WO2017109909A1 - Dispositif électronique et programme de détermination de condition physique - Google Patents

Dispositif électronique et programme de détermination de condition physique Download PDF

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Publication number
WO2017109909A1
WO2017109909A1 PCT/JP2015/086105 JP2015086105W WO2017109909A1 WO 2017109909 A1 WO2017109909 A1 WO 2017109909A1 JP 2015086105 W JP2015086105 W JP 2015086105W WO 2017109909 A1 WO2017109909 A1 WO 2017109909A1
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WO
WIPO (PCT)
Prior art keywords
pulse rate
user
calculated
sensor
resting
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PCT/JP2015/086105
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English (en)
Japanese (ja)
Inventor
笠間　晃一朗
信一 庄井
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富士通株式会社
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Publication date
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Priority to PCT/JP2015/086105 priority Critical patent/WO2017109909A1/fr
Publication of WO2017109909A1 publication Critical patent/WO2017109909A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—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

Definitions

  • the present invention relates to an electronic device and a physical condition determination program.
  • wearable terminals that can be worn on the user's arm, for example, are becoming popular. Since the wearable terminal is used while being worn on the user's body, for example, it is possible to count the user's pulse rate and monitor the state of the user's body. As a pulse sensor that detects a user's pulse, there is one that measures the amount of reflected light.
  • the pulse sensor includes an LED (Light Emitting Diode) that emits light and a PD (Photo Detector) that detects light, and the PD detects the amount of light reflected from the LED toward the human body.
  • LED Light Emitting Diode
  • PD Photo Detector
  • the PD detects the amount of light reflected from the LED toward the human body.
  • the time waveform of the light level detected by the PD is subjected to, for example, FFT (Fast Fourier Transform) processing, and the pulse rate corresponding to the peak of the obtained frequency spectrum is calculated.
  • FFT Fast Fourier Transform
  • a wearable terminal equipped with such a pulse sensor is worn by a worker working at a work site, for example, and may be used for monitoring the load on the worker's body.
  • As an index of the load on the body for example, there is a ratio of the current pulse rate to the maximum pulse rate.
  • the maximum pulse rate is a pulse rate per minute, which is an upper limit value.
  • a value obtained by subtracting age from 220 is set as the maximum pulse rate.
  • the maximum pulse rate is generally a value obtained by subtracting age from 220, individual differences in the maximum pulse rate are not considered, and the body based on the accurate maximum pulse rate is not considered. Monitoring the situation is difficult.
  • the present invention has been made in view of such a point, and an object thereof is to provide an electronic device and a physical condition determination program capable of accurately monitoring a physical condition without taking time and effort.
  • an electronic device disclosed by the present application includes a memory and a processor connected to the memory, and the processor is a sensor that is attached to a user's body and detects a pulse.
  • a first sensor value and a second sensor value are respectively acquired from the sensor and the second sensor for detecting acceleration, and based on the first sensor value acquired when the acquired second sensor value satisfies a predetermined condition.
  • the user's resting pulse rate is calculated, the user's estimated weight is calculated based on the calculated resting pulse rate, and the user's maximum pulse rate is calculated based on the calculated estimated weight and the resting pulse rate.
  • a number is calculated, and a determination value indicating the physical condition of the user is calculated using at least the calculated estimated weight and the maximum pulse rate.
  • the electronic device and the physical condition determination program according to the present invention have an effect that the physical condition can be accurately monitored without taking time and effort.
  • FIG. 1 is a block diagram illustrating a configuration of a mobile terminal device according to an embodiment.
  • FIG. 2 is a block diagram illustrating functions of the processor according to the embodiment.
  • FIG. 3 is a flowchart showing physical condition determination processing according to one embodiment.
  • FIG. 4 is a flowchart illustrating a specific example of the determination value calculation process.
  • FIG. 5 is a diagram illustrating a specific example of the notification information.
  • FIG. 1 is a block diagram illustrating a configuration of a mobile terminal device 100 according to an embodiment.
  • a mobile terminal device 100 illustrated in FIG. 1 includes a wireless communication unit 110, a pulse sensor 120, an acceleration sensor 130, a processor 140, a memory 150, and a display 160.
  • the wireless communication unit 110 is a communication module having a wireless communication function using, for example, Bluetooth (registered trademark), and performs wireless communication with another communication terminal device such as a smartphone. Specifically, for example, the wireless communication unit 110 notifies a determination value indicating the physical condition of the user wearing the mobile terminal device 100 to another communication terminal device by BLE (Bluetooth Low Energy).
  • BLE Bluetooth Low Energy
  • the pulse sensor 120 detects the pulse of the user wearing the mobile terminal device 100.
  • the pulse sensor 120 includes an LED and a PD, detects reflection of light emitted from the LED by the PD, and outputs the obtained reflection amount of light to the processor 140 as a sensor value.
  • the light emitted toward the user's body is reflected by the user's body, and the amount of light reflected at this time varies according to the blood flow in the user's body. For this reason, it is possible to detect a user's pulse from the sensor value of the pulse sensor 120.
  • the acceleration sensor 130 includes a triaxial acceleration sensor, for example, and detects the acceleration in each of the triaxial directions of the mobile terminal device 100. Then, the acceleration sensor 130 outputs the acceleration detected by the triaxial acceleration sensor to the processor 140 as a sensor value.
  • the processor 140 includes, for example, a CPU (Central Processing Unit), an FPGA (Field Programmable Gate Array), or a DSP (Digital Signal Processor), and performs overall control of the mobile terminal device 100. In other words, the processor 140 executes various processes while using the memory 150. Specifically, the processor 140 drives the pulse sensor 120 and the acceleration sensor 130, and based on the pulse sensor value obtained from the pulse sensor 120 and the acceleration sensor value obtained from the acceleration sensor 130, the weight of the user and the maximum pulse Estimate the number. Then, the processor 140 calculates a determination value indicating the physical condition of the user from the estimated weight and the maximum pulse rate, and executes notification processing for notifying the determination value to the user. The function of the processor 140 will be described in detail later.
  • a CPU Central Processing Unit
  • FPGA Field Programmable Gate Array
  • DSP Digital Signal Processor
  • the memory 150 includes, for example, a RAM (Random Access Memory), a ROM (Read Only Memory), a NAND flash memory, and the like, and stores various types of information during processing executed by the processor 140.
  • the display 160 includes a liquid crystal panel, for example, and displays notification information output from the processor 140.
  • the display 160 may be arranged so as to overlap with a touch panel that detects contact.
  • FIG. 2 is a block diagram illustrating functions of the processor 140 according to an embodiment. 2 includes a pulse sensor control unit 141, an acceleration sensor control unit 142, a pulse rate calculation unit 143, an exercise amount calculation unit 144, a resting pulse rate determination unit 145, a weight estimation unit 146, and a maximum pulse rate estimation unit 147. And a physical condition determination unit 148 and a notification processing unit 149.
  • the pulse sensor control unit 141 drives the pulse sensor 120 and acquires the reflection amount of light detected by the pulse sensor 120 at a predetermined cycle as a pulse sensor value. Then, the pulse sensor control unit 141 outputs the acquired pulse sensor value to the pulse rate calculation unit 143.
  • the acceleration sensor control unit 142 drives the acceleration sensor 130 and acquires the acceleration detected by the acceleration sensor 130 at a predetermined cycle as an acceleration sensor value. Then, the acceleration sensor control unit 142 outputs the acquired acceleration sensor value to the momentum calculation unit 144.
  • pulse sensor control unit 141 and the acceleration sensor control unit 142 are included in a sensor driver that controls a sensor included in the mobile terminal device 100.
  • the pulse rate calculation unit 143 filters the waveform of the pulse sensor value with a bandpass filter that transmits a predetermined frequency band, and removes noise outside the band. Then, the pulse rate calculation unit 143 obtains a frequency spectrum of the waveform of the pulse sensor value by performing FFT processing on the waveform after noise removal. Furthermore, the pulse rate calculation unit 143 detects a peak in the frequency spectrum and sets the number of pulses per unit time (for example, 1 minute) having a frequency corresponding to the peak as the pulse rate.
  • the exercise amount calculation unit 144 calculates the user's exercise amount based on the acceleration sensor value. Specifically, the exercise amount calculation unit 144 calculates an exercise amount such as exercise intensity or the number of steps based on the acceleration sensor value. Since the acceleration sensor 130 can detect the movement of the mobile terminal device 100 attached to the user's body, the exercise amount calculation unit 144 can calculate the exercise intensity of the user from the acceleration sensor value. As the exercise intensity, for example, Mets (METs) expressing the exercise intensity with relative numerical values with the exercise intensity at rest being 1.0 METs as a reference can be used. Further, the momentum calculation unit 144 estimates the direction of gravity acceleration from the acceleration sensor value, and extracts the pattern of acceleration change due to walking from the pattern of acceleration change in the direction parallel to the gravity acceleration. Then, the exercise amount calculation unit 144 can calculate the number of steps of the user from the extracted acceleration change pattern by walking.
  • Mets METs
  • the momentum calculation unit 144 estimates the direction of gravity acceleration from the acceleration sensor value, and extracts the pattern of acceleration change due to walking
  • the resting pulse rate determining unit 145 determines whether or not the user is in a resting state based on the amount of exercise calculated by the amount of exercise calculating unit 144. Then, when it is determined that the user is in a resting state, the resting pulse rate determining unit 145 determines the pulse rate calculated by the pulse rate calculating unit 143 as the resting pulse rate. Specifically, for example, the resting pulse rate determination unit 145 continues for 10 minutes or more while the exercise intensity calculated by the exercise amount calculation unit 144 is less than 1.5 METs, and is calculated by the exercise amount calculation unit 144 during this time. It is determined whether or not the number of steps taken is zero.
  • the resting pulse rate determination unit 145 determines that the user is in a resting state. To do. When the user is in a resting state, it is considered that the user's pulse rate has not increased. Therefore, when the user determines that the user is in a stable state, the pulse rate calculating unit 143 determines that the user is in a stable state. The calculated pulse rate is determined as the resting pulse rate.
  • the weight estimation unit 146 estimates the weight of the user based on the resting pulse rate determined by the resting pulse rate determination unit 145 and the stroke volume, which is the amount of blood delivered to the artery by one contraction of the heart.
  • the stroke volume is a fixed value
  • the stroke volume of a general adult at rest is, for example, about 70 ml.
  • Resting pulse rate [bpm] cardiac output [ml / min] / output [ml] (1)
  • the pulse rate at rest is the pulse rate per minute (bpm)
  • the cardiac output is the amount of blood (ml) that the heart beats in one minute.
  • the weight estimation unit 146 calculates the estimated body weight from the resting pulse rate using the above equation (3).
  • the maximum pulse rate estimating unit 147 estimates the maximum pulse rate of the user based on the resting pulse rate determined by the resting pulse rate determining unit 145 and the estimated weight calculated by the weight estimating unit 146. Specifically, the maximum pulse rate estimation unit 147 estimates the maximum pulse rate using the following equation (4).
  • Maximum pulse rate [bpm] Maximum oxygen intake [l / min] x Resting pulse rate [bpm] / 15 (4)
  • the maximum oxygen intake is the maximum oxygen intake per kg body weight, and is obtained by the following equation (5).
  • Maximum oxygen intake [l / min] Maximum oxygen intake with body weight [l / min] / body weight [kg] x 1000 [ml] (5)
  • the maximum oxygen intake taking into account the weight of the above equation (5) can be obtained by, for example, the following regression equation (6).
  • Maximum oxygen uptake [1 / min] taking into account body weight a ⁇ body weight [kg] + b (6)
  • the above equation (4) becomes the following equation (7).
  • Maximum pulse rate [bpm] (25 ⁇ body weight [kg] +947) ⁇ resting pulse rate [bpm] / 15 / body weight [kg] (7)
  • the maximum pulse rate estimation unit 147 estimates the maximum pulse rate of the user by substituting the estimated weight and the resting pulse rate into the above equation (7), for example.
  • weight and the maximum pulse rate estimated by the weight estimation unit 146 and the maximum pulse rate estimation unit 147 do not necessarily depend on the above equations (1) to (7). That is, as long as it can be estimated from the user's pulse rate, resting pulse rate, and amount of exercise, the user's weight and maximum pulse rate may be estimated using other relational expressions.
  • the physical condition determination unit 148 calculates a determination value related to the user's physical condition based on the estimated weight and the maximum pulse rate. Specifically, the physical condition determination unit 148 calculates the load on the user's body using, for example, the maximum pulse rate and the current pulse rate. Moreover, the physical condition determination part 148 calculates the calorie consumption which a user consumes, for example using the maximum pulse rate, the present pulse rate, and a body weight.
  • the notification processing unit 149 When the determination value related to the user's physical condition is calculated by the physical condition determination unit 148, the notification processing unit 149 generates notification information that notifies the determination value, and causes the display 160 to display the generated notification information. At this time, the notification processing unit 149 may include the pulse rate calculated by the pulse rate calculation unit 143 and the exercise amount calculated by the exercise amount calculation unit 144 in the notification information. Further, the notification processing unit 149 may cause the generated communication information to be transmitted from the wireless communication unit 110.
  • the pulse sensor control unit 141 and the acceleration sensor control unit 142 drive the pulse sensor 120 and the acceleration sensor 130, respectively. It starts (step S101).
  • the pulse sensor value is acquired at a predetermined cycle by the pulse sensor control unit 141
  • the acceleration sensor value is acquired at a predetermined cycle by the acceleration sensor control unit 142.
  • the pulse sensor value acquired by the pulse sensor control unit 141 is notified to the pulse rate calculation unit 143, and the pulse rate calculation unit 143 calculates the user's pulse rate (step S102). Specifically, the pulse rate calculation unit 143 performs FFT processing on the time waveform of the pulse sensor value, detects a peak in the obtained frequency spectrum, and calculates a pulse rate corresponding to the detected peak.
  • the acceleration sensor value acquired by the acceleration sensor control unit 142 is notified to the exercise amount calculation unit 144, and the exercise amount calculation unit 144 calculates the exercise intensity of the user (step S103). Also, the number of steps of the user is calculated by the exercise amount calculation unit 144 (step S104).
  • Various methods can be used to calculate the exercise intensity and the number of steps based on the acceleration sensor value. For example, the direction of the gravitational acceleration is estimated from the acceleration sensor value, and the acceleration change pattern in the direction parallel to the gravitational acceleration is used. From this, it is possible to extract the pattern of acceleration change due to walking and calculate the number of steps.
  • the resting pulse rate determining unit 145 refers to the exercise intensity and the number of steps calculated by the exercise amount calculating unit 144, and determines whether or not the user is in a resting state (step S105). That is, the resting pulse rate determination unit 145 determines whether the exercise intensity and the number of steps satisfy a predetermined condition.
  • the predetermined condition is that, for example, the period during which the exercise intensity is less than 1.5 METs continues for 10 minutes or more, and there is no factor that increases the user's pulse rate, such as the number of steps in this period being zero. It is a condition that can be judged.
  • step S105 While it is determined that the exercise intensity and the number of steps do not satisfy the predetermined conditions and the user is not in a resting state (No in step S105), the acquisition of the pulse sensor value and the acceleration sensor value is repeated, and the user is in a resting state. Waiting to become.
  • the pulse rate corresponding to the peak detected by the pulse rate calculating unit 143 at this time is the resting pulse rate.
  • the number is determined (step S106). Since the resting pulse rate determined in this way is based on the amount of exercise of the user, it is a resting pulse rate specific to the user. The resting pulse rate is notified to the weight estimation unit 146 and the maximum pulse rate estimation unit 147, and the user's weight and the maximum pulse rate are estimated.
  • the weight estimation unit 146 substitutes the resting pulse rate notified from the resting pulse rate determination unit 145 into the above equation (3), thereby estimating the weight of the user (step S107). .
  • the weight of the user is estimated as a fixed value such as 70 ml, for example, for the stroke amount of the above formula (3).
  • the maximum pulse rate estimating unit 147 substitutes the resting pulse rate notified from the resting pulse rate determining unit 145 and the weight estimated by the weight estimating unit 146 into the above equation (7), whereby the user Is estimated (step S108).
  • the weight and the maximum pulse rate are estimated based on the resting pulse rate specific to the user, it is possible to accurately estimate the weight and the maximum pulse rate reflecting individual differences. That is, for example, the maximum pulse rate that reflects the physical condition of each user is not the same as the maximum pulse rate of all users with the same age as in the case where the value obtained by subtracting age from 220 is used as the maximum pulse rate. Is estimated.
  • the weight and the maximum pulse rate are estimated from the resting pulse rate based on the user's exercise amount, the user does not need to input information such as age, for example. In other words, the physical condition can be accurately monitored without taking time and effort.
  • the estimated weight and maximum pulse rate are input to the physical condition determination unit 148, and the physical condition determination unit 148 calculates a determination value indicating the physical condition of the user (step S109).
  • the physical condition determination unit 148 may calculate a determination value using the current pulse rate and exercise amount. That is, the pulse rate calculated by the pulse rate calculation unit 143 and the exercise amount calculated by the exercise amount calculation unit 144 may be used for calculating the determination value of the physical condition. A specific example of the determination value calculation will be described later with reference to FIGS.
  • the notification processing unit 149 When the determination value is calculated by the physical condition determination unit 148, the notification processing unit 149 generates notification information that notifies the determination value. Then, the notification processing unit 149 executes notification processing for displaying the notification information on the display 160 and transmitting the notification information from the wireless communication unit 110 (step S110).
  • FIG. 4 is a flowchart showing a specific example of the determination value calculation process in step S109 described above. This determination value calculation process is mainly executed by the physical condition determination unit 148.
  • the pulse rate calculation unit 143 continuously calculates the pulse rate (step S201).
  • the calculated pulse rate is input to the physical condition determination unit 148, and a load level applied to the user's body is calculated as a determination value (step S202). That is, the load level corresponding to the ratio of the current pulse rate to the user's maximum pulse rate is calculated.
  • the load level may be a numerical value at a stage to which the current pulse rate belongs, for example, from a user's resting pulse rate to a maximum pulse rate is divided into five stages.
  • the calculated load level is included in the notification information by the notification processing unit 149 and displayed on the display 160. That is, for example, as shown in FIG. 5A, the current user load level is notified to the user.
  • the exercise intensity is continuously calculated by the exercise amount calculation unit 144 (step S203).
  • the calculated exercise intensity is input to the physical condition determination unit 148, and calories consumed by the user are calculated as a determination value (step S204). That is, the user's calorie consumption is calculated by multiplying the Mets value indicating exercise intensity, the user's weight, and the predetermined coefficient.
  • the calorie consumption may be calculated based on the above-described load level and weight instead of the Mets value.
  • the calculated calorie consumption is included in the notification information by the notification processing unit 149 and displayed on the display 160. That is, for example, as shown in FIG. 5B, the user's calorie consumption is notified to the user.
  • the user's momentum is calculated based on the acceleration sensor value, and the pulse rate when the user is in a resting state is determined as the resting pulse rate. Then, the user's weight and the maximum pulse rate are estimated based on the resting pulse rate, and a determination value indicating the user's physical condition is calculated from the weight and the maximum pulse rate. Therefore, it is possible to calculate the resting pulse rate and the maximum pulse rate that reflect the user's physical condition without inputting information about the user, and it is possible to accurately monitor the physical condition without taking time and effort.
  • the user's physical condition is determined by the mobile terminal device attached to the user's body.
  • the physical condition determination process may be performed by another information processing apparatus. good. That is, the mobile terminal device worn on the user's body transmits the sensor value obtained by the pulse sensor 120 and the acceleration sensor 130 from the wireless communication unit 110 to another information processing device, and receives the sensor value. May execute the physical condition determination process.
  • the sensor value may be transferred to a predetermined server or the like via the Internet, for example, and the physical condition determination process may be executed in the predetermined server.
  • this program can be stored in a computer-readable recording medium and introduced into the computer.
  • the computer-readable recording medium include a portable recording medium such as a CD-ROM, a DVD disk, and a USB memory, and a semiconductor memory such as a flash memory.

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Abstract

L'invention concerne un dispositif électronique présentant une mémoire (150) et un processeur (140) connecté à la mémoire (150). Le processeur (140) : obtient une première valeur de capteur et une seconde valeur de capteur, respectivement, à partir d'un premier capteur (120) qui détecte une fréquence de pouls et d'un second capteur (130) qui détecte une accélération, lesdits capteurs étant attachés au corps d'un utilisateur ; calcule la fréquence de pouls au repos d'un utilisateur, sur la base d'une première valeur de capteur obtenue lorsqu'une seconde valeur de capteur obtenue remplit une condition prescrite ; calcule le poids du corps estimé d'un utilisateur, sur la base de la fréquence de pouls au repos calculée ; calcule une fréquence de pouls maximale pour l'utilisateur, sur la base du poids du corps estimé calculé et de la fréquence de pouls au repos ; et utilise au moins le poids du corps estimé calculé et la fréquence de pouls maximale et calcule une valeur de détermination indiquant la condition physique de l'utilisateur.
PCT/JP2015/086105 2015-12-24 2015-12-24 Dispositif électronique et programme de détermination de condition physique WO2017109909A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005063155A (ja) * 2003-08-13 2005-03-10 Osaka Gas Co Ltd 心臓循環器系モデル及び心臓負担評価装置
JP2009142333A (ja) * 2007-12-11 2009-07-02 Sharp Corp 運動支援装置、運動支援方法、運動支援システム、運動支援制御プログラム、および記録媒体
JP2012235920A (ja) * 2011-05-12 2012-12-06 Hitachi Ltd 生体データ処理システム、及び、生体データ処理方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005063155A (ja) * 2003-08-13 2005-03-10 Osaka Gas Co Ltd 心臓循環器系モデル及び心臓負担評価装置
JP2009142333A (ja) * 2007-12-11 2009-07-02 Sharp Corp 運動支援装置、運動支援方法、運動支援システム、運動支援制御プログラム、および記録媒体
JP2012235920A (ja) * 2011-05-12 2012-12-06 Hitachi Ltd 生体データ処理システム、及び、生体データ処理方法

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