WO2018070514A1 - 咀嚼計およびシステム - Google Patents

咀嚼計およびシステム Download PDF

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Publication number
WO2018070514A1
WO2018070514A1 PCT/JP2017/037163 JP2017037163W WO2018070514A1 WO 2018070514 A1 WO2018070514 A1 WO 2018070514A1 JP 2017037163 W JP2017037163 W JP 2017037163W WO 2018070514 A1 WO2018070514 A1 WO 2018070514A1
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WO
WIPO (PCT)
Prior art keywords
mastication
pressure
sensor
rod
subject
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/037163
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English (en)
French (fr)
Japanese (ja)
Inventor
小林　達矢
田中　伸哉
美佳 江副
基文 中西
隼 山岸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lotte Co Ltd
Omron Healthcare Co Ltd
Original Assignee
Lotte Co Ltd
Omron Healthcare Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lotte Co Ltd, Omron Healthcare Co Ltd filed Critical Lotte Co Ltd
Publication of WO2018070514A1 publication Critical patent/WO2018070514A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A61B5/103—Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb

Definitions

  • the present invention relates to a mastication meter, and more particularly to a mastication meter that measures the number of mastications of a subject.
  • the present invention also relates to a system including such a mastication meter.
  • an earphone type ear canal sensor having a set of a light emitting element and a light receiving element is provided as in a chewing detection device disclosed in, for example, Japanese Patent Application Laid-Open No. 2016-77690. It is known that a light receiving element receives reflected light of light emitted from the light emitting element into the ear canal and outputs a voltage signal corresponding to the amount of light received.
  • a holding portion formed in a U shape so as to be hooked on an ear and surround a jaw, and a U shape
  • a switch provided with a switch (electric element) that is provided at the bottom part of the body and outputs an electric signal when it hits the jaw.
  • Patent Document 3 Japanese Patent Laid-Open No. 2016-93255
  • a sensor unit that is attached to the left and right vines of the glasses-type wearing device is provided, and the motion sensor built in the sensor unit
  • a device that compares the output of a sound sensor (for example, picking up bone conduction sound) with a threshold value of a determination rule based on a mastication motion model is known.
  • a clip (a mounting portion) that is hooked on an ear, and a distance measuring sensor housed in the clip (Variation detection unit) and an acceleration sensor (posture detection unit, human body motion detection unit), a variation in the distance between the distance measurement sensor and the jaw detected by the distance measurement sensor, and an acceleration signal ( It is known to measure the number of chewing times based on (posture).
  • the distance measuring sensor emits light from the light emitting unit, detects reflected light reflected by the jaw by the light receiving unit, and outputs an electric signal corresponding to the intensity of the detected reflected light.
  • Patent Document 5 Japanese Patent Application Laid-Open No. 2006-129985
  • a band-like object disposed facing the scalp of a portion of the temporal muscle of the head
  • a sealing tube inserted between the band-like object and the scalp, and a semiconductor pressure sensor that communicates with the sealing tube via a small-diameter tube and detects the atmospheric pressure in the sealing tube, and is associated with a tightening operation
  • What detects the bulging of temporal muscle as a pressure fluctuation by the said semiconductor pressure sensor is known.
  • the same document also discloses an example in which a small strain gauge attached to the string on the side of the spectacle frame is detected, and the bulging of the temporal muscle accompanying the biting operation is detected by the strain gauge as a change in electrical resistance value. ing.
  • Patent Documents 1 and 2 have a problem that the physical burden on the subject is large to maintain the wearing state because they are attached to the ear canal and chin of the subject, respectively.
  • the thing of patent document 3 processes two types of different types of signals of motion and sound, there is a problem that the processing algorithm becomes complicated.
  • the one described in Patent Document 4 has a problem that the processing algorithm becomes complicated because two kinds of different signals, that is, a distance and an acceleration signal (attitude) are processed. Further, when the subject shakes his / her head, for example, the distance measuring sensor is displaced relative to the chin and noise is generated, resulting in a problem that the counting accuracy is lowered.
  • an object of the present invention is to provide a mastication meter that is configured at low cost with little physical burden on the subject to maintain the wearing state, and that can accurately measure the number of mastications with simple signal processing. .
  • an object of the present invention is to provide a system including such a mastication meter.
  • the mastication meter of the present invention is: A mastication meter that is attached to a rod-like object to be attached to the subject's temporal region and measures the number of mastications based on the movement of temporal muscles associated with mastication,
  • the rod-shaped object is configured as a separate body, and when using the masticator, a pressure-sensitive sensor module attached to a portion of the rod-shaped object facing the scalp that covers the temporal muscle, and of the rod-shaped object A body attached to a part different from the part to which the pressure-sensitive sensor module is attached,
  • the pressure sensor module A sheet-like pressure sensor that receives a pressure from the temporal muscle and outputs a change in pressure according to the movement of the temporal muscle as a change in electrical resistance;
  • a sensor holder for detachably attaching the pressure sensor along the rod-shaped object The main body Equipped with a signal processing unit that counts the number of mastications based on the output of the pressure sensor,
  • bar-shaped object refers to a bar-shaped object such as a temple of a spectacle frame and a portion near the end of a headband (a type of hair band).
  • the “bar-shaped object” may be a part of an object having a complex structure (for example, the spectacle frame listed above), and may be curved or bent.
  • the pressure-sensitive sensor module and the main body are configured separately from the rod-shaped object to be attached to the subject's temporal region.
  • the pressure-sensitive sensor module is attached to a portion of the rod-shaped object facing the scalp covering the temporal muscle.
  • the sheet-like pressure sensor constituting the pressure-sensitive sensor module is detachably attached along the rod-like object via a sensor holder.
  • the main body is detachably attached via an attachment member along a portion of the rod-like object that is different from the portion to which the pressure-sensitive sensor module is attached.
  • the rod-shaped object is easily attached to the subject's temporal region in a state where the pressure-sensitive sensor module and the main body are attached to the rod-shaped object. Since this masticator is attached to the subject's temporal region together with the rod-shaped object, the physical burden on the subject is less to maintain the attachment state than when attached to the ear canal or jaw of the subject, for example. .
  • the sheet-like pressure sensor receives a pressure from the temporal muscle and outputs a change in pressure according to the movement of the temporal muscle as a change in electrical resistance.
  • a signal processing unit mounted on the main body counts the number of mastications based on the output of the pressure sensor.
  • the temporal muscle repeats uplift and flattening.
  • movement the output of the said pressure sensor changes large and small repeatedly. Therefore, when the signal processing unit detects the change in the output of the pressure-sensitive sensor, it can be chewed with simple signal processing as compared with the case where two kinds of different signals such as movement and sound are processed.
  • the sheet-like pressure sensor is mounted in a state of being sandwiched between the rod-shaped object and the subject's temporal region, even if the subject shakes his / her head, for example, Relative displacement can be suppressed. Therefore, for example, the number of mastications can be measured with higher accuracy than when a sensor is provided on a clip that is hooked on the ear.
  • the sheet-like pressure sensor is configured at a low cost as compared with, for example, a case where a sealed tube and a semiconductor pressure sensor are used. Therefore, the masticator can be constructed relatively inexpensively as a whole.
  • the sensor holder is A plate portion arranged along the surface of the rod-like object facing the scalp; A pair of arm portions extending from the side edges on both sides along the longitudinal direction of the rod-shaped object to the side where the rod-shaped material exists perpendicularly to the plate portion among the plate portions; The plate portion and the pair of arm portions surround and hold the rod-shaped object,
  • the sheet-like pressure-sensitive sensor is attached along a facing surface on the side facing the scalp in the plate portion.
  • the sensor holder is a side of the plate portion on which the rod-like object exists perpendicularly to the plate portion from side edges on both sides along the longitudinal direction of the rod-like object.
  • a pair of arms extending to the side.
  • the test subject positions the mounting position of the pressure-sensitive sensor module on the rod-shaped object along the longitudinal direction of the rod-shaped object so that the pressure-sensitive sensor module faces the temporal muscle of the temporal region of the subject. Variable and easy to adjust.
  • the plate portion of the sensor holder has an elongated shape along the longitudinal direction of the rod-shaped object,
  • the pair of arm portions is characterized in that each of the side edges on both sides of the plate portion extends from ends opposite to each other in the longitudinal direction to the side where the rod-like object is present.
  • the pair of arm portions are respectively the upper surfaces of the rod-like object, It can contact the lower surface. Moreover, even if the cross-sectional size of the rod-like object is somewhat larger or smaller, the pair of arm portions can contact the upper surface and the lower surface of the rod-like object, respectively. Therefore, the pressure-sensitive sensor module can be easily attached to various rod-shaped objects.
  • the plate portion of the sensor holder has an elongated shape along the longitudinal direction of the rod-shaped object, A plurality of the protrusions are provided apart from each other in the longitudinal direction of the plate part,
  • the sheet-like pressure-sensitive sensor is characterized by being divided into sensor portions corresponding to the protrusions through slits in the longitudinal direction of the plate portion.
  • the sheet-like pressure-sensitive sensor has a pair of conductive layer patterns arranged in parallel and spirally apart from each other in a sensor portion corresponding to the protrusion. Therefore, the hardness of the sheet-shaped pressure sensor in the sheet surface is reduced as compared with the case where the conductive layer simply spreads in a plane. Thereby, the circular area
  • the mastication meter is characterized by including a sensor cover that integrally covers the rod-shaped object and the pressure-sensitive sensor module attached to the rod-shaped object in a cylindrical shape.
  • the masticator according to this embodiment includes a sensor cover that integrally covers the rod-shaped object and the pressure-sensitive sensor module attached to the rod-shaped object in a cylindrical shape. Therefore, the sensor cover can securely attach the pressure-sensitive sensor module to the rod-like object. Further, the sensor cover protects the sheet-like pressure sensitive sensor and improves reliability.
  • the pressure-sensitive pressure covered by the sensor cover between the scalp covering the subject's temporal muscle and the auricle. A sensor module is sandwiched between the sensor cover and the scalp covering the temporal muscle of the subject. Therefore, compared with the case where the said sheet-like pressure sensitive sensor is exposed, a test subject's wearing feeling becomes good.
  • the signal processing unit sets a threshold for the output of the pressure-sensitive sensor, and determines the number of mastications according to the number of times the output of the pressure-sensitive sensor exceeds or falls below the threshold. It is characterized by counting.
  • the signal processing unit sets a threshold for the output of the pressure sensor, and the number of mastications according to the number of times the output of the pressure sensor exceeds or falls below the threshold. Count. Therefore, signal processing is easily performed.
  • the main body is masticated by the subject according to the signal processing unit counting the number of mastications on a portion of the outer peripheral surface of the main body that enters the visual field of the subject. It has the indicator which displays the information regarding operation
  • the main body has a display unit on a part of the outer peripheral surface of the main body that enters the visual field of the subject.
  • the display displays information related to the mastication operation of the subject in response to the signal processing unit counting the number of mastications.
  • the subject can recognize information related to his / her chewing action, for example, that his / her chewing action is correctly performed.
  • the main body includes a communication unit capable of transmitting information on the mastication operation of the subject to the outside of the main body.
  • information related to the mastication operation of the subject can be transmitted to the outside of the main body by the communication unit.
  • the information on the subject's mastication operation can be used for various purposes.
  • the “computer device” may be substantially a computer device such as a smartphone or a tablet terminal regardless of the name.
  • the “image related to mastication” refers to, for example, a bar graph obtained by counting the number of mastication operations of the subject on a daily basis.
  • the communication unit of the computer device receives information on the subject's mastication operation from the mastication meter.
  • the display processing unit processes information related to the masticatory action of the subject from the masticator and creates an image relating to the masticatory action of the subject.
  • the display of the computer device displays the image created by the display processing unit. A user (who may be a person other than the subject) who has seen this image can intuitively recognize the information related to the mastication operation of the subject through vision.
  • the mastication device of the present invention has a low physical burden on the subject to maintain the wearing state, is constructed at low cost, and can accurately measure the number of mastications with simple signal processing.
  • the user can intuitively recognize information related to the mastication operation of the subject through vision.
  • FIG. 1 It is a perspective view which shows the state in which the mastication meter of one Embodiment of this invention was attached to the temple of the spectacles frame. It is a perspective view which shows the mounting state with which the test subject was mounted
  • FIG. 8E are views showing the sensor holder as viewed from above, left side, and right side in FIG. 8B, respectively.
  • FIG. 8C is a cross-sectional view taken along the line CC in FIG. 8B.
  • It is a perspective view which shows the pressure sensor which comprises the said pressure sensor module in a disassembled state. It is a figure which shows the plane layout of the conductive layer pattern which the said pressure sensor has. It is a figure which shows the load versus resistance value characteristic of the said pressure sensor. It is a figure which shows the time change of the output by the two sensor parts contained in the said pressure sensor. It is a figure which shows the block structure of the control system of the said mastication meter.
  • FIG. 1 shows a state in which a mastication meter (indicated by reference numeral 90) according to an embodiment of the present invention is detachably attached to a left temple 204 of a spectacle frame 201.
  • the left temple 204 of the spectacle frame 201 is a part of the spectacles 200 as an object having a complex structure, and is an example of a rod-shaped object.
  • the glasses 200 have a general structure, and include a front frame 202 and a pair of right and left temples 203 and 204.
  • the left temple 204 includes a straight portion 205 extending rearward from the front frame 202 and a modern portion 206 that continues to the rear of the straight portion 205 and is curved or bent so as to be hooked on the ear of the subject.
  • FIG. 3 shows the body 1 of the mastication meter 90 attached to the straight portion 205 of the left temple 204 as viewed from the inside of the spectacle frame 201 (the side entering the visual field of the subject).
  • 4 shows the pressure sensor module 2 of the mastication meter 90 attached to the modern portion 206 of the left temple 204 as viewed from the same side as FIG.
  • the main body 1 has a display 140 ⁇ / b> A and an operation unit 130 in a portion corresponding to the outside of the spectacle frame 201 on the outer peripheral surface of the casing 1 ⁇ / b> M. Further, as can be seen from FIG. 3, the display 140 ⁇ / b> B and the attachment member 5 are provided in a portion corresponding to the inside of the spectacle frame 201 on the outer peripheral surface of the casing 1 ⁇ / b> M.
  • the display 140A in FIG. 1 is an OLED (organic light emitting diode) in this example, and is used to display the number of chewing times.
  • the operation unit 130 includes a push switch in this example, and is used by the subject to instruct the operation start (start measurement and / or display start).
  • the indicator 140B in FIG. 3 is composed of one LED (light emitting diode) in this example, and is temporarily lit every time the mastication operation is performed to indicate that the subject is correctly performing the mastication operation.
  • the attachment member 5 is composed of a planar fastener fixed to a portion corresponding to the inside of the outer peripheral surface of the casing 1M. The attachment member 5 is folded back so as to cover the left temple 204 to be a semi-cylindrical shape, and is used for detachably attaching the main body 1 along the straight portion 205 of the left temple 204.
  • the sensor cover 4 allows the pressure sensitive sensor module 2 to be securely attached to the modern part 206. In addition, the sensor cover 4 protects the sheet-like pressure sensor 50 and improves reliability.
  • the sensor cover 4 is made of a flexible cloth that can be easily expanded and contracted, and therefore hardly affects the output of the sheet-like pressure sensor 50.
  • FIG. 7 shows the structure of the sensor holder 3 in detail.
  • FIG. 8B shows the sensor holder 3 as viewed from a direction perpendicular to the plate portion.
  • FIG. 8A, FIG. 8D, and FIG. 8E show the sensor holder 3 as viewed from above, the left side, and the right side in FIG. 8B, respectively.
  • FIG. 8C shows a cross section taken along line CC in FIG. 8B.
  • the plate portion 3 a of the sensor holder 3 has an elongated, substantially rectangular flat plate shape along the longitudinal direction X of the left temple 204.
  • the pair of arm portions 3b, 3c are arranged on the right back side in FIG. 7 from the side edges 3e1, 3e2 on both sides along the longitudinal direction X of the left temple 204 in the plate portion 3a (see FIG. 7). 6 on the side where the left temple 204 exists). More specifically, the pair of arm portions 3b, 3c extend from the opposite end portions 3f1, 3f2 of the side edges 3e1, 3e2 on both sides of the plate portion 3a to the right rear side in FIG. is doing.
  • the plate portion 3a of the sensor holder 3 is disposed along the surface 204a on the side facing the scalp of the left temple 204 as shown in FIGS.
  • the portion 3 a and the pair of arm portions 3 b and 3 c are in a state of surrounding and holding the left temple 204.
  • a sheet-like pressure sensor 50 is attached along the facing surface 3a1 on the side facing the scalp of the plate portion 3a of the sensor holder 3.
  • the sheet-like pressure sensor 50 is arranged along the surface 204 a on the side facing the scalp of the left temple 204 via the sensor holder 3.
  • the plate portion 3a of the sensor holder 3 has a direction perpendicular to the plate portion 3a on the facing surface 3a1 on the side facing the scalp.
  • the sheet-like pressure sensor 50 is pasted so as to cover the facing surface 3a1 including these protrusions 3p1 and 3p2.
  • the dimension of the plate portion 3a in the longitudinal direction X is set to 28 mm, and the dimension in the width direction perpendicular thereto is set to 8 mm.
  • the dimension in which the arm portions 3b and 3c extend perpendicular to the plate portion 3a is set to 4.6 mm.
  • the dimension (height) at which the protrusions 3p1 and 3p2 protrude from the opposing surface 3a1 is 0.7 mm, the diameter of the protrusions 3p1 and 3p2 is 4 mm, and the distance between the centers of the protrusions 3p1 and 3p2 is 8.5 mm. Yes.
  • FIG. 9 shows the sheet-like pressure sensor 50 in an exploded state.
  • the pressure-sensitive sensor 50 includes an electrically insulating flexible substrate 51, a pair of spiral layers 50P-1 and 50P-2 formed on the flexible substrate 51, and a pair of spiral layers 50P-1 and 50P-2.
  • Ring-shaped spacer layers 50Q-1 and 50Q-2 each having a thickness of 30 ⁇ m and circular conductive layers 50R-1 and 50R-2 respectively corresponding to the pair of spiral layers 50P-1 and 50P-2.
  • And is laminated in the thickness direction.
  • the centers of the spiral layers 50P-1 and 50P-2 correspond to the centers of the protrusions 3p1 and 3p2, respectively.
  • the spiral layer 50P-1 has a pair of conductive layer patterns E0-1 and E1-1 that are spaced apart from each other and arranged in parallel and spirally.
  • the spiral layer 50P-2 has a pair of conductive layer patterns E0-2 and E1-2 arranged in parallel and spirally apart from each other.
  • One conductive layer pattern E0-1 of the spiral layer 50P-1 and one conductive layer pattern E0-2 of the spiral layer 50P-2 are along the edge of one side (lower side in FIG. 10) of the flexible substrate 51. It is electrically connected to an electrode terminal 55e provided at the end on the ⁇ X side through a common wiring pattern 55 extending in the longitudinal direction X.
  • the other conductive layer pattern E1-1 of the spiral layer 50P-1 is -X via a wiring pattern 57 extending in the longitudinal direction X along the opposite edge (upper side in FIG. 10) of the flexible substrate 51. It is electrically connected to an electrode terminal 57e provided at the end on the side.
  • the other conductive layer pattern E1-2 of the spiral layer 50P-2 is provided at the end on the ⁇ X side via a wiring pattern 56 extending in the longitudinal direction X along the wiring patterns 55 and 57 on both sides.
  • the electrode terminal 56e is electrically connected.
  • a rectangular slit 51s penetrating the flexible substrate 51 in the thickness direction is formed in a gap corresponding to the longitudinal direction X between the pair of spiral layers 50P-1 and 50P-2.
  • the sheet-like pressure sensor 50 is applied to the sensor portions 50-1 and 50-2 corresponding to the protrusions 3p1 and 3p2 through the slit 51s in the longitudinal direction X of the plate portion 3a. It is divided.
  • the dimension in the longitudinal direction X of the flexible substrate 51 is set to 20 mm, and the dimension in the width direction perpendicular thereto is set to 7.5 mm.
  • the dimension of the slit 51s in the X direction is set to 1.5 mm, and the dimension in the direction perpendicular thereto is set to 4.5 mm.
  • the sensor portions 50-1 and 50-2 corresponding to the protrusions 3p1 and 3p2 respectively have resistance values. Changes significantly. Specifically, the sensor portions 50-1 and 50-2 corresponding to the protrusions 3p1 and 3p2 of the sheet-like pressure sensor 50 are more strongly compressed. Thereby, the resistance value (output) of the pressure-sensitive sensor 50 changes greatly according to the test subject's chewing action. That is, the sensitivity is improved.
  • the sheet-like pressure sensor 50 has a pair of conductive layer patterns E0-1 and E1-1 disposed in parallel and spirally spaced apart from each other, for example, on the sensor portion 50-1 corresponding to the protrusion 3p1.
  • the hardness of the sheet-like pressure-sensitive sensor 50 in the sheet surface is reduced as compared with the case where the conductive layer simply spreads in a plane.
  • the circular region pushed by the dome-shaped protrusion 3p1 easily spreads radially outward from the center of the spiral layer 50P-1.
  • the length of the portion of the pair of conductive layer patterns E0-1 and E1-1 that contributes to the resistance change greatly extends along the direction of the spiral. Therefore, the resistance value (output) of the sensor portion 50-1 corresponding to the protrusion 3p1 changes greatly.
  • the sensitivity is further improved.
  • the two sensor portions 50-1 and 50-2 of the sheet-like pressure-sensitive sensor 50 each exhibit a change in resistance value as illustrated in FIG.
  • the resistance values of the two sensor portions 50-1 and 50-2 of the sheet-like pressure sensor 50 are 30 ⁇ , It changes to 12.5 ⁇ , 6.6 ⁇ , 2 ⁇ , 1.25 ⁇ .
  • the sheet-like pressure sensor 50 can reliably output a change in pressure according to the movement of the temporal muscle 99 as a change in electrical resistance by either one of the two sensor portions 50-1 and 50-2.
  • the two sensor portions 50-1 and 50-2 of the sheet-like pressure sensor 50 are separated through the slit 51s, the two sensor portions 50-1 and 50-2 are electrically connected to each other. There is no interference and noise is reduced. Therefore, the SN ratio (signal-to-noise ratio) of the output of the sheet-like pressure sensor 50 is improved.
  • the above-described sheet-shaped pressure sensor 50 is configured at a lower cost than, for example, when a sealed tube and a semiconductor pressure sensor are used. Therefore, the mastication meter 90 can be configured relatively inexpensively as a whole.
  • FIG. 13 shows a block configuration of a control system of the mastication meter 90.
  • the mastication meter 90 includes a control unit 110, a storage unit 115, a communication unit 180, a power source, a main unit 1, in addition to the operation unit 130 and the display unit 140 (representing the display units 140A and 140B).
  • the unit 170 is mounted.
  • the control unit 110 includes a CPU (central processing unit) that is operated by software, and operates as a signal processing unit to perform a process of counting the number of mastications based on the output of the pressure-sensitive sensor 50 and other various processes.
  • a CPU central processing unit
  • the storage unit 115 includes an EEPROM (electrically rewritable nonvolatile memory) that can store data non-temporarily.
  • the storage unit 115 stores a control program for controlling the control unit 110.
  • the storage unit 115 stores the number of mastications counted by the control unit 110.
  • the communication unit 180 is controlled by the control unit 110 to transmit predetermined information to an external device via the network, or receives information from the external device via the network and passes it to the control unit 110.
  • communication via this network is wireless communication (for example, BLE (Bluetooth (registered trademark) low energy) communication).
  • the network is typically a home LAN (Local Area Network) or a hospital LAN, but is not limited thereto, and may be the Internet.
  • the power supply unit 170 includes a rechargeable battery (secondary battery) and a charging terminal, and supplies power to each unit in the mastication meter 90.
  • This mastication meter 90 is used as follows, for example. In the shipping stage of the mastication meter 90, the pressure-sensitive sensor module 2 is already in an assembled state and is connected to the main body 1 via the signal cable 33.
  • the subject attaches the mastication meter 90 to the left temple 204 of the spectacle frame 201.
  • the mastication meter 90 can be easily attached to the left temple 204 of the spectacle frame 201 so as to be detachable.
  • the mastication meter 90 is attached to the subject's temporal region 98 together with the left temple 204. Therefore, for example, the physical burden on the subject is less to maintain the wearing state than when the subject is worn on the ear canal or jaw of the subject.
  • the pressure-sensitive sensor module 2 covered with the sensor cover 4 is sandwiched between the scalp covering the temporal muscle 99 of the subject and the auricle 97, and the scalp covering the temporal muscle 99 of the subject is sandwiched.
  • the sensor cover 4 contacts. Therefore, compared with the case where the sheet-like pressure-sensitive sensor 50 is exposed, the wearing feeling is improved for the subject.
  • the subject presses the push-type switch of the operation unit 130 to instruct to start the operation of the mastication meter 90, and starts a mastication operation after starting a meal.
  • the sheet-like pressure sensor 50 receives pressure from the temporal muscle 99 and outputs a change in pressure according to the movement of the temporal muscle 99 as a change in electrical resistance.
  • the sensor portion corresponding to the protrusions 3p1 and 3p2 in the sheet-like pressure sensor 50 sandwiched between the temporal muscle 99 and the protrusions 3p1 and 3p2. 50-1 and 50-2 are strongly pressed. Thereby, according to a test subject's mastication operation, the output of the pressure sensor 50 changes a lot.
  • the controller 110 mounted on the main body 1 counts the number of mastications based on the output of the pressure sensor 50.
  • threshold values ⁇ 1 and ⁇ 2 are set for the outputs C1 and C2 of the pressure sensor 50, and the number of mastications is set according to the number of times the outputs C1 and C2 of the pressure sensor 50 exceed or fall below the threshold values ⁇ 1 and ⁇ 2. Count.
  • the threshold values ⁇ 1 and ⁇ 2 are set according to the output level before starting the mastication operation.
  • the output of one sensor portion 50-1 of the pressure sensor 50 due to the mounting position of the pressure sensor module 2 (sheet-like pressure sensor 50) on the temporal region 98 of the subject.
  • C1 is larger than the output C2 of the other sensor portion 50-2.
  • the controller 110 counts the number of mastications based on the output C1 of the sensor portion 50-1 of one of the pressure-sensitive sensors 50 (which has a larger output). Thereby, the number of mastications can be accurately measured with simple signal processing.
  • the number of mastications measured during one meal is accumulated in real time and stored in the storage unit 115.
  • the control unit 110 can be used even when the mastication meter 90 is attached to various rod-like objects. Can measure the number of chewing cycles with simple signal processing.
  • the sheet-like pressure sensor 50 is mounted in a state of being sandwiched between the left temple 204 and the subject's temporal region 98, even if the subject shakes his / her head, for example, the subject's temporal region 98. In contrast, the pressure sensor 50 can be prevented from being displaced relatively. Therefore, for example, the number of mastications can be measured with higher accuracy than when a sensor is provided on a clip that is hooked on the ear.
  • the control unit 110 relates the display 140B (see FIG. 3) provided on the inner side (the side that enters the visual field of the subject) of the outer peripheral surface of the main body 1 to the mastication operation of the subject. As provision of information, it is turned on temporarily (for example, for 0.2 seconds) for each mastication operation. A subject who sees the lighting of the display 140B during a meal can recognize that the mastication operation is being performed correctly.
  • control part 110 displays on the indicator 140A (refer FIG. 1) provided in the outer part among the outer peripheral surfaces of this main body 1 in real time, updating the number of mastication memorize
  • the subject can recognize the number of mastications in one meal by looking at the display 140A.
  • control unit 110 controls the communication unit 180 to include information related to the mastication operation of the subject (which may include data representing the output of the pressure-sensitive sensor 50 as it is) as an external computer device via the network. For example, you may transmit to the test subject's own smart phone 600 (refer FIG. 14). Thereby, the information regarding a subject's mastication operation
  • FIG. 14 illustrates a configuration of a system (the whole is denoted by reference numeral 700) including the mastication meter 90 and the smartphone 600 described above.
  • This system 700 includes a mastication meter 90 and a smartphone 600 as a computer device so that they can communicate with each other via a network 900.
  • the smartphone 600 includes a main body 600M, a control unit 610, a storage unit 620, an operation unit 630, a display 640, a communication unit 680, and a power supply unit 690 mounted on the main body 600M.
  • This smartphone 600 is obtained by installing application software described later on a commercially available smartphone.
  • the control unit 610 includes a CPU and its auxiliary circuit, controls each unit of the smartphone 600, and executes processing according to the program and data stored in the storage unit 620. For example, based on an instruction input via the operation unit 630, data input from the communication unit 680 is processed, and the processed data is stored in the storage unit 620, displayed on the display 640, or communicated. Or output via the unit 680.
  • the storage unit 620 includes a RAM (Random Access Memory) used as a work area necessary for executing the program by the control unit 610 and a ROM (Read for reading a basic program to be executed by the control unit 610. Only Memory). Further, as a storage medium of an auxiliary storage device for assisting the storage area of the storage unit 620, a semiconductor memory (memory card, SSD (Solid State Drive)) or the like may be used.
  • the operation unit 630 includes a touch panel provided on the display 640 in this example.
  • a keyboard or other hardware operation device may be included.
  • the display 640 includes a display screen made up of an LCD (liquid crystal display element) or an organic EL (electroluminescence) display in this example.
  • the display 640 displays various images on the display screen according to control by the control unit 610.
  • the communication unit 680 is configured to be capable of wireless communication (for example, BLE communication) with the mastication meter 90 via the network 900 under the control of the control unit 610.
  • wireless communication for example, BLE communication
  • the power supply unit 690 includes a rechargeable battery in this example, and supplies power to each unit of the smartphone 600.
  • a user may be a person other than the subject
  • installs application software referred to as a “mastication number display program” in the smartphone 600 in advance.
  • This mastication number display program is for processing information (especially data representing the number of mastications) from the mastication meter 90 to create an image relating to the mastication operation of the subject.
  • the communication unit 680 of the smartphone 600 receives information on the mastication operation of the subject from the mastication meter 90 via the network 900.
  • the control unit 610 functions as a display processing unit to process information related to the mastication operation of the subject and create an image related to the mastication operation of the subject as illustrated in FIGS. 15 and 16, for example.
  • the display 640 displays an image relating to the mastication operation of the subject created by the control unit 610.
  • FIG. 15 shows a day data mode screen representing a time transition of the number of mastications in one day as an example of an image related to the mastication operation displayed on the display 640 of the smartphone 600.
  • the date data mode screen includes a date display area 641 representing today's date (in this example, 2016/07/10) and a bar graph area 642 representing the time transition of the number of mastications in one day in order from the top.
  • a mastication number display area 643 representing the number of mastications accumulated up to today's current time.
  • the bar graph area 642 the number of mastications per hour per day is displayed as a bar graph with the horizontal axis representing time and the vertical axis representing the number of mastications.
  • the number of mastications accumulated up to today's current time is displayed as a numerical value.
  • the user who sees the screen in the day data mode can intuitively recognize the time transition of the number of chewing times per day for the subject.
  • an event button 644 for recording the start time and end time of the meal in one day is displayed below the mastication number display area 643. Also, at the bottom of this screen, a month data mode button 645 for displaying a screen of the month data mode described below, a day data mode button 646 for displaying the screen of this day data mode, A setting button 647 for displaying the setting mode screen, a sensor adjustment button 648 for displaying the sensor adjustment mode screen, and a logger button 649 for displaying the logger mode screen are displayed (FIG. The same applies to FIGS. 16 to 19).
  • FIG. 16 shows a screen of a month data mode representing a transition of the number of mastications per day in January as another example of the image related to the mastication operation displayed on the display 640 of the smartphone 600.
  • the month display area 650 representing the month to which today belongs (in this example, 2016/07)
  • the calendar area 651 representing the number of mastications per day in January, as numerical values
  • 1 A line graph display area 652 for displaying the number of chewing times per day in the month as a line graph is displayed.
  • the initial letters “S”, “M”, “T”, “W”, “T”, “F”, and “S” representing Sunday to Saturday are displayed in the top column.
  • numbers representing each day from 1st to 10th of July 2016 and the number of chewing times (numerical values) corresponding to each day are displayed side by side in a pair of upper and lower cells.
  • the mastication number (numerical value) of the day that was achieved in the target value of the mastication number in the day is displayed in red, while the mastication number (numerical value) of the day that was not achieved in the target value of the mastication number in the day is displayed in black It is desirable to change the display color depending on whether or not the target value of the number of chewing times in a day has been achieved.
  • the number of mastications per day from July 1st to 10th of July 2016 is displayed as a line graph, and the target value of the number of mastications per day (in this example, 3000 times) ) Is displayed.
  • the user who sees the screen of the day data mode can intuitively recognize the transition of the number of chewing times for each day in January of the subject and the day when the number of chewing times reached the target value and the day when the number of mastication times did not reach.
  • FIG. 17 shows an example of the setting mode screen of the mastication number display program displayed on the display 640 of the smartphone 600.
  • this setting mode screen whether or not the target mastication number setting field 661 for setting the target value of the number of mastications in one day and the indicator 140B of the mastication meter 90 are temporarily turned on every mastication operation.
  • An LED setting field 662 for setting the data and a data clear field 663 for erasing data in the storage unit 115 of the mastication meter 90 are displayed.
  • the target value of the number of mastications per day is set as 3000 times. This target value can be set variably.
  • the LED setting column 662 is set so that the display 140B of the mastication meter 90 is temporarily turned on (ON) for each mastication operation.
  • the user can erase the data in the storage unit 115 of the mastication meter 90 by remote operation and initialize the mastication meter 90.
  • FIG. 18 illustrates a sensor adjustment mode screen of the mastication number display program displayed on the display 640 of the smartphone 600.
  • a message display area 671 “Please move the sensor position” and the direction in which the pressure sensor module 2 should be slid along the left temple 204 of the spectacle frame 201 are indicated by arrows M1 and M2.
  • a slide instruction area 672 is displayed.
  • an image representing an aspect in which the pressure sensor module 2 is mounted together with the left temple 204 of the spectacle frame 201 on a person's temporal region is schematically displayed.
  • the control unit 610 of the smartphone 600 receives data representing the outputs of the two sensor portions 50-1 and 50-2 of the pressure sensor 50 from the mastication meter 90, and outputs the output of any of the sensor portions 50-1 and 50-2.
  • the direction in which the pressure-sensitive sensor module 2 should be slid in the slide instruction area 672 is represented by an arrow M1 or M2. For example, when the output C1 of one sensor portion 50-1 of the pressure sensor 50 is larger than the output C2 of the other sensor portion 50-2 as illustrated in FIG.
  • the arrow M2 is displayed so as to prompt the sensor portion 50-2 of the user to approach the auricle.
  • FIG. 19 shows an example of a logger mode screen of the mastication number display program displayed on the display 640 of the smartphone 600.
  • a data display area 681 for displaying time transitions of outputs C1, C2 of the two sensor portions 50-1, 50-2 of the pressure sensor 50, and two outputs C1, 1 in the data display area 681 are displayed.
  • a data identification display 682, 683 for identifying C2, a start button 684, and a stop button 685 are displayed.
  • the start button 684 displays time transitions of the outputs C 1 and C 2 of the two sensor portions 50-1 and 50-2 of the pressure-sensitive sensor 50 in a graph.
  • the output C1 of the sensor portion 50-1 is represented by a solid line indicated by the data identification display 682, and the output C2 of the sensor portion 50-2 is indicated by a broken line indicated by the data identification display 683.
  • the horizontal axis of the data display area 681 represents time in arbitrary units, and the vertical axis represents the voltage drop when a constant current is applied to the two sensor portions 50-1 and 50-2 of the pressure-sensitive sensor 50 in arbitrary units. It is represented by When the user presses the stop button 685 or when a certain period (for example, 30 seconds) elapses from the start, the display of the data display area 681 is stopped.
  • a user who sees the logger mode screen can intuitively recognize whether or not the mastication meter 90 is operating normally. It is also possible to intuitively confirm whether or not the slide instruction by the arrow M1 or M2 on the sensor adjustment mode screen is correct.
  • the user can intuitively recognize information on the mastication operation of the subject through vision.
  • communication between the communication unit 180 of the mastication meter 90 and the communication unit 680 of the smartphone 600 may be performed either wirelessly or by wire.
  • the mastication meter 90 is attached to the left temple 204 of the spectacle frame 201, but may be attached to the right temple 203. Further, the mastication meter 90 is not limited to the spectacle frame 201 and may be attached to various rod-shaped objects and attached to the subject's temporal region.
  • FIG. 20 shows a state in which the mastication meter 90 is attached to the end vicinity portion 305 of the headband 300.
  • the headband 300 is a type of hair band, and includes a curved portion 302 that is curved in a substantially arc shape, and a pair of substantially straight end portions 305 and 306 that are continuous with the curved portion 302.
  • the number of mastications can be accurately measured with simple signal processing.
  • the sheet-like pressure sensor 50 constituting the pressure sensor module 2 of the mastication meter 90 is separated from each other with respect to the longitudinal direction X of the plate portion 3a by two sensor portions 50-1, 50. -2.
  • the present invention is not limited to this, and the sheet-like pressure sensor 50 may be divided into three or more sensor portions 50-1, 50-2,... With respect to the longitudinal direction X of the plate portion 3a. In that case, the same number of protrusions 3p1, 3p2,... Of the sensor holder 3 are provided corresponding to the three or more sensor portions 50-1, 50-2,. Is desirable. Thereby, the number of chewing times can be measured with higher accuracy.
  • the sheet-like pressure sensor 50 includes three or more sensors. Any of the portions 50-1, 50-2,... Can reliably output a change in pressure according to the movement of the temporal muscle 99 as a change in electrical resistance.
  • the sheet-like pressure sensor 50 is not divided with respect to the longitudinal direction X of the plate portion 3a, and may include only one spiral layer (one sensor portion). In that case, only one protrusion of the sensor holder 3 is sufficient.

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JP3128677U (ja) * 2006-11-02 2007-01-18 日陶科学株式会社 咀嚼回数検出装置
JP2010516186A (ja) * 2007-01-12 2010-05-13 コピン コーポレーション 単眼式の表示装置
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