 and 11b2, and a near-red light having a wavelength near the center wavelength ⁇ 2. Sensitive to outside light.
  • the light receiving element 12-1 has the maximum reception sensitivity at a wavelength of 760 nm, and can receive near infrared light having a wavelength in the range of 760 ⁇ 50 nm.
  • the light receiving element 12-2 has a maximum receiving sensitivity at a wavelength of 850 nm, and can receive near infrared light having a wavelength in the range of 850 ⁇ 50 nm.
  • the light receiving element it is preferable to select a light receiving element that maximizes the reception sensitivity according to the center wavelength emitted by the light emitting element.
  • the light receiving element 12-2 may be omitted, and the light receiving element 12-1 may be sensitive to both near infrared light near the center wavelength ⁇ 1 and near infrared light near the center wavelength ⁇ 2. Good.
  • the light receiving element 12-1 is disposed between the light emitting element 11a1 and the light emitting element 11b1 on an upper surface 15a of the substrate 15 described later so as to receive light emitted from the light emitting element 11a1 and the light emitting element 11b1.
  • the light receiving element 12-2 is disposed between the light emitting element 11a2 and the light emitting element 11b2 on the upper surface 15a of the substrate 15 to be described later so as to receive light emitted from the light emitting element 11a2 and the light emitting element 11b2. Yes.
  • the control unit 13 is composed of a microcomputer.
  • the control unit 13 transmits a timing signal to the drive circuit 11c of the light emitting unit 11 and controls the light emitting element package 11a and the light emitting element package 11b of the light emitting unit 11 to emit near infrared light. Specifically, near-infrared light is emitted simultaneously from the light emitting element 11a1 of the light emitting element package 11a and the light emitting element 11b1 of the light emitting element package 11b, and the light emission is stopped after a predetermined time, and then the light emitting element 11a2 of the light emitting element package 11a.
  • near-infrared light is simultaneously emitted from the light-emitting element 11b2 of the light-emitting element package 11b and light emission is stopped after a predetermined time, and the near-infrared light having the center wavelength ⁇ 1 and the near-infrared light having the center wavelength ⁇ 2 are intermittently and alternately Make it emit light.
  • control unit 13 converts the amplified received light signal output from the amplifier circuit 12b of the light receiving unit 12 into digital signal information (signal output value) that can be processed using the built-in analog-digital conversion circuit. Then, based on the converted signal information, each biological related information of blood hemoglobin change, blood oxygen ratio change and pulse rate is estimated.
  • the control unit 13 functions as a living body related information estimation unit.
  • the wireless communication unit 14 is composed of a wireless communication IC.
  • the biological body related information estimated by the control unit 13 is transmitted to the display device 20 described later by communication using a wireless communication standard such as Bluetooth (registered trademark).
  • the sensor module 10 transmits the signal information used for estimation of the living body related information instead of the living body related information to the display device 20 by wireless communication, and estimates the living body related information based on the signal information in the display device 20. It is good also as a structure.
  • the substrate 15 is a printed circuit board in which a wiring pattern is formed of a copper foil on a glass epoxy substrate.
  • a light emitting element package 11a having a light emitting element 11a1 and a light emitting element 11a2
  • a light receiving element 12-1 A light receiving element package 12a having the light receiving element 12-2 is mounted.
  • the light emitting element 11a1 and the light emitting element 11b1 are disposed with a space therebetween, and the light receiving element 12-1 is disposed at an intermediate position between the light emitting element 11a1 and the light emitting element 11b1, and the light emitting element 11a1 and the light emitting element 11b1.
  • the light receiving elements 12-1 are arranged in a straight line.
  • the distance L1 between the light emitting element 11a1 and the light receiving element 12-1 and the distance L2 between the light emitting element 11b1 and the light receiving element 12-1 are each 4 mm.
  • the distance L1 and the distance L2 are preferably 4 to 11 mm.
  • interval L1 are the same.
  • the light emitting element 11a2, the light emitting element 11b2, and the light receiving element 12-2 are also arranged in the same manner as described above.
  • a drive circuit 11 c of the light emitting unit 11, an amplifier circuit 12 b of the light receiving unit 12, a microcomputer configuring the control unit 13, and a wireless communication IC configuring the wireless communication unit 14 are mounted on the lower surface (not shown) of the substrate 15.
  • a drive circuit 11 c of the light emitting unit 11, an amplifier circuit 12 b of the light receiving unit 12, a microcomputer configuring the control unit 13, and a wireless communication IC configuring the wireless communication unit 14 are mounted on the lower surface (not shown) of the substrate 15.
  • the case 18 is formed in a hollow box shape, and the upper wall 18a of the case 18 has translucency, and portions other than the upper wall 18a are made of a light-shielding material. Yes.
  • the case 18 accommodates the substrate body 16 so that the upper surface 15a of the substrate 15 faces the upper wall 18a.
  • the case 18 is attached to the subject such that the upper wall 18a is in contact with the surface of the subject (human skin).
  • the light emitting element 11a1 and the light emitting element 11a2 of the light emitting element package 11a, the light emitting element 11b1 and the light emitting element 11b2 of the light emitting element package 11b, and the light receiving element 12-1 and the light receiving element 12-2 of the light receiving element package 12a are Positioned to face the surface of the subject via 18a.
  • the display device 20 is a tablet terminal, and can execute various types of applications such as an application program (hereinafter simply referred to as “app”) installed in advance or an application downloaded from the Internet. By executing the corresponding application, it functions as various devices.
  • the display device 20 functions as a device constituting a part of the living body related information display system 1 by executing an application for displaying the living body related information on the display device 20.
  • the display device 20 includes a display unit 21 formed of a liquid crystal display, a touch panel 22 overlaid on the surface of the liquid crystal display, a control unit 23 having a microcomputer, a working memory, and an information storage memory. And a wireless communication unit 25 including a wireless communication module.
  • the display unit 21 displays various screens such as documents and images according to the display control information output from the control unit 23, and displays operation items such as buttons, text input areas, a keyboard, and numeric keys in the various screens. .
  • a contact operation is input by a user at a location corresponding to the operation item.
  • the touch panel 22 outputs a signal corresponding to the input contact operation to the control unit 23.
  • the control unit 23 receives, for example, information related to the touch operation input by the user with respect to the touch panel 22, and display control information for displaying a predetermined image on the display unit 21 based on the input information. Is output.
  • the control unit 23 exchanges various information with the storage unit 24, reads predetermined information from the storage unit 24, and stores the predetermined information in the storage unit 24.
  • the wireless communication unit 25 receives the biological related information transmitted from the sensor module 10, and the control unit 23 captures the biological related information received by the wireless communication unit 25.
  • the display device 20 executes a bio-related information display application program (hereinafter simply referred to as “bio-app”) as a bio-related information display program that displays bio-related information transmitted from the sensor module 10. be able to.
  • bio-app a bio-related information display application program
  • the sensor module 10 starts a living body related information estimation operation when a power switch (not shown) is operated and the power is turned on.
  • the sensor module 10 emits near-infrared light from the light-emitting unit 11 and receives near-infrared light that has passed through the subject at the light-receiving unit 12 and performs blood-related information estimation operation in the blood based on the received near-infrared light.
  • Each biological related information of hemoglobin change, blood oxygen ratio change and pulse rate is estimated, and the biological related information is sequentially transmitted to the display device 20 by wireless communication.
  • the display device 20 executes the biometric application by the control unit 23 and displays the biometric information transmitted from the sensor module 10 on the display unit 21.
  • the biological information is estimated as follows.
  • the drive circuit 11c emits near-infrared light having a center wavelength ⁇ 1 of 760 nm and light-emitting elements 11a1 and 11b1 that emit near-infrared light having a center wavelength ⁇ 1 of 760 nm.
  • the element 11a2 and the light emitting element 11b2 are caused to alternately emit light toward the subject at a predetermined timing. Then, the weak reflected light reflected by the subject is received by the light receiving element 12-1 and the light receiving element 12-2, respectively.
  • the light receiving element 12-1 and the light receiving element 12-2 output a signal corresponding to the received reflected light, and the signal is amplified by the amplifier circuit 12b and input to the control unit 13.
  • the control unit 13 performs analog-to-digital conversion on the input signal to obtain a signal output for each wavelength (760 nm and 850 nm).
  • the control unit 13 stores in advance a calculation formula and a table indicating the relationship between the signal output value and the value of the biological related information in a memory or the like. Information is obtained.
  • the light emitting element 11a2, the light emitting element 11b2, and the light receiving element 12-2 are omitted, and one of the paired light emitting elements 11a1 and 11b1 is omitted.
  • the relationship between the distance between the light emitting element 11a1 and the light receiving element 12-1 and the detection sensitivity in the depth direction was measured. The measurement results are shown in FIGS.
  • FIG. 5 to FIG. 8 are graphs showing the relationship between the relative distance to the reaction member and the detection sensitivity when the distance between the light emitting element 11a1 and the light receiving element 12-1 is 2.5 mm, 4 mm, 7 mm, and 10 mm. .
  • FIG. 5 shows that the distance between the light emitting element 11a1 and the light receiving element 12-1 is 2.5 mm, the driving current is 0.4 mA, the light emitting element 11a1 emits light toward the pseudo subject at a predetermined timing, and the artery is simulated.
  • the signal output from the light receiving element 12-1 was measured while shifting the surface of the pseudo subject in which the member (hereinafter referred to as "reaction member") was embedded in the direction of arrangement of the light emitting element 11a1 and the light receiving element 12-1.
  • the light emitting element 11a1 one that emits two types of near infrared light separately and alternately, near infrared light having a center wavelength ⁇ 1 of 760 nm and near infrared light having a center wavelength ⁇ 2 of 850 nm was used.
  • the light receiving element 12-1 one having sensitivity to both near-infrared light near the center wavelength ⁇ 1 and near-infrared light near the center wavelength ⁇ 2 was used.
  • a pseudo subject was prepared in which a reaction member was embedded at a depth of 2 mm, 4 mm, and 6 mm from the surface. In FIG.
  • the horizontal axis represents the relative planar distance [mm] between the reaction member and the light receiving element
  • the vertical axis represents the signal output value (arbitrary unit) obtained by analog-digital conversion of the signal output from the amplifier circuit 12b. ).
  • This signal output value is normalized by the drive current of the light emitting element. The larger the signal output value, the higher the detection sensitivity.
  • the graphs indicated by diamonds ( ⁇ ), squares ( ⁇ ), and triangles ( ⁇ ) indicate the measurement results when the reactant depths are 2 mm, 4 mm, and 6 mm, respectively.
  • the interval between the light emitting element 11a1 and the light receiving element 12-1 is increased in order from 2.5 mm to 10 mm.
  • the distance between the light emitting element 11a1 and the light receiving element 12-1 is 7 mm, a relatively high detection sensitivity is obtained, and it is apparent that the detection sensitivity decreases when the distance is made smaller or larger. became.
  • FIG. 9 is a graph showing the relationship between the relative distance to the reaction member and the detection sensitivity in a configuration including two light emitting elements and a configuration including only one light emitting element.
  • the light emitting element 11a2, the light emitting element 11b2, and the light receiving element 12-2 are omitted, and two light emitting elements 11a1 and 11b1 forming a pair arranged with the light receiving element 12-1 interposed therebetween are provided.
  • the provided configuration was fabricated as Configuration A.
  • this configuration A one light emitting element 11b1 was omitted and one light emitting element 11a1 and one light receiving element 12-1 were provided as a configuration B.
  • the light emitting element 11a1 is caused to emit light toward the pseudo subject at a predetermined timing (in the configuration A, the light emitting element 11b1 is also allowed to emit light simultaneously), and the pseudo member in which the reaction member is embedded is used.
  • a signal output from the light receiving element 12-1 was measured while shifting the surface of the subject in the arrangement direction of the light emitting element 11a1 and the light receiving element 12-1.
  • the distance between the light emitting element 11a1 and the light receiving element 12-1 is 4 mm.
  • the distance between the light emitting element 11b1 and the light receiving element 12-1 is also 4 mm.
  • the light-emitting element 11a1 and the light-emitting element 11b1 emit two types of near-infrared light, that is, near-infrared light having a center wavelength ⁇ 1 of 760 nm and near-infrared light having a center wavelength ⁇ 2 of 850 nm. .
  • FIG. 9 is a graph plotting the measured values.
  • the horizontal axis represents the relative planar distance [mm] between the reaction member and the light receiving element
  • the vertical axis represents the signal output value (arbitrary unit) obtained by analog-to-digital conversion of the signal output from the amplifier circuit 12b. ).
  • This signal output value is normalized by the drive current of the light emitting element. The larger the signal output value, the higher the detection sensitivity.
  • the solid line indicates the configuration A
  • the broken line indicates the configuration B.
  • the detection sensitivity is maximized when the reaction member exists at an intermediate position between the light emitting element 11a1 and the light receiving element 12-1 (position where the relative planar distance is ⁇ 2 mm). If deviating from this intermediate position, the detection sensitivity decreases.
  • the detection sensitivity is substantially constant and the detection sensitivity is higher than that in the configuration B in the range where the relative planar distance to the reaction member is ⁇ 2 mm to 4 mm.
  • the configuration A in which two light emitting elements are provided can obtain higher detection sensitivity in a wider range in the plane direction than the configuration B in which only one light emitting element is provided. Further, it can be seen that by obtaining high detection sensitivity, biological information can be obtained even when the artery of the subject is in a deeper place.
  • a test portion such as an artery in a wide range in the surface direction and depth direction of the subject.
  • a test portion such as an artery in a wide range in the surface direction and depth direction of the subject.
  • it is particularly large when measuring a test part that is in a relatively deep location such as the radial artery on the wrist and has a large individual difference in position. An effect is obtained.
  • the graph of the above configuration A is equivalent to a combination of graphs of detection sensitivity measured individually for each of the two light emitting elements. From this, it is possible to predict the detection sensitivity of the configuration in which two light emitting elements are provided by measuring the detection sensitivity in the configuration in which only one light emitting element is provided.
  • the living body related information is acquired even when the blood vessel is attached to a site having a blood vessel at a relatively deep position. can do.
  • the sensor module 10 has the light emitting element 11a1, the light emitting element 11b1, and the light receiving element 12-1, and the light emitting element 11a2, the light emitting element 11b2, and the light receiving element 12-2. It is not limited to.
  • the light emitting element 11a2, the light emitting element 11b2, and the light receiving element 12-2 shown in FIG. 4 may be omitted, and only the light emitting element 11a1, the light emitting element 11b1, and the light receiving element 12-1 may be provided.
  • the light emitting element 11b1 and the light emitting element 11b2 may be omitted, and only the light emitting element 11a1, the light emitting element 11a2, the light receiving element 12-1, and the light receiving element 12-2 may be provided.
  • each light emitting element may emit only near-infrared light having the same center wavelength ⁇ 1, or both near-infrared light having the center wavelength ⁇ 1 and near-infrared light having the center wavelength ⁇ 2 may be separately provided. It may be emitted.
  • the light emitting element 11a1 and the light emitting element 11a2 are vertically moved so that the distance between the light emitting element 11a1 and the light receiving element 12-1 and the distance between the light emitting element 11a2 and the light receiving element 12-2 are the same.
  • the light emitting element 11a1 and the light emitting element 11a2 may be arranged in a straight line in the left-right direction of FIG. 4, and the same applies to the light emitting element 11b1 and the light emitting element 11b2. May be arranged on a straight line.
  • the wavelength at which the light receiving sensitivity of the light receiving element is maximized is configured to match the center wavelength of near infrared light emitted from the light emitting element corresponding to the light receiving element. As long as infrared light can be detected, the wavelength at which the light receiving sensitivity of the light receiving element is maximized may be slightly shifted from the center wavelength of the light emitting element. Moreover, it is good also as a structure which receives multiple types of near-infrared light from which a center wavelength differs with one light receiving element. Furthermore, it is good also as a structure which emits the multiple types of near-infrared light from which a center wavelength differs with one light emitting element.
  • DESCRIPTION OF SYMBOLS 1 Living body related information display system, 10 ... Sensor module, 11 ... Light emission part, 11a, 11b ... Light emitting element package, 11a1, 11a2, 11b1, 11b2 ... Light emitting element, 11c ... Drive circuit, 12 ... Light receiving part, 12a ... Light reception Element package, 12-1, 12-2 ... light receiving element, 12b ... amplifier circuit, 13 ... control unit, 14 ... wireless communication unit, 15 ... substrate, 15a ... upper surface (of substrate), 16 ... substrate body, 18 ... case 18a ... upper wall (of case), 20 ... display device, 21 ... display unit, 22 ... touch panel, 23 ... control unit, 24 ... storage unit, 25 ... wireless communication unit.

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  • Life Sciences & Earth Sciences (AREA)
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  • Heart & Thoracic Surgery (AREA)
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  • Public Health (AREA)
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  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

L'invention concerne un module de capteur qui peut obtenir des informations biologiques, même lorsqu'il est porté sur un site au niveau duquel un vaisseau sanguin est présent à un emplacement relativement profond. Le module de capteur (10) comprend : une unité électroluminescente (11) qui comprend une paire d'un élément électroluminescent (11a1) et d'un élément électroluminescent (11b1) ; et une unité de réception de lumière (12) qui comprend un élément de réception de lumière (12-1) sensible à la lumière infrarouge proche. En outre, l'élément électroluminescent (11a1) et l'élément électroluminescent (11b1) sont chacun séparés de 4 à 11 mm de l'élément de réception de lumière (12-1) et sont placés de façon à recevoir la lumière émise par ledit élément électroluminescent (11a1) et ledit élément électroluminescent (11b1), et l'élément électroluminescent (11a1) et l'élément électroluminescent (11b1) émettent une lumière infrarouge proche avec une longueur d'onde centrale λ1 inférieure à 805 nm.
PCT/JP2016/069209 2015-07-30 2016-06-29 Module de capteur et système d'affichage d'informations biologiques WO2017018116A1 (fr)

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JPH10337282A (ja) * 1997-02-06 1998-12-22 Nippon Colin Co Ltd 反射型酸素飽和度測定装置
JP2009254794A (ja) * 2008-03-27 2009-11-05 Fujifilm Corp 撮像装置、撮像方法、およびプログラム
JP2014226416A (ja) * 2013-05-24 2014-12-08 パナソニック株式会社 酸素濃度測定装置

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JPH10337282A (ja) * 1997-02-06 1998-12-22 Nippon Colin Co Ltd 反射型酸素飽和度測定装置
JP2009254794A (ja) * 2008-03-27 2009-11-05 Fujifilm Corp 撮像装置、撮像方法、およびプログラム
JP2014226416A (ja) * 2013-05-24 2014-12-08 パナソニック株式会社 酸素濃度測定装置

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