WO2011108372A1 - 体動検出装置、および、体動検出装置の表示制御方法 - Google Patents
体動検出装置、および、体動検出装置の表示制御方法 Download PDFInfo
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- WO2011108372A1 WO2011108372A1 PCT/JP2011/053510 JP2011053510W WO2011108372A1 WO 2011108372 A1 WO2011108372 A1 WO 2011108372A1 JP 2011053510 W JP2011053510 W JP 2011053510W WO 2011108372 A1 WO2011108372 A1 WO 2011108372A1
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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
- A61B5/1123—Discriminating type of movement, e.g. walking or running
-
- 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
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
- A61B5/681—Wristwatch-type devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/742—Details of notification to user or communication with user or patient ; user input means using visual displays
- A61B5/7445—Display arrangements, e.g. multiple display units
-
- 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 body motion detection device and a display control method for the body motion detection device, and more particularly to a body motion detection device suitable for displaying according to a situation and a display control method for the body motion detection device. .
- the index selected by the user by the button operation is displayed regardless of the state of exercise. For example, while walking, the user wants to see the number of steps and the clock, while jogging, he wants to see the calories burned and the pitch. For this reason, when switching to the display according to the exercise state, the user has to perform a button operation each time.
- Patent Document 1 discloses a technique for determining an exercise content from acceleration and calculating an exercise amount corresponding to the exercise.
- Patent Document 1 Even when the technique of Patent Document 1 is used, there is a problem that the user needs to perform a button operation when switching to a display corresponding to the exercise state.
- the present invention has been made to solve the above-described problems, and one of its purposes is a body motion detection device capable of automatically switching display based on an operation state, and body motion detection. It is to provide a display control method for an apparatus.
- a body motion detection device includes a main body, a display provided in the main body, a control unit, and a detection unit that detects acceleration of the main body.
- the control unit is configured to determine the operation state of the user wearing the main body unit based on the acceleration detected by the detection unit, and the display state of the display unit based on the determination of the operation state by the determination unit And a display control unit for switching between.
- the body motion detection device determines the operating state of the user wearing the main body based on the detected acceleration, and the display state of the display unit is switched based on the determined operating state.
- the display control unit switches the display state of the display unit when the determination unit determines that the operation state has changed.
- the display state of the display unit is switched when the body motion detection device determines that the motion state has changed.
- the display can be automatically switched when the operating state changes.
- control unit further includes a detection unit that detects a change to a predetermined posture for viewing the display unit of the user based on the acceleration detected by the detection unit, and the determination unit is configured to perform the predetermined posture by the detection unit.
- the detection unit detects a change to a predetermined posture for viewing the display unit of the user based on the acceleration detected by the detection unit
- the determination unit is configured to perform the predetermined posture by the detection unit.
- the body motion detection device determines the operation state of the user wearing the main body based on the detected acceleration, and based on the detected acceleration, the predetermined posture for viewing the user's display unit
- the change to is detected and a change to a predetermined posture is detected
- it is determined that the operating state has changed and when it is determined that the operating state has changed, the display state of the display unit is switched.
- the display can be automatically switched.
- the detection unit further detects a change from a predetermined posture to another posture based on the acceleration detected by the detection unit, and the display control unit further detects a change to another posture by the detection unit.
- the display state is switched to the non-display state.
- the display state is not displayed. Switch to display state.
- the display state can be switched to the non-display state.
- the detection unit detects an acceleration in a direction in which the influence of the gravitational acceleration is greater than when the user is in a predetermined posture, and the detection unit detects the acceleration detected by the detection unit as the gravitational acceleration.
- a condition that can determine that the influence of is increased is detected, a change to a predetermined posture is detected.
- the body motion detection device detects an acceleration in a direction in which the influence of the gravitational acceleration is greater than in the other posture, and the detected acceleration is influenced by the gravitational acceleration.
- the condition that can be determined to be large is satisfied, a change to a predetermined posture is detected, and when a change to a predetermined posture is detected, it is determined that the operating state has changed, and the operating state has changed.
- the display state of the display unit is switched.
- the detection unit detects acceleration in the biaxial or triaxial direction, and the detection unit detects that the peak value of the combined acceleration obtained by synthesizing the biaxial or triaxial acceleration detected by the detection unit is a predetermined value.
- a change to a predetermined posture is detected when a condition that can be determined to be smaller in comparison is satisfied.
- the body motion detection device detects the acceleration in the biaxial or triaxial directions, and the representative value of the combined acceleration obtained by synthesizing the detected biaxial or triaxial acceleration is compared with a predetermined value.
- a change to a predetermined posture is detected, and when a change to a predetermined posture is detected, it is determined that the operating state has changed, and the operating state has changed.
- the display state of the display unit is switched.
- the combined acceleration of the detected acceleration is a body motion when the user is in a certain motion state and when the user is in a predetermined posture for viewing the display unit compared to when the user is not in the predetermined posture. Since the movement of the arm to which the main body of the detection device is attached becomes small, the combined acceleration is considered to be small. For this reason, it is possible to detect a change to a predetermined posture by determining that the representative value of the combined acceleration is smaller than the predetermined value.
- the display control unit switches the display state of the display unit to a display state corresponding to the operation state determined by the determination unit.
- the body motion detection device determines the operation state of the user wearing the main body based on the detected acceleration, and the display state of the display unit is determined based on the determined operation state.
- the display state is switched according to the operating state. As a result, it is possible to automatically switch to a display corresponding to the operation state based on the operation state.
- the operation state is an exercise state
- the determination unit determines a running state, a walking state, or a stop state as the exercise state
- the display control unit is the movement state determined by the determination unit
- the display is switched to a display suitable for traveling, and when the vehicle is in a walking state, the display is switched to a display suitable for walking, and when the vehicle is stopped, the display is switched to a display suitable for stopping.
- the present invention it is possible to automatically switch to a display suitable for the running state, the walking state, or the stopped state based on the operating state.
- the determination unit determines the operating state according to the acceleration waveform.
- the acceleration waveform changes depending on the operating state, and in the case of intense exercise, the number of waveforms in the acceleration waveform per predetermined time increases, and in the case of loose exercise, the number of acceleration waveforms per predetermined time increases. The number of acceleration waveforms is reduced. For this reason, an operation state can be determined according to a change in acceleration or the intensity of exercise.
- a display control method for a body motion detection device includes a body, a display provided in the body, a controller, and a detector that detects acceleration of the body.
- a method for switching the display state of the display unit of the motion detection device wherein the control unit determines the operation state of the user wearing the main body unit based on the acceleration detected by the detection unit, and the control unit displays Switching the display state of the display unit based on the determination of the operation state.
- the amount of activity that the body motion detection device can measure not only the number of steps but also the amount of activity in exercise and daily activities (for example, vacuuming, carrying light luggage, cooking, etc.)
- the embodiment will be described as being a total.
- the present invention is not limited to this, and the body motion detection device may be a pedometer capable of measuring the number of steps.
- FIG. 1 is an external view of an activity meter 100 according to the embodiment of the present invention.
- activity meter 100 mainly includes a main body portion 191 and a band portion 192.
- the band unit 192 is used to fix the activity meter 100 to the user's arm.
- the main body 191 includes a display switching / setting switch 131, an upper operation / memory switch 132, a lower operation / erase switch 133, and a part of the display unit 140 described later.
- a display 141 is provided.
- display 141 is configured by a liquid crystal display (LCD), but is not limited thereto, and may be another type of display such as an EL (ElectroLuminescence) display. Good.
- LCD liquid crystal display
- EL ElectroLuminescence
- FIG. 2A and FIG. 2B are diagrams showing a usage state of the activity meter 100 in this embodiment.
- activity meter 100 is attached to the wrist of the user's arm using band unit 192.
- FIG. 2A is a diagram showing a state where the user is jogging while waving the arm wearing the activity meter 100.
- FIG. 2B shows that a wrist is bent and the wrist wearing the activity meter 100 is placed on the front of the torso in order to confirm the contents displayed on the display 141 of the activity meter 100 during jogging. It is a figure which shows the state currently located.
- FIG. 3 is a block diagram showing an outline of the configuration of the activity meter 100 in this embodiment.
- activity meter 100 includes a control unit 110, a memory 120, an operation unit 130, a display unit 140, an acceleration sensor 170, and a power source 190. Further, the activity meter 100 may include an interface for communicating with an external computer.
- control unit 110 the memory 120, the operation unit 130, the display unit 140, the acceleration sensor 170, and the power source 190 are incorporated in the main body unit 191 described with reference to FIG.
- the operation unit 130 includes the display change / setting switch 131, the upper operation / memory switch 132, and the lower operation / erase switch 133 described with reference to FIG. 1, and sends an operation signal indicating that these switches have been operated to the control unit. 110.
- the acceleration sensor 170 is a semiconductor type of MEMS (Micro Electro Mechanical Systems) technology, but is not limited to this, and may be of another type such as a mechanical type or an optical type. In the present embodiment, acceleration sensor 170 outputs a detection signal indicating the acceleration in each of the three axial directions to control unit 110. However, the acceleration sensor 170 is not limited to the three-axis type, and may be one-axis or two-axis type.
- MEMS Micro Electro Mechanical Systems
- the acceleration sensor 170 is built in the wristwatch-type activity meter 100, but the activity meter 100 is mounted on the wrist of the user so that the main body 191 can be seen on the back side of the left hand.
- the X-axis direction of the acceleration sensor 170 is the direction of the connecting portion between the main body 191 and the band 192 on the little finger side when viewed from the main body 191 (in other words, on the display 141
- the Y-axis direction is the direction of the fingertip as viewed from the main body 191 (in other words, the display 141 has a clock face, 3 o'clock).
- the acceleration sensor 170 is incorporated so that the Z-axis direction is the inner side of the wrist when viewed from the main body 191.
- the memory 120 includes non-volatile memory such as ROM (Read Only Memory) (for example, flash memory) and volatile memory such as RAM (Random Access Memory) (for example, SDRAM (Synchronous Dynamic Random Access Memory)).
- ROM Read Only Memory
- RAM Random Access Memory
- SDRAM Synchronous Dynamic Random Access Memory
- the memory 120 includes program data for controlling the activity meter 100, data used for controlling the activity meter 100, setting data for setting various functions of the activity meter 100, and the number of steps and activities. Measurement result data such as quantity is stored every predetermined time (for example, every day). The memory 120 is used as a work memory when the program is executed.
- the control unit 110 includes a CPU (Central Processing Unit), and a detection signal from the acceleration sensor 170 according to an operation signal from the operation unit 130 according to a program for controlling the activity meter 100 stored in the memory 120. Based on the above, the memory 120 and the display unit 140 are controlled.
- a CPU Central Processing Unit
- the display unit 140 includes the display 141 described with reference to FIG. 1 and controls the display 141 to display predetermined information according to a control signal from the control unit 110.
- the power source 190 includes a replaceable battery, and supplies power from the battery to each unit that requires power to operate, such as the control unit 110 of the activity meter 100.
- FIG. 4 is a flowchart showing a flow of display processing executed by the activity meter 100 according to the first embodiment.
- control unit 110 executes an exercise state detection process.
- FIG. 5 is a flowchart showing the flow of the exercise state detection process executed by the activity meter 100 according to the first embodiment.
- control unit 110 calculates step number change n in the latest predetermined seconds (5 seconds in the present embodiment) based on the detection value from acceleration sensor 170.
- the step change n can be calculated by counting the number of peaks taking the maximum value among the changes in the acceleration graph of the most recent predetermined seconds.
- FIG. 7 is a graph showing a change in acceleration in the usage state of the activity meter 100 according to the first embodiment.
- the user jogs if the user of the activity meter 100 confirms the display on the display 141. It is a graph which shows the change of each acceleration detected value of a 3 axis direction when there is.
- the acceleration detection value in the X-axis direction has a maximum value nine times between about 2 seconds and about 7 seconds.
- the step change n in the latest 5 seconds at the time of 7 seconds about 9 steps can be calculated.
- step S112 the control unit 110 determines whether or not the step change n in the most recent predetermined seconds is less than a predetermined value n1 (2 steps in the present embodiment).
- step S113 the control unit 110 sets the exercise state flag to a state indicating “stop”. To do.
- the exercise state flag is a flag indicating what state the user's current exercise state is.
- step S114 the control unit 110 determines that the step change n in the most recent predetermined seconds is predetermined. It is determined whether or not the value is less than n2 (15 steps in the present embodiment).
- step S115 the control unit 110 sets the exercise state flag to a state indicating “walking”. To do.
- step S115 the control unit ends the motion state detection process and returns the process to be executed to the display process of the caller of this process.
- step S116 the control unit 110 indicates a state indicating “running” in the exercise state flag. To. After step S116, the control unit ends this motion state detection process, and returns the process to be executed to the display process of the caller of this process.
- the motion state detection process when executed, if the number of steps in the latest predetermined seconds (for example, 5 seconds) is less than a predetermined value n1 (for example, 2 steps), the motion state of the user is “stopped”. If the user's exercise state is “walking” and is greater than or equal to the predetermined value n2, the user's exercise state is determined to be “walking”. In this case, it is determined that the user's exercise state is “running”.
- the user's exercise state is any one of the three states of “stop”, “walking”, and “running”. "Or” walking “may be one of the two states, or may be any of the four or more states.
- the exercise state is determined based on the step change n in the most recent predetermined seconds of the user.
- the exercise state is determined based on the movement speed of the user.
- the exercise state may be determined based on the degree of change in acceleration, the exercise state may be determined based on the degree of change in calorie consumption, You may make it calculate an exercise state based on the numerical value of METs (Mets) which is a unit showing how many times the intensity of activity (activity intensity) is equivalent to the rest, or the activity intensity (METs) You may make it calculate an exercise state based on the numerical value of EX (exercise) which is a unit showing the quantity of the physical activity which took time.
- METs METs
- FIG. 6 is a flowchart showing the flow of the posture change detection process executed by the activity meter 100 according to the first embodiment.
- control unit 110 turns off the predetermined posture start flag and the predetermined posture end flag.
- the predetermined posture start flag is turned on when it is determined that the user has started the predetermined posture described with reference to FIG. 2B for confirming the display of the activity meter, and is otherwise turned off.
- Flag to be The predetermined posture end flag is a flag that is turned on when it is determined that the user has finished the predetermined posture, and is turned off when it is not.
- control unit 110 calculates the absolute value a1 of the latest acceleration in the Z-axis direction based on the detection value from the acceleration sensor 170.
- the Z-axis of the Z-axis is not swung without checking the contents displayed on the display 141 of the activity meter 100. Since the direction is substantially perpendicular to the vertical direction, the acceleration in the Z-axis direction is not significantly affected by gravitational acceleration.
- the direction of the Z axis is vertical. Since the direction approaches the direction parallel to the direction, the acceleration in the Z-axis direction is affected by the gravitational acceleration.
- the user can use the activity meter 100 as shown in FIG. It can be determined that the display 141 has changed to a predetermined posture for viewing.
- step 125 the controller 110 determines that the absolute value a1 of the acceleration in the latest Z-axis direction is a predetermined value ap (in the present embodiment, the detected value of the acceleration sensor 170, which is an index on the vertical axis of the graph of FIG. 7). 200) or more.
- ap in the present embodiment, the detected value of the acceleration sensor 170, which is an index on the vertical axis of the graph of FIG. 7). 200
- the detected acceleration value in the Z-axis direction is approximately zero.
- the absolute value a1 of the acceleration detection value in the Z-axis direction is the predetermined value ap. It can be seen that (in this embodiment, 200) or more.
- step S126 when it is determined that the absolute value a1 of the acceleration in the Z-axis direction is equal to or larger than the predetermined value ap (when YES is determined in step S125), in step S126, the control unit 110 determines the predetermined posture start flag. Turn on the. Thereafter, the control unit 110 returns the process to be executed to the display process of the caller of this posture change detection process.
- step S127 the control unit 110 turns on the predetermined posture end flag. Thereafter, the control unit 110 returns the process to be executed to the display process of the caller of this posture change detection process.
- the present invention is not limited to this, and the absolute value of the average value of acceleration in the Z-axis direction in the latest several cycles (for example, one cycle (one step) or a plurality of cycles (multiple steps)) is a predetermined value or more. It may be determined based on whether or not there is.
- step S131 the control unit 110 determines whether or not the exercise state flag of the user set in step S110 indicates “stop”.
- step S132 the control unit 110 determines whether or not the predetermined posture start flag is set to an on state in step S120, that is, the predetermined posture. It is determined whether or not the start of the is detected.
- step S133 the control unit 110 displays an operation signal indicating that the display change / setting switch 131 has been operated by the user. Is determined to be input from the operation unit 130 to the control unit 110, thereby determining whether or not an operation to turn on the display 141 is performed.
- step S134 the control unit 110 transmits a control signal to the display unit 140 so that the display item at the time of stoppage is displayed on the display 141.
- the display items at the stop are, for example, the number of steps and the time.
- step S134 by executing step S134, for example, “10568 steps” as the number of steps and “13:15” as the time are displayed on the display 141 of the activity meter 100.
- step S141 the control unit 110 displays the user's setting set in step S110. It is determined whether or not the exercise state flag indicates “walking”.
- step S142 the control unit 110 determines whether or not the predetermined posture start flag is set to the on state in step S120, that is, the predetermined posture. It is determined whether or not the start of the is detected.
- step S143 the control unit 110 controls the display unit 140 to display a display item during walking on the display 141.
- the display item at the time of walking is, for example, the number of steps and calorie consumption or walking time.
- step S141 When it is determined that the user's exercise state flag does not indicate “walking” (when NO is determined in step S141), that is, when the user's exercise state is “running”, in step S151, the control unit 110 In step S120, it is determined whether or not the predetermined posture start flag is set to the on state, that is, whether or not the start of the predetermined posture is detected.
- step S152 the control unit 110 controls the display unit 140 to display a display item during travel on the display 141.
- the display items at the time of walking are, for example, average hourly speed and consumed calories, or remaining consumed calories up to the target value.
- control unit 110 advances the process to be executed to step S161.
- step S161 the control unit 110 determines whether or not an operation signal indicating that the display change / setting switch 131 has been operated by the user is input from the operation unit 130 to the control unit 110, thereby displaying the display 141 on the display 141. It is determined whether or not an operation for switching contents has been performed.
- step S162 the control unit 110 controls the display unit 140 to display the switched display item. Send.
- the time since the start of the exercise the distance from the start of the exercise, the calorie consumption after the start of the exercise, the average speed since the start of the exercise
- One or more pieces of information among the information such as the amount of Ex since the start of exercise, the number of steps of the day, the moving distance of the day, the calorie consumption of the day, and the amount of fat burning of the day are sequentially switched. Displayed.
- step S161 When it is determined that the operation of switching the display content of the display 141 has not been performed (when NO is determined in step S161), and after step S162, in step S171, the control unit 110 performs a predetermined posture end flag in step S120. Is determined to be on, that is, whether or not the end of the predetermined posture is detected.
- step S172 the control unit 110 displays an operation signal indicating that the lower operation / erase switch 133 has been operated by the user. Is determined to be input from the operation unit 130 to the control unit 110, thereby determining whether or not an operation for turning off the display on the display 141 has been performed.
- step S173 the control unit 110 performs step S134, step S143, step S152, or step In S162, it is determined whether or not a predetermined amount (for example, 1 minute) has elapsed since the display on the display 141 was turned on.
- a predetermined amount for example, 1 minute
- step S171 When it is determined that the end of the predetermined posture has been detected (when YES is determined at step S171), when it is determined that an operation for turning off the display of the display 141 is performed (when YES is determined at step S172), and If it is determined that a predetermined amount of time has elapsed since the display 141 is turned on (YES in step S173), the control unit 110 turns the display 141 off in step S174. A control signal is transmitted to the display unit 140.
- control unit 110 returns the process to be executed to the caller process of this display process.
- FIG. 8 is a flowchart showing the flow of the posture change detection process executed by the activity meter according to the second embodiment. Referring to FIG. 8, step S181 is the same as step S131 of FIG.
- control unit 110 calculates the peak value a1 of the latest three-axis combined acceleration based on the detection value from the acceleration sensor 170.
- FIG. 2A when the user is waving his arm without checking the contents displayed on the display 141 of the activity meter 100 when jogging, the above-described FIG. As shown in the figure, when the user is jogging, the movement of the arm is larger than the state in which the content displayed on the display 141 of the activity meter 100 is confirmed, and the acceleration in the three-axis directions The value of the resultant acceleration becomes larger.
- the representative value (for example, peak value, average value of one cycle, etc.) of the composite acceleration in the three-axis directions is displayed on the display 141 of the activity meter 100 with the movement of the arm being reduced.
- a predetermined value ap that can be determined to confirm the content
- control unit 110 determines that peak value a1 of the latest combined acceleration is a predetermined value ap (in this embodiment, 750 in the detection value of acceleration sensor 170, which is an index on the vertical axis of the graph of FIG. 9). It is determined whether or not:
- FIG. 9 is a graph showing a change in the resultant acceleration in the usage state of the activity meter in the second embodiment. Referring to FIG. 9, this graph shows a change in combined acceleration obtained by combining the accelerations in the three-axis directions of the graph described in FIG.
- the peak value a1 of the resultant acceleration is always the predetermined value ap (in this embodiment). 750) or more, when the user is jogging while confirming the display on the display 141 of the activity meter 100 after about 7 seconds, the peak value a1 of the resultant acceleration is always It can be seen that the value is less than the predetermined value ap.
- step S186 when it is determined that the peak value a1 of the resultant acceleration is equal to or smaller than the predetermined value ap (when YES is determined in step S185), in step S186, the control unit 110 turns on the predetermined posture start flag. To. Thereafter, the control unit 110 returns the process to be executed to the display process of the caller of this posture change detection process.
- step S187 If it is determined that the peak value a1 of the combined acceleration is not less than or equal to the predetermined value ap (when NO is determined in step S185), in step S187, the control unit 110 turns on the predetermined posture end flag. Thereafter, the control unit 110 returns the process to be executed to the display process of the caller of this posture change detection process.
- the present invention is not limited to this, and the determination is made based on whether or not the average value of the resultant acceleration in the most recent several cycles (for example, one cycle (one step) or a plurality of cycles (a plurality of steps)) is a predetermined value or more. You may make it do.
- FIG. 10 is a flowchart showing the flow of the posture change detection process executed by the activity meter according to the third embodiment.
- step S191 is the same as step S131 in FIG.
- the control unit 110 calculates the average value a1 of the peak value of the combined acceleration for the most recent predetermined seconds (for example, 2 seconds from 2 seconds before to the present). calculate.
- control unit 110 averages the peak value of the resultant acceleration for a predetermined second before that (for example, 2 seconds from 4 seconds to 2 seconds before).
- the value a2 is calculated. Note that the detected values of acceleration for the most recent predetermined seconds and for the previous predetermined seconds are stored in the memory 120.
- step S194 the control unit 110 determines whether or not the absolute value of the difference between the average values a2 and a1 of the peak values of the resultant acceleration is equal to or greater than a predetermined value ad. That is, it is determined whether or not the average value of the peak values of the combined acceleration has changed greatly (more than the predetermined value ad) by comparing the latest predetermined seconds with the previous predetermined seconds.
- the timing at which the average value of the peak values of the combined acceleration changes greatly can be considered as the timing at which some posture change has occurred.
- the peak value of the latest combined acceleration is determined in step S195. It is determined whether or not a1 is equal to or less than a predetermined value ap (in this embodiment, 750 in the detected value of the acceleration sensor 170, which is an index on the vertical axis of the graph of FIG. 9).
- step S196 the control unit 110 turns on the predetermined posture start flag. Thereafter, the control unit 110 returns the process to be executed to the display process of the caller of this posture change detection process.
- step S197 If it is determined that the peak value a1 of the resultant acceleration is not less than or equal to the predetermined value ap (when NO is determined in step S195), in step S197, the control unit 110 turns on the predetermined posture end flag. Thereafter, the control unit 110 returns the process to be executed to the display process of the caller of this posture change detection process.
- step S194 to step S197 it can be determined that the average value of the peak value of the combined acceleration has changed significantly and it can be determined that the peak value of the combined acceleration is small.
- the predetermined posture is determined based on the average value of the peak values of the composite acceleration for the most recent predetermined seconds and the average value of the peak values of the composite accelerations for the previous predetermined seconds, respectively. Judged whether or not started or ended.
- the present invention is not limited to this, and the determination may be made based on the average value of the peak values of the combined acceleration of the two most recent cycles and the average value of the peak values of the combined acceleration of the two preceding cycles. Further, instead of determining based on the average value of the peak values of the combined acceleration, the combined acceleration of several cycles (for example, one cycle (one step) or a plurality of cycles (a plurality of steps)) of the combined acceleration. You may make it judge based on an average value.
- the change to a predetermined posture for the user to view the display 141 of the activity meter 100 is determined based on a predetermined condition.
- the present invention is not limited to this.
- the detection of each acceleration sensor 170 is performed.
- the value is actually measured using the activity meter 100, and the threshold value of the determination value based on the acceleration that is different for each user is calculated from the detected values.
- the activity meter 100 may be configured so that a change in posture can be detected.
- control unit 110 executes the processing from FIG. 4 to FIG. 6, the processing in FIG. 8, and the processing in FIG. The function was demonstrated.
- the present invention is not limited to this, and a predetermined function exhibited by executing the processing of the software may be performed in the hardware circuit.
- the invention has been described as an apparatus for the activity meter 100.
- the present invention is not limited to this, and the invention may be understood as a method executed by the device of the activity meter 100, or the invention may be understood as a program executed by the device of the activity meter 100. .
- the triaxial acceleration sensor 170 is used.
- the present invention is not limited to this, and a uniaxial or biaxial acceleration sensor may be used as long as the same determination can be made based on the detection value of the acceleration sensor.
- the activity meter 100 is attached to the user's arm in order to detect a change in the user's predetermined posture for viewing the display 141.
- the present invention is not limited to this, and a change to a predetermined posture is detected based on a change in acceleration detected by the acceleration sensor 170 when the activity meter 100 is mounted at another location. May be.
- the present invention is not limited to this, and any other type may be used as long as the display state of the display 141 is switched based on determination of an operation state (motion state or posture) based on acceleration.
- the display state of the display 141 may be changed to a display state corresponding to the motion state or posture determined by the acceleration regardless of the change to a predetermined posture and the change of the motion state. Specifically, when a display operation is performed by the user, the display state of the display 141 is changed to a display state corresponding to the exercise state determined by the acceleration. Thereby, it is possible to automatically switch to the display according to the operation state.
- the display state is not switched to a display state corresponding to the changed motion state or posture, but is switched to a display state unrelated to the changed motion state or posture. It may be.
- the display can be automatically switched when the operating state changes.
- the motion state is determined according to the number of waves per predetermined time of the acceleration waveform.
- the present invention is not limited to this, and any body that can be determined from an acceleration peak value, an acceleration pitch, or an acceleration, for example, as long as it can determine an operation state such as an exercise state and a posture according to an acceleration waveform. It may be determined according to the angle of the part 191.
- 100 activity meter 110 control unit, 120 memory, 130 operation unit, 131 display switching / setting switch, 132 upper operation / memory switch, 133 lower operation / erase switch, 140 display unit, 141 display, 170 acceleration sensor, 190 power supply 191 body part, 192 band part.
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Abstract
Description
この発明に従えば、動作状態によって加速度の波形に変化が生じ、また、激しい運動の場合は、所定時間当りの加速度の波形の波の数が多くなり、緩い運動の場合は、所定時間当りの加速度の波形の数が少なくなる。このため、加速度の変化、または、運動の強度に応じて、動作状態を判定することができる。
図1は、この発明の実施の形態における活動量計100の外観図である。図1を参照して、活動量計100は、本体部191と、バンド部192とから主に構成される。バンド部192は、活動量計100をユーザの腕に固定するために用いられる。
第2の実施の形態は、第1の実施の形態の図6で説明した姿勢変化検出処理の一部を変更したものである。このため、他の部分については、第1の実施の形態と共通であるので重複する説明は繰返さない。
第3の実施の形態は、第1の実施の形態の図6で説明した姿勢変化検出処理の一部を変更したものである。このため、他の部分については、第1の実施の形態と共通であるので重複する説明は繰返さない。
(1) 前述した実施の形態においては、ユーザが活動量計100のディスプレイ141を見るための所定姿勢への変化を、予め定められた条件に基づいて判断するようにした。
Claims (10)
- 本体部(191)と、
前記本体部に設けられる表示部(141)と、
制御部(110)と、
前記本体部の加速度を検出する検出部(170)とを備え、
前記制御部は、
前記検出部によって検出された前記加速度に基づき、前記本体部を装着するユーザの動作状態を判別する判別手段(ステップS110,S120,S131,S132,S141,S142)と、
前記判別手段による前記動作状態の判別に基づいて、前記表示部の表示状態を切替える表示制御手段(ステップS134,S143,S152)とを含む、体動検出装置(100)。 - 前記表示制御手段は、前記判別手段によって前記動作状態が変化したと判別された場合に、前記表示部の表示状態を切替える(ステップS134,S143,S152)、請求項1に記載の体動検出装置。
- 前記制御部は、
前記検出部によって検出された前記加速度に基づき、前記ユーザの前記表示部を見るための所定の姿勢への変化を検知する検知手段(ステップS120,S122,S125、S182,S185,S192,S193,S194,S195)をさらに含み、
前記判別手段は、前記検知手段によって前記所定の姿勢への変化が検知されたとき(ステップS125、S185,S194,S195でYESの場合)に、前記動作状態が変化したと判別する、請求項2に記載の体動検出装置。 - 前記検知手段は、さらに、前記検出部によって検出された前記加速度に基づき、前記所定の姿勢から他の姿勢への変化を検知し(ステップS120,S122,S125、S182,S185,S192,S193,S194,S195)、
前記表示制御手段は、さらに、前記検知手段によって前記他の姿勢への変化が検知されたとき(ステップS125、S185,S195でNOの場合)に、前記表示状態を非表示の状態に切替える(ステップS174)、請求項3に記載の体動検出装置。 - 前記検出部は、前記ユーザが前記所定の姿勢のときには他の姿勢のときよりも重力加速度の影響が大きくなる方向の加速度を検出し(ステップS122)、
前記検知手段は、前記検出部によって検出された前記加速度が重力加速度の影響が大きくなったと判断できる条件を満たしたとき(ステップS125でYESの場合)に、前記所定の姿勢への変化を検知する、請求項3に記載の体動検出装置。 - 前記検出部は、2軸または3軸方向の加速度を検出し(ステップS182,S192)、
前記検知手段は、前記検出部によって検出された前記2軸または3軸方向の加速度を合成した合成加速度の代表値が所定値と比較して小さくなったと判断できる条件を満たしたとき(ステップS185,S195でYESの場合)に、前記所定の姿勢への変化を検知する、請求項3に記載の体動検出装置。 - 前記表示制御手段は、前記表示部の表示状態を、前記判別手段によって判別された前記動作状態に応じた表示状態に切替える(ステップS131,S134,S141,S143,S152)、請求項1に記載の体動検出装置。
- 前記動作状態は、運動状態であり、
前記判別手段は、前記運動状態として走行状態、歩行状態または停止状態を判別し(ステップS110,S111~S116)、
前記表示制御手段は、前記判別手段によって判別された前記運動状態が前記走行状態である場合(ステップS131でNOでありステップS141でNOの場合)、走行時に適した表示に切替え(ステップS152)、前記歩行状態である場合(ステップS131でNOでありステップS141でYESの場合)、歩行時に適した表示に切替え(ステップS143)、前記停止状態である場合(ステップS131でYESの場合)、停止時に適した表示に切替える(ステップS134)、請求項7に記載の体動検出装置。 - 前記判別手段は、前記加速度の波形に応じて、前記動作状態を判別する(ステップS110,S111~S116,S120,S121~S127,S181~S187,S192~S197)、請求項1に記載の体動検出装置。
- 本体部(191)と、前記本体部に設けられる表示部(141)と、制御部(110)と、前記本体部の加速度を検出する検出部(170)とを備える体動検出装置(100)の前記表示部の表示状態を切替える表示制御方法であって、
前記制御部が、前記検出部によって検出された前記加速度に基づき、前記本体部を装着するユーザの動作状態を判別するステップ(ステップS110,S120,S131,S132,S141,S142)と、
前記制御部が、前記動作状態の判別に基づいて、前記表示部の表示状態を切替えるステップ(ステップS134,S143,S152)とを含む、体動検出装置の表示制御方法。
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