Portable terminal, emergency report system, and emergency report method

Abstract

To provide technology capable of suppressing that a portable terminal erroneously performs an emergency report to a report destination when a vehicle is not abnormal.SOLUTION: A portable terminal comprises: an acquisition unit which acquires first vehicle information from an on-vehicle device before it is determined that abnormal disconnection occurs in communication connection between the on-vehicle device and the portable terminal and acquires second vehicle information from the portable terminal when it is determined that the abnormal disconnection occurs; and a control unit which determines whether or not to perform an emergency report from the portable terminal to a report destination on the basis of the first vehicle information and the second vehicle information.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a mobile terminal, an emergency call system, and an emergency call method. [Background technology]

[0002] Various technologies have been proposed for a mobile terminal that communicates with an on-board device mounted on a vehicle by a projection function such as CarPlay (registered trademark). For example, Patent Document 1 proposes a technology in which, when a mobile terminal connected to a saddle-type vehicle by short-range wireless communication determines that there is a difference between sensor information of the saddle-type vehicle and sensor information of the mobile terminal, the mobile terminal determines that the saddle-type vehicle has fallen over and reports the same to a reporting destination such as a server. With such a technology, even if the saddle-type vehicle is unable to communicate with the server, it is possible to make an emergency report to the server from the mobile terminal and to reduce the processing load on the server. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-148597 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above technology, if there is a difference between the sensor information, the mobile terminal determines that the vehicle is abnormal and sends an emergency call to the reporting destination, without considering whether the communication connection between the mobile terminal and the vehicle such as a saddle-type vehicle has been cut off. However, even if the vehicle is not abnormal, there may be a difference between the sensor information due to some cause such as a signal synchronization error, and in such a case, there is a problem that the emergency call is sent erroneously to the reporting destination such as a server.

[0005] Therefore, the present disclosure has been made in consideration of the above-mentioned problems, and aims to provide technology that can prevent a mobile terminal from mistakenly making an emergency call to a call destination when there is no abnormality in the vehicle. [Means for solving the problem]

[0006] The mobile terminal of the present disclosure is a mobile terminal capable of communicating with an in-vehicle device mounted on a vehicle, and is equipped with an acquisition unit that acquires first vehicle information regarding the vehicle from the in-vehicle device before it is determined that an abnormal disconnection has occurred in the communication connection between the in-vehicle device and the mobile terminal, and acquires second vehicle information regarding the vehicle from the mobile terminal when it is determined that an abnormal disconnection has occurred, and a control unit that determines whether to make an emergency call from the mobile terminal to a destination based on the first vehicle information and the second vehicle information. Effect of the Invention

[0007] According to the present disclosure, the acquisition unit acquires the first vehicle information before it is determined that an abnormal disconnection has occurred, and acquires the second vehicle information when it is determined that an abnormal disconnection has occurred, and the control unit determines whether to make an emergency call from the mobile terminal to the call destination based on the first vehicle information and the second vehicle information. With this configuration, it is possible to prevent the mobile terminal from erroneously making an emergency call to the call destination when there is no abnormality in the vehicle. [Brief description of the drawings]

[0008] [Figure 1] 1 is a block diagram showing a configuration of an emergency call system according to a first embodiment. [Diagram 2] 4 is a flowchart showing the operation of the emergency call system according to the first embodiment. [Diagram 3] 5 is a flowchart showing the operation of the mobile terminal according to the first embodiment. [Figure 4] 13 is a flowchart showing the operation of a mobile terminal according to Modification 1. [Diagram 5] 13 is a flowchart showing the operation of the emergency call system according to the third modification. [Figure 6]FIG. 13 is a block diagram showing a hardware configuration of a driving assistance device according to another modified example. [Figure 7] FIG. 13 is a block diagram showing a hardware configuration of a driving assistance device according to another modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] <Embodiment 1> 1 is a block diagram showing the configuration of an emergency call system according to the present embodiment 1. The emergency call system includes an in-vehicle device 1 mounted on a vehicle 41, and a mobile terminal 3 capable of communicating with the in-vehicle device 1. As will be described below, this emergency call system is capable of making an emergency call to a server 5, which is a call destination, when an abnormality occurs in the vehicle 41, for example.

[0010] <On-board unit 1 and DMS 2> The vehicle-mounted device 1 is, for example, a head unit of an in-vehicle infotainment system, and is connected to a DMS (driver monitoring system) 2. The DMS 2 includes a camera 2a and a microphone 2b. The DMS 2 determines whether the occupants of the vehicle 41 are in a normal state, for example, whether the driver is not falling asleep and is able to drive, based on the images of the occupants of the vehicle 41 captured by the camera 2a and the voices inside the vehicle 41 captured by the microphone 2b.

[0011] The vehicle-mounted device 1 includes a communication unit 1a and a sensor 1b.

[0012] The communication unit 1a communicates with a mobile terminal 3 on which a projection function such as CarPlay and Android Auto is executed. For communication between the communication unit 1a and the mobile terminal 3, at least one of wireless communication such as Bluetooth (registered trademark) and Wi-Fi (registered trademark) and wired communication such as USB (Universal Serial Bus) is used. For convenience, in the following description, the communication unit 1a's reporting, transmission, reception and communication may be described as the in-vehicle device 1's reporting, transmission, reception and communication.

[0013] The communication unit 1a not only communicates with the mobile terminal 3, but also communicates with the server 5 using, for example, a mobile communication network. Although a configuration in which the communication unit 1a communicates with the server 5 is not essential, in the present embodiment 1, a configuration in which the communication unit 1a communicates with the server 5 will be mainly described.

[0014] The sensor 1b includes at least one of a GNSS receiver, a vehicle speed sensor, an acceleration sensor, a gyro sensor, a temperature sensor, a vibration sensor, and a vehicle distance radar. The sensor 1b configured in this manner acquires (detects) at least one of the following information as sensor information: the position, speed, acceleration, angular velocity, temperature, vibration, and vehicle distance from the vehicle ahead of the vehicle 41. The sensor 1b may include a sensor installed at the time of shipment of the vehicle-mounted device 1, or may include a sensor added by a user after shipment of the vehicle-mounted device 1.

[0015] Based on the sensor information acquired by the sensor 1b, the vehicle-mounted device 1 determines, for example, whether the vehicle 41 has deviated from the lane, whether the speed of the vehicle 41 has changed suddenly, whether the inter-vehicle distance of the vehicle 41 is small, and whether an accident or breakdown has occurred in the vehicle 41.

[0016] The vehicle-mounted device 1 judges whether or not the vehicle 41 is abnormal based on the judgment result in the DMS 2 and the judgment result in the vehicle-mounted device 1. For example, the vehicle-mounted device 1 judges that the vehicle 41 is abnormal when the occupant is not in a normal state, when the vehicle 41 deviates from the lane, when the speed of the vehicle 41 changes suddenly, when the inter-vehicle distance of the vehicle 41 is small, or when an accident or a breakdown occurs in the vehicle 41. When the vehicle-mounted device 1 judges that the vehicle 41 is abnormal, it makes an emergency report from the communication unit 1a to the server 5, or outputs a sound and an image for calling the attention of the occupant of the vehicle 41 from a speaker and a display device (not shown).

[0017] Furthermore, when the vehicle-mounted device 1 is communicating with the mobile terminal 3, the vehicle-mounted device 1 sequentially transmits sensor information to the mobile terminal 3 as first vehicle information related to the vehicle 41. Note that the first vehicle information is not limited to sensor information. The vehicle-mounted device 1 may include the DMS 2, or a component provided in one of the vehicle-mounted device 1 and the DMS 2 may be provided in the other.

[0018] <Mobile device 3> The mobile terminal 3 includes a communication unit 3a, a sensor 3b, and a control unit 3c. In the following, a case will be described in which the communication unit 3a and the sensor 3b are included in the concept of an acquisition unit, but for example, an interface of the communication unit 3a and an interface of the sensor 3b may be included in the concept of an acquisition unit.

[0019] The communication unit 3a communicates with the server 5 using a mobile communication network. In the following description, for convenience, the communication unit 3a's reporting, transmission, reception, and communication may be described as the mobile terminal 3's reporting, transmission, reception, and communication, respectively.

[0020] The communication unit 3a not only communicates with the server 5, but also communicates with the communication unit 1a of the vehicle-mounted device 1 when, for example, the projection function is being executed.

[0021] In the present embodiment 1, when the communication connection between the vehicle-mounted device 1 and the portable terminal 3 is normally disconnected by a user operation or the like, the vehicle-mounted device 1 notifies the portable terminal 3 of the end of communication. When the communication connection is disconnected before the vehicle-mounted device 1 notifies the portable terminal 3 of the end of communication, the communication unit 3a determines that an abnormal disconnection has occurred. Note that the determination of the occurrence of an abnormal disconnection is not limited to this, and for example, the control unit 3c may determine the occurrence of an abnormal disconnection.

[0022] The communication unit 3a acquires (receives) the first vehicle information from the in-vehicle device 1 before it is determined that an abnormal disconnection has occurred in the communication connection between the in-vehicle device 1 and the mobile terminal 3. Since the in-vehicle device 1 sequentially transmits the first vehicle information, the mobile terminal 3 can determine whether or not an abnormality has occurred in the vehicle 41 based on the first vehicle information, similar to the in-vehicle device 1, before an abnormal disconnection occurs in the communication connection between the in-vehicle device 1 and the mobile terminal 3. In particular, when the first vehicle information includes information on the distance between vehicles used in ADAS (Advanced Driver-Assistance Systems), the accuracy of this determination can be improved.

[0023] When it is determined that an abnormal disconnection has occurred in the communication connection between the in-vehicle device 1 and the mobile terminal 3, the sensor 3b acquires second vehicle information regarding the vehicle 41. For example, the second vehicle information includes information on the location of the mobile terminal 3 as information on the location of the vehicle 41.

[0024] The second vehicle information may be the same type of information as the first vehicle information, or may be a different type of information from the first vehicle information as long as it can be compared with the first vehicle information. For example, if the first vehicle information is information on the speed of the vehicle 41, the second vehicle information may be information on the position or acceleration of the vehicle 41 that is converted to the speed of the vehicle 41 and can be compared with the first vehicle information. Also, for example, if the first vehicle information is information on the vibration of the vehicle 41, the second vehicle information may be information on the acceleration of the vehicle 41 that is converted to the vibration of the vehicle 41 and can be compared with the first vehicle information.

[0025] The control unit 3c determines whether to make an emergency call from the mobile terminal 3 to the server 5 based on the first vehicle information of the in-vehicle device 1 and the second vehicle information of the mobile terminal 3. For example, when the vehicle 41 suddenly stops due to an abnormality such as an accident, the traveling state of the vehicle 41 changes suddenly, and it is considered that the difference between the first vehicle information and the second vehicle information becomes large. Therefore, for example, when the first vehicle information and the second vehicle information include information on the speed of the vehicle 41 and the speed of the second vehicle information has changed from the speed of the first vehicle information by a threshold value or more, the control unit 3c determines to make an emergency call from the communication unit 3a of the mobile terminal 3 to the server 5.

[0026] When it is determined that an emergency call should be made, the control unit 3c controls the communication unit 3a so that the communication unit 3a makes an emergency call to the server 5. When it is determined that an emergency call should be made, the control unit 3c may output a sound and an image for calling attention from a speaker and a display device (not shown) of the mobile terminal 3.

[0027] As described above, in the first embodiment, when it is determined that an abnormal disconnection has occurred in the communication connection between the vehicle-mounted device 1 and the mobile terminal 3, the sensor 3b of the mobile terminal 3 acquires the second vehicle information. As a result, the operation of determining whether or not to make an emergency call using the second vehicle information is performed after it is determined that an abnormal disconnection has occurred in the communication connection between the vehicle-mounted device 1 and the mobile terminal 3. Therefore, even if the difference between the first vehicle information and the second vehicle information becomes large due to some cause such as signal synchronization deviation, it is possible to suppress the determination that an emergency call is to be made unless an abnormal disconnection occurs due to an abnormality such as an accident that requires an emergency call. In other words, the control unit 3c substantially determines whether or not to make an emergency call based on both the determination result of the occurrence of an abnormal disconnection and the determination result based on the difference between the first vehicle information and the second vehicle information, so that it is possible to suppress the emergency call from being erroneously made to the server 5.

[0028] Here, it is assumed that the control unit 3c is configured to determine whether or not to make an emergency call based only on the determination result of the occurrence of an abnormal disconnection. Even if there is no abnormality such as an accident that requires an emergency call, the control unit 3c may determine that an abnormal disconnection has occurred due to, for example, removal of the USB, poor contact of the USB, radio interference, and power cutoff of the mobile terminal 3, and may determine to make an emergency call. In the first embodiment, the control unit 3c determines whether or not to make an emergency call based on both the determination result of the occurrence of an abnormal disconnection and the determination result based on the difference between the first vehicle information and the second vehicle information, so that it is possible to suppress erroneous making of an emergency call to the server 5.

[0029] The sensor 3b of the mobile terminal 3 does not acquire the second vehicle information all the time, but acquires the second vehicle information when it is determined that an abnormal disconnection has occurred in the communication connection between the in-car device 1 and the mobile terminal 3. This is expected to reduce the power consumption required to acquire the second vehicle information.

[0030] <Operation> FIG. 2 is a flowchart showing the operation of the emergency call system according to the first embodiment.

[0031] In step S1, the vehicle-mounted device 1 determines whether or not the vehicle-mounted device 1 can communicate with the server 5. If it is determined that the vehicle-mounted device 1 can communicate with the server 5, the process proceeds to step S2, and if it is determined that the vehicle-mounted device 1 cannot communicate with the server 5, the process proceeds to step S4.

[0032] In step S2, the vehicle-mounted device 1 judges whether or not there is an abnormality in the vehicle 41 based on the judgment result in the DMS 2 and the judgment result based on the sensor information in the vehicle-mounted device 1. If it is judged that there is an abnormality in the vehicle 41, the process proceeds to step S3, and if it is judged that there is no abnormality in the vehicle 41, the process of step S2 is performed again.

[0033] In step S3, the vehicle-mounted device 1 makes an emergency call to the server 5. After that, the operation in FIG. 2 ends.

[0034] In step S4, the vehicle-mounted device 1 determines whether or not the vehicle-mounted device 1 is communicatively connected to the portable terminal 3. If it is determined that the vehicle-mounted device 1 is communicatively connected to the portable terminal 3, the process proceeds to step S5, and if it is determined that the vehicle-mounted device 1 is not communicatively connected to the portable terminal 3, the process of step S4 is performed again. Note that if the number of times the process of step S4 has been performed consecutively exceeds a threshold value, the operation of FIG. 2 may end.

[0035] In step S5, the sensor 1b of the vehicle-mounted device 1 acquires the first vehicle information, and the communication unit 1a of the vehicle-mounted device 1 transmits the first vehicle information acquired by the sensor 1b to the mobile terminal 3.

[0036] In step S6, the vehicle-mounted device 1 judges whether or not there is an abnormality in the vehicle 41 based on the judgment result in the DMS 2 and the judgment result based on the sensor information in the vehicle-mounted device 1. If it is judged that there is an abnormality in the vehicle 41, the process proceeds to step S7, and if it is judged that there is no abnormality in the vehicle 41, the process returns to step S4.

[0037] In step S7, the vehicle-mounted device 1 requests the mobile terminal 3 to make an emergency call.

[0038] In step S8, the mobile terminal 3 determines whether or not the mobile terminal 3 is capable of communicating with the server 5. If it is determined that the mobile terminal 3 is capable of communicating with the server 5, the process proceeds to step S9, and if it is determined that the mobile terminal 3 is not capable of communicating with the server 5, the operation in FIG. 2 ends.

[0039] In step S9, the mobile terminal 3 makes an emergency call to the server 5. After that, the operation in FIG.

[0040] FIG. 3 is a flowchart showing the operation of the mobile terminal 3 according to the first embodiment.

[0041] In step S21, the mobile terminal 3 determines whether or not the mobile terminal 3 is capable of communicating with the server 5. If it is determined that the mobile terminal 3 is capable of communicating with the server 5, the process proceeds to step S22, and if it is determined that the mobile terminal 3 is not capable of communicating with the server 5, the operation in FIG. 3 ends.

[0042] In step S22, the communication unit 3a determines whether or not the portable terminal 3 is communicatively connected to the vehicle-mounted device 1. If it is determined that the portable terminal 3 is communicatively connected to the vehicle-mounted device 1, the process proceeds to step S23, and if it is determined that the portable terminal 3 is not communicatively connected to the vehicle-mounted device 1, the process of step S22 is performed again.

[0043] In step S23, the communication unit 3a receives the first vehicle information from the vehicle-mounted device 1.

[0044] In step S24, the communication unit 3a determines whether or not an abnormal disconnection has occurred in the communication connection between the vehicle-mounted device 1 and the portable terminal 3. If it is determined that an abnormal disconnection has occurred, the process proceeds to step S25, and if it is determined that an abnormal disconnection has not occurred, the process returns to step S22.

[0045] In step S25, the sensor 3b acquires the second vehicle information.

[0046] In step S26, the control unit 3c determines, based on the first vehicle information and the second vehicle information, whether or not to make an emergency call from the mobile terminal 3 to the server 5. If it is determined that an emergency call is to be made from the mobile terminal 3 to the server 5, the process proceeds to step S27, and if it is determined that an emergency call is not to be made from the mobile terminal 3 to the server 5, the process returns to step S22.

[0047] In step S27, the control unit 3c controls the communication unit 3a so that an emergency call is made from the communication unit 3a to the server 5. As a result, the mobile terminal 3 makes an emergency call to the server 5. Thereafter, the operation in FIG. 3 ends.

[0048] <Summary of the first embodiment> According to the mobile terminal 3 of the first embodiment as described above, the communication unit 3a acquires the first vehicle information before it is determined that an abnormal disconnection has occurred, the sensor 3b acquires the second vehicle information when it is determined that an abnormal disconnection has occurred, and the control unit 3c determines whether or not to make an emergency call from the mobile terminal 3 to the server 5 based on the first vehicle information and the second vehicle information. This makes it possible to prevent the mobile terminal 3 from erroneously making an emergency call to the server 5 when there is no abnormality in the vehicle 41, and is also expected to reduce power consumption required to acquire the second vehicle information.

[0049] <Variation 1> In the present first modification, the second vehicle information includes information related to the traveling of the vehicle 41, and the information includes at least one of the position of the vehicle 41, the speed of the vehicle 41, and the acceleration of the vehicle 41.

[0050] Fig. 4 is a flowchart showing the operation of the mobile terminal 3 according to the present modified example 1. The operation in Fig. 4 is the same as the operation in Fig. 3 with step S31 added, so the following mainly describes step S31.

[0051] In step S31 after step S26, the control unit 3c determines whether the vehicle 41 is traveling or not based on the second vehicle information including information related to the traveling of the vehicle 41. For example, the control unit 3c calculates the speed of the vehicle 41 based on the second vehicle information, and determines that the vehicle 41 is traveling when the speed is equal to or greater than a threshold. Note that the threshold is, for example, a speed approximately equal to the speed of a pedestrian. If it is determined that the vehicle 41 is traveling, the process returns to step S22, and if it is determined that the vehicle 41 is not traveling, the process proceeds to step S27.

[0052] According to this configuration, even if the control unit 3c determines based on the first vehicle information and the second vehicle information that an emergency call should be made from the mobile terminal 3 to the server 5, if it determines based on the second vehicle information that the vehicle 41 is traveling, it determines not to make an emergency call. This makes it possible to prevent the mobile terminal 3 from erroneously making an emergency call to the server 5, even if a large difference between the first vehicle information and the second vehicle information occurs due to, for example, removal of the USB and some other cause such as signal synchronization error.

[0053] <Variation 2> The vehicle-mounted device 1 according to the first embodiment is configured to include the sensor information acquired by the sensor 1b of the vehicle 41 in the first vehicle information. In contrast, the vehicle-mounted device 1 according to the present modification 2 is configured to include the sensor information acquired by the sensor 1b of the vehicle 41 and the monitor information acquired by the DMS 2 in the first vehicle information. The monitor information includes at least one of an image of an occupant and a sound inside the vehicle 41.

[0054] According to this configuration, the mobile terminal 3 can determine whether the occupants of the vehicle 41 are in a normal state based on the first vehicle information, thereby improving the accuracy of the determination as to whether to make an emergency call. The emergency call may include a report of the sensor information and monitor information included in the first vehicle information. This allows the server 5 to check the details of the state of the vehicle 41.

[0055] <Modification 3> In the second modification, the in-vehicle device 1 sequentially transmits the first vehicle information including the sensor information and the monitor information to the mobile terminal 3. However, since the data amount of the monitor information is relatively large, it is considered that the communication amount from the in-vehicle device 1 to the mobile terminal 3 becomes somewhat large. In contrast, the third modification makes it possible to reduce the communication amount.

[0056] Fig. 5 is a flowchart showing the operation of the emergency call system according to Modification 3. The operation in Fig. 5 is the same as the operation in Fig. 2 except that step S5 is changed to steps S11 to S13, so steps S11 to S13 will be mainly described below.

[0057] If it is determined in step S4 that the in-vehicle device 1 is connected to the mobile terminal 3 for communication, then in step S11, the in-vehicle device 1 determines whether or not the vehicle 41 is traveling abnormally based on the determination results in the DMS 2 and the determination results in the in-vehicle device 1. For example, the in-vehicle device 1 determines that the vehicle 41 is traveling abnormally when there is a high possibility that the vehicle 41 will become abnormal, such as when the vehicle 41 deviates from the lane to a certain extent, when the speed of the vehicle 41 has changed to a certain extent, or when the inter-vehicle distance of the vehicle 41 is relatively small. If it is determined that the vehicle 41 is traveling abnormally, the process proceeds to step S12, and if it is determined that the vehicle 41 is traveling abnormally, the process proceeds to step S13.

[0058] In step S12, the vehicle-mounted device 1 acquires first vehicle information including sensor information and monitor information, and transmits the first vehicle information to the mobile terminal 3. Then, the process proceeds to step S6. In step S13, the vehicle-mounted device 1 acquires first vehicle information including sensor information but not monitor information, and transmits the first vehicle information to the mobile terminal 3. Then, the process proceeds to step S6.

[0059] According to this configuration, the in-vehicle device 1 includes the sensor information and the monitor information in the first vehicle information when it is determined that the vehicle 41 is traveling abnormally, and includes the sensor information in the first vehicle information when it is determined that the vehicle 41 is traveling normally. Therefore, when it is determined that the vehicle 41 is traveling normally, the amount of communication from the in-vehicle device 1 to the mobile terminal 3 can be reduced.

[0060] <Other Modifications> The acquisition unit including the communication unit 3a and the sensor 3b in FIG. 1 and the control unit 3c are hereinafter referred to as "acquisition unit, etc." The acquisition unit, etc. are realized by a processing circuit 81 shown in FIG. 6. That is, the processing circuit 81 includes an acquisition unit that acquires first vehicle information from the vehicle-mounted device 1 before it is determined that an abnormal disconnection has occurred in the communication connection between the vehicle-mounted device 1 and the mobile terminal 3, and acquires second vehicle information from the mobile terminal 3 when it is determined that an abnormal disconnection has occurred, and a control unit that determines whether or not to make an emergency call from the mobile terminal 3 to a call destination based on the first vehicle information and the second vehicle information. The processing circuit 81 may be implemented with dedicated hardware, or may be implemented with a processor that executes a program stored in a memory. Examples of the processor include a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, and a DSP (Digital Signal Processor).

[0061] When the processing circuit 81 is a dedicated hardware, the processing circuit 81 corresponds to, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination of these. Each function of the acquisition unit and the like may be realized by a circuit in which the processing circuit is distributed, or the functions of each unit may be realized by a single processing circuit.

[0062] When the processing circuit 81 is a processor, the functions of the acquisition unit and the like are realized by a combination with software and the like. The software and the like includes, for example, software, firmware, or software and firmware. The software and the like are described as a program and stored in a memory. As shown in FIG. 7, the processor 82 applied to the processing circuit 81 realizes the functions of each unit by reading and executing a program stored in the memory 83. That is, the mobile terminal 3 includes a memory 83 for storing a program that, when executed by the processing circuit 81, results in the execution of a step of acquiring first vehicle information from the vehicle-mounted device 1 before it is determined that an abnormal disconnection has occurred in the communication connection between the vehicle-mounted device 1 and the mobile terminal 3, acquiring second vehicle information from the mobile terminal 3 when it is determined that an abnormal disconnection has occurred, and a step of determining whether or not to make an emergency call from the mobile terminal 3 to a call destination based on the first vehicle information and the second vehicle information. In other words, this program can be said to cause a computer to execute a procedure or method of the acquisition unit and the like. Here, the memory 83 may be, for example, a non-volatile or volatile semiconductor memory such as a Random Access Memory (RAM), a Read Only Memory (ROM), a flash memory, an Erasable Programmable Read Only Memory (EPROM), an Electrically Erasable Programmable Read Only Memory (EEPROM), an HDD (Hard Disk Drive), a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, a DVD (Digital Versatile Disc), a drive device for any of these, or any storage medium to be used in the future.

[0063] The above describes a configuration in which each function of the acquisition unit, etc. is realized either by hardware or software, etc. However, the present invention is not limited to this, and a configuration in which a part of the acquisition unit, etc. is realized by dedicated hardware and another part is realized by software, etc. For example, the acquisition unit can be realized by a processing circuit 81 as dedicated hardware, and the other functions can be realized by the processing circuit 81 as a processor 82 reading and executing a program stored in a memory 83.

[0064] As described above, the processing circuitry 81 can realize each of the above-mentioned functions by hardware, software, or a combination of these.

[0065] It should be noted that the embodiments and modifications may be freely combined, and the embodiments and modifications may be modified or omitted as appropriate.

[0066] Various aspects of the present disclosure are summarized below as appendices.

[0067] (Appendix 1) A mobile terminal capable of communicating with an on-board device mounted in a vehicle, an acquisition unit that acquires first vehicle information related to the vehicle from the in-vehicle device before it is determined that an abnormal disconnection has occurred in the communication connection between the in-vehicle device and the mobile terminal, and acquires second vehicle information related to the vehicle from the mobile terminal when it is determined that the abnormal disconnection has occurred; a control unit that determines whether to make an emergency call from the mobile terminal to a call destination based on the first vehicle information and the second vehicle information; A mobile terminal comprising:

[0068] (Appendix 2) 2. A mobile terminal according to claim 1, The mobile terminal determines that the abnormal disconnection has occurred when the communication connection is disconnected before the end of communication is notified to the mobile terminal from the vehicle-mounted device.

[0069] (Appendix 3) A mobile terminal according to claim 1 or 2, The second vehicle information includes information regarding the traveling of the vehicle, The control unit is A mobile terminal that determines not to make the emergency call even if it determines, based on the first vehicle information and the second vehicle information, that the vehicle is moving based on the second vehicle information.

[0070] (Appendix 4) An emergency call system comprising the mobile terminal according to any one of Supplementary Note 1 to Supplementary Note 3 and the vehicle-mounted device.

[0071] (Appendix 5) 5. The emergency call system according to claim 4, The vehicle-mounted device includes: An emergency call system, wherein the first vehicle information includes sensor information acquired by a sensor of the vehicle and monitor information acquired by a driver monitoring system of the vehicle.

[0072] (Appendix 6) 6. The emergency call system according to claim 5, An emergency call system, wherein the emergency call includes a call of the sensor information and the monitor information contained in the first vehicle information.

[0073] (Appendix 7) 11. The emergency call system according to claim 5 or 6, The vehicle-mounted device includes: When it is determined that the traveling of the vehicle is abnormal, the sensor information and the monitor information are included in the first vehicle information; When it is determined that the vehicle's traveling is not abnormal, the emergency call system includes the sensor information in the first vehicle information without including the monitor information in the first vehicle information.

[0074] (Appendix 8) An emergency call method performed by a mobile terminal capable of communicating with an in-vehicle device mounted in a vehicle, comprising: acquiring first vehicle information about the vehicle from the vehicle-mounted device before it is determined that an abnormal disconnection has occurred in the communication connection between the vehicle-mounted device and the mobile terminal, and acquiring second vehicle information about the vehicle from the mobile terminal when it is determined that the abnormal disconnection has occurred; An emergency call method comprising: determining whether or not to make an emergency call from the mobile terminal to a call destination based on the first vehicle information and the second vehicle information. [Explanation of symbols]

[0075] 1 Vehicle-mounted device, 1b, 3b sensors, 2 DMS, 3 mobile terminal, 3a communication unit, 3c control unit, 5 server, 41 vehicle.

Claims

1. A mobile terminal capable of communicating with an on-board device mounted in a vehicle, an acquisition unit that acquires first vehicle information related to the vehicle from the in-vehicle device before it is determined that an abnormal disconnection has occurred in the communication connection between the in-vehicle device and the mobile terminal, and acquires second vehicle information related to the vehicle from the mobile terminal when it is determined that the abnormal disconnection has occurred; a control unit that determines whether to make an emergency call from the mobile terminal to a call destination based on the first vehicle information and the second vehicle information; A mobile terminal comprising:

2. The mobile terminal according to claim 1, The mobile terminal determines that the abnormal disconnection has occurred when the communication connection is disconnected before the end of communication is notified to the mobile terminal from the vehicle-mounted device.

3. 2. The mobile terminal according to claim 1, The second vehicle information includes information regarding the traveling of the vehicle, The control unit is A mobile terminal that determines not to make the emergency call even if it determines that the emergency call should be made based on the first vehicle information and the second vehicle information, if it determines that the vehicle is moving based on the second vehicle information.

4. An emergency call system comprising the mobile terminal according to claim 1 and the vehicle-mounted device.

5. The emergency call system according to claim 4, The vehicle-mounted device includes: An emergency call system, wherein the first vehicle information includes sensor information acquired by a sensor of the vehicle and monitor information acquired by a driver monitoring system of the vehicle.

6. 6. The emergency call system according to claim 5, An emergency call system, wherein the emergency call includes a call of the sensor information and the monitor information included in the first vehicle information.

7. 6. The emergency call system according to claim 5, The vehicle-mounted device includes: When it is determined that the traveling of the vehicle is abnormal, the sensor information and the monitor information are included in the first vehicle information; When it is determined that the vehicle is not traveling abnormally, the monitor information is not included in the first vehicle information, but the sensor information is included in the first vehicle information.

8. An emergency call method performed by a mobile terminal capable of communicating with an in-vehicle device mounted in a vehicle, comprising: acquiring first vehicle information about the vehicle from the vehicle-mounted device before it is determined that an abnormal disconnection has occurred in the communication connection between the vehicle-mounted device and the mobile terminal, and acquiring second vehicle information about the vehicle from the mobile terminal when it is determined that the abnormal disconnection has occurred; an emergency call method for determining whether or not to make an emergency call from the mobile terminal to a call destination based on the first vehicle information and the second vehicle information;

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