JP2014010069A - Information specification system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve accuracy with which a portable terminal owned by a driver is specified by accurately recognizing a portable terminal brought in a vehicle.SOLUTION: In an information specification system constituted such that an information specification device 1 can communicate by radio with a portable terminal 2, the portable terminal 2 includes: a vehicle interior detection section 115 for detecting that the portable terminal 2 has been brought in the compartment of the vehicle from an output signal from an acceleration sensor 116; and a notification section 114 for transmitting a signal to notify the passenger of the vehicle that the portable terminal 2 has been brought in the compartment of the vehicle. The information specification device 1 includes: a calculation section 27 for calculating a deviation time between the time of a clock section 130 of the portable terminal 2 and the time of a clock giving time information to the device loaded on the vehicle; and an information specification section 23 for, when an interval between a correction time obtained by correcting the time information of the portable terminal with the deviation time and time information when a driver is seated in the driver's seat of the vehicle is equal to or less than a predetermined threshold and minimum, specifying the portable terminal 2 as the portable terminal of the driver.

Description

  The present invention relates to an information specifying system for specifying a mobile terminal owned by a driver among mobile terminals brought into a vehicle interior.

  Various techniques are known for determining the presence or absence of a mobile phone brought into the passenger compartment by using the two-way communication function of the mobile phone. Further, a technique for determining the presence / absence of a vehicle occupant by providing a sensor in a vehicle door or a seat in the vehicle interior is also well known.

  For example, Patent Document 1 discloses a driver detection sensor that detects a driver by image processing or fingerprint authentication, an occupant detection sensor that detects an occupant seated in a vehicle seat, and a mobile phone that is brought into the vehicle interior. A configuration including a mobile phone detection sensor that detects radio waves emitted from a telephone is disclosed. In addition, there is disclosed an information association apparatus configured to detect that a mobile phone is brought into a vehicle interior by signals transmitted from an occupant detection sensor and a mobile phone detection sensor.

JP2011-148425A

  However, in the device described in Patent Document 1 above, the mobile phone detection sensor does not detect the radio wave emitted from the mobile phone, but the mobile phone is detected in spite of being a mobile phone brought into the passenger compartment. There was a possibility not to be. Therefore, there is a possibility that the association is wrong when the number of mobile phones brought into the passenger compartment cannot be accurately recognized.

  The present invention has been made paying attention to the technical problem described above, and is configured to reliably transmit a communication signal from a portable terminal brought into the vehicle interior and accurately recognize the mobile terminal in the vehicle interior. It is intended to provide an information identification system.

  In order to achieve this object, the invention according to claim 1 is configured such that a mobile terminal provided with an acceleration sensor and an information specifying device are capable of wireless communication, and is transmitted from the mobile terminal brought into the vehicle cabin. In the information specifying system configured to specify the driver's mobile terminal based on the communication information being detected by the information specifying device, the mobile terminal is configured to detect the vehicle based on the signal output from the acceleration sensor. A detecting means for detecting that the portable terminal is brought into the vehicle interior, and a first notification signal for notifying that the portable terminal has been brought into the vehicle interior is transmitted. First information means, and the information specifying device calculates a time difference between a time of a clock provided in the portable terminal and a time of a clock that gives time information to a device mounted on the vehicle. First calculation means, corrected time information obtained by correcting time information in the portable terminal included in the first notification signal with the shift time, and a signal output from a pressure sensor provided in a driver seat of the vehicle And a first identification unit that identifies the portable terminal that has transmitted the first notification signal as the portable terminal of the driver when the interval with respect to the time information is within a predetermined threshold and is minimum. It is an information identification system.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect, the information specifying device includes an association information storage unit that stores information on a deviation time calculated by the first calculation unit, and the first notification signal. A second calculating unit that corrects the time information included in the first notification signal using the deviation time stored in the association information storage unit to calculate a corrected time. And the first calculation means is configured to calculate a time difference between the time information in the mobile terminal specified as the driver's mobile terminal and the time information in the vehicle. System.

  According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, when the portable terminal detects the first notification signal transmitted from another portable terminal, the portable terminal is already in the passenger compartment. Second information means for transmitting a second notification signal for notification is further provided, and the information specifying device calculates an estimated time by estimating the time information in the portable terminal based on the deviation time and the time information in the vehicle. When the third calculation means detects the second notification signal, and the deviation between the time information in the mobile terminal included in the second notification signal and the estimated time is within a predetermined threshold and is minimum The information specifying system further comprises: a second specifying unit that specifies the portable terminal that has transmitted the second notification signal as a driver's portable terminal.

  According to a fourth aspect of the present invention, in addition to the configuration of the third aspect, when the first specifying means detects the first notification signal and does not detect the second notification signal, the portable terminal of the driver It is the information identification system characterized by being comprised so that it may identify.

  According to a fifth aspect of the invention, in addition to the configuration of the third or fourth aspect, the information specifying device transmits a third notification signal notifying that the driver's mobile terminal has been specified by the first specifying means. A third notification means, and the portable terminal includes a communication history information storage means for storing history information of wireless communication, and the third notification signal when the third notification signal is detected. And a fourth notification means for transmitting a fourth notification signal for notifying that the third notification signal has been confirmed when the identification information of the portable terminal matches the identification information of the own device. Transmits the second notification signal when the first notification signal is detected and the transmission history information of the fourth notification signal is stored in the communication history information storage unit, and the first calculation unit Is detected when the fourth notification signal is detected. 4 and the time information in the mobile terminal contained in the notification signal is information specific system characterized by being configured to calculate the deviation time based on the time information in the vehicle.

  According to the first aspect of the present invention, it can be determined based on the output signal of the acceleration sensor that the portable terminal has been brought into the passenger compartment. The information specifying device can detect the mobile terminal brought into the vehicle interior by detecting the first notification signal transmitted from the mobile terminal. In addition, even when the time on the mobile terminal side and the time on the vehicle side are different, the time for the deviation can be corrected, so time information and driving at the timing when the mobile terminal is actually brought into the vehicle interior The mobile terminal of the driver can be specified based on the time information when the driver is seated on the seat. For example, even if transmission time information that is time information on the mobile terminal side that is shifted from the time information on the vehicle side is used, the transmission time information is corrected by the shift time, and therefore based on the interval with the seated time information. Thus, the mobile terminal of the driver can be specified. Furthermore, by using the time information of the portable terminal and using the correction time, it is possible to accurately detect the interval between the timing of bringing in the passenger compartment and the timing of sitting.

  According to the invention of claim 2, the time information of the mobile terminal in the first notification signal is corrected by the time difference between the time information in the mobile terminal specified as the driver's mobile terminal and the time information on the vehicle side. Therefore, the driver's mobile terminal can be specified by weighting. For example, when the first notification signal is transmitted from the portable terminal specified as the portable terminal of the previous driver, the accurate time information and the sitting time information in the portable terminal are corrected by the shift time. Therefore, the weighting process in the specific process for the driver terminal can be performed.

  According to the invention of claim 3, even when there are a plurality of portable terminals in the vehicle compartment, the portable terminal owned by the driver can be specified from among the portable terminals that have transmitted the second notification signal. Further, the estimated time, that is, the time information in the mobile terminal can be estimated from the deviation time and the vehicle time information. Therefore, by comparing the time information actually transmitted from the mobile terminal with the estimated time, it is possible to determine whether or not the mobile terminal that transmitted the second notification signal is the driver's mobile terminal. Become. Thereby, even if it is a case where a some 2nd notification signal is received, a driver | operator's portable terminal can be specified now using the 2nd notification signal. Further, even if the time information on the mobile terminal side and the time information on the vehicle side are different, the driver's time information is based on the deviation between the estimated time and the time information on the mobile terminal side included in the second notification signal. A mobile terminal can be specified.

  According to the invention of claim 4, when only the first notification signal is detected, the driver terminal specifying process is performed by the first specifying means, and when the second notification signal is detected, the second specifying means is used. It is configured such that the driver terminal identification process is performed.

  According to the invention of claim 5, since the second notification signal is transmitted based on the transmission history of the fourth notification signal stored in the storage means of the portable terminal specified as the portable terminal of the driver, The notification signal can be surely transmitted from the portable terminal specified as the portable terminal of the driver. That is, the information specifying device can surely detect the notification signal from the mobile terminal specified by the first specifying means. In addition, since the portable terminal other than the portable terminal that should originally transmit the second notification signal does not transmit the second notification signal, even if a plurality of portable terminals are brought into the vehicle compartment, The terminal can be specified. In addition, since it is only necessary to acquire time information from a mobile terminal specified as a driver's mobile terminal, the processing load on the information specifying device can be reduced.

It is the figure which showed typically the functional block which comprises the information specific system which concerns on one Embodiment of this invention. It is the flowchart which showed the example of the information processing implemented by the portable terminal and the information specific device which were brought into the vehicle interior. It is the flowchart which showed the other information processing example implemented by the portable terminal and information specific device. It is the flowchart which showed the example of the information processing implemented by the portable terminal and information specific device in another specific example.

  Next, the present invention will be described based on specific examples. The information identification system according to the present invention is configured to identify a driver's portable terminal by the information identifying device detecting a signal transmitted from the portable terminal brought into the passenger compartment. Specifically, even when a plurality of mobile terminals are brought into the vehicle interior, such as when a mobile terminal is already in the vehicle interior and another mobile terminal is brought into the vehicle interior, The mobile terminal in the room transmits a communication signal indicating that the mobile terminal is already in the vehicle interior by detecting a communication signal transmitted by another mobile terminal brought into the vehicle interior, and the information identifying device detects the communication signal. Thus, the mobile terminal of the driver is specified. For this reason, in particular, even when a plurality of mobile terminals are already in the vehicle interior, the mobile terminal of the driver can be accurately identified.

  Hereinafter, an information specifying system according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing functional blocks provided in each of the information specifying device 1 and the mobile terminal 2 included in the information specifying system of this embodiment. In this information identification system, the information identification device 1 and the portable terminal 2 are configured to be capable of wireless communication, and the information identification device 1 is configured to receive a signal from a sensor 3 mounted on the vehicle. The information specifying device 1 may be a device mounted on the vehicle or a device installed outside the vehicle. Moreover, the portable terminal 2 illustrated in FIG. 1 is a portable terminal brought into the vehicle. In the figure, only one portable terminal 2 is illustrated, but the information specifying system in this embodiment is implemented even when a plurality of portable terminals 2 (not shown) are brought into the passenger compartment. Is possible.

  The information specifying device 1 includes an arithmetic processing device, controls a storage device that stores a computer program executed by the arithmetic processing device and various data, and an external storage device, and performs information processing by the computer program executed by the arithmetic processing device. Is configured to run. Therefore, the information specifying device 1 is configured by functional blocks as illustrated in FIG. 1 and includes a communication unit 10, a control unit 20, a storage unit 30, and a clock unit 40.

  The storage unit 30 includes a communication history information storage unit 31 and an association information storage unit 32. The communication history information storage unit 31 is a storage unit that stores communication history information including history information wirelessly communicated via the communication unit 10. Further, information related to signals input from the sensor 3 is also stored in the communication history information storage unit 31. The information stored in the communication history information storage unit 31 includes transmission history information, reception history information, time information, and types of communication signals transmitted and received.

  The association information storage unit 32 is a storage unit that stores association information including information related to the mobile terminal 2 specified as the driver's mobile terminal. The association information includes the identification information of the mobile terminal 2 specified as the driver's mobile terminal, the time information when specified as the driver's mobile terminal, and the time difference between the time of the information specifying device 1. Information. The association information may include a driver flag that can identify the current driver. For example, information on the portable terminal 2 is stored as driver information having a driver flag in the current driver item in the data structure of the association information storage unit 32.

  The communication unit 10 is means for receiving and transmitting information when performing wireless communication with the mobile terminal 2. That is, the communication unit 10 includes a radio communication antenna as a transmission / reception unit and a control unit that controls the radio communication. Therefore, the information specifying device 1 is configured to detect a communication signal transmitted from the portable terminal 2 via the communication unit 10 and to transmit a communication signal generated by the signal generation unit 24 described later.

  The control unit 20 includes a signal acquisition unit 21, a signal determination unit 22, an information specification unit 23, a signal generation unit 24, a notification unit 25, a detection unit 26, and a calculation unit 27. The signal acquisition unit 21 is means for acquiring a communication signal transmitted from the mobile terminal 2 via the communication unit 10. Specifically, the signal acquisition unit 21 receives a communication signal transmitted from the mobile terminal 2 and notifies that the mobile terminal 2 has been brought into the vehicle interior, and a carry-in notification signal for notifying that the mobile terminal 2 has already been brought into the vehicle interior. And a confirmation notification signal for notifying that the driver has been identified as the portable terminal. Information on the communication signal acquired by the signal acquisition unit 21 is stored in the communication history information storage unit 31 and is output from the signal acquisition unit 21 to the signal determination unit 22.

  The signal discriminating unit 22 is means for carrying out discriminating processing for communication signals. Specifically, the signal determination unit 22 is configured to determine whether or not a communication signal transmitted from the mobile terminal 2 has been detected, and to determine the type of the communication signal. Moreover, the signal discrimination | determination part 22 is comprised so that it may discriminate | determine whether the acquired communication signal is plurality. For example, it is possible to determine whether a plurality of communication signals of the same type have been acquired or a plurality of communication signals of different types have been acquired. The information discriminated by the signal discriminating unit 22 is output to the information specifying unit 23 or the calculating unit 27.

  The information specifying unit 23 is a unit that specifies the driver's portable terminal based on the information related to the acquired communication signal, the information on the determination result by the signal determining unit 22, and the information stored in the storage unit 30. For example, when the acquired communication signal is only the carry-in notification signal, the information specifying unit 23 is configured to specify the driver's mobile terminal from among the mobile terminals 2 that have transmitted the carry-in notification signal. In this case, the information specifying unit 23 includes time information related to a signal input from the sensor 3 such as a signal input from a pressure sensor provided in the driver's seat and a signal input from an opening / closing sensor that detects opening / closing of the vehicle door. The mobile terminal of the driver is specified based on the interval with the time information regarding the carry-in notification signal. Specifically, based on the interval, an interval that is within a predetermined threshold and that is minimum is specified, and the mobile terminal that has transmitted the carry-in notification signal corresponding to the interval is specified as the driver's mobile terminal. ing. That is, the information specifying unit 23 is configured to function as a determination unit. In addition, information related to the mobile terminal 2 specified as the driver's mobile terminal by the information specifying unit 23 is stored in the association information storage unit 32. The information on the current driver may be stored so that the driver flag can be raised and identified.

  If the acquired communication signal includes a carry-in notification signal and a priority signal, the information specifying unit 23 prioritizes the priority signal over the carry-in notification signal and transmits the priority signal. Is identified as the portable terminal of the driver. In particular, when a plurality of priority signals are acquired, it is determined whether or not the information included in the priority signals is within the estimated time information range. Note that when the driver's mobile terminal is specified based on the priority signal and when no other mobile terminal is specified as the driver's mobile terminal, the driver flag stored in the association information storage unit 32 is maintained. The That is, the association state for the information of the mobile terminal specified as the driver's mobile terminal in the previous specifying process is maintained. Furthermore, the information specifying unit 23 is configured to specify the driver's portable terminal with reference to the association information stored in the association information storage unit 32 when the driver's portable terminal is specified. Information based on the identification of the driver's portable terminal by the information identification unit 23 is input to the signal generation unit 24.

  The signal generator 24 is means for generating a communication signal transmitted from the information specifying device 1. For example, as a communication signal generated by the signal generation unit 24, there is a specific notification signal for notifying the driver of the mobile terminal. In this embodiment, there are two types of specific notification signals. When the specific notification signal is generated when the driver's mobile terminal is specified based on the carry-in notification signal, the specific notification signal includes the driver's mobile terminal. The identification information of the portable terminal 2 included in the carry-in notification signal specified as the signal transmitted from the mobile phone 2 is included. On the other hand, in the case of the specific notification signal generated when the driver's mobile terminal is specified based on the priority signal, the mobile terminal 2 included in the priority signal is similar to the carry-in notification signal described above. Identification information is included. Then, information related to the communication signal generated by the signal generation unit 24 is output to the notification unit 25.

  The notification unit 25 is a means for notifying the mobile terminal 2 that the driver's mobile terminal has been identified. For example, the notification unit 25 transmits the specific notification signal generated by the signal generation unit 24 via the communication unit 10. Further, transmission history information indicating that the specific notification signal has been transmitted is stored in the communication history information storage unit 31. Note that the notification unit 25 may be a means for notifying the vehicle passenger of information indicating that the driver's mobile terminal has been identified. For example, the notification unit 25 outputs information to that effect to an in-vehicle notification unit such as a speaker or an image display unit (not shown), and the in-vehicle notification unit notifies the passenger in the vehicle to that effect.

  The calculation unit 27 is means for performing a calculation process for time information. For example, the time difference between the time information of the clock unit 130 of the mobile terminal 2 specified as the driver's mobile terminal and the time information of the clock on the vehicle side is calculated. If the information specifying device 1 is an in-vehicle device, the information specifying device 1 is configured to calculate a difference between the time of the clock unit 40 of the information specifying device 1 and the time of the clock unit 130. The calculation unit 27 may be configured to calculate an interval between the time information related to the carry-in notification signal and the seating time related to the seating signal input from the sensor 3. The time difference information calculated by the calculation unit 27 is stored in the association information storage unit 32. Further, an instruction signal indicating that the interval between the time information related to the carry-in notification signal and the sitting time is calculated by the calculation unit 27 is input to the information specifying unit 23.

  The clock unit 40 is means for giving time information to a device mounted on the vehicle. This time information is used for a transmission time and a reception time of a communication signal, a detection time when the sensor 3 detects various physical quantities, a time when the detection unit 26 detects a signal input from the sensor 3, and the like.

  The mobile terminal 2 is a device that can be carried by a user, such as a mobile phone, a smartphone, a tablet computer, or a PDA (Personal Digital Assistant), and is a communication terminal that can wirelessly communicate with other devices. Specifically, the portable terminal 2 includes an arithmetic processing device and a storage device, and the arithmetic processing device is configured to control the storage device and perform information processing by a computer program. Therefore, the mobile terminal 2 includes functional blocks as illustrated in FIG. 1, and includes a communication unit 100, a control unit 110, a storage unit 120, and a clock unit 130.

  The storage unit 120 includes a communication history information storage unit 121 and an association information storage unit 122. The communication history information storage unit 121 is a storage unit that stores information on the history of wireless communication of the mobile terminal 2 with other devices, that is, communication history information. For example, the reception history information of the carry-in notification signal and the reception history information of the specific notification signal are stored in the communication history information storage unit 121 as the history information of detecting the communication signal transmitted by the mobile terminal 2 or the information specifying device 1. The The communication history information storage unit 121 stores the transmission history information of the carry-in notification signal, the transmission history information of the priority signal, and the transmission history information of the confirmation notification signal according to the specific notification signal. Note that the time information of the clock unit 130 is used as the transmission time and the reception time stored in the communication history information storage unit 121.

  The association information storage unit 122 is a storage unit that stores history information associated as a portable terminal of the driver. For example, as the association information stored in the association information storage unit 122, the specific time information that is the time of the clock unit 130 when specified as the driver's portable terminal, the transmission history information of the confirmation notification signal, and the confirmation notification There are reception history information of a specific notification signal and transmission history information of a carry-in notification signal used in the process of transmitting a signal. The transmission history information and the reception history information may be a flag with transmission or a flag with reception. These flags are associated with the data of the transmission / reception history stored in the communication history information storage unit 121. It may be.

  The communication unit 100 is means for receiving and transmitting information when performing wireless communication. Specifically, the communication unit 100 includes an antenna for wireless communication and means for controlling the wireless communication. That is, the communication unit 100 may have the same configuration as the communication unit 10 of the information specifying device 1 described above.

  The control unit 110 includes a signal acquisition unit 111, a determination unit 112, a signal generation unit 113, a notification unit 114, a vehicle interior detection unit 115, and an acceleration sensor 116. The acceleration sensor 116 is a sensor capable of detecting movement, position change, acceleration, and the like. Specifically, it is configured to be able to detect that an external force has been applied, and is configured to be able to perform acceleration detection, tilt detection, vibration detection, motion detection, impact detection, drop detection, and the like. For example, the mobile terminal 2 is configured to detect acceleration caused by a change in the vertical position of the mobile terminal 2 and detect the movement of the mobile terminal 2. Moreover, it is comprised so that an output signal may be output by detecting acceleration. The acceleration sensor 116 only needs to be small and lightweight that can be mounted on the mobile terminal 2. Furthermore, sensing methods such as electrostatic type and piezoelectric type, manufacturing technology such as whether or not to adopt MEMS (Micro Electro Mechanical Systems) technology, sensing such as uniaxial or multi-axial direction, acceleration magnitude and frequency bandwidth, etc. The amount is not particularly limited.

  The vehicle interior detection unit 115 is means for detecting that the mobile terminal 2 has been brought into the vehicle interior. Specifically, the vehicle interior detection unit 115 is configured to receive a signal output from the acceleration sensor 116 that has detected vertical acceleration, and based on the output signal from the acceleration sensor 116, the mobile terminal 2. Is configured to be detected as being brought into the passenger compartment. Information indicating that the vehicle compartment detection unit 115 has detected that the vehicle has been brought into the vehicle compartment is output to the signal generation unit 113.

  The signal acquisition unit 111 is means for acquiring a communication signal by wireless communication via the communication unit 100. For example, the communication signal acquired by the signal acquisition unit 111 includes a carry-in notification signal transmitted from another mobile terminal 2 and a specific notification signal transmitted from the information specifying device 1. Information regarding the communication signal acquired by the signal acquisition unit 11 is stored in the communication history information storage unit 121 and is output from the signal acquisition unit 111 to the determination unit 112.

  The determination unit 112 is means for performing various determination processes based on the communication signal. Specifically, the determination unit 112 is configured to determine whether or not a communication signal transmitted from the information specifying device 1 or another portable terminal 2 has been detected, and to determine the type of the communication signal. The determination unit 112 is configured to determine whether the communication signal is a communication signal related to the own device based on the identification information of the mobile terminal 2 included in the acquired communication signal. Yes. For example, it is configured to determine whether or not the identification information of the mobile terminal 2 included in the specific notification signal matches the identification information of the own device.

  Furthermore, the determination unit 112 refers to the storage unit 120 based on the acquired communication signal, and determines whether or not information related to the communication signal is stored. For example, when the carry-in notification signal is acquired, the association information storage unit 122 is referred to and it is determined whether or not the user has priority based on the transmission history information of the confirmation notification signal. The determination process for determining whether or not the user has the priority is a confirmation notification to be transmitted when it is determined that the mobile terminal 2 specified as the driver's mobile terminal by the information specifying apparatus 1 in the previous specific process is the own apparatus. The presence / absence of a signal transmission history is determined, or it is determined whether or not a carry-in notification signal transmitted from another portable terminal 2 is detected in a state where the carry-in notification signal is not transmitted in this specific process. Further, in this case, the communication history information storage unit 121 is referred to determine whether or not there is a transmission history of the confirmation notification signal. If there is the transmission history, the transmission time of the confirmation notification signal and the carry-in notification signal It may be configured to determine whether or not the reception time is within a predetermined time.

  The signal generation unit 113 is a unit that generates a communication signal transmitted by the mobile terminal 2 through wireless communication based on the result processed by the determination unit 112 or the vehicle interior detection unit 115. For example, the communication signal generated by the signal generation unit 113 is generated when the carry-in notification signal generated based on the information input from the vehicle interior detection unit 115 and the carry-in notification signal are acquired and have priority. There are a priority signal and a confirmation notification signal that is generated when the specific notification signal is acquired and corresponds to the own device. The carry-in notification signal includes identification information of the mobile terminal 2 and time information when it is detected that the mobile terminal 2 has been brought into the vehicle interior. The priority signal includes the identification information of the mobile terminal 2 and the last specific time information that is time information in the mobile terminal 2. The confirmation notification signal includes identification information of the mobile terminal 2 and current specific time information that is time information in the mobile terminal 2. Note that the information included in the confirmation notification signal may be changed according to the type of the acquired specific notification signal. For example, the confirmation notification signal generated in response to the specific notification signal for the carry-in notification signal includes current specific time information. On the other hand, the specific time information may not be included in the confirmation notification signal generated according to the specific notification signal regarding the priority signal. In addition, information related to the communication signal generated by the signal generation unit 113 is output to the notification unit 114.

  The notification unit 114 is a means for notifying other devices that it has been brought into the passenger compartment, already in the passenger compartment, or confirmed to be specified. For example, the notification unit 114 transmits a carry-in notification signal, a priority signal, and a confirmation notification signal generated by the signal generation unit 113 via the communication unit 100. In addition, transmission history information regarding the communication signal transmitted by the notification unit 114 is stored in the communication history information storage unit 121. Note that the notification unit 114 may be a means for notifying the owner of the mobile terminal 2 of information indicating that the own device is specified as the mobile terminal of the driver. For example, information to that effect is output by the notification unit 114 to an output unit in the portable terminal 2 such as a speaker or an image display unit (not shown), and the information to that effect is notified to the owner.

  The sensor 3 is a sensor mounted on the vehicle, and is configured to output a signal to the information specifying device 1. The sensor 3 includes a pressure sensor that is provided in the driver's seat of the vehicle and detects that the driver is seated in the driver's seat, and an open / close sensor that detects opening and closing of the vehicle door. For example, the time of the clock unit 40 may be used as the time information when the pressure sensor detects a pressure change, and the seating time when sitting in the driver's seat may be acquired. In this case, the signal output from the pressure sensor includes the seating time information. Similarly, for the open / close sensor, a signal including the open / close time information of the vehicle door can be output using the time information of the clock unit 40.

  Next, with reference to FIG. 2, a driver terminal specifying process performed by the information specifying system in this embodiment will be described. FIG. 2 shows a processing flow for identifying the mobile terminal 2 owned by the driver from the mobile terminal 2 brought into the vehicle interior. First, the mobile terminal 2 provided with the acceleration sensor 116 determines whether or not it has been brought into the vehicle interior by detecting the displacement of the vertical position (step S1). For example, when the acceleration sensor 116 detects a change in the vertical position of the mobile terminal 20 or detects the vertical movement or acceleration of the mobile terminal 2, the mobile terminal 2 is placed in the vehicle interior, or the mobile terminal 2. It is configured so that it can be determined that the passenger who possesses the seated in the seat.

  Specifically, when the portable terminal 2 is placed in the passenger compartment or a passenger carrying the portable terminal 2 sits on the seat, the vertical position of the portable terminal 2 changes from a state where the portable terminal 2 changes downward. Transition to a state where changes converge. As described above, when the mobile terminal 2 transitions from the dynamic state to the static state, the displacement of the vertical position of the mobile terminal 2 per unit time, that is, the speed in the vertical direction changes greatly in the process in which the change in the vertical position stops. To do. Therefore, the vertical acceleration changes greatly in a very short time. Therefore, the vehicle interior detection unit 115 to which the output signal from the acceleration sensor 116 is input determines whether or not the acceleration at the time when the vertical speed of the mobile terminal 2 changes greatly beyond a predetermined value is detected. It is configured. In addition, the up-down direction in this description is a direction parallel to the gravity direction. The vehicle interior detection unit 115 outputs an instruction signal based on the fact that the portable terminal 2 is brought into the vehicle interior to the signal generation unit 113 according to the determination result based on the output signal from the acceleration sensor 116.

  When the instruction signal is input from the vehicle interior detection unit 115, the signal generation unit 113 generates a carry-in notification signal that is a communication signal for notifying that the vehicle has been brought into the vehicle interior. And the notification part 114 transmits the carry-in notification signal via the communication part 100 (step S2). The carry-in notification signal includes at least identification information of the mobile terminal 2. Further, transmission history information indicating that a carry-in notification signal is transmitted from the communication unit 100 is stored in the communication history information storage unit 121. The transmission history information includes information that can identify the type of communication signal, that is, a carry-in notification signal, and transmission time information. For example, the notification unit 114 is configured to output an instruction signal to the communication unit 100 so as to transmit a carry-in notification signal, and to input transmission history information of the carry-in notification signal into the communication history information storage unit 121. Also good. The carry-in notification signal may include time information. For example, the carry-in notification signal includes time information detected by the acceleration sensor 116 as being brought into the vehicle interior or time information when the carry-in notification signal is transmitted. Also good.

  The information specifying device 1 configured to be capable of wireless communication with the mobile terminal 2 detects a carry-in notification signal among communication signals transmitted from the mobile terminal 2 (step S3). For example, when an acceptance start condition for a carry-in notification signal such as opening and closing of a vehicle door is satisfied, the signal acquisition unit 21 starts accepting a carry-in notification signal via the communication unit 10. In this case, the notification signal received by the information specifying device 1 is the time when the time information in the clock unit 40 is received, and it is determined whether or not the type of the signal is a carry-in notification signal. If judged, it is associated with the reception time information and stored in the communication history information storage unit 31. When the carry-in notification signal includes time information such as the time when the acceleration sensor 116 detects the acceleration or the transmission time when the signal is transmitted from the mobile terminal 2, this time information is also included with the carry-in notification signal. It is stored in the communication history information storage unit 31. That is, the time information stored in the communication history information storage unit 31 in association with the carry-in notification signal is detection time information in the carry-in notification signal.

  In addition, when the pressure signal output from the pressure sensor provided in the driver's seat is input, the detection unit 26 of the information specifying device 1 determines that the driver is sitting in the driver's seat and associates the pressure signal with the time information. It memorize | stores in the communication history information storage part 31 (step S4). The time information regarding the pressure signal is the seating time. The seating time may be time information when the pressure sensor detects pressure, or may be time information when the detection unit 26 detects a pressure signal. That is, the seating time information is included in the detection time information in the pressure signal. Further, the information specifying device 1 determines whether or not an acceptance end condition for the carry-in notification signal such as an elapsed time since the start of the acceptance of the carry-in notification signal is satisfied, and the carry-in notification is performed until the end condition is satisfied. It may be configured to determine whether or not both the signal and the pressure signal are detected. Further, the calculation unit 27 calculates a detection interval that is an interval between the time information related to the carry-in notification signal received in step S3 and the seating time detected in step S4.

  Furthermore, the information specifying unit 23 specifies the portable terminal 2 owned by the driver based on the interval between the detection time information in the carry-in notification signal and the detection time information in the pressure signal, that is, the detection interval (step S5). Specifically, when it is determined that the calculated detection interval is smaller than a predetermined threshold for the detection interval, the mobile terminal 2 owned by the driver who has transmitted the carry-in notification signal that becomes the minimum detection interval. It is configured to be identified as a terminal. For example, when there is only one carry-in notification signal received, the carry-in notification signal is determined by whether the interval between the detection time information in the carry-in notification signal and the detection time information in the pressure signal is within a predetermined threshold. It is configured to determine whether or not it is a carry-in notification signal transmitted from the mobile terminal. If it is determined that the detection interval is within the threshold, the mobile terminal that has transmitted the carry-in notification signal is specified as the mobile terminal owned by the driver. In addition, when there are a plurality of carry-in notification signals received, the mobile phone that has transmitted the carry-in notification signal in which the interval between the detection time in the carry-in notification signal and the detection time (sitting time) of the pressure signal is within a predetermined threshold and becomes the minimum Identify the terminal as a mobile terminal owned by the driver. Furthermore, referring to history information identified as a driver's portable terminal in the past, a process of performing a predetermined weighting process according to the presence / absence of history information related to the carry-in notification signal to identify the driver's portable terminal May be configured to implement. In short, based on the information stored in the association information storage unit 32, the presence / absence of identification as a driver terminal in the past and the relative difference in the carry-in notification signal weighted according to the number of times are given. That's fine. As described above, information on the carry-in notification signal identified as a signal transmitted from the driver's portable terminal is stored in the association information storage unit 32 as information on the driver terminal.

  And if the information specific | specification part 23 specifies the portable terminal which a driver | operator owns, the instruction | indication signal for producing | generating the specific notification signal which is a notification signal that the driver | operator's portable terminal was specified to the signal generation part 24 will be shown. Output. Based on the instruction signal, the signal generation unit 24 generates a specific notification signal and outputs an instruction signal for transmitting the specific notification signal to the notification unit 25. Based on the instruction signal, the notification unit 25 transmits the specific notification signal via the communication unit 10 (step S6). In addition, the transmission history information that has transmitted the specific notification signal is stored in the communication history information storage unit 31. The outgoing call history information includes identification information of the mobile terminal and outgoing time information that is the time in the clock unit 40.

  When the information specifying device 1 transmits a specific notification signal, the portable terminal 2 in the vehicle compartment detects the specific notification signal (step S7). Specifically, in the mobile terminal 2, the signal acquisition unit 111 acquires the specific notification signal via the communication unit 100, and the communication history information is obtained by associating the reception time information that is the time in the clock unit 130 with the specific notification signal. Store in the storage unit 121. In addition, the determination unit 112 determines whether or not the identification information of the mobile terminal included in the specific notification signal matches the identification information of the own device. If the identification information of the mobile terminal matches as a result of the determination, it is determined that the own device has been specified as the driver's mobile terminal (step S8).

  Furthermore, when the identification information of the portable terminal described above matches, the signal generation unit 113 generates a confirmation notification signal notifying that the identification information of the portable terminal included in the specific notification information matches, and the notification unit 114 The confirmation notification signal is transmitted via the communication unit 100 (step S9). The confirmation notification signal includes identification information of the mobile terminal 2 and specific time information that is time information in the mobile terminal 2. The specific time information is time information in the clock unit 130 of the mobile terminal 2, and is transmission time information when a confirmation notification signal is transmitted in the above-described example. Further, the specific time information is included in the transmission history information of the confirmation notification signal and stored in the communication history information storage unit 121.

  When the portable terminal 2 transmits a confirmation notification signal, the information specifying device 1 detects the confirmation notification signal (step S10). When the information specifying device 1 receives the confirmation notification signal, the information specifying device 1 calculates a time difference, that is, a difference between the time of the clock unit 130 of the portable terminal 2 that has transmitted the confirmation notification signal and the time of the clock unit 40 of the information specifying device 1. Then, the calculated shift time and the current time in the information specifying device 1 are stored in association with each other (step S11). Specifically, the calculation unit 27 is included in the confirmation notification signal by using the time information of the clock unit 40 of the information specifying device 1 when the confirmation notification signal is received as the current time and the specific time information in the information specifying device 1. The difference between the specific time information in the portable terminal 2 and the specific time information in the information specifying device 1, that is, a deviation time is calculated. The difference (deviation time) and the specific time information in the information specifying device 1 are associated and stored in the communication history information storage unit 31 or the association information storage unit 32.

  Next, with reference to FIG. 3, a description will be given of a driver terminal specifying process performed by the information specifying system when the mobile terminal is already in the vehicle compartment separately from the mobile phone brought into the vehicle interior. FIG. 3 shows a processing flow for identifying the driver's portable terminal based on the communication signal transmitted from the portable terminal 2 already in the vehicle interior. In the example described here, there are a plurality of portable terminals 2 in the passenger compartment, and at least one portable terminal brought into the passenger compartment and one portable terminal already in the passenger compartment are included. Therefore, the mobile terminal 2 illustrated in FIG. 3 is a mobile terminal already in the vehicle interior. In addition, about the structure similar to the structure mentioned above with reference to FIG. 2, description here is abbreviate | omitted. First, the portable terminal 2 brought into the vehicle interior performs the processing in steps S1 and S2 described above and transmits a carry-in notification signal. The mobile terminal 2 already in the passenger compartment detects a carry-in notification signal transmitted by another mobile terminal 2 (step S21). Specifically, the signal acquisition unit 111 acquires a communication signal via the communication unit 100, and the determination unit 112 determines whether or not the acquired communication signal is a carry-in notification signal.

  The mobile terminal 2 that has received the carry-in notification signal determines whether or not the mobile terminal 2 has priority because it is already in the passenger compartment. A right signal is transmitted (step S22). For example, when a mobile terminal (first mobile terminal) that has received a carry-in notification signal detects a carry-in notification signal transmitted from another mobile terminal (second mobile terminal), the mobile terminal (first mobile terminal) stores the signal in the communication history information storage unit 121. With reference to the transmitted call history information, it is determined whether or not the own device has already transmitted the brought-in communication signal. That is, in the current specific process including the carry-in signal of the second portable terminal, it is configured to determine whether or not the first portable terminal transmits a carry-in notification signal.

  The mobile terminal 2 is configured to transmit a carry-in notification signal based on the output signal of the acceleration sensor 116. Therefore, when the first portable terminal is brought into the vehicle compartment before the second portable terminal, the first portable terminal in a stationary state is a timing at which the second portable terminal transmits a carry-in notification signal. There is a case where the carry-in notification signal is not transmitted at a timing close to. Therefore, the mobile terminal 2 determines whether or not the history information that transmitted the carry-in notification signal within a predetermined time from the time when the carry-in notification signal was detected in the other mobile terminal 2 is stored. It is configured to determine that the vehicle is in the vehicle compartment before the terminal 2.

  Further, when the mobile terminal 2 determines that the mobile terminal 2 is in the cabin ahead of the other mobile terminals 2 because there is no transmission history of the carry-in notification signal within the predetermined time, a confirmation notification is sent to the communication history information storage unit 121. It is determined whether or not signal transmission history information is stored. That is, it is configured to determine whether or not the driver is specified as the portable terminal in the previous specifying process. If the transmission history information of the confirmation notification signal is stored, it is determined whether or not the interval between the transmission time and the reception time of the carry-in notification signal is within a predetermined time. If the reception time of the carry-in notification signal and the transmission time of the confirmation notification signal are within a predetermined time, the portable terminal 2 that has transmitted the confirmation notification signal transmits to the other portable terminal 2 that has transmitted the carry-in notification signal. The mobile terminal 2 determines that the mobile terminal 2 has priority, generates a priority signal notifying that the mobile terminal 2 is already in the passenger compartment and specified as the mobile terminal of the previous driver, and transmits the priority signal. To do. The priority signal includes the identification information of the portable terminal 2 and the specific time information when it is specified last time. Further, the transmission history information of the priority signal is stored in the communication history information storage unit 121. The previous time may include the previous time.

  Further, the information specifying device 1 detects the priority signal transmitted from the mobile terminal 2 (step S23). The time of the clock unit 40 when the priority signal is received is stored in the communication history information storage unit 31 as the reception time together with information included in the priority signal. In addition, when the information specifying device 1 receives the priority signal, the specific time information in the information specifying device 1 stored in the association information storage unit 32 when it is specified last time and the mobile terminal 2 specified at that time The estimated time information obtained by estimating the specific time information in the portable terminal 2 is calculated on the basis of the difference time (difference) from (step S24). The processing in step S24 is performed by the calculation unit 27, and the specific time information in the mobile terminal 2 specified last time by adding the above-described deviation time to the specific time information in the information specifying device 1, that is, the mobile terminal 2 The estimated time information for estimating the specific time information stored in the association information storage unit 122 is calculated. Note that the present invention is not limited to the processing example in which the correction time is calculated by adding the deviation time to the vehicle-side time, and the correction time may be calculated by subtracting the deviation time from the vehicle-side time. That is, the processing function in step S24 is means for correcting the time on the portable terminal side based on the time difference, a time difference indicating that the time is advanced with respect to the vehicle time, and a time difference indicating that the time is delayed. Since there is time, the calculation may be performed to correct the deviation.

  Then, the information specifying device 1 specifies the driver's portable terminal based on the estimated specific time information and the specific time information included in the received priority signal (step S25). Specifically, when the priority signal received in step S13 described above is one, a deviation between the estimated specific time and the received specific time is calculated, and the deviation with respect to the specific time is within a predetermined threshold. If the deviation is within the threshold value, the mobile terminal 2 that has transmitted the priority signal including the specific time information is specified as the driver's mobile terminal. If there are a plurality of priority signals received in step S13, the deviation between the specific time in the portable terminal 2 included in each priority signal and the estimated specific time is calculated, and the deviation is the minimum. The mobile terminal 2 that has transmitted the priority signal including the specific time information is specified as the driver's mobile terminal. Further, information included in the priority signal specified as the driver's mobile terminal is stored in the association information storage unit 32. Further, the signal generator 24 generates a second specific notification signal for notifying that the driver's mobile terminal has been specified, and the notification unit 25 transmits the second specific notification signal via the communication unit 10 ( Step S26). The second specific notification signal includes the identification information of the mobile terminal 2 included in the priority signal.

  Moreover, the portable terminal 2 detects the 2nd specific notification signal which the information specific device 1 transmitted (step S27). If the identification information of the portable terminal 2 included in the received specific notification signal matches the identification information of the own device, it is determined that the own device has been identified as the driver's portable terminal (step S28). ). And the signal generation part 113 of the portable terminal 2 produces | generates the 2nd confirmation notification signal, and the notification part 114 transmits the 2nd confirmation notification signal via the communication part 100 (step S29). The second confirmation notification signal includes identification information in the portable terminal 2.

  Furthermore, the information identification device 1 detects the second identification notification signal transmitted from the mobile terminal 2 (step S30). If the identification information of the mobile terminal 2 included in the received second specific notification signal matches the identification information of the mobile terminal 2 transmitted in the second specific notification signal, the appropriate information It is determined that the specific notification and the specific process have been completed (step S31).

  As described above, even when the mobile terminal 2 is configured to be able to detect that the mobile terminal 2 has been brought into the vehicle interior, the mobile terminal 2 has priority based on a communication signal transmitted from another mobile terminal 2. Since it is comprised so that a signal may be transmitted, the information specific device 1 can recognize correctly the portable terminal 2 carried in the vehicle interior. Furthermore, since the information specifying device 1 is configured to be able to acquire the carry-in notification signal and the priority signal, it is possible to accurately recognize the order in which the plurality of portable terminals 2 brought into the vehicle interior are brought in. it can.

  In the process of calculating the difference (deviation time) between the clock unit 40 of the information specifying device 1 and the clock unit 130 of the mobile terminal 2, the transmission time of the confirmation notification signal in the mobile terminal 2 and the confirmation notification in the information specifying device 1 Although the signal reception time or the current time is used, the information specifying system according to the present invention is not limited to this. For example, the time difference may be calculated using time information in the correlated processing steps. In the case of a specific notification signal, the transmission time of the specific notification signal in the clock unit 40 and the reception time of the specific notification signal in the clock unit 130 The deviation time may be calculated based on the above. Alternatively, the deviation time may be calculated based on the reception time of the specific notification signal in the clock unit 130 and the reception time of the confirmation notification signal in the clock unit 40.

  Moreover, in the specific example mentioned above, in the process which specifies a driver | operator's portable terminal using a priority right signal in the information specific device 1, the gap | clearance time of the clock part 40 of the information specific device 1 and the clock part 130 of the portable terminal 2 is shown. However, the information specifying system according to the present invention is not limited to this. For example, the shift time may be used in the process of specifying the driver's mobile terminal using the carry-in notification signal in the information specifying device 1. Here, as a specific example, a configuration in which a shift time is used in processing for a carry-in notification signal will be described. In addition, the information specifying system in this specific example has the system configuration illustrated in FIG. 1 as a basic configuration, and is configured to execute the processing flows illustrated in FIGS. 2 and 3, that is, the specific example described above. The information specifying system in this specific example is a configuration obtained by partially changing the configuration in FIG. In addition, description is abbreviate | omitted about the structure similar to the specific example mentioned above, and the reference symbol is quoted.

  In addition to the above-described configuration, the calculation unit 27 of the information specifying device 1 in this specific example is configured to correct the time information in the carry-in notification signal with the shift time. Specifically, it is configured to function as means for correcting the time information on the mobile terminal 2 side included in the carry-in notification signal using the deviation time stored in the association information storage unit 32. Even if a plurality of carry-in notification signals are detected, the time information about these signals is corrected with reference to the shift time stored in the association information storage unit 32. That is, accurate time correction is performed on the time information related to the carry-in notification signal transmitted from the mobile terminal 2 specified as the driver's mobile terminal in the previous specific process, and the carry-in from another mobile terminal 2 is performed. The notification signal may be corrected to increase the deviation. Therefore, the calculation unit 27 also functions as means for performing a weighting process on the carry-in notification signal using the shift time.

  Here, with reference to FIG. 4, the identification process of the driver terminal implemented by the information identification system in this specific example will be described. Note that, when the processing configuration illustrated in FIG. 4 is the same as the processing configuration illustrated in FIG. 2, description thereof is omitted here. For example, steps S41 to S44 and S47 to S52 illustrated in FIG. 4 have the same processing configuration as steps S1 to S4 and S6 to S11 illustrated in FIG. First, in the process illustrated in FIG. 4, the time difference calculated in the previous specific process is stored in the association information storage unit 32 of the information specifying apparatus 1. In this state, when receiving the carry-in notification signal including the time information of the mobile terminal 2 (step S43), the information specifying device 1 corrects the time information with the time difference (step S45). For example, when the time information of the portable terminal 2 is used as the transmission time information of the carry-in notification signal, the transmission time information is corrected by the time difference stored in the association information storage unit 32. That is, the calculation unit 27 calculates corrected time information obtained by correcting the transmission time information with the deviation time. Further, even when a plurality of carry-in notification signals are received, the corrected time information obtained by correcting the respective transmission time information is calculated based on the deviation time stored in the association information storage unit 32. Has been. Furthermore, the calculation unit 27 calculates the interval between the corrected time information corrected for each carry-in notification signal and the seating time related to the signal from the pressure sensor. The correction process in step S45 may be performed on the carry-in notification signal every time the carry-in notification signal is received in step S43, and the processes in steps S43 and S44 are performed to detect these signals. It may be configured to be implemented after the completion of.

  Based on a plurality of detection intervals calculated using the corrected time information, an interval that is within a predetermined threshold and that is minimum is specified, and the mobile terminal 2 that has transmitted the carry-in notification signal is used as the driver's mobile terminal. Specify (step S46). The specifying process in step S46 is the same as the process in step S5 described above. By correcting the time information in the portable terminal 2 by this time difference, even if the time of the clock unit 130 of the portable terminal 2 is set to be advanced or set later, the time information of the portable terminal 2 is changed. Since the interval with the seating time can be compared based on this, the timing of the actual boarding operation can be recognized accurately, and the driver's portable terminal can be specified accurately. Furthermore, although the time information in the portable terminal 2 owned by the passenger who rides as a driver, such as the owner of the vehicle, becomes accurate by correcting the shift time, the portable terminal 2 owned by another passenger. Since there is a possibility that correction of the time information at the time of the deviation will increase the deviation, as a result, it is possible to weight the information related to the mobile terminal 2 of the passenger who is frequently a driver. become able to.

  The relationship between the specific example described above and the present invention will be briefly described. The carry-in notification signal described above corresponds to the first notification signal in the present invention. Similarly, the priority right signal is changed to the second notification signal. The specific notification signal corresponds to the third notification signal, and the confirmation notification signal corresponds to the fourth notification signal.

  Vehicles that can employ the information specifying system according to the present invention include automobiles, ships, railroads, airplanes, and the like. The information specifying device may be a device mounted on the vehicle, a device provided outside the vehicle, or may be configured to be able to wirelessly communicate with a sensor mounted on the vehicle. That is, you may be comprised so that the information of the vehicle carrying the sensor may be specified with the communication signal transmitted from the sensor. Furthermore, the pressure sensor may be provided in the driver's seat and the passenger seat.

  DESCRIPTION OF SYMBOLS 1 ... Information identification apparatus, 2 ... Portable terminal, 10 ... Communication part, 20 ... Control part, 21 ... Signal acquisition part, 22 ... Signal discrimination | determination part, 23 ... Information identification part, 24 ... Signal generation part, 25 ... Notification part, DESCRIPTION OF SYMBOLS 26 ... Detection part 27 ... Calculation part 30 ... Storage part 31 ... Communication history information storage part 32 ... Association information storage part 40 ... Clock part 100 ... Communication part 110 ... Control part 111 ... Signal acquisition part 112 ... Discriminating unit 113 ... Signal generating unit 114 ... Notification unit 115 ... Vehicle compartment detection unit 116 ... Acceleration sensor 120 ... Storage unit 121 ... Communication history information storage unit 122 ... Association information storage unit 130 ... the clock.

Claims (5)

The mobile terminal provided with the acceleration sensor and the information specifying device are configured to be wirelessly communicable, and driving based on detection of the communication signal transmitted from the mobile terminal brought into the vehicle cabin of the vehicle. In an information identification system configured to identify an individual's mobile terminal,
The portable terminal is
Detecting means for detecting that the vehicle is brought into the vehicle interior based on a signal output from the acceleration sensor;
A first notification means for transmitting a first notification signal for notifying that the portable terminal has been brought into the passenger compartment when the detection means detects that the portable terminal has been brought into the passenger compartment;
The information specifying device includes:
First calculating means for calculating a time difference between a time of a clock provided in the portable terminal and a time of a clock that gives time information to a device mounted on the vehicle;
The interval between the corrected time information obtained by correcting the time information in the portable terminal included in the first notification signal with the shift time, and the time information regarding the signal output from the pressure sensor provided in the driver's seat of the vehicle. And a first identification unit that identifies the portable terminal that has transmitted the first notification signal as a portable terminal of a driver when the value is within a predetermined threshold and the minimum. The information specifying device includes:
Association information storage means for storing information on the deviation time calculated by the first calculation means;
When the first notification signal is detected, a second correction time is calculated by correcting the time information included in the first notification signal using the deviation time stored in the association information storage unit. And a calculating means,
The first calculation means is configured to calculate a time difference between time information in the portable terminal specified as a driver's portable terminal and time information in the vehicle. Information identification system described. The portable terminal is
A second notification means for transmitting a second notification signal for notifying that the vehicle is already in the passenger compartment when the first notification signal transmitted from another portable terminal is detected;
The information specifying device includes:
Third calculating means for calculating an estimated time obtained by estimating the time information in the portable terminal based on the time difference in the vehicle and the time information in the vehicle;
When the second notification signal is detected, and the deviation between the time information in the mobile terminal included in the second notification signal and the estimated time is within a predetermined threshold and is minimum, the second notification signal 3. The information specifying system according to claim 1, further comprising: a second specifying unit that specifies the portable terminal that has transmitted the message as a portable terminal of the driver.   The said 1st specific means is comprised so that a driver | operator's portable terminal may be specified when the said 1st notification signal is detected and the said 2nd notification signal is not detected. Information identification system described in The information specifying device includes:
A third notification means for transmitting a third notification signal for notifying that the driver's mobile terminal has been specified by the first specifying means;
The portable terminal is
Communication history information storage means for storing wireless communication history information;
When the third notification signal is detected, and when the identification information of the portable terminal included in the third notification signal matches the identification information of the own device, the fact that the third notification signal has been confirmed is notified. A fourth notification means for transmitting a fourth notification signal;
The second notification means detects the first notification signal, and transmits the second notification signal when the transmission history information of the fourth notification signal is stored in the communication history information storage means.
When the first calculation unit detects the fourth notification signal, the first calculation unit calculates a shift time based on the time information in the portable terminal and the time information in the vehicle included in the fourth notification signal. The information specifying system according to claim 3 or 4, wherein the information specifying system is configured as follows.

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