JP2010053632A - Portable radio communication device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress a fall in the service lifetime of a battery, in a portable radio communication device which serves as a portable key of a smart entry system. <P>SOLUTION: The portable key 20 of the smart entry system 1 comprises: an LF-receiving part 22 held in operation to receive constantly; a control part 21, capable of setting a normal control mode and a low power consumption control mode as a control mode, switching the control mode from the low power consumption control mode to the normal control mode, when a start signal is received by the LF-receiving part 22, and radio-transmitting a response signal, corresponding to the received start signal, to the RF transmitting part; and a carrying detecting sensor 24 detecting that the portable key 20 is carried with a user. Only when a carried state is detected by the carrying-detecting sensor 24, can the control mode of the control part 21 be switched, from the low power consumption control mode to the normal control mode. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a portable wireless communication device that functions as a portable key of a smart entry system in a smart entry system mounted on a vehicle.

JP 2002-316618 A

  Today, it is becoming popular to equip automobiles with so-called smart key systems. In the smart key system, when there is a mobile key (smart key) in the verification area formed outside the vehicle, verification is performed by wireless communication between the mobile key and the communication device on the vehicle side. If affirmative, there is a smart entry system that permits unlocking of a door lock by a predetermined door lock operation (Patent Document 1). Specifically, the vehicle communication device transmits a polling signal in the LF band to the outside of the vehicle to search for a portable key, and transmits a signal requesting transmission of an ID code to the searched portable key. The portable key that has received the message returns an ID code stored therein. On the vehicle side, the ID code is received and collated, and if the collation is OK, door unlocking permission is given.

  In such a smart key system, an LF (long wave) band radio wave is used as a signal transmitted from the vehicle side to the portable key. The portable key side always supplies power to the built-in LF receiver IC so that the LF signal can be received at all times and keeps the reception standby state. On the other hand, the system is activated only when the activation LF signal is received from the vehicle side, and the sleep mode (low power consumption state) is set when not in use.

  However, as shown in FIG. 5, many home appliances that generate noise in the same frequency band as the LF signal that activates the control unit of the portable key have recently been on the market. If a mobile key is left in the vicinity of such home appliances, the mobile key may be accidentally activated under the influence of noise in the same frequency band, resulting in a significant decrease in the battery life of the mobile key. There is a problem of end.

  An object of the present invention is to suppress a reduction in battery life in a portable wireless communication device that forms a portable key of a smart entry system.

Means for Solving the Problems and Effects of the Invention

In order to achieve the above object, a wireless portable communication device of the present invention includes:
In a smart entry system mounted on a vehicle, a portable wireless communication device that wirelessly transmits an ID code stored in itself in response to a request by wireless communication from the vehicle for key verification,
An LF receiver that is always kept in operation to receive an activation signal transmitted wirelessly as a radio wave in a predetermined LF band from the vehicle;
As a control mode, a control unit having a normal control mode and a low power consumption control mode that consumes less power than the normal control mode, wherein the LF receiving unit is set in the low power consumption control mode. When the activation signal is received, control mode switching means for switching the control mode to the normal control mode, and after switching to the normal control mode, a response signal corresponding to the activation signal is sent from the RF transmission unit. A control unit having transmission instruction means for wirelessly transmitting the vehicle as a radio wave of a predetermined RF band;
Portable detection means for detecting that the portable wireless communication device is in a portable state by a user;
Control mode switching restriction that permits switching from the low power consumption control mode to the normal control mode by the control mode switching means when the carrying state is detected and prohibits when the carrying state is not detected. Means,
It is characterized by providing.

  According to the configuration of the present invention, the wireless mobile communication device does not start the control unit (from the sleep mode to the normal control mode) unless it is carried by the user. In a situation where a wireless portable communication device is placed around a home appliance at home, there is no possibility that the wireless portable communication device is determined to be carried because it is left unmoved. For this reason, even if it is surrounded by home appliances that generate noise in the same frequency band as the LF signal that activates the mobile key control unit, the mobile key control unit may be erroneously activated under the influence of the noise. There is nothing wrong. Therefore, it is possible to suppress the useless life reduction of the battery of the wireless portable communication device.

  In addition, the wireless portable communication device of the present invention can be provided with an activation signal determination means for determining whether or not the activation signal received by the LF receiver is a regular signal. In this case, the control mode switching limiting means is that the activation signal received by the LF receiver is a normal signal when the control mode switching means switches from the low power consumption control mode to the normal control mode. It can be configured to permit if the carrying state is detected on the premise that it is determined that, and prohibit it regardless of whether it is the carrying state when it is determined that the signal is not a legitimate signal. . According to this configuration, even if it is determined that the activation signal is a normal signal, the control unit does not activate (becomes a normal control mode) unless the activation signal is in a portable state. Accordingly, it is possible to further suppress the useless life reduction of the battery of the wireless portable communication device.

  The portable detection means in the present invention is configured to consume the battery of the wireless portable communication device. For this reason, the portable detection means of the present invention can be configured to have a normal detection mode for driving the portable state so that the portable state can be detected and a detection stop mode in which the driving is stopped. In this case, when the portable detection means is not used, a detection stop mode is set that consumes less power than the detection driving state. Therefore, when the activation signal is received by the LF receiver, the detection mode Can be configured to include normal detection mode setting means for switching from the detection stop mode to the normal detection mode. As a result, not only the control unit but also the portable detection means can be brought into a low power consumption state. Therefore, it is possible to further suppress the useless life reduction of the battery of the wireless portable communication device.

  Further, in the case where the above-described activation signal determination means is provided in this configuration, the activation received by the LF reception unit when the detection mode switching means switches the detection stop mode to the normal detection mode. A detection mode switching limiting unit may be provided that permits the signal when it is determined to be a regular signal and prohibits the signal when it is determined that the signal is not a regular signal. With this configuration, the portable detection means does not enter the detection drive state (normal detection mode) at unnecessary timing, so that it is possible to further suppress the useless life reduction of the power supply of the wireless portable communication device.

  The detection mode switching means is configured to detect the detection mode of the portable detection means as normal detection at a predetermined timing after the control mode of the control unit is set from the sleep mode to the normal control mode by the control mode switching means. Detection mode switching limiting means for switching from the mode to the detection stop mode can be provided. Thereby, the useless lifetime reduction of the battery of a radio | wireless portable communication apparatus can be suppressed more. The timing at which the control mode of the control unit is set from the sleep mode to the normal control mode can be determined as the timing for switching from the normal detection mode to the detection stop mode. Thereby, it becomes possible to make the detection mode of a portable detection means into a state with lower power consumption in an earlier stage, and it can suppress further the useless lifetime reduction of the battery of a wireless portable communication machine.

  By the way, the portable detection means of the present invention is configured to include a vibration sensor that detects vibration of the wireless portable communication device main body, and the vibration sensor detects vibration exceeding a predetermined threshold level. It can be detected as a portable state. The portable detection means includes an acceleration sensor that detects acceleration of the wireless portable communication device body, and the case where the acceleration sensor detects acceleration exceeding a predetermined threshold level is defined as the portable state. It may be detected. The situation in which vibration or acceleration occurs in the wireless portable communication device is highly likely that the wireless portable communication device is being carried by the user. Carrying status can be detected.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a block diagram of a smart entry system 1 of the present embodiment. The smart entry system 1 includes a verification ECU 100 mounted on a vehicle 10 and a smart key (which is referred to as a so-called wireless portable key or electronic key and corresponds to the wireless portable communication device of the present invention) 20. It consists of With this configuration, a polling radio wave is wirelessly output in a predetermined key search area around the outside of the vehicle, and the smart key 20 existing in the key search area is searched based on wireless reception of the response signal. The ID code received wirelessly from the key 20 is collated, the door lock unlocking permission is given based on the collation result, and the door is unlocked when a predetermined door lock unlocking operation is detected in the door lock unlocking permitted state. A series of smart entry functions that unlocks by operating the lock mechanism is realized.

  The verification ECU 100 includes a microcomputer including a CPU, a ROM, a RAM, a memory, an input / output unit (I / O), and the like as main components. Further, an external storage device 101, an out-of-vehicle transmitter 111, an in-vehicle transmitter 112 and a receiver 120 are connected to the verification ECU 100. Various programs for realizing the smart entry function as described above are stored in a storage unit (ROM or the like) in the verification ECU 100. The external storage device 101 stores an ID code 101a for vehicle verification.

  The vehicle exterior transmitter 111 is provided in the driver's seat, the passenger seat, and the trunk opening / closing door of the vehicle. The vehicle interior transmitter 111 is built in, for example, the handle portion of each door, and periodically transmits an inquiry signal (request signal: for example, radio waves in the LF (long wave) band) around the door. This inquiry signal is output-adjusted so as to reach only within a predetermined key response area (outside vehicle detection area: FIG. 2) SA of about 70 cm to 1 m from each door. As a result, only the smart key 20 existing in the key response area SA can receive this inquiry signal, and is subject to the collation processing. When the collation matches, the door can be locked / unlocked by operating the switch of the vehicle door.

  The vehicle interior transmitter 112 is provided in the vehicle interior, and is provided in each of the front and rear depending on the vehicle type. It is also provided in the trunk at the rear of the vehicle. The vehicle interior transmitter 112 periodically transmits an inquiry signal (request signal: radio waves in the LF (long wave) band) to the vehicle interior. The output of this inquiry signal is adjusted so as to reach only within a predetermined key response area (in-vehicle detection area) TA in the passenger compartment. As a result, only the smart key 20 existing in the key response area TA can receive this inquiry signal, and is subject to the collation processing. When the collation matches, the engine start operation is validated (permitted), and the engine can be started by an engine start operation from an engine switch (not shown) (smart start function).

  The receiver 120 receives a response signal from the smart key 20 in the key response areas SA and TA (response signal: for example, a radio wave in the RF (high frequency) band) and sends the response signal to the verification ECU 100. Note that the response signal from the smart key 20 includes data that can identify in which of the key response areas SA and TA the smart key 20 exists.

  Furthermore, the smart entry function of the present invention is realized in cooperation with the door lock ECU 200 that is connected to the verification ECU 100 in communication. The verification ECU 100 and the door lock ECU 200 can communicate with each other via the in-vehicle LAN 50.

  The door lock ECU 200 is a control entity that controls locking or unlocking of vehicle doors (including trunk doors), and mainly includes a microcomputer including a CPU, a ROM, a RAM, a memory, an input / output unit (I / O), and the like. As a component. The door lock ECU 200 includes a door lock drive unit (actuator and its drive circuit) 210 that switches between a locked state (locked state) and an unlocked state (unlocked state) in the door locking mechanism of the vehicle 10. A detection unit 220 that detects the unlocked / locked state of the door lock of the vehicle 10, a detection unit 230 that detects the open / closed state of the door, and the like are connected. The door lock ECU 200, the drive unit 210, the detection units 220, 230, and the like are provided for each door of each seat, but only those related to the driver's seat door are illustrated here, and other illustrations are omitted. ing. However, the other doors are configured to perform the same function as the driver's seat.

  The smart key 20 (mobile key: portable wireless communication device) functions as a portable wireless communication device capable of transmitting and receiving data to and from the verification ECU 100. In this embodiment, the smart key 20 is shown in FIG. As described above, the control unit 21 has a configuration in which the LF reception unit 22, the RF transmission unit 23, and various operation units 25 are connected.

  The control unit 21 has a memory (not shown) for storing an ID code unique to the vehicle, and performs an operation unit for unlocking and locking the door lock by a user operation as a keyless entry function, door opening and closing, etc. A known operation unit 25 such as an operation unit is connected. The control unit 21 is supplied with driving power from the battery 30 which is a power source with a built-in key via the power line 31. The control mode includes a normal control mode and lower power consumption than the normal control mode. A low power consumption control mode (here, sleep mode) can be set.

  The LF receiver 22 is an LF receiver IC connected to an LF antenna 26 that receives various signals wirelessly transmitted from the vehicle 10 as radio waves in a predetermined LF band, and can always receive radio waves in the LF band. . That is, the LF receiving unit 22 is always supplied with driving power from the battery 30 via the power line 31 and maintains an operating state. For this reason, the LF receiver 22 is supplied with driving power from the battery 30 built in the key, but unlike the controller 21, unless the LF receiver 22 receives a special request from the outside such as a predetermined operation. The mode is not set to a lower power consumption mode.

  Note that the LF antenna 26 of the present embodiment is configured as each of the LF reception antennas 26x, 26y, and 26z having reception directivities in different three-axis directions, and these reception signals are input to the LF reception unit 22. The data included in the received signal is transmitted to the control unit 21, and the control unit 21 that receives the data includes the transmission data in the RF transmission unit 23 to transmit a response signal corresponding to the received signal based on the data. A control signal for transmission is transmitted.

  The RF transmission unit 23 receives the control signal from the control unit 21 and is driven based on the control signal, and wirelessly transmits the response signal to the outside from the transmission antenna 27 as a radio wave in a predetermined RF band.

  Further, the smart key 20 is provided with a mobile detection sensor 24 that detects that the main body of the smart key 20 is in a mobile state by the user. In addition, the portable detection sensor 24 of the present embodiment, like the control unit 21, is driven in a normal detection mode (normal drive mode) in which driving power is supplied from the battery 30 to the sensor 24 so that the portable state can be detected. ) And at least a low power consumption detection mode that consumes less power than the normal detection mode. Note that the low power consumption detection mode here is a detection stop mode (sensor OFF state) in which detection drive is stopped.

  The portable detection sensor 24 of the present embodiment is a vibration sensor that detects the vibration of the main body of the smart key 20, and is connected to the LF receiver 22. The LF receiver 22 to which the detection information of the vibration sensor 24 is input determines whether the detected vibration is a vibration exceeding a predetermined threshold level, and is determined to be a vibration exceeding the threshold level. The case is detected as the carrying state of the smart key 20. That is, in the present embodiment, the portable detection means of the present invention is configured with the portable detection sensor 24 and the LF receiver 22.

  The portable detection sensor 24 may be an acceleration sensor (G sensor) that detects the acceleration of the smart key 20 main body. When the acceleration sensor detects acceleration exceeding a predetermined threshold level, May be detected.

  Hereinafter, the door lock unlocking process by smart entry will be described.

  The verification ECU 100 wirelessly outputs (LF transmission) a polling signal (activation signal) from the transmitter 111 as an inquiry signal for searching for a portable key outside the vehicle at a predetermined cycle. On the other hand, when the user carrying the smart key 20 performs an operation (operation) to position the smart key 20 in the key response area (external vehicle detection area), the smart key 20 receives the LF receiver 22. Then, the polling signal is wirelessly received (LF reception), and the control unit 21 wirelessly outputs (RF transmission) a predetermined response signal in response to the polling signal.

  When the verification ECU 100 wirelessly receives (RF reception) this response signal, the verification ECU 100 checks the presence of the smart key 20 corresponding to the host vehicle 10 based on the response signal. When the presence of the corresponding smart key 20 is confirmed, a request signal (ID code request signal) for requesting an ID code unique to the corresponding smart key 20 from the transmitter 111 is output wirelessly (LF Send). In the case of the corresponding smart key 20, when the request signal is wirelessly received by the LF receiving unit 22, the control unit 21 transmits a signal including the stored ID code as a response signal in response to the RF transmission unit 23. Wireless output (RF transmission).

  When the response signal is wirelessly received by the receiver 120, the verification ECU 100 compares the ID code included in the response signal with the ID code stored by itself (verification process), and in the case of verification match (verification OK) Only in this case, it is possible to perform locking / unlocking operation of the door lock on the vehicle side.

  By the way, in the smart key 20 of the present embodiment, the control unit 21 is set to a sleep mode (low power consumption control mode) when not in use, thereby suppressing power consumption when not in use. . On the other hand, the control unit 21 is activated when receiving a wake-up signal from the LF receiving unit 22 and switches from the sleep mode to the normal control mode. However, switching from the sleep mode to the control mode from the normal control mode is permitted when the portable detection sensor 24 detects the portable state, and is prohibited when the portable state is not detected. Thereby, when the user does not intend to use, the control unit 21 is not activated due to the influence of the noise signal in the same frequency band as the activation signal of the LF, and the wasteful power consumption of the smart key 20 is suppressed. Has been.

  In the present embodiment, not only the control unit 21 but also the portable detection sensor 24 receives a detection start signal that is output when the LF reception unit 22 receives the activation signal, and detects a detection stop mode with low power consumption. The detection mode is switched from the normal detection mode to the normal detection mode (detection mode switching means: normal detection mode setting means). Since the mobile detection sensor 24 itself also consumes the power of the smart key 20, switching the detection mode in the mobile detection sensor 24 contributes to the effect of suppressing unnecessary power consumption in the smart key 20.

  Hereinafter, a control unit activation process performed by the LF reception unit 22 in order to switch the control mode set in the control unit 21 from the sleep mode to the normal control mode will be described with reference to the flowchart of FIG. The control unit activation process is performed in the LF reception unit 22, and the LF reception unit 22 functions as a control mode switching restriction unit, a detection mode switching restriction unit, and an activation signal determination unit of the present invention.

  In S <b> 1, it is determined whether or not the LF reception unit 22 has received a signal wirelessly transmitted as a radio wave in a predetermined LF band at the LF antenna 26. If there is no reception, the reception standby state is continued. If there is reception, the process proceeds to S2. In S2, signal input is confirmed in each of the LF receiving antennas 26x, 26y, and 26z having reception directivities in different three-axis directions. Then, in the subsequent S3, the signal having the maximum signal level is identified from the signals received by the LF receiving antennas 26x, 26y, and 26z. In S4, it is determined whether or not the signal level of the reception signal whose signal level is specified as the maximum exceeds a predetermined threshold level. If it does not exceed the threshold level, the process returns to S1. If it exceeds the threshold level, the process proceeds to S5, and the signal data of the specified received signal is read.

  In subsequent S6, it is determined whether or not the received signal is a normal activation signal. Since the signal data includes a code of about several bits (for example, 4 bits), whether or not the signal data read by the LF receiver 22 in S5 is a normal activation signal is determined by the above-mentioned several bits. The determination is made based on a predetermined code. If it is not a normal activation signal, the process returns to S1. If it is a normal activation signal, the process proceeds to S7.

  In S7, when not in use, the LF receiving unit 22 supplies the drive power from the battery 30 to the normal detection for the portable detection sensor 24 that is in the detection stop mode with low power consumption, like the control unit 21. Switch to mode (normal detection mode switching command means). Thereby, the portable detection sensor 24 switches to the normal detection mode. The mobile detection start signal (sensor ON signal) that gives the timing for switching the mobile detection sensor 24 to the normal detection mode may be directly supplied from the LF receiver 22 in the form of power supply as described above.

  In S8, if it is determined that the LF receiving unit 22 is in the portable state based on the detection result input from the portable detection sensor 24, the process proceeds to S9, and if it is not determined in the portable state, the control unit 21 is activated. Return to S1 without. If it determines with a carrying state, it will progress to S9 and will output a wakeup signal (start-up command signal) to the control part 21 (normal control mode switching command means). Thereby, this processing in the LF receiving unit 22 ends.

  On the other hand, the control unit 21 is activated (wakes up) by receiving the input of the wakeup signal. That is, the control mode of the control unit 21 is switched from the sleep mode (low power consumption control mode) to the normal control mode (control mode switching means: normal detection mode setting means). That is, the control unit 21 functions as a normal control mode setting unit. After switching, a control signal for causing the vehicle 10 to wirelessly transmit a response signal corresponding to the activation signal wirelessly received by the LF antenna 26 is output to the RF transmitter 23. That is, the control unit 21 functions as a transmission instruction unit for the RF transmission unit 23. The RF transmitter 23 receives this control signal and wirelessly transmits the response signal from the transmission antenna 27 as a radio wave in a predetermined RF band based on the control signal. Thereafter, when the predetermined end condition is satisfied, the control unit 21 switches from the normal control mode to the sleep mode (control mode switching means: low power consumption control mode setting means).

  The LF receiving unit 22 switches the detection mode of the portable detection sensor 24 from the normal detection mode to the detection stop mode after outputting a wakeup signal (start command signal) to the control unit 21 in S9 of FIG. 4 ( Detection stop mode switching command means). In the present embodiment, a portable detection stop signal (sensor OFF signal) is output to the portable detection sensor 24 as a wakeup signal (start command signal) is output in S9 of FIG. Thereby, the portable detection sensor 24 is switched to the detection stop mode in which the drive power supplied from the battery 30 is cut off and the detection drive is stopped (detection mode switching means: detection stop mode setting means).

  As mentioned above, although one Embodiment of this invention was described, these are only illustrations to the last, and this invention is not limited to these, A various change is possible unless it deviates from the meaning of a claim. is there.

  For example, the subject that switches the detection mode of the portable detection sensor 24 from the normal detection mode to the detection stop mode is not limited to the LF receiver 22 as in the above embodiment, and may be other than that. Further, the timing of switching from the normal detection mode to the detection stop mode is not limited to the timing at which the control unit 21 wakes up as in the above embodiment. Specifically, the portable detection sensor 24 is switched from the detection stop mode to the normal detection mode for detection of the portable state by the sensor 24 itself, the LF receiving unit 22, the control unit 21, or a timer provided elsewhere. When a predetermined time has elapsed after switching, the detection stop mode may be switched.

1 is a block diagram showing an embodiment of a smart entry system configured to have the wireless portable communication device of the present invention. The schematic diagram which shows the radio | wireless communication area of the smart entry system of FIG. 1 is a block diagram showing an embodiment of a wireless portable communication device of the present invention. The flowchart which shows an example of a control part starting process. The figure explaining the relationship between the LF signal which a wireless portable communication apparatus receives, and the noise of a general household appliance.

Explanation of symbols

1 Smart Entry System 10 Vehicle 20 Smart Key (Mobile Key: Wireless Portable Communication Device)
100 verification ECU
DESCRIPTION OF SYMBOLS 101 Memory | storage device 111 Outside vehicle transmitter 112 Vehicle interior transmitter 120 Receiver 130 Door lock locking / unlocking operation unit 200 Door lock ECU
210 Door lock drive unit 21 Control unit 22 LF reception unit (LF reception IC)
23 RF transmitter 25 Operation unit 26 LF antenna 30 Battery

Claims (7)

In a smart entry system mounted on a vehicle, a portable wireless communication device that wirelessly transmits an ID code stored in itself in response to a request by wireless communication from the vehicle for key verification,
An LF receiver that is constantly kept in operation to receive an activation signal wirelessly transmitted as a radio wave of a predetermined LF band from the vehicle;
As a control mode, a control unit having a normal control mode and a low power consumption control mode that consumes less power than the normal control mode, wherein the LF receiving unit is set in the low power consumption control mode. When the activation signal is received, control mode switching means for switching the control mode to the normal control mode, and after switching to the normal control mode, a response signal corresponding to the activation signal is sent to the RF transmitter A control unit having transmission instruction means for wirelessly transmitting to the vehicle as radio waves of a predetermined RF band from
Portable detection means for detecting that the portable wireless communication device is in a portable state by a user;
Control mode switching restriction that permits switching from the low power consumption control mode to the normal control mode by the control mode switching means when the carrying state is detected and prohibits when the carrying state is not detected. Means,
A portable wireless communication device comprising: An activation signal determining means for determining whether or not the activation signal received by the LF receiver is a regular signal;
The normal control mode setting limiting means determines that the activation signal received by the LF receiver is a normal signal when the control mode switching means switches from the low power consumption control mode to the normal control mode. In addition, it is permitted when the portable state is detected, and when it is determined that the activation signal received by the LF receiver is not a regular signal, regardless of whether the portable state is present or not. The portable wireless communication device according to claim 1, wherein the portable wireless communication device is prohibited. The mobile detection means has, as a detection mode, a normal detection mode for driving the mobile state so that the mobile state can be detected, and a detection stop mode in which the drive is stopped,
Detection mode switching means for switching the detection mode from the detection stop mode to the normal detection mode when the activation signal is received by the LF receiver in a state where the detection stop mode is set in the portable detection means. A portable wireless communication device according to claim 1 or 2, further comprising: Comprising the requirements of claim 2;
Switching from the detection stop mode to the normal detection mode by the detection mode switching means is permitted when the activation signal received by the LF receiver is determined to be a normal signal, and the normal signal The portable wireless communication device according to claim 3, further comprising detection mode switching limiting means for prohibiting when it is determined that it is not.   The detection mode switching means changes the detection mode of the portable detection means from the normal detection mode to the detection stop mode when the control mode of the control unit is switched from the low power consumption control mode to the normal control mode. The portable wireless communication device according to claim 3 or 4, wherein the portable wireless communication device is switched to the following.   The portable detection means is configured to include a vibration sensor that detects vibration of the portable wireless communication device main body, and when the vibration sensor detects vibration exceeding a predetermined threshold level, the portable state is defined as the portable state. The portable wireless communication device according to any one of claims 1 to 5, which is to be detected. The portable detection means includes an acceleration sensor that detects acceleration of the portable wireless communication device main body, and when the acceleration sensor detects acceleration exceeding a predetermined threshold level, the portable state is defined as the portable state. The portable wireless communication device according to any one of claims 1 to 5, which is to be detected.

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