WO2004091400A1 - 加速度センサ軸情報補正装置及び加速度センサ軸情報補正方法 - Google Patents
加速度センサ軸情報補正装置及び加速度センサ軸情報補正方法 Download PDFInfo
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- WO2004091400A1 WO2004091400A1 PCT/JP2004/005117 JP2004005117W WO2004091400A1 WO 2004091400 A1 WO2004091400 A1 WO 2004091400A1 JP 2004005117 W JP2004005117 W JP 2004005117W WO 2004091400 A1 WO2004091400 A1 WO 2004091400A1
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- correction
- acceleration
- parameter
- acceleration sensor
- correcting
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1116—Determining posture transitions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1118—Determining activity level
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1123—Discriminating type of movement, e.g. walking or running
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/02—Exercising apparatus specially adapted for particular parts of the body for the abdomen, the spinal column or the torso muscles related to shoulders (e.g. chest muscles)
- A63B23/0244—Exercising apparatus specially adapted for particular parts of the body for the abdomen, the spinal column or the torso muscles related to shoulders (e.g. chest muscles) with signalling or indicating means, e.g. of incorrect posture, for deep-breathing exercises
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
- G01C22/006—Pedometers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2503/00—Evaluating a particular growth phase or type of persons or animals
- A61B2503/08—Elderly
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/02—Operational features
- A61B2560/0223—Operational features of calibration, e.g. protocols for calibrating sensors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0219—Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
Definitions
- the present invention relates to a device having an acceleration sensor for detecting human behavior and posture (body state), and more particularly to a technique for correcting a parameter representing each acceleration direction of the acceleration sensor.
- pedometers and mercury As a method of detecting movement and posture, pedometers and mercury A method of discriminating between a stationary state and an operating state using a switch or the like has been proposed. Recently, various high-performance acceleration sensors and gyro sensors (angular acceleration sensors) have been developed, and devices and methods for detecting a walking state, a body inclination, a walking direction, and the like using these have been proposed (for example, Japanese Patent Application Laid-Open No. 2002-111954).
- the present invention has been made in view of the above problems, and represents each direction related to the acceleration sensor for accurately determining the behavior and posture of a moving object equipped with a specific device including an acceleration sensor. It is an object of the present invention to provide an acceleration sensor axis information correction device that corrects parameters. Disclosure of the invention
- an acceleration sensor axis information correction device includes an acceleration sensor axis information correction device that corrects parameters representing each acceleration direction in an acceleration sensor built in a specific device mounted on a moving object.
- An apparatus comprising: correction-related information obtaining means for obtaining correction-related information related to correction of the parameter; and correction means for correcting the parameter based on the obtained correction-related information.
- the acceleration sensor axis information correction device includes a switch reception unit that receives a press from a user on a plurality of switches indicating a mounting location of the specific device, and the correction related information acquisition unit includes: , Receiving It may be configured such that the attached press is acquired as the correction related information.
- the parameter representing each acceleration direction in the acceleration sensor is corrected based on the pressed switch, so that the user can correct the above parameter by a simple operation.
- an acceleration sensor axis information correction device includes a collection unit that collects acceleration data for a predetermined action of the moving object, based on the collected acceleration data. And a direction determining means for determining the direction of each of the accelerations, wherein the correction-related information obtaining means may be configured to obtain the determined direction of the acceleration as the correction-related information.
- the present device specifies the characteristics of the change in the acceleration data collected for the predetermined action, and corrects the parameters based on the specified characteristics. The burden on the case is reduced.
- the acceleration sensor axis information correction device further comprises a correction for determining a timing to start collecting the acceleration data based on a predetermined trigger.
- An inducing means may be provided, and the data collecting means may be configured to collect the acceleration data after the timing determined by the correction inducing means.
- the present apparatus receives a trigger (timing) for starting the correction, and starts collecting the acceleration data after the received trigger. Therefore, unnecessary collection of the acceleration data is eliminated, and the efficiency is improved. Acceleration data can be collected specifically.
- the correction inducing means of the axis information correcting device may be configured to receive a sound and use the received sound as the trigger.
- the device allows the wearer to instruct the start of correction by voice, so that even if the wear position is difficult to operate by hand, Operation can be performed, and correct correction can be performed by avoiding erroneous operation at the time of correction by hand.
- correction inducing means of the acceleration sensor axis information correcting device may be configured to detect that the specific device is attached to the moving body, and use the detection as the trigger. .
- the device automatically detects that the wearer has removed or put on the device, automatically determines whether or not correction is necessary, and urges the wearer to perform the correction. Or the correction can be started automatically.
- the direction determining means of the acceleration sensor axis information correction device associates, with respect to walking of a person, information indicating a direction of an acceleration and a characteristic of a change in the acceleration.
- a comparison determining unit that determines the direction of each acceleration by comparing the two.
- the present device provides voice guidance for a predetermined action to be performed by the wearer, so that the wearer need only act in accordance with the guidance, and complicated user operations during correction are required.
- the action or posture informing device provides a parameter indicating each acceleration direction of the built-in acceleration sensor.
- a motion or posture detecting device for detecting a behavior or a posture of a moving object, the device having a function of correcting a parameter, wherein a correction related information acquiring unit for acquiring correction related information related to the correction of the parameter; and the acquired correction.
- the present invention is realized as an acceleration sensor axis information correction method using the characteristic constituent means of the acceleration sensor axis information correction device as steps, or all of those steps are performed. It can also be implemented as a program that includes The program can be stored not only in the ROM or the like provided in the acceleration sensor axis information correction device, but also can be distributed via a recording medium such as a CD-ROM or a transmission medium such as a communication network.
- an action or posture detection device having the function of the acceleration sensor axis information correction device may be used as a behavior or posture detection device for detecting the behavior or posture of a moving object, or an action or posture detection using the characteristic constituent means of the device as a step. It can also be implemented as a method.
- the acceleration sensor axis information correction device of the present invention even when the mounting position changes, the parameter can be appropriately corrected in accordance with the change, and the action or posture can be changed. Malfunctions during measurement can be avoided.
- FIG. 1 is a diagram showing the appearance of the behavior or posture detection device according to the first embodiment.
- FIG. 2 is a diagram illustrating a configuration example of an acceleration sensor incorporated in the behavior or posture detection device.
- FIG. 3 is a block diagram showing a functional configuration of the behavior or posture detection device according to the first embodiment.
- FIG. 4 is a diagram showing a state in which the wearer wears the behavior or posture detecting device.
- Figure 5 (a) is a diagram showing how the parameters (meaning of each axis) change when the wearer wears the behavior or posture detection device on the left hip, right hip, back and abdomen. is there.
- FIG. 5 (b) is a diagram showing an example of the meaning of each parameter when the wearer wears the behavior or posture detection device on the left hip, right hip, back and abdomen.
- FIG. 6 is a block diagram showing a functional configuration of the behavior or posture detection device according to the second embodiment.
- FIG. 7 is a flowchart showing a flow of the operation of the action or posture detection device according to the second embodiment.
- FIG. 8 is a block diagram showing a functional configuration of the behavior or posture detection device according to the third embodiment.
- FIG. 9 is a flowchart showing a flow of the operation of the behavior or posture detection device according to the third embodiment.
- FIG. 10 is a block diagram showing a functional configuration of the behavior or posture detection device according to the fourth embodiment.
- FIG. 11 shows the behavior of the action or posture detection device in the fourth embodiment. This is a flow chart showing the flow.
- FIG. 12 is a block diagram showing a functional configuration of the behavior or posture detection device according to the fifth embodiment.
- FIG. 13 is a flowchart showing a flow of operation of the behavior or posture detection device according to the fifth embodiment.
- FIG. 14 is a block diagram showing a functional configuration of the behavior or posture detection device according to the sixth embodiment.
- FIG. 15 is a diagram showing an example of a histogram distribution of acceleration data at each sensor when the wearer is walking.
- FIG. 16 is a flowchart showing a flow of operation of the behavior or posture detection device according to the sixth embodiment.
- FIG. 1 is a diagram showing the appearance of the behavior or posture detecting apparatus 100 in the present embodiment.
- the behavior or posture detection device 100 is a device for specifying the behavior or posture of a person wearing the device (hereinafter referred to as a “subject”) by using a built-in acceleration sensor.
- This device has a business card size slightly thin rectangular parallelepiped shape (for example, 5 cm (length) x 8 cm (width) x 1.5 cm (thickness)). It is equipped with a liquid crystal panel 102, a compensation trigger button 103, a speaker 104 and a microphone 105.
- action or posture detection device 1 The reference numeral 0 denotes a fixing band 106 to be attached to the human body (for example, fixed through a belt).
- buttons 101 are buttons pressed by a wearer or a user (caregiver) to determine the position where the device 100 is worn. For example, when the device 100 is worn on the left hip of the wearer, the “left” button is pressed. Similarly, the “right” button was worn on the wearer's right waist, and the “front” button was worn on the wearer's lower back when worn on the wearer's abdomen. In this case, the “Back” button is pressed respectively.
- the liquid crystal panel 102 displays an operation mode of the apparatus and an error message.
- the correction trigger button 103 is a button pressed by a wearer or the like when starting parameter correction in the present apparatus 100.
- parameter correction refers to the relationship between the direction of each acceleration sensor built into the device and the reference direction of the wearer (for example, the front direction is the reference direction of the wearer). To clarify the relationship. Therefore, it is necessary to perform the above correction every time the mounting position of the device is changed.
- the speaker 104 outputs a sound for giving a predetermined instruction to the user at the time of correcting the above parameters.
- the microphone 105 accepts an instruction from the user by voice when correcting the above parameters.
- FIG. 2 is a diagram showing a configuration example of an acceleration sensor built in the action or posture detection device 100 in FIG.
- the present acceleration sensor can detect three-axis acceleration by using two two-axis acceleration sensors. More specifically, referring to FIG. 2, the circuit board 22 is fixed at a position perpendicular to the circuit board 21.
- the IC type acceleration sensor 23 or 24 with the same specifications is placed on each board.
- the acceleration sensor 23 detects acceleration in the X axis and the Y axis
- the acceleration sensor 24 detects acceleration in the Z axis. Therefore, as shown in FIG. 2, in the acceleration sensor 24, the output of one axis (the axis shown by the broken line) is not used.
- FIG. 3 is a block diagram showing a functional configuration of the action or posture detection device 100 according to the present embodiment.
- the behavior or posture detection device 100 includes an acceleration sensing unit 11, an evaluation unit 12, a mounting position selection unit 13, a parameter correction unit 14, and a parameter storage unit 15. ing.
- the acceleration sensing unit 11 collects data representing the acceleration in the left-right direction, the front-rear direction, and the up-down direction in the behavior and posture of the wearer, and outputs the data to the evaluation unit 12.
- the evaluation unit 12 determines the current behavior and posture of the wearer from the pattern in which the acceleration in each direction changes. For example, in the case where "a pattern having a large amplitude of a certain period for a certain period of time or more appears in the acceleration data in the vertical direction" is determined to be "walking", the determination is "instant without periodicity.” If a large change in amplitude appears in the acceleration data in the vertical and longitudinal directions, and then there is no significant change in the acceleration data in each direction for a certain period of time. " Judge that it was hot. Furthermore, it is possible to determine a change in the posture of the wearer (for example, a forward lean after sitting) based on a change in acceleration in each direction.
- the mounting position selection section 13 is a section corresponding to the buttons 101 in FIG. 1 and includes a plurality of button switches associated with a plurality of mounting position candidates, and allows the wearer or the like to set the mounting position. After determining the position, the depression of the potentiometer corresponding to the position is accepted to determine the mounting position, and the information indicating the determined mounting position is transmitted to the parameter correction unit 14.
- the parameter correction unit 14 Upon receiving the information indicating the mounting position from the mounting position selecting unit 13, the parameter correction unit 14 reads from the parameter storage unit 15 the parameters used to determine the action or posture corresponding to the mounting position, Output to the evaluation unit 1 and 2.
- the parameter storage unit 15 is a storage device including a RAM and the like.
- the parameter storage unit 15 stores parameters and information about the parameters used when the behavior and posture of the plurality of mounting position candidates are determined.
- the present apparatus 100 includes a control unit (for example, a CPU having a ROM, a RAM, and the like) that controls processing timing and the like in each unit.
- a control unit for example, a CPU having a ROM, a RAM, and the like
- FIG. 4 is a diagram showing a state in which the wearer wears the present apparatus 100.
- the X-axis of the acceleration sensor in Fig. 2 represents the left-right direction
- the Y-axis represents the front-back direction
- the Z-axis represents the up-down direction.
- the wearer moves the device 100 to the abdomen, right waist, or back along the belt, the directions indicated by the X and Y axes of the acceleration sensor change. .
- the device 100 is mounted on the left hip, as shown in Fig.
- the acceleration data on the X axis (left and right directions) is defined as positive on the right and negative on the left.
- Y-axis (front-back direction) acceleration data The front is positive and the back is negative.
- z-axis (vertical direction) acceleration data the top is positive and the bottom is negative.
- FIG. 5 (b) shows the case where the wearer wears the device 100 on the left hip (reference position), right hip (position 1), back (position 2) and abdomen (position 3).
- FIG. 3 is a diagram showing an example of the meaning of each parameter (that is, the meaning of each direction represented by three axes).
- the relationship with the reference position (left hip) indicates that sensor 1 (X axis in Fig. 2 above)
- sensor 1 X axis in Fig. 2 above
- the direction represented by the sensor 1 changes from the left-right direction to the front-rear direction
- the sensor 2 The direction represented changes from the front-back direction to the left-right direction.
- the parameter correction unit 14 based on the button pressed by the wearer or the like via the mounting position selection unit 13. Reads the parameters of the mounting position corresponding to the above button from the parameter storage unit 15 and outputs the parameters to the evaluation unit 12.
- the evaluation unit 12 determines the behavior and posture of the wearer using the acceleration data input from the acceleration sensing unit 11 and the read parameters.
- the behavior or posture detection apparatus 10 By using 0, the press of the button corresponding to the mounting position where the device 100 is mounted is accepted, and the parameters are corrected based on this. Judgment can be avoided.
- Embodiment 1 described above an example is described in which parameters are corrected by receiving a press of a button corresponding to a mounting position from a wearer or the like, but in the present embodiment, a correction trigger button is pressed. After that, an embodiment will be described in which acceleration data for a predetermined action pattern is collected, and parameters are corrected by evaluating the acceleration data.
- FIG. 6 is a block diagram showing a functional configuration of the action or posture detection device 200 according to the present embodiment.
- the present apparatus 200 includes an acceleration sensing unit 11, an evaluation unit 12, a parameter correction unit 14, a parameter storage unit 15, a correction trigger unit 31, and a mounting position determination unit 32.
- the same reference numerals are given to the same functional configurations as in the first embodiment, and description thereof will be omitted.
- the correction trigger section 31 has a potentiometer switch (corresponding to, for example, the correction trigger button 103 in FIG. 1), and when it is detected that the button switch has been pressed by a wearer or the like, the parameter is set.
- a signal indicating the start of the correction of the acceleration is transmitted to the acceleration sensing unit 11 and the mounting position determination unit 32.
- the mounting position determination section 32 evaluates the acceleration data input from the acceleration sensing section 11 within a fixed time (for example, 15 seconds), and The mounting position of 200 is determined, and parameters are corrected based on the determination result.
- the present apparatus 200 includes a control unit (for example, a CPU having a ROM, a RAM, and the like) that controls processing timing and the like in each unit.
- the correction trigger unit 31 sends a signal indicating that correction is started to the acceleration sensing unit 1. 1 and transmitted to the mounting position determination unit 32.
- the acceleration sensing unit 11 collects acceleration data for 15 seconds after the button switch is pressed (S702).
- the mounting position determination unit 32 determines the direction of each sensor (X-axis, Y-axis, and Z-axis) based on the collected acceleration data. It is determined whether it is represented (S704). For example, if the value of sensor 1 (X-axis) greatly changes to "positive” in the first 5 seconds, and the value of sensor 2 (Y-axis) greatly changes to "positive” in the next 5 seconds, It is determined that the present apparatus 200 is mounted on the “left waist”.
- the value of sensor 2 (Y-axis) changes greatly to “negative” during the first 5 seconds
- the value of sensor 1 (X-axis) changes greatly to “positive” during the next 5 seconds. Determines that the device is attached to the back. Set. Then, the parameter is corrected according to the determined mounting position (S705).
- the parameter correction unit 14 reads the parameters from the parameter storage unit 15 based on the determination result of the mounting position determination unit 32 and outputs the parameters to the evaluation unit 12 in the same manner as in the first embodiment. I do.
- the evaluation unit 12 determines the behavior or posture of the wearer based on the acceleration data and the parameters input from the acceleration sensing unit 11.
- the mounting position is determined based on the predetermined behavior of the wearer, and the parameter is determined based on the mounting position. It is possible to make corrections.
- acceleration data for a predetermined action pattern is collected, and the acceleration data is evaluated.
- a predetermined voice guidance is given to the wearer after the correction trigger button is pressed, and the wearer acts in accordance with the voice guidance. An example will be described in which acceleration data is collected and the parameters are similarly corrected.
- FIG. 8 is a block diagram showing a configuration of the action or posture detection device 300 in the present embodiment.
- This device 300 includes an acceleration sensing unit 11, an evaluation unit 12, a parameter correction unit 14, a parameter storage unit 15, a correction trigger unit 31, a mounting position determination unit 32, and a voice guidance unit 41. .
- the same reference numerals are given to the same functional components as those in the second embodiment, and description thereof will be omitted.
- the voice guidance unit 41 receives a signal indicating that parameter correction is started from the correction trigger unit 31, the voice guidance unit 41 performs a predetermined motion to be performed at the time of correction, as in the case of the second embodiment. Then, the voice is instructed to the wearer.
- the predetermined movement is determined to move rightward for 5 seconds after pressing the button switch of the correction trigger section 31 and move forward for the next 5 seconds.
- the voice output of the voice guidance section 41 is turned on by pressing the potentiometer switch of the correction trigger section 31. "First, move to the right. 1, 2, 3, 4, 5. Next Move in the direction 1, 2, 3, 4, 5. Please stop. Finish. "
- the present apparatus 300 is provided with a control unit (for example, a CPU having a ROM, a RAM, and the like) that controls processing timing and the like in each unit.
- a control unit for example, a CPU having a ROM, a RAM, and the like
- FIG. 9 is a flowchart showing the flow of the operation of the present apparatus 300.
- the correction trigger section 31 sends a signal indicating that the correction is started to the acceleration sensing section 11 1 , To the mounting position determination unit 32 and the voice guidance unit 41.
- the voice guidance unit 41 gives an instruction by voice so that the wearer takes a predetermined action (S910).
- the acceleration sensing unit 11 collects acceleration data for 15 seconds after the switch is pressed (S702). The following processing is the same as that in FIG. 7 in the second embodiment (S703 to S705).
- the behavior or posture detection device 30 in the present embodiment By using 0, the wearer's operation load can be reduced by giving a voice to the predetermined posture or action to be performed by the wearer (guidance), and the erroneous operation during the above correction Can be reduced.
- FIG. 10 is a block diagram illustrating a functional configuration of the action or posture detection device 400 according to the present embodiment.
- This apparatus 400 includes an acceleration sensing unit 11, an evaluation unit 12, a parameter correction unit 14, a parameter storage unit 15, a correction trigger unit 31, and a mounting position determination unit 32.
- the correction trigger section 31 includes a voice input section 51 and a signal output determination section 52.
- the voice input section 51 of the correction trigger section 31 has a microphone (corresponding to the microphone 105 in FIG. 1 above) that converts the voice of the wearer into an electric signal, and converts the voice of the wearer into a signal waveform.
- the signal output determination unit 52 determines that, for example, when a voice (for example, “correction start”) having a certain amplitude (or waveform) is input, an input for instructing the start of correction is performed. Then, a signal indicating that the correction is started is output to the mounting position determination unit 32.
- a voice for example, “correction start”
- a signal indicating that the correction is started is output to the mounting position determination unit 32.
- the signal output determination unit 5 2 in order to remove the influence of the surrounding noise sound, for example, a response to only a specific sound may be performed by using a voice recognition process or the like.
- the present apparatus 400 is provided with a control unit (for example, a CPU having a ROM, a RAM, and the like) for controlling processing timing and the like in each of the above units. .
- a control unit for example, a CPU having a ROM, a RAM, and the like for controlling processing timing and the like in each of the above units.
- FIG. 11 is a flowchart showing the flow of the operation of the action or posture detection device 400.
- the signal output determination unit 52 instructs the start of correction based on the amplitude (or waveform) of the input voice. (S111), and if the level is higher than the specified level (S1102), a signal indicating the start of correction is output to the acceleration sensing unit 11 and the mounting position determination unit. 3 Send to 2.
- the following processing is the same as that in FIG. 7 in the second embodiment (S702 to S705).
- a trigger for starting parameter correction can be obtained from the voice of the wearer, so that even if the wear position is Even if it is located at a position where it is difficult to operate by hand, the operation of the wearer can be facilitated and erroneous operations during the above correction can be reduced.
- Embodiment 3 described above after the button switch (correction trigger button) is pressed, a predetermined voice guidance is given to the wearer, and the wearer acts in accordance with the voice guidance and accelerates.
- the embodiment in which the data is collected has been described, in the present embodiment, instead of receiving the push of the switch from the wearer, the wearer does not A description will be given of an embodiment in which the detection of a person wearing the apparatus on the body is used as a trigger for starting correction.
- FIG. 12 is a block diagram showing a configuration of the action or posture detection device 500 according to the present embodiment.
- This device 500 is composed of an acceleration sensing unit 11, an evaluation unit 12, a parameter correction unit 14, a parameter storage unit 15, a mounting detection unit 61, a correction trigger unit 31, a mounting position determination unit 32, and audio.
- a guidance section 4 1 is provided.
- the same reference numerals are given to the same functional configurations as in the third embodiment, and description thereof will be omitted.
- the mounting detector 61 includes a contact switch provided on the side that comes into contact with the human body when the device 500 is mounted, and determines whether or not the device is mounted on the wearer, The result is transmitted to the correction trigger section 31.
- the correction trigger section 3 1 receives the determination result from the mounting detection section 6 1, determines that the mounting position has changed when the state changes from the non-mounted state to the mounted state, and outputs the voice guidance section 4 1. A signal to start the correction is sent to.
- the voice guidance unit 41 receives the signal from the correction trigger unit 31, the voice guidance unit 41 gives voice to the wearer so as to perform a predetermined movement to be performed at the time of correction as in the case of the third embodiment. Instruct.
- the present apparatus 500 includes a control unit (for example, a CPU having a ROM, a RAM, and the like) that controls processing timing and the like in each unit.
- a control unit for example, a CPU having a ROM, a RAM, and the like
- FIG. 13 is a flowchart showing the operation flow of the present apparatus 500.
- the mounting detector 61 detects that the wearer has mounted the device. Upon detection (S1301: Yes), the correction trigger section 31 sends a signal indicating that correction is started to the acceleration sensing section 11, the mounting position determination section 32, and the voice guidance section 41. Send.
- the voice guidance unit 41 gives an instruction by voice so that the wearer takes a predetermined action (S910).
- the following processing is the same as that in FIG. 9 in the third embodiment (S702 to S705).
- a change in the mounting position is determined by automatically detecting that the wearer has removed or put on the device.
- the wearer is prompted for correction or the correction is automatically started, the operation burden on the wearer can be reduced, and erroneous operations during the correction can be reduced.
- Embodiment 5 described above an example has been described in which, after detecting that the wearer has worn the device on the body, the parameters are corrected based on a predetermined action.
- An embodiment will be described in which the above correction is performed based on a behavior pattern considered to be most likely to be an actual wearer's behavior, instead of performing correction based on a predetermined clear behavior. .
- FIG. 14 is a block diagram showing a functional configuration of the action or posture detection device 600 according to the present embodiment.
- the device 600 includes an acceleration sensing unit 11, an evaluation unit 12, a parameter correction unit 14, a parameter storage unit 15, a mounting detection unit 61, and a pattern classification histogram generation unit 71.
- the same reference numerals are given to the same functional configurations as in the fifth embodiment, and description thereof will be omitted.
- the pattern classification histogram forming section 71 receives a signal indicating that the wearer wears the device 600 from the wearing detection section 61
- the pattern classification histogram forming section 71 converts the direction of each direction inputted from the acceleration degree sensing section 11 into one. If the acceleration data shows periodicity in the change pattern of the acceleration data in at least one direction within a predetermined period of time and there is no large change, the amplitude and number of acceleration data per unit time are calculated. Sampling.
- the pattern classification histogram generation unit 71 has a certain assumption, for example, "usually, when considering the human walking state, the amplitude of the vertical acceleration change is the largest, and the certain period is Then, the amplitude of the change in acceleration in the front-back direction is the largest, and the change in the acceleration in the left-right direction is the smallest, and "normally, most people walk forward when walking forward.”
- the direction related to the sensor showing the largest amplitude in the histogram distribution per fixed time is the up-down direction
- the direction related to the sensor showing the next largest amplitude is the front-back direction
- the direction related to the sensor showing the smallest amplitude is The direction is determined to be the left direction, and it is determined which direction the sensors in each direction of the acceleration sensing section 11 are currently associated with.
- sensor 1 has the largest amplitude range at the peak of the histogram distribution, so the vertical direction, sensor 2 with the next largest amplitude range is the front-back direction, and sensor 3 with the smallest amplitude range is left and right. Judge as the direction.
- the present apparatus 600 includes a control unit (for example, a CPU having a ROM, a RAM, and the like) that controls processing timing and the like in each of the above units. .
- a control unit for example, a CPU having a ROM, a RAM, and the like
- FIG. 16 is a flowchart showing the operation flow of the present apparatus 600.
- the wearing detection unit 61 detects that the wearer wears the device 600 (S1301: Yes)
- the wearing detection unit 61 sends a signal indicating that correction is started to acceleration sensing. It is transmitted to the section 11 and the pattern classification histogram conversion section 71.
- the acceleration sensing unit 11 starts collecting acceleration data (S702).
- the pattern classification histogram generation unit 71 creates the above histogram based on the acceleration data collected by the acceleration sensing unit 11 (S 1601), and the wearer walks. It is determined whether or not it is moving (S 1602), and when it is determined that it is walking, the parameters of each sensor are corrected (S 705).
- the present invention can be applied to a device including an acceleration sensor for detecting a behavior, a posture, and the like mounted on a moving object such as a person, an animal, or an animal.
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- Oral & Maxillofacial Surgery (AREA)
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- Medical Informatics (AREA)
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Abstract
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US10/542,016 US20060112754A1 (en) | 2003-04-11 | 2004-04-09 | Method and device for correcting acceleration sensor axis information |
JP2005505377A JPWO2004091400A1 (ja) | 2003-04-11 | 2004-04-09 | 加速度センサ軸情報補正装置及び加速度センサ軸情報補正方法 |
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JP2003108477 | 2003-04-11 | ||
JP2003-108477 | 2003-11-04 |
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WO2004091400A1 true WO2004091400A1 (ja) | 2004-10-28 |
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PCT/JP2004/005117 WO2004091400A1 (ja) | 2003-04-11 | 2004-04-09 | 加速度センサ軸情報補正装置及び加速度センサ軸情報補正方法 |
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US (1) | US20060112754A1 (ja) |
JP (1) | JPWO2004091400A1 (ja) |
CN (1) | CN1774206A (ja) |
WO (1) | WO2004091400A1 (ja) |
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Also Published As
Publication number | Publication date |
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US20060112754A1 (en) | 2006-06-01 |
CN1774206A (zh) | 2006-05-17 |
JPWO2004091400A1 (ja) | 2006-07-06 |
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