WO2021235333A1 - Fatigue determination device, fatigue determination method, fatigue determination program, fatigue determination system, and computer-readable non-transitory recording medium - Google Patents

Fatigue determination device, fatigue determination method, fatigue determination program, fatigue determination system, and computer-readable non-transitory recording medium Download PDF

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Publication number
WO2021235333A1
WO2021235333A1 PCT/JP2021/018352 JP2021018352W WO2021235333A1 WO 2021235333 A1 WO2021235333 A1 WO 2021235333A1 JP 2021018352 W JP2021018352 W JP 2021018352W WO 2021235333 A1 WO2021235333 A1 WO 2021235333A1
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Prior art keywords
fatigue
person
measured
activity
pulse rate
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PCT/JP2021/018352
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French (fr)
Japanese (ja)
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富男 佐藤
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株式会社タニタ
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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
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/024—Detecting, measuring or recording pulse rate or heart rate
    • A61B5/0245—Detecting, measuring or recording pulse rate or heart rate by using sensing means generating electric signals, i.e. ECG signals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording 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, mobility of a limb
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/22—Ergometry; Measuring muscular strength or the force of a muscular blow

Definitions

  • the present disclosure relates to a fatigue determination device, a fatigue determination method, a fatigue determination program, and a fatigue determination system.
  • Patent Document 1 discloses a fatigue meter that acquires the degree of brain fatigue and the degree of physical fatigue and determines the total degree of fatigue of the subject based on the degree of brain fatigue and the degree of physical fatigue.
  • this fatigue clock acquires the degree of brain fatigue of the person to be measured by referring to the above correspondence based on the degree of fluctuation of the heartbeat interval of the person to be measured calculated from the detected biological signal, and obtains the degree of brain fatigue of the person to be measured from the detected biological signal. Based on the calculated heart rate difference between the time of lying down and the time of measurement, the degree of physical fatigue of the person to be measured is obtained by referring to the above correspondence.
  • the fluctuation degree of the heart rate interval of the person to be measured is used to obtain the degree of brain fatigue, and the degree of physical fatigue is measured when the person to be measured is in a lying position. Since the difference in heart rate from time is used and different indexes are used to calculate the degree of brain fatigue and the degree of physical fatigue, the configuration for acquiring the degree of fatigue is complicated.
  • an object of the present disclosure is to provide a fatigue determination device, a fatigue determination method, a fatigue determination program, and a fatigue determination system that can easily determine the fatigue of a person to be measured.
  • the fatigue determination device of one aspect of the present disclosure includes an activity determination means for determining whether or not the person to be measured is in an active state, and the person to be measured when the person to be measured is determined to be in an active state.
  • the physical fatigue of the person to be measured is determined based on the pulse rate, and the mental fatigue of the person to be measured is determined based on the pulse rate of the person to be measured when it is determined that the person to be measured is not in an active state. It is provided with a fatigue determining means for determining.
  • the physical and mental fatigue of the measured person is determined using the same index of the presence or absence of the activity state of the measured person and the pulse rate of the measured person. It can be easily determined. Further, according to this configuration, processing such as frequency analysis can be reduced as compared with the case where mental fatigue is determined by using the fluctuation of the heartbeat as in Patent Document 1 (Japanese Patent Laid-Open No. 2017-63966). Therefore, the processing load is reduced.
  • the fatigue determination means is based on the integrated value of the pulse rate of the person to be measured corresponding to the first time region in which the person to be measured is determined to be in an active state. May be determined, and the mental fatigue may be determined based on the integrated value of the pulse rate of the person to be measured corresponding to the second time region in which the person to be measured is determined not to be in an active state. According to this configuration, the fatigue of the person to be measured can be easily determined. In addition, fatigue is preferably calculated by integration because it is related to the accumulation of load applied to the living body.
  • the fatigue determination means is the integrated value of the pulse rate of the person to be measured and the person to be measured corresponding to the first time region in which the person to be measured is determined to be in an active state.
  • the physical fatigue may be determined based on the integrated value of the amount of activity. According to this configuration, the amount of activity of the person to be measured can be reflected in physical fatigue.
  • the fatigue determination means causes the physical fatigue when the pulse rate of the person to be measured is less than a predetermined threshold value even if the person to be measured is determined to be in an active state. It is not necessary to determine that it has occurred. According to this configuration, light exercise in which the pulse rate does not increase to the extent of fatigue can be excluded from the fatigue determination target. Since light exercise can be expected to have a relaxing effect, it may not be preferable to treat it as fatigue.
  • the fatigue determination device of one aspect of the present disclosure includes an activity determination means for determining whether or not the subject is in an active state, and a pulse rate of the subject for a predetermined period according to the determination result by the activity determination means. It is provided with a fatigue determining means for determining the fatigue of the person to be measured based on the integrated value of. According to this configuration, since the fatigue of the measured person is determined based on the integrated value of the pulse rate of the measured person, the fatigue of the measured person can be easily determined.
  • the fatigue determination means determines the recovery state of fatigue of the person to be measured based on the pulse rate of the person to be measured within a predetermined time after the activity of the person to be measured is completed. May be good.
  • the recovery state of fatigue has been subjectively and qualitatively determined by the person or the like.
  • the recovery state of fatigue can be quantitatively determined as compared with the case of using the conventional method of determining the recovery state of fatigue subjectively.
  • the fatigue determination means may determine the recovery state of fatigue of the subject based on the lowest pulse rate of the subject during sleep of the subject. According to this configuration, the recovery state of fatigue can be quantitatively determined as compared with the case of using the conventional method of determining the recovery state of fatigue.
  • the activity determination means may determine whether or not the subject is in an active state based on the measurement result of the acceleration sensor worn by the subject. According to this configuration, it is possible to easily determine whether or not the person to be measured is in an active state.
  • the activity determination means determines that the person to be measured is in an active state when the amount of activity of the person to be measured based on the measurement result of the acceleration sensor is equal to or more than a predetermined threshold value. When the amount of activity is less than the threshold value, it may be determined that the person to be measured is not in an active state. According to this configuration, it is possible to easily determine whether or not the person to be measured is in an active state.
  • the fatigue determination device may include an output control means for outputting the determination result by the fatigue determination means to the output means. According to this configuration, it is possible to notify the person to be measured of the degree of fatigue.
  • the activity determination means may classify the determined activity state, and the fatigue determination means may determine the fatigue of the person to be measured based on the result of classification by the activity determination means. .. According to this configuration, the fatigue of the person to be measured can be determined more accurately.
  • the fatigue determination method of one aspect of the present disclosure includes a first step of determining whether or not the person to be measured is in an active state, and a method of determining the person to be measured when the person to be measured is determined to be in an active state.
  • the physical fatigue of the person to be measured is determined based on the pulse rate
  • the mental fatigue of the person to be measured is determined based on the pulse rate of the person to be measured when it is determined that the person to be measured is not in an active state. It has a second step of determining.
  • the computer is used as an activity determination means for determining whether or not the person to be measured is in an active state, and the subject when the person to be measured is determined to be in an active state.
  • the physical fatigue of the person to be measured is determined based on the pulse rate of the measurer, and the mentality of the person to be measured is based on the pulse rate of the person to be measured when it is determined that the person to be measured is not in an active state. It functions as a fatigue determination means for determining target fatigue.
  • the fatigue determination system of one aspect of the present disclosure includes an activity information acquisition means for measuring activity information indicating an activity state of a person to be measured, a pulse rate acquisition means for acquiring the pulse rate of the person to be measured, and the activity information. Based on the activity determination means for determining whether or not the person to be measured is in an active state, and the pulse rate of the person to be measured when the person to be measured is determined to be in an active state, the measurement is performed.
  • a fatigue determination means for determining the physical fatigue of a person and determining the mental fatigue of the person to be measured based on the pulse rate of the person to be measured when it is determined that the person to be measured is not in an active state. Be prepared.
  • the fatigue of the person to be measured can be easily determined.
  • FIG. 1 is a schematic configuration diagram of the fatigue determination system of the embodiment.
  • FIG. 2 is a diagram showing the relationship between the activity amount and the pulse rate of the subject, (A) shows the relationship between the activity amount and the pulse rate when physical fatigue occurs, and (B) is a diagram showing the relationship between the activity amount and the pulse rate. The relationship between the amount of activity and the pulse rate when mental fatigue occurs is shown.
  • FIG. 3 is a diagram showing the recovery state of fatigue of the subject, (A) shows the recovery state of fatigue after the end of activity, and (B) shows the recovery state of fatigue based on the pulse rate during sleep. ..
  • FIG. 4 is a flowchart showing the flow of the fatigue determination process of the embodiment.
  • FIG. 5 is a flowchart showing the flow of the activity state determination process of the embodiment.
  • FIG. 6 is a schematic diagram showing the fatigue determination result of the embodiment.
  • FIG. 1 is a schematic configuration diagram of the fatigue determination system 10 of the present embodiment.
  • the fatigue determination system 10 includes a wearable sensor 12, a fatigue determination device 14, and an information processing device 16 owned by the person to be measured.
  • the wearable sensor 12 is worn by the person to be measured to measure the amount of activity of the person to be measured and the time change of the pulse rate.
  • the wearable sensor 12 is worn on the wrist of the person to be measured via a band and is measured. Carried by a person.
  • the wearable sensor 12 of the present embodiment includes an acceleration sensor 20, a pulse sensor 22, and a communication unit 24.
  • the acceleration sensor 20 functions as an activity information acquisition means for measuring the activity information indicating the activity state of the person to be measured
  • the pulse sensor 22 functions as a pulse rate acquisition means for acquiring the pulse rate of the person to be measured.
  • the wearable sensor 12 transmits the measurement results of the acceleration sensor 20 and the pulse sensor 22 to the fatigue determination device 14 via the communication unit 24.
  • the communication unit 24 transmits the measurement result to the fatigue determination device 14 by wireless communication such as WiFi (registered trademark) and BlueTooth (registered trademark).
  • FIG. 2 shows that the fatigue determination device 14 of the present embodiment is an information processing device such as a server, and determines the fatigue state of the person to be measured based on the measurement result transmitted from the wearable sensor 12.
  • the fatigue determination device 14 of the present embodiment is an information processing device such as a server, and determines the fatigue state of the person to be measured based on the measurement result transmitted from the wearable sensor 12.
  • the fatigue determination device 14 of the present embodiment has a calculation unit 30 composed of a CPU (Central Processing Unit) and the like, a ROM (Read Only Memory) 32 in which various programs and various data are stored in advance, and various programs by the calculation unit 30. Data transmission / reception between a RAM (Random Access Memory) 34 used as a work area or the like at the time of execution, a storage unit 36 for storing various programs and various data, a wearable sensor 12, and another information processing device 16 and the like. A communication unit 38 for performing is provided.
  • a CPU Central Processing Unit
  • ROM Read Only Memory
  • the calculation unit 30 of the present embodiment includes an activity determination unit 40, a fatigue determination unit 42, and a determination result output control unit 44.
  • each function of the activity determination unit 40, the fatigue determination unit 42, and the determination result output control unit 44 is realized by executing the program stored in the storage unit 36 by the calculation unit 30 as an example.
  • each function may be realized by individual hardware such as an ASIC (Application Specific Integrated Circuit) included in the fatigue determination device 14.
  • ASIC Application Specific Integrated Circuit
  • the activity determination unit 40 determines whether or not the person to be measured is in an active state.
  • the activity determination unit 40 of the present embodiment determines whether or not the person to be measured is in an active state based on the measurement result (acceleration) of the acceleration sensor 20 included in the wearable sensor 12 worn by the person to be measured. That is, the measurement result of the acceleration sensor 20 corresponds to the activity information indicating the activity state of the person to be measured, and the activity determination unit 40 determines whether or not the person to be measured is in the activity state based on this activity information. ..
  • the activity determination unit 40 of the present embodiment determines that the person to be measured is in an active state when the amount of activity of the person to be measured based on the measurement result (activity information) of the acceleration sensor 20 is equal to or more than a predetermined threshold value. However, when the amount of activity is less than the threshold value, the subject is determined to be inactive.
  • the activity determination unit 40 performs predetermined processing (noise processing, multiplication of predetermined constants, averaging of measurement results, etc.) on the measurement result of the acceleration sensor 20.
  • the amount of activity of the measurer is calculated at predetermined time intervals. That is, when the measurement result by the acceleration sensor 20 is large, the activity amount of the person to be measured is large, while when the measurement result is small, the activity amount of the person to be measured is small.
  • the measurement result itself of the acceleration sensor 20 may be regarded as the amount of activity of the person to be measured.
  • the amount of activity is equal to or greater than the threshold value, it is determined that the subject is in an active state, and when the amount of activity is less than the threshold value, it is determined that the subject is in an inactive resting state.
  • the active state is a case where the subject is moving the body, and can be divided into, for example, low exercise with a low physical load and strong exercise with a high physical load.
  • the resting state is a case where the subject is hardly moving, for example, a case where the subject is sitting or sleeping.
  • the activity determination unit 40 can easily determine whether or not the subject is in an active state by using the measurement result of the acceleration sensor 20 worn by the subject. Further, the activity determination unit 40 classifies the activity state of the person to be measured into a plurality of states by using a threshold value as an example.
  • the fatigue determination unit 42 determines the fatigue state of the person to be measured based on the determination result by the activity determination unit 40 and the measurement result by the pulse sensor 22 transmitted from the wearable sensor 12. More specifically, the fatigue determination unit 42 is subject to measurement based on the integrated value of the pulse rate of the person to be measured in a predetermined period (activity time region and rest time region described later) according to the determination result by the activity determination unit 40. Determine the measurer's fatigue.
  • the fatigue determination unit 42 of the present embodiment includes a physical fatigue determination unit 50 and a mental fatigue determination unit 52.
  • the physical fatigue determination unit 50 determines the physical fatigue of the person to be measured based on the pulse rate of the person to be measured when it is determined that the person to be measured is in an active state.
  • the physical fatigue determination unit 50 of the present embodiment determines physical fatigue based on the integrated value of the pulse rate of the person to be measured corresponding to the activity time region in which the person to be measured is determined to be in an active state. As a result, the physical fatigue determination unit 50 of the present embodiment can easily and quantitatively calculate a value based on the pulse rate in the active state of the person to be measured as the degree of physical fatigue.
  • the mental fatigue determination unit 52 determines the mental fatigue of the person to be measured based on the pulse rate of the person to be measured when it is determined that the person to be measured is not in an active state.
  • the mental fatigue determination unit 52 of the present embodiment determines mental fatigue based on the integrated value of the pulse rate of the subject to be measured corresponding to the rest time region in which the subject is determined to be inactive. As a result, the mental fatigue determination unit 52 of the present embodiment can easily and quantitatively calculate a value based on the pulse rate in the resting state of the subject as the mental fatigue degree.
  • the fatigue determination unit 42 of the present embodiment includes a fatigue recovery determination unit 54, and determines the fatigue recovery state of the person to be measured.
  • the determination result output control unit 44 included in the calculation unit 30 causes the output means to output the determination result (hereinafter referred to as “fatigue determination result”) by the fatigue determination unit 42.
  • the output means is, for example, an information processing device 16 such as a smartphone or a tablet terminal owned by the person to be measured, and the determination result output control unit 44 transfers the fatigue determination result to the information processing device 16 via the communication unit 38. Send.
  • the measurement result transmitted from the wearable sensor 12 to the fatigue determination device 14 is given a different identifier for each person to be measured. Then, the fatigue determination device 14 discriminates the person to be measured by this identifier, and transmits the fatigue determination result of the person to be measured to the information processing device 16 preset for each identifier.
  • FIG. 2 is a diagram showing the relationship between the amount of activity of the subject and the pulse rate.
  • the horizontal axis of FIG. 2 shows time
  • the vertical axis shows the amount of activity and the pulse rate.
  • the amount of activity corresponds to the measurement result by the acceleration sensor 20 included in the wearable sensor 12.
  • the pulse rate corresponds to the measurement result by the pulse sensor 22 included in the wearable sensor 12.
  • FIG. 2A shows the relationship between the amount of activity and the pulse rate when physical fatigue occurs, and the amount of activity is divided into an active state and a resting state, which are considered to be low exercise and strong exercise. ..
  • the pulse rate of the subject generally changes according to the magnitude of the amount of activity. Therefore, the fatigue determination unit 42 obtains an activity time region determined to be in an active state based on the amount of activity of the person to be measured. Then, the physical fatigue determination unit 50 determines the physical fatigue of the person to be measured based on the pulse rate of the person to be measured corresponding to this activity time region.
  • the activity time region is a time region determined to be low exercise or strong exercise in FIG. 2 (A). On the other hand, the time area other than the activity time area is the rest time area.
  • the physical fatigue determination unit 50 of the present embodiment determines physical fatigue based on the integrated value of the pulse rate of the person to be measured corresponding to the activity time region. That is, when the value calculated by the physical fatigue determination unit 50 is large, it is evaluated that the physical fatigue of the person to be measured is large.
  • the physical fatigue determination unit 50 may determine physical fatigue only by the integrated value of the pulse rate corresponding to the activity time region without using the integrated value of the activity amount, or the pulse corresponding to the activity time region. Physical fatigue may be determined by the product (or sum) of the integral value of the number and the integral value of the activity amount.
  • the judgment result of the physical fatigue of the person to be measured is strongly influenced by the physical strength of the person to be measured. For example, even with the same exercise, if the physical strength of the subject is high, the increase in the pulse rate will be small, so physical fatigue will be evaluated small, but if the physical strength of the subject is low, the pulse will be evaluated. Physical fatigue is highly valued because the increase in numbers will be large.
  • the activity amount of the person to be measured can be reflected in the physical fatigue. That is, the degree of influence of the physical strength of the subject on the calculated physical fatigue is small, and if the amount of activity is large, the physical fatigue is highly evaluated, and if the amount of activity is small, the physical fatigue is evaluated small. ..
  • FIG. 2B shows the relationship between the amount of activity and the pulse rate when mental fatigue occurs.
  • the pulse rate may increase even though the subject is in an inactive resting time region. At this time, it is considered that the subject is in a tense state or an excited state related to mental fatigue. Therefore, the mental fatigue determination unit 52 determines the mental fatigue of the person to be measured based on the pulse rate of the person to be measured corresponding to the rest time region.
  • the mental fatigue determination unit 52 of the present embodiment determines mental fatigue based on the integrated value of the pulse rate of the subject corresponding to the rest time region, and is calculated by the mental fatigue determination unit 52. If the value given is large, it is evaluated that mental fatigue is large.
  • a predetermined constant may be multiplied, divided, added, or subtracted from the integrated value of the pulse rate and the integrated value of the activity amount. This constant is set, for example, based on the age and gender of the subject.
  • the fatigue determination device 14 of the present embodiment physically determines the person to be measured based on the pulse rate of the person to be measured when it is determined that the person to be measured is in an active state. Fatigue is determined, and the mental fatigue of the subject is determined based on the pulse rate of the subject when it is determined that the subject is not in an active state. As described above, the fatigue determination device 14 of the present embodiment determines the physical fatigue and mental fatigue of the subject using the same index of the presence / absence of the activity state of the subject and the pulse rate of the subject. Therefore, the fatigue of the person to be measured can be easily determined.
  • the fatigue determination device 14 of the present embodiment is used for frequency analysis and the like as compared with the case where mental fatigue is determined by using the fluctuation of the heartbeat as in Patent Document 1 (Japanese Unexamined Patent Publication No. 2017-63966). Since the processing can be reduced, the processing load can be reduced.
  • the fatigue determination device 14 of the present embodiment determines the fatigue of the person to be measured based on the integrated value of the pulse rate of the person to be measured, the fatigue of the person to be measured can be easily determined.
  • fatigue is preferably calculated by integration because it is related to the accumulation of load applied to the living body.
  • the fatigue recovery determination of the person to be measured will be described with reference to FIG.
  • the recovery state of fatigue was subjectively and qualitatively determined by the person or the like.
  • the fatigue recovery determination unit 54 of the present embodiment the fatigue recovery state can be quantitatively determined as compared with the case where the conventional subjective fatigue recovery state determination method is used.
  • FIG. 3A is a diagram showing a recovery state of physical fatigue.
  • the pulse rate after exercising gradually decreases with the end of exercising. At this time, the more fatigue is accumulated, the smaller the degree of decrease in the pulse rate is. Thus, there is a correlation between the decrease in pulse rate after exercise and the recovery state of fatigue.
  • the recovery state of fatigue is slower in the order of pulse rates A1, A2, A3, and A4.
  • the fatigue recovery determination unit 54 of the present embodiment determines the fatigue recovery state of the person to be measured based on the pulse rate of the person to be measured within a predetermined time (for example, 1 hour) from the end of the activity of the person to be measured. ..
  • the timing of the end of the activity of the subject corresponds to the timing of the change from the activity time region to the rest time region.
  • the fatigue recovery determination unit 54 sets a threshold value in advance based on, for example, the pulse rate of the person to be measured in the resting state, and the pulse rate of the person to be measured within a predetermined time from the end of the activity is equal to or higher than this threshold value. If this is the case, it is determined that the fatigue of the subject has not recovered. On the other hand, the fatigue recovery determination unit 54 determines that the fatigue of the measured person has recovered when the pulse rate of the measured person becomes less than this threshold value within a predetermined time. Then, the fatigue recovery determination unit 54 outputs this determination result as a fatigue recovery determination result.
  • the fatigue recovery determination unit 54 quantifies the fatigue recovery determination result as the degree of fatigue recovery of the person to be measured. Specifically, when the fatigue recovery determination unit 54 determines that the fatigue of the person to be measured has not recovered, for example, a value based on the difference between the threshold value and the pulse rate at that time is calculated as the fatigue recovery degree. do. Further, the fatigue recovery determination unit 54 calculates, for example, the degree to which the pulse rate of the person to be measured decreases from the average value of the pulse rate in the activity time region as the fatigue recovery degree after the activity is completed. Further, the fatigue recovery determination unit 54 may determine the time when the pulse rate of the person to be measured reaches the threshold value after the activity is completed.
  • the pulse rate becomes constant within a predetermined time after the end of the activity, it is determined that the fatigue of the person to be measured has recovered, and when the pulse rate does not become constant, the person to be measured has recovered. It may be determined that the fatigue has not recovered.
  • FIG. 3B is a diagram showing a recovery state of fatigue based on the pulse rate during sleep, and shows daily changes in the minimum pulse rate during sleep (hereinafter referred to as “minimum pulse rate during sleep”). There is. If the minimum pulse rate during sleep does not decrease, it is considered that fatigue is not removed. In the example of FIG. 3B, the lowest sleep pulse rate indicated by points B4 and B5 is higher than that of points B1 to B2 and point B6, and the lowest sleep pulse rate on the day indicated by points B4 and B5. , It is considered that the fatigue has not been fully recovered.
  • the fatigue recovery determination unit 54 of the present embodiment determines the recovery state of fatigue of the subject based on the minimum pulse rate of the subject during sleep of the subject. Specifically, the fatigue recovery determination unit 54 sets in advance a threshold value based on, for example, the minimum sleep pulse rate in a state where the subject is recovering from fatigue, and the minimum sleep pulse rate of the subject is set. When it is equal to or higher than this threshold, it is determined that the fatigue of the subject has not recovered, and when the minimum sleep pulse rate of the subject is less than this threshold, it is determined that the fatigue of the subject has recovered.
  • the fatigue recovery determination unit 54 determines that the fatigue of the person to be measured has not recovered, for example, the fatigue recovery determination unit 54 calculates and quantifies a value based on the difference between the threshold value and the lowest pulse rate during sleep as the degree of fatigue recovery. It may be changed.
  • the fatigue recovery state shown in FIG. 3A indicates the fatigue recovery state for each activity of the subject.
  • the fatigue recovery state shown in FIG. 3B is the daily fatigue recovery state of the subject, in other words, the accumulated fatigue recovery state.
  • the fatigue determination process shown in FIG. 4 is executed at 1-minute intervals with 1 minute as a unit time.
  • the unit time is not limited to 1 minute, and may be another time such as 30 seconds or 2 minutes.
  • step S100 the acceleration sensor 20 provided in the wearable sensor 12 worn by the person to be measured measures the acceleration, and the wearable sensor 12 transmits the measured acceleration to the fatigue determination device 14.
  • the activity determination unit 40 calculates the amount of activity for one minute based on the acceleration received from the wearable sensor 12.
  • the activity determination unit 40 may calculate the activity amount of the person to be measured every 1 minute (that is, the same as the unit time of the pulse rate) as in the present embodiment, or every common multiple of the unit time of the pulse rate. It may be calculated every 6 minutes (for example, every 6 minutes). As a result, the fatigue determination process can determine fatigue using the amount of activity and the pulse rate acquired at the same time.
  • the activity determination unit 40 determines whether or not the person to be measured is in an active state based on the amount of activity, and the process proceeds to step S110. Specifically, the activity determination unit 40 determines the state of the person to be measured as one of a long-term activity state, a short-term activity state, a long-term rest state, and a short-term rest state. The details of this determination will be described later with reference to FIG.
  • step S106 the pulse sensor 22 provided in the wearable sensor 12 worn by the person to be measured measures the pulse rate, and the wearable sensor 12 transmits the measured pulse rate to the fatigue determination device 14.
  • the fatigue determination device 14 calculates the pulse rate for one minute, and the process proceeds to step S110.
  • the pulse rate for one minute is, for example, the average value of the pulse rate for one minute received from the wearable sensor 12.
  • steps S100 to 104 and the processes of steps S106 and 108 are executed in parallel.
  • step S110 the fatigue determination unit 42 determines whether or not the person to be measured is determined to be in a long-term active state in step S104, and if a positive determination is made, the process proceeds to step S112, and if a negative determination is made, the process proceeds to step S116. Transition.
  • the long-term active state is, for example, a state in which the person to be measured is exercising for a predetermined time or longer.
  • step S112 the fatigue determination unit 42 determines whether or not the pulse wave number of the person to be measured is high, and if a positive determination is made, the process proceeds to step S114, and if a negative determination is made, the process proceeds to step S122. Whether or not the pulse rate is high is determined by whether or not the pulse rate is equal to or higher than a predetermined threshold value.
  • step S114 the physical fatigue determination unit 50 integrates the pulse rate as physical fatigue, and in step 122, the fatigue determination unit 42 determines that the person to be measured is not tired.
  • the fatigue determination unit 42 of the present embodiment determines that the subject is in an active state, if the pulse rate of the subject is less than a predetermined threshold value, physical fatigue occurs. It is not determined to be present.
  • light exercise low exercise in which the pulse rate does not increase to the extent of fatigue can be excluded from the fatigue determination target. Since light exercise can be expected to have a relaxing effect, it may not be preferable to treat it as fatigue.
  • the person to be measured has high physical strength, it is easy to determine that the fatigue is smaller than that of a person with low physical strength even if the amount of activity is the same.
  • step S116 the fatigue determination unit 42 determines whether or not the pulse wave number of the person to be measured is high, and if a positive determination is made, the process proceeds to step S124, and if a negative determination is made, the process proceeds to step S118.
  • Whether or not the pulse rate is high is determined by whether or not the pulse rate is equal to or higher than a predetermined threshold value.
  • the threshold value used in the process of step S116 may be different from the threshold value used in step S112. For example, the threshold value used in step S112, which is a long-term active state, may be higher than the threshold value used in step S116.
  • step S118 the fatigue determination unit 42 determines whether or not the person to be measured is determined to be in a long-term resting state in step S104, and if a positive determination is made, the process proceeds to step S122, and if a negative determination is made, the process proceeds to step S120. Transition.
  • the long-term resting state of the present embodiment is a state in which the subject is sleeping.
  • step S120 the fatigue recovery determination unit 54 calculates the minimum pulse rate for determining fatigue recovery during sleep, and in step S122, the fatigue determination unit 42 determines that the person to be measured is not tired.
  • step S124 the fatigue determination unit 42 determines whether or not the subject is currently in a resting state but has been in a long-term active state until a predetermined time (m minutes before), and in the case of an affirmative determination, the process proceeds to step S126. , In the case of a negative determination, the process proceeds to step S128.
  • step S126 the fatigue recovery determination unit 54 determines the fatigue recovery after a long-term activity state.
  • step S1208 the activity state of the subject is a short-term resting state or a short-term activity state, and the mental fatigue determination unit 52 integrates the pulse rate of the subject as mental fatigue.
  • FIG. 5 is a flowchart showing the flow of the activity state determination process for determining the activity state of the person to be measured, which is executed in step S104.
  • the activity state determination process is executed by the activity determination unit 40.
  • step S200 it is determined whether or not the amount of activity is equal to or higher than a predetermined threshold value, and if a positive determination is made, the process proceeds to step S202, and if a negative determination is made, the process proceeds to step S210.
  • step S202 the state of the person to be measured is determined to be the active state.
  • step S204 it is determined whether or not the activity state has continued for a predetermined time (n minutes) or more, and if it is affirmative, the process proceeds to step S206, and the state of the person to be measured is determined to be a long-term activity state. On the other hand, in the case of a negative determination, the process proceeds to step S208, and the state of the person to be measured is determined to be a short-term activity state.
  • step S210 the state of the person to be measured is determined to be a resting state.
  • step S212 it is determined whether or not the resting state has continued for a predetermined time (s minutes) or more, and if a positive judgment is made, the process proceeds to step S214, and the state of the person to be measured is determined to be a long-term resting state. On the other hand, in the case of a negative determination, the process proceeds to step S216, and the state of the person to be measured is determined to be a short-term rest state.
  • the fatigue determination unit 42 determines the fatigue of the person to be measured based on the result of classification by the activity determination unit 40. As a result, the fatigue determination device 14 can more accurately determine the fatigue of the person to be measured.
  • FIG. 6 is a schematic diagram showing the fatigue determination result, and the fatigue determination result shown in FIG. 6 is displayed on, for example, the display of the information processing apparatus 16 owned by the subject, or printed on the recording paper by the printing apparatus. Will be done. Further, the same contents as those shown in the schematic diagram shown in FIG. 6 may be output from the speaker as audio. Further, the fatigue determination result may be output, for example, at a predetermined time every day, or may be output according to the operation of the information processing apparatus 16 by the person to be measured.
  • the degree of fatigue, the degree of physical fatigue, and the degree of mental fatigue are determined in a plurality of stages, and the determined stages are displayed on the display. That is, the physical fatigue determination unit 50 and the mental fatigue determination unit 52 determine the physical fatigue level and the mental fatigue level based on the integrated value of the pulse rate or the integrated value of the pulse rate and the integrated value of the activity amount. Judge in one of multiple stages. In the example of FIG. 6, the degree of fatigue is determined to be one of five stages, and the larger the number, the more tired the subject is.
  • the larger value of the physical fatigue and the mental fatigue is the total fatigue.
  • the degree of fatigue, the degree of physical fatigue, and the degree of mental fatigue are each given an explanation according to the determined stage.
  • a life activity plan 60 that is effective in recovering from fatigue of the person to be measured may be attached according to the determination results of the degree of physical fatigue and the degree of mental fatigue.
  • the fatigue determination result may be displayed in another mode.
  • the highest degree of physical fatigue and mental fatigue may be shown as 100%, and the lowest degree may be shown as 0%.
  • the overall fatigue level may be shown in multiple stages.
  • the life activity plan 60 the type of meal recommended for the person to be measured, the amount of meal, the type of supplement, the sleeping time recommended for the person to be measured, and the like may be added.
  • the fatigue determination result may include a quantified degree of fatigue recovery, or a diagram similar to the schematic diagram of FIG. 3 may be output as the degree of fatigue recovery.
  • the fatigue determination system 10 of the present embodiment will be described.
  • the case where the person to be measured is exercising or the like is described as an active state, but in the following, the case where the person to be measured is working will be described as an active state.
  • the person to be measured is, for example, a truck driver who engages in a delivery business or the like.
  • the driver who is working wears the wearable sensor 12, and the measurement result by the wearable sensor 12 is transmitted to the fatigue determination device 14 at predetermined time intervals.
  • the fatigue determination device 14 determines the fatigue of the person to be measured based on the received measurement result.
  • the fatigue determination result is output to the information processing device 16 owned by the driver at a predetermined time of the day (for example, 18:00) and confirmed by the driver, and the driver eats and sleeps according to the life activity plan 60.
  • the driver wears the wearable sensor 12 even during sleep, and the degree of recovery from fatigue during sleep is determined by the fatigue determination device 14. Then, this fatigue recovery degree is transmitted to the information processing device operated by the delivery operation manager the next morning.
  • the operation manager refers to the degree of recovery from the driver's fatigue and creates a delivery plan for the day on which the driver is less likely to overwork.
  • a mode of determining whether or not the person to be measured is in an active state by the fatigue determination device 14 based on the measurement result of the acceleration sensor 20 included in the wearable sensor 12 has been described.
  • the activity state of the person to be measured may not be determined based on the measurement result of the acceleration sensor 20, but the activity state of the person to be measured may be determined based on other information.
  • the work schedule of the person to be measured is managed as digital data, it may be determined whether or not the person to be measured is in an active state based on this work schedule.
  • the accelerometer 20 may be provided in a device (for example, an activity meter that can be put in a pocket of clothes) carried by the person to be measured, which is separate from the wearable sensor 12.
  • the fatigue determination device 14 may acquire the acceleration (activity information) of the person to be measured from the device provided with the acceleration sensor 20 and determine whether or not the person to be measured is in an active state.
  • the device equipped with the acceleration sensor 20 may determine whether or not the person to be measured is in an active state, and the fatigue determination device 14 is such that the person to be measured is active from the device equipped with the acceleration sensor 20. The determination result of whether or not it is a state may be acquired. Further, the device provided with the acceleration sensor 20 may function as the fatigue determination device 14.
  • the fatigue determination device 14 is an information processing device different from the wearable sensor 12
  • the present embodiment is not limited to this.
  • the fatigue determination device 14 may be integrated with the wearable sensor 12, and the fatigue determination result and the fatigue recovery determination result may be transmitted to the server and managed.
  • the fatigue determination result and the like are displayed on the display provided in the wearable sensor 12 or displayed on the information processing device 16 owned by the person to be measured.
  • the function of the fatigue determination device 14 may be provided in the information processing device 16 owned by the person to be measured, and the fatigue determination result or the like may be displayed on the information processing device 16.
  • Fatigue judgment device 20 Accelerometer 40 Activity judgment unit (activity judgment means) 42 Fatigue judgment unit (fatigue judgment means) 44 Judgment result output control unit (output control means)

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Abstract

A fatigue determination device (14) determines whether a person to be measured is in an active state on the basis of a measurement result of an acceleration sensor (20) provided to a wearable sensor (12) worn by the person to be measured. Then, the fatigue determination device (14) determines a physical fatigue of the person to be measured on the basis of a pulse rate of the person to be measured when the person to be measured is determined to be in an active state, and determines a mental fatigue of the person to be measured on the basis of a pulse rate of the person to be measured when the person to be measured is determined not to be in an active state.

Description

疲労判定装置、疲労判定方法、疲労判定プログラム、疲労判定システム、及びコンピュータ読み取り可能な非一時的記憶媒体Fatigue determination device, fatigue determination method, fatigue determination program, fatigue determination system, and computer-readable non-temporary storage medium 関連出願の相互参照Cross-reference of related applications
　本出願では、２０２０年５月２０日に日本国に出願された特許出願番号２０２０－０８８０３３の利益を主張し、当該出願の内容は引用することによりここに組み込まれているものとする。 This application claims the benefit of patent application number 2020-088033 filed in Japan on May 20, 2020, and the content of the application shall be incorporated herein by citation.
　本開示は、疲労判定装置、疲労判定方法、疲労判定プログラム、及び疲労判定システムに関する。 The present disclosure relates to a fatigue determination device, a fatigue determination method, a fatigue determination program, and a fatigue determination system.
　近年、被測定者の疲労を判定する装置の開発が進んでいる。 In recent years, the development of a device for determining the fatigue of the person to be measured has been progressing.
　特許文献１には、脳疲労度及び肉体疲労度を取得し、脳疲労度及び肉体疲労度に基づき被測定者の総合的な疲労度を判定する疲労度計が開示されている。 Patent Document 1 discloses a fatigue meter that acquires the degree of brain fatigue and the degree of physical fatigue and determines the total degree of fatigue of the subject based on the degree of brain fatigue and the degree of physical fatigue.
　特開２０１７－６３９６６号公報に記載の疲労度計では、心拍間隔の揺らぎ度および臥位時に対する立位時の心拍数差と脳疲労度及び肉体疲労度に関する共通の指標との対応関係を記憶部が記憶している。そして、この疲労時計は、検知された生体信号から算出した被測定者の心拍間隔の揺らぎ度に基づき上記対応関係を参照して被測定者の脳疲労度を取得し、検知された生体信号から算出した被測定者の臥位時と測定時との心拍数差に基づき上記対応関係を参照して被測定者の肉体疲労度を取得する。 In the fatigue degree meter described in JP-A-2017-63966, the correspondence between the fluctuation degree of the heartbeat interval and the heart rate difference in the standing position with respect to the lying position and the common index regarding the brain fatigue degree and the physical fatigue degree is memorized. The department remembers. Then, this fatigue clock acquires the degree of brain fatigue of the person to be measured by referring to the above correspondence based on the degree of fluctuation of the heartbeat interval of the person to be measured calculated from the detected biological signal, and obtains the degree of brain fatigue of the person to be measured from the detected biological signal. Based on the calculated heart rate difference between the time of lying down and the time of measurement, the degree of physical fatigue of the person to be measured is obtained by referring to the above correspondence.
　しかしながら、特許文献１に記載の疲労度計では、脳疲労度を取得するために被測定者の心拍間隔の揺らぎ度を用い、肉体疲労度を取得するために被測定者の臥位時と測定時との心拍数差を用いており、脳疲労度と肉体疲労度を算出するために異なる指標を用いているので、疲労度を取得するための構成が複雑である。 However, in the fatigue degree meter described in Patent Document 1, the fluctuation degree of the heart rate interval of the person to be measured is used to obtain the degree of brain fatigue, and the degree of physical fatigue is measured when the person to be measured is in a lying position. Since the difference in heart rate from time is used and different indexes are used to calculate the degree of brain fatigue and the degree of physical fatigue, the configuration for acquiring the degree of fatigue is complicated.
　そこで、本開示は、被測定者の疲労を簡易に判定できる、疲労判定装置、疲労判定方法、疲労判定プログラム、及び疲労判定システムを提供することを目的とする。 Therefore, an object of the present disclosure is to provide a fatigue determination device, a fatigue determination method, a fatigue determination program, and a fatigue determination system that can easily determine the fatigue of a person to be measured.
　本開示の一態様の疲労判定装置は、被測定者が活動状態であるか否かを判定する活動判定手段と、前記被測定者が活動状態であると判定された場合の前記被測定者の脈拍数に基づいて前記被測定者の肉体的疲労を判定し、前記被測定者が活動状態でないと判定された場合の前記被測定者の脈拍数に基づいて前記被測定者の精神的疲労を判定する疲労判定手段と、を備える。 The fatigue determination device of one aspect of the present disclosure includes an activity determination means for determining whether or not the person to be measured is in an active state, and the person to be measured when the person to be measured is determined to be in an active state. The physical fatigue of the person to be measured is determined based on the pulse rate, and the mental fatigue of the person to be measured is determined based on the pulse rate of the person to be measured when it is determined that the person to be measured is not in an active state. It is provided with a fatigue determining means for determining.
　本構成によれば、被測定者の活動状態の有無及び被測定者の脈拍数という、同じ指標を用いて被測定者の肉体的疲労及び精神的疲労を判定するので、被測定者の疲労を簡易に判定できる。また、本構成によれば、例えば特許文献１（特開２０１７－６３９６６号公報）のように精神的疲労を心拍のゆらぎを用いて判定する場合と比較して、周波数解析等の処理を削減できるため処理負荷が軽減される。 According to this configuration, the physical and mental fatigue of the measured person is determined using the same index of the presence or absence of the activity state of the measured person and the pulse rate of the measured person. It can be easily determined. Further, according to this configuration, processing such as frequency analysis can be reduced as compared with the case where mental fatigue is determined by using the fluctuation of the heartbeat as in Patent Document 1 (Japanese Patent Laid-Open No. 2017-63966). Therefore, the processing load is reduced.
　上記の疲労判定装置において、前記疲労判定手段は、前記被測定者が活動状態であると判定された第１時間領域に対応する前記被測定者の脈拍数の積分値に基づいて前記肉体的疲労を判定し、前記被測定者が活動状態でないと判定された第２時間領域に対応する前記被測定者の脈拍数の積分値に基づいて前記精神的疲労を判定してもよい。本構成によれば、被測定者の疲労を簡易に判定できる。また、疲労は、生体にかかる負荷の蓄積が関係するため、積分で算出するのが好ましい。 In the fatigue determination device, the fatigue determination means is based on the integrated value of the pulse rate of the person to be measured corresponding to the first time region in which the person to be measured is determined to be in an active state. May be determined, and the mental fatigue may be determined based on the integrated value of the pulse rate of the person to be measured corresponding to the second time region in which the person to be measured is determined not to be in an active state. According to this configuration, the fatigue of the person to be measured can be easily determined. In addition, fatigue is preferably calculated by integration because it is related to the accumulation of load applied to the living body.
　上記の疲労判定装置において、前記疲労判定手段は、前記被測定者が活動状態であると判定された前記第１時間領域に対応する前記被測定者の脈拍数の積分値と前記被測定者の活動量の積分値とによって前記肉体的疲労を判定してもよい。本構成によれば、被測定者の活動量を肉体的疲労に反映できる。 In the fatigue determination device, the fatigue determination means is the integrated value of the pulse rate of the person to be measured and the person to be measured corresponding to the first time region in which the person to be measured is determined to be in an active state. The physical fatigue may be determined based on the integrated value of the amount of activity. According to this configuration, the amount of activity of the person to be measured can be reflected in physical fatigue.
　上記の疲労判定装置において、前記疲労判定手段は、前記被測定者が活動状態であると判定されても、前記被測定者の脈拍数が所定の閾値未満の場合には、前記肉体的疲労が生じているとは判定しなくてもよい。本構成によれば、疲労するほど脈拍数が上昇しない軽い運動を、疲労の判定対象から除外することができる。なお、軽い運動はリラックス効果も期待できるので、疲労として扱うことが好ましくないとも考えられる。 In the fatigue determination device, the fatigue determination means causes the physical fatigue when the pulse rate of the person to be measured is less than a predetermined threshold value even if the person to be measured is determined to be in an active state. It is not necessary to determine that it has occurred. According to this configuration, light exercise in which the pulse rate does not increase to the extent of fatigue can be excluded from the fatigue determination target. Since light exercise can be expected to have a relaxing effect, it may not be preferable to treat it as fatigue.
　本開示の一態様の疲労判定装置は、被測定者が活動状態であるか否かを判定する活動判定手段と、前記活動判定手段による判定結果に応じた所定期間における前記被測定者の脈拍数の積分値に基づいて、前記被測定者の疲労を判定する疲労判定手段と、を備える。本構成によれば、被測定者の脈拍数の積分値に基づいて被測定者の疲労を判定するので、被測定者の疲労を簡易に判定できる。 The fatigue determination device of one aspect of the present disclosure includes an activity determination means for determining whether or not the subject is in an active state, and a pulse rate of the subject for a predetermined period according to the determination result by the activity determination means. It is provided with a fatigue determining means for determining the fatigue of the person to be measured based on the integrated value of. According to this configuration, since the fatigue of the measured person is determined based on the integrated value of the pulse rate of the measured person, the fatigue of the measured person can be easily determined.
　上記の疲労判定装置において、前記疲労判定手段は、前記被測定者の活動終了後から所定時間内における前記被測定者の脈拍数に基づいて、前記被測定者の疲労の回復状態を判定してもよい。ここで、従来では疲労の回復状態は本人等によって主観的で定性的な判定がされていた。一方、本構成によれば、従来のような主観的な疲労の回復状態の判定方法を用いる場合と比較して、疲労の回復状態を定量的に判定できる。 In the fatigue determination device, the fatigue determination means determines the recovery state of fatigue of the person to be measured based on the pulse rate of the person to be measured within a predetermined time after the activity of the person to be measured is completed. May be good. Here, conventionally, the recovery state of fatigue has been subjectively and qualitatively determined by the person or the like. On the other hand, according to this configuration, the recovery state of fatigue can be quantitatively determined as compared with the case of using the conventional method of determining the recovery state of fatigue subjectively.
　上記の疲労判定装置において、前記疲労判定手段は、前記被測定者の睡眠中における前記被測定者の最低脈拍数に基づいて、前記被測定者の疲労の回復状態を判定してもよい。本構成によれば、従来のような主観的な疲労の回復状態の判定方法を用いる場合と比較して、疲労の回復状態を定量的に判定できる。 In the fatigue determination device, the fatigue determination means may determine the recovery state of fatigue of the subject based on the lowest pulse rate of the subject during sleep of the subject. According to this configuration, the recovery state of fatigue can be quantitatively determined as compared with the case of using the conventional method of determining the recovery state of fatigue.
　上記の疲労判定装置において、前記活動判定手段は、前記被測定者が装着する加速度センサの計測結果に基づいて、前記被測定者が活動状態であるか否かを判定してもよい。本構成によれば、被測定者が活動状態であるか否かを簡易に判定できる。 In the fatigue determination device, the activity determination means may determine whether or not the subject is in an active state based on the measurement result of the acceleration sensor worn by the subject. According to this configuration, it is possible to easily determine whether or not the person to be measured is in an active state.
　上記の疲労判定装置において、前記活動判定手段は、前記加速度センサの計測結果に基づく前記被測定者の活動量が所定の閾値以上である場合に、前記被測定者は活動状態であると判定し、前記活動量が前記閾値未満である場合に、前記被測定者は活動状態でないと判定してもよい。本構成によれば、被測定者が活動状態であるか否かを簡易に判定できる。 In the above-mentioned fatigue determination device, the activity determination means determines that the person to be measured is in an active state when the amount of activity of the person to be measured based on the measurement result of the acceleration sensor is equal to or more than a predetermined threshold value. When the amount of activity is less than the threshold value, it may be determined that the person to be measured is not in an active state. According to this configuration, it is possible to easily determine whether or not the person to be measured is in an active state.
　上記の疲労判定装置において、前記疲労判定手段による判定結果を出力手段に出力させる出力制御手段を備えてもよい。本構成によれば、被測定者に疲労の程度を通知することができる。 The fatigue determination device may include an output control means for outputting the determination result by the fatigue determination means to the output means. According to this configuration, it is possible to notify the person to be measured of the degree of fatigue.
　上記の疲労判定装置において、前記活動判定手段は、判定した活動状態を分類し、前記疲労判定手段は、前記活動判定手段による分類の結果に基づいて前記被測定者の疲労を判定してもよい。本構成によれば、被測定者の疲労をより正確に判定できる。 In the fatigue determination device, the activity determination means may classify the determined activity state, and the fatigue determination means may determine the fatigue of the person to be measured based on the result of classification by the activity determination means. .. According to this configuration, the fatigue of the person to be measured can be determined more accurately.
　本開示の一態様の疲労判定方法は、被測定者が活動状態であるか否かを判定する第１工程と、前記被測定者が活動状態であると判定された場合の前記被測定者の脈拍数に基づいて前記被測定者の肉体的疲労を判定し、前記被測定者が活動状態でないと判定された場合の前記被測定者の脈拍数に基づいて前記被測定者の精神的疲労を判定する第２工程と、を有する。 The fatigue determination method of one aspect of the present disclosure includes a first step of determining whether or not the person to be measured is in an active state, and a method of determining the person to be measured when the person to be measured is determined to be in an active state. The physical fatigue of the person to be measured is determined based on the pulse rate, and the mental fatigue of the person to be measured is determined based on the pulse rate of the person to be measured when it is determined that the person to be measured is not in an active state. It has a second step of determining.
　本開示の一態様の疲労判定プログラムは、コンピュータを、被測定者が活動状態であるか否かを判定する活動判定手段と、前記被測定者が活動状態であると判定された場合の前記被測定者の脈拍数に基づいて前記被測定者の肉体的疲労を判定し、前記被測定者が活動状態でないと判定された場合の前記被測定者の脈拍数に基づいて前記被測定者の精神的疲労を判定する疲労判定手段と、して機能させる。 In the fatigue determination program of one aspect of the present disclosure, the computer is used as an activity determination means for determining whether or not the person to be measured is in an active state, and the subject when the person to be measured is determined to be in an active state. The physical fatigue of the person to be measured is determined based on the pulse rate of the measurer, and the mentality of the person to be measured is based on the pulse rate of the person to be measured when it is determined that the person to be measured is not in an active state. It functions as a fatigue determination means for determining target fatigue.
　本開示の一態様の疲労判定システムは、被測定者の活動状態を示す活動情報を測定する活動情報取得手段と、前記被測定者の脈拍数を取得する脈拍数取得手段と、前記活動情報に基づいて、被測定者が活動状態であるか否かを判定する活動判定手段と、前記被測定者が活動状態であると判定された場合の前記被測定者の脈拍数に基づいて前記被測定者の肉体的疲労を判定し、前記被測定者が活動状態でないと判定された場合の前記被測定者の脈拍数に基づいて前記被測定者の精神的疲労を判定する疲労判定手段と、を備える。 The fatigue determination system of one aspect of the present disclosure includes an activity information acquisition means for measuring activity information indicating an activity state of a person to be measured, a pulse rate acquisition means for acquiring the pulse rate of the person to be measured, and the activity information. Based on the activity determination means for determining whether or not the person to be measured is in an active state, and the pulse rate of the person to be measured when the person to be measured is determined to be in an active state, the measurement is performed. A fatigue determination means for determining the physical fatigue of a person and determining the mental fatigue of the person to be measured based on the pulse rate of the person to be measured when it is determined that the person to be measured is not in an active state. Be prepared.
　本開示によれば、被測定者の疲労を簡易に判定できる。 According to the present disclosure, the fatigue of the person to be measured can be easily determined.
図１は、実施形態の疲労判定システムの概略構成図である。FIG. 1 is a schematic configuration diagram of the fatigue determination system of the embodiment. 図２は、被測定者の活動量と脈拍数との関係を示す図であり、（Ａ）は肉体的疲労が生じている場合における活動量と脈拍数との関係を示し、（Ｂ）は精神的疲労が生じている場合における活動量と脈拍数との関係を示す。FIG. 2 is a diagram showing the relationship between the activity amount and the pulse rate of the subject, (A) shows the relationship between the activity amount and the pulse rate when physical fatigue occurs, and (B) is a diagram showing the relationship between the activity amount and the pulse rate. The relationship between the amount of activity and the pulse rate when mental fatigue occurs is shown. 図３は、被測定者の疲労の回復状態を示す図であり、（Ａ）は活動終了後における疲労の回復状態を示し、（Ｂ）は睡眠時の脈拍数に基づく疲労の回復状態を示す。FIG. 3 is a diagram showing the recovery state of fatigue of the subject, (A) shows the recovery state of fatigue after the end of activity, and (B) shows the recovery state of fatigue based on the pulse rate during sleep. .. 図４は、実施形態の疲労判定処理の流れを示すフローチャートである。FIG. 4 is a flowchart showing the flow of the fatigue determination process of the embodiment. 図５は、実施形態の活動状態判定処理の流れを示すフローチャートである。FIG. 5 is a flowchart showing the flow of the activity state determination process of the embodiment. 図６は、実施形態の疲労判定結果を示す模式図である。FIG. 6 is a schematic diagram showing the fatigue determination result of the embodiment.
　以下、図面を参照して本開示の実施形態を説明する。なお、以下に説明する実施形態は、本開示を実施する場合の一例を示すものであって、本開示を以下に説明する具体的構成に限定するものではない。本開示の実施にあたっては、実施形態に応じた具体的構成が適宜採用されてよい。 Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It should be noted that the embodiments described below show an example of the case where the present disclosure is carried out, and the present disclosure is not limited to the specific configuration described below. In carrying out the present disclosure, a specific configuration according to the embodiment may be appropriately adopted.
　図１は、本実施形態の疲労判定システム１０の概略構成図である。疲労判定システム１０は、ウェアラブルセンサ１２、疲労判定装置１４、被測定者が所有する情報処理装置１６を備える。 FIG. 1 is a schematic configuration diagram of the fatigue determination system 10 of the present embodiment. The fatigue determination system 10 includes a wearable sensor 12, a fatigue determination device 14, and an information processing device 16 owned by the person to be measured.
　ウェアラブルセンサ１２は、被測定者が装着することで、被測定者の活動量及び脈拍数の時間変化を測定するものであり、例えば、被測定者の手首にバンドを介して装着され、被測定者によって携帯される。 The wearable sensor 12 is worn by the person to be measured to measure the amount of activity of the person to be measured and the time change of the pulse rate. For example, the wearable sensor 12 is worn on the wrist of the person to be measured via a band and is measured. Carried by a person.
　本実施形態のウェアラブルセンサ１２は、加速度センサ２０、脈拍センサ２２、及び通信部２４を備える。加速度センサ２０は、被測定者の活動状態を示す活動情報を測定する活動情報取得手段として機能し、脈拍センサ２２は、被測定者の脈拍数を取得する脈拍数取得手段として機能する。そして、ウェアラブルセンサ１２は、加速度センサ２０及び脈拍センサ２２による計測結果を通信部２４を介して疲労判定装置１４へ送信する。なお、通信部２４は、一例として、ＷｉＦｉ（登録商標）及びＢｌｕｅＴｏｏｔｈ（登録商標）等の無線通信によって、疲労判定装置１４へ計測結果を送信する。 The wearable sensor 12 of the present embodiment includes an acceleration sensor 20, a pulse sensor 22, and a communication unit 24. The acceleration sensor 20 functions as an activity information acquisition means for measuring the activity information indicating the activity state of the person to be measured, and the pulse sensor 22 functions as a pulse rate acquisition means for acquiring the pulse rate of the person to be measured. Then, the wearable sensor 12 transmits the measurement results of the acceleration sensor 20 and the pulse sensor 22 to the fatigue determination device 14 via the communication unit 24. As an example, the communication unit 24 transmits the measurement result to the fatigue determination device 14 by wireless communication such as WiFi (registered trademark) and BlueTooth (registered trademark).
　図２は、本実施形態の疲労判定装置１４は、サーバ等の情報処理装置であり、ウェアラブルセンサ１２から送信された計測結果に基づいて、被測定者の疲労の状態を判定する。 FIG. 2 shows that the fatigue determination device 14 of the present embodiment is an information processing device such as a server, and determines the fatigue state of the person to be measured based on the measurement result transmitted from the wearable sensor 12.
　本実施形態の疲労判定装置１４は、ＣＰＵ（Central Processing Unit）等で構成される演算部３０、各種プログラム及び各種データ等が予め記憶されたＲＯＭ（Read Only Memory）３２、演算部３０による各種プログラムの実行時のワークエリア等として用いられるＲＡＭ（Random Access Memory）３４、各種プログラム及び各種データを記憶する記憶部３６、及びウェアラブルセンサ１２及び他の情報処理装置１６等との間でデータの送受信を行う通信部３８を備える。 The fatigue determination device 14 of the present embodiment has a calculation unit 30 composed of a CPU (Central Processing Unit) and the like, a ROM (Read Only Memory) 32 in which various programs and various data are stored in advance, and various programs by the calculation unit 30. Data transmission / reception between a RAM (Random Access Memory) 34 used as a work area or the like at the time of execution, a storage unit 36 for storing various programs and various data, a wearable sensor 12, and another information processing device 16 and the like. A communication unit 38 for performing is provided.
　本実施形態の演算部３０は、活動判定部４０、疲労判定部４２、及び判定結果出力制御部４４を備える。本実施形態において、活動判定部４０、疲労判定部４２、及び判定結果出力制御部４４が有する各機能は一例として演算部３０が記憶部３６に記憶されたプログラムを実行することによって実現される。なお、これに限らず、各機能は、疲労判定装置１４が備えるＡＳＩＣ（Application Specific Integrated Circuit）等の個別のハードウェアによって実現されてもよい。 The calculation unit 30 of the present embodiment includes an activity determination unit 40, a fatigue determination unit 42, and a determination result output control unit 44. In the present embodiment, each function of the activity determination unit 40, the fatigue determination unit 42, and the determination result output control unit 44 is realized by executing the program stored in the storage unit 36 by the calculation unit 30 as an example. Not limited to this, each function may be realized by individual hardware such as an ASIC (Application Specific Integrated Circuit) included in the fatigue determination device 14.
　活動判定部４０は、被測定者が活動状態であるか否かを判定する。本実施形態の活動判定部４０は、被測定者が装着するウェアラブルセンサ１２が備える加速度センサ２０の計測結果（加速度）に基づいて、被測定者が活動状態であるか否かを判定する。すなわち、加速度センサ２０の測定結果が被測定者の活動状態を示す活動情報に相当し、活動判定部４０は、この活動情報に基づいて、被測定者が活動状態であるか否かを判定する。 The activity determination unit 40 determines whether or not the person to be measured is in an active state. The activity determination unit 40 of the present embodiment determines whether or not the person to be measured is in an active state based on the measurement result (acceleration) of the acceleration sensor 20 included in the wearable sensor 12 worn by the person to be measured. That is, the measurement result of the acceleration sensor 20 corresponds to the activity information indicating the activity state of the person to be measured, and the activity determination unit 40 determines whether or not the person to be measured is in the activity state based on this activity information. ..
　また、本実施形態の活動判定部４０は、加速度センサ２０の計測結果（活動情報）に基づく被測定者の活動量が所定の閾値以上である場合に、被測定者は活動状態であると判定し、活動量が閾値未満である場合に、被測定者は活動状態でないと判定する。 Further, the activity determination unit 40 of the present embodiment determines that the person to be measured is in an active state when the amount of activity of the person to be measured based on the measurement result (activity information) of the acceleration sensor 20 is equal to or more than a predetermined threshold value. However, when the amount of activity is less than the threshold value, the subject is determined to be inactive.
　より具体的には、活動判定部４０は、一例として、加速度センサ２０の計測結果に対して所定の処理（ノイズ処理や所定の定数の乗算、計測結果の平均化等）を行うことにより、被測定者の活動量を所定時間間隔毎に算出する。すなわち、加速度センサ２０による測定結果が大きい場合には、被測定者の活動量が大きいとされる一方、測定結果が小さい場合には被測定者の活動量が小さいとされる。なお、加速度センサ２０の測定結果そのものを被測定者の活動量とみなしてもよい。 More specifically, the activity determination unit 40, as an example, performs predetermined processing (noise processing, multiplication of predetermined constants, averaging of measurement results, etc.) on the measurement result of the acceleration sensor 20. The amount of activity of the measurer is calculated at predetermined time intervals. That is, when the measurement result by the acceleration sensor 20 is large, the activity amount of the person to be measured is large, while when the measurement result is small, the activity amount of the person to be measured is small. The measurement result itself of the acceleration sensor 20 may be regarded as the amount of activity of the person to be measured.
　そして、活動量が閾値以上の場合を被測定者が活動状態であると判定され、活動量が閾値未満の場合を被測定者が活動していない安静状態と判定される。なお、活動状態とは、被測定者が身体を動かしている場合であり、例えば、肉体的な負荷の低い低運動と肉体的負荷の高い強運動とにも分けられる。一方、安静状態とは、被測定者が身体をほとんど動かしていない場合であり、例えば、被測定者が着座していたり、睡眠していたりする場合である。 Then, when the amount of activity is equal to or greater than the threshold value, it is determined that the subject is in an active state, and when the amount of activity is less than the threshold value, it is determined that the subject is in an inactive resting state. The active state is a case where the subject is moving the body, and can be divided into, for example, low exercise with a low physical load and strong exercise with a high physical load. On the other hand, the resting state is a case where the subject is hardly moving, for example, a case where the subject is sitting or sleeping.
　このように、活動判定部４０は、被測定者が装着した加速度センサ２０の計測結果を用いることで、被測定者が活動状態であるか否かを簡易に判定できる。また、活動判定部４０は、一例として閾値を用いて、被測定者の活動状態を複数の状態に分類する。 In this way, the activity determination unit 40 can easily determine whether or not the subject is in an active state by using the measurement result of the acceleration sensor 20 worn by the subject. Further, the activity determination unit 40 classifies the activity state of the person to be measured into a plurality of states by using a threshold value as an example.
　疲労判定部４２は、活動判定部４０による判定結果とウェアラブルセンサ１２から送信された脈拍センサ２２による計測結果に基づいて、被測定者の疲労状態を判定する。より具体的には、疲労判定部４２は、活動判定部４０による判定結果に応じた所定期間（後述する活動時間領域及び安静時間領域）における被測定者の脈拍数の積分値に基づいて、被測定者の疲労を判定する。 The fatigue determination unit 42 determines the fatigue state of the person to be measured based on the determination result by the activity determination unit 40 and the measurement result by the pulse sensor 22 transmitted from the wearable sensor 12. More specifically, the fatigue determination unit 42 is subject to measurement based on the integrated value of the pulse rate of the person to be measured in a predetermined period (activity time region and rest time region described later) according to the determination result by the activity determination unit 40. Determine the measurer's fatigue.
　本実施形態の疲労判定部４２は、肉体的疲労判定部５０及び精神的疲労判定部５２を備える。 The fatigue determination unit 42 of the present embodiment includes a physical fatigue determination unit 50 and a mental fatigue determination unit 52.
　肉体的疲労判定部５０は、被測定者が活動状態であると判定された場合の被測定者の脈拍数に基づいて被測定者の肉体的疲労を判定する。本実施形態の肉体的疲労判定部５０は、被測定者が活動状態であると判定された活動時間領域に対応する被測定者の脈拍数の積分値に基づいて肉体的疲労を判定する。これにより、本実施形態の肉体的疲労判定部５０は、被測定者の活動状態における脈拍数に基づいた値を肉体的疲労度として、簡易かつ定量的に算出できる。 The physical fatigue determination unit 50 determines the physical fatigue of the person to be measured based on the pulse rate of the person to be measured when it is determined that the person to be measured is in an active state. The physical fatigue determination unit 50 of the present embodiment determines physical fatigue based on the integrated value of the pulse rate of the person to be measured corresponding to the activity time region in which the person to be measured is determined to be in an active state. As a result, the physical fatigue determination unit 50 of the present embodiment can easily and quantitatively calculate a value based on the pulse rate in the active state of the person to be measured as the degree of physical fatigue.
　精神的疲労判定部５２は、被測定者が活動状態でないと判定された場合の被測定者の脈拍数に基づいて被測定者の精神的疲労を判定する。本実施形態の精神的疲労判定部５２は、被測定者が活動状態でないと判定された安静時間領域に対応する被測定者の脈拍数の積分値に基づいて精神的疲労を判定する。これにより、本実施形態の精神的疲労判定部５２は、被測定者の安静状態における脈拍数に基づいた値を精神的疲労度として、簡易かつ定量的に算出できる。 The mental fatigue determination unit 52 determines the mental fatigue of the person to be measured based on the pulse rate of the person to be measured when it is determined that the person to be measured is not in an active state. The mental fatigue determination unit 52 of the present embodiment determines mental fatigue based on the integrated value of the pulse rate of the subject to be measured corresponding to the rest time region in which the subject is determined to be inactive. As a result, the mental fatigue determination unit 52 of the present embodiment can easily and quantitatively calculate a value based on the pulse rate in the resting state of the subject as the mental fatigue degree.
　また、本実施形態の疲労判定部４２は、疲労回復判定部５４を備え、被測定者の疲労の回復状態を判定する。 Further, the fatigue determination unit 42 of the present embodiment includes a fatigue recovery determination unit 54, and determines the fatigue recovery state of the person to be measured.
　また、演算部３０が備える判定結果出力制御部４４は、疲労判定部４２による判定結果（以下「疲労判定結果」という。）を出力手段に出力させる。なお、出力手段は、例えば、被測定者が所有するスマートフォン及びタブレット端末等の情報処理装置１６であり、判定結果出力制御部４４は、通信部３８を介して疲労判定結果を情報処理装置１６へ送信する。 Further, the determination result output control unit 44 included in the calculation unit 30 causes the output means to output the determination result (hereinafter referred to as “fatigue determination result”) by the fatigue determination unit 42. The output means is, for example, an information processing device 16 such as a smartphone or a tablet terminal owned by the person to be measured, and the determination result output control unit 44 transfers the fatigue determination result to the information processing device 16 via the communication unit 38. Send.
　なお、ウェアラブルセンサ１２から疲労判定装置１４へ送信される測定結果には、被測定者毎に異なる識別子が付されている。そして、疲労判定装置１４はこの識別子によって被測定者を判別し、被測定者の疲労判定結果を識別子毎に予め設定された情報処理装置１６へ送信する。 The measurement result transmitted from the wearable sensor 12 to the fatigue determination device 14 is given a different identifier for each person to be measured. Then, the fatigue determination device 14 discriminates the person to be measured by this identifier, and transmits the fatigue determination result of the person to be measured to the information processing device 16 preset for each identifier.
　次に図２を参照して、被測定者の疲労判定について説明する。図２は、被測定者の活動量と脈拍数との関係を示す図である。なお、図２の横軸は時間を示し、縦軸は活動量及び脈拍数を示す。活動量は、ウェアラブルセンサ１２が備える加速度センサ２０による計測結果に相当する。脈拍数は、ウェアラブルセンサ１２が備える脈拍センサ２２による計測結果に相当する。 Next, the fatigue determination of the person to be measured will be described with reference to FIG. FIG. 2 is a diagram showing the relationship between the amount of activity of the subject and the pulse rate. In addition, the horizontal axis of FIG. 2 shows time, and the vertical axis shows the amount of activity and the pulse rate. The amount of activity corresponds to the measurement result by the acceleration sensor 20 included in the wearable sensor 12. The pulse rate corresponds to the measurement result by the pulse sensor 22 included in the wearable sensor 12.
　図２（Ａ）は、肉体的疲労が生じている場合における活動量と脈拍数との関係を示しており、活動量は、低運動及び強運動とされる活動状態と安静状態とに分けられる。 FIG. 2A shows the relationship between the amount of activity and the pulse rate when physical fatigue occurs, and the amount of activity is divided into an active state and a resting state, which are considered to be low exercise and strong exercise. ..
　図２（Ａ）に示されるように、被測定者の脈拍数は、一般的に活動量の大きさに応じて変化する。このため、疲労判定部４２は、被測定者の活動量に基づいて活動状態であると判定された活動時間領域を求める。そして、肉体的疲労判定部５０は、この活動時間領域に対応する被測定者の脈拍数に基づいて被測定者の肉体的疲労を判定する。なお、活動時間領域は、図２（Ａ）において低運動又は強運動と判定された時間領域である。一方、活動時間領域以外の時間領域が安静時間領域である。 As shown in FIG. 2A, the pulse rate of the subject generally changes according to the magnitude of the amount of activity. Therefore, the fatigue determination unit 42 obtains an activity time region determined to be in an active state based on the amount of activity of the person to be measured. Then, the physical fatigue determination unit 50 determines the physical fatigue of the person to be measured based on the pulse rate of the person to be measured corresponding to this activity time region. The activity time region is a time region determined to be low exercise or strong exercise in FIG. 2 (A). On the other hand, the time area other than the activity time area is the rest time area.
　本実施形態の肉体的疲労判定部５０は、上述のように、活動時間領域に対応する被測定者の脈拍数の積分値に基づいて肉体的疲労を判定する。すなわち、肉体的疲労判定部５０により算出された値が大きいと、被測定者の肉体的疲労が大きいと評価される。 As described above, the physical fatigue determination unit 50 of the present embodiment determines physical fatigue based on the integrated value of the pulse rate of the person to be measured corresponding to the activity time region. That is, when the value calculated by the physical fatigue determination unit 50 is large, it is evaluated that the physical fatigue of the person to be measured is large.
　なお、肉体的疲労判定部５０は、活動量の積分値を用いることなく活動時間領域に対応する脈拍数の積分値のみで肉体的疲労を判定してもよいし、活動時間領域に対応する脈拍数の積分値と活動量の積分値の積（又は和）によって肉体的疲労を判定してもよい。 The physical fatigue determination unit 50 may determine physical fatigue only by the integrated value of the pulse rate corresponding to the activity time region without using the integrated value of the activity amount, or the pulse corresponding to the activity time region. Physical fatigue may be determined by the product (or sum) of the integral value of the number and the integral value of the activity amount.
　脈拍数の積分値のみで肉体的疲労を判定すると、被測定者の肉体的疲労の判定結果が被測定者の体力の高低の影響を強く受けることとなる。例えば、同じ運動であっても、被測定者の体力が高い場合には脈拍数の上昇は小さいであろうから肉体的疲労は小さく評価されるものの、被測定者の体力が低い場合には脈拍数の上昇は大きいであろうから肉体的疲労は大きく評価される。 If the physical fatigue is judged only by the integrated value of the pulse rate, the judgment result of the physical fatigue of the person to be measured is strongly influenced by the physical strength of the person to be measured. For example, even with the same exercise, if the physical strength of the subject is high, the increase in the pulse rate will be small, so physical fatigue will be evaluated small, but if the physical strength of the subject is low, the pulse will be evaluated. Physical fatigue is highly valued because the increase in numbers will be large.
　一方、活動時間領域に対応する脈拍数の積分値と活動量の積分値とによって肉体的疲労を判定すると、被測定者の活動量を肉体的疲労に反映できる。すなわち、算出される肉体的疲労に対する被測定者の体力の高低の影響の度合いが小さくなり、活動量が大きければ肉体的疲労は大きく評価され、活動量が小さければ肉体的疲労は小さく評価される。 On the other hand, if the physical fatigue is determined by the integrated value of the pulse rate and the integrated value of the activity amount corresponding to the activity time region, the activity amount of the person to be measured can be reflected in the physical fatigue. That is, the degree of influence of the physical strength of the subject on the calculated physical fatigue is small, and if the amount of activity is large, the physical fatigue is highly evaluated, and if the amount of activity is small, the physical fatigue is evaluated small. ..
　図２（Ｂ）は、精神的疲労が生じている場合における活動量と脈拍数との関係を示す。 FIG. 2B shows the relationship between the amount of activity and the pulse rate when mental fatigue occurs.
　図２（Ｂ）に示されるように、被測定者が活動していない安静時間領域であるにも関わらず、脈拍数が上昇する場合がある。このときには、被測定者が精神的疲労に関係する緊張状態又は興奮状態であることが考えられる。そこで、精神的疲労判定部５２は、安静時間領域に対応する被測定者の脈拍数に基づいて被測定者の精神的疲労を判定する。 As shown in FIG. 2B, the pulse rate may increase even though the subject is in an inactive resting time region. At this time, it is considered that the subject is in a tense state or an excited state related to mental fatigue. Therefore, the mental fatigue determination unit 52 determines the mental fatigue of the person to be measured based on the pulse rate of the person to be measured corresponding to the rest time region.
　本実施形態の精神的疲労判定部５２は、上述のように、安静時間領域に対応する被測定者の脈拍数の積分値に基づいて精神的疲労を判定し、精神的疲労判定部５２によって算出された値が大きいと、精神的疲労が大きいと評価される。 As described above, the mental fatigue determination unit 52 of the present embodiment determines mental fatigue based on the integrated value of the pulse rate of the subject corresponding to the rest time region, and is calculated by the mental fatigue determination unit 52. If the value given is large, it is evaluated that mental fatigue is large.
　なお、肉体的疲労及び精神的疲労の算出に当たり、脈拍数の積分値及び活動量の積分値に対して所定の定数を乗算、除算、加算、又は減算等してもよい。この定数は、例えば、被測定者の年齢及び性別等に基づいて設定される。 In calculating physical fatigue and mental fatigue, a predetermined constant may be multiplied, divided, added, or subtracted from the integrated value of the pulse rate and the integrated value of the activity amount. This constant is set, for example, based on the age and gender of the subject.
　図２を参照して説明したように、本実施形態の疲労判定装置１４は、被測定者が活動状態であると判定された場合の被測定者の脈拍数に基づいて被測定者の肉体的疲労を判定し、被測定者が活動状態でないと判定された場合の被測定者の脈拍数に基づいて被測定者の精神的疲労を判定する。このように、本実施形態の疲労判定装置１４は、被測定者の活動状態の有無及び被測定者の脈拍数という、同じ指標を用いて被測定者の肉体的疲労及び精神的疲労を判定するので、被測定者の疲労を簡易に判定できる。また、本実施形態の疲労判定装置１４は、例えば特許文献１（特開２０１７－６３９６６号公報）のように精神的疲労を心拍のゆらぎを用いて判定する場合と比較して、周波数解析等の処理を削減できるため処理負荷を軽減できる。 As described with reference to FIG. 2, the fatigue determination device 14 of the present embodiment physically determines the person to be measured based on the pulse rate of the person to be measured when it is determined that the person to be measured is in an active state. Fatigue is determined, and the mental fatigue of the subject is determined based on the pulse rate of the subject when it is determined that the subject is not in an active state. As described above, the fatigue determination device 14 of the present embodiment determines the physical fatigue and mental fatigue of the subject using the same index of the presence / absence of the activity state of the subject and the pulse rate of the subject. Therefore, the fatigue of the person to be measured can be easily determined. Further, the fatigue determination device 14 of the present embodiment is used for frequency analysis and the like as compared with the case where mental fatigue is determined by using the fluctuation of the heartbeat as in Patent Document 1 (Japanese Unexamined Patent Publication No. 2017-63966). Since the processing can be reduced, the processing load can be reduced.
　また、本実施形態の疲労判定装置１４は、被測定者の脈拍数の積分値に基づいて被測定者の疲労を判定するので、被測定者の疲労を簡易に判定できる。また、疲労は、生体にかかる負荷の蓄積が関係するため、積分で算出するのが好ましい。 Further, since the fatigue determination device 14 of the present embodiment determines the fatigue of the person to be measured based on the integrated value of the pulse rate of the person to be measured, the fatigue of the person to be measured can be easily determined. In addition, fatigue is preferably calculated by integration because it is related to the accumulation of load applied to the living body.
　次に図３を参照して、被測定者の疲労回復判定について説明する。なお、従来では疲労の回復状態は本人等によって主観的で定性的な判定がされていた。一方、本実施形態の疲労回復判定部５４によれば、従来のような主観的な疲労の回復状態の判定方法を用いる場合と比較して、疲労の回復状態を定量的に判定できる。 Next, the fatigue recovery determination of the person to be measured will be described with reference to FIG. In the past, the recovery state of fatigue was subjectively and qualitatively determined by the person or the like. On the other hand, according to the fatigue recovery determination unit 54 of the present embodiment, the fatigue recovery state can be quantitatively determined as compared with the case where the conventional subjective fatigue recovery state determination method is used.
　図３（Ａ）は、肉体的疲労の回復状態を示す図である。一般的に、運動を行った後の脈拍数は、運動終了と共に徐々に低下する。このとき、疲労が溜まっているほど、脈拍数の低下の度合いが小さい。このように、運動終了後の脈拍数の低下と疲労の回復状態には相関関係がある。なお、図３（Ａ）の例では、脈拍数Ａ１，Ａ２，Ａ３，Ａ４の順に疲労の回復状態が遅い。 FIG. 3A is a diagram showing a recovery state of physical fatigue. In general, the pulse rate after exercising gradually decreases with the end of exercising. At this time, the more fatigue is accumulated, the smaller the degree of decrease in the pulse rate is. Thus, there is a correlation between the decrease in pulse rate after exercise and the recovery state of fatigue. In the example of FIG. 3A, the recovery state of fatigue is slower in the order of pulse rates A1, A2, A3, and A4.
　そこで、本実施形態の疲労回復判定部５４は、被測定者の活動終了から所定時間内（例えば１時間）における被測定者の脈拍数に基づいて、被測定者の疲労の回復状態を判定する。なお、被測定者の活動終了のタイミングは、活動時間領域から安静時間領域に変化したタイミングに相当する。 Therefore, the fatigue recovery determination unit 54 of the present embodiment determines the fatigue recovery state of the person to be measured based on the pulse rate of the person to be measured within a predetermined time (for example, 1 hour) from the end of the activity of the person to be measured. .. The timing of the end of the activity of the subject corresponds to the timing of the change from the activity time region to the rest time region.
　より具体的には、疲労回復判定部５４は、例えば、被測定者の安静状態における脈拍数に基づいた閾値を予め設定し、活動終了から所定時間内における被測定者の脈拍数がこの閾値以上である場合を被測定者の疲労が回復していないと判定する。一方で、疲労回復判定部５４は、所定時間内における被測定者の脈拍数がこの閾値未満となった場合を被測定者の疲労が回復したと判定する。そして疲労回復判定部５４は、この判定結果を疲労回復判定結果として出力する。 More specifically, the fatigue recovery determination unit 54 sets a threshold value in advance based on, for example, the pulse rate of the person to be measured in the resting state, and the pulse rate of the person to be measured within a predetermined time from the end of the activity is equal to or higher than this threshold value. If this is the case, it is determined that the fatigue of the subject has not recovered. On the other hand, the fatigue recovery determination unit 54 determines that the fatigue of the measured person has recovered when the pulse rate of the measured person becomes less than this threshold value within a predetermined time. Then, the fatigue recovery determination unit 54 outputs this determination result as a fatigue recovery determination result.
　また、疲労回復判定部５４は、疲労回復判定結果を被測定者の疲労回復度合いとして定量化する。具体的には、疲労回復判定部５４は、被測定者の疲労が回復していないと判定した場合には、例えば、閾値とそのときの脈拍数との差分に基づく値を疲労回復度として算出する。また、疲労回復判定部５４は、例えば、活動終了後における被測定者の脈拍数が活動時間領域における脈拍数の平均値から減少した度合いを疲労回復度合いとして算出する。また、疲労回復判定部５４は、活動終了後における被測定者の脈拍数が閾値に到達した時間を求めてもよい。 Further, the fatigue recovery determination unit 54 quantifies the fatigue recovery determination result as the degree of fatigue recovery of the person to be measured. Specifically, when the fatigue recovery determination unit 54 determines that the fatigue of the person to be measured has not recovered, for example, a value based on the difference between the threshold value and the pulse rate at that time is calculated as the fatigue recovery degree. do. Further, the fatigue recovery determination unit 54 calculates, for example, the degree to which the pulse rate of the person to be measured decreases from the average value of the pulse rate in the activity time region as the fatigue recovery degree after the activity is completed. Further, the fatigue recovery determination unit 54 may determine the time when the pulse rate of the person to be measured reaches the threshold value after the activity is completed.
　また、この他にも、活動終了後の所定時間内に脈拍数が一定となった場合に被測定者の疲労が回復したと判定し、脈拍数が一定とならなかった場合に被測定者の疲労が回復していないと判定してもよい。 In addition to this, when the pulse rate becomes constant within a predetermined time after the end of the activity, it is determined that the fatigue of the person to be measured has recovered, and when the pulse rate does not become constant, the person to be measured has recovered. It may be determined that the fatigue has not recovered.
　図３（Ｂ）は、睡眠時の脈拍数に基づく疲労の回復状態を示す図であり、睡眠中における最低脈拍数（以下「睡眠中最低脈拍数」という。）の日ごとの変化を示している。そして、睡眠中最低脈拍数が、下がっていないと疲労が取れていないと考えられる。図３（Ｂ）の例では、点Ｂ４，Ｂ５で示される睡眠中最低脈拍数は、点Ｂ１～点Ｂ２，点Ｂ６よりも高く、点Ｂ４，Ｂ５で示される日の睡眠中最低脈拍数では、疲労が回復しきれていないと考えられる。 FIG. 3B is a diagram showing a recovery state of fatigue based on the pulse rate during sleep, and shows daily changes in the minimum pulse rate during sleep (hereinafter referred to as “minimum pulse rate during sleep”). There is. If the minimum pulse rate during sleep does not decrease, it is considered that fatigue is not removed. In the example of FIG. 3B, the lowest sleep pulse rate indicated by points B4 and B5 is higher than that of points B1 to B2 and point B6, and the lowest sleep pulse rate on the day indicated by points B4 and B5. , It is considered that the fatigue has not been fully recovered.
　そこで、本実施形態の疲労回復判定部５４は、被測定者の睡眠中における被測定者の最低脈拍数に基づいて、被測定者の疲労の回復状態を判定する。具体的には、疲労回復判定部５４は、例えば、被測定者の疲労が回復している状態における睡眠中最低脈拍数に基づいた閾値を予め設定し、被測定者の睡眠中最低脈拍数がこの閾値以上の場合を被測定者の疲労が回復していないと判定し、被測定者の睡眠中最低脈拍数がこの閾値未満の場合を被測定者の疲労が回復したと判定する。なお、疲労回復判定部５４は、被測定者の疲労が回復していないと判定した場合には、例えば、閾値と睡眠中最低脈拍数との差分に基づく値を疲労回復度合いとして算出して定量化してもよい。 Therefore, the fatigue recovery determination unit 54 of the present embodiment determines the recovery state of fatigue of the subject based on the minimum pulse rate of the subject during sleep of the subject. Specifically, the fatigue recovery determination unit 54 sets in advance a threshold value based on, for example, the minimum sleep pulse rate in a state where the subject is recovering from fatigue, and the minimum sleep pulse rate of the subject is set. When it is equal to or higher than this threshold, it is determined that the fatigue of the subject has not recovered, and when the minimum sleep pulse rate of the subject is less than this threshold, it is determined that the fatigue of the subject has recovered. When the fatigue recovery determination unit 54 determines that the fatigue of the person to be measured has not recovered, for example, the fatigue recovery determination unit 54 calculates and quantifies a value based on the difference between the threshold value and the lowest pulse rate during sleep as the degree of fatigue recovery. It may be changed.
　上述のように、図３（Ａ）に示される疲労の回復状態は、被測定者の活動毎における疲労の回復状態を示す。一方、図３（Ｂ）に示される疲労の回復状態は、被測定者の日々の疲労の回復状態であり、換言すると蓄積される疲労の回復状態を示す。 As described above, the fatigue recovery state shown in FIG. 3A indicates the fatigue recovery state for each activity of the subject. On the other hand, the fatigue recovery state shown in FIG. 3B is the daily fatigue recovery state of the subject, in other words, the accumulated fatigue recovery state.
　次に、図４を参照して、本実施形態の疲労判定処理を説明する。図４に示される疲労判定処理は、一例として、１分間を単位時間として１分間隔で実行される。なお、単位時間は、１分間に限られず、例えば、３０秒又は２分間といった他の時間とされてもよい。 Next, the fatigue determination process of the present embodiment will be described with reference to FIG. As an example, the fatigue determination process shown in FIG. 4 is executed at 1-minute intervals with 1 minute as a unit time. The unit time is not limited to 1 minute, and may be another time such as 30 seconds or 2 minutes.
　まず、ステップＳ１００では、被測定者が装着しているウェアラブルセンサ１２に備えられる加速度センサ２０が加速度を計測し、ウェアラブルセンサ１２は計測した加速度を疲労判定装置１４へ送信する。 First, in step S100, the acceleration sensor 20 provided in the wearable sensor 12 worn by the person to be measured measures the acceleration, and the wearable sensor 12 transmits the measured acceleration to the fatigue determination device 14.
　次のステップＳ１０２では、ウェアラブルセンサ１２から受信した加速度に基づいて、活動判定部４０が１分間の活動量を算出する。なお、活動判定部４０は、本実施形態のように被測定者の活動量を１分間（すなわち脈拍数の単位時間と同じ）毎に算出してもよいし、脈拍数の単位時間の公倍数毎（例えば６分毎）に算出してもよい。これにより、疲労判定処理は、同時間に取得された活動量と脈拍数とを用いて疲労を判定することができる。 In the next step S102, the activity determination unit 40 calculates the amount of activity for one minute based on the acceleration received from the wearable sensor 12. The activity determination unit 40 may calculate the activity amount of the person to be measured every 1 minute (that is, the same as the unit time of the pulse rate) as in the present embodiment, or every common multiple of the unit time of the pulse rate. It may be calculated every 6 minutes (for example, every 6 minutes). As a result, the fatigue determination process can determine fatigue using the amount of activity and the pulse rate acquired at the same time.
　次のステップＳ１０４では、被測定者が活動状態であるか否かを活動量に基づいて活動判定部４０が判定し、ステップＳ１１０へ移行する。なお、具体的には、活動判定部４０は、被測定者の状態を長期活動状態、短期活動状態、長期安静状態、及び短期安静状態の何れかに判定する。この判定の詳細は、図５を参照して後述する。 In the next step S104, the activity determination unit 40 determines whether or not the person to be measured is in an active state based on the amount of activity, and the process proceeds to step S110. Specifically, the activity determination unit 40 determines the state of the person to be measured as one of a long-term activity state, a short-term activity state, a long-term rest state, and a short-term rest state. The details of this determination will be described later with reference to FIG.
　ステップＳ１０６では、被測定者が装着しているウェアラブルセンサ１２に備えられる脈拍センサ２２が脈拍数を計測し、ウェアラブルセンサ１２は計測した脈拍数を疲労判定装置１４へ送信する。 In step S106, the pulse sensor 22 provided in the wearable sensor 12 worn by the person to be measured measures the pulse rate, and the wearable sensor 12 transmits the measured pulse rate to the fatigue determination device 14.
　次のステップＳ１０８では、疲労判定装置１４が１分間の脈拍数を算出し、ステップＳ１１０へ移行する。この１分間の脈拍数とは、例えば、ウェアラブルセンサ１２から受信した脈拍数の１分間の平均値である。 In the next step S108, the fatigue determination device 14 calculates the pulse rate for one minute, and the process proceeds to step S110. The pulse rate for one minute is, for example, the average value of the pulse rate for one minute received from the wearable sensor 12.
　なお、ステップＳ１００～１０４の処理及びステップＳ１０６，１０８の処理は、並行して実行される。 Note that the processes of steps S100 to 104 and the processes of steps S106 and 108 are executed in parallel.
　ステップＳ１１０では、ステップＳ１０４において被測定者が長期活動状態であると判定されたか否かを疲労判定部４２が判定し、肯定判定の場合はステップＳ１１２へ移行し、否定判定の場合はステップＳ１１６へ移行する。なお、長期活動状態とは、例えば、被測定者が所定時間以上の運動を行っている状態である。 In step S110, the fatigue determination unit 42 determines whether or not the person to be measured is determined to be in a long-term active state in step S104, and if a positive determination is made, the process proceeds to step S112, and if a negative determination is made, the process proceeds to step S116. Transition. The long-term active state is, for example, a state in which the person to be measured is exercising for a predetermined time or longer.
　ステップＳ１１２では、被測定者の脈波数が高いか否かを疲労判定部４２が判定し、肯定判定の場合はステップＳ１１４へ移行し、否定判定の場合はステップＳ１２２へ移行する。なお、脈拍数が高いか否かは、当該脈拍数が予め定められた閾値以上であるか否かによって判定される。 In step S112, the fatigue determination unit 42 determines whether or not the pulse wave number of the person to be measured is high, and if a positive determination is made, the process proceeds to step S114, and if a negative determination is made, the process proceeds to step S122. Whether or not the pulse rate is high is determined by whether or not the pulse rate is equal to or higher than a predetermined threshold value.
　ステップＳ１１４では、肉体的疲労判定部５０が脈拍数を肉体的疲労として積分し、ステップ１２２では、疲労判定部４２が被測定者は疲労していないと判定する。このように、本実施形態の疲労判定部４２は、被測定者が活動状態であると判定しても、被測定者の脈拍数が所定の閾値未満の場合には、肉体的疲労が生じているとは判定しない。これにより、疲労するほど脈拍数が上昇しない軽い運動（低運動）を、疲労の判定対象から除外することができる。なお、軽い運動はリラックス効果も期待できるので、疲労として扱うことが好ましくないとも考えられる。さらに被測定者が高い体力を有している場合には、同じ活動量であっても体力の低い者に比べて疲労が小さいと判定され易くなる。 In step S114, the physical fatigue determination unit 50 integrates the pulse rate as physical fatigue, and in step 122, the fatigue determination unit 42 determines that the person to be measured is not tired. As described above, even if the fatigue determination unit 42 of the present embodiment determines that the subject is in an active state, if the pulse rate of the subject is less than a predetermined threshold value, physical fatigue occurs. It is not determined to be present. As a result, light exercise (low exercise) in which the pulse rate does not increase to the extent of fatigue can be excluded from the fatigue determination target. Since light exercise can be expected to have a relaxing effect, it may not be preferable to treat it as fatigue. Further, when the person to be measured has high physical strength, it is easy to determine that the fatigue is smaller than that of a person with low physical strength even if the amount of activity is the same.
　ステップＳ１１６では、被測定者の脈波数が高いか否かを疲労判定部４２が判定し、肯定判定の場合はステップＳ１２４へ移行し、否定判定の場合はステップＳ１１８へ移行する。なお、脈拍数が高いか否かは、当該脈拍数が予め定められた閾値以上であるか否かによって判定される。ステップＳ１１６の処理で用いる閾値は、ステップＳ１１２で用いる閾値と異なっていてもよい。例えば、長期活動状態であるステップＳ１１２で用いる閾値がステップＳ１１６で用いる閾値よりも高くてもよい。 In step S116, the fatigue determination unit 42 determines whether or not the pulse wave number of the person to be measured is high, and if a positive determination is made, the process proceeds to step S124, and if a negative determination is made, the process proceeds to step S118. Whether or not the pulse rate is high is determined by whether or not the pulse rate is equal to or higher than a predetermined threshold value. The threshold value used in the process of step S116 may be different from the threshold value used in step S112. For example, the threshold value used in step S112, which is a long-term active state, may be higher than the threshold value used in step S116.
　ステップＳ１１８では、ステップＳ１０４において被測定者が長期安静状態であると判定されたか否かを疲労判定部４２が判定し、肯定判定の場合はステップＳ１２２へ移行し、否定判定の場合はステップＳ１２０へ移行する。本実施形態の長期安静状態は、被測定者が睡眠中の状態である。 In step S118, the fatigue determination unit 42 determines whether or not the person to be measured is determined to be in a long-term resting state in step S104, and if a positive determination is made, the process proceeds to step S122, and if a negative determination is made, the process proceeds to step S120. Transition. The long-term resting state of the present embodiment is a state in which the subject is sleeping.
　ステップＳ１２０では、睡眠中の疲労回復判定のための最低脈拍数を疲労回復判定部５４が算出し、ステップＳ１２２では、疲労判定部４２が被測定者は疲労していないと判定する。 In step S120, the fatigue recovery determination unit 54 calculates the minimum pulse rate for determining fatigue recovery during sleep, and in step S122, the fatigue determination unit 42 determines that the person to be measured is not tired.
　ステップＳ１２４では、被測定者が現在は安静状態であるものの所定時間前（ｍ分前）まで長期活動状態であったか否かを疲労判定部４２が判定し、肯定判定の場合はステップＳ１２６へ移行し、否定判定の場合はステップＳ１２８へ移行する。 In step S124, the fatigue determination unit 42 determines whether or not the subject is currently in a resting state but has been in a long-term active state until a predetermined time (m minutes before), and in the case of an affirmative determination, the process proceeds to step S126. , In the case of a negative determination, the process proceeds to step S128.
　ステップＳ１２６では、長期活動状態後の疲労回復判定を疲労回復判定部５４が行う。 In step S126, the fatigue recovery determination unit 54 determines the fatigue recovery after a long-term activity state.
　ステップＳ１２８では、被測定者の活動状態が短期安静状態又は短期活動状態であり、精神的疲労判定部５２が被測定者の脈拍数を精神的疲労として積分する。 In step S128, the activity state of the subject is a short-term resting state or a short-term activity state, and the mental fatigue determination unit 52 integrates the pulse rate of the subject as mental fatigue.
　図５は、ステップＳ１０４で実行される被測定者の活動状態を判定する活動状態判定処理の流れを示すフローチャートである。なお、活動状態判定処理は、活動判定部４０によって実行される。 FIG. 5 is a flowchart showing the flow of the activity state determination process for determining the activity state of the person to be measured, which is executed in step S104. The activity state determination process is executed by the activity determination unit 40.
　まず、ステップＳ２００では、活動量が所定の閾値以上であるか否かを判定し、肯定判定の場合はステップＳ２０２へ移行し、否定判定の場合はステップＳ２１０へ移行する。 First, in step S200, it is determined whether or not the amount of activity is equal to or higher than a predetermined threshold value, and if a positive determination is made, the process proceeds to step S202, and if a negative determination is made, the process proceeds to step S210.
　ステップＳ２０２では、被測定者の状態を活動状態と確定する。 In step S202, the state of the person to be measured is determined to be the active state.
　次のステップＳ２０４では、活動状態が所定時間（ｎ分）以上継続しているか否かを判定し、肯定判定の場合はステップＳ２０６へ移行し、被測定者の状態を長期活動状態と確定する。一方、否定判定の場合はステップＳ２０８へ移行し、被測定者の状態を短期活動状態と確定する。 In the next step S204, it is determined whether or not the activity state has continued for a predetermined time (n minutes) or more, and if it is affirmative, the process proceeds to step S206, and the state of the person to be measured is determined to be a long-term activity state. On the other hand, in the case of a negative determination, the process proceeds to step S208, and the state of the person to be measured is determined to be a short-term activity state.
　ステップＳ２１０では、被測定者の状態を安静状態と確定する。 In step S210, the state of the person to be measured is determined to be a resting state.
　次のステップＳ２１２では、安静状態が所定時間（ｓ分）以上継続しているか否かを判定し、肯定判定の場合はステップＳ２１４へ移行し、被測定者の状態を長期安静状態と確定する。一方、否定判定の場合はステップＳ２１６へ移行し、被測定者の状態を短期安静状態と確定する。 In the next step S212, it is determined whether or not the resting state has continued for a predetermined time (s minutes) or more, and if a positive judgment is made, the process proceeds to step S214, and the state of the person to be measured is determined to be a long-term resting state. On the other hand, in the case of a negative determination, the process proceeds to step S216, and the state of the person to be measured is determined to be a short-term rest state.
　図４，５を参照して説明したように、本実施形態の活動判定部４０は、判定した活動状態を、一例として長期活動状態、短期活動状態、長期安静状態、及び短期安静状態とのように複数に分類する。そして、疲労判定部４２は、活動判定部４０による分類の結果に基づいて被測定者の疲労を判定する。これにより、疲労判定装置１４は、被測定者の疲労をより正確に判定できる。 As described with reference to FIGS. It is classified into multiple categories. Then, the fatigue determination unit 42 determines the fatigue of the person to be measured based on the result of classification by the activity determination unit 40. As a result, the fatigue determination device 14 can more accurately determine the fatigue of the person to be measured.
　次に図６を参照して、判定結果出力制御部４４によって行われる疲労判定結果の出力について説明する。図６は、疲労判定結果を示す模式図であり、図６で示される疲労判定結果が、例えば、被測定者が所有する情報処理装置１６のディスプレイに表示されたり、印刷装置によって記録用紙に印刷される。また、図６に示される模式図と同様の内容がスピーカーから音声出力されてもよい。また、疲労判定結果は、例えば、日々の所定時間に出力されてもよいし、被測定者による情報処理装置１６に対する操作に応じて出力されてもよい。 Next, with reference to FIG. 6, the output of the fatigue determination result performed by the determination result output control unit 44 will be described. FIG. 6 is a schematic diagram showing the fatigue determination result, and the fatigue determination result shown in FIG. 6 is displayed on, for example, the display of the information processing apparatus 16 owned by the subject, or printed on the recording paper by the printing apparatus. Will be done. Further, the same contents as those shown in the schematic diagram shown in FIG. 6 may be output from the speaker as audio. Further, the fatigue determination result may be output, for example, at a predetermined time every day, or may be output according to the operation of the information processing apparatus 16 by the person to be measured.
　図６に示されるように、一例として、疲労度、肉体的疲労度、及び精神的疲労度は複数段階判定され、判定された段階がディスプレイに表示される。すなわち、肉体的疲労判定部５０及び精神的疲労判定部５２は、脈拍数の積分値又は、脈拍数の積分値と活動量の積分値とに基づいて肉体的疲労度と精神的疲労度とを複数段階の何れかに判定する。図６の例では、疲労度は５段階の何れかに判定され、数字が大きいほど被測定者は疲労しているとされる。 As shown in FIG. 6, as an example, the degree of fatigue, the degree of physical fatigue, and the degree of mental fatigue are determined in a plurality of stages, and the determined stages are displayed on the display. That is, the physical fatigue determination unit 50 and the mental fatigue determination unit 52 determine the physical fatigue level and the mental fatigue level based on the integrated value of the pulse rate or the integrated value of the pulse rate and the integrated value of the activity amount. Judge in one of multiple stages. In the example of FIG. 6, the degree of fatigue is determined to be one of five stages, and the larger the number, the more tired the subject is.
　そして、肉体的疲労度と精神的疲労度とのうち大きい値が総合的な疲労度とされる。なお、疲労度、肉体的疲労度、及び精神的疲労度には、各々判定された段階に応じた説明が付される。また、肉体的疲労度及び精神的疲労度の判定結果に応じて、被測定者の疲労回復に効果的とされる生活活動プラン６０が付されてもよい。 The larger value of the physical fatigue and the mental fatigue is the total fatigue. The degree of fatigue, the degree of physical fatigue, and the degree of mental fatigue are each given an explanation according to the determined stage. In addition, a life activity plan 60 that is effective in recovering from fatigue of the person to be measured may be attached according to the determination results of the degree of physical fatigue and the degree of mental fatigue.
　また、図６の例に限らず、疲労判定結果は他の態様で表示されてもよい。例えば、肉体的疲労度及び精神的疲労度を最も高い度合いを１００％とし、最も低い度合いを０％として示してもよい。その一方で、総合的な疲労度を複数段階で示してもよい。また、生活活動プラン６０として、被測定者に対して推奨される食事の種類、食事量、サプリメントの種類、及び被測定者に対して推奨される睡眠時間等が付されてもよい。 Further, not limited to the example of FIG. 6, the fatigue determination result may be displayed in another mode. For example, the highest degree of physical fatigue and mental fatigue may be shown as 100%, and the lowest degree may be shown as 0%. On the other hand, the overall fatigue level may be shown in multiple stages. Further, as the life activity plan 60, the type of meal recommended for the person to be measured, the amount of meal, the type of supplement, the sleeping time recommended for the person to be measured, and the like may be added.
　さらに、疲労判定結果として、定量化された疲労回復度合いが含まれてもよいし、疲労回復度合いとして、図３の模式図と同様の図が出力されてもよい。 Further, the fatigue determination result may include a quantified degree of fatigue recovery, or a diagram similar to the schematic diagram of FIG. 3 may be output as the degree of fatigue recovery.
　ここで、本実施形態の疲労判定システム１０の具体的な使用例を説明する。上記説明では、被測定者が一例として運動等している場合を活動状態として説明したが、以下では被測定者が労働している場合を活動状態として説明する。なお、被測定者は一例として、配送業等を行うトラックの運転者である。 Here, a specific usage example of the fatigue determination system 10 of the present embodiment will be described. In the above description, the case where the person to be measured is exercising or the like is described as an active state, but in the following, the case where the person to be measured is working will be described as an active state. The person to be measured is, for example, a truck driver who engages in a delivery business or the like.
　まず、労働中の運転者がウェアラブルセンサ１２を装着し、ウェアラブルセンサ１２による測定結果が所定時間毎に疲労判定装置１４に送信される。疲労判定装置１４は、受信した測定結果に基づいて被測定者の疲労判定を行う。疲労判定結果は、その日の所定時間（例えば１８時）に運転者が所有する情報処理装置１６に出力されて運転者が確認し、運転者は生活活動プラン６０に応じた食事や睡眠を行う。 First, the driver who is working wears the wearable sensor 12, and the measurement result by the wearable sensor 12 is transmitted to the fatigue determination device 14 at predetermined time intervals. The fatigue determination device 14 determines the fatigue of the person to be measured based on the received measurement result. The fatigue determination result is output to the information processing device 16 owned by the driver at a predetermined time of the day (for example, 18:00) and confirmed by the driver, and the driver eats and sleeps according to the life activity plan 60.
　また、運転者は、睡眠時もウェアラブルセンサ１２を装着し、睡眠中の疲労回復度合いが疲労判定装置１４で判定される。そして、この疲労回復度合いは、配送の運行管理者が操作する情報処理装置へ翌朝に送信される。運行管理者は運転者の疲労回復度合いを参照して、運転者が過労し難い当日の配送プランを作成する。 Further, the driver wears the wearable sensor 12 even during sleep, and the degree of recovery from fatigue during sleep is determined by the fatigue determination device 14. Then, this fatigue recovery degree is transmitted to the information processing device operated by the delivery operation manager the next morning. The operation manager refers to the degree of recovery from the driver's fatigue and creates a delivery plan for the day on which the driver is less likely to overwork.
　以上、本開示を、上記実施形態を用いて説明したが、本開示の技術的範囲は上記実施形態に記載の範囲には限定されない。開示の要旨を逸脱しない範囲で上記実施形態に多様な変更又は改良を加えることができ、該変更又は改良を加えた形態も本開示の技術的範囲に含まれる。 Although the present disclosure has been described above using the above-described embodiment, the technical scope of the present disclosure is not limited to the scope described in the above-described embodiment. Various changes or improvements may be made to the above embodiments without departing from the gist of the disclosure, and the modified or improved forms are also included in the technical scope of the present disclosure.
　例えば、上記実施形態の疲労判定システム１０では、ウェアラブルセンサ１２が備える加速度センサ２０の測定結果に基づいて、疲労判定装置１４によって被測定者が活動状態であるか否かを判定する形態について説明したが、本実施形態はこれに限られない。加速度センサ２０の測定結果に基づいて被測定者の活動状態が判定されるのではなく、被測定者の活動状態が他の情報に基づいて判定されてもよい。例えば、被測定者の作業スケジュールがデジタルデータとして管理されている場合、この作業スケジュールに基づいて、被測定者が活動状態であるか否かが判定されてもよい。 For example, in the fatigue determination system 10 of the above embodiment, a mode of determining whether or not the person to be measured is in an active state by the fatigue determination device 14 based on the measurement result of the acceleration sensor 20 included in the wearable sensor 12 has been described. However, this embodiment is not limited to this. The activity state of the person to be measured may not be determined based on the measurement result of the acceleration sensor 20, but the activity state of the person to be measured may be determined based on other information. For example, when the work schedule of the person to be measured is managed as digital data, it may be determined whether or not the person to be measured is in an active state based on this work schedule.
　また、上記実施形態の疲労判定システム１０では、加速度センサ２０がウェアラブルセンサ１２に備えられる形態について説明したが、本実施形態はこれに限られない。加速度センサ２０は、ウェアラブルセンサ１２とは別体の被測定者が携帯する装置（例えば衣服のポケット等に入れることができる活動量計）に備えられていてもよい。この形態の場合、疲労判定装置１４は、当該加速度センサ２０を備える装置から被測定者の加速度（活動情報）を取得して被測定者が活動状態であるか否かを判定してもよい。これに代えて、当該加速度センサ２０を備える装置が、被測定者が活動状態であるか否かを判定してもよく、疲労判定装置１４は当該加速度センサ２０を備える装置から被測定者が活動状態であるか否かの判定結果を取得してもよい。さらに、当該加速度センサ２０を備える装置が疲労判定装置１４として機能してもよい。 Further, in the fatigue determination system 10 of the above embodiment, the embodiment in which the acceleration sensor 20 is provided in the wearable sensor 12 has been described, but the present embodiment is not limited to this. The accelerometer 20 may be provided in a device (for example, an activity meter that can be put in a pocket of clothes) carried by the person to be measured, which is separate from the wearable sensor 12. In the case of this embodiment, the fatigue determination device 14 may acquire the acceleration (activity information) of the person to be measured from the device provided with the acceleration sensor 20 and determine whether or not the person to be measured is in an active state. Instead, the device equipped with the acceleration sensor 20 may determine whether or not the person to be measured is in an active state, and the fatigue determination device 14 is such that the person to be measured is active from the device equipped with the acceleration sensor 20. The determination result of whether or not it is a state may be acquired. Further, the device provided with the acceleration sensor 20 may function as the fatigue determination device 14.
　また、上記実施形態の疲労判定システム１０では、疲労判定装置１４をウェアラブルセンサ１２とは異なる情報処理装置とする形態について説明したが、本実施形態はこれに限られない。例えば、疲労判定装置１４は、ウェアラブルセンサ１２と一体化され、疲労判定結果及び疲労回復判定結果がサーバに送信され、管理されてもよい。この形態の場合、疲労判定結果等は、ウェアラブルセンサ１２が備えるディスプレイに表示されたり、被測定者が所有する情報処理装置１６に表示される。また、疲労判定装置１４の機能は、被測定者が所有する情報処理装置１６に備えられ、疲労判定結果等が情報処理装置１６に表示されてもよい。 Further, in the fatigue determination system 10 of the above embodiment, an embodiment in which the fatigue determination device 14 is an information processing device different from the wearable sensor 12 has been described, but the present embodiment is not limited to this. For example, the fatigue determination device 14 may be integrated with the wearable sensor 12, and the fatigue determination result and the fatigue recovery determination result may be transmitted to the server and managed. In the case of this form, the fatigue determination result and the like are displayed on the display provided in the wearable sensor 12 or displayed on the information processing device 16 owned by the person to be measured. Further, the function of the fatigue determination device 14 may be provided in the information processing device 16 owned by the person to be measured, and the fatigue determination result or the like may be displayed on the information processing device 16.
　１４　　疲労判定装置
　２０　　加速度センサ
　４０　　活動判定部（活動判定手段）
　４２　　疲労判定部（疲労判定手段）
　４４　　判定結果出力制御部（出力制御手段）

  14 Fatigue judgment device 20 Accelerometer 40 Activity judgment unit (activity judgment means)
42 Fatigue judgment unit (fatigue judgment means)
44 Judgment result output control unit (output control means)

Claims (15)

  1. 　被測定者が活動状態であるか否かを判定する活動判定手段と、
    　前記被測定者が活動状態であると判定された場合の前記被測定者の脈拍数に基づいて前記被測定者の肉体的疲労を判定し、前記被測定者が活動状態でないと判定された場合の前記被測定者の脈拍数に基づいて前記被測定者の精神的疲労を判定する疲労判定手段と、を備える疲労判定装置。     An activity determination means for determining whether or not the person to be measured is in an active state,
    When the physical fatigue of the person to be measured is determined based on the pulse rate of the person to be measured when it is determined that the person to be measured is in an active state, and when it is determined that the person to be measured is not in an active state. A fatigue determination device comprising a fatigue determination means for determining mental fatigue of the subject based on the pulse rate of the subject.
  2. 　前記疲労判定手段は、前記被測定者が活動状態であると判定された第１時間領域に対応する前記被測定者の脈拍数の積分値に基づいて前記肉体的疲労を判定し、前記被測定者が活動状態でないと判定された第２時間領域に対応する前記被測定者の脈拍数の積分値に基づいて前記精神的疲労を判定する、
    請求項１記載の疲労判定装置。     The fatigue determining means determines the physical fatigue based on the integrated value of the pulse rate of the measured person corresponding to the first time region in which the measured person is determined to be in an active state, and determines the physical fatigue, and the measured person is measured. The mental fatigue is determined based on the integrated value of the pulse rate of the subject corresponding to the second time region in which the person is determined not to be active.
    The fatigue determination device according to claim 1.
  3. 　前記疲労判定手段は、前記被測定者が活動状態であると判定された前記第１時間領域に対応する前記被測定者の脈拍数の積分値と前記被測定者の活動量の積分値とによって前記肉体的疲労を判定する、請求項２記載の疲労判定装置。 The fatigue determining means is based on an integrated value of the pulse rate of the measured person and an integrated value of the activity amount of the measured person corresponding to the first time region in which the measured person is determined to be in an active state. The fatigue determination device according to claim 2, wherein the physical fatigue is determined.
  4. 　前記疲労判定手段は、前記被測定者が活動状態であると判定されても、前記被測定者の脈拍数が所定の閾値未満の場合には、前記肉体的疲労が生じているとは判定しない、請求項１から請求項３の何れか１項記載の疲労判定装置。 Even if it is determined that the person to be measured is in an active state, the fatigue determination means does not determine that physical fatigue has occurred if the pulse rate of the person to be measured is less than a predetermined threshold value. , The fatigue determination device according to any one of claims 1 to 3.
  5. 　被測定者が活動状態であるか否かを判定する活動判定手段と、
    　前記活動判定手段による判定結果に応じた所定期間における前記被測定者の脈拍数の積分値に基づいて、前記被測定者の疲労を判定する疲労判定手段と、
    を備える疲労判定装置。     An activity determination means for determining whether or not the person to be measured is in an active state,
    A fatigue determining means for determining the fatigue of the measured person based on an integrated value of the pulse rate of the measured person in a predetermined period according to the determination result by the activity determining means.
    Fatigue determination device.
  6. 　前記疲労判定手段は、前記被測定者の活動終了後から所定時間内における前記被測定者の脈拍数に基づいて、前記被測定者の疲労の回復状態を判定する、請求項１から請求項５の何れか１項記載の疲労判定装置。 The fatigue determining means determines the recovery state of fatigue of the person to be measured based on the pulse rate of the person to be measured within a predetermined time after the activity of the person to be measured is completed, claims 1 to 5. The fatigue determination device according to any one of the above items.
  7. 　前記疲労判定手段は、前記被測定者の睡眠中における前記被測定者の最低脈拍数に基づいて、前記被測定者の疲労の回復状態を判定する、請求項１から請求項６の何れか１項記載の疲労判定装置。 Any one of claims 1 to 6, wherein the fatigue determining means determines a recovery state of fatigue of the measured person based on the minimum pulse rate of the measured person during sleep of the measured person. Fatigue determination device according to the item.
  8. 　前記活動判定手段は、前記被測定者が携帯する加速度センサの計測結果に基づいて、前記被測定者が活動状態であるか否かを判定する、請求項１から請求項７の何れか１項記載の疲労判定装置。 The activity determination means is any one of claims 1 to 7, wherein the activity determination means determines whether or not the subject is in an active state based on the measurement result of the acceleration sensor carried by the subject. The fatigue determination device described.
  9. 　前記活動判定手段は、前記加速度センサの計測結果に基づく前記被測定者の活動量が所定の閾値以上である場合に、前記被測定者は活動状態であると判定し、前記活動量が前記閾値未満である場合に、前記被測定者は活動状態でないと判定する、請求項８記載の疲労判定装置。 When the activity amount of the person to be measured based on the measurement result of the acceleration sensor is equal to or more than a predetermined threshold value, the activity determination means determines that the person to be measured is in an active state, and the activity amount is the threshold value. The fatigue determination device according to claim 8, wherein if the value is less than or equal to, it is determined that the person to be measured is not in an active state.
  10. 　前記疲労判定手段による判定結果を出力手段に出力させる出力制御手段を備える、請求項１から請求項９の何れか１項記載の疲労判定装置。 The fatigue determination device according to any one of claims 1 to 9, further comprising an output control means for outputting the determination result by the fatigue determination means to the output means.
  11. 　前記活動判定手段は、判定した活動状態を分類し、
    　前記疲労判定手段は、前記活動判定手段による分類の結果に基づいて前記被測定者の疲労を判定する、請求項１から請求項１０の何れか１項記載の疲労判定装置。     The activity determination means classifies the determined activity state and classifies the determined activity state.
    The fatigue determination device according to any one of claims 1 to 10, wherein the fatigue determination means determines the fatigue of the person to be measured based on the result of classification by the activity determination means.
  12. 　被測定者が活動状態であるか否かを判定する第１工程と、
    　前記被測定者が活動状態であると判定された場合の前記被測定者の脈拍数に基づいて前記被測定者の肉体的疲労を判定し、前記被測定者が活動状態でないと判定された場合の前記被測定者の脈拍数に基づいて前記被測定者の精神的疲労を判定する第２工程と、
    を有する疲労判定方法。     The first step of determining whether or not the person to be measured is active, and
    When the physical fatigue of the person to be measured is determined based on the pulse rate of the person to be measured when it is determined that the person to be measured is in an active state, and when it is determined that the person to be measured is not in an active state. The second step of determining the mental fatigue of the person to be measured based on the pulse rate of the person to be measured, and
    Fatigue determination method.
  13. 　コンピュータを、
    　被測定者が活動状態であるか否かを判定する活動判定手段と、
    　前記被測定者が活動状態であると判定された場合の前記被測定者の脈拍数に基づいて前記被測定者の肉体的疲労を判定し、前記被測定者が活動状態でないと判定された場合の前記被測定者の脈拍数に基づいて前記被測定者の精神的疲労を判定する疲労判定手段と、して機能させるための疲労判定プログラム。     Computer,
    An activity determination means for determining whether or not the person to be measured is in an active state,
    When the physical fatigue of the person to be measured is determined based on the pulse rate of the person to be measured when it is determined that the person to be measured is in an active state, and when it is determined that the person to be measured is not in an active state. A fatigue determination program for functioning as a fatigue determination means for determining mental fatigue of the subject based on the pulse rate of the subject.
  14. 　被測定者の活動状態を示す活動情報を測定する活動情報取得手段と、
    　前記被測定者の脈拍数を取得する脈拍数取得手段と、
    　前記活動情報に基づいて、被測定者が活動状態であるか否かを判定する活動判定手段と、
    　前記被測定者が活動状態であると判定された場合の前記被測定者の脈拍数に基づいて前記被測定者の肉体的疲労を判定し、前記被測定者が活動状態でないと判定された場合の前記被測定者の脈拍数に基づいて前記被測定者の精神的疲労を判定する疲労判定手段と、を備える疲労判定システム。     An activity information acquisition means for measuring activity information indicating the activity status of the person to be measured, and
    The pulse rate acquisition means for acquiring the pulse rate of the person to be measured, and the pulse rate acquisition means.
    Based on the activity information, an activity determination means for determining whether or not the person to be measured is in an active state, and an activity determination means.
    When the physical fatigue of the person to be measured is determined based on the pulse rate of the person to be measured when it is determined that the person to be measured is in an active state, and when it is determined that the person to be measured is not in an active state. A fatigue determination system comprising a fatigue determination means for determining mental fatigue of the subject based on the pulse rate of the subject.
  15. 　請求項１３に記載の疲労判定プログラムを記憶した、コンピュータ読取可能な非一時的記憶媒体。

          A computer-readable non-temporary storage medium that stores the fatigue determination program according to claim 13.
PCT/JP2021/018352 2020-05-20 2021-05-14 Fatigue determination device, fatigue determination method, fatigue determination program, fatigue determination system, and computer-readable non-transitory recording medium WO2021235333A1 (en)

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