JP2014045325A - State detection device, state detection method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a state detection device which can reduce delay in detection time and reduce misdetection.SOLUTION: The state detection device comprises: a first operation determination section 31 which determines that a mobile phone 1 is operated, when operation of the mobile phone 1 exceeds a predetermined first operation amount; and a second operation determination section 32 which determines whether or not the operation of the mobile phone 1 exceeds a second operation amount whose operation amount is less than that of the first operation amount when the first operation determination section 31 determines that operation of the device itself does not exceed the predetermined first operation amount, and determines that the mobile phone 1 is not operated when the operation of the mobile phone 1 does not exceed the second operation amount.

Description

  The present invention relates to a state detection device, a state detection method, and a program suitable for use in detecting the walking state of a user carrying the device.

  The mobile phone described in Patent Document 1 includes a step detection sensor and an acceleration sensor, and when the movement state is not detected by the acceleration sensor even when vibration is detected by the step detection sensor, the step detection sensor is Disable the detected vibration. The detection of the movement state by the acceleration sensor is performed when the acceleration sensor detects acceleration in the traveling axis direction.

  The mobile phone described in Patent Document 2 includes a three-axis acceleration sensor, a walking measurement unit, a stable walking detection unit, and a position detection unit. The triaxial acceleration sensor outputs the detection result to the walking measurement unit and the stable walking detection unit. The gait measuring unit measures the number of steps based on the detection result of the triaxial acceleration sensor. The stable walking detection unit determines whether walking is stable based on the detection result of the triaxial acceleration sensor. Then, when the walking is stable, the mobile phone stops the operation of the microcomputer constituting the walking measurement unit, and calculates the number of steps using the detection result of the position detection unit and the like.

  The pedometer described in Patent Literature 3 generates a binarized walking signal based on the output signal of the acceleration sensor. This pedometer counts the number of steps based on the walking signal. Further, this pedometer determines that the user is walking when the walking signal continues for 5 to 6 seconds. Moreover, this pedometer determines that walking is stopped when the walking signal is not generated for, for example, 2 seconds or more.

JP 2010-28675 A JP 2010-72956 A JP 2011-44135 A

  As described above, the pedometer described in Patent Document 3 detects a walking stop state when a walking signal is not generated for two seconds or more, for example. For this reason, for example, a delay of 2 seconds occurs after the walking stop state is actually detected until it is detected. However, when trying to shorten this delay, for example, when the user makes a U-turn or goes up and down the stairs, the walking stop signal is likely to be erroneously detected. . That is, there is a problem that it is difficult to reduce false detections when the detection time delay is reduced.

  The present invention has been made in consideration of the above circumstances, and an object thereof is to provide a state detection device, a state detection method, and a program that can solve the above-described problems.

  In order to solve the above-described problem, the state detection device of the present invention includes a first operation determination unit that determines that the device has operated when the movement of the device exceeds a predetermined first operation amount; When it is determined by the first operation determination unit that the movement of the own device does not exceed a predetermined first operation amount, the second operation amount is smaller than the first operation amount. A second operation determining unit that determines whether or not the own device is not operating when the movement of the own device does not exceed the second operation amount.

  Further, the state detection method of the present invention includes a first operation determination step in which the state detection device determines that the device has operated when the movement of the device exceeds a predetermined first operation amount; When it is determined in the first operation determining step that the movement of the own device does not exceed a predetermined first operation amount, the second operation amount is smaller than the first operation amount. A second operation determining step for determining whether or not the own device is not operating when the movement of the own device does not exceed the second operation amount.

  Further, the program of the present invention provides a first operation determining means for determining that the own device has operated when the movement of the own device exceeds a predetermined first operation amount, the first operation determining. If it is determined by the means that the movement of the own apparatus does not exceed a predetermined first movement amount, whether or not the movement of the own apparatus exceeds a second movement amount smaller than the first movement amount. And when the movement of the own device does not exceed the second operation amount, the program is caused to function as a second operation determining unit that determines that the own device is not operating.

  In the present invention, when it is determined that the movement of the own apparatus is equal to or less than the first momentum and the first motion determination unit has been operated, the second motion determination is not the elapsed time since the first momentum is decreased. The unit determines that the own device is not operating when the movement of the own device is equal to or less than the second momentum less than the first momentum. According to this configuration, for example, even when the detection time is set to a constant value, the setting of detection of the stop state is performed by further changing the value of the second momentum serving as a determination criterion when detecting that the operation is not performed. Can be fine-tuned. That is, the setting for detecting the state of the device itself can be made more finely, and the delay of the detection time can be reduced more easily.

It is the block diagram which showed the structural example of the mobile telephone as one Embodiment of this invention. FIG. 2 is a functional block diagram illustrating a feature of the present invention in the mobile phone 1 shown in FIG. 1 divided into a plurality of blocks. 3 is a flowchart for explaining the flow of processing in the mobile phone 1 shown in FIGS. 1 and 2; FIG. 3 is a state transition diagram for explaining the transition of the operation state of the mobile phone 1 shown in FIGS. 1 and 2. It is the block diagram which showed the basic structural example of embodiment of this invention. It is the graph which showed an example of the experimental result based on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration example of a mobile phone 1 as an embodiment of the present invention. The mobile phone 1 shown in FIG. 1 includes a CPU 10, an input device 11, an output device 12, a pedometer 15, an acceleration sensor 16, a communication device 17, and a storage device 18.

The CPU (central processing unit) 10 executes a predetermined calculation process by executing a program stored in the storage device 18. For example, the CPU 10 performs processing for detecting the walking state (walking or walking stopped state) of the user carrying the mobile phone 1 based on the output of the pedometer 15 and the output of the acceleration sensor 16. Further, for example, the CPU 10 performs a process of causing the output device 12 to make a predetermined notification corresponding to an incoming call such as a voice call or an e-mail.
Further, the CPU 10 performs control according to the calculation processing result in accordance with a predetermined program. The program is stored in the storage device 18. By registering each setting in the storage device 18 as this program, the CPU 10 can execute processing according to the determined setting.

  The input device 11 includes a plurality of keys, an operation unit such as a touch panel formed integrally with a display device in the output device 12, a voice input unit such as a microphone, and the like.

  The output device 12 includes a display unit such as a liquid crystal panel, a display unit such as an LED (light emitting diode), an output unit such as a sound output unit such as a speaker, a vibration generation unit including a small motor for a vibrator, and the like. Has been.

  The pedometer 15 includes one or more acceleration sensors that detect the movement of the mobile phone 1 and a signal processing circuit that processes detection signals of the one or more acceleration sensors. The acceleration sensor included in the pedometer 15 detects acceleration of one to three axes and outputs a detection signal having a value corresponding to the magnitude of acceleration in each axis direction. The signal processing circuit included in the pedometer 15 performs predetermined waveform processing on the detection signal output from one or a plurality of acceleration sensors, further binarizes using a predetermined threshold value, and converts the signal into a pulse signal. Count the number of signal generations. The signal processing circuit included in the pedometer 15 can be configured using, for example, a microprocessor that performs signal processing by executing a predetermined program. Further, the count value of this pulse signal by the pedometer 15 is a value representing the number of steps of the user carrying the mobile phone 1. When the pedometer 15 receives a predetermined control signal from the CPU 10, the pedometer 15 outputs a step value representing the counted number of steps to the CPU 100.

  The acceleration sensor 16 includes one or a plurality of acceleration sensors that detect the movement of the mobile phone 1. The acceleration sensor 16 detects the acceleration of one to three axes and corresponds to the magnitude of the acceleration in each axis direction. A detection signal having a value is output. The acceleration sensor 16 outputs the detection signal to the CPU 10. This detection signal is used, for example, for observing the orientation, tilt, movement, etc. of the mobile phone 1. Further, the acceleration sensor 16 operates by switching between a start state and a stop state according to a predetermined control signal input from the CPU 10. In the stop state, which is one of the two operation states, the acceleration sensor 16 can reduce power consumption.

  The communication device 17 performs wireless communication by connecting to a predetermined mobile phone network, a wireless LAN (local area network), or the like.

  The storage device 18 has a volatile and non-volatile memory, stores a program executed by the CPU 10, and stores data used when the CPU 10 performs a predetermined process. In the storage device 18, for example, the step value output from the pedometer 15 is stored. In addition, the storage device 18 stores the time and content of the notification and the input device 11 by the user as a response to the notification regarding the notification made when the output device 12 receives a voice call, e-mail or the like to the user. And the contents of the operation, the detection result of the walking state by the CPU 10 and the like are stored.

  Note that the mobile phone 1 is not limited to the configuration shown in FIG. 1, and includes, for example, configurations such as a position detection unit that uses a GPS (Global Positioning System), an imaging unit that captures still images and moving images, and the like. May be. Further, the acceleration sensor included in the pedometer 15 and the acceleration sensor 16 may have any configuration such as a semiconductor type, a mechanical type, and an optical type. Further, each of the pedometer 15 and the acceleration sensor 16 may individually have an acceleration sensor, or may share the same acceleration sensor. That is, for example, the pedometer 15 can be configured to binarize and count the detection signal of the acceleration sensor 16. Further, part or all of the signal processing function in the pedometer 15 can also be realized by a software function by the CPU 10.

  Next, basic functions of the mobile phone 1 shown in FIG. 1 that are characteristic of the present invention will be described with reference to FIG. In FIG. 2, the components corresponding to those in FIG. The CPU 10 includes a first operation determination unit 31, a second operation determination unit 32, a first notification control unit 33, a first stop control unit 34, a second stop control unit 35, and a second notification control unit 36 as functional blocks. Contains. The pedometer 15 and the acceleration sensor 16 function as a sensor 21 that detects the movement of the mobile phone 1. The output device 12 functions as a notification unit 22 that notifies a user of predetermined matters.

  The first operation determination unit 31 determines that the mobile phone 1 has operated when the movement of the mobile phone 1 exceeds a predetermined first operation amount. For example, the first motion determination unit 31 determines that the user is walking when the mobile phone 1 detects a movement corresponding to the user walking.

  When the first motion determination unit 31 determines that the movement of the mobile phone 1 does not exceed a predetermined first motion amount, the second motion determination unit 32 determines that the movement of the mobile phone 1 is greater than the first motion amount. It is determined whether the second operation amount is too small. When the movement of the mobile phone 1 does not exceed the second operation amount, the second operation determination unit 32 determines that the mobile phone 1 is not operating. For example, the second motion determination unit 32 does not determine that walking is stopped only when the movement of the mobile phone 1 is equal to or less than the first motion amount, but is equal to or less than the second motion amount that is smaller than the first motion amount. It is determined that walking is stopped. At this time, the second operation determination unit 32 can determine that the mobile phone 1 is not operating when the value representing the dispersion of the output of the sensor 21 that has detected the movement of the mobile phone 1 is within a threshold value.

  Furthermore, the second operation determining unit 32 operates the mobile phone 1 when the movement of the mobile phone 1 is less than the first operation amount and exceeds the second operation amount for a predetermined period or longer. Can be determined.

  When the first operation determining unit 31 determines that the mobile phone 1 is operated, or when the second operation determining unit 32 determines that the own device is not operating, the first notification control unit 33 Matters previously notified to the user from the notification unit 22 are again notified to the user. For example, when the first notification control unit 33 detects that the user is walking, the first notification control unit 33 notifies the user of the matter that has been notified that the user is not walking, or walks again. When it is detected that the user has not been detected, the user is notified again of matters that were notified to the user during walking.

  When it is determined by the first operation determination unit 31 that the mobile phone 1 is operated, or when the second operation determination unit 32 determines that the mobile phone 1 is not operating, the first stop control unit 34 The detection process by the sensor 21 that detects the movement of the mobile phone 1 is stopped. For example, the first stop control unit 34 is, for example, an acceleration sensor when the first motion determining unit 31 detects that the user is walking or when the second motion determining unit 32 detects that the user is walking stopped. 16 operation is stopped.

  When the second operation determination unit 32 determines that the mobile phone 1 has operated, the second notification control unit 36 notifies the user again of matters that have been previously notified to the user from the notification unit 22 Let For example, the second notification control unit 36 notifies the user of the matter that was previously notified to the user when it is detected that the possibility of walking is high.

  The second stop control unit 35 stops the detection process by the sensor 21 that detects the movement of the mobile phone 1 when the second operation determination unit 32 determines that the mobile phone 1 has operated. For example, the second stop control unit 35 stops the operation of the acceleration sensor 16, for example, when it is detected that the possibility of walking is high.

Next, an operation example of the mobile phone 1 described with reference to FIGS. 1 and 2 will be described with reference to FIG. The cellular phone 1 repeats the processing of the flowchart shown in FIG. 3 at regular time intervals and periodically and continuously executes the processing. The repetition interval can be set to 1 second, for example. That is, when the process of the flowchart shown in FIG. 3 starts from the start and ends at the end, the process is started again from the start after one second has elapsed.
(Step S101)
When the process starts, first operation determination unit 31 in CPU 10 (hereinafter, the description of “in CPU 10” is omitted) first obtains a step value from pedometer 15. The step value is information indicating the movement of the mobile phone 1 and may be a detection value from a sensor that detects the movement. In addition, the 1st operation | movement determination part 31 is the value which added 1 to the last step value, when the movement of the mobile telephone 1 exceeds the 1st movement amount based on the detection value of the sensor output from the pedometer 15 May be acquired as the current step count value.

(Step S102)
Next, the first motion determination unit 31 compares the step value acquired in step S101 this time with the step value saved in step S103 last time, and the current step value and the step value saved last time are Determine whether they are different. That is, the first operation determination unit 31 determines whether or not the movement of the mobile phone 1 exceeds a predetermined first operation amount.

(Step S103)
When it is determined in step S102 that the current step value is different from the previous step value (in the case of “Yes” in step S102), the first motion determination unit 31 is a first mobile phone 1 whose movement is determined in advance. Since the operation amount is exceeded, it is determined that the mobile phone 1 has operated. That is, the first movement determination unit 31 determines that the walking state of the user carrying the mobile phone 1 is walking, and uses the step count value acquired in step S101 this time in a predetermined storage area of the storage device 18. Save to. This stored step value becomes the previous step value used in the determination of step S102 next time.

(Step S104)
Next, the first motion determination unit 31 determines whether or not it is determined that the step value is not different in the determination before determining that the step value is different in step S102 this time. That is, if it is determined “No” in step S102 one time before the determination of “Yes” in step S102 this time, the first operation determination unit 31 determines “Yes” in step S104. In other words, when the first movement determination unit 31 determines that the movement of the mobile phone 1 exceeds the predetermined first movement amount and increments the step count by one, the first movement determination unit 31 carries the portable telephone in the previous determination in step S102. If it is determined that the movement of the telephone 1 does not exceed the predetermined first movement amount, “Yes” is determined in step S104. That is, the first motion determination unit 31 refers to the previous step count value to determine whether or not it is determined that the user is continuously walking. “Yes”.
On the other hand, if it is determined that the step value is different in step S102 before this step S102 determines that the step value is different (one time before), the first action determination unit 31 sets “No” in step S104. judge. In other words, when the first movement determination unit 31 determines that the movement of the mobile phone 1 exceeds the predetermined first movement amount and increments the step count by one, the first movement determination unit 31 carries the portable telephone in the previous determination in step S102. If it is determined that the movement of the telephone 1 has exceeded a predetermined first movement amount and the step count value has been incremented by one, “No” is determined in step S104. That is, the first motion determination unit 31 refers to the previous step count value to determine whether or not it is determined that the user is continuously walking. If the first motion determination unit 31 determines that the user is continuously walking, “No” is determined in step S104. Is determined.

  Here, when the 1st operation | movement determination part 31 determines with "Yes" by step S104, the following state is meant. In other words, this is different from the state in which the step value of the pedometer 15 is not different between the current time and the previous time in Step S102 immediately before it is determined that the step value is different in Step S102 this time (“No” in Step S102). ) In a process after step S107, which will be described later, it is detected that the user carrying the mobile phone 1 is in a stopped state of walking or has a possibility of stopping walking. In this case, the detection process by the acceleration sensor 16 may be continuing in order to determine whether or not the mobile phone 1 is operating by the second operation determination unit 32. In addition, there is a high possibility that the mobile phone 1 is left on a desk or the like for a long time. Further, there is a high possibility that the user carrying the mobile phone 1 is seated for a long time.

(Step S105)
When the first motion determination unit 31 determines that the step value is not different in the determination before determining that the step value is different in step S102 (in the case of “Yes” in step S104), the second motion determination unit 32 If the output value of the acceleration sensor 16 is being acquired (that is, when the acceleration sensor 16 is in the activated state), the first stop control unit 34 stops acquiring the output value. That is, the first stop control unit 34 turns off the acceleration sensor 16 (stopped state) and stops acquiring the output value from the acceleration sensor 16.

(Step S106)
Next, the first notification control unit 33 considers that the walking of the user carrying the mobile phone 1 has been detected as being in a stopped state or has been detected as having been possibly stopped. Then, a predetermined process is performed when walking is started from the walking stop state. For example, the first notification control unit 33 was notified to the user from the output device 12 when the walking stop state or the possibility thereof was detected before detecting that the user is walking in step S103. Control is performed to notify the user of the matter from the output device 12 again. For example, when the mobile phone 1 is placed on a desk or the like (that is, the number of steps detected by the pedometer 15 is not changed, the second motion determination unit 32 determines that the walking is stopped) In the case of receiving a voice call or the like, after the next start of walking, the notification made when the stop was performed is executed again.

(Step S107)
On the other hand, in step S102, the first motion determination unit 31 determines that the current step value is the same as the previous step value, that is, the first motion determination that the movement of the mobile phone 1 does not exceed a predetermined first motion amount. When determined by the unit 31 (in the case of “No” in step S102), the CPU 10 turns on the acceleration sensor 16 (activated state). For example, the second motion determination unit 32 repeatedly acquires the output value of the acceleration sensor 16 at a predetermined period for a predetermined time T1 (for example, T1 = 1 second).
(Step S108)
Next, the second motion determination unit 32 cancels the gravitational acceleration using a known general method from the plurality of output values acquired from the acceleration sensor 16 in step S107, and then acquires the plurality of acquired values from the acceleration sensor 16. Calculate the variance of output values.

(Step S109)
Then, the second operation determination unit 32 determines whether or not the variance value calculated in step S108 is within a predetermined threshold. That is, the second motion determination unit 32 determines whether or not the movement of the mobile phone 1 exceeds a second motion amount that is smaller than the first motion amount.
(Step S110)
If the variance value is within a predetermined threshold, it is determined that the mobile phone 1 is not operating because the movement of the mobile phone 1 does not exceed the second operation amount. That is, the second motion determination unit 32 determines that the walking state of the user who is carrying the mobile phone 1 is stopped.
(Step S111)
When the second operation determination unit 32 determines that the mobile phone 1 is not operating (in the case of “Yes” in step S109), the first stop control unit 34 turns off the acceleration sensor 16, and Stop acquiring the output value. That is, the first stop control unit 34 controls the acceleration sensor 16 to the stop state.
(Step S112)
Then, the first notification control unit 33 performs a predetermined process based on the determination result by the second operation determination unit 32. For example, the first notification control unit 33 performs control for causing the output device 12 to notify the user again of matters that have been notified to the user from the output device 12.

In addition, the process which the 1st notification control part 33 performs by step S112 is a process performed when it detects that the walk state of the user who is carrying the mobile telephone 1 is stopping, and is as follows. It can be a process. That is, for example, the first notification control unit 3 is configured to notify the user of matters that have been notified to the user from the output device 12 when the walking state is walking before it is detected that the walking has stopped. Can be notified again.
In a mobile terminal such as the mobile phone 1, for example, when there is a notification to a user of an incoming voice call or e-mail, a notification to the user by a schedule function, or the like, the user may not notice. This is particularly likely to occur when the user is ringing while walking in a mode that uses only vibration notification. In such a case, when the stop of the user's walking is detected, the user can be notified again that the user has an opportunity to recognize that there is an incoming voice call or the like. This is because vibration is more noticeable when the vehicle is stopped than when walking.
Note that the re-notification may be set only when the user does not perform a predetermined operation on the input device 11 in response to the previous notification. In addition, when the process of step S111 is repeatedly performed, the number of notifications again after detection of the stop state is limited to only one, or when performed a plurality of times, it is set to be repeated after a predetermined time. be able to. In addition, when the notification is made again, the notification can be limited to the notification by vibration, or the notification time and the volume can be changed when the notification by the acoustic signal is performed.

(Step S113)
On the other hand, when it is determined in step S109 that the variance value is not within the predetermined threshold value, that is, the variance value is larger than the predetermined threshold value (in the case of “No” in step S109), the second operation determination unit 32 determines whether the variance value is in step S107. It is determined whether or not the acquisition of the output value of the acceleration sensor 16 has continued for a certain time T2 (for example, T2 = 10 seconds). In other words, the second motion determination unit 32 determines whether or not the state of “No” in step S102 and “No” in step S109 has elapsed for a certain time T2. That is, the second motion determination unit 32 determines whether or not the state where the movement of the mobile phone 1 is less than the first motion amount and exceeds the second motion amount continues for a predetermined period T2 or more. To do. Note that the second motion determination unit 32 does not determine whether or not the time T2 is continued, but the number of times of the determination process in step S113 by the second motion determination unit 32 is repeated a predetermined number of times (for example, 10 times) continuously. It may be determined whether or not.

  On the other hand, when the second motion determination unit 32 determines in step S113 that acquisition of the output value of the acceleration sensor 16 in step S107 does not continue for a certain time T2 (in the case of “No” in step S113), The first motion determination unit 31 returns to the process of step S101 and acquires the detection result of the pedometer 15 again. Thereafter, the first operation determination unit 31 executes the processing after step S101 as described above.

(Step S114)
On the other hand, if the second motion determination unit 32 determines in step S113 that the output value of the acceleration sensor 16 in step S107 has been acquired for a certain time T2 (“Yes” in step S113), The two-operation determining unit 32 determines that the walking state of the user who is carrying the mobile phone 1 is walking. That is, the second motion determination unit 32 operates when the state where the movement of the mobile phone 1 is less than the first motion amount and exceeds the second motion amount continues for a predetermined period or longer. Is determined.
(Step S115)
And when the 2nd operation | movement determination part 32 determines that the mobile telephone 1 operate | moved, based on the determination result of the 2nd operation | movement determination part 32, the 2nd stop control part 35 turns off the acceleration sensor 16, and outputs Stop getting the value. That is, the second stop control unit 35 stops the acceleration sensor 16.
In the present embodiment, the second motion determination unit 32 determines that the variance value of the plurality of output values of the acceleration sensor 16 is a predetermined value even when the step value of the pedometer 15 has not changed (“No” in step S102). When the state exceeding the threshold (the state of “No” in step S109) continues for a predetermined time T2 or more, it is determined that there is a certain possibility that the user is walking. Therefore, when the second motion determination unit 32 determines that the second motion determination unit 32 is walking, the second stop control unit 35 stops the acceleration sensor 16.

(Step S116)
Then, the second notification control unit 36 performs a predetermined process in consideration of the possibility that the walking state of the user carrying the mobile phone 1 is stopped. Here, although the user who is carrying the mobile phone 1 is likely to be walking, there is a possibility that the user is stopped. Therefore, the second notification control unit 36 performs notification processing to the user, for example, by performing notification processing to the user in the same manner as in step S112 or by limiting a part of the notification content notified in step S112. Processing can be performed.

  The outline of the processing based on the flowchart shown in FIG. 3 is as follows. First, the CPU 10 periodically executes the processing of the flowchart shown in FIG. 3 at regular time intervals by executing a predetermined program. The interval from the end of execution to the restart is, for example, 1 second.

  The first motion determination unit 31 refers to the value of the pedometer 15 and the previous value, and confirms whether or not there is a change, thereby roughly determining whether or not the user is in a walking stop state (step S102). ). If the first motion determination unit 31 determines that the user is walking, the process is basically terminated (“Yes” in step S102 to “No” in steps S103 and S104).

  On the other hand, when it is determined by the first motion determination unit 31 that there is no change in the step value of the pedometer 15, the second motion determination unit 32 determines that there is a possibility that walking has stopped, for a certain time T1 Acquisition of a plurality of values of the acceleration sensor 16 is started (step S107). In step S107, for example, a value for T1 = 1 second is acquired. The second motion determination unit 32 obtains a general dispersion value from the acquired value after canceling the gravitational acceleration using a general method (step S108).

  When the obtained variance value is within a predetermined threshold (when “Yes” in step S109), the second motion determination unit 32 determines that the user is in a walking stop state. When the second motion determination unit 32 determines that walking has stopped, the first stop control unit 34 stops acquiring the value of the acceleration sensor 16 (step S110), and the first notification control unit 33 The user is notified via the output device 12 (step S111). In step S111, for example, a vibration mechanism of the output device 12 is used to notify the user by vibrating the mobile phone 1.

  On the other hand, if the variance value is greater than or equal to the threshold value in the determination in step S109, the second motion determination unit 32 determines that the user is walking and continuously acquires the value of the acceleration sensor 16 for a certain time T1 ( For example, it is acquired for one second), and a dispersion value is obtained, and comparison with a threshold value is repeated (“No” in steps S107, S108, and S109, and “No” in S113).

  When it is determined that the robot is walking for a certain time T2 (for example, 10 seconds) (or a certain number of times) (that is, when the variance value is equal to or greater than the threshold in the determination in step S109), the second motion determination unit 32 It is determined that it is inside. However, in consideration of the possibility of stopping, the second notification control unit 36 passes the output device 12 to the user after the second stop control unit 35 stops acquiring the value of the acceleration sensor 16. Is notified (steps S113, S114, and S115).

  In addition, when the count of the pedometer 15 changes while acquiring the value of the acceleration sensor 16, the first motion determination unit 31 determines that the user is walking and the first stop control unit 34 determines the value of the acceleration sensor 16. Acquisition is stopped (steps S102 to S105).

  As described above, when the step value of the pedometer 15 unit does not change, the mobile phone 1 according to the present embodiment depends on the magnitude of the detection signal output from the acceleration sensor 16 instead of the elapsed time since the change has stopped. To detect a walking stop state. According to this configuration, when the detection time is set to a constant value, it is possible to change the value of the magnitude of the detection signal serving as a determination criterion when detecting a walking stop state. That is, the setting for detecting the walking stop state can be performed more finely, and the delay of the detection time can be reduced more easily. Thus, in this embodiment, the walking state and the walking stop can be accurately detected by detecting the walking stop state by combining the pedometer 15 and the acceleration sensor 16. According to this, it avoids the case where it is erroneously detected that the walking is stopped in various scenes such as U-turn and stair climbing, and prevents the occurrence of a margin until the step count starts after the erroneous detection, It is possible to detect the walking state quickly and accurately.

  In addition, the mobile phone 1 according to the present embodiment periodically observes the step count (that is, the step count) of the pedometer 15, and if the count does not change, it is considered that the mobile phone 1 may have shifted from walking to a stop state. Observation by the sensor 16 is started. And it notifies to a user according to the result calculated from the value acquired with the acceleration sensor 16 for a fixed time. Alternatively, the acquisition of a value is stopped by the acceleration sensor 16 and the observation returns to the pedometer 15. According to this, an increase in power consumption can be suppressed by reducing the use of the acceleration sensor 16. That is, in the present embodiment, the trigger for starting to use the acceleration sensor 16 is based on the counting stop state of the pedometer 15. Therefore, although the pedometer 15 and the acceleration sensor 16 are used in combination, the power consumption can be suppressed as compared with the case where the acceleration sensor 16 is used to detect the stop of walking at all times, and the small sized terminal such as a mobile phone can be used. It can be said that it is suitable.

It should be noted that the state transition of the walking state detection operation in the mobile phone 1 of the present embodiment can be shown as in FIG. FIG. 4 is a state transition diagram for explaining the transition of the operation state of the mobile phone 1 shown in FIG.
In FIG. 4, the pedometer mode is an operation state in which the pedometer 15 counts the number of steps and the output value of the acceleration sensor 16 is not acquired. That is, it is a state in which the first motion determination unit 31 determines whether or not the movement of the mobile phone 1 exceeds a predetermined first motion amount. In this case, since the second motion determination unit 32 does not execute the determination process, the pedometer 15 outputs the detection result by the sensor, but the acceleration sensor 16 does not output the detection result by the sensor.
On the other hand, in the acceleration sensor distributed mode, the pedometer 15 counts the number of steps, acquires a plurality of output values of the acceleration sensor 16, and compares the distribution with a predetermined threshold value to detect a walking stop state. It is an operating state. That is, the first motion determination unit 31 determines whether the movement of the mobile phone 1 exceeds a predetermined first motion amount, and the second motion determination unit 32 determines the motion of the mobile phone 1 in advance. In this state, it is determined whether or not the second operation amount is exceeded. In this case, the pedometer 15 outputs the detection result by the sensor, and the acceleration sensor 16 also outputs the detection result by the sensor.

As shown in FIG. 4, when the step value of the pedometer 15 is not different from the previous value in the pedometer mode, that is, the first movement amount in which the movement of the mobile phone 1 is predetermined by the first movement determination unit 31. If it is determined that it does not exceed, the control mode of the mobile phone 1 transitions to the acceleration sensor distributed mode. On the other hand, in the acceleration sensor distributed mode, when any of the following conditions (1) to (3) is satisfied, the mode changes to the pedometer mode. The conditions are as follows.
Condition (1)
When the variance value calculated from the output value of the acceleration sensor 16 is within a predetermined threshold, that is, when the second operation determination unit 32 determines that the mobile phone 1 is not operating.
Condition (2)
When the variance calculated from the output value of the acceleration sensor 16 is equal to or greater than a predetermined threshold value for a certain period of time, that is, when the mobile phone 1 is determined to be operating by the second motion determination unit 32.
Condition (3)
When the step value of the pedometer 15 is different from the previous value, that is, when the first operation determination unit 31 determines that the mobile phone 1 is operating.

  In addition, embodiment of this invention is not limited to said form, For example, the following deformation | transformation is possible. For example, when notifying the user from the output device 12, the vibration intensity, time, and pattern can be changed according to the value of the acceleration sensor 16. According to this, it is possible to expect an effect that the user can easily notice the notification.

  Moreover, you may make it change the method of notification from the output device 12 according to the continuation time of the walk state (namely, state in which it is walking) before detecting a walk stop state. For example, when it is detected that the user has been walking for a long time, it is determined that the user has not noticed the notification for a long time, and when the user stops, the vibration intensity, time, and ringing pattern are changed. On the other hand, it can be made easier to notice.

  Further, the notification target is not limited to the voice call, the e-mail call, and the notification by the schedule function, but can be used for all the functions related to the notification that the mobile phone 1 has.

  Further, the notification method can be a notification by vibration, a sound signal or a notification by sound, and the type of sound, volume, etc. can be changed. As a result, application examples such as making it easier for the user to notice or changing according to the noise of surrounding sounds are also conceivable.

  Moreover, although the acceleration sensor 16 is used in the above, it can be replaced with another sensor (for example, an inclination sensor or an angular velocity sensor) or can be combined.

  In addition, for a plurality of values acquired from the acceleration sensor 16, instead of comparing the variance of the plurality of values with a predetermined threshold, the following values are compared with a predetermined threshold, The stop state may be determined by combining the comparison results. That is, a value representing dispersion of a plurality of values other than variance (eg, standard deviation, average deviation, difference between maximum value and minimum value, etc.) is compared with a predetermined threshold value, or an average value of a plurality of values and a predetermined value You may make it determine a stop state by comparing with a threshold value, or comparing the maximum value of several values with a predetermined threshold value.

  Further, the embodiment of the present invention is not limited to the mobile phone as described above, and can be applied to a mobile terminal device in general. Alternatively, it can be applied to a wristwatch having a sensor. In addition, the embodiment of the present invention can include a CPU and a program executed by the CPU as components, and the program in that case is distributed via a computer-readable recording medium or a communication line. Can do.

  The basic configuration of the embodiment of the present invention can be represented by the block diagram shown in FIG. That is, the state detection device 100 as a basic embodiment of the present invention can be configured by the first motion determination unit 101 and the second motion determination unit 102. In this case, the 1st operation | movement determination part 101 determines with the state detection apparatus 100 having operate | moved, when the motion of an own apparatus exceeds the predetermined 1st operation amount. Then, when the movement of the state detection device 100 does not exceed the first movement amount determined in advance by the first movement determination unit 101, the second movement determination unit 102 moves the movement of the state detection device 100 from the first movement amount. If the movement of the state detection device 100 does not exceed the second movement amount, it is determined that the state detection device 100 is not operating.

  The configuration shown in FIG. 5 and the configuration shown in FIG. 2 have the following correspondence relationship. The state detection apparatus 100 shown in FIG. 5 corresponds to the mobile phone 1 shown in FIG. The first operation determination unit 101 illustrated in FIG. 5 corresponds to the first operation determination unit 31 illustrated in FIG. 5 corresponds to the second operation determination unit 32 illustrated in FIG. 2. The second operation determination unit 102 illustrated in FIG.

  FIG. 6 shows the following using a mobile phone (only a pedometer) to be compared with the present invention and the mobile phone 1 (with an acceleration sensor) according to the embodiment of the present invention shown in FIG. The measurement results when the walking state detection operation is verified by experiment under such conditions are shown.

The measurement was performed according to the following procedure.
(1) The subject walks wearing the test terminal as usual (trousers pocket, coat pocket, bag, etc.).
(2) Have the subject walk and stop as usual. However, I had U-turns interwoven on the way.
(3) When stopping, the intention was displayed at the timing when the subject thought he stopped.

  As can be seen from FIG. 6, when stopping, it was possible to detect the walking stop state with only a pedometer, but it was found that a false detection was made when the U-turn was made (the stop detection rate is Both were 100%, but the false detection rate during the U-turn was 42.9% (pedometer only) and 0% (with accelerometer).

  In addition, with the pedometer alone, the stop state was sometimes detected before the subject indicated the intention to stop (there was a case that was up to 2 seconds earlier) (stop from the subject's stop) The average time to judgment was -0.02 seconds).

  On the other hand, in the case of the embodiment of the present invention in which the acceleration sensor is used together (this time, the variance is obtained from the value for T1 = 1 second), the subject enters the stop state after about 1 second from the intention to stop. It was detected, and the state where the subject was stopped was correctly detected (the average time from the subject's stop to the stop determination was +1.22 seconds).

  From these results, it was found that it was difficult to obtain accurate results with only the pedometer, and it was found that the timing was shifted from the timing when the user thought he stopped walking.

1 Mobile phone 10 CPU
11 Input device 12 Output device 15 Pedometer 16 Accelerometer 17 Communication device 18 Storage device 31 First motion determination unit 32 Second motion determination unit 33 First notification control unit 34 First stop control unit 35 Second stop control unit 36 2 Notification control unit

Claims (9)

A first action determination unit that determines that the own apparatus has operated when the movement of the own apparatus exceeds a predetermined first movement amount;
When it is determined by the first operation determination unit that the movement of the own device does not exceed a predetermined first operation amount, the second operation amount is smaller than the first operation amount. A second motion determination unit that determines whether or not the device itself is not operating when the motion of the device does not exceed the second motion amount;
A state detection device comprising:   When it is determined by the first operation determination unit that the device is operating, or when the second operation determination unit determines that the device is not operating, the notification unit notifies the user before that. The state detection apparatus according to claim 1, further comprising a first notification control unit configured to notify the user of a matter that has been notified to the user again.   When the first operation determining unit determines that the own device is operating, or when the second operation determining unit determines that the own device is not operating, the movement of the own device is detected. The state detection device according to claim 1, further comprising a first stop control unit that stops detection processing by the sensor. The second operation determination unit
4. The apparatus according to claim 1, wherein when the value representing the dispersion of the output of the sensor that detects the movement of the own apparatus is within a threshold value, it is determined that the own apparatus is not operating. 5. The state detection device described in 1. The second operation determination unit
5. The apparatus according to claim 4, wherein if the state where the movement of the own apparatus is less than the first operation amount and exceeds the second operation amount continues for a predetermined period or longer, it is determined that the own apparatus has operated. State detection device.   A second notification control unit configured to notify the user again of matters previously notified to the user from the notification unit when the second operation determination unit determines that the device has operated; The state detection device according to claim 4 or 5, wherein   5. The apparatus according to claim 4, further comprising: a second stop control unit that stops detection processing by a sensor that detects the movement of the own device when the second operation determination unit determines that the own device has operated. The state detection device according to any one of 6 to 6. The state detection device
A first action determination step for determining that the own apparatus has operated when the movement of the own apparatus exceeds a predetermined first movement amount;
When it is determined in the first operation determining step that the movement of the own device does not exceed a predetermined first operation amount, the second operation amount is smaller than the first operation amount. A second operation determining step for determining whether or not the device itself is not operating when the motion of the device does not exceed the second operation amount;
A state detection method comprising: Computer
A first action determining means for determining that the own apparatus has operated when the movement of the own apparatus exceeds a predetermined first movement amount;
If it is determined by the first motion determining means that the movement of the device does not exceed a predetermined first motion amount, the second motion amount is smaller than the first motion amount. A second operation determining means for determining whether or not the own device is not operating when the movement of the own device does not exceed the second operation amount;
Program to function as.

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