JP5800855B2 - Portable electronic devices - Google Patents

Description

  The present invention relates to a portable electronic device for determining an activity amount.

  Some pedometers calculate calorie consumption (see, for example, Patent Document 1).

JP 2001-29323 A

  However, although the pedometer described in Patent Document 1 calculates calorie consumption based on the number of steps, the pitch of walking, and the weight, the calorie consumption due to movement is originally due to the slope (height difference) of the road on which the user has moved. It depends on you.

  Therefore, an object of the present invention is to provide a portable electronic device that can suitably calculate calorie consumption in consideration of a gradient (altitude difference) such as a road traveled by a user.

  A first aspect of the portable electronic device that achieves the above object includes: an acceleration sensor that detects acceleration; an atmospheric pressure sensor that detects atmospheric pressure; and a control unit that determines start and end of movement based on the acceleration. The control unit obtains an activity amount based on the acceleration and a difference value of the atmospheric pressure at the start and end of the movement.

  According to a second aspect of the portable electronic device that achieves the above object, when the control unit determines that the bicycle is moved by acceleration, the type of bicycle is set to be electric assist. The amount of activity is obtained without being based on the atmospheric pressure.

  According to the present invention, the amount of activity can be suitably obtained in consideration of a gradient (altitude difference) such as a road on which the user has moved.

1 is a block diagram illustrating a configuration of a mobile electronic device 1. 3 is a flowchart showing a flow of operations of the mobile electronic device 1.

  A first embodiment for carrying out the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the electronic device (portable electronic device) 1 includes a display unit 11, an operation unit 12, an atmospheric pressure sensor 14, an acceleration sensor 15, a storage unit 16, and a control unit 17.

  The display unit 11 includes a display device such as a liquid crystal display (Liquid Crystal Display) or an organic EL panel (Organic Electro-Luminescence panel). The display unit 11 displays characters, images, symbols, graphics, and the like.

  The operation unit 12 includes a plurality of buttons and is operated by the user. The operation unit 12 may be configured with a single button.

  The atmospheric pressure sensor 14 detects atmospheric pressure (atmospheric pressure). Since there is a certain relationship between the altitude from the ground and the atmospheric pressure, the control unit 17 described later can calculate (determine) the altitude from the atmospheric pressure detected by the atmospheric pressure sensor.

  The acceleration sensor 15 detects the direction and magnitude of acceleration acting on the electronic device 1 and outputs the detection result to the control unit 17. The acceleration sensor 15 is a 3G (three-dimensional) type that detects acceleration in the X-axis direction, the Y-axis direction, and the Z-axis direction.

  In addition, although the acceleration sensor 15 shall be comprised by a piezoresistive type and an electrostatic capacitance type, for example, it is not restricted to this. For example, the acceleration sensor 15 includes a piezoelectric element (piezoelectric type), a thermal detection type MEMS (Micro Electro Mechanical Systems) type, a servo type in which a movable coil is moved back by a feedback current, or strain caused by acceleration is strain gauged. It may be configured by a strain gauge type or the like that is measured by

  The storage unit 16 is used, for example, for arithmetic processing by the control unit 17 and is configured by a memory or the like. Moreover, the memory | storage part 16 memorize | stores Mets (METs: Metabolic equivalences) used in order to calculate calorie consumption (activity amount). Metz is a unit of strength that represents the intensity of physical activity, and indicates how many times the body metabolizes when it performs physical activity. The larger the Mets, the higher the intensity of exercise. The storage unit 16 stores Mets corresponding to the gradient (altitude difference). The memory | storage part 16 has memorize | stored the table (calculation formula) that Mets will become large, for example, if an uphill gradient becomes large. Moreover, the memory | storage part 16 has memorize | stored the table (calculation formula) that Mets will become small, for example, if a downward gradient becomes large.

  In addition, the storage unit 16 determines an acceleration pattern (movement start acceleration pattern) used to determine that the user of the mobile electronic device 1 has started moving, and determines that the user of the mobile electronic device 1 has finished moving. For example, an acceleration pattern (movement acceleration pattern) used for determining that the user of the mobile electronic device 1 is moving, and the like.

  The control unit 17 controls the entire portable electronic device 1 and is configured using a central processing unit (CPU) or the like. The control unit 17 determines the start and end of movement based on the acceleration. Moreover, the control part 17 calculates | requires an active mass based on the acceleration and the difference value of the atmospheric | air pressure at the time of a movement start and completion | finish.

  In the first embodiment, the control unit 17 calculates a difference value (atmospheric pressure difference) between the start and end of movement from the atmospheric pressure detected by the atmospheric pressure sensor 14. For example, assuming that the atmospheric pressure difference is an altitude difference of 10 [m] per 1 [hPa], the control unit 17 calculates the altitude difference at the start and end of movement from the calculated atmospheric pressure difference.

  Further, the control unit 17 determines from the acceleration detected by the acceleration sensor 15 whether the mobile electronic device 1 has started moving and whether it has ended moving. The control unit 17 compares the acceleration detected by the acceleration sensor 15 with the acceleration pattern stored in the storage unit 16. The control unit 17 compares the acceleration detected by the acceleration sensor 15 with the movement start acceleration pattern, and if they match or if the error is within a predetermined range, the user of the mobile electronic device 1 moves. Is determined to have started. When the control unit 17 determines that the user of the mobile electronic device 1 has started to move, the control unit 17 detects the atmospheric pressure by the atmospheric pressure sensor 14 as the start of movement, and stores it in the storage unit 16 as the atmospheric pressure at the start of movement. .

  In addition, after determining that the user of the mobile electronic device 1 has started moving, the control unit 17 compares the acceleration detected by the acceleration sensor 15 with the moving acceleration pattern, and if the two match, or the error Is within the predetermined range, it is determined that the user of the mobile electronic device 1 is moving, and if it does not match or the error exceeds the predetermined range, the user of the mobile electronic device 1 Determines that the movement has ended. When the control unit 17 determines that the user of the mobile electronic device 1 has finished the movement, the atmospheric pressure sensor 14 detects the atmospheric pressure at the end of the movement, and stores it in the storage unit 16 as the atmospheric pressure at the end of the movement. .

  Note that the determination of the start and end of movement is not limited to the above embodiment.

  Next, the operation flow of the portable electronic device 1 will be described with reference to the flowchart shown in FIG. In the flowchart illustrated in FIG. 2, the process starts when the state of the mobile electronic device 1 is stopped, for example, when the user holding the mobile electronic device 1 is stopped.

  In step ST1, the control unit 17 determines whether or not the mobile electronic device 1 has started moving. If it determines with the control part 17 having started the movement of the portable electronic device 1, it will detect atmospheric | air pressure in step ST2. Next, in step ST3, the control unit 17 determines whether or not the mobile electronic device 1 has finished moving. When determining that the mobile electronic device 1 has finished moving, the control unit 17 detects the atmospheric pressure in step ST4. In step ST <b> 5, the control unit 17 calculates an activity amount based on the acceleration and the difference value between the atmospheric pressures at the start and end of the movement. In the operation of FIG. 2, it is assumed that acceleration is measured (detected).

  Although a specific method for calculating the amount of activity is not described, the differential value of the atmospheric pressure is used to specify the mets stored in the storage unit 16. The acceleration detected by the acceleration sensor 15 is used to determine the number of steps, the walking distance, the moving state type (walking, bicycle movement), etc., when determining the amount of activity.

  Next, when it is determined by the acceleration detected by the acceleration sensor 15 that the movement state of the portable electronic device 1 is a bicycle movement, the control unit 17 sets the type of bicycle as electric assist (user setting). If so, determine the amount of activity, not based on atmospheric pressure. Because, when traveling on a road with a height difference with a bicycle with an electric assist, Mets, which is a parameter for determining the amount of activity, is compared to when traveling with a normal bicycle (bicycle without an electric assist) Because they are different. Even if you climb a hill with a power-assisted bicycle, there is no difference from the amount of activity when moving on a flat road, so if you set the type of bicycle to be power-assisted (user setting) It is preferable to determine the amount of activity without being based on atmospheric pressure. In addition, when the mets for bicycles with electric assistance is memorized, the amount of activity may be calculated using these mets.

DESCRIPTION OF SYMBOLS 1 Portable electronic device 11 Display part 12 Operation part 14 Barometric pressure sensor 15 Acceleration sensor 16 Storage part 17 Control part

Claims (3)

An acceleration sensor for detecting acceleration;
An atmospheric pressure sensor for detecting atmospheric pressure;
Based on the acceleration, it determines the start and end of the movement, with said acceleration, and the differential value of the pressure at the start and end of the movement, and a control unit for determining the amount of activity on the basis of,
When the control unit determines that the bicycle is moving based on the acceleration, if the type of bicycle is set as electric assist, the portable electronic device obtains the amount of activity without being based on the atmospheric pressure. . An acceleration sensor for detecting acceleration;
An atmospheric pressure sensor for detecting atmospheric pressure;
A controller that determines the start and end of movement based on the acceleration, and further determines whether the movement is by a bicycle based on the acceleration;
The controller is
As the setting of the type of bicycle, at least one of a bicycle without electric assistance and a bicycle with electric assistance can be set,
When it is determined that the movement is by bicycle,
When the bicycle without electric assist is set as the setting,
Based on the acceleration and the difference value of the atmospheric pressure at the start and end of the movement, an activity amount is obtained,
When the electric assist bicycle is set as the setting,
The portable electronic device which calculates | requires the said active mass based on the said acceleration and not based on the said atmospheric | air pressure. An acceleration sensor for detecting acceleration;
An atmospheric pressure sensor for detecting atmospheric pressure;
A control unit that determines whether the user is moving by bicycle based on the acceleration, and
The controller is
As the type of the bicycle, at least one of a bicycle without electric assistance and a bicycle with electric assistance can be set in advance,
When it is determined that the user is moving by bicycle,
When the bicycle without the electric assist is set,
An activity amount is obtained based on both the detected acceleration and the atmospheric pressure,
When the electric assist bicycle is set,
A portable electronic device that obtains the amount of activity based on the detected acceleration and not based on the detected atmospheric pressure.

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