JP2016192810A - Electronics - Google Patents

Abstract

An electronic apparatus capable of detecting a plurality of states other than walking while reducing the possibility of erroneous detection.
An electronic apparatus includes an acceleration measurement unit and a control unit. The acceleration measuring unit 16 measures acceleration. The control unit 17 determines that one of the plurality of moving states is in the moving state based on the measurement result of the acceleration by the acceleration measuring unit 16. When the predetermined process is executed, the control unit 17 does not determine the movement state based on the acceleration measurement result by the acceleration measurement unit 16.
[Selection] Figure 1

Description

  The present invention relates to an electronic device having an acceleration sensor.

  Some electronic devices have a function of counting the number of steps based on a value detected by an acceleration sensor (see, for example, Patent Document 1).

JP 2004-120688 A

  By the way, what detects other states besides a walk is calculated | required by the electronic device. In addition, electronic devices are required not to perform erroneous detection when detecting a state.

  An object of the present invention is to provide an electronic device capable of detecting a plurality of states other than walking while reducing the possibility of erroneous detection.

  An electronic apparatus according to the present invention includes an acceleration measuring unit that measures acceleration, a control unit that determines that one of a plurality of moving states is in a moving state based on an acceleration measurement result by the acceleration measuring unit, The control unit does not determine the movement state based on the measurement result of acceleration by the acceleration measurement unit when a predetermined process is executed.

  When the predetermined processing is executed, the control unit may not change the previous determination of the movement state when the determination of the movement state is not performed based on the acceleration measurement result by the acceleration measurement unit. preferable.

  The electronic device of the present invention includes a display unit and a control unit that causes the display unit to display the accumulated time of the movement state based on acceleration, and the control unit is configured to perform predetermined processing. It is preferable that the time during which the predetermined processing is performed is added to the accumulated time of the moving state displayed on the display unit so that the display unit does not display the accumulated time.

  The electronic device of the present invention is based on an acceleration measuring unit that measures acceleration, an acceleration measured by the acceleration measuring unit, and an average acceleration that is predicted to be applied to the electronic device when a predetermined process is executed. And a controller that determines that any one of the plurality of movement states is in a movement state.

  The case where the predetermined process is executed is a case where a predetermined application is executed, an operation unit arranged in the electronic device is operated, or a vibration motor that vibrates the electronic device is driven. Either is preferable.

  The plurality of movement states include a first movement state in which the user is walking, a second movement state in which the bicycle is moving, and a state in which the vehicle is moving on a transport device other than the bicycle. A third movement state.

  The present invention can provide an electronic apparatus capable of detecting a plurality of states other than walking while reducing the possibility of erroneous detection when a predetermined process is performed.

It is a block diagram which shows the structure of a mobile telephone. It is a figure which shows typically the detection result of an acceleration sensor. It is a figure for demonstrating determination of each state based on the detection result of an acceleration sensor. It is a figure for demonstrating the case where a state is determined based on the detection of the acceleration by an acceleration sensor. It is a figure which shows a mode when each state is displayed on the display part. It is a flowchart for demonstrating an example of operation | movement of a mobile telephone.

  Embodiments for carrying out the present invention will be described in detail with reference to the drawings. Below, the mobile telephone 1 is demonstrated as an example of an electronic device.

As shown in FIG. 1, the mobile phone 1 includes a display unit 11, an operation unit 12, a receiver 13, a microphone 14, a communication processing unit 15, an acceleration sensor 16 as an acceleration measurement unit, and a control unit 17. Prepare.
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 a user. The operation unit 12 may be configured by a single button. The operation unit 12 may be a soft key displayed on the display unit 11.
The receiver 13 converts the sound signal transmitted from the control unit 17 into sound and outputs the sound.
The microphone 14 converts the voice of the user or the like into a voice signal and transmits the voice signal to the control unit 17.

  The communication processing unit 15 includes an antenna 15a and a communication unit 15b. The communication method performed by the communication processing unit 15 is a wireless communication standard. For example, wireless communication standards include cellular phone communication standards such as 2G, 3G, and 4G.

  The acceleration sensor 16 detects the direction and magnitude of acceleration acting on the mobile phone 1 and outputs the detection result to the control unit 17. The acceleration sensor 16 is a three-axis (three-dimensional) type that detects acceleration in the X-axis direction, the Y-axis direction, and the Z-axis direction. The acceleration sensor 16 measures the acceleration (a) based on, for example, the force (F) applied from the outside of the mobile phone 1 and the mass (m) of the mobile phone 1 (acceleration (a) = force (F) / Mass (m)).

  The acceleration sensor 16 is not limited to a piezoelectric element (piezoelectric type), but may be based on a MEMS (Micro Electro Mechanical Systems) type such as a piezoresistive type, a capacitance type, a thermal detection type, or the like by moving a movable coil and a feedback current You may comprise by the servo type to return, the strain gauge type which measures the distortion which arises by acceleration with a strain gauge, etc.

  The control unit 17 controls the entire mobile phone 1 and is configured using a central processing unit (CPU) or the like. Details of the control unit 17 will be described later.

Here, processing of the detection result of the acceleration sensor 16 by the control unit 17 will be described.
As shown in FIG. 2, the control unit 17 includes an acceleration in the X-axis direction (A in FIG. 2), an acceleration in the Y-axis direction (B in FIG. 2), and an acceleration in the Z-axis direction (in FIG. 2). C) and a vector value (D in FIG. 2) obtained by combining the accelerations is transmitted as a detection result of the acceleration sensor 16. The control unit 17 logs the combined vector value, analyzes the logged data, and determines the state of the mobile phone 1.

Next, a case where the conventional technique is applied to the actual state and the state determined based on the detection result of the acceleration sensor will be described.
<Case 1>
First, the case where it is determined whether or not the vehicle is on a vehicle will be described. In the following description, the value is “+1” if the vehicle is on the vehicle, and “−1” if the vehicle is not on the vehicle.

  Since it is assumed that the vehicle is actually on the vehicle this time, as shown in A of FIG. 3, the state “−1” not on the vehicle changes to the state “+1” on the vehicle. If so, the judgment is correct.

As a result of the determination based on the detection result of the acceleration sensor, the result shown in B in FIG. 3 (the state “+1” on the vehicle) is obtained.
From this result, it can be seen that the determination of whether or not the vehicle is on is correct.

<Case 2>
Next, the case of determining the type of vehicle will be described. In the following description, the value is “+1” if the bicycle is being ridden, and is “−1” if the bicycle is being ridden on a transport device other than the bicycle.

  This time, it is assumed that the vehicle is actually on a transport aircraft other than a bicycle. Therefore, if the result shown in C in FIG. 3 is obtained, the determination is correct. Note that C in FIG. 3 is a result of determination based on a value (D in FIG. 3) detected from the acceleration sensor when actually riding a light vehicle.

  And the result shown to E in FIG. 3 was obtained by determination based on the detection result of an acceleration sensor. Looking at the result, after a certain period of time from an indeterminate state, it becomes “−1” (a state of riding a transport aircraft other than a bicycle), and then changes to “+1” (a state of riding a bicycle). After that, it has changed again to “−1” (a state where the vehicle is on a transport aircraft other than a bicycle). The situation changed to “+1” (portion F surrounded by a frame in FIG. 3) was actually a situation where the road surface condition was bad and the light car on board was swaying in small increments.

  Thus, in the conventional technology, in the case of vehicle determination using an acceleration sensor, the vehicle is erroneously determined to be a bicycle, even though the vehicle is being used, depending on the vehicle type and the road surface condition affecting the amount of vibration.

Similarly, even when a predetermined process is performed, the conventional technique makes an erroneous determination.
That is, when an application such as a rhythm game is executed on the mobile phone, the mobile phone may erroneously determine the vehicle due to the acceleration applied to the mobile phone. The rhythm game may be called a music game. A rhythm game is a game in which a user performs a predetermined action in accordance with rhythm or music. The predetermined operation is an operation such as touching the display unit or operating a button.

  In addition, for example, when the user operates the operation unit such as when creating a mail, or when the mobile phone vibrates due to a vibration function such as an incoming call or an alarm sounding, the mobile phone 1 is accelerated. Therefore, the mobile phone may erroneously determine the vehicle.

  As a specific example, when the operation unit is operated to create a mail, acceleration is applied to the mobile phone for a certain period of time as shown in FIG. In this case, the mobile phone becomes indistinguishable from the acceleration applied when riding on the vehicle, and in B shown in FIG. 4, it is determined that the mobile phone is on the vehicle.

  Therefore, the cellular phone 1 according to the present embodiment has a configuration that reduces the possibility of making an erroneous determination when a predetermined process is performed. The configuration will be described below.

As described above, the mobile phone 1 includes the acceleration sensor 16 and the control unit 17.
The acceleration sensor 16 measures acceleration applied to the mobile phone 1.
The control unit 17 determines that the state is one of a plurality of moving states based on the measurement result of acceleration by the acceleration sensor 16. When determining the movement state based on the measurement result of acceleration by the acceleration sensor 16, the control unit 17 determines based on an arbitrary method. For example, an acceleration magnitude or an acceleration pattern is assigned in advance to each of a plurality of movement states. When the magnitude or acceleration pattern of acceleration is detected based on the measurement result of the acceleration sensor 16, the control unit 17 determines the movement state based on the assignment. The plurality of movement states include a first movement state, a second movement state, and a third movement state. The first movement state is a state of walking. The second movement state is a state where the bicycle is moving. The third movement state is a state where the vehicle is moving by a transport aircraft other than a bicycle.

  When the predetermined process is executed, the control unit 17 does not determine the movement state based on the acceleration measurement result by the acceleration sensor 16. The case where the predetermined process is executed includes, for example, a case where a predetermined application is executed (executed), a case where the operation unit 12 disposed on the mobile phone 1 is operated, and a case where the mobile phone 1 is One of the cases where a vibration motor (not shown) to be vibrated is driven.

  The predetermined application is, for example, an application such as a rhythm game, mail, or document creation. When the predetermined application is executed (executed), for example, a screen for newly creating a mail may be displayed on the display unit 11 by executing the mail application.

The operation unit 12 may be operated, for example, when the operation unit 12 is actually operated. The operation unit 12 may be operated from when the operation unit 12 is operated until when the first time elapses after the operation unit 12 is not operated.
The vibration motor is driven, for example, when an incoming call or mail is received. The vibration motor is driven when an alarm sounds, for example.

  Thereby, the mobile phone 1 can prevent erroneous determination of the movement state when a predetermined process is performed (performed). The mobile phone 1 can determine each of the movement states based on the acceleration.

  The control unit 17 does not change the determination of the previous state when the predetermined state is executed and the determination of the movement state is not performed based on the measurement result of the acceleration by the acceleration sensor 16. For example, the control unit 17 does not change the first movement state to the second movement state or the third movement state when a predetermined process is executed when the first movement state is determined based on the acceleration.

  Thereby, since the mobile phone 1 maintains the movement state determined before the predetermined process is executed, it is possible to prevent the erroneous determination and the process based on the erroneous determination from being performed. .

  In addition, the control unit 17 causes the display unit 11 to display the accumulated time of the movement state determined based on the acceleration. For example, as shown in FIG. 5, the control unit 17 displays a first movement state display A (hereinafter referred to as display A) while walking and a second movement state while riding a bicycle on the display unit 11. Display B (hereinafter referred to as “display B”) and display C (hereinafter referred to as “display C”) of the third movement state on a vehicle (a transport device other than a bicycle, which corresponds to a car, a train, etc.) . The display A includes a schematic diagram in which the accumulated time, its calorie consumption (in the example shown in FIG. 5, 1 hour 23 minutes / 340 kcal) and the accumulated time are graphed. The display B includes a schematic diagram in which the accumulated time, its calorie consumption (in the example shown in FIG. 5, 56 minutes / 240 kcal) and the accumulated time are graphed. The display C includes a schematic diagram in which the accumulated time (in the example shown in FIG. 5, 1 hour and 45 minutes) and the accumulated time are graphed. The control unit 17 displays the pie chart D in which the daily action record is color-coded according to each state on the display unit 11.

When the predetermined processing is performed, the control unit 17 adds the time during which the predetermined processing has been performed to the accumulated time of the moving state displayed on the display unit 11 and does not cause the display unit 11 to display. The control unit 17 does not add the time during which the predetermined process is performed to any of the integrated time of display A, the integrated time of display B, and the integrated time of display C. That is, when a predetermined process is performed, the control unit 17 does not change the accumulated time of display A, the accumulated time of display B, and the accumulated time of display C as the accumulated time immediately before the predetermined process is performed. The accumulated time displayed on the display unit 11 is maintained. Further, the control unit 17 does not add the time during which the predetermined process is being performed to the pie chart D.
Thereby, the mobile phone 1 can prevent the accumulated time from being updated based on an erroneous determination.

  In addition, the control unit 17 selects one of a plurality of moving states based on the acceleration measured by the acceleration sensor 16 and the average acceleration predicted to be applied to the mobile phone 1 when a predetermined process is executed. It is determined that it is in the moving state.

  The average acceleration is stored in advance in the storage unit 18 (see FIG. 1). The average acceleration is obtained, for example, by conducting an experiment or the like in advance. The average acceleration may be obtained according to a predetermined process. For example, the average acceleration is obtained according to each of cases such as when a rhythm game is performed and when a new mail is created.

  The control unit 17 subtracts the average acceleration from the acceleration measured by the acceleration sensor 16 while a predetermined process is executed. The result of the subtraction is an acceleration relating to the first movement state, the second movement state, or the third movement state, obtained by subtracting the acceleration applied to the mobile phone 1 by a predetermined process.

  The control unit 17 may always subtract the average acceleration from the acceleration measured by the acceleration sensor 16 while a predetermined process is being executed. For example, the control unit 17 may subtract the average acceleration from the acceleration measured by the acceleration sensor 16 while a screen for newly creating a mail of the mail application is displayed on the display unit 11.

  The control unit 17 may subtract the average acceleration from the acceleration measured by the acceleration sensor 16 at a predetermined timing while a predetermined process is being executed. For example, when a rhythm game is being executed, the control unit 17 can predict the timing at which acceleration is applied to the mobile phone 1. For this reason, the control unit 17 may subtract the average acceleration from the acceleration measured by the acceleration sensor 16 at a timing when acceleration is expected to be applied to the mobile phone 1 while the rhythm game is being executed. Further, for example, when the vibration motor is driven, the control unit 17 knows the timing at which acceleration is applied to the mobile phone 1. For this reason, the control unit 17 may subtract the average acceleration from the acceleration measured by the acceleration sensor 16 at the timing when the vibration motor is driven.

The control unit 17 determines which of the first movement state, the second movement state, and the third movement state is based on the acceleration after subtraction.
Thereby, since the mobile phone 1 eliminates the influence of the predetermined processing, it is possible to prevent the mobile state from being erroneously determined.

  Next, an example of the operation of the mobile phone 1 will be described with reference to FIG.

  In step ST <b> 1, the control unit 17 determines the movement state based on the acceleration measured by the acceleration sensor 16.

  In step ST2, the control unit 17 determines whether or not the determination of the movement state has ended. That is, the control unit 17 determines whether an operation for ending the determination of the movement state has been performed. When the determination of the movement state is completed (YES), the control unit 17 ends the process. If the determination of the movement state is not completed (NO), the control unit 17 advances the process to step ST3.

  In step ST3, the control unit 17 determines whether or not a predetermined process has been executed. If the predetermined process is executed (YES), the control unit 17 advances the process to step ST4. When the predetermined process is not executed (NO), the control unit 17 returns the process to step ST1.

  In step ST4, the control unit 17 does not determine the movement state.

  In step ST5, the control unit 17 determines whether or not a predetermined process has been executed. When the predetermined process is executed (YES), the control unit 17 advances the process to step ST6. When the predetermined process is not executed (NO), the control unit 17 returns the process to step ST4.

  In step ST6, the control unit 17 determines whether the determination is finished. That is, the control unit 17 determines whether an operation for ending the movement state determination process has been performed. When determination is not complete | finished (NO), the control part 17 returns a process to step ST1. When the determination is completed (YES), the control unit 17 ends the process.

  Thereby, the mobile phone 1 can prevent erroneous determination of the movement state. The mobile phone 1 can determine each of the movement states based on the acceleration.

1 Mobile phone (electronic equipment)
11 Display Unit 12 Operation Unit 16 Acceleration Sensor (Acceleration Measurement Unit)
17 Control unit

Claims (6)

An acceleration measuring unit for measuring acceleration;
A control unit that determines that one of a plurality of moving states is in a moving state based on a measurement result of acceleration by the acceleration measuring unit, and
The electronic device does not determine a moving state based on an acceleration measurement result by the acceleration measuring unit when a predetermined process is executed. The control unit does not change the determination of the previous movement state when the predetermined process is executed and the determination of the movement state is not performed based on the measurement result of the acceleration by the acceleration measurement unit. 1. The electronic device according to 1. A display unit;
A control unit that displays the accumulated time of the moving state on the display unit based on the acceleration,
When a predetermined process is performed, the control unit adds the time during which the predetermined process has been performed to the accumulated time of the moving state displayed on the display unit and does not display the display unit on the display unit. Electronics. An acceleration measuring unit for measuring acceleration;
Based on the acceleration measured by the acceleration measuring unit and the average acceleration predicted to be applied to the electronic device when a predetermined process is executed, it is determined as one of a plurality of movement states A control unit,
Electronic equipment comprising. The case where the predetermined process is executed is a case where a predetermined application is executed, an operation unit arranged in the electronic device is operated, or a vibration motor that vibrates the electronic device is driven. The electronic device according to any one of claims 1 to 4. The plurality of movement states include a first movement state in which the user is walking, a second movement state in which the bicycle is moving, and a state in which the vehicle is moving on a transport device other than the bicycle. The electronic device according to any one of claims 1 to 5, wherein a third movement state is included.

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