JP5239705B2 - Wireless communication device - Google Patents

Description

The present invention relates to a technique for suppressing the occurrence of radio wave interference in a wireless communication device.

  Conventionally, an electronic device that handles radio waves and high-frequency electric signals can be a source of radio interference, and therefore countermeasure techniques have been proposed. Note that the radio wave interference is a failure in receiving radio waves or malfunction of an electronic device due to radio waves.

  Patent Document 1 includes a reception unit that receives a data block, a control unit connected to the reception unit, and a transmission unit connected to the control unit in a wireless communication network, and the data block includes a validity period field. The control unit describes a wireless station that selects a channel scanning method based on the validity period field.

  Patent Document 2 discloses a mobile communication terminal device in a hybrid wireless communication system that integrates a cellular wireless system that performs communication using a cellular wireless signal and a wireless LAN system that performs communication using a wireless LAN signal, and receives the cellular wireless signal. A cellular radio signal receiving means for generating a cellular received signal, and a cellular radio area determining means for determining whether or not the mobile phone is within a predetermined cellular radio communication area from information on the cellular received signal from the cellular radio signal receiving means, A wireless LAN signal receiving unit that receives a wireless LAN signal and generates a LAN received signal, a power supply control unit that controls supply of power to the wireless LAN signal receiving unit, and a LAN received signal from the wireless LAN signal receiving unit Determines whether it is within the communication area of a predetermined wireless LAN system from the information Wireless LAN area determining means, wherein the power supply control means has means for executing power supply to the wireless LAN signal receiving means at a specific cycle, and the wireless LAN area determining means is a wireless LAN signal receiving means. A wireless communication system that determines whether or not the wireless LAN system is within the communication area only when power is supplied from the power supply control means is described.

  In Patent Document 3, a GPS receiving module that receives position information of a connection device from a GPS (Global Positioning System) satellite, a wireless LAN module for connecting to a wireless LAN-AP, and position information of the wireless LAN-AP are described. A storage device for storing, and a control unit that selectively operates the wireless LAN module based on the location information of the communication device output from the GPS reception module and the stored location information of the wireless LAN-AP A communication device is described. According to this, the process of receiving the data service is executed only when the communication device exists in the service area of the wireless LAN-AP, and when the communication device is not in the service area of the wireless LAN-AP, The wireless LAN-AP is continuously searched. For this reason, the wireless LAN module operates only when necessary, so that power consumption is minimized.

Patent Document 4 discloses a wireless terminal device that operates to select a scanning method according to the state of a wireless terminal device when searching for a wireless base station in a wireless terminal device having both active scan and passive scan functions. Have been described. According to this, by selecting an active scan, it is possible to shorten the search time when it is necessary to search quickly, and to reduce the power consumption in the terminal device required for the base station search, It is said that. In addition, when there is no need to search immediately, it is said that by selecting passive scan, consumption of radio resources can be suppressed for base station search.
JP 2004-229278 JP 2004-349863 A Special Table 2006-508603 JP 2005-12539 JP

  In the conventional technology, the GPS or the like is used at a predetermined time interval in order to determine whether or not the emission of the radio wave is present in a specific area where the emission is not preferable based on the position information acquired using the GPS or the like. It is necessary to execute processing for acquiring position information. Usually, a large amount of power consumption is required to execute the position information acquisition process using GPS or the like.

  Furthermore, in the prior art, when it detects that it is out of the communication range, it searches for the base station using the passive scan method.For example, when it exists near the boundary between the communication range and the outside of the range, the passive scan method is used. The used base station is frequently searched, resulting in wasted power consumption.

  The present invention has been made in view of such circumstances, and one of its purposes is to provide a wireless communication apparatus that suppresses the emission of radio waves while ensuring the convenience of the user.

  The wireless communication device disclosed in the present application includes a sensor unit that detects vibration, a movement amount detection unit that detects a movement amount based on an output of the sensor unit, and a total movement amount obtained by cumulatively adding the detected movement amounts. A total movement amount storage unit that stores the total movement amount, a total movement amount determination unit that determines whether or not the total movement amount exceeds a predetermined threshold value, and a wireless communication device that determines that the total movement amount exceeds a predetermined threshold value And a wireless communication control unit that changes the operation state to a state in which radio waves are not transmitted.

  The present invention detects whether or not the mobile device is in a moving state based on an output from a sensor unit included in the wireless communication device, and adjusts an execution timing of processing for suppressing emission of radio waves based on the detected state. It is possible to achieve an excellent effect that radio wave emission can be suppressed while ensuring convenience.

  Embodiments of the present invention will be described below with reference to the drawings.

[1. System configuration
FIG. 1 is a diagram illustrating an outline of a wireless communication system according to the present embodiment.

  The wireless communication system illustrated in FIG. 1 includes a wireless communication device 100 and a wireless communication base station 200.

  The radio communication base station 200 has a radio communication area 300 indicated by a broken line, and can perform radio communication with the radio communication apparatus 100 existing inside the radio communication area 300.

  Furthermore, the radio communication base station 200 is connected to a communication line (not shown), and transfers data received from the radio communication device 100 to a higher-level device or the like via a communication line (not shown) or via a communication line (not shown). Data received from the host device can be transferred to the wireless communication device 100.

  When the radio communication device 100 exists inside the radio communication area 300, the radio communication device 100 can communicate with another device (not shown) via the radio base station 200.

  When the wireless communication apparatus 100 exists outside the wireless communication area 300, the wireless communication apparatus 100 is in a so-called out-of-communication state where wireless communication with the wireless base station 200 cannot be performed.

  The radio communication device 100 detects the reception intensity of the radio wave transmitted from the radio base station 200, and can determine that the radio communication device 100 is out of the communication range when the detected value becomes a predetermined level or less.

  When determining that the wireless communication apparatus 100 is out of the communication area, the wireless communication apparatus 100 performs a search process for the wireless base station in order to detect that the wireless communication apparatus 100 is within the communication area of the wireless base station 200.

  The radio communication apparatus 100 can selectively use, for example, an active method and a passive method as a search process for a radio base station.

  For example, when the user 400 carrying the wireless communication device 100 according to the present embodiment moves to the station 600 through the route 500, the wireless communication device 100 moves to the outside of the wireless communication area 300.

  In this case, the wireless communication device 100 uses the active method or the passive method to detect whether or not the wireless communication device 100 exists in the wireless communication area 300 until reaching the station 600 through the route 500. A search process for the station 200 is performed. This is a process that is performed to automatically resume wireless communication when the wireless communication device 100 is located inside the wireless communication area 300. The above-described process is an important process for ensuring the convenience of the user of the communication device 100.

  However, for example, when the user 400 gets on the train after reaching the station 600, it is desirable to stop the wireless communication processing of the wireless communication device 100. This is because radio waves output from the wireless communication device 100 in wireless communication processing may affect the operation of other electronic devices.

  For example, since a cardiac pacemaker may malfunction due to radio waves output from a radio communication device such as a mobile phone or PHS, the radio communication device may not output radio waves in public transportation or hospitals. Is required by users.

The radio communication apparatus 100 according to the present embodiment can switch the operation state of the radio communication apparatus 100 at an appropriate timing while considering the convenience of the user 400.
[2. (Configuration of wireless communication terminal)
FIG. 2 is a diagram illustrating a hardware configuration of the wireless communication device 100 according to the present embodiment.

  2 includes a control unit 101, a main storage unit 102, an auxiliary storage unit 103, a timer unit 104, a sensor unit 105, a display unit 106, an operation unit 107, and an audio processing unit. 108, an audio output unit 109, an audio input unit 110, a wireless communication unit 111, a first communication unit 112, and a second communication unit 113, and each unit communicates via a communication line 120. Connected as possible.

  The control unit 101 is connected to each hardware unit of the wireless communication device 100 via the communication line 120.For example, the control unit 101 stores the program recorded in the auxiliary storage unit 103 in the main storage unit 102, and stores the program in the main storage unit 102. A predetermined function is realized by performing arithmetic processing on the instruction code and data of the stored program. As the control unit 101, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), or the like can be used.

  For example, a RAM (Random Access Memory) and a ROM (Read Only Memory) can be used as the main storage unit 102.

  As the auxiliary storage unit 103, for example, an HDD (Hard Disk Drive), a flash memory (Flash Memory), or an SSD (Solid State Disk) can be used.

  The timer unit 104 has a function of measuring the passage of time using a clock signal or the like used for the operation of each unit included in the wireless communication device 100.

  The sensor unit 105 has a function of detecting movement of the wireless communication device, and for example, an acceleration sensor, a vibration sensor, or the like can be used.

  The display unit 106 has a function of displaying the result of the arithmetic processing of the control unit 101, and a liquid crystal display, an organic EL display, or the like can be used.

  The operation unit 107 has a function of accepting a user operation, and outputs a signal corresponding to the user operation to the control unit 101 via the communication line 120. As the operation unit 107, for example, an input button, a touch panel, or the like can be used.

  The voice processing unit 108 has a function of outputting voice via the voice output unit 109 and receiving voice input via the voice input unit 110. As the audio output unit 109, for example, a speaker, an audio output terminal, or the like can be used. As the voice input unit 110, for example, a microphone, a voice input terminal, or the like can be used.

  The wireless communication unit 111 includes a first communication unit 112 and a second communication unit 113 of different communication methods.

  As the first communication unit 112, for example, a communication unit having a function of performing wireless communication with a public line network using a wireless communication method such as WCDMA can be used.

  As the second communication unit 113, for example, a communication unit having a function of performing wireless communication with the wireless base station 200 as a wireless LAN access point using a wireless communication method such as 802.11b or 802.11g can be used. .

The control unit 101 outputs the audio signal received via the first communication unit 112 or the second communication unit 113 from the audio output unit 109. In addition, the control unit 101 transmits the audio signal acquired via the audio input unit 110 to the radio base station 200 from the first communication unit 112 or the second communication unit 113.
[3. (Configuration of wireless communication terminal program)
FIG. 3 is a diagram illustrating components of a program executed in the wireless communication apparatus according to the present embodiment. The components of the program shown in FIG. 3 are a detection control unit (PG101), a movement amount detection unit (PG102), a movement amount storage unit (PG103), a total movement amount determination unit (PG104), and a wireless communication control unit. (PG105).

  The detection control unit causes the control unit 101 to function as a component that controls the operation of the wireless communication apparatus according to whether or not the condition for executing the detection processing according to the present embodiment is satisfied.

  The movement amount detection unit causes the control unit 101 to function as a component that detects the movement amount of the wireless communication device based on the output of the sensor unit 105.

  The movement amount storage unit causes the control unit 101 to function as a component that accumulates the detected movement amount in the main storage unit 102, the auxiliary storage unit 103, or the like.

  The total movement amount determination unit obtains the total movement amount from the accumulated movement amount, and controls the control unit 101 as a component that controls the operation of the wireless communication apparatus according to whether or not the total movement amount satisfies a predetermined condition. To work.

The wireless communication control unit causes the control unit 101 to function as a component that controls the operation of the wireless communication unit 111.
[4. Process flow
FIG. 4 is a diagram illustrating a flow of detection processing in the wireless communication apparatus according to the present embodiment.

  First, the control unit 101 of the wireless communication device 100 initializes the total movement amount (S100). For example, the control unit 101 initializes the value of the total movement amount stored in the main storage unit 102 by setting it to 0 value.

  The control unit 101 determines whether or not the detection execution condition is satisfied (S101). For example, the control unit 101 can determine that the detection execution condition is satisfied when the reception intensity of the radio wave received from the radio base station 200 received by the radio communication unit 111 is equal to or lower than a predetermined threshold (S101). YES) On the other hand, for example, when the reception intensity of the radio wave received from the radio base station 200 received by the radio communication unit 111 exceeds a predetermined threshold, the control unit 101 can determine that the detection execution condition is not satisfied (S101). NO).

  In addition, in the above-described processing S101, the control unit 101 sets the detection execution condition when the control signal is received via the communication line 120 from the wireless communication unit 111 that has received the control signal instructing detection execution. It can be determined that it is satisfied (YES in S101). On the other hand, the control unit 101 can determine that the detection execution condition is not satisfied when the control signal instructing the detection execution is not received in the above-described process S101 (NO in S101).

  Further, when the control unit 101 receives a control signal instructing detection execution via the communication line 120 from the operation unit 107 that has received an operation instructing detection execution in the above-described process S101, the control unit 101 executes the detection execution. It can be determined that the condition is satisfied (YES in S101). On the other hand, the control unit 101 can determine that the detection execution condition is not satisfied when the control signal instructing the detection execution is not received in the above-described process S101 (NO in S101).

  When it is determined that the detection execution condition is satisfied (YES in S101), the control unit 101 detects the movement amount (S102). Details of the detection of the movement amount will be described later.

  The control unit 101 adds the detected movement amount to the total movement amount stored in the main storage unit 102, and updates the total movement amount stored in the main storage unit 102 (S103).

  The control unit 101 determines whether or not the updated total movement amount satisfies a predetermined condition (S104). For example, the control unit determines that the predetermined condition is satisfied when the updated total movement amount exceeds a predetermined threshold (YES in S104). On the other hand, for example, when the updated total movement amount is equal to or less than a predetermined threshold, the control unit 101 determines that the predetermined condition is not satisfied (NO in S104), and executes the above-described process S101. In this case, the control unit 101 may suspend the sensor unit 105. Thereby, power consumption by the sensor unit 105 can be reduced.

  When it is determined in S104 that the total movement amount satisfies the predetermined condition (YES in S104), the control unit 101 changes the operation state of the wireless communication unit 111 (S105).

  Here, in S104 described above, it is desirable to set the amount of movement required when the user 400 moves to the station 600 as a public institution that restricts the use of radio waves as the predetermined condition in S104 described above. This is because, when it is determined in S104 that the total movement amount satisfies the predetermined condition, the user 400 carrying the wireless communication device 100 moves along the route 500 as a public institution that restricts the use of radio waves. This is because it can be considered that it is the time of arriving at the station 600.

  In S105 described above, the control unit 101 can change, for example, the operation state of the wireless communication unit 111 to a state in which radio waves are not output. As a result, the operation state of the wireless communication device 100 can be automatically changed to a state in which no radio wave is output when it arrives at the station 600 as a public institution that restricts the use of radio waves.

Even when it is determined in S101 that the detection execution condition is satisfied, the detection execution condition is satisfied in S101 again before the total movement amount is determined to satisfy the predetermined condition in S104. If it is determined that there is not, the total movement amount is initialized in S100 described above. Thereby, for example, when the user 400 returns to the inside of the wireless communication area 300 on the way to the station 600 through the route 500, the above-described S105 is not executed, so the wireless communication Device 100 can perform radio communication with radio base station 200.
[5. (Detection method of movement amount)
[5-1. (Detection by moving distance)
When performing detection based on a movement distance as a movement amount detection method, for example, the wireless communication device 100 can use a pedometer as the sensor unit 105. The pedometer has an acceleration sensor and has a function of outputting a signal for measuring the number of steps based on an output value from the acceleration sensor.

  FIG. 8 is a diagram showing the flow of the step count detection process.

  First, the sensor unit 105 acquires the output of the acceleration sensor (S200), and determines whether or not the output value exceeds the upper limit value (S201).

  If the output value acquired from the acceleration sensor is larger than the predetermined upper limit value, the sensor unit 105 determines that the output value exceeds the predetermined upper limit value (YES in S201), and whether the walking flag is on. It is determined whether or not (S203). At the time when the process shown in FIG. 8 is started, the walking flag is in an OFF state.

  On the other hand, when the sensor unit 105 determines that the output value acquired from the acceleration sensor does not exceed the upper limit value (NO in S201), the sensor unit 105 determines whether the output value exceeds a predetermined lower limit value (S202). If the output value is smaller than the predetermined lower limit value, the sensor unit 105 determines that the output value exceeds the predetermined lower limit value (YES in S202), and executes the process of S203 described above. If the sensor unit 105 determines in step S202 that the output value does not exceed the predetermined lower limit value, the sensor unit 105 executes again from the above-described process S200.

  If the sensor unit 105 determines that the walking flag is in the ON state in the above-described process S203 (YES in S203), the sensor unit 105 outputs the number of steps (S204), changes the walking flag to the OFF state (S205), and The process is executed again from step S200.

  On the other hand, when the sensor unit 105 determines in the above-described process S203 that the walking flag is in the OFF state (NO in S203), the sensor unit 105 changes the walking flag to the ON state and executes again from the above-described process S200.

  The control unit 101 of the wireless communication apparatus 100 can acquire the number of steps detected by the sensor unit 105 by receiving the number of steps output from the sensor unit 105 in S204 described above via the communication line 120.

  The control unit 101 of the wireless communication device 100 can measure the number of steps of the user 400 carrying the wireless communication device 100 by counting the output of the pedometer used as the sensor unit 105.

  Furthermore, the control unit 101 can detect the moving distance of the user 400 carrying the radio communication device 100 by multiplying the measured number of steps by a preset distance per step.

  The above calculation process is expressed by the following equation. Here, x is a moving distance, h is the number of steps, and l is a distance per step.

  FIG. 5 is a schematic diagram showing the relationship between the output of the acceleration sensor and the output of the pedometer.

  FIG. 5A shows the acceleration sensor value on the vertical axis and the time on the horizontal axis. In the example shown in FIG. 5A, the output value of the acceleration sensor exceeds the upper limit 5A1 at time t1, the output value of the acceleration sensor exceeds the lower limit 5A2 at time t2, and the output value of the acceleration sensor exceeds the upper limit 5A1 at time t3. It shows that the output value of the acceleration sensor exceeds the lower limit 5A2 at time t4.

  FIG. 5 (B) synchronizes the period when the output of the acceleration sensor exceeds the upper limit 5A1 and the period when the output exceeds the lower limit 5A2 shown in FIG. 5 (A) with the time shown on the horizontal axis of FIG. 5 (A). FIG.

  FIG. 5C is a diagram showing an example in which the output of the pedometer is generated in synchronization with a period in which the output of the acceleration sensor exceeds the lower limit 5A2 shown in FIG. 5A. In the example shown in FIG. 5C, at the time t2, the time t4, the time t6, the time t8, the time t10, the time t12, the time t14, and the time t16, the output of the acceleration sensor has a lower limit 5A2 shown in FIG. The output of the pedometer is generated in synchronization with the exceeding.

In the above-described example, the processing flow illustrated in FIG. 8 is performed in the sensor unit 105, but may be performed in the control unit 105. In this case, the control unit 101 acquires the sensor output value as shown in FIG. 5A from the sensor unit 105 via the communication line 120. Further, in this case, in step S204 of the process flow shown in FIG. 8, the control unit 101 uses the technique such as inter-process communication to the component that executes the process S102 shown in the process flow of FIG. Is output.
[5-2. Detection by moving distance 2]
In the detection of the movement amount based on the movement distance described above, the distance per step can be changed according to the output value of the acceleration sensor included in the pedometer used as the sensor unit 105. For example, the detection accuracy of the moving distance can be improved by changing the distance per step in accordance with the magnitude of the output value of the acceleration sensor.

  FIG. 9 is a diagram showing a flow of detection processing of the number of steps and the output level.

  First, the sensor unit 105 initializes the output level by setting the output level variable R to 0 (S300), and acquires the output of the acceleration sensor (S301).

  The sensor unit 105 determines whether or not the output value exceeds the 0 value (S302). If it is determined that the output value exceeds the value (YES in S302), the loop variable i is initialized and the loop process S303 is started.

  First, the sensor unit 105 determines whether or not the output acquired in the above-described process S301 exceeds a predetermined upper limit value (i) (S304).

  FIG. 10 is a diagram showing an example of the content of the upper limit value (i). In the example shown in FIG. 10, the upper limit (1) is 50 when the loop variable i = 1. In the example shown in FIG. 10, the upper limit (2) is 100 when the loop variable i = 2.

  When the output value is larger than the predetermined upper limit value (i) in the above-described process S304, the sensor unit 105 determines that the output value exceeds the predetermined upper limit value (i) (YES in S304) and indicates the output level. The value of the loop variable is set in the variable R (S305).

  After executing the above-described processing S305, the sensor unit 105 determines whether or not the loop variable has reached the upper limit n of the number of loops (S306). Update by adding (S303), and execute from step S304.

  On the other hand, when it is determined in the above-described process S302 that the output value does not exceed the 0 value (NO in S302), the sensor unit 105 initializes the loop variable i and starts the loop process of process S307. Then, the sensor unit 105 determines whether or not the output value exceeds a predetermined lower limit value (i) (S308), similarly to the loop process of step S303, and when it is determined that the output value exceeds (YES in S308). Then, the value of the loop variable is set to the variable R indicating the output level (S309).

  FIG. 11 is a diagram showing an example of the content of the lower limit value (i). In the example shown in FIG. 11, when the loop variable i = 1, the lower limit (1) is −50. In the example shown in FIG. 11, when the loop variable i = 2, the lower limit (2) is −100.

  The sensor unit 105 determines whether or not the loop variable has reached the upper limit n of the number of loops (S310), similarly to the loop processing of S306 described above. It is updated by adding (S307), and the process is executed from step S308.

  The sensor unit 105 determines whether or not the variable R indicating the output level exceeds the zero value after the loop processing shown in S302 to S306 or the loop processing shown in S307 to S310 is completed (S311). ).

  When the variable R indicating the output level is greater than 0, that is, when the loop variable is set in the variable R indicating the output level in the above-described process S305 or S309, the sensor unit 105 sets the value indicating the output level to 0. It determines with exceeding a value (it is YES at S311), and it is determined whether a walk flag is an ON state (S312).

  If the sensor unit 105 determines in step S312 that the walking flag is in the ON state (YES in S312), the sensor unit 105 outputs the number of steps and the output level (S313), and after changing the walking flag to the OFF state (S314), The process from the above-described process S300 is executed again.

  If it is determined in step S311 that the variable R indicating the output level does not exceed 0 (NO in step S311), the sensor unit 105 initializes the variable R indicating the output level in step S300. If the value has not been changed from the above value, the process from the above-described process S300 is executed again. In this case, unlike the above-described process S313, the number of steps and the output level are not output.

  If it is determined in the above-described process S312 that the walking flag is not in the ON state (NO in S312), the walking flag is changed to the ON state (S315), and the processes from the above-described process S300 are executed again.

  The control unit 101 of the wireless communication apparatus 100 receives the step count and output level output from the sensor unit 105 in the above-described processing S313 via the communication line 120, thereby detecting the step count and output level detected by the sensor unit 105. Can be obtained.

  The control unit 101 of the wireless communication device 100 can measure the number of steps of the user 400 carrying the wireless communication device 100 by counting the output of the pedometer used as the sensor unit 105 for each output level.

  Further, the control unit 101 acquires a distance per step stored in advance in the main storage unit 102 from the main storage unit 102 corresponding to the output level of the output of the pedometer used as the sensor unit 105.

  FIG. 12 is a diagram showing a content example of the distance per step stored in association with the output level. In the example shown in FIG. 12, the distance per step (0.5 m) is stored for the output level (1). In the example shown in FIG. 12, the distance per step (1.0 m) is stored for the output level (2). This is an example in which the larger the output level value, the greater the vertical movement during walking, for example, so that the walking speed is estimated to be high, and the distance per step is set larger in proportion to the output level. is there.

  The control unit 101 multiplies the wireless communication device 100 by multiplying the number of steps counted for each output level for each predetermined unit time by the distance per step of the corresponding output level acquired from the main storage unit 102. The moving distance of the user 400 to be carried can be detected. The above calculation process is expressed by the following equation. Here, x is the moving distance, h (i) is the number of steps for each output level, and l (i) is the distance per step for each output level. Note that n means the number of output levels that can be output by the pedometer. That is, in the example shown in FIG. 6, since the number of output levels output from the pedometer is two, n = 2. In addition, although it was set as the example calculated for every predetermined time, whenever the output from a sensor part is acquired, you may add the distance per step according to an output level as a movement distance to a total movement distance.

  FIG. 6 is a schematic diagram showing the relationship between the output of the acceleration sensor and the output of the pedometer.

  In the example shown in FIG. 6A, there are an upper limit value 6A1 and an upper limit value 6A3, a lower limit value 6A2 and a lower limit value 6A4, the output value of the acceleration sensor exceeds the upper limit value 6A1 at time t1, and the acceleration sensor The output value exceeds the lower limit 6A2, the output value of the acceleration sensor exceeds the upper limit 6A3 at time t3, the output value of the acceleration sensor exceeds the lower limit 6A2 at time t4, and the output value of the acceleration sensor reaches the lower limit at time t4 ′. The value of the acceleration sensor exceeds the lower limit 6A4 at time t6 ′, the output of the acceleration sensor exceeds the lower limit 6A4 at time t8 ′, and the output of the acceleration sensor reaches the lower limit 6A4 at time t10 ′. The output value of the acceleration sensor exceeds the lower limit 6A4 at time t12 ′, the output value of the acceleration sensor exceeds the lower limit 6A2 at time t14, and the output value of the acceleration sensor reaches the lower limit at time t16. Shows a state in which more than a 6A2. For example, FIG. 6A shows a state in which a normal walking state is detected from time point t1 to time point t2, a state in which a walking state with a running foot is detected from time point t3 ′ to time point t12 ′, and time point t14. Shows a state where a normal walking state is detected at time t16.

  FIG. 6B is the same as FIG. 5B described above, and a description thereof is omitted.

  FIG. 6 (C) synchronizes the period when the output of the acceleration sensor exceeds the upper limit 6A3 and the period when it exceeds the lower limit 5A4 shown in FIG. 6 (A) at the time indicated on the horizontal axis of FIG. 6 (A). FIG.

  FIG. 6D is a diagram showing an example in which the output of the pedometer is generated in synchronization with a period in which the output of the acceleration sensor exceeds the lower limit 6A2 or the lower limit 6A4 shown in FIG. In the example shown in FIG. 6D, the first output value 6D2 is generated in synchronization with the output value of the acceleration sensor exceeding the lower limit 6A2 at each of the time point t2, the time point t14, and the time point t16, and the time point t4 ′. The second output value 6D1 is generated in synchronization with the output value of the acceleration sensor exceeding the lower limit 6A4 at time t6 ′, time t8 ′, time t10 ′, and time t12 ′. Yes.

In the above-described example, the processing flow illustrated in FIG. 9 is executed by the sensor unit 105, but may be executed by the control unit 105. In this case, the control unit 101 acquires the output value of the sensor as illustrated in FIG. 6A from the sensor unit 105 via the communication line 120. Furthermore, in this case, in step S313 of the process flow shown in FIG. 9, the control unit 101 uses a technique such as inter-process communication to the component that executes the process S102 shown in the process flow shown in FIG. And output the output level.
[5-3. (Detection by travel time)
When performing detection based on travel time as the travel amount detection method, for example, the wireless communication device 100 can use an acceleration sensor, a vibration sensor, or the like as the sensor unit 105.

  FIG. 13 is a diagram showing the flow of the movement time detection process.

  First, the sensor unit 105 sets the walking flag to the OFF state (S400), initializes the measurement time t by setting it to 0 (S401), and starts measuring the measurement time t (S402). That is, the elapsed time is measured based on the output of the timer unit 104.

  The sensor unit 105 starts the loop process of the process S403 and acquires, for example, the output of the acceleration sensor (S404).

  The sensor unit 105 determines whether or not the acquired output value exceeds a predetermined upper limit value (S405), and determines that the output value exceeds a predetermined upper limit value when the output value is larger than the predetermined upper limit value ( YES in S405).

  On the other hand, when it is determined in the above-described processing S405 that the output value does not exceed the predetermined upper limit value (NO in S405), it is determined whether or not the output value exceeds the predetermined lower limit value (S406). If the acquired output value is smaller than the predetermined lower limit value, the sensor unit 105 determines that the output value exceeds the predetermined lower limit value (YES in S406).

  When it is determined in the above-described process S405 that the output value exceeds a predetermined upper limit value (YES in S405), or when it is determined in the above-described process S406 that the output value exceeds a predetermined lower limit value (YES in S406). The walking flag is changed to the ON state (S407).

  The sensor unit 105 determines whether or not the measurement time t is equal to or longer than a predetermined unit time (S408), and when it is determined that the measurement time t is equal to or longer than the predetermined unit time, the loop processing from S403 to S408 is ended. To do. On the other hand, when it is determined that the measurement time t is not equal to or longer than the predetermined unit time, the sensor unit 105 returns to the above-described process S403 and executes the processes from the process S404.

  The sensor unit 105 determines whether or not the walking flag is in the ON state when the loop processing from S403 to S408 is finished (S409).

  When the walking flag is in the ON state (YES in S409), the sensor unit 105 outputs the measurement time (S410) and executes the process from the above-described process S400 again. Note that the execution of this detection process may be terminated after the above-described process S410 is executed.

  On the other hand, when the sensor unit 105 determines that the walking flag is not in the ON state (NO in S409), the sensor unit 105 executes the process from the above-described process S400 again. That is, in this case, the above-described process S410 is not executed, and the measurement time t is not output. If it is determined in the above-described process S409 that the walking flag is not in the ON state (NO in S409), a signal indicating that there is no detection result may be output. Further, in the above-described process S409, when it is determined that the walking flag is not in the ON state (NO in S409), the execution of this detection process may be terminated.

  The control unit 101 of the wireless communication device 100 can acquire the measurement time detected by the sensor unit 105 by receiving the output from the sensor unit 105 via the communication line 120.

  The control unit 101 can measure the time during which the user 400 carrying the wireless communication device 100 is moving by managing the cumulative addition of the measurement time acquired from the sensor unit as the movement time.

  FIG. 7 is a diagram illustrating the relationship between the output of the sensor unit and the movement time.

  FIG. 7A shows the output value of the sensor unit on the vertical axis and the time on the horizontal axis. FIG. 7B is a diagram illustrating a unit time used for the detection process in the time indicated on the horizontal axis of FIG. 7A, FIG. 7C, and FIG. 7D. FIG. 7C is a diagram in which the travel time measured based on the output value of the timer unit is shown on the vertical axis, and the elapsed time is shown on the horizontal axis. FIG. 7D is a diagram showing the total movement time on the vertical axis and the elapsed time on the horizontal axis.

  In the example shown in FIG. 7A, a state where the walking state is detected in the unit time 7B1 and the unit time 7B2 is shown, and a state where the walking state is not detected in the unit time 7B3 and the unit time 7B4 is shown. 7 shows a state in which a walking state is detected at 7B5 and unit time 7B6.

  In the example shown in FIG. 7C, the measurement time measured based on the output of the timer unit increases from the time point tc1 to the time point tc2, and after the value of the measurement time is reset at the time point tc2, the time point from the time point t2 is reached again. It shows a state of increasing toward tc3. In the example shown in FIG. 7 (C), the increase and reset are repeatedly executed in the unit time 7B1 to 7B6.

  In the example shown in FIG. 7D, since the output value of the sensor unit exceeds the upper limit 7A1 and the lower limit 7A2 shown in FIG. 7A in the unit time 7B1, it is determined that the walking state has been detected, and FIG. The measurement time at the time point tc2 of C) is set as the movement time, and the state is added to the total movement time at the time point tc2 of FIG.

  In the example shown in FIG. 7D, since the output value of the sensor unit exceeds the upper limit 7A1 and the lower limit 7A2 shown in FIG. 7A in the unit time 7B2, it is determined that the walking state is detected. 7 shows a state in which the measurement time at the time point tc3 of 7 (C) is set as the movement time and is added to the total movement time at the time point tc3 of FIG. 7 (D).

  On the other hand, in unit time 7B3 and unit time 7B4, since the output value of the sensor unit does not exceed both the upper limit 7A1 and the lower limit 7A2 shown in FIG. 7A, it is determined that the walking state has not been detected, and the movement time is reached. As a result, as shown in FIG. 7D, the total movement time from time tc3 to time tc6 is smaller than the increase at time tc1 and time tc3. . Thereby, the elapsed time in the non-walking state can be excluded from the travel time.

  In the above-described example, the processing flow shown in FIG. 13 is executed in the sensor unit 105, but may be executed in the control unit 105. In this case, the control unit 101 acquires the sensor output value as shown in FIG. 7A from the sensor unit 105 via the communication line 120. Furthermore, in this case, in the execution of the process S410 shown in FIG. 13, the control unit 101 outputs the measurement time to the element that executes the process S102 shown in FIG. 4 using a technique such as interprocess communication.

Moreover, in execution of process S410 shown in FIG. 13, you may output the signal to the effect of having detected the step count instead of outputting measurement time. In this case, the control unit 105 uses the preset unit time as the measurement time (movement time) based on the signal indicating that the number of steps has been detected in the execution of the process S410 shown in FIG. Can be added.
[5-4. Detection by travel time (Part 2)]
In the detection of the movement amount based on the movement time described above, the movement amount can be obtained by accumulating the measurement time multiplied by the weighting count corresponding to the output value of the acceleration sensor used as the sensor unit 105.

  Thereby, it becomes possible to adjust the detection value of movement time according to the walking state at the time of movement, and it can improve detection accuracy.

  FIG. 20 is a diagram showing a flow of measurement time and output level detection processing. In the processing procedure shown in FIG. 20, the same reference numerals are assigned to the processing procedures having the same contents as the processing procedure shown in FIG. The process procedure illustrated in FIG. 20 is different from the process procedure illustrated in FIG. 13 in that, for example, processes S411 to S424 are added. Therefore, for simplification of description, description of processing procedures having the same contents is partially omitted.

  First, the sensor unit 105 performs an initial setting for executing the detection process.

  The sensor unit 105 initializes the output level by setting the output level variable R to 0 (S411). Here, as the output level variable R, an array type variable having elements corresponding to a range of values that the output level can take can be used. For example, when the output level can take a range of three stages of 0, 1 and 2, the output level variable R can be an array type variable having two elements. For example, information relating to output level 1 is stored in element 1 of output level variable R, information relating to output level 2 is stored in element 2 of output level variable R, and information relating to output level 0 is not stored in any element. .

  Further, the sensor unit 105 initializes the walking flag by setting the walking flag to the OFF state (S400).

  For example, the sensor unit 105 initializes the measurement time t by setting a zero value to the measurement time t (S401).

  The sensor unit 105 starts measuring the measurement time t (S402) and starts loop processing S403.

  The sensor unit 105 acquires the output of the sensor in the loop processing S403 described above (S412). For example, an output value output from the acceleration sensor is acquired.

  The sensor unit 105 determines whether or not the obtained output value of the sensor exceeds the zero value (S413). If it is determined that the output value exceeds the value (YES in S413), the loop variable i is initialized and the loop process S414 is performed. Start.

  First, the sensor unit 105 determines whether or not the output acquired in the above-described process S412 exceeds a predetermined upper limit value (i) (S415).

  FIG. 10 is a diagram showing an example of the content of the upper limit value (i). In the example shown in FIG. 10, the upper limit (1) is 50 when the loop variable i = 1. In the example shown in FIG. 10, the upper limit (2) is 100 when the loop variable i = 2.

  When the output value is larger than the predetermined upper limit value (i) in the above-described process S415, the sensor unit 105 determines that the output value exceeds the predetermined upper limit value (i) (YES in S415) and indicates the output level. The variable R (i) is updated by adding one (S416). That is, in the case of the first loop processing, the loop variable is i = 1, and one of the values stored for the element 1 among the array elements of the output level variable R is added and updated. For example, in the case of the first update, the value after the update is 1 because the 0 value is set in the above-described process S411.

  Further, the sensor unit 105 changes the walking flag to the ON state (S417).

  The sensor unit 105 determines whether or not the loop variable has reached the upper limit n of the number of loops (S418). If it is determined that the loop variable has not reached, the sensor unit 105 adds one to the loop variable and updates (S414 and S418). ), The process is executed from step S415.

  On the other hand, when it is determined in the above-described process S302 that the output value does not exceed the 0 value (NO in S413), the sensor unit 105 initializes the loop variable i and starts the loop process of process S419. Then, the sensor unit 105 determines whether or not the output value exceeds a predetermined lower limit value (i), similarly to the loop processing in step S414 (S420), and when it is determined that the output value exceeds (YES in S420). Then, one variable R (i) indicating the output level is added to the variable R indicating the output level and updated (S421). That is, in the case of the first loop processing, the loop variable is i = 1, and one of the values stored for the element 1 among the array elements of the output level variable R is added and updated. For example, in the case of the first update, the value after the update is 1 because the 0 value is set in the above-described process S411.

  FIG. 11 is a diagram showing an example of the content of the lower limit value (i). In the example shown in FIG. 11, when the loop variable i = 1, the lower limit (1) is −50. In the example shown in FIG. 11, when the loop variable i = 2, the lower limit (2) is −100.

  Further, the sensor unit 105 changes the walking flag to the ON state (S422).

  The sensor unit 105 determines whether the loop variable has reached the upper limit n of the number of loops (S423). If it is determined that the loop variable has not reached, the sensor unit 105 adds one to the loop variable and updates it (S419, S423). ), The process is executed from step S420.

  The sensor unit 105 determines whether or not the measurement time t is equal to or longer than a predetermined unit time after the loop process shown in S414 to S418 described above or the loop process shown in S419 to S423 described above is completed (S408). ).

  When it is determined that the sensor unit 105 is equal to or longer than the predetermined unit time, the loop processing from S403 to S408 described above ends. On the other hand, when it is determined that the measurement time t is not equal to or longer than the predetermined unit time, the sensor unit 105 returns to the above-described process S403 and executes the processes from the process S412.

  The sensor unit 105 determines whether or not the walking flag is in the ON state when the loop processing from S403 to S408 is finished (S409).

  When the walking flag is in the ON state (YES in S409), the sensor unit 105 outputs the measurement time t and the output level R (S424), and executes the process from the above-described process S411 again. Note that after executing the above-described process S424, the execution of this detection process may be terminated.

  On the other hand, when the sensor unit 105 determines that the walking flag is not in the ON state (NO in S409), the sensor unit 105 executes the process from the above-described process S400 again. That is, in this case, the above-described process S424 is not executed, and the measurement time t and the output level R are not output. If it is determined in the above-described process S409 that the walking flag is not in the ON state (NO in S409), a signal indicating that there is no detection result may be output. Further, in the above-described process S409, when it is determined that the walking flag is not in the ON state (NO in S409), the execution of this detection process may be terminated.

  The control unit 101 of the wireless communication apparatus 100 can acquire the measurement time and the output level detected by the sensor unit 105 by receiving the output from the sensor unit 105 via the communication line 120.

  The control unit 101 of the wireless communication apparatus 100 can acquire the number of appearances of each output level by referring to the elements included in the array of output levels R acquired from the sensor unit 105. That is, by referring to the value stored in the element 1 included in the array of the output level R, the number of appearances of the output level 1 can be acquired. Further, by referring to the value stored in the element 2 included in the array of the output level R, the number of appearances of the output level 2 can be acquired.

  The control unit 101 of the wireless communication device 100 can acquire the travel time by cumulatively adding a value obtained by adjusting the acquired measurement time t according to the acquired output level R.

  For example, the control unit 101 refers to the element of the appearance level R, identifies the maximum output level where the number of appearances is one or more, and uses the coefficient corresponding to the identified output level to measure the measurement time t Can be obtained by adjusting the measurement time t.

  FIG. 22 is a diagram illustrating an example of the contents of coefficients stored in association with output levels. In the example shown in FIG. 22, the coefficient (1.0) is stored for the output level (1). In the example shown in FIG. 22, the coefficient (1.5) is stored for the output level (2). This is because the larger the output level value is, for example, the greater the up-and-down motion during walking, so the walking speed is estimated to be high, and the coefficient value multiplied by the measurement time t in proportion to the output level is This is an example of a large setting. That is, as the coefficient value is larger than 1, the acquired value becomes larger than the measurement time, and as a result, the increase in the total movement amount increases, and a predetermined condition is determined in the determination of the above-described process S104. It becomes easy to satisfy. Further, as the coefficient value is smaller than 1 (for example, 0.5), the acquired value becomes smaller than the measurement time, and as a result, the increase in the total movement amount becomes smaller, and the above-described process S104. In this determination, it becomes difficult to satisfy a predetermined condition.

  The above calculation process is expressed by the following equation. Here, x is a movement time, k (i) is a coefficient corresponding to the output level, and t is a measurement time. In the above example, i represents the maximum output level where the number of appearances is one or more.

  The control unit 101 measures the total movement amount indicating the degree to which the user 400 carrying the wireless communication device 100 has moved by setting the movement time acquired by the above calculation as the movement amount and adding it to the total movement amount. Can do.

  FIG. 21 is a diagram illustrating the relationship between the output of the sensor unit and the movement time.

  FIG. 21A shows the output value of the sensor unit on the vertical axis and the time on the horizontal axis. FIG. 21B is a diagram illustrating a unit time used for the detection process in the time indicated on the horizontal axis of FIG. 21A, FIG. 21C, and FIG. FIG. 21C is a diagram in which the travel time measured based on the output value of the timer unit is shown on the vertical axis, and the elapsed time is shown on the horizontal axis. FIG. 21D is a diagram showing the total movement time on the vertical axis and the elapsed time on the horizontal axis.

  The example shown in FIG. 21 (A) shows a state in which a walking state exceeding the output value 50 is detected in the unit time 21B1, and a state in which a walking state exceeding the output value 100 is detected in the unit time 21B to the unit time 21B5. It shows how the walking state exceeding the output value 50 is detected in the unit time 21B6.

  In the example shown in FIG. 21C, the measurement time measured based on the output of the timer unit increases from the time point tc1 to the time point tc2, and the value of the measurement time is reset at the time point tc2, and then the time point from the time point t2 again. It shows a state of increasing toward tc3. In the example shown in FIG. 21C, the increase and reset are repeatedly executed in the unit times 21B1 to 21B6.

  In the example shown in FIG. 21D, the output value of the sensor unit in the unit time 21B1 exceeds the upper limit 21A1 and the lower limit 21A2 shown in FIG. 21A, but does not exceed the upper limit 21A3 and the lower limit 21A4. It is determined that a walking state (output level 1) exceeding (50) or the output value (−50) is detected, and the coefficient k (1) is added to the measurement time at the time point tc2, which is the end of the unit time 21B1 in FIG. The value td2 (movement time) obtained by multiplying the values is added to the total movement time at time tc2 in FIG. 21 (D).

  In the example shown in FIG. 21D, since the output value of the sensor unit exceeds the upper limit 21A3 and the lower limit 21A4 shown in FIG. 21A in the unit time 21B2, the output value (100) or the output value (− 100), a value td3 obtained by multiplying the measurement time at the time point tc3, which is the end of the unit time 21B2, by the coefficient k (2) in FIG. 21C. (Moving time) is added to the total moving time at time point tc3 in FIG.

  In the example shown in FIG. 21 (D), the output value of the sensor unit exceeds the upper limit 21A3 and the lower limit 21A4 shown in FIG. 21 (A) in the unit time 21B3 to unit time 21B5. Alternatively, it is determined that a walking state (output level 2) exceeding the output value (−100) has been detected, and a value obtained by multiplying the measurement time from time tc4 to time tc6 in FIG. 21C by the coefficient k (2). A state is shown in which td4 to td6 (movement time) are added to the total movement time from time tc4 to time tc6 in FIG.

  In the example shown in FIG. 21D, the output value of the sensor unit exceeds the upper limit 21A1 and the lower limit 21A2 shown in FIG. 21A in the unit time 21B6, but does not exceed the upper limit 21A3 and the lower limit 21A4. It is determined that a walking state (output level 1) exceeding the output value (50) or the output value (−50) is detected, and the coefficient k () is added to the measurement time at the time point tc7 which is the end of the unit time 21B6 in FIG. A state in which the value td7 (travel time) obtained by multiplying 1) is added to the total travel time at time tc7 in FIG.

  In the above example, the processing procedure illustrated in FIG. 20 is performed in the sensor unit 105, but may be performed in the control unit 105. In this case, the control unit 101 acquires the sensor output value as shown in FIG. 21A from the sensor unit 105 via the communication line 120. Furthermore, in this case, in the execution of the process S410 shown in FIG. 20, the control unit 101 outputs the measurement time and the output level to the element that executes the process S102 shown in FIG. 4 using a technique such as interprocess communication.

  Moreover, in execution of process S410 shown in FIG. 20, instead of outputting the measurement time, a signal indicating that the number of steps has been detected may be output. For example, the output level R may be used as a signal indicating that the number of steps has been detected. In this case, only the output level R is output in the execution of the process S410 shown in FIG. When performing the above-described calculation based on the output level R output in the execution of the process S410 shown in FIG. 20, the control unit 105 can perform a calculation process using a preset unit time as a measurement time.

  Moreover, although the example which multiplies the coefficient according to an output level with respect to measurement time and acquired a movement time was shown in the above-mentioned example, a present Example is not limited to this. For example, the movement time can be acquired by adding or subtracting a correction value corresponding to the output level to the measurement time.

[1. Overview of Example 2]
The present embodiment adds a process of changing a predetermined condition to be compared with the total movement amount according to the base station in the process flow shown in FIG.

  FIG. 14 is a diagram illustrating components of a program executed in the wireless communication terminal according to the present embodiment. The components of the program shown in FIG. 14 are given the same reference numerals for the same components as the components shown in FIG. That is, the components of the program shown in FIG. 14 differ from the components shown in FIG. 3 in that, for example, a base station identification unit PG106, a threshold storage unit PG107, and a threshold acquisition unit PG108 are added. . Therefore, for simplification of description, description of components having the same contents is partially omitted.

  The base station identification unit PG106 causes the control unit 101 to function as a configuration for acquiring the base station ID of the radio base station by analyzing a signal received from the radio base station 200 via the radio communication unit 111.

  The threshold storage unit PG107 causes the control unit 101 to function as a component that stores a predetermined condition to be compared with the total movement amount in the main storage unit 102 or the auxiliary storage unit 103 in association with the base station ID.

The threshold acquisition unit PG108 causes the control unit 101 to function as a component that acquires a predetermined condition stored in the main storage unit 102 or the auxiliary storage unit 103 in association with the base station ID.
[2. Process flow
FIG. 15 is a diagram illustrating a flow of detection processing in the wireless communication apparatus according to the present embodiment. In the processing flow shown in FIG. 15, the same reference numerals are assigned to the processing procedures having the same contents as the processing procedure of the first embodiment shown in FIG. The processing procedure illustrated in FIG. 15 is different from the processing procedure illustrated in FIG. 4 in that, for example, processing S106 and processing S107 are added. Therefore, for simplification of description, description of processing procedures having the same contents is partially omitted.

  First, in the present embodiment, the control unit 101 initializes the total movement amount (S100), and acquires a base station ID by analyzing a signal received from a radio base station via the radio communication unit 111 (S106). ). Here, it is assumed that the signal received from the radio base station includes an ID for identifying the radio base station. For example, in an IEEE802.11 series wireless LAN system, an SSID (Service Set Identifier) or ESSID (Extended Service Set Identifier) that is an identifier of a wireless LAN access point can be used as the ID of the wireless base station. Note that specifications such as a data structure of a signal received from the radio base station are not particularly limited, and thus detailed description thereof is omitted.

  Next, the control unit 101 determines whether or not the operation state of the wireless communication apparatus 100 satisfies the detection execution condition (S101). For example, the control unit 101 acquires the reception intensity of the radio wave transmitted from the wireless access point as the wireless base station 200 from the wireless LAN module used as the second communication unit 113. Then, the control unit 101 determines whether or not the operation state of the wireless communication device 100 satisfies the detection execution condition by determining whether or not the acquired reception intensity is equal to or less than a predetermined threshold (S101). .

  In the above example, the control unit 101 determines that the operation state of the wireless communication apparatus 100 satisfies the detection execution condition when the reception intensity is equal to or less than a predetermined threshold (YES in S101), and the movement amount detection process Is executed (S102).

  The control unit 101 adds the detected movement amount to the total movement amount and updates the total movement amount (S103).

  The control unit 101 refers to the threshold value stored in advance in the main storage unit 102 or the auxiliary storage unit 103 using the base station ID acquired in the above-described process S106, and stores it in association with the acquired base station ID. The set threshold is acquired (S107).

  FIG. 16 is a diagram illustrating a content example of the threshold when the movement distance is used as the total movement amount. In the example shown in FIG. 16, the threshold “800 m” is set for the base station ID “AAA”, the threshold “500 m” is set for the base station ID “BBB”, and the threshold “1200 m” is set for the base station ID “CCC”. Has been.

  FIG. 17 is a diagram showing an example of the contents of the threshold when the movement time is used as the movement amount. In the example illustrated in FIG. 17, the threshold “15 minutes” for the base station ID “AAA”, the threshold “10 minutes” for the base station ID “BBB”, and the threshold “20 minutes” for the base station ID “CCC”. "Is set.

  The control unit 101 determines whether or not the total movement amount satisfies a predetermined condition (S104). That is, the control unit determines whether or not the total movement amount updated in the above-described process S103 exceeds the threshold acquired in the above-described process S107 (S104).

  For example, when the movement distance is used as the total movement amount and the base station ID acquired in the above-described process S106 is “AAA”, the threshold value is “800 m” in the example illustrated in FIG. It is determined whether or not the movement distance as the total movement amount exceeds a threshold “800 m”.

  When the control unit 101 determines in the above-described process S104 that the total movement amount exceeds the threshold acquired in the above-described process S107 (YES in S104), the control unit 101 changes the operation state of the wireless communication unit 111. For example, the control unit 101 changes the operation state of the wireless communication unit 111 to a state where radio waves are not transmitted.

  On the other hand, when it is determined in the above-described process S104 that the total movement amount does not exceed the threshold acquired in the above-described process S107 (NO in S104), the control unit 101 executes the process from the above-described process S101. Here, when it is determined in the above-described process S101 that the detection execution condition is not satisfied (NO in S101), the control unit 101 executes the process from the above-described process S100. In this case, the control unit 101 may suspend the sensor unit 105. Thereby, power consumption by the sensor unit 105 can be reduced.

  With the above processing, the condition to be compared with the total movement amount can be automatically changed according to the base station. That is, the condition for changing the operation state of the radio communication unit can be changed according to the radio base station that provides the radio communication area to which it last belonged.

  Thereby, for example, when the standard of the amount of movement to the nearest public transportation differs depending on the radio base station, it is possible to automatically select a more optimal threshold value.

  Note that the threshold value set corresponding to the base station ID may be updated using a value input by the user via the setting screen.

  In addition, in the wireless communication device equipped with the GPS function, when acquiring the base station ID in the above-described process S106, from the map information to the nearest transportation facility based on the current position acquired using the GPS function. The movement amount guideline (for example, the movement distance or the movement time) may be acquired, and the acquired movement amount of the guideline may be stored in the main storage unit 102 or the auxiliary storage unit 103 in association with the base station ID.

[1. Overview of Example 3]
In this embodiment, a plurality of processes for changing the operation state of the wireless communication unit 111 are added in the process flow shown in FIG.

  The radio communication apparatus 100 according to the present embodiment has a function of selectively using an active scan method and a passive scan method as means for searching for the presence of a radio communication base station that provides the radio communication region 300.

  Here, the active scan method is a method in which a radio communication device first transmits a radio wave (probe request), waits for a response from a radio base station (probe response), and receives a response from the radio base station. A method for connection.

  Here, the passive scan method refers to waiting for reception of radio waves (beacons) periodically transmitted from the radio base station for a certain period of time, and based on the radio waves (beacons) received from the radio base stations. A method of transmitting radio waves from a wireless communication device after confirming a channel used for wireless communication and performing wireless connection with a wireless base station.

  In general, the search process using the passive scan method consumes more power than the search process using the active scan method. This is due to a difference in standby time for receiving radio waves transmitted from the radio base station.

  That is, in the active scan method, the time for waiting for reception of a response from the radio base station in response to transmission of the probe request signal is normally set to 10 ms (milliseconds). On the other hand, in the passive scan method, the beacon signal transmission interval from the radio base station is normally set to 100 ms (milliseconds), so that the standby time for receiving the beacon signal from the radio base station is normal. 100 ms (milliseconds) is set. Accordingly, in the search process using the passive scan method, the standby time is longer than that in the active scan method, and more power is required to operate the receiving circuit.

  From the above viewpoint, when importance is placed on power saving of the operating power supply of the wireless communication device 100, it is desirable to execute the search process by the active scan method.

  However, transmission of radio waves from the radio communication device 100 may be suppressed in a place where the radio waves transmitted from the radio communication device 100 in the search process using the active scan method may affect the operation of other electronic devices. May be needed.

  From the above viewpoint, when importance is attached to the point of preventing malfunction of other electronic devices due to radio waves transmitted by the wireless communication device, it is desirable to execute the search process by the passive scan method.

  Therefore, in the present embodiment, for example, when the search process is executed by the wireless communication terminal 100 that has detected that the wireless communication area 300 has moved out of the range, the active scan method and the passive scan method are selectively executed. The function to be added is added to the wireless communication apparatus 100.

  FIG. 18 is a diagram illustrating components of a program executed in the wireless communication terminal according to the present embodiment. The components of the program shown in FIG. 18 are assigned the same reference numerals to the parts having the same contents as the configuration shown in FIG. The components of the program shown in FIG. 18 differ from the contents shown in FIG. 3 in that, for example, a wireless method selection unit PG109 is added. Therefore, for simplification of description, description of components having the same contents is partially omitted.

  Radio scheme selection section PG109 causes control section 101 to function as a component that selects a scheme to be used for a radio base station search process in accordance with the operating state of radio communication apparatus 100.

The hardware configuration of the wireless communication terminal according to the present embodiment is the same as the configuration shown in FIG.
[2. Process flow
FIG. 19 is a diagram illustrating a flow of detection processing in the wireless communication device 100 according to the present embodiment. In the processing flow shown in FIG. 19, the same reference numerals are assigned to the processing procedures having the same contents as the processing procedure of the first embodiment shown in FIG. The processing procedure shown in FIG. 19 is different from the processing procedure shown in FIG. 4 in that, for example, processing S108 and processing S109 are added. Therefore, for simplification of description, description of processing procedures having the same contents is partially omitted.

  First, in the present embodiment, the control unit 101 of the wireless communication device 100 initializes the total movement amount (S100), and determines whether the operation state of the wireless communication device 100 satisfies the detection execution condition (S101). .

  For example, the control unit 101 acquires the reception intensity of the radio wave transmitted from the wireless access point as the wireless base station 200 from the wireless LAN module used as the second communication unit 113. Then, the control unit 101 determines whether or not the operation state of the wireless communication device 100 satisfies the detection execution condition by determining whether or not the acquired reception intensity is equal to or less than a predetermined threshold (S101). .

  In the above example, the control unit 101 determines that the operation state of the wireless communication device 100 satisfies the detection execution condition when the reception intensity is equal to or less than a predetermined threshold (YES in S101), and the wireless communication unit 111 The operating state is changed (S108). For example, when the wireless communication device 100 exists outside the wireless communication region 300, it is determined that the reception intensity of the radio wave transmitted from the wireless base station 200 is equal to or less than a predetermined threshold as shown in the above example.

  In the above-described process S108, the control unit 101 changes the operation state of the radio communication device 100 to an operation state in which a search process for searching for the radio base station 200 is executed. For example, from the viewpoint of emphasizing power saving of the operating power of the wireless communication device 100, the control unit 101 performs wireless communication via the communication line 120 for a control signal for changing to an operating state in which search processing by the active scan method is executed. The data is transmitted to the unit 111 (S108).

  Then, the control unit 101 detects the movement amount (S102), updates the total movement amount (S103), and determines whether the total movement amount satisfies a predetermined condition (S104). For example, when the movement distance is detected as the movement amount detected in the above-described process S102, the control unit 101 determines that the total movement distance obtained by accumulatively adding to the detected movement distance is larger than the predetermined threshold value. It is determined that the movement amount satisfies a predetermined condition (YES in S104).

  In this case, there is a possibility that the user 400 carrying the wireless communication device 100 is present in the vicinity of a place where the operation of other electronic devices may be affected by the radio wave transmitted from the wireless communication device. is there.

  For this reason, the control unit 101 changes the operation state of the wireless communication unit 111 to a state in which radio waves are not transmitted. For example, from the viewpoint of preventing malfunction of other precision devices due to radio waves transmitted from the wireless communication device, the control unit 101 transmits a control signal for changing to an operation state for executing search processing by the passive scan method. Is transmitted to the wireless communication unit 111 (S105).

  On the other hand, when it is determined in the above-described process S104 that the total movement amount does not satisfy the predetermined condition (S104), the control unit 101 determines whether or not the detection execution condition is satisfied (S109).

  For example, the control unit 101 acquires the reception intensity of the radio wave transmitted from the wireless access point serving as the wireless base station 200 from the wireless LAN module used as the second communication unit 113 in the above-described process S109. Then, the control unit 101 determines whether or not the operation state of the wireless communication apparatus 100 satisfies the detection execution condition by determining whether or not the acquired reception intensity is equal to or less than a predetermined threshold (S109). .

  In the above example, the control unit 101 determines that the operation state of the wireless communication device 100 satisfies the detection execution condition when the reception intensity is equal to or less than a predetermined threshold (YES in S109), and the above processing S102 Execute the process. For example, when the wireless communication device 100 exists outside the wireless communication region 300, it is determined that the reception intensity of the radio wave transmitted from the wireless base station 200 is equal to or less than a predetermined threshold as shown in the above example.

  On the other hand, when it is determined that the detection execution condition is not satisfied (NO in S109), the control unit 101 executes the process from the above-described process S100. In this case, since the wireless communication device 100 exists within the range of the wireless communication area 300, the wireless connection with the wireless base station 200 is established by the search process, and wireless communication via the wireless base station 200 is possible. It becomes.

  If it is determined in the above-described process S109 that the detection execution condition is not satisfied, the sensor unit 105 may be suspended. Thereby, power consumption by the sensor unit 105 can be reduced.

Diagram showing system configuration The figure which shows the hardware constitutions of a radio | wireless communication apparatus FIG. 3 is a diagram illustrating constituent elements of a program executed in the wireless communication apparatus according to the first embodiment. The figure which shows the flow of the detection process which concerns on Example 1. FIG. Diagram showing the relationship between sensor output and pedometer output Figure showing the relationship between sensor output and pedometer output (Part 2) Diagram showing the relationship between sensor output and travel time Diagram showing the flow of processing to detect the number of steps The figure which shows the flow of a process which detects the number of steps and an output level Diagram showing the relationship between output level and upper limit Diagram showing the relationship between output level and lower limit Diagram showing the relationship between output level and distance per step Diagram showing the flow of processing to detect travel time FIG. 10 is a diagram illustrating constituent elements of a program executed in the wireless communication apparatus according to the second embodiment. The figure which shows the flow of the detection process which concerns on Example 2. FIG. The figure which shows the relationship between base station and threshold value (distance) The figure which shows the relationship between the base station and the threshold value (time) FIG. 10 is a diagram illustrating constituent elements of a program executed in the wireless communication apparatus according to the third embodiment. The figure which shows the flow of the detection process which concerns on Example 3. The figure which shows the flow of the process which detects movement time and an output level Diagram showing the relationship between sensor output and travel time Diagram showing the relationship between output level and coefficient

Claims (5)

A wireless communication device,
A sensor unit for detecting vibration;
A movement amount detection unit that detects a movement amount based on an output of the sensor unit;
A detection control unit that executes a movement amount detection process in the movement amount detection unit when the reception intensity of the radio wave transmitted from the base station is equal to or less than a predetermined threshold;
A total movement amount storage unit that stores a total movement amount obtained by cumulatively adding the detected movement amounts; a total movement amount determination unit that determines whether or not the total movement amount exceeds a predetermined threshold; ,
A wireless communication control unit that changes the operation state of the wireless communication device to a state in which the output power of the radio wave is limited when it is determined that the total movement amount exceeds a predetermined threshold;
A wireless communication device. A wireless communication device,
The detection control unit
When the received intensity exceeds a predetermined threshold, the movement amount detection process in the movement amount detection unit is suspended.
The wireless communication apparatus according to claim 1. A wireless communication device,
A threshold storage unit that stores a movement amount serving as a guideline until execution of the change of the operation state by the wireless communication control unit is associated with each base station in the wireless system;
A base station identification unit for acquiring information for identifying the base station based on a radio signal received from a base station in the wireless system;
A threshold acquisition unit that acquires a movement amount corresponding to a base station specified by information for identifying the base station among movement amounts stored by the threshold storage unit, using information that identifies the acquired base station. When,
Have
The total movement amount determination unit uses the movement amount acquired by the threshold acquisition unit as a threshold for comparing with the total movement amount.
The wireless communication device according to claim 1 . A wireless communication device,
The movement amount detector
A first movement amount detection unit that determines whether or not the movement unit is in a movement state based on an output of the sensor unit, and detects a measured elapsed time as a movement amount when it is determined that the movement unit is in a movement state; ,
A second movement amount detection unit that detects the number of steps of a user carrying the wireless communication device based on an output of the sensor unit, and detects a movement distance calculated based on the detected number of steps as a movement amount;
Any one of,
The wireless communication apparatus according to claim 1 . A program,
A wireless communication device having a sensor unit for detecting vibrations,
A movement amount detection unit that detects a movement amount based on an output of the sensor unit;
A total movement amount storage unit for storing a total movement amount obtained by accumulatively adding the detected movement amounts;
A detection control unit that executes a movement amount detection process in the movement amount detection unit when the reception intensity of the radio wave transmitted from the base station is equal to or less than a predetermined threshold;
A total movement amount determination unit that determines whether or not the total movement amount exceeds a predetermined threshold;
When it is determined that the total movement amount exceeds a predetermined threshold, the wireless communication control unit changes the operation state of the wireless communication device to a state in which the output power of the radio wave is limited,
Program to function as .