WO2017109916A1 - Dispositif électronique et programme de commande d'émission de lumière - Google Patents

Dispositif électronique et programme de commande d'émission de lumière Download PDF

Info

Publication number
WO2017109916A1
WO2017109916A1 PCT/JP2015/086121 JP2015086121W WO2017109916A1 WO 2017109916 A1 WO2017109916 A1 WO 2017109916A1 JP 2015086121 W JP2015086121 W JP 2015086121W WO 2017109916 A1 WO2017109916 A1 WO 2017109916A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light emission
unit
amount
reflected light
Prior art date
Application number
PCT/JP2015/086121
Other languages
English (en)
Japanese (ja)
Inventor
笠間　晃一朗
Original Assignee
富士通株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士通株式会社 filed Critical 富士通株式会社
Priority to PCT/JP2015/086121 priority Critical patent/WO2017109916A1/fr
Publication of WO2017109916A1 publication Critical patent/WO2017109916A1/fr

Links

Images

Classifications

    • 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

Definitions

  • Embodiments described herein relate generally to an electronic device and a light emission control program.
  • an electronic device for measuring a pulse is attached to a subject (user) and the pulse rate of the user is measured.
  • this electronic device light is emitted to a user's living body (skin and the like), and the user's pulse rate is measured based on a change in the amount of reflected light.
  • the measurement accuracy of the pulse rate may be reduced by reducing the amount of reflected light when the blood flow changes due to the user's exercise state or the like. For example, when the user is exercising, the blood flow volume increases, the amount of light absorbed by hemoglobin in the blood increases, and the amount of reflected light may decrease. When such a decrease in the amount of reflected light occurs, it is difficult to accurately grasp the change in the amount of reflected light, and the pulse rate measurement accuracy is reduced.
  • An object of one aspect of the present invention is to provide an electronic device and a light emission control program that can improve pulse measurement accuracy.
  • the electronic device includes a light emitting unit, a light receiving unit, a pulse calculating unit, and a driving unit.
  • the pulse calculating unit calculates the user's pulse based on the change transition of the reflected light amount obtained by the light receiving unit receiving the reflected light of the light emitted from the light emitting unit.
  • the drive unit adjusts at least one of the light emission intensity of the light emitting unit and the light emission time length per unit time based on the amount of reflected light.
  • pulse measurement accuracy can be improved.
  • FIG. 1 is a block diagram illustrating a configuration example of an electronic device according to the embodiment.
  • FIG. 2 is an explanatory diagram for explaining the light emission condition table.
  • FIG. 3 is an explanatory diagram for explaining an initial calibration matrix.
  • FIG. 4 is an explanatory diagram for explaining the sequential calibration matrix.
  • FIG. 5 is a flowchart illustrating an operation example of the electronic apparatus according to the embodiment.
  • FIG. 6 is a flowchart illustrating the initial calibration process.
  • FIG. 7 is a flowchart illustrating the sequential calibration process.
  • FIG. 1 is a block diagram illustrating a configuration example of an electronic device 1 according to the embodiment.
  • An electronic device 1 illustrated in FIG. 1 is, for example, a computer worn by a user who measures a pulse in daily life.
  • the electronic device 1 is, for example, a wristwatch-type, batch-type, or tag-type terminal, and acquires data related to a user.
  • the user is a subject to be measured for pulse, for example, an on-site worker, a patient undergoing rehabilitation, a training gym user, or the like.
  • the electronic device 1 transmits the acquired data to the external device 2.
  • a smart phone, a personal computer, a server device, or the like can be applied to the external device 2.
  • the external device 2 is a terminal device connected to the electronic device 1 through a BLE (Bluetooth (registered trademark) Low Energy) so as to be able to communicate with each other.
  • the output of data acquired by the electronic device 1 is not limited to that via the external device 2.
  • it may be a display output to a display device (not shown) such as an LCD (Liquid Crystal Display) provided in the electronic apparatus 1.
  • the electronic device 1 includes a control unit 10, an LED 20 (Light Emitting Diode), an optical sensor 30, an acceleration sensor 40, a timer unit 50, a communication unit 60, and a storage unit 70.
  • a control unit 10 an LED 20 (Light Emitting Diode), an optical sensor 30, an acceleration sensor 40, a timer unit 50, a communication unit 60, and a storage unit 70.
  • Control unit 10 controls the operation of electronic device 1.
  • the control unit 10 is a hardware device such as a CPU (Central Processing Unit) or MPU (Micro-Processing Unit), and the program 76 stored in the storage unit 70 is a work area of a RAM (Random Access Memory). And execute sequentially.
  • the control unit 10 has functions as a sensor value acquisition processing unit 101, a drive processing unit 102, a pulse rate calculation unit 103, and a notification unit 104 by executing the program 76 (details will be described later).
  • the control unit 10 may be realized by an integrated circuit such as ASIC (Application Specific Integrated Circuit) or FPGA (Field Programmable Gate Array).
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the LED 20 is a light emitting unit that emits light to a living body such as a user's skin under the control of the control unit 10.
  • the optical sensor 30 is a light receiving unit that receives reflected light reflected by the user from the LED 20. A detection value indicating the amount of reflected light received by the optical sensor 30 is output to the control unit 10.
  • the amount of reflected light from the user obtained by receiving light by the optical sensor 30 changes in response to a change in blood flow caused by the pulsation of the user's blood, that is, a pulse wave indicating the user's pulse.
  • the control unit 10 can calculate the pulse rate of the user, for example, by analyzing the change transition of the reflected light amount that changes corresponding to the pulse wave.
  • the acceleration sensor 40 is a device that detects acceleration.
  • the acceleration sensor 40 is a three-axis acceleration sensor that detects accelerations in the three-axis directions of the X-axis direction, the Y-axis direction, and the Z-axis direction that are orthogonal to each other.
  • the acceleration sensor 40 outputs the detected acceleration data to the control unit 10.
  • any method such as a semiconductor method, a mechanical method, or an optical method can be adopted.
  • the acceleration sensor 40 is a triaxial acceleration sensor that measures acceleration in the triaxial direction, but may be a G (gravation) sensor that detects acceleration in the gravitational direction.
  • the timekeeping unit 50 is an RTC (Real Time Clock) or the like and measures time.
  • the time measuring unit 50 outputs time data indicating the time measured to the control unit 10.
  • the communication unit 60 is a communication device that performs wireless communication under a communication standard such as BLE or wireless LAN (Local Area Network) under the control of the control unit 10. For example, the communication unit 60 communicates with the external device 2 via BLE under the control of the control unit 10.
  • a communication standard such as BLE or wireless LAN (Local Area Network)
  • BLE Wireless Local Area Network
  • the storage unit 70 is realized by, for example, a semiconductor memory element such as a RAM or a flash memory, or a storage device such as an HDD (Hard Disk Drive).
  • the storage unit 70 stores various information such as data acquired from the optical sensor 30 and the acceleration sensor 40, time data measured by the time measuring unit 50, programs used for processing in the control unit 10, and setting data.
  • the storage unit 70 stores a light emission condition table 71, an initial calibration matrix 72, a sequential calibration matrix 73, acquired data 74, a counter 75, and a program 76.
  • the light emission condition table 71 is a table showing the light emission conditions of the LED 20 at the time of pulse measurement. This light emission condition corresponds to the light emission amount of the LED 20 per unit time (for example, one light emission), and is a combination of the current value of the LED 20 and the light emission time length per unit time (for example, one light emission). is there.
  • the current value of the LED 20 corresponds to the emission intensity. Accordingly, the product of the current value of the LED 20 and the light emission time length corresponds to the light emission amount of the LED 20 per time.
  • FIG. 2 is an explanatory diagram for explaining the light emission condition table 71.
  • the light emission condition table 71 indicates the current value and light emission time length of the LED 20 per measurement for each light emission condition that can be set by the LED 20 in the light emission condition numbers 1 to 24.
  • the current value has 4 steps in 5 mA increments in the range of 5 mA to 20 mA.
  • the light emission time length is in six stages in increments of 50 ⁇ sec in the range of 50 ⁇ sec to 300 ⁇ sec.
  • the light emission condition table 71 light emission condition numbers 1 to 24 in descending order of the amount of reflected light detected by the optical sensor 30 for the 24 light emission conditions in the combination of the four current values illustrated and the six light emission time lengths. Is attached and managed.
  • the initial calibration matrix 72 is data indicating the contents of the initial calibration process performed when determining the light emission condition of the LED 20 in the initial setting such as when the user attaches the electronic device 1 to the body.
  • FIG. 3 is an explanatory diagram for explaining the initial calibration matrix 72.
  • the initial calibration matrix 72 includes “number of times”, “execution number”, “execution result is less than threshold (OK)”, and “execution result is greater than or equal to threshold (N / A (Not Applicable))”. Have items.
  • “execution result is less than threshold (OK)” and “execution result is greater than or equal to threshold (N / A)” for the second and subsequent times have items of “previous OK” and “previous N / A”.
  • “Number of times” is an item indicating the number of trials in which the LED 20 is caused to emit light in the initial calibration process and whether or not the amount of reflected light detected by the optical sensor 30 satisfies a predetermined condition.
  • the trial order from the first time to the sixth time is shown.
  • “Performance number” is an item indicating a number (light emission condition number) to be implemented as the light emission condition of the LED 20 in the trial order. For example, in the first trial order, the emission condition number No. 12 is shown to implement. In the second and subsequent times, it is shown that the execution number obtained last time is executed.
  • the execution result is less than the threshold (OK)” is an item indicating an expression for obtaining an execution number when the LED 20 emits light in the trial order and the amount of reflected light detected by the optical sensor 30 satisfies a predetermined condition (OK). . More specifically, an equation for obtaining an execution number when the reflected light quantity detected by the optical sensor 30 in the trial order is less than a threshold value (OK) and the condition is satisfied is shown. For example, when the trial order is the first time, it is shown that the next execution number is obtained by subtracting 6 from the execution number (No. 12) of the current trial order. For the second and subsequent times, the formula for the previous OK and the formula for the previous N / A are shown. For example, both the previous OK and the previous N / A in the second trial order indicate that the next execution number is obtained by subtracting 3 from the execution number in the current trial order.
  • the execution result is equal to or greater than the threshold (N / A)” is an expression for obtaining an execution number when the amount of reflected light detected by the optical sensor 30 does not satisfy a predetermined condition (N / A) by causing the LED 20 to emit light in the trial order. It is an item indicating. More specifically, when the amount of reflected light detected by the optical sensor 30 in the trial order is less than the threshold value (OK), an equation for obtaining the execution number is shown when the condition is not satisfied (N / A). ing. For example, when the trial order is the first time, it is shown that the next execution number is obtained by adding 6 to the execution number (No. 12) of the current trial order.
  • the formula for the previous OK and the formula for the previous N / A are shown.
  • the trial order is the third time in the previous trial, it is indicated that the next execution number is obtained by subtracting 1 from the execution number of the current trial order.
  • the trial order is the previous N / A at the third time, it is indicated that the next execution number is obtained by adding 1 to the execution number of the current trial order.
  • the control unit 10 performs an initial calibration process based on the initial calibration matrix 72, and sets, for example, an execution number obtained through trials up to the sixth time as a light emission condition in the LED 20.
  • the initial calibration matrix 72 illustrated in FIG. 3 is an example, and is not particularly limited to this example.
  • the sequential calibration matrix 73 is data indicating the content of the sequential calibration process performed when the light emission condition of the sequential LED 20 is determined after performing the initial calibration process. This sequential calibration process is performed, for example, at a predetermined cycle (for example, 1 second cycle) when measuring a user's pulse. Further, the sequential calibration process may be performed immediately after the electronic device 1 is activated.
  • FIG. 4 is an explanatory diagram for explaining the sequential calibration matrix 73.
  • the sequential calibration matrix 73 includes items of “case”, “current light emission condition”, and “changed light emission condition”. “Case” is an item indicating seven cases classified by “current light emission conditions”.
  • the “current light emission condition” indicates a current light emission condition (“first condition”) in the LED 20 and a reflected light amount condition (“second condition”) detected by the optical sensor 30 under the light emission condition. It is an item. Specifically, the “first condition” indicates a condition for the current value of the LED 20. In the “second condition”, a condition for the average value of the optical sensor (the amount of reflected light) detected by the optical sensor 30 is shown. In the sequential calibration matrix 73, seven cases are classified according to the combination of the “first condition” and the “second condition” described above.
  • the changed light emission condition is an item indicating the light emission condition to be changed in each case described above. Specifically, an arithmetic expression (light emission condition number ⁇ 1 or light emission condition number +1) for changing from the current light emission condition number is shown. Further, when individually specifying the current value and the light emission time length, the current value of the LED 20 is indicated in the “first condition”, and the light emission time length of the LED 20 is indicated in the “second condition”.
  • the current light emission conditions are “current value is 20 mA” and “light sensor average value ⁇ (light sensor upper limit value / 2)”, and there is a slight decrease in the amount of reflected light. Therefore, in the “changed light emission condition” in the first case, the current value remains at the upper limit, the light emission time length is doubled, and the light emission amount is increased.
  • the current value is set to the upper limit (20 mA)
  • the emission time length is left as it is, and the emission amount is increased.
  • the current light emission conditions are “current value is 15 mA” and “photosensor average value ⁇ (photosensor upper limit value / 2)”, and there is a slight decrease in the amount of reflected light.
  • the adjustment width based on the amount of reflected light is smaller than a predetermined threshold compared to the second case where the current values are the same. Therefore, in the “changed light emission condition” in the third case, the current value is kept as it is (15 mA), the light emission time length is doubled, and the light emission amount is increased.
  • the light emission time length is the upper limit (for example, 300 ⁇ sec)
  • the current value is increased by one level (for example, 20 mA).
  • fine adjustment may be performed with the light emission time length.
  • the current light emission conditions are “current value is 10 mA or less” and “light sensor average value ⁇ (light sensor upper limit value / 2)”, and the amount of reflected light is reduced. Therefore, in the “changed light emission condition” in the fourth case, the current value is doubled, the light emission time length is left as it is, and the light emission amount is increased.
  • the current value is 10 mA or less” and “the optical sensor upper limit value ⁇ the optical sensor average value> 1000 (predetermined value)”, and there is a decrease in the amount of reflected light. Therefore, in the “changed light emission condition” in the fifth case, the light emission condition number is increased by subtracting 1 from the current light emission condition number in the light emission condition numbers arranged in the order of the light emission quantity.
  • the light emission condition number is reduced by adding 1 to the current light emission condition number in the light emission condition numbers arranged in order of the light emission quantity.
  • the current state is maintained without changing the light emission conditions.
  • the control unit 10 sequentially refers to the calibration matrix 73 based on the current light emission condition of the LED 20 and the amount of reflected light detected by the optical sensor 30 (for example, the average value of the optical sensor), so that the seven cases described above. Into one of the cases. And the control part 10 adjusts the light emission conditions of LED20 according to seven cases. That is, in the electronic device 1, the light emission condition of the LED 20 is adjusted in response to a case where the amount of light absorbed by hemoglobin in the blood increases due to the user's exercise or the like and the amount of reflected light decreases. Therefore, the electronic device 1 can obtain a sufficient amount of reflected light, and can accurately detect changes in the amount of reflected light to improve pulse measurement accuracy.
  • the acquisition data 74 is data acquired by the control unit 10 from the optical sensor 30 and the acceleration sensor 40.
  • the control unit 10 stores the data acquired from the optical sensor 30 and the acceleration sensor 40 in the storage unit 70 as the acquisition data 74 in chronological order.
  • control unit 10 causes the LED 20 to emit light, and stores the data about the reflected light amount obtained by receiving the reflected light reflected from the user by the optical sensor 30 in the storage unit 70 as the acquisition data 74. Further, the control unit 10 sequentially stores the acceleration data acquired from the acceleration sensor 40 in the storage unit 70 as acquired data 74.
  • the control unit 10 calculates, for example, the pulse rate of the user based on the acquired data 74 regarding the amount of reflected light stored in chronological order. Further, the control unit 10 acquires the user's exercise state such as the user's exercise intensity, the number of steps per unit time, and the amount of change in the number of steps, based on the acquired data 74 regarding the acceleration stored in time series.
  • the counter 75 is a counter that holds various accumulated values.
  • the counter 75 holds a number counter indicating the number of times various processes have been performed.
  • the counter 75 may hold a cumulative value for the driving time required for the light emission of the LED 20.
  • the counter 75 may hold a cumulative number of steps obtained by counting the number of steps of the user.
  • the program 76 is program data executed by the control unit 10.
  • the control unit 10 provides functions as the sensor value acquisition processing unit 101, the drive processing unit 102, the pulse rate calculation unit 103, and the notification unit 104 by developing the program 76 in the RAM work area and sequentially executing the program 76.
  • the sensor value acquisition processing unit 101 performs various processes on the data acquired by the optical sensor 30, the acceleration sensor 40, and the time measuring unit 50. Specifically, the sensor value acquisition processing unit 101 performs processing for storing data acquired from the optical sensor 30 and the acceleration sensor 40 in the storage unit 70 as the acquisition data 74 in time series order. Further, the sensor value acquisition processing unit 101 obtains a driving time required for light emission of the LED 20 based on the time data timed by the time measuring unit 50. The sensor value acquisition processing unit 101 counts the obtained drive time as a cumulative value in the counter 75.
  • the sensor value acquisition processing unit 101 acquires data indicating the user's exercise state. Specifically, the sensor value acquisition processing unit 101 acquires the number of steps per unit time of the user based on the acquisition data 74 regarding acceleration stored in chronological order. As an example, the sensor value acquisition processing unit 101 acquires the number of steps in a cycle of 10 seconds, and stores the obtained number of steps as a cumulative number of steps in the counter 75. The counter 75 sequentially holds the accumulated number of steps counted every 10 second period.
  • the sensor value acquisition processing unit 101 acquires the exercise intensity of the user based on the acquisition data 74 regarding acceleration stored in time series. Specifically, the sensor value acquisition processing unit 101 holds an arithmetic expression for converting from acceleration to exercise intensity, and calculates exercise intensity by substituting acceleration data into the arithmetic expression. As an example, the sensor value acquisition processing unit 101 calculates exercise intensity at a cycle of 1 second, and obtains an average value of exercise intensity for 10 seconds.
  • the drive processing unit 102 performs a process of driving each unit when measuring the pulse of the user. Specifically, the drive processing unit 102 performs initial calibration processing with reference to the initial calibration matrix 72 based on the amount of reflected light detected by the optical sensor 30, and performs initial setting of the light emission conditions of the LED 20. . Next, the drive processing unit 102 drives the LED 20 under the light emission conditions set by the initial calibration process. In addition, the drive processing unit 102 sequentially performs a calibration process with reference to the sequential calibration matrix 73 based on the amount of reflected light detected by the optical sensor 30, and sequentially updates the light emission conditions of the LEDs 20.
  • the pulse rate calculation unit 103 calculates the user's pulse rate by analyzing the change of the reflected light amount based on the acquired data 74 regarding the reflected light amount stored in chronological order. For example, the pulse rate calculation unit 103 calculates the pulse rate by converting the peak time interval into a unit time, for example, a value per minute, from the change in the amount of reflected light.
  • the notification unit 104 performs processing related to notification (output) of the pulse rate calculated by the pulse rate calculation unit 103. Specifically, the notification unit 104 transmits the pulse rate calculated by the pulse rate calculation unit 103 to the external device 2 via the communication unit 60.
  • FIG. 5 is a flowchart illustrating an operation example of the electronic apparatus 1 according to the embodiment. As shown in FIG. 5, when the process is started when the power is turned on or the user wears the electronic device 1, the drive processing unit 102 activates the LED 20 and the optical sensor 30 (S1).
  • the drive processing unit 102 sequentially tries the light emission conditions that can be set by the LED 20 and obtains the amount of reflected light detected by the optical sensor 30.
  • the drive processing unit 102 rearranges the light emission conditions by assigning the light emission condition numbers 1 to 24 in descending order of the amount of reflected light based on the amount of reflected light for each light emission condition.
  • a table 71 is generated (S2).
  • the drive processing unit 102 performs an initial calibration process with reference to the initial calibration matrix 72 (S3).
  • the drive processing unit 102 drives the LED 20 based on the initial calibration matrix 72 under the light emission condition of a predetermined number (No. 12 in the example of FIG. 3) determined as the execution number in the first process. (S11).
  • the sensor value acquisition processing unit 101 detects the reflected light (the amount of reflected light) due to the light emission of the LED 20 by the optical sensor 30, and stores the detected value in the storage unit 70 as acquisition data 74 (S12).
  • the drive processing unit 102 determines whether or not the detected reflected light amount satisfies a predetermined condition, that is, whether or not the implementation result (reflected light amount) is less than a threshold value (OK) (S13).
  • the drive processing unit 102 determines whether or not the number counter is the initial value (first time) (S14). When the number counter is an initial value (S14: YES), the drive processing unit 102, based on the contents shown in the initial calibration matrix 72 (the first time, the item whose execution result is less than the threshold (OK)), An execution number obtained by subtracting a predetermined number from the executed number is set as the next condition (S15).
  • the drive processing unit 102 determines whether or not the previous time is OK (S16). If it is the last time OK (S16: YES), the drive processing unit 102 determines the execution number based on the item “less than threshold (OK), last time OK” in the corresponding number of times (S17). For example, in the second case, the execution number is determined by subtracting 3 from the current execution number. If it is not the previous OK (S16: NO), the drive processing unit 102 determines the execution number based on the item “less than threshold (OK), previous N / A” in the corresponding number of times (S18). For example, in the second case, the execution number is determined by subtracting 3 from the current execution number.
  • the drive processing unit 102 determines whether or not the number counter is an initial value (first time) (S19). When the number counter is the initial value (S19: YES), the drive processing unit 102 is based on the contents (the first time, the item whose implementation result is equal to or greater than the threshold (N / A)) indicated in the initial calibration matrix 72. In addition, an execution number obtained by adding a predetermined number to the executed number is set as the next condition (S20).
  • the drive processing unit 102 determines whether or not the previous time is OK (S21). When it is the last time OK (S21: YES), the drive processing unit 102 determines the execution number based on the item “above threshold (N / A), last time OK” at the corresponding number of times (S22). For example, in the case of the second time, the execution number is determined by adding 3 to the current execution number. If the previous time is not OK (S21: NO), the drive processing unit 102 determines an execution number based on the item “above threshold (N / A), previous N / A” at the corresponding number of times (S23). For example, in the case of the second time, the execution number is determined by adding 3 to the current execution number.
  • the drive processing unit 102 drives the LED 20 under the light emission conditions of the determined number (S24).
  • the drive processing unit 102 increments the number counter (S25), and determines whether or not the number counter is a predetermined value (for example, the seventh time when performing up to the sixth time) (S26).
  • the drive processing unit 102 If the number counter is not a predetermined value (S26: NO), the drive processing unit 102 returns the process to S12 and continues the initial calibration process. When the number counter is a predetermined value (S26: YES), the drive processing unit 102 ends the initial calibration process.
  • the drive processing unit 102 performs sequential calibration processing with reference to the sequential calibration matrix 73 at a predetermined cycle such as a 1 second cycle (S4).
  • the control unit 10 determines the presence / absence of an attachment state in which the user attaches the electronic device 1 based on the presence / absence of a sudden change in the value detected by the optical sensor 30 (S5).
  • the control unit 10 determines that the device is in the attached state. While the attachment state is maintained (S5: YES), the control unit 10 returns the process to S4 and sequentially performs the calibration process at a predetermined cycle.
  • FIG. 7 is a flowchart illustrating a sequential calibration process.
  • the drive processing unit 102 drives the LED 20 under the light emission conditions currently determined, and detects the reflected light with the optical sensor 30 (S30).
  • the sensor value acquisition processing unit 101 stores the detected reflected light value (output value of the optical sensor 30) in the storage unit 70 as acquisition data 74.
  • the sensor value acquisition processing unit 101 calculates the average value of the output values of the optical sensor 30 based on the acquisition data 74 stored in the storage unit 70 (S31).
  • the light emission conditions determined in the current state in S30 are the light emission conditions determined in the initial calibration process in the first case of the sequential calibration process.
  • the sequential calibration process is performed after the initial calibration process, the light emission conditions are determined by the latest sequential calibration process.
  • the drive processing unit 102 acquires the current light emission condition (S32), and sequentially refers to the calibration matrix 73 on the basis of the acquired current light emission condition and the calculated average value of the photosensors. It is determined which of the first to seventh cases is applicable (S33 to S38).
  • the drive processing unit 102 determines in order from the first case to the sixth case whether or not the current light emission condition and the calculated average value of the photosensor are true (S33 to S38). ). And when it is not applicable in the sixth case (S38: NO), it is assumed that it is the seventh case.
  • the drive processing unit 102 uses the sequential calibration matrix 73 as a light emission condition for doubling the light emission time length while keeping the current value at 20 mA (S39). .
  • the drive processing unit 102 sets light emission conditions based on the sequential calibration matrix 73, with a current value of 20 mA and a light emission time length as it is (S40).
  • the drive processing unit 102 sets light emission conditions for doubling the light emission time length while keeping the current value at 15 mA based on the sequential calibration matrix 73 (S41). ).
  • the drive processing unit 102 sets the light emission condition such that the current value is doubled and the light emission time length remains unchanged (S42).
  • the drive processing unit 102 refers to the light emission condition numbers arranged in order of the light emission amount in the light emission condition table 71, and subtracts 1 from the current light emission condition number as the light emission condition. (S43).
  • the drive processing unit 102 refers to the light emission condition numbers arranged in order of the light emission amount in the light emission condition table 71, and adds the current light emission condition number to 1 as the light emission condition. (S44).
  • the drive processing unit 102 keeps the current light emission conditions without changing the light emission conditions (S45).
  • the electronic device 1 includes the LED 20, the optical sensor 30, the sensor value acquisition processing unit 101, the drive processing unit 102, and the pulse rate calculation unit 103.
  • the sensor value acquisition processing unit 101 acquires the amount of reflected light from the LED 20.
  • the drive processing unit 102 drives the LED 20 by adjusting at least one of the light emission intensity of the LED 20 and the light emission time length per unit time based on the obtained reflected light amount.
  • the light emission condition of the LED 20 is adjusted in response to the case where the amount of light absorbed by hemoglobin in the blood increases due to the user's exercise or the like, and the amount of reflected light decreases. For this reason, the electronic device 1 can obtain a sufficient amount of reflected light, and can accurately measure changes in the amount of reflected light and improve the measurement accuracy of the pulse.
  • each component of the illustrated electronic device 1 does not necessarily need to be physically configured as illustrated.
  • the specific form of distribution / integration of each device is not limited to that shown in the figure, and all or a part thereof may be functionally or physically distributed or arbitrarily distributed in arbitrary units according to various loads or usage conditions. Can be integrated and configured.
  • control unit 10 may be executed entirely or arbitrarily on a CPU (or a microcomputer such as an MPU or MCU (Micro Controller Unit)).
  • various processing functions may be executed in whole or in any part on a program that is analyzed and executed by a CPU (or a microcomputer such as an MPU or MCU) or hardware based on wired logic. Needless to say, it is good.
  • the program 76 may not be stored in the storage unit 70.
  • the program 76 stored in a storage medium readable by the control unit 10 may be read and executed.
  • the storage medium readable by the control unit 10 corresponds to, for example, a portable recording medium such as a CD-ROM or DVD disk, a USB (Universal Serial Bus) memory, a semiconductor memory such as a flash memory, a hard disk drive, or the like.
  • the program 76 may be stored in a device connected to a public line, the Internet, a LAN, or the like, and the control unit 10 may read and execute the program 76 therefrom.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Cardiology (AREA)
  • Pathology (AREA)
  • Medical Informatics (AREA)
  • Physiology (AREA)
  • Biophysics (AREA)
  • Signal Processing (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

La présente invention concerne un dispositif électronique comportant une unité d'émission de lumière, une unité de réception de lumière, une unité de calcul de fréquence de pouls, et une unité de commande. L'unité de calcul de fréquence de pouls calcule la fréquence du pouls d'un utilisateur, sur la base d'une variation des quantités de lumière réfléchie obtenue lorsque l'unité de réception de lumière reçoit la lumière réfléchie de la lumière émise par l'unité d'émission de lumière sur l'utilisateur. L'unité de commande ajuste au moins soit l'intensité d'émission de lumière soit la durée d'émission de lumière par unité de temps, de l'unité d'émission de lumière, sur la base de la quantité de lumière réfléchie.
PCT/JP2015/086121 2015-12-24 2015-12-24 Dispositif électronique et programme de commande d'émission de lumière WO2017109916A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/086121 WO2017109916A1 (fr) 2015-12-24 2015-12-24 Dispositif électronique et programme de commande d'émission de lumière

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/086121 WO2017109916A1 (fr) 2015-12-24 2015-12-24 Dispositif électronique et programme de commande d'émission de lumière

Publications (1)

Publication Number Publication Date
WO2017109916A1 true WO2017109916A1 (fr) 2017-06-29

Family

ID=59089812

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/086121 WO2017109916A1 (fr) 2015-12-24 2015-12-24 Dispositif électronique et programme de commande d'émission de lumière

Country Status (1)

Country Link
WO (1) WO2017109916A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61154639A (ja) * 1984-12-28 1986-07-14 カシオ計算機株式会社 脈拍検出回路
JP2010004972A (ja) * 2008-06-25 2010-01-14 Fujitsu Ltd 光電脈波計測装置および光電脈波計測用プログラム
JP2013202288A (ja) * 2012-03-29 2013-10-07 Seiko Epson Corp 生体情報検出器、生体情報検出装置および生体情報検出方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61154639A (ja) * 1984-12-28 1986-07-14 カシオ計算機株式会社 脈拍検出回路
JP2010004972A (ja) * 2008-06-25 2010-01-14 Fujitsu Ltd 光電脈波計測装置および光電脈波計測用プログラム
JP2013202288A (ja) * 2012-03-29 2013-10-07 Seiko Epson Corp 生体情報検出器、生体情報検出装置および生体情報検出方法

Similar Documents

Publication Publication Date Title
US7980999B2 (en) Body motion discriminating apparatus and activity monitor
JP6464113B2 (ja) エネルギー消費
US9993204B2 (en) Cadence detection based on inertial harmonics
JP6064431B2 (ja) 運動判定プログラム、携帯電子機器、運動判定方法及び情報処理装置
US20130231575A1 (en) Monitoring accumulated activity
US20170056725A1 (en) Walking-load-degree calculation apparatus, maximum-oxygen-consumption calculation apparatus, recording medium, and control method
US20170127992A1 (en) Fatigue-degree monitoring device, fatigue-degree monitoring system, and fatigue-degree determining method
CN110366387B (zh) 测量和评估睡眠质量
KR101038990B1 (ko) 생활습관 교정방법 및 장치
JP2016506526A (ja) 衝撃事象からのヒットカウントモニタリング
JP2018513722A (ja) バイタルサインモニタリングシステム
JP2015133072A (ja) リストバンド型腕動作判定装置
US20160151672A1 (en) Recommending an exercise activity for a user
JP2010253204A (ja) 身体活動検出装置
JP2010240158A (ja) エネルギー消費量計算機
JP6766463B2 (ja) 生体情報処理装置、プログラム及び生体情報処理方法
JP2010165088A (ja) 歩数計、および歩数の計測方法
WO2017109916A1 (fr) Dispositif électronique et programme de commande d'émission de lumière
JP2017113191A (ja) 電子機器及び脈拍数算出プログラム
US20150150491A1 (en) Movement estimation device, and activity tracker
JP3916228B2 (ja) 歩行活動時生体データ推定装置
WO2017109914A1 (fr) Dispositif électronique et programme de détermination de fixation/séparation
WO2017109915A1 (fr) Dispositif électronique et programme de détection de pouls
JP4296115B2 (ja) 電子歩数計
JP2012118724A (ja) 電子機器、歩数計およびプログラム

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15911354

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15911354

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP