WO2022208838A1 - 生体情報処理装置、情報処理システム、生体情報処理方法、および記録媒体 - Google Patents
生体情報処理装置、情報処理システム、生体情報処理方法、および記録媒体 Download PDFInfo
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Definitions
- the present disclosure relates to a biological information processing device and the like that processes sensor data measured while walking.
- Non-Patent Document 1 discloses the influence of stride length on sole pressure and joint moment.
- Non-Patent Document 2 discloses the independent effects of walking speed and stride length on stability and fall risk.
- motor functions such as knee joint load and walking stability can be evaluated by verifying measurement data such as stride length and walking speed.
- Patent Document 1 discloses a biometric data management system that mutually calibrates biometric data measured at a hospital or at home.
- the system of Patent Literature 1 includes a first biometric device and a second biometric device that measure biometric data of a subject.
- a first biometric device is used in a hospital.
- the second biometric device is used in an environment such as a home that is different from the first biometric device.
- the system of Patent Literature 1 preliminarily stores the error between the subject's biological data measured by the first biometric device and the subject's biological data measured by the second biometric device as a calibration value.
- the system of Patent Literature 1 calibrates biological data of a subject with calibration values.
- biometric data measured in different environments such as hospitals and homes are calibrated with pre-stored calibration values.
- the biometric data is calibrated with a constant calibration value, so the biometric data cannot be accurately calibrated unless the difference between the environments is clarified in advance.
- motor functions such as walking, the body cannot be kept stationary.
- An object of the present disclosure is to provide a biological information processing apparatus and the like capable of correcting differences in biological data for evaluating motor function measured in different environments.
- a biological information processing apparatus calculates daily measurement values of common measurement items that are common to facility measurement data measured at a facility, from daily measurement data measured using sensor data related to user's leg movements. and a correcting unit for correcting facility measured values of common measurement items stored in advance based on the extracted daily measured values of common measurement items.
- a computer determines common measurement items common to facility measurement data measured in a facility, from daily measurement data measured using sensor data related to user's leg movements. A daily measured value is extracted, and the facility measured value of the common measured item stored in advance is corrected based on the extracted daily measured value of the common measured item.
- a program is a process of extracting daily measured values of common measurement items that are common to facility measurement data measured at a facility, from daily measurement data measured using sensor data related to user's leg movements. and a process of correcting the facility measured values of the common measurement items stored in advance based on the extracted daily measured values of the common measurement items.
- a biological information processing device or the like capable of correcting differences in biological data for evaluating motor function measured in different environments.
- FIG. 1 is a block diagram showing an example of the configuration of an information processing system according to a first embodiment
- FIG. FIG. 2 is a conceptual diagram showing an arrangement example of measuring devices in the information processing system according to the first embodiment
- FIG. 3 is a conceptual diagram for explaining a coordinate system set in the measuring device of the information processing system according to the first embodiment
- FIG. 2 is a conceptual diagram for explaining a human body surface used in explaining the information processing system according to the first embodiment
- FIG. 2 is a conceptual diagram for explaining a walking cycle used in explaining the information processing system according to the first embodiment
- FIG. 4 is a conceptual diagram for explaining an example of daily measurement items of the information processing system according to the first embodiment
- FIG. 7 is a conceptual diagram for explaining another example of daily measurement items of the information processing system according to the first embodiment;
- FIG. 7 is a conceptual diagram for explaining still another example of daily measurement items of the information processing system according to the first embodiment;
- It is a block diagram showing an example of composition of a measuring device of an information processing system concerning a 1st embodiment.
- 1 is a block diagram showing an example of a configuration of a biological information processing device of an information processing system according to a first embodiment;
- FIG. It is a figure which shows an example of the daily measurement data measured by the biological information processing apparatus of the information processing system which concerns on 1st Embodiment.
- It is an example of facility measurement values of common measurement items stored in the biological information processing device of the information processing system according to the first embodiment.
- FIG. 5 is an example of frequency distribution of daily measured values of stride length measured by the biological information processing device of the information processing system according to the first embodiment. It is an example of the frequency distribution of daily measured values of walking speed measured by the biological information processing device of the information processing system according to the first embodiment. It is an example of correction values of measured values of common measurement items calculated by the biological information processing device of the information processing system according to the first embodiment.
- 4 is a flowchart for explaining an example of the operation of the biological information processing device of the information processing system according to the first embodiment; It is a block diagram which shows an example of a structure of the information processing system which concerns on 2nd Embodiment. FIG.
- FIG. 11 is a block diagram showing an example of the configuration of a biological information processing device of the information processing system according to the second embodiment; It is an example of facility measurement values of common measurement items and facility measurement items stored in the biological information processing device of the information processing system according to the second embodiment. It is an example of the correction value of the facility measurement value of the facility measurement item calculated by the biological information processing device of the information processing system according to the first embodiment.
- 9 is a flowchart for explaining an example of the operation of the biological information processing device of the information processing system according to the second embodiment;
- FIG. 10 is a conceptual diagram for explaining application example 1 of the information processing system according to the second embodiment;
- FIG. 10 is a conceptual diagram for explaining application example 1 of the information processing system according to the second embodiment;
- FIG. 10 is a conceptual diagram for explaining application example 1 of the information processing system according to the second embodiment;
- FIG. 10 is a conceptual diagram for explaining application example 1 of the information processing system according to the second embodiment;
- FIG. 12 is a conceptual diagram for explaining application example 2 of the information processing system according to the second embodiment;
- FIG. 11 is a block diagram showing an example of the configuration of a biological information processing apparatus according to a third embodiment;
- FIG. It is a block diagram showing an example of hardware constitutions which perform control and processing of each embodiment.
- the information processing system of the present embodiment measures daily measurement data (also referred to as daily measurement data) using sensor data acquired by sensors installed on the user's feet.
- the information processing system of the present embodiment extracts measurement items (also referred to as common measurement items) common to measurement data (also referred to as facility measurement data) measured in facilities such as sports gyms and hospitals from the measured daily measurement data. Extract.
- Daily measurement data has a large amount of data, but is shallow data with a limited amount of information.
- the facility measurement data is deep data with a small amount of data but a large amount of information.
- the information processing system of this embodiment corrects facility measurement data based on daily measurement data with a large amount of data.
- FIG. 1 is a block diagram showing an example of the configuration of an information processing system 10 of this embodiment.
- the information processing system 10 includes a measuring device 11 and a biological information processing device 15 .
- the measuring device 11 and the biological information processing device 15 may be connected by wire or wirelessly.
- the measuring device 11 and the biological information processing device 15 may be configured as a single device.
- the information processing system 10 may be configured with only the biological information processing device 15 excluding the measurement device 11 from the configuration of the information processing system 10 .
- the measuring device 11 is installed on the foot.
- the measuring device 11 measures acceleration (also referred to as spatial acceleration) and angular velocity (also referred to as spatial angular velocity) as physical quantities relating to the movement of the user's feet wearing footwear such as shoes.
- the physical quantities related to the movement of the foot measured by the measuring device 11 include not only acceleration and angular velocity, but also velocity, angle, and position (trajectory) calculated by integrating acceleration and angular velocity.
- the measuring device 11 converts the measured physical quantity into digital data (also called sensor data).
- the measuring device 11 transmits the converted sensor data to the biological information processing device 15 .
- Sensor data such as acceleration and angular velocity generated by the measuring device 11 are also called walking parameters.
- walking parameters include velocity, angle, trajectory, etc. calculated by integrating acceleration and angular velocity.
- the walking parameters include the angle of the sole of the foot (also called the plantar angle) with respect to the ground.
- the measuring device 11 is implemented by an inertial measuring device including, for example, an acceleration sensor and an angular velocity sensor.
- An example of an inertial measurement device is an IMU (Inertial Measurement Unit).
- the IMU includes a triaxial acceleration sensor and a triaxial angular velocity sensor.
- the measuring device 11 may include sensors other than the acceleration sensor and the angular velocity sensor.
- Other examples of inertial measurement devices include VG (Vertical Gyro), AHRS (Attitude Heading), and GPS/INS (Global Positioning System/Inertial Navigation System).
- FIG. 2 is a conceptual diagram showing an example of installing the measuring device 11 inside the shoe 100.
- the measuring device 11 is installed at a position on the back side of the arch of the foot.
- the measuring device 11 is installed on an insole inserted into the shoe 100 .
- the measuring device 11 is installed on the bottom surface of the shoe 100 .
- the measuring device 11 is embedded in the main body of the shoe 100 .
- the measurement device 11 may be removable from the shoe 100 or may not be removable from the shoe 100 .
- the measuring device 11 may be installed at a position other than the back side of the arch as long as it can acquire sensor data regarding the movement of the foot.
- the measuring device 11 may be installed on a sock worn by the user or an accessory such as an anklet worn by the user. Moreover, the measuring device 11 may be attached directly to the foot or embedded in the foot.
- FIG. 2 shows an example in which measuring devices 11 are installed on shoes 100 of both feet. The measuring device 11 may be installed on at least one leg. By installing the measurement devices 11 on the shoes 100 of both feet, evaluation can be performed based on the sensor data measured by the measurement devices 11 installed on the left and right feet.
- FIG. 3 is for explaining a local coordinate system (x-axis, y-axis, z-axis) set in the measuring device 11 and a world coordinate system (X-axis, Y-axis, Z-axis) set with respect to the ground. It is a conceptual diagram of.
- the world coordinate system (X-axis, Y-axis, Z-axis)
- the lateral direction of the user is the X-axis direction (right direction is positive)
- the front direction of the user (moving direction) is the Y-axis direction ( Forward is positive)
- the direction of gravity is set to be the Z-axis direction (vertically upward is positive).
- a local coordinate system consisting of x-direction, y-direction, and z-direction with reference to the measuring device 11 is set.
- the biological information processing device 15 receives sensor data from the measuring device 11 .
- the biological information processing device 15 measures daily measurement data using the received sensor data.
- the daily measurement data includes stride length, walking speed, maximum dorsiflexion angle, maximum plantarflexion angle, foot lift height, circling amount, and foot angle.
- the biological information processing device 15 extracts daily measurement data values (also called daily measurement values) of common measurement items that are common to the facility measurement data from the measured daily measurement data.
- Common measurement items are set in advance according to the motor function to be evaluated. For example, stride length and walking speed are set as common measurement items.
- the biological information processing device 15 extracts daily measured values of stride length and walking speed, which are common measurement items.
- Daily measurement data other than stride length and walking speed may be set as common measurement items.
- the biological information processing device 15 calculates correction values for the extracted common measurement items.
- the biological information processing apparatus 15 may store daily measurement values of common measurement items extracted from daily measurement data measured based on sensor data, and facility measurement data values of common measurement items stored in advance (facility measurement values ) is calculated as a correction value.
- the biological information processing apparatus 15 calculates, as a correction value, the deviation between the representative value in the distribution of the daily measurement values of the common measurement items extracted from the daily measurement data and the previously stored facility measurement values of the common measurement items. .
- the biological information processing device 15 outputs correction values for common measurement items.
- the biological information processing device 15 outputs correction values for facility measurement values of common measurement items.
- the biological information processing device 15 outputs the correction value to a terminal device (not shown) that can be viewed at the facility where the facility measurement data was measured.
- the correction value output to the terminal device is displayed on the screen of that terminal device.
- a person who checks the correction value displayed on the screen of the terminal device can recognize the difference between the facility measurement data and the daily measurement data.
- the biological information processing device 15 may be configured to output correction values of common measurement items to a display device (not shown) or an external system.
- FIG. 4 is a conceptual diagram for explaining the plane set for the human body (also called the human body plane).
- a sagittal plane that divides the body left and right a coronal plane that divides the body front and back, and a horizontal plane that divides the body horizontally are defined.
- the world coordinate system and the local coordinate system match in the upright state as shown in FIG.
- rotation in the sagittal plane with the x-axis as the rotation axis is roll
- rotation in the coronal plane with the y-axis as the rotation axis is pitch
- rotation in the horizontal plane with the z-axis as the rotation axis is yaw.
- the rotation angle in the sagittal plane with the x-axis as the rotation axis is the roll angle
- the rotation angle in the coronal plane with the y-axis as the rotation axis is the pitch angle
- the rotation angle in the horizontal plane with the z-axis as the rotation axis is defined as the yaw angle.
- clockwise rotation in the sagittal plane is defined as positive
- counterclockwise rotation in the sagittal plane is defined as negative.
- FIG. 5 is a conceptual diagram for explaining the step cycle based on the right foot.
- the step cycle based on the left foot is also the same as the right foot.
- the horizontal axis of FIG. 5 is a walking cycle normalized by taking one walking cycle of the right foot as 100%, starting from when the heel of the right foot touches the ground and ending when the heel of the right foot touches the ground. is.
- One walking cycle of one leg is roughly divided into a stance phase in which at least part of the sole of the foot is in contact with the ground, and a swing phase in which the sole of the foot is separated from the ground.
- the stance phase is further subdivided into early stance T1, middle stance T2, final stance T3, and early swing T4.
- the swing phase is further subdivided into early swing phase T5, middle swing phase T6, and final swing phase T7.
- FIG. 5 is an example, and does not limit the periods constituting the one-step cycle, the names of those periods, and the like.
- FIG. 5(a) represents an event (heel strike) in which the heel of the right foot touches the ground (HS: Heel Strike).
- FIG. 5(b) represents an event in which the toe of the left foot leaves the ground while the sole of the right foot is in contact with the ground (OTO: Opposite Toe Off).
- FIG. 5(c) represents an event (heel rise) in which the heel of the right foot is lifted while the sole of the right foot is in contact with the ground (HR: Heel Rise).
- (d) of FIG. 5 is an event in which the heel of the left foot touches the ground (opposite heel strike) (OHS: Opposite Heel Strike).
- FIG. 5(a) represents an event (heel strike) in which the heel of the right foot touches the ground (HS: Heel Strike).
- FIG. 5(b) represents an event in which the toe of the left foot leaves the ground while the sole of the right foot is in contact with the ground (OTO: Opposite To
- FIG. 5(e) represents an event (toe off) in which the toe of the right foot leaves the ground while the sole of the left foot is in contact with the ground (TO: Toe Off).
- (f) of FIG. 5 represents an event (Foot Adjacent) in which the left foot and the right foot cross each other while the sole of the left foot is in contact with the ground (FA: Foot Adjacent).
- (g) of FIG. 5 represents an event (tibia vertical) in which the tibia of the right foot becomes almost vertical to the ground while the sole of the left foot is in contact with the ground (TV: Tibia Vertical).
- (h) of FIG. 5 represents an event (heel strike) in which the heel of the right foot touches the ground (HS: Heel Strike).
- (h) in FIG. 5 corresponds to the end point of the walking cycle starting from (a) in FIG. 5 and also to the starting point of the next walking cycle. It should be noted that FIG. 5 is an example, and does not limit the events that occur accompany
- FIG. 6 is a conceptual diagram for explaining walking parameters calculated by the biological information processing apparatus 15. As shown in FIG. FIG. 6 shows right foot step length S R , left foot step length S L , stride length T, shunt amount C, and foot angle F.
- the right foot step length S R is the difference between the Y coordinates of the right and left heels when the left foot sole is in contact with the ground and the right heel is swung in the direction of travel and is on the ground. be.
- the left foot step length S L is the difference between the Y coordinates of the heel of the left foot and the heel of the right foot when transitioning from a state in which the sole of the right foot is on the ground to a state in which the heel of the left foot is swung in the direction of travel and is on the ground.
- the stride length T is the sum of the right foot step length S R and the left foot step length S L .
- the shunt amount C is the degree of shunt of the foot in the horizontal plane (in the XY plane).
- the position of the measuring device 11 when the sole of one foot is on the ground is connected to the position of the measuring device 11 when the sole of the foot swung in the direction of travel transitions to the state of being on the ground.
- the amount of shunt C is defined as the transition from the state where the sole of one foot touches the ground to the state where the sole of the foot swung out in the direction of movement touches the ground again. is the distance between the measuring device 11 and the traveling axis at the timing farthest from .
- the foot angle F is the angle between the center line of the foot and the axis of travel (Y-axis) when the sole of the foot is in contact with the ground.
- FIG. 7 is a conceptual diagram for explaining the plantar angle.
- the plantar angle is the angle of the plantar to the ground (XY plane).
- the plantar angle is defined as negative when the toes point up (dorsiflexion) and positive when the toes point down (plantar flexion).
- the angle at which the absolute value of the plantar angle in the dorsiflexion state is maximized in one walking cycle is called the maximum dorsiflexion angle.
- the angle at which the absolute value of the plantar angle in the plantar flexion state is maximized in one walking cycle is called the maximum plantar flexion angle.
- the biological information processing device 15 calculates the plantar angle using the acceleration in the X-axis direction and the acceleration in the Y-axis direction. For example, the biological information processing device 15 calculates the plantar angle around each of the X-, Y-, and Z-axes by integrating the values of the angular velocities around those axes. Acceleration and angular velocity data contain high and low frequency noise that varies in various directions. Therefore, a low-pass filter and a high-pass filter are applied to the acceleration data and the angular velocity data to remove high frequency components and low frequency components. If the high frequency component and the low frequency component are removed, the accuracy of the sensor data, which is prone to noise, can be improved. The accuracy of the sensor data can also be improved by applying a complementary filter to each of the acceleration data and the angular velocity data and taking a weighted average. Note that the measuring device 11 may be configured to measure the plantar angle.
- FIG. 8 is a conceptual diagram for explaining the leg lift height.
- the foot lift height is the height of the sole with respect to the ground.
- FIG. 8 shows a transition from a position where the sole touches the ground (broken line) to a position where the sole is raised to the ground at a maximum height (solid line) in a single step cycle.
- the leg lift height H corresponds to the position of the measuring device 11 in the Z direction. That is, the foot lift height H substantially matches the height in the Z direction of the sole of the user's foot when walking while wearing the shoe 100 .
- the leg lift height H can be calculated by second-order integration of the acceleration in the Z direction.
- the measuring device 11 is installed at an initial height d inside the shoe 100 .
- the height of the sole in the Z direction changes by Hd.
- the height of the sole of the shoe 100 also corresponds to Hd.
- Hd In the evaluation of motor function based on the height of the leg raised, it may be preferable to use Hd as the height of the raised leg.
- FIG. 9 is a block diagram showing an example of the detailed configuration of the measuring device 11. As shown in FIG.
- the measuring device 11 has an acceleration sensor 111 , an angular velocity sensor 112 , a control section 113 and a transmission section 115 .
- the measuring device 11 also includes a power supply (not shown).
- the acceleration sensor 111 is a sensor that measures acceleration in three axial directions (also called spatial acceleration).
- the acceleration sensor 111 outputs the measured acceleration to the controller 113 .
- the acceleration sensor 111 can be a sensor of a piezoelectric type, a piezoresistive type, a capacitive type, or the like. It should be noted that the sensor used for the acceleration sensor 111 is not limited in its measurement method as long as it can measure acceleration.
- the angular velocity sensor 112 is a sensor that measures angular velocities around three axes (also called spatial angular velocities).
- the angular velocity sensor 112 outputs the measured angular velocity to the controller 113 .
- the angular velocity sensor 112 can be a vibration type sensor or a capacitance type sensor. It should be noted that the sensor used for the angular velocity sensor 112 is not limited in its measurement method as long as it can measure the angular velocity.
- the control unit 113 acquires acceleration in three axial directions from the acceleration sensor 111 .
- the control unit 113 acquires angular velocities about three axes from the angular velocity sensor 112 .
- the control unit 113 converts the acquired acceleration and angular velocity into digital data.
- the control unit 113 outputs converted digital data (also called sensor data) to the transmission unit 115 .
- the sensor data includes at least acceleration data converted from analog data into digital data and angular velocity data converted from analog data into digital data.
- the acceleration data converted into digital data includes acceleration vectors in three axial directions.
- the angular velocity data converted into digital data includes angular velocity vectors in three axial directions. Acceleration data and angular velocity data are associated with acquisition times of those data.
- control unit 113 may be configured to output sensor data obtained by adding corrections such as mounting error, temperature correction, linearity correction, etc. to the acquired acceleration data and angular velocity data. Also, the control unit 113 may be configured to measure the angle data about the three axes and the plantar angle using the acquired acceleration data and angular velocity data.
- control unit 113 is a microcomputer or microcontroller that controls and processes the measuring device 11 .
- the control unit 113 has a CPU (Central Processing Unit), RAM (Random Access Memory), ROM (Read Only Memory), flash memory, and the like.
- Control unit 113 controls acceleration sensor 111 and angular velocity sensor 112 to measure angular velocity and acceleration.
- the control unit 113 performs AD conversion (Analog-to-Digital Conversion) on physical quantities (analog data) such as measured angular velocity and acceleration, and stores the converted digital data in a flash memory.
- Physical quantities (analog data) measured by acceleration sensor 111 and angular velocity sensor 112 may be converted into digital data by acceleration sensor 111 and angular velocity sensor 112, respectively.
- Digital data stored in the flash memory is output to the transmission unit 115 at a predetermined timing.
- the transmission unit 115 acquires sensor data from the control unit 113.
- the transmission unit 115 transmits the acquired sensor data to the biological information processing device 15 .
- the transmitter 115 may transmit the sensor data to the biological information processing device 15 via a cable such as a cable, or may transmit the sensor data to the biological information processing device 15 via wireless communication.
- the transmission unit 115 is configured to transmit sensor data to the biological information processing device 15 via a wireless communication function (not shown) conforming to standards such as Bluetooth (registered trademark) and WiFi (registered trademark). be.
- the communication function of the transmission unit 115 may conform to standards other than Bluetooth (registered trademark) and WiFi (registered trademark).
- FIG. 10 is a block diagram showing an example of the configuration of the biological information processing device 15. As shown in FIG. The biological information processing device 15 has a measurement unit 151 , an extraction unit 152 , a storage unit 153 , a correction unit 155 and an output unit 157 .
- the measurement unit 151 acquires sensor data from the measurement device 11 installed on the footwear worn by the pedestrian.
- the measurement unit 151 measures daily measurement data using the acquired sensor data.
- the measurement unit 151 measures daily measurement data such as stride length, walking speed, maximum dorsiflexion angle, maximum plantarflexion angle, foot lift height, shunt amount, and foot angle.
- An example of a method of measuring daily measurement data by the measurement unit 151 will be given below.
- the measurement unit 151 transforms the coordinate system of the acquired sensor data from the local coordinate system to the world coordinate system.
- the local coordinate system (x-axis, y-axis, z-axis) and the world coordinate system (X-axis, Y-axis, Z-axis) coincide.
- the measurement unit 151 converts the sensor data acquired by the measurement device 11 from the local coordinate system (x-axis, y-axis, z-axis) of the measurement device 11 to the world coordinate system (X-axis, Y-axis, Z-axis). Convert.
- the measurement unit 151 uses the sensor data converted into the world coordinate system to generate time-series data accompanying the walking of the user wearing the footwear on which the measurement device 11 is installed.
- the measurement unit 151 extracts walking waveform data for one step cycle from the generated time-series data.
- the measurement unit 151 generates time-series data such as spatial acceleration and spatial angular velocity.
- the measurement unit 151 also integrates the spatial acceleration and the spatial angular velocity to generate time-series data such as the spatial velocity, the spatial angle, the sole angle, and the spatial trajectory.
- the timing at which the measurement unit 151 generates the time-series data can be set arbitrarily.
- the measurement unit 151 generates time-series data at predetermined timings set in accordance with a general walking cycle or a user-specific walking cycle. For example, the measurement unit 151 generates time-series data at predetermined time intervals set in accordance with the walking cycle. For example, the measurement unit 151 continues to generate time-series data while the user continues walking. For example, the measurement unit 151 may generate time-series data at a specific time.
- the measuring unit 151 detects a walking event of the user walking while wearing footwear on which the measuring device 11 is installed, from the generated walking waveform data. For example, the measurement unit 151 extracts features of each walking event from a walking waveform of physical quantities related to foot movement. For example, the measurement unit 151 detects the timing of the extracted feature of each walking event as the timing of each walking event.
- the measuring unit 151 measures, as the stride length, the moving distance in the Y direction of the measuring device 11 at the timing of successive heel strikes or successive toe-offs.
- the measurement unit 151 measures walking speed by integrating acceleration in the Y direction.
- the measurement unit 151 measures the angle at which the absolute value of the plantar angle is maximum in the dorsiflexion direction as the maximum dorsiflexion angle.
- the measuring unit 151 measures the angle at which the absolute value of the plantar angle is maximum in the plantar flexion direction as the maximum plantar flexion angle.
- the measurement unit 151 calculates the leg lift height by performing second-order integration of the Z-direction acceleration.
- the measurement unit 151 obtains the locus of the position in the X direction by second-order integration of the acceleration in the X direction for one step cycle.
- the measurement unit 151 measures the distance at which the distance between the position in the X direction and the traveling axis is maximum as the amount of division.
- the measurement unit 151 measures the angle between the center line of the foot and the axis of travel (Y-axis) when the sole is in contact with the ground as the foot angle. It should be noted that the method of measuring the daily measurement data given here is an example, and the method of measuring the daily measurement data by the measurement unit 151 is not limited.
- the measuring unit 151 may detect toe-off, heel contact, and foot crossing as walking events, and measure the stride length based on these walking events. Foot crossing corresponds to the timing at which the toe of one foot passes through the position of the midpoint between the toe and heel of the other foot.
- the measuring unit 151 extracts the section between the toe-off and the heel contact as the walking waveform of the Y-direction trajectory for one step from the walking waveform of the Y-direction trajectory for one step cycle.
- the measurement unit 151 calculates the absolute value of the difference between the spatial position at foot crossing and the spatial position at toe-off using the walking waveform of the Y-direction trajectory for one step.
- the absolute value of the difference between the spatial position at foot crossing and the spatial position at toe-off corresponds to the left foot step length S L (also referred to as the first step length) with the left foot forward and the right foot back.
- the measuring unit 151 also calculates the absolute value of the difference between the spatial position at the timing of foot crossing and the spatial position at heel contact using the walking waveform of the Y-direction trajectory for one step.
- the absolute value of the difference between the spatial position at the timing of foot crossing and the spatial position at heel contact corresponds to the right foot step length S R (also referred to as the second step length) with the right foot forward and the left foot backward.
- the sum of the right foot step length S R and the left foot step length S L corresponds to the stride length. According to this method, the step length of each foot can be measured individually.
- the extraction unit 152 extracts daily measurement values of common measurement items with facility measurement data from the daily measurement data measured by the measurement unit 151 .
- the extraction unit 152 extracts daily measured values of stride length and walking speed as common measurement items.
- the extraction unit 152 extracts, from the daily measurement data continuously measured by the measurement unit 151, the representative value of the daily measurement values of the common measurement items with the facility measurement data.
- FIG. 11 is a diagram summarizing the frequency distribution of daily measurement values measured over a plurality of dates.
- FIG. 11 includes frequency distributions of daily measurements of stride length, gait speed, maximum dorsiflexion angle, maximum plantarflexion angle, foot lift height, circling amount, and foot angle.
- scales on the horizontal and vertical axes are omitted.
- the stride length and walking speed are common measurement items.
- the extraction unit 152 extracts the representative values of the daily measurement values of stride length and walking speed as common measurement items.
- the storage unit 153 stores facility measurement values of common measurement items.
- the storage unit 153 stores facility measurement values of stride length and walking speed.
- FIG. 12 shows an example of facility measurement values stored in the storage unit 153.
- the storage unit 153 stores a facility-measured stride length value of 147 cm (centimeters) and a facility-measured walking speed value of 4.8 m/s (meters per second).
- the facility measurement values of the common measurement items stored in the storage unit 153 can be updated at any timing.
- facility measurement values of common measurement items stored in the storage unit 153 are updated according to data transmitted from facilities such as gyms and hospitals.
- a method for updating the facility measurement values of the common measurement items stored in the storage unit 153 is not particularly limited.
- the correction unit 155 calculates correction values for daily measurement values and facility measurement values for common measurement items. For example, the correction unit 155 calculates the difference between the daily measurement value and facility measurement value of the common measurement item as the correction value. For example, the correction unit 155 calculates the deviation between the representative value of the distribution of the daily measured values of the common measurement items and the facility measured value as the correction value. For example, the correction unit 155 uses an average value such as an arithmetic mean, a geometric mean, or a harmonic mean of a plurality of daily measured values constituting the distribution as a representative value of the distribution of the daily measured values of the common measurement item. . For example, the correcting unit 155 uses, as a representative value of the distribution of the daily measured values of the common measurement item, the mode value and the median value of the plurality of daily measured values forming the distribution.
- FIG. 13 is an example of the frequency distribution of daily measured values of stride length.
- the daily measure of stride length in FIG. 13 is the distribution of 561 outlier-removed samples measured in walking over approximately 40 days.
- the average daily stride length measurement is 140 cm.
- the facility average value of the stride is 147 cm.
- the deviation between the average value of the distribution of daily measurements of stride length and the facility measurements is 7 cm.
- FIG. 14 is an example of the frequency distribution of daily measurement values of walking speed.
- the daily measured walking speed values in FIG. 13 are values measured at the same timing as in FIG. In the example of FIG. 14, the average daily walking speed measurement is 4.8 m/s.
- the facility average walking speed is 4.5 m/s.
- the deviation between the average value of the distribution of daily measured walking speed values and the facility measured values is 0.3 m/s.
- FIG. 15 is a table summarizing values of common measurement items before and after correction by the correction unit 155.
- FIG. 15 a row of facility measured values of stride length and walking speed before correction and a row of correction values of stride length and walking speed after correction are arranged vertically.
- a trainer who gives exercise guidance to the user from whom the data in FIG. 15 was acquired can review the training menu created based on the data before correction by comparing the stride length and walking speed before and after correction. .
- Facility measurements are taken under observation at the facility, so they tend to differ from daily measurements. For example, when the target person tries to walk with a better posture than usual, the stride tends to increase and the walking speed tends to increase. The examples of FIGS. 13 to 15 are presumed to show such a tendency. Conversely, for example, if the target person walks to appear more unwell than usual, the stride tends to be shorter and the walking speed tends to be slower.
- facility measurement values can be corrected using daily measurement values based on natural walking. Therefore, according to this embodiment, the original motor function in the daily environment can be reflected in the detailed evaluation of the motor function in the facility.
- the output unit 157 outputs correction values for common measurement items. For example, the output unit 157 outputs the value of the common measurement item corrected by the correction value. For example, the output unit 157 displays the values of the common measurement items and facility measurement items corrected by the correction values on the screen of the mobile terminal carried by the user. For example, the output unit 157 outputs the correction value to a terminal device that can be viewed at the facility where the facility measurement value was measured via a network (not shown). For example, the correction value output to the terminal device is displayed on the screen of that terminal device. For example, a person who checks the correction value displayed on the screen of the terminal device can recognize the difference between the facility measurement data and the daily measurement data. For example, the output unit 157 may be configured to output correction values of common measurement items to a display device (not shown) or an external system.
- FIG. 16 is a flowchart for explaining an example of the operation of the biological information processing device 15. As shown in FIG. In the description along the flow chart of FIG. 16, the biological information processing apparatus 15 will be described as an operating entity.
- the biological information processing device 15 acquires sensor data related to foot movement from the measuring device 11 (step S11).
- the biological information processing device 15 measures daily measurement data using the acquired sensor data (step S12).
- the biological information processing device 15 extracts daily measurement values of common measurement items from the measured daily measurement data (step S13).
- the biological information processing apparatus 15 calculates correction values for the facility measured values of the common measurement items based on the extracted daily measured values of the common measurement items (step S14).
- the biological information processing device 15 outputs the calculated correction value of the facility measurement value of the common measurement item (step S15).
- the correction value of the facility measurement value of the common measurement item output from the biological information processing device 15 is used according to the application.
- the information processing system of this embodiment includes a measuring device and a biological information processing device.
- the measuring device is placed on the user's footwear.
- the measuring device measures spatial acceleration and spatial angular velocity according to the walking of the user.
- a measurement device generates sensor data based on the measured spatial acceleration and spatial angular velocity.
- the measuring device outputs the generated sensor data to the biological information processing device.
- a biological information processing apparatus has a measurement unit, an extraction unit, a storage unit, a correction unit, and an output unit.
- the measurement unit receives sensor data regarding the movement of the user's foot from the measurement device.
- the measurement unit measures daily measurement data using the received sensor data.
- the extraction unit extracts, from the daily measurement data measured by the measurement unit, daily measurement values of common measurement items common to the facility measurement data measured at the facility.
- the storage unit stores facility measurement values of common measurement items.
- the correction unit corrects the facility measurement values of the common measurement items pre-stored in the storage unit based on the daily measurement values of the common measurement items extracted by the extraction unit.
- the output unit outputs the facility measurement values corrected by the correction unit.
- the information processing system of this embodiment corrects the facility measurement values of the common measurement items based on the daily measurement values of the common measurement items. Therefore, according to the present embodiment, differences in measured values (biological data) for evaluating motor function measured in different environments such as facilities and daily life can be corrected.
- the correction unit calculates the deviation between the representative value of the distribution of the daily measurement values of the common measurement items and the facility measurement values of the common measurement items.
- the correction unit uses the calculated deviation to correct the facility measurement values of the common measurement items. According to this aspect, since the facility measured value can be corrected based on the representative value of the distribution of the daily measured values accumulated in daily walking, highly accurate correction that reflects the daily life can be performed.
- the information processing system of this embodiment calculates correction values for facility measurement values of facility measurement items that are not included in the daily measurement data, based on the daily measurement values measured by the measuring device.
- facility measurement values of facility measurement items that are not included in daily measurement data are referred to as facility measurement values of facility measurement items.
- FIG. 17 is a block diagram showing an example of the configuration of the information processing system 20 of this embodiment.
- the information processing system 20 includes a measuring device 21 and a biological information processing device 25 .
- the measuring device 21 and the biological information processing device 25 may be connected by wire or wirelessly.
- the measuring device 21 and the biological information processing device 25 may be configured as a single device.
- the information processing system 20 may be configured with only the biological information processing device 25 excluding the measurement device 21 from the configuration of the information processing system 20 .
- the measuring device 21 is installed on the foot.
- the measuring device 21 has the same configuration as the measuring device 11 of the first embodiment.
- the measuring device 21 measures acceleration (also referred to as spatial acceleration) and angular velocity (also referred to as spatial angular velocity) as physical quantities relating to the movement of the user's feet wearing footwear such as shoes.
- the measuring device 21 converts the measured physical quantity into digital data (also called sensor data).
- the measuring device 21 transmits the converted sensor data to the biological information processing device 25 .
- the biological information processing device 25 receives sensor data from the measuring device 21 .
- the biological information processing device 25 measures daily measurement data using the received sensor data.
- the daily measurement data includes stride length, walking speed, maximum dorsiflexion angle, maximum plantarflexion angle, foot lift height, circling amount, and foot angle.
- the biological information processing device 25 extracts common measurement items with the facility measurement data from the measured daily measurement data.
- the biological information processing device 25 calculates correction values for the extracted common measurement items.
- the biological information processing apparatus 25 uses the calculated correction value of the common measurement item to correct the facility measurement value of the facility measurement item related to the common measurement item.
- the biological information processing device 25 measures the stride length, walking speed, maximum dorsiflexion angle, maximum plantarflexion angle, foot lift height, shunt amount, and foot angle as daily measurement values. For example, the biological information processing device 25 extracts daily measured values of stride length and walking speed as common measurement items. The biological information processing device 25 calculates correction values for stride length and walking speed. For example, the biological information processing device 25 uses the calculated stride length correction value to calculate the correction amount for the knee joint load related to the stride length.
- the knee joint load is the joint moment of the knee joint. A larger value of the knee joint load indicates a larger load on the knee.
- the biological information processing device 25 uses the calculated stride length and walking speed correction amounts to calculate a walking stability correction value related to the stride length and walking speed.
- Gait stability is the deviation of the center of gravity from the load bearing surface. The closer the walking stability is to 0, the more stable it is. When walking with the center of gravity eccentric forward, the walking stability tilts positively. When walking with the center of gravity eccentric to the rear, the walking stability inclines negatively.
- Facility measurement values related to common measurement items are not limited to knee joint loads and walking stability. The facility measurement values related to the common measurement items may be appropriately selected according to the motor function to be evaluated.
- the biological information processing device 25 outputs correction values for facility measurement values of facility measurement items related to common measurement items. For example, the biological information processing device 25 outputs the correction value of the facility measurement value of the facility measurement item corrected by the correction value. For example, the biological information processing device 25 outputs the correction value to a terminal device that can be viewed at the facility where the facility measurement data was measured. For example, the correction value output to the terminal device is displayed on the screen of that terminal device. For example, a person who checks the correction value displayed on the screen of the terminal device can recognize the difference between the facility measurement data and the daily measurement data. For example, the biological information processing device 25 may be configured to output correction values of facility measurement items to a display device (not shown) or an external system.
- FIG. 18 is a block diagram showing an example of the configuration of the biological information processing device 25.
- the biological information processing device 25 has a measurement unit 251 , an extraction unit 252 , a storage unit 253 , a correction unit 255 and an output unit 257 .
- the corrector 255 has a first corrector 261 and a second corrector 262 .
- the measurement unit 251 acquires sensor data from the measurement device 21 installed on the footwear worn by the user.
- the measurement unit 251 has the same configuration as the measurement unit 151 of the first embodiment.
- the measurement unit 251 measures daily measurement data using the acquired sensor data.
- the measuring unit 251 measures daily measurement data such as stride length, walking speed, maximum dorsiflexion angle, maximum plantarflexion angle, height of foot lift, amount of shunt, and foot angle.
- the extraction unit 252 extracts daily measurement values of common measurement items with facility measurement data from the daily measurement data measured by the measurement unit 251 .
- the extraction unit 252 extracts, from the daily measurement data continuously measured by the measurement unit 251, a representative value of daily measurement values of common measurement items with the facility measurement data.
- the extraction unit 252 extracts stride length and walking speed as common measurement items.
- the storage unit 253 stores common measurement items.
- the storage unit 253 also stores facility measurement values of facility measurement items related to common measurement items.
- the storage unit 253 stores facility measurement values of stride length and walking speed.
- the storage unit 253 stores facility measurement values of knee joint load and walking stability, which are facility measurement items related to stride length and walking speed.
- FIG. 19 is an example of facility measurement values stored in the storage unit 253.
- the facility-measured stride length is 147 cm
- the facility-measured walking speed is 4.8 m/s
- the knee joint load is 61 Nm (Newton meters)
- the walking stability is -0.5. is stored in the storage unit 153 .
- the knee joint load and walking stability are measured by a measurement method different from that of the measuring device 21 that measures the daily stride length and walking speed.
- knee joint loads are measured using motion capture and ground reaction force meters.
- walking stability is observed as a response to a disturbance stimulus on a treadmill.
- the facility measurement values stored in the storage unit 253 can be updated at any timing.
- the facility measurement values stored in the storage unit 253 are updated according to data transmitted from facilities such as gyms and hospitals via a network (not shown).
- a method for updating the facility measurement values stored in the storage unit 253 is not particularly limited.
- the first correction unit 261 calculates correction values for the daily measurement values and facility measurement values of common measurement items.
- the first corrector 261 has the same configuration as the corrector 155 of the first embodiment.
- the first correction unit 261 calculates correction values for stride length and walking speed.
- the first correction unit 261 calculates the difference between the daily measurement value and facility measurement value of the common measurement item as the correction value.
- the first correction unit 261 calculates the deviation between the representative value of the distribution of the daily measurement values of the common measurement items and the facility measurement value as the correction value.
- the first correction unit 261 uses, as the representative value of the distribution of the daily measured values of the common measurement item, an average value such as the arithmetic mean, the geometric mean, or the harmonic mean of the multiple daily measured values that constitute the distribution. used as For example, the first correction unit 261 uses the mode value and median value of the plurality of daily measurement values forming the distribution as the representative value of the distribution of the daily measurement values of the common measurement item.
- the second correction unit 262 uses the correction value of the common measurement item calculated by the first correction unit 261 to correct the facility measurement value of the facility measurement item related to the common measurement item. For example, the second correction unit 262 uses the stride length correction value to calculate the correction amount for the knee joint load related to the stride length. For example, the second correction unit 262 uses the correction values for the stride length and walking speed to calculate the correction amount for walking stability related to the stride length and walking speed. The second correction unit 262 calculates correction values for knee joint load and walking stability using the calculated correction amounts.
- the second correction unit 262 uses the method of Non-Patent Document 1 to calculate the correction amount of the knee joint load (Non-Patent Document 1: Lara Allet, et al., “The influence of stride-length on plantar foot-pressures and joint moments”, Gait & Posture 34, (2011), pp.300-306.).
- Non-Patent Document 1 Lara Allet, et al., “The influence of stride-length on plantar foot-pressures and joint moments”, Gait & Posture 34, (2011), pp.300-306.
- a 20% (percentage) increase in stride length results in an 18% increase in knee joint load.
- the stride length it is assumed that the daily measured value is 147 cm and the facility measured value is 140 cm.
- the knee joint load correction amount C KJL is calculated using Equation 1 below. That is, when the knee joint load before correction stored in the storage unit 253 is 61 Nm, the knee joint load after correction is the correction amount C KJL (-4.8%) calculated
- the second correction unit 262 uses the method of Non-Patent Document 2 to calculate the correction amount of walking stability (Non-Patent Document 2: D. D. Espy, et al., “Independent Influence of Gait Speed and Step Length on Stability and Fall Risk”, Gait Posture, 2010 Jul, 32(3), 378-82.).
- Non-Patent Document 2 when the normalized walking speed increases by 1, the walking stability improves by 0.229. Normalized walking speed is the walking speed divided by the square root of height times 9.8. Further, according to Non-Patent Document 2, when the normalized stride increases by 1, walking stability deteriorates by 0.901.
- the normalized stride length is a value obtained by dividing the stride length (half the stride length) by the height.
- the daily measured values are 147 cm and 4.5 m/s
- the facility measured values are 140 cm and 4.8 m/s for the stride length and walking speed of a subject whose height is 1.84 m.
- the walking stability correction amount C WS is calculated using Equation 2 below. That is, when the walking stability before correction stored in the storage unit 253 is -0.5, the walking stability after correction is the correction amount C WS (0.155) calculated using the above equation 2. improved value (-0.345).
- FIG. 20 is a table summarizing values of facility measurement items before and after correction by the first correction unit 261 and the second correction unit 262.
- FIG. 20 a row of facility measured values of knee joint load and walking stability before correction and a row of correction values of knee joint load and walking stability after correction are arranged vertically.
- a trainer who gives exercise guidance to the user from whom the data in FIG. 20 was acquired can review the training menu created based on the data before correction by referring to the knee joint load and walking stability after correction. can be done.
- knee joint load and walking stability are clear indicators of motor function. Therefore, based on the knee joint load and walking stability, a more accurate training menu can be created.
- the output unit 257 outputs correction values for common measurement items and facility measurement items. For example, the output unit 257 outputs values of common measurement items and facility measurement items corrected by the correction values. For example, the output unit 257 displays the values of the common measurement items and facility measurement items corrected by the correction values on the screen of the portable terminal carried by the user. For example, the output unit 257 outputs the correction value to a terminal device that can be viewed at the facility where the facility measurement value was measured. For example, the correction value output to the terminal device is displayed on the screen of that terminal device. For example, a person who confirms the correction value displayed on the screen of the terminal device can recognize the correction value of the facility measurement item in which the daily measurement value is reflected. For example, the output unit 257 may be configured to output correction values of common measurement items to a display device (not shown) or an external system.
- FIG. 21 is a flowchart for explaining an example of the operation of the biological information processing device 25. As shown in FIG. In the description according to the flowchart of FIG. 21, the biological information processing apparatus 25 will be described as an operating body.
- the biological information processing device 25 acquires sensor data relating to foot movement from the measuring device 21 (step S21).
- the biological information processing device 25 measures daily measurement data using the acquired sensor data (step S22).
- the biological information processing device 25 extracts the daily measurement values of the common measurement items from the measured daily measurement data (step S23).
- the biological information processing device 25 calculates correction values for the facility measured values of the common measurement items based on the extracted daily measured values of the common measurement items (step S24).
- the biological information processing device 25 calculates the correction value of the facility measurement value of the facility measurement item related to the common related item based on the calculated correction value of the facility measurement value of the common measurement item (step S25). .
- the biological information processing device 25 outputs the calculated correction value of the facility measurement value of the facility measurement item (step S26).
- the correction value of the facility measurement value of the facility measurement item output from the biological information processing device 25 is used according to the application.
- FIG. 22 is a conceptual diagram for explaining application example 1.
- sensor data is transmitted to the portable terminal 260 carried by the user according to the walking of the user wearing the shoes 200 on which the measuring device 21 is installed.
- the application biological information processing device 25
- the correction value output from the application is transmitted from the user's mobile terminal 260 to the trainer's mobile terminal 270 that manages the user's exercise.
- the information about the correction value sent to the trainer's mobile terminal 270 is displayed on the screen of the mobile terminal 270.
- information regarding corrected facility measurement data is displayed on the screen of the mobile terminal 270 .
- the knee joint load in daily walking is 58 Nm.” is displayed.
- a trainer who sees information displayed on the screen of the mobile terminal 270 can create a training menu according to the information.
- Facility measurements are not limited to those measured using specialized equipment that evaluates motor function.
- facility measurement values may be generated by visual inspection by a trainer of a sports gym or a specialist such as a physical therapist.
- the correction value calculated by the biological information processing device 25 may be reflected in the training menu created by the trainer.
- the daily measurement data related to the index value of the user's motor function visually determined by the trainer in the facility can be measured as a common measurement item, the index value is corrected based on the common measurement item. good too.
- the index value corrected based on the common measurement item is displayed on the screen of the mobile terminal 270 carried by the trainer.
- a trainer who sees the information displayed on the screen of the mobile terminal 270 can create a training menu according to the index value.
- a workout menu may be customized based on methods specific to a training gym or trainer.
- FIG. 23 is an example of displaying the training menu created in the example of FIG. 22 on the screen of the mobile terminal 260 carried by the user.
- a training menu created by a trainer who saw the information displayed on the screen of the mobile terminal 270 is transmitted to the mobile terminal 260 of the user to be managed, together with the trainer's comment.
- Information about the training menu transmitted to the user's mobile terminal 260 is displayed on the screen of the mobile terminal 260 .
- the user who sees the information displayed on the screen of the mobile terminal 260 can exercise according to the training menu and comments.
- a user-dedicated training menu created based on facility measurement values is corrected based on the user's daily measurement data. Therefore, according to this application example, it is possible to create a training menu that reflects the user's original motor function.
- FIG. 24 is a conceptual diagram for explaining application example 2.
- sensor data is transmitted to the portable terminal 260 carried by the user according to the walking of the user wearing the shoes 200 on which the measuring device 21 is installed.
- the application (biological information processing device 25) installed in the mobile terminal 260 calculates a correction value for correcting the facility measurement value of the facility measurement item related to the common measurement item with the facility measurement data, based on the received sensor data. do.
- the app verifies the degree of difference from the facility measurement values based on the calculated correction values. For example, when the correction value of the facility measurement value corrected based on the daily measurement value excessively exceeds the original facility measurement value, the application generates recommendation information recommending reducing the number of steps. For example, if the correction value of the facility measurement value corrected based on the daily measurement value is excessively lower than the original facility measurement value, the application generates recommendation information recommending an increase in the number of steps. For example, when the correction value of the facility measurement value corrected based on the daily measurement value is close to the original facility measurement value, the application generates recommendation information recommending maintaining the number of steps at that time. For example, the application displays recommended information corresponding to the calculated correction value on the screen of the mobile terminal 260 .
- the recommendation information is "Your knees are under strain. Let's reduce the number of steps tomorrow.” is displayed on the screen of the mobile terminal 260 .
- the user who sees the information displayed on the screen of the mobile terminal 260 can review his/her daily walking according to the information.
- the app compares the integrated value of the knee joint load in a predetermined period (one hour, one day, etc.) with a predetermined threshold,
- the mobile terminal 260 is notified of the advice received.
- the application recommends reducing the number of steps. Generate recommendations.
- the predetermined threshold value in this case is a limit value of the knee joint load so as not to damage the knee joint.
- the app recommends maintaining the number of steps. Generate recommendations.
- the predetermined threshold value in this case is a proper knee joint load necessary and sufficient to maintain health.
- the application displays recommended information corresponding to the calculated correction value on the screen of the mobile terminal 260 .
- the integrated value of the correction value of the facility measurement value of the knee joint load corrected based on the daily measurement value in a predetermined period exceeds a predetermined threshold value, the "knee The recommendation information "I'm overburdened. Let's reduce the number of steps tomorrow." For example, the user who sees the information displayed on the screen of the mobile terminal 260 can review his/her daily walking according to the information.
- the relationship between the correction value of the facility measurement value and the original facility measurement value, and the relationship between the integrated value of the correction value of the facility measurement value corrected based on the daily measurement value in a predetermined period and a predetermined threshold is displayed on the screen of the portable terminal 260 carried by the user. Therefore, according to this application example, it is possible to provide the user with recommendation information that reflects the user's original motor function. For example, for an elderly person who is concerned about knee pain but wants to continue walking for health reasons, it is desirable to walk at an appropriate number of steps on a daily basis.
- the information processing system of this embodiment includes a measuring device and a biological information processing device.
- the measuring device is placed on the user's footwear.
- the measuring device measures spatial acceleration and spatial angular velocity according to the walking of the user.
- a measurement device generates sensor data based on the measured spatial acceleration and spatial angular velocity.
- the measuring device outputs the generated sensor data to the biological information processing device.
- a biological information processing apparatus has a measurement unit, an extraction unit, a storage unit, a correction unit, and an output unit.
- the measurement unit receives sensor data regarding the movement of the user's foot from the measurement device.
- the measurement unit measures daily measurement data using the received sensor data.
- the extraction unit extracts, from the daily measurement data measured by the measurement unit, daily measurement values of common measurement items common to the facility measurement data measured at the facility.
- the storage unit stores facility measurement values of common measurement items and facility measurement values of facility measurement items related to the common measurement items.
- the corrector includes a first corrector and a second corrector.
- the first correction unit corrects the facility measurement values of the common measurement items based on the daily measurement values of the common measurement items extracted by the extraction unit.
- the second correction unit corrects the facility measurement values of the facility measurement items related to the common measurement items based on the facility measurement values of the common measurement items corrected by the first correction unit.
- the output unit outputs the facility measurement value of the facility measurement item corrected by the second correction unit.
- the information processing system of this embodiment corrects the facility measurement values of the facility measurement items related to the common measurement items based on the daily measurement values of the common measurement items. Therefore, according to the present embodiment, it is possible to correct differences in measured values (biological data) of measurement items related to measurement items measured in different environments such as facilities and daily life.
- the extraction unit extracts the daily measured value of stride length as the common measurement item.
- the correction unit corrects the facility measurement value of the knee joint load, which is a facility measurement item related to the stride length, based on the daily measurement value of the stride length extracted by the extraction unit.
- the facility measurement value of the knee joint load measured in an environment (facility) different from the daily life can be corrected based on the stride length measured on a daily basis.
- the extraction unit extracts daily measured values of stride length and walking speed as common measurement items.
- the correction unit corrects the facility measurement value of walking stability, which is a facility measurement item related to stride length and walking speed, based on the daily measurement values of stride length and walking speed extracted by the extraction unit.
- the facility measurement value of walking stability measured in an environment (facility) different from the daily life can be corrected based on the stride length and the walking speed that are measured in the daily life.
- the output unit outputs the correction value of the facility measurement value to a terminal device that can be viewed by the trainer who manages the user's exercise.
- the output unit acquires the training menu created by the trainer according to the correction values of the facility measurement values.
- the output section acquires a training menu via an input section (not shown).
- the output unit displays the acquired training menu on the screen of the terminal device that can be viewed by the user. According to this aspect, it is possible to provide the user with a training menu updated by the trainer based on the facility measurement values reflecting the daily measurement values.
- the output unit displays recommended information corresponding to the correction value of the facility measurement value on the screen of the terminal device that can be viewed by the user. According to this aspect, it is possible to provide the user with recommendation information that reflects the state of daily exercise.
- FIG. 25 is a block diagram showing an example of the configuration of the biological information processing device 35 of this embodiment.
- the biological information processing device 35 includes an extractor 352 and a corrector 355 .
- the extraction unit 352 extracts daily measured values of common measurement items that are common to facility measurement data measured at facilities from daily measurement data measured using sensor data related to the movement of the user's feet.
- the correction unit 355 corrects the facility measurement values of the common measurement items stored in advance based on the daily measurement values of the common measurement items extracted by the extraction unit 352 .
- the biological information processing apparatus of this embodiment corrects the facility measurement values of the common measurement items based on the daily measurement values of the common measurement items. Therefore, according to the present embodiment, differences in measured values (biological data) for evaluating motor function measured in different environments such as facilities and daily life can be corrected.
- the information processing device 90 includes a processor 91, a main memory device 92, an auxiliary memory device 93, an input/output interface 95, and a communication interface 96.
- the interface is abbreviated as I/F (Interface).
- Processor 91 , main storage device 92 , auxiliary storage device 93 , input/output interface 95 , and communication interface 96 are connected to each other via bus 98 so as to enable data communication.
- the processor 91 , the main storage device 92 , the auxiliary storage device 93 and the input/output interface 95 are connected to a network such as the Internet or an intranet via a communication interface 96 .
- the processor 91 loads the program stored in the auxiliary storage device 93 or the like into the main storage device 92 .
- the processor 91 executes programs developed in the main memory device 92 .
- a configuration using a software program installed in the information processing device 90 may be used.
- the processor 91 executes control and processing according to this embodiment.
- the main storage device 92 has an area in which programs are expanded.
- a program stored in the auxiliary storage device 93 or the like is developed in the main storage device 92 by the processor 91 .
- the main memory device 92 is realized by a volatile memory such as a DRAM (Dynamic Random Access Memory). Further, as the main storage device 92, a non-volatile memory such as MRAM (Magnetoresistive Random Access Memory) may be configured/added.
- the auxiliary storage device 93 stores various data such as programs.
- the auxiliary storage device 93 is implemented by a local disk such as a hard disk or flash memory. It should be noted that it is possible to store various data in the main storage device 92 and omit the auxiliary storage device 93 .
- the input/output interface 95 is an interface for connecting the information processing device 90 and peripheral devices based on standards and specifications.
- a communication interface 96 is an interface for connecting to an external system or device through a network such as the Internet or an intranet based on standards and specifications.
- the input/output interface 95 and the communication interface 96 may be shared as an interface for connecting with external devices.
- Input devices such as a keyboard, mouse, and touch panel may be connected to the information processing device 90 as necessary. These input devices are used to enter information and settings.
- a touch panel is used as an input device, the display screen of the display device may also serve as an interface of the input device. Data communication between the processor 91 and the input device may be mediated by the input/output interface 95 .
- the information processing device 90 may be equipped with a display device for displaying information.
- the information processing device 90 is preferably provided with a display control device (not shown) for controlling the display of the display device.
- the display device may be connected to the information processing device 90 via the input/output interface 95 .
- the information processing device 90 may be equipped with a drive device. Between the processor 91 and a recording medium (program recording medium), the drive device mediates reading of data and programs from the recording medium, writing of processing results of the information processing device 90 to the recording medium, and the like.
- the drive device may be connected to the information processing device 90 via the input/output interface 95 .
- the above is an example of the hardware configuration for enabling control and processing according to each embodiment of the present invention.
- the hardware configuration of FIG. 26 is an example of a hardware configuration for executing control and processing according to each embodiment, and does not limit the scope of the present invention.
- the scope of the present invention also includes a program that causes a computer to execute control and processing according to each embodiment.
- the scope of the present invention also includes a program recording medium on which the program according to each embodiment is recorded.
- the recording medium can be implemented as an optical recording medium such as a CD (Compact Disc) or a DVD (Digital Versatile Disc).
- the recording medium may be implemented by a semiconductor recording medium such as a USB (Universal Serial Bus) memory or an SD (Secure Digital) card.
- the recording medium may be realized by a magnetic recording medium such as a flexible disk, or other recording medium.
- each embodiment may be combined arbitrarily.
- the components of each embodiment may be realized by software or by circuits.
- the measurement device of each embodiment is implemented by a microcomputer, microcontroller, or the like.
- the biological information processing apparatus of each embodiment is realized by functions of a computer included in a cloud or server.
- the biological information processing apparatus of each embodiment may be implemented by software installed in a smart phone, tablet, notebook or stationary personal computer.
- Reference Signs List 10 20 information processing system 11, 21 measuring device 15, 25, 35 biological information processing device 111 acceleration sensor 112 angular velocity sensor 113 control unit 115 transmission unit 151, 251 measurement unit 152, 252, 352 extraction unit 153, 253 storage unit 155 , 255, 355 correction unit 157, 257 output unit 261 first correction unit 262 second correction unit
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Abstract
Description
まず、第1の実施形態に係る情報処理システムについて図面を参照しながら説明する。本実施形態の情報処理システムは、ユーザの足部に設置されたセンサによって取得されたセンサデータを用いて、日常における計測データ(日常計測データとも呼ぶ)を計測する。本実施形態の情報処理システムは、計測された日常計測データから、スポーツジムや病院等の施設で計測された計測データ(施設計測データとも呼ぶ)と共通する計測項目(共通計測項目とも呼ぶ)を抽出する。日常計測データは、データ量は多いが、情報量が制限される浅いデータである。施設計測データは、データ量は少ないが、情報量が多い深いデータである。本実施形態の情報処理システムは、データ量が多い日常計測データに基づいて施設計測データを補正する。
図1は、本実施形態の情報処理システム10の構成の一例を示すブロック図である。情報処理システム10は、計測装置11および生体情報処理装置15を備える。計測装置11と生体情報処理装置15は、有線で接続されてもよいし、無線で接続されてもよい。また、計測装置11と生体情報処理装置15は、単一の装置で構成されてもよい。また、情報処理システム10の構成から計測装置11を除き、生体情報処理装置15だけで情報処理システム10が構成されてもよい。
次に、計測装置11の詳細について図面を参照しながら説明する。図9は、計測装置11の詳細構成の一例を示すブロック図である。計測装置11は、加速度センサ111、角速度センサ112、制御部113、および送信部115を有する。また、計測装置11は、図示しない電源を含む。
次に、情報処理システム10が備える生体情報処理装置15の詳細について図面を参照しながら説明する。図10は、生体情報処理装置15の構成の一例を示すブロック図である。生体情報処理装置15は、計測部151、抽出部152、記憶部153、補正部155、および出力部157を有する。
次に、本実施形態の情報処理システム10の動作の一例について図面を参照しながら説明する。ここでは、情報処理システム10の生体情報処理装置15の動作の一例について、フローチャートを参照しながら説明する。図16は、生体情報処理装置15の動作の一例について説明するためのフローチャートである。図16のフローチャートに沿った説明においては、生体情報処理装置15を動作主体として説明する。
次に、第2の実施形態に係る情報処理システムについて図面を参照しながら説明する。本実施形態の情報処理システムは、計測装置によって計測される日常計測値に基づいて、日常計測データには含まれない施設計測項目の施設計測値の補正値を計算する。以下において、日常計測データには含まれない施設計測項目の施設計測値を、施設計測項目の施設計測値と呼ぶ。
図17は、本実施形態の情報処理システム20の構成の一例を示すブロック図である。情報処理システム20は、計測装置21および生体情報処理装置25を備える。計測装置21と生体情報処理装置25は、有線で接続されてもよいし、無線で接続されてもよい。また、計測装置21と生体情報処理装置25は、単一の装置で構成されてもよい。また、情報処理システム20の構成から計測装置21を除き、生体情報処理装置25だけで情報処理システム20が構成されてもよい。
次に、情報処理システム20が備える生体情報処理装置25の詳細について図面を参照しながら説明する。図18は、生体情報処理装置25の構成の一例を示すブロック図である。生体情報処理装置25は、計測部251、抽出部252、記憶部253、補正部255、および出力部257を有する。補正部255は、第1補正部261と第2補正部262を有する。
すなわち、記憶部253に記憶された補正前の膝関節負荷が61Nmの場合、補正後の膝関節負荷は、上記の式1を用いて算出された補正量CKJL(-4.8%)だけ低減された値(58Nm)になる。
すなわち、記憶部253に記憶された補正前の歩行安定性が-0.5の場合、補正後の歩行安定性は、上記の式2を用いて算出された補正量CWS(0.155)だけ改善された値(-0.345)になる。
次に、本実施形態の情報処理システム20の動作の一例について図面を参照しながら説明する。ここでは、情報処理システム20の生体情報処理装置25の動作の一例について、フローチャートを参照しながら説明する。図21は、生体情報処理装置25の動作の一例について説明するためのフローチャートである。図21のフローチャートに沿った説明においては、生体情報処理装置25を動作主体として説明する。
次に、本実施形態の適用例について図面を参照しながら説明する。以下の適用例においては、ユーザが履く靴に設置された計測装置21によって計測されたセンサデータを、そのユーザの携帯端末にインストールされたアプリケーション(アプリとも呼ぶ)で処理する例について説明する。以下の適用例においては、第2の実施形態の生体情報処理装置25の機能を発揮するアプリが携帯端末にインストールされているものとする。
図22は、適用例1について説明するための概念図である。本適用例では、計測装置21が設置された靴200を履いたユーザの歩行に応じて、そのユーザが携帯する携帯端末260にセンサデータが送信される。携帯端末260にインストールされたアプリ(生体情報処理装置25)は、受信したセンサデータに基づいて、施設計測データとの共通計測項目に関連する施設計測項目の施設計測値を補正する補正値を出力する。アプリから出力された補正値は、ユーザの携帯端末260から、そのユーザの運動を管理するトレーナーの携帯端末270に送信される。
図24は、適用例2について説明するための概念図である。本適用例では、計測装置21が設置された靴200を履いたユーザの歩行に応じて、そのユーザが携帯する携帯端末260にセンサデータが送信される。携帯端末260にインストールされたアプリ(生体情報処理装置25)は、受信したセンサデータに基づいて、施設計測データとの共通計測項目に関連する施設計測項目の施設計測値を補正する補正値を算出する。
第1補正部は、抽出部によって抽出された共通計測項目の日常計測値に基づいて、共通計測項目の施設計測値を補正する。第2補正部は、第1補正部によって補正された共通計測項目の施設計測値に基づいて、共通計測項目に関連する施設計測項目の施設計測値を補正する。出力部は、第2補正部によって補正された施設計測項目の施設計測値を出力する。
次に、第3の実施形態に係る生体情報処理装置について図面を参照しながら説明する。本実施形態の生体情報処理装置は、第1~第2の実施形態の生体情報処理装置を簡略化した構成である。図25は、本実施形態の生体情報処理装置35の構成の一例を示すブロック図である。生体情報処理装置35は、抽出部352と補正部355を備える。
ここで、本開示の各実施形態に係る制御や処理を実行するハードウェア構成について、図26の情報処理装置90を一例として挙げて説明する。なお、図26の情報処理装置90は、各実施形態の制御や処理を実行するための構成例であって、本開示の範囲を限定するものではない。
11、21 計測装置
15、25、35 生体情報処理装置
111 加速度センサ
112 角速度センサ
113 制御部
115 送信部
151、251 計測部
152、252、352 抽出部
153、253 記憶部
155、255、355 補正部
157、257 出力部
261 第1補正部
262 第2補正部
Claims (10)
- ユーザの足の動きに関するセンサデータを用いて計測される日常計測データから、施設で計測された施設計測データと共通する共通計測項目の日常計測値を抽出する抽出手段と、
抽出された前記共通計測項目の日常計測値に基づいて、予め記憶された前記共通計測項目の施設計測値を補正する補正手段と、を備える生体情報処理装置。 - 前記補正手段は、
前記共通計測項目の日常計測値の分布の代表値と、前記共通計測項目の施設計測値との偏差を計算し、
算出された前記偏差を用いて、前記共通計測項目の施設計測値を補正する請求項1に記載の生体情報処理装置。 - 前記補正手段は、
前記共通計測項目の日常計測値に基づいて、前記共通計測項目の施設計測値を補正し、
補正された前記共通計測項目の施設計測値に基づいて、前記共通計測項目に関連する施設計測項目の施設計測値を補正する請求項1または2に記載の生体情報処理装置。 - 前記抽出手段は、
前記共通計測項目としてストライド長の日常計測値を抽出し、
前記補正手段は、
抽出された前記ストライド長の日常計測値に基づいて、前記ストライド長に関連する施設計測項目である膝関節負荷の施設計測値を補正する請求項3に記載の生体情報処理装置。 - 前記抽出手段は、
前記共通計測項目としてストライド長および歩行速度の日常計測値を抽出し、
前記補正手段は、
抽出された前記ストライド長および前記歩行速度の日常計測値に基づいて、前記ストライド長および前記歩行速度に関連する施設計測項目である歩行安定性の施設計測値を補正する請求項3に記載の生体情報処理装置。 - 前記補正手段によって補正された施設計測値の補正値を出力する出力手段を備え、
前記出力手段は、
前記施設計測値の補正値を、前記ユーザの運動を管理するトレーナーによって閲覧可能な端末装置に出力し、
前記施設計測値の補正値に応じて前記トレーナーによって作成されたトレーニングメニューを取得し、
取得された前記トレーニングメニューを、前記ユーザによって閲覧可能な端末装置の画面に表示させる請求項1乃至5のいずれか一項に記載の生体情報処理装置。 - 前記補正手段によって補正された施設計測値の補正値を出力する出力手段を備え、
前記出力手段は、
前記施設計測値の補正値に応じた推薦情報を、前記ユーザによって閲覧可能な端末装置の画面に表示させる請求項1乃至5のいずれか一項に記載の生体情報処理装置。 - 請求項1乃至7のいずれか一項に記載の生体情報処理装置と、
ユーザの履物に配置され、前記ユーザの歩行に応じて空間加速度および空間角速度を計測し、計測された前記空間加速度および前記空間角速度に基づくセンサデータを生成し、生成された前記センサデータを前記生体情報処理装置に出力する計測装置と、を備える情報処理システム。 - コンピュータが、
ユーザの足の動きに関するセンサデータを用いて計測される日常計測データから、施設で計測された施設計測データと共通する共通計測項目の日常計測値を抽出し、
抽出された前記共通計測項目の日常計測値に基づいて、予め記憶された前記共通計測項目の施設計測値を補正する生体情報処理方法。 - ユーザの足の動きに関するセンサデータを用いて計測される日常計測データから、施設で計測された施設計測データと共通する共通計測項目の日常計測値を抽出る処理と、
抽出された前記共通計測項目の日常計測値に基づいて、予め記憶された前記共通計測項目の施設計測値を補正する処理と、をコンピュータに実行させるプログラムが記録された非一過性の記録媒体。
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