JP2017082396A - Driver identification system, electronic key - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driver identification system capable of accurately identifying a driver, and an electronic key used with the driver identification system.SOLUTION: A smart key 3 includes a vibration sensor 36 for detecting a vibration generating on the smart key 3. A smart phone includes a telephone-side vibration sensor for detecting a vibration generating on the smart phone. A driver identification system includes: an identity determination part 372 for determining whether the vibration detected by the vibration sensor 36 and the vibration detected by the telephone-side vibration sensor are the same, and determining that the smart phone is being carried by a driver when the vibrations are determined to be the same; a storage part for storing a person who could drive a vehicle as a registered person and store the smart phone in correlation with the registered person; and a driver identification part that identifies the registered person correlated with the smart phone as the driver among registered persons stored in the storage part, when the identity determination part 372 determines that the smart phone is being carried by the driver.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a driver specifying system including an electronic key, and the electronic key.

  There is known a system including an in-vehicle device provided in a vehicle and an electronic key that wirelessly communicates with the in-vehicle device when locking and unlocking a vehicle door. A system is also known that communicates with the electronic key, reads out a setting value associated with the electronic key, and automatically adjusts the seat position, the steering position, the mirror angle, and the like (for example, Patent Document 1). .

JP-A-9-123924

  In many cases, there are multiple people who may drive a single vehicle. For example, when a family shares a single vehicle. When there is a possibility that a plurality of people drive a single vehicle, a plurality of people often use one electronic key.

  The appropriate seat position, steering position, mirror angle, etc. vary from driver to driver. Therefore, as in Patent Document 1, if the seat position, steering position, mirror angle, etc. are adjusted according to the electronic key, the proper seat position, steering position, mirror angle, etc. according to the actual driver may not be obtained. There is sex.

  Here, in recent years, it has become common to own a mobile phone such as a smartphone for each individual, and the mobile phone rarely uses one mobile phone. In addition, many mobile phones are capable of short-range communication, as typified by multifunctional mobile phones called smartphones. Therefore, it is conceivable that the driver is specified by the vehicle-mounted device communicating directly or indirectly with the mobile phone in order to specify the driver using the electronic key.

  However, if a passenger other than the driver is on a vehicle and the passenger also carries a mobile phone, there may be a plurality of mobile phones that the driver may carry in a narrow area. Arise. If there are a plurality of mobile phones in or near the vehicle, there is a possibility that a person who does not drive this time will be erroneously specified as a driver.

  The present invention has been made based on this situation, and an object of the present invention is to provide a driver specifying system capable of specifying a driver with high accuracy, and an electronic key used in the driver specifying system. is there.

  The above object is achieved by a combination of the features described in the independent claims, and the subclaims define further advantageous embodiments of the invention. Reference numerals in parentheses described in the claims indicate a correspondence relationship with specific means described in the embodiments described later as one aspect, and do not limit the technical scope of the present invention. .

  To achieve the above object, the present invention comprises an electronic key (3) that communicates with an in-vehicle device (2) mounted on a vehicle when the door of the vehicle is locked and unlocked, and a mobile phone (4). The electronic key includes a key-side vibration sensor (36) that detects vibration generated in the electronic key, and the mobile phone detects vibration generated in the mobile phone. The telephone-side vibration sensor (45) is provided, and the driver identification system determines whether or not the vibration detected by the key-side vibration sensor and the vibration detected by the telephone-side vibration sensor are identical. If it is determined, the mobile phone stores an identity determination unit (372) that determines that the driver is a mobile phone carried by the driver, and a plurality of persons who may drive the vehicle as registrants, and , A storage unit (25) that stores a mobile phone owned by each recorder in association with a registrant, and an identity determination unit stores a mobile phone when the mobile phone is a mobile phone carried by a driver. A driver identification unit (261) that identifies a registrant corresponding to the mobile phone as a driver from registrants stored in the unit.

  According to the present invention, the identity determining unit that determines the identity of the vibration generated in the electronic key and the vibration generated in the mobile phone is provided. When the electronic key and the mobile phone are carried by the same person, it is considered that the vibration generated in the electronic key is the same as the vibration generated in the mobile phone. Therefore, if it is determined that the vibrations are identical, the mobile phone determines that the driver is carrying it. A driver specific | specification part specifies the registrant corresponding to the mobile telephone which it determined with the driver carrying from the registrant memorize | stored in the memory | storage part to a driver. The mobile phone carried by the person carrying the electronic key is likely to be a mobile phone owned by the driver. Therefore, by doing so, the driver can be specified with high accuracy.

It is a figure which shows the structure of the driver specific system 1 of embodiment. It is a block diagram which shows the structure of the vehicle equipment 2 of FIG. It is a block diagram which shows the structure of the smart key 3 of FIG. It is a block diagram which shows the structure of the smart phone 4 of FIG. It is a flowchart which shows the process which the control part 26 of the vehicle equipment 2 performs. It is a flowchart which shows the process which the control part 37 of the smart key 3 performs. It is a flowchart which shows the process which the control part 46 of the smart phone 4 performs. It is a figure which illustrates the vibration signal which vibration sensors 36 and 45 detect. FIG. 8 is a sequence diagram when the processes of FIGS. 5 to 7 are executed. It is a figure explaining the determination method of the identity of the vibration by the identity determination part in the modification 1. It is a figure explaining the determination method of the identity of the vibration by the identity determination part in the modification 3.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the driver identification system 1 of this embodiment includes an in-vehicle device 2, a smart key 3, and a smartphone 4. FIG. 1 shows two smartphones 4a and 4b. When these are not distinguished, they are described as the smartphone 4. The number of the smartphones 4 is not necessarily two, and may be three or more, or may be one. Among these, the smart key 3 corresponds to the electronic key in the claims, and the smartphone 4 corresponds to the mobile phone in the claims.

  The in-vehicle device 2 and the smart key 3 are used in a vehicle door locking / unlocking system that can lock and unlock the door of the vehicle 5 without using a mechanical key. The in-vehicle device 2 and the smart key 3 communicate with each other wirelessly. I do. The smart key 3 and the smartphone 4 also perform wireless communication with each other.

[Configuration of in-vehicle device 2]
As shown in FIG. 2, the in-vehicle device 2 includes a transmission signal creation unit 21, an LF modulation unit 22, an RF demodulation unit 23, a reception data analysis unit 24, a storage unit 25, and a control unit 26.

  The transmission signal creation unit 21 creates a signal to be transmitted to the smart key 3. This signal is a request signal for requesting a response from the smart key 3, for example. The LF modulation unit 22 modulates a signal such as a request signal created by the transmission signal creation unit 21 with a carrier wave in the LF band (for example, 135 kHz) and transmits the modulated signal to the outside of the vehicle 5. As is well known, the range in which the signal modulated by the LF modulator 22 can be received is about 1 m around the vehicle 5. When the smart key 3 receives the request signal, it returns a response signal using radio waves in the RF band.

  The RF demodulator 23 corresponds to the in-vehicle device side receiver of the claims, and receives and demodulates the signal transmitted by the smart key 3. The reception data analysis unit 24 analyzes the signal demodulated by the RF demodulation unit 23. Specifically, the demodulated signal is a signal transmitted by the smart key 3, and the signal includes an ID code, and the ID code is the ID code registered in the storage unit 25. It is determined whether or not they match (that is, whether or not collation is established). In addition, when the signal demodulated by the RF demodulator 23 is a signal that identifies the smartphone 4 carried by the driver (hereinafter referred to as a “smartphone specific signal”), the received data analysis unit 24 uses the signal as the control unit 26. Output to. This smartphone specific signal corresponds to the mobile phone specific signal in the claims.

  The memory | storage part 25 is a writable non-volatile memory | storage part, and the person who may drive the vehicle 5 is memorize | stored as a registrant. Moreover, the smart phone 4 which each registrant owns is matched and stored with the registrant. Furthermore, the seat position of the driver's seat and the mirror angle are also stored in association with the registrant for some or all registrants. Addition and deletion of the registrant, storage and deletion of the smartphone 4 corresponding to the registrant, storage and deletion of the sheet position and mirror angle corresponding to the registrant can be performed by the user at any time by a predetermined operation.

  The control unit 26 is a computer including a CPU, a ROM, a RAM, and the like, and the CPU executes a program stored in a substantial recording medium such as a ROM while using a temporary storage function of the RAM. Thereby, the control unit 26 functions as the driver specifying unit 261, outputs a function to instruct the transmission signal generation unit 21 to generate a transmission signal, and outputs an instruction to lock and unlock the door of the vehicle 5 to the door lock ECU 6. Realize the function. When these functions are executed, a method corresponding to the program is executed. The transmission signal creation unit 21 and the reception data analysis unit 24 may also be executed by the control unit 26. Note that some or all of these functions executed by the control unit 26 may be configured in hardware by one or a plurality of ICs.

  When the signal acquired from the RF demodulation unit 23 via the reception data analysis unit 24 is a smartphone specific signal, the driver specifying unit 261 is specified by the smartphone specifying signal from the smartphone 4 stored in the storage unit 25. 4 is determined. Then, the registrant corresponding to the determined smartphone 4 is specified as the driver of the vehicle 5.

  When the seat position corresponding to the specified driver is stored in the storage unit 25, a signal instructing to adjust the seat position to the seat position corresponding to the driver is output to the seat ECU 7. When the mirror angle for the identified driver is stored in the storage unit 25, a signal instructing to adjust the mirror angle to the mirror angle corresponding to the identified driver is output to the mirror ECU 8. Note that the control unit 26, the door lock ECU 6, the seat ECU 7, and the mirror ECU 8 may be directly connected to each other as shown in FIG. 2, or may be connected to each other via an in-vehicle LAN.

[Configuration of Smart Key 3]
As shown in FIG. 3, the smart key 3 includes an LF demodulator 31, a received data analyzer 32, a transmission signal generator 33, an RF modulator 34, a BLE communication unit 35, a vibration sensor 36, and a controller 37. . The configuration of the smart key 3 is the same as that of a known smart key except for control using the BLE communication unit 35 and the vibration sensor 36 among the BLE communication unit 35, the vibration sensor 36, and the control unit 37.

  The LF demodulator 31 is a configuration for demodulating the request signal transmitted from the in-vehicle device 2, receives the LF band radio wave, demodulates the radio wave, and extracts the request signal. The LF demodulator 31 corresponds to the key side receiver of the claims.

  The reception data analysis unit 32 analyzes the signal demodulated by the LF demodulation unit 31 and determines whether or not the signal is a request signal. If the request signal is determined, a signal indicating that the request signal has been received is output to the control unit 37.

  When the transmission signal creation unit 33 acquires a signal instructing creation of a transmission signal from the control unit 37, the transmission signal creation unit 33 creates a signal determined based on the instruction, and outputs the created signal to the RF modulation unit 34. The signal to be created is, for example, a response signal that is transmitted in response to a request signal. The transmission signal creation unit 33 also functions as a transmission processing unit in claims. The transmission signal creation unit 33 creates a smartphone identification signal indicating the smartphone 4 identified by the identity determination unit 372 included in the control unit 37, and the signal is also generated. Output to the RF modulation unit 34.

  The RF modulation unit 34 modulates and transmits a signal such as a request signal generated by the transmission signal generation unit 33 with an RF band carrier wave (for example, 315 MHz). The RF modulation unit 34 corresponds to a second key side transmission unit in claims.

  The BLE communication unit 35 is a communication unit that transmits and receives signals in accordance with the Bluetooth Low Energy standard (Bluetooth is a registered trademark). Hereinafter, Bluetooth Low Energy is abbreviated as BLE. The smartphone 4 is also provided with a vibration sensor 45, and the BLE communication unit 35 transmits a measurement start signal instructing the smartphone 4 to start vibration measurement. Further, the BLE communication unit 35 receives a vibration signal measured by the vibration sensor 45 of the smartphone 4. The BLE communication unit 35 corresponds to a key side transmission unit, a first key side transmission unit, and a vibration signal reception unit.

  The vibration sensor 36 is a sensor that detects vibration generated in the smart key 3, and is an acceleration sensor in the present embodiment. The vibration sensor 36 corresponds to a key-side vibration sensor in the claims.

  The control unit 37 is a computer including a CPU, a ROM, a RAM, and the like, and the CPU executes a program stored in a substantial recording medium such as a ROM while using a temporary storage function of the RAM. Thereby, the control unit 37 functions as the vibration measurement unit 371 and the identity determination unit 372, and also realizes a function of instructing the transmission signal generation unit 33 to generate a transmission signal and a function of controlling the BLE communication unit 35. When these functions are executed, a method corresponding to the program is executed. The reception data analysis unit 32 and the transmission signal creation unit 33 may also be executed by the control unit 37. Note that some or all of these functions executed by the control unit 37 may be configured in hardware by one or a plurality of ICs.

  When the reception data analysis unit 32 determines that the request signal has been received, the vibration measurement unit 371 starts the vibration measurement by the vibration sensor 36, and the control unit 37 receives the vibration signal for the data collection period detected by the vibration sensor 36. Is stored in a predetermined memory such as a RAM. The data collection period is preferably set to be shorter than the time from when the request signal is received until the driver grasps the door handle and opens the door. For example, the data collection period is set between several hundred milliseconds and one second. The vibration measurement unit 371 corresponds to a key-side vibration measurement unit in claims.

  The identity determination unit 372 determines whether the vibration detected by the vibration sensor 36 included in the smart key 3 and the vibration represented by the vibration signal received from the smartphone 4 are identical. A method of determining the identity of vibration will be described later with reference to FIG. If it is determined that the vibrations are identical, the smartphone 4 carried by the driver is identified as the smartphone 4 that is determined to be identical to the vibration generated in the smart key 3. This is because if the driver carries the smartphone 4 and the smart key 3, the vibration generated in the smart key 3 and the vibration generated in the smartphone 4 should be identical. When the identity determination unit 372 identifies the smartphone 4, as described above, the smartphone identification signal indicating the identified smartphone 4 is created by the transmission signal creation unit 33, and the smartphone identification signal is transmitted from the RF modulation unit 34 to the vehicle-mounted device 2. Sent to.

[Configuration of smartphone 4]
As shown in FIG. 4, the smartphone 4 includes a BLE module 41, a display unit 42, a vibration unit 43, a speaker 44, a vibration sensor 45, and a control unit 46. Among these, except the function which the control part 46 performs, it is the same structure as a well-known smart phone.

  The BLE module 41 includes a BLE control unit 411 and a communication unit 412. The BLE module 41 corresponds to a telephone-side receiving unit in the claims. The BLE control unit 411 controls the communication unit 412. The communication unit 412 transmits and receives signals in accordance with the BLE communication standard by being controlled by the BLE control unit 411.

  The display unit 42 displays that communication with the smart key 3 has been performed. The vibration unit 43 vibrates the smartphone 4 at the time of incoming call or mail. The speaker 44 outputs the other party's voice during a call or outputs various sounds determined by various applications executed by the smartphone 4.

  The vibration sensor 45 is a sensor that detects vibration generated in the smartphone 4, and is an acceleration sensor in the present embodiment. The vibration sensor 45 corresponds to the telephone-side vibration sensor in the claims.

  The control unit 46 is a computer including a CPU, a ROM, a RAM, and the like, and the CPU executes a program stored in a substantial recording medium such as a ROM while using a temporary storage function of the RAM. Thereby, the control unit 46 functions as the vibration measurement unit 461. When this function is executed, a method corresponding to the program is executed.

  In addition, the control unit 46 and the BLE control unit 411 are connected so as to be able to communicate with each other, and the control unit 46 sets the advertisement mode to the BLE control unit 411 when not connected to the BLE communication unit 35 of the smart key 3. Instruct. In the advertisement mode, the communication unit 412 of the BLE module 41 periodically transmits an advertisement signal. Further, the control unit 46 outputs the vibration measurement result by the vibration measurement unit 461 to the BLE control unit 411 and outputs an instruction to transmit the vibration measurement result.

  On the other hand, the BLE control unit 411 outputs a measurement start signal instructing the vibration measurement start received by the communication unit 412 from the smart key 3 to the control unit 46. Note that some or all of these functions executed by the control unit 46 may be configured in hardware by one or a plurality of ICs.

  The vibration measurement unit 461 starts vibration measurement by the vibration sensor 45 when the control unit 46 acquires a measurement start signal, and the control unit 46 includes a vibration signal for the data collection period detected by the vibration sensor 45 such as a RAM. Store in a predetermined memory. The data collection period is the same as the data collection period in which the vibration measurement unit 371 included in the control unit 37 of the smart key 3 stores the vibration signal. The vibration measuring unit 461 corresponds to the telephone-side vibration measuring unit in the claims.

[Processing of control unit 26 of in-vehicle device 2]
The control part 26 of the vehicle equipment 2 performs the process shown in FIG. 5 periodically. In step S <b> 1, the transmission signal creation unit 21 creates a request signal and outputs the request signal to the LF modulation unit 22. As a result, the request signal is transmitted to the surroundings of the vehicle 5 by LF band radio waves. When the smart key 3 receives this request signal, a response signal is transmitted from the smart key 3.

  Therefore, in step S2, it is determined whether a response signal has been received. This determination is made based on whether or not a signal indicating that it has been determined that the response signal has been received is received from the reception data analysis unit 24. If the determination in step S2 is NO, the process returns to step S1, and if YES, the process proceeds to step S3.

  In step S3, the elapsed time after receiving the response signal is measured. In step S4, it is determined whether a preset standby time has elapsed after receiving the response signal. This standby time is a time for the smart key 3 and the smartphone 4 to store a vibration signal for the data collection period and wait until the identity determination unit 372 of the smart key 3 outputs a determination result. If the determination in step S4 is NO, the process returns to step S3 to continue waiting, and if YES, the process proceeds to step S5.

  In step S5, the transmission signal generation unit 21 is instructed to generate a specific result request signal that is a signal for requesting a result of specifying the smartphone 4 carried by the driver. As a result, the specific result request signal is transmitted to the surroundings of the vehicle 5 by radio waves in the LF band. This specific result request signal is received by the smart key 3 that has transmitted the response signal. The smart key 3 that has received the identification result request signal transmits a smartphone identification signal by radio waves in the RF band.

  Therefore, in step S6, the smartphone specifying signal transmitted by the smart key 3 is received. Specifically, the RF demodulation unit 23 demodulates RF band radio waves to extract a smartphone specific signal, and the control unit 26 acquires the smartphone specific signal via the reception data analysis unit 24.

  Steps S7 and S8 are processes executed by the driver specifying unit 261. In step S <b> 7, the smartphone 4 is identified from the smartphone identification signal, and a registrant corresponding to the identified smartphone 4 is determined from the correspondence relationship between the registrant stored in the storage unit 25 and the smartphone 4. Then, the determined registrant is identified as the current driver.

  In step S8, when the seat position and mirror angle corresponding to the driver specified in step S7 are stored in the storage unit 25, the seat ECU 7 and mirror ECU 8 adjust the sheet position and mirror angle corresponding to the driver. To instruct.

[Processing of control unit 37 of smart key 3]
The control unit 37 of the smart key 3 periodically executes the process shown in FIG. In step S11, a request signal is awaited. In step S12, it is determined whether a request signal has been received. If this judgment is NO, it will return to Step S11, and if it is YES, it will progress to Step S13.

  In step S13, the transmission signal generator 33 is made to generate a response signal. Thereby, the response signal modulated by the RF modulation unit 34 into the radio wave of the RF band is transmitted.

  In step S14, vibration measurement is started and communication by the BLE communication unit 35 is started. The vibration signal detected by the vibration sensor 36 is sequentially stored in a predetermined memory until the vibration measurement is finished after the vibration measurement is started.

  In step S15, an advertisement signal transmitted from the smartphone 4 is awaited. In step S16, it is determined whether or not an advertisement signal has been received. If this judgment is NO, it will return to Step S15, and if it is YES, it will progress to Step S17.

  In step S17, it connects with the smart phone 4 which detected presence by receiving the advertisement signal. In step S <b> 18, the measurement start signal is transmitted from the BLE communication unit 35 to the connected smartphone 4.

  In step S19, it is determined whether or not a measurement start signal has been transmitted to all the smartphones 4 that have received the advertisement signal by connecting to all the smartphones 4 that have received the advertisement signal. If this determination is NO, the process returns to step S17, and if YES, the process proceeds to step S20.

  In step S20, the elapsed time after the determination in step S19 becomes YES is measured. In step S21, it is determined whether the data collection period has elapsed. If this judgment is NO, it will return to Step S20, and if it is YES, it will progress to Step S22.

  In step S22, the vibration measurement started in step S13 is terminated. Step S22 and step S14 described above are processes executed by the vibration measurement unit 371. In step S23, communication by the BLE communication unit 35 is started again, and in step S24, an advertisement signal transmitted from the smartphone 4 is awaited. In step S25, it is determined whether or not an advertisement signal has been received. If this judgment is NO, it will return to Step S24, and if it is YES, it will progress to Step S26.

  In step S26, it connects with the smart phone 4 which detected presence by receiving the advertise signal. In step S27, a vibration measurement result is acquired from the connected smartphone 4. This vibration measurement result is a vibration signal detected by the vibration sensor 45 during the data collection period after the smartphone 4 receives the measurement start signal.

  Step S28 is a process executed by the identity determination unit 372, and executes an identity determination process. In this embodiment, this identity determination process is performed by comparing the number of steps determined from vibration signals collected during the data collection period. Specifically, the number of steps that the person carrying the smartphone 4 walks within the data collection period is determined from the vibration measurement result acquired in step S27. Further, the number of steps taken by the person carrying the smart key 3 within the data collection period is determined from the waveform represented by the vibration signal detected by the vibration sensor 36 of the smart key 3.

  FIG. 8 is a diagram illustrating a vibration signal. In the present embodiment, the number of steps is determined by counting the number of peaks present in the vibration signal within the data collection period. In FIG. 8, the peak of the vibration signal is indicated by a broken-line circle.

  The number of steps determined from the waveform represented by the vibration signal detected by the vibration sensor 45 of the smartphone 4 during the data collection period is compared with the number of steps determined from the waveform represented by the vibration signal detected by the vibration sensor 36 of the smart key 3 during the data collection period. To do. If the difference between the two is an error, it is determined that the vibrations are identical. The identity of vibration may be determined using a ratio instead of the difference between the two.

  In step S29, it is connected to all the smartphones 4 that have received the advertisement signal, and it is determined whether or not vibration measurement results have been acquired from all the smartphones 4 that have received the advertisement signal. If this determination is NO, the process returns to step S26, and if YES, the process proceeds to step S30.

  In step S30, the control unit 26 of the in-vehicle device 2 executes step S5 and waits for a specific result request signal transmitted by LF radio waves. In step S31, it is determined whether or not the specific result request signal has been received. If this judgment is NO, it will return to Step S30, and if it is YES, it will progress to Step S32.

  In step S32, the transmission signal creation unit 33 creates a smartphone identification signal that identifies the smartphone 4 that has been determined to have the same vibration by repeating steps S26 to S29. Thereby, the smart phone specific signal is transmitted to the in-vehicle device 2 by radio waves in the RF band. The smartphone specific signal transmitted in step S32 is received by the in-vehicle device 2 in step S6 described above.

[Processing of the control unit 46 of the smartphone 4]
The control part 46 of the smart phone 4 performs the process shown in FIG. 7 periodically. In step S41, an advertisement signal is transmitted. When the smart key 3 receives this advertisement signal, a signal for connecting to the smartphone 4 is transmitted. After the signal is received by the BLE module 41 of the smartphone 4, when a predetermined communication or process for connection is performed, the smartphone 4 and the smart key 3 are connected by BLE communication.

  In step S42, processing for connecting the smartphone 4 and the smart key 3 is performed by BLE communication, and it is determined whether or not the smartphone 4 and the smart key 3 are in a connected state. If this judgment is NO, it will return to Step S41, and if it is YES, it will progress to Step S43.

  In a state where the smart key 3 and the smartphone 4 are connected, the control unit 37 of the smart key 3 executes step S18 and transmits a measurement start signal. In step S43, this measurement start signal is received. Step S <b> 44 is a process executed by the vibration measurement unit 461 and performs vibration measurement by the vibration sensor 45. In step S45, an advertisement signal is transmitted. In step S46, it is determined whether or not the smart key 3 is connected.

  The smart key 3 does not resume communication by the BLE communication unit 35 until the data collection period elapses after the measurement start signal is transmitted. When the communication by the BLE communication unit 35 is not resumed, the smartphone 4 and the smart key 3 are not connected. If the smart key 3 is not connected, the determination in step S46 is NO. If determination of step S46 is NO, it will return to step S44 and will continue vibration measurement.

  Since the smart key 3 does not resume communication by the BLE communication unit 35 until the data collection period elapses after the measurement start signal is transmitted, the determination in step S46 is NO until the data collection period elapses. Therefore, until the data collection period elapses after the vibration measurement is started, the smartphone 4 continues the vibration measurement and periodically transmits an advertisement signal.

  When the data collection period elapses after the vibration measurement is started and the smart key 3 transmits a signal for connecting to the smartphone 4 and the BLE module 41 of the smartphone 4 receives the signal, the determination in step S46 is YES. Become.

  If the determination in step S46 is YES, the process proceeds to step S47, and the vibration measurement result is transmitted to the smart key 3 via the BLE module 41. The vibration measurement result transmitted here is acquired by the smart key 3 in step S27 of FIG.

[Signal processing flow]
FIG. 9 is a sequence diagram illustrating the processing illustrated in FIGS. 5 to 7. FIG. 9 is an example in which the smartphones 4 a and 4 b can communicate with the smart key 3.

  At time t1, the in-vehicle device 2 executes step S1 and transmits a request signal. The smart key 3 that has received the request signal transmits the response signal to the in-vehicle device 2 by executing step S13 at time t2. Thereafter, the smart key 3 executes step S14 at time t3 to start vibration measurement.

  The smartphones 4a and 4b periodically transmit advertisement signals. In the example of FIG. 9, the smartphone 4b transmits the advertisement signal at time t4. The smart key 3 that has received this advertisement signal is connected to the smartphone 4b and transmits a measurement start signal to the smartphone 4b by executing steps S17 and S18 at time t5. At this time, the smartphone 4b receives the measurement start signal in step S43. The smartphone 4b that has received the measurement start signal executes Step S44 at time t6 and starts vibration measurement.

  The smartphone 4a transmits the advertisement signal at time t7. The smart key 3 that has received this advertisement signal is connected to the smartphone 4a at time t8 and transmits a measurement start signal to the smartphone 4a. The smartphone 4b receives this measurement start signal. The smartphone 4a that has received the measurement start signal starts vibration measurement from time t9.

  At time t10, since the data collection period has elapsed and the determination in step S21 is YES, the smart key 3 executes step S22 to finish the vibration measurement, and further executes steps S23 and S24 to obtain a signal. It will be in a standby state.

  The smartphone 4b periodically transmits the advertisement signal after the time t6, but FIG. 9 does not show all the times for transmitting the advertisement signal. The advertisement signal transmitted by the smartphone 4b by executing step S45 at time t11 is received by the smart key 3 that is in a signal waiting state.

  Thereafter, at time t12, the smart key 3 is connected to the smartphone 4b by executing step S26. The smartphone 4b connected to the smart key 3 executes step S47 and transmits the vibration measurement result to the smart key 3, and the smart key 3 receives the vibration result in step S27.

  At time t <b> 13, the smart key 3 that has received the vibration measurement result executes step S <b> 28 and performs identity determination processing using the received vibration measurement result and the vibration measurement result measured by its own vibration sensor 36.

  At time t14, the advertisement signal transmitted by the smartphone 4a executing step S45 is received by the smart key 3. Thereafter, at time t15, the smart key 3 is connected to the smartphone 4a, the smartphone 4a transmits the vibration measurement result to the smart key 3, and the smart key 3 receives the vibration result.

  At time t16, the smart key 3 performs identity determination processing to determine whether the vibration measurement result received at time t15 and the vibration measurement result measured by its own vibration sensor 36 are identical. Do.

  At time t17, the in-vehicle device 2 determines YES in step S4 after the standby time has elapsed. Therefore, at time t18, step S5 is executed, and the specific result request signal is transmitted to the smart key 3 using radio waves in the LF band. The smart key 3 that has received the identification result request signal transmits the smartphone identification signal to the in-vehicle device 2 at time t19, and the in-vehicle device 2 receives the smartphone identification signal.

  Although not shown in FIG. 9, as described above, the in-vehicle device 2 that has received the smartphone specifying signal specifies the smartphone 4 from the smartphone specifying signal, and further specifies the current driver from the specified smartphone 4.

[Effect of the embodiment]
As described above, the embodiment described above includes the identity determination unit 372 that determines the identity between the vibration generated in the smart key 3 and the vibration generated in the smartphone 4. When the smart key 3 and the smartphone 4 are carried by the same person, it is considered that the vibration generated in the smart key 3 and the vibration generated in the smartphone 4 are identical. Therefore, if the identity determination unit 372 determines that the vibrations are identical, the smartphone 4 determines that the driver is carrying. The driver specifying unit 261 specifies, from the registrants stored in the storage unit 25, the registrant corresponding to the smartphone 4 that the identity determination unit 372 has determined that the driver is carrying. The smart phone 4 carried by the person carrying the smart key 3 is likely to be the smart phone 4 owned by the driver. Therefore, by doing so, the driver can be specified with high accuracy.

  Moreover, in this embodiment, the smart key 3 and the smart phone 4 start vibration measurement, when the smart key 3 receives the request signal which the vehicle equipment 2 transmits. As a result, vibration measurement can be started and the driver can be specified immediately before the ride where the driver needs to be specified, and vibration measurement is performed when unnecessary, thereby reducing unnecessary power consumption due to unnecessary vibration measurement. Can be suppressed.

  In the present embodiment, since the smart key 3 includes the identity determination unit 372, the vibration measured by the vibration measurement unit 371 is compared to the case where the vehicle-mounted device 2 includes the identity determination unit 372. There is no need to transmit the measurement result to the in-vehicle device 2. Therefore, the amount of communication data can be reduced.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the above-mentioned embodiment, The following modification is also contained in the technical scope of this invention, Furthermore, the summary other than the following is also included. Various modifications can be made without departing from the scope. In the following description, when only a part of the configuration is described, the embodiment described above can be applied to the other part of the configuration.

<Modifications 1 and 2>
The identity determination unit 372 of the above-described embodiment determines the identity of the number of steps, and the number of steps has been obtained by counting the number of peaks present in the vibration signal within the data collection period. On the other hand, in the first modification, the number of times that the vibration signal changes from a value larger than 0 to a value smaller than 0 is counted as the number of steps. FIG. 10 shows a portion where the vibration signal is changed from a value larger than 0 to a value smaller than 0 by a dotted circle. As a second modification, the number of steps may be counted as the number of times that the vibration signal changes from a value smaller than 0 to a value larger than 0.

<Modification 3>
Further, the identity determination unit may determine the identity of the vibration by comparing the amplitude ratio of the other peak to the maximum peak of the vibration signal within the data collection period, instead of determining the identity of the number of steps. Good.

  In this case, the identity determination unit calculates the amplitude ratio of the other peak to the maximum peak in the data collection period in the waveform representing the vibration detected by the vibration sensor 36. In addition, the amplitude ratio of the other peak to the maximum peak in the data collection period in the waveform representing the vibration detected by the vibration sensor 45 is also calculated. And the identity of a vibration is determined by comparing the magnitude | size of an amplitude ratio about the peak corresponding to each other determined based on a mutual maximum peak.

  FIG. 11 shows an example of the vibration signal. In the example of FIG. 11, the peak B is the maximum peak within the data collection period. With this peak B as a reference, the amplitude ratio of peak A is 0.6, the amplitude ratio of peak C is 0.3, and the amplitude ratio of peak D is 0.2.

  If the vibration signal shown in FIG. 11 is a signal detected by the vibration sensor 36 of the smart key 3, the amplitude ratio is similarly calculated for the vibration signal detected by the vibration sensor 45 of the smartphone 4. And the magnitude | size of an amplitude ratio is compared about the peak corresponding to each other determined based on a mutual maximum peak. The peaks corresponding to each other determined based on the mutual maximum peak are, for example, the peak of the vibration signal detected by the vibration sensor 45 corresponding to the peak A is the peak one previous to the maximum peak of the vibration signal detected by the vibration sensor 45. It is.

  The comparison of the magnitude of the amplitude ratio is performed by, for example, the difference in the magnitude of the amplitude ratio. If the difference in the amplitude ratio is within a certain value for each peak, it is determined that the vibrations are identical.

<Modification 4>
In the above-described embodiment, the smart key 3 includes the identity determination unit 372. However, the in-vehicle device 2 may include the identity determination unit 372, or the smartphone 4 may include.

<Modification 5>
Further, the smart key 3 or the smartphone 4 may include the storage unit 25 and the driver specifying unit 261. In this case, the identification result by the driver identification unit 261 is transmitted to the in-vehicle device 2.

<Modification 6>
In the above-described embodiment, the smartphone 4 is shown as the mobile phone. However, instead of the smartphone 4, a mobile phone not called the smartphone 4 such as a mobile phone having a mechanical numeric keypad can be used.

1: Driver specific system 2: In-vehicle device 3: Smart key 4: Smartphone
5: Vehicle 6: Door lock ECU 7: Seat ECU 8: Mirror ECU 21: Transmission signal creation unit 22: LF modulation unit 23: RF demodulation unit 24: Received data analysis unit 25: Storage unit 26: Control unit 31: LF demodulation Unit 32: Received data analysis unit 33: Transmission signal creation unit 34: RF modulation unit 35: BLE communication unit 36: Vibration sensor 37: Control unit 41: BLE module 42: Display unit 43: Vibration unit 44: Speaker 45: Vibration sensor 46: Control unit 261: Driver specifying unit 371: Vibration measurement unit 372: Identity determination unit 411: BLE control unit 412: Communication unit 461: Vibration measurement unit

Claims (6)

A driver specification that includes an electronic key (3) that communicates with an in-vehicle device (2) mounted on the vehicle when the door of the vehicle is locked and unlocked, and a mobile phone (4), and specifies a driver that drives the vehicle A system,
The electronic key includes a key-side vibration sensor (36) for detecting vibration generated in the electronic key,
The mobile phone includes a phone-side vibration sensor (45) for detecting vibration generated in the mobile phone,
The driver identification system is:
It is determined whether or not the vibration detected by the key-side vibration sensor and the vibration detected by the telephone-side vibration sensor are identical. An identity determination unit (372) that determines that the mobile phone is being carried;
A storage unit (25) for storing a plurality of persons who may drive the vehicle as registrants, and storing the mobile phones owned by the registrants in association with the registrants;
When the identity determination unit determines that the mobile phone is the mobile phone carried by the driver, the registration corresponding to the mobile phone is received from the registrant stored in the storage unit. And a driver specifying unit (261) for specifying a person as the driver. In claim 1,
Comprising the in-vehicle device,
The in-vehicle device sequentially transmits a request signal for requesting a response to the electronic key in order to detect whether the electronic key exists around the vehicle,
The electronic key is
A key side receiving unit (31) for receiving the request signal transmitted by the in-vehicle device;
A key-side vibration measuring unit (371) for starting vibration detection by the key-side vibration sensor based on the reception of the request signal by the key-side receiving unit;
A key side transmission unit (35) for transmitting a measurement start signal instructing measurement start of vibration to the mobile phone;
The mobile phone is
A telephone-side receiver (41) that receives the measurement start signal transmitted by the key-side transmitter;
A telephone-side vibration measuring unit (461) for starting vibration detection by the telephone-side vibration sensor based on the fact that the telephone-side receiving unit has received the measurement start signal;
The identity determination unit determines whether or not the vibration measured by the key side vibration measurement unit and the vibration measured by the telephone side vibration measurement unit are identical. In claim 2,
The electronic key is
Comprising the identity determination unit;
Furthermore, the key side transmission unit is a first key side transmission unit,
A second key side transmitter (34) for transmitting a response signal in response to the request signal to the in-vehicle device;
A transmission processing unit (33) for transmitting, from the second key side transmission unit, a mobile phone specifying signal that is determined by the identity determination unit and that specifies the mobile phone carried by the driver; ,
The in-vehicle device is
An in-vehicle device side receiving unit (23) for receiving the mobile phone specific signal transmitted by the second key side transmitting unit;
A driver specifying system comprising the storage unit and the driver specifying unit. In any one of Claims 1-3,
The identity determination unit includes a number of steps determined from a waveform representing vibration detected by the key-side vibration sensor during a data collection period and a number of steps determined from a waveform representing vibration detected by the telephone-side vibration sensor during the data collection period. A driver identification system characterized in that the identity is determined based on a comparison with. In any one of Claims 1-3,
The identity determination unit
In the waveform representing the vibration detected by the key-side vibration sensor, calculate the amplitude ratio of the other peak to the maximum peak in the data collection period
Calculate the amplitude ratio of the other peak to the maximum peak in the data collection period in the waveform representing the vibration detected by the telephone-side vibration sensor,
The driver identification system characterized by determining the said identity by comparing the magnitude | size of the said amplitude ratio about the said peak corresponding to each other determined based on the said mutual maximum peak. An electronic key (3) for locking and unlocking a door of the vehicle by communicating with an in-vehicle device mounted on the vehicle,
A key-side vibration sensor (36) for detecting vibration generated in the electronic key;
A vibration signal receiving unit (35) for receiving a signal transmitted from a mobile phone provided with a telephone-side vibration sensor and representing a vibration detected by the telephone-side vibration sensor;
An identity determination unit (372) that determines whether or not the vibration detected by the key-side vibration sensor and the vibration detected by the telephone-side vibration sensor received by the vibration signal receiving unit are identical. An electronic key characterized by that.

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