In-vehicle device, communication control method, and communication system

Abstract

An in-vehicle device mounted on a vehicle, the in-vehicle device being provided with: an acquisition unit that acquires vehicle information relating to the vehicle and measurement result information including a measurement result of a measurement target that is related to the in-vehicle device and affects transmission of the vehicle information; and a communication unit that transmits the vehicle information and the measurement result information acquired by the acquisition unit to a management device.

Description

Technical Field

[0001] The present disclosure relates to a vehicle-mounted device, a communication control method and a communication system.

[0002] This application claims the benefit of priority based on Japanese patent application No. 2022-162107, filed on October 7, 2022, the disclosure of which is incorporated herein in its entirety. Background Art

[0003] Japanese Patent Publication No. 4107238 (Patent Document 1) discloses a vehicle communication system as follows. That is, the vehicle communication system performs communication between each vehicle-mounted terminal device installed in a plurality of vehicles and an information center via a network, and is characterized by comprising the following steps: periodically sending vehicle position information, vehicle cumulative driving distance information, etc. as information of actual driving environment from each vehicle-mounted terminal device to the information center; sending fault occurrence information and diagnostic information from the vehicle-mounted terminal device of a vehicle having a fault to the information center; extracting vehicles similar to the vehicle having the fault and manufacturing conditions, information of actual driving environment as environmental conditions, and vehicle environment information from a vehicle information database at the information center; requesting the extracted vehicle to send diagnostic information to the information center; sending diagnostic information from the vehicle-mounted terminal device of the extracted vehicle to the information center; and associating and analyzing the diagnostic information of the extracted vehicle and the position information of the extracted vehicle with the weather information, terrain information, etc. of the location at the information center.

[0004] Prior Art Literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent No. 4107238 Summary of the invention

[0007] The vehicle-mounted device disclosed in the present invention is mounted on a vehicle, and comprises: an acquisition unit, which acquires vehicle information and measurement result information, wherein the vehicle information is related to the vehicle, and the measurement result information includes a measurement result of a measurement object that is related to the vehicle-mounted device and affects the sending of the vehicle information; and a communication unit, which sends the vehicle information and the measurement result information acquired by the acquisition unit.

[0008] An aspect of the present disclosure can be implemented not only as an on-vehicle device having such a characteristic processing unit, but also as a program for causing a computer to execute the steps of the characteristic processing. Furthermore, an aspect of the present disclosure can be implemented as a semiconductor integrated circuit that implements part or all of the on-vehicle device. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a diagram showing the configuration of a communication system according to an embodiment of the present disclosure.

[0010] Figure 2 It is a diagram showing the configuration of a vehicle-mounted device according to an embodiment of the present disclosure.

[0011] Figure 3 It is a diagram showing an example of the configuration of a vehicle information acquisition unit in the vehicle-mounted device according to the embodiment of the present disclosure.

[0012] Figure 4 It is a diagram showing another example of the configuration of the vehicle information acquisition unit in the vehicle-mounted device according to the embodiment of the present disclosure.

[0013] Figure 5 This is a diagram showing an example of a CAN table stored in the vehicle-mounted device according to the embodiment of the present disclosure.

[0014] Figure 6 It is a diagram showing an example of the configuration of a measurement result information acquisition unit in the vehicle-mounted device according to the embodiment of the present disclosure.

[0015] Figure 7 This is a diagram for explaining a process of calculating the ratio of the power supply time per unit time performed by the vehicle-mounted device according to the embodiment of the present disclosure.

[0016] Figure 8 This is a diagram showing an example of measurement result information transmitted by the vehicle-mounted device according to the embodiment of the present disclosure.

[0017] Fig. 9 It is a diagram showing the configuration of a management device according to an embodiment of the present disclosure.

[0018] Fig.10 This is a diagram showing an example of setting information stored in the management device according to the embodiment of the present disclosure.

[0019] Fig.11 This is a diagram showing another example of the setting information stored in the management device according to the embodiment of the present disclosure.

[0020] Fig.12 This is a diagram showing an example of a theoretical table stored in the management device according to the embodiment of the present disclosure.

[0021] Fig.13 This is a diagram showing an example of a collection performance table stored in the management device according to the embodiment of the present disclosure.

[0022] Fig.14 This is a flowchart that defines the operation procedure when the vehicle-mounted device according to the embodiment of the present disclosure transmits vehicle information and measurement result information to the management device.

[0023] Fig.15It is a diagram showing the process sequence of the vehicle-mounted device and the management device in the communication system according to the embodiment of the present disclosure.

[0024] Fig.16 This is a diagram showing the sequence of the update process of the setting information in the communication system according to the embodiment of the present disclosure.

[0025] Fig.17 This is a diagram showing an example of a collection performance table stored in Modification 1 of the management device according to the embodiment of the present disclosure.

[0026] Fig.18 It is a diagram showing the configuration of Modification 2 of the vehicle-mounted device according to the embodiment of the present disclosure.

[0027] Fig.19 This is a diagram showing an example of a collection performance table stored in Modification 2 of the management device according to the embodiment of the present disclosure.

[0028] Fig. 20 It is a diagram showing the sequence of setting processing in Modification 3 of the communication system according to the embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] Conventionally, technologies for detecting abnormalities related to vehicles have been developed.

[0030] [Problems to be Solved by the Present Disclosure]

[0031] A technology that surpasses the technology described in Patent Document 1 and can improve the accuracy of detecting abnormalities related to a vehicle is desired.

[0032] The present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to provide an in-vehicle device, a communication control method, and a communication system capable of improving the accuracy of detecting abnormalities related to a vehicle.

[0033] [Effects of the present disclosure]

[0034] According to the present disclosure, it is possible to improve the accuracy of detecting abnormalities related to a vehicle.

[0035] [Description of Embodiments of the Present Disclosure]

[0036] First, the contents of the embodiments of the present disclosure are listed and described.

[0037] (1) A vehicle-mounted device according to an embodiment of the present disclosure is mounted on a vehicle, and comprises: an acquisition unit for acquiring vehicle information and measurement result information, wherein the vehicle information is related to the vehicle, and the measurement result information includes a measurement result of a measurement object that is related to the vehicle-mounted device and affects the transmission of the vehicle information; and a communication unit for transmitting the vehicle information and the measurement result information acquired by the acquisition unit to a management device.

[0038] In this way, by sending the vehicle information and the measurement result information of the measurement object that affects the transmission of the vehicle information to the management device, the management device can grasp the situation in which the transmission of the vehicle information is affected, so that the abnormality related to the vehicle can be detected more accurately. Therefore, the detection accuracy of the abnormality related to the vehicle can be improved.

[0039] (2) In the above (1), the measurement result information may include a measurement result related to a power supply unit that supplies electric power in the vehicle.

[0040] With such a configuration, the management device can grasp the state of the power supply unit that affects the transmission of vehicle information, and thus can more accurately detect abnormalities related to the vehicle.

[0041] (3) In the above (2), the measurement result related to the power supply unit may include a ratio of time during which the power is supplied by the power supply unit per a predetermined unit time.

[0042] With such a configuration, the transmission status of the vehicle information can be more accurately understood based on the length of time that the power supply unit supplies power.

[0043] (4) In the above (2) or (3), the measurement result related to the power supply unit may include a predetermined number of activations of the power supply unit per unit time.

[0044] With such a configuration, the transmission status of the vehicle information can be more accurately understood based on the number of activations of the power supply unit.

[0045] (5) In any one of the above (1) to (4), the measurement result information may include a measurement result related to the communication quality between the communication unit and the management device.

[0046] With such a configuration, it is possible to more accurately grasp the transmission status of the vehicle information based on the communication quality between the communication unit and the management device.

[0047] (6) In any one of the above (1) to (5), the acquisition unit may acquire the vehicle information based on setting information transmitted from the management device.

[0048] With such a structure, even if the vehicle-mounted device is added to the vehicle after the vehicle leaves the factory, the vehicle information can be sent to the management device in the same manner as the vehicle-mounted device installed on the vehicle before leaving the factory. In addition, since the type of vehicle information to be sent can be set, for example, the location where the abnormality occurs can be easily determined.

[0049] (7) In the above (6), the communication unit can send version information indicating the version of the maintained setting information to the management device, and the communication unit can request the management device to send new setting information based on judgment information sent from the management device, and the judgment information indicates the judgment result of the version shown by the version information.

[0050] With such a configuration, for example, the latest setting information can be reflected in the transmission of vehicle information to the management device, and thus the management device can further improve the accuracy of detecting abnormalities related to the vehicle.

[0051] (8) In any one of (1) to (7) above, the acquisition unit may acquire the vehicle information based on setting information transmitted from another device different from the management device, and the communication unit may transmit the vehicle information acquired by the acquisition unit to the other device.

[0052] With such a configuration, for example, vehicle information requested by a vehicle user can be transmitted to a device other than the management device, thereby improving user convenience.

[0053] (9) The communication control method of an embodiment of the present disclosure may be a communication control method for a vehicle-mounted device mounted on a vehicle, the communication control method comprising the following steps: obtaining vehicle information and measurement result information, the vehicle information being related to the vehicle, the measurement result information including a measurement result of a measurement object that is related to the vehicle-mounted device and that affects the transmission of the vehicle information; and transmitting the obtained vehicle information and the measurement result information to a management device.

[0054] In this way, by sending the vehicle information and the measurement result information of the measurement object that affects the transmission of the vehicle information to the management device, the management device can grasp the situation in which the transmission of the vehicle information is affected, so that the abnormality related to the vehicle can be detected more accurately. Therefore, the detection accuracy of the abnormality related to the vehicle can be improved.

[0055] (10) The communication system of an embodiment of the present disclosure comprises: a vehicle-mounted device, mounted on a vehicle; and a management device, which detects an abnormality related to the vehicle, the vehicle-mounted device including: an acquisition unit, which acquires vehicle information and measurement result information, the vehicle information being related to the vehicle, the measurement result information including a measurement result of a measurement object that is related to the vehicle-mounted device and affects the transmission of the vehicle information; and a communication unit, which transmits the vehicle information and the measurement result information acquired by the acquisition unit to the management device, and the management device detects the abnormality based on the vehicle information and the measurement result information received from the communication unit.

[0056] In this way, by sending the vehicle information and the measurement result information of the measurement object that affects the transmission of the vehicle information to the management device, the management device can grasp the situation in which the transmission of the vehicle information is affected, so that the abnormality related to the vehicle can be detected more accurately. Therefore, the detection accuracy of the abnormality related to the vehicle can be improved.

[0057] The following drawings are used to illustrate the embodiments of the present disclosure. It should be noted that the same or corresponding parts in the drawings are marked with the same reference numerals and their descriptions are not repeated. In addition, at least a part of the embodiments described below can be arbitrarily combined.

[0058] [Communication System]

[0059] Figure 1 2 is a diagram showing the configuration of a communication system according to an embodiment of the present disclosure. Figure 1 The communication system 501 includes one or more vehicle-mounted devices 101 , a management device 201 , and a terminal device 301 . Each vehicle-mounted device 101 and the management device 201 can send and receive information via an external network 161 such as the Internet. The vehicle-mounted device 101 is mounted on the vehicle 10 .

[0060] The management device 201 and the terminal device 301 are used by, for example, an operator or an individual (hereinafter collectively referred to as a user) who manages the operation of a vehicle. The management device 201 is, for example, a server. The terminal device 301 is, for example, a communication terminal device such as a smartphone or a tablet.

[0061] The management device 201 receives vehicle information related to the corresponding vehicle 10 from one or more vehicle-mounted devices 101. The management device 201 transmits setting information indicating setting contents of the vehicle 10 related to the transmission of the vehicle information to the vehicle-mounted device 101. Then, the management device 201 detects abnormalities related to the vehicle 10, such as a malfunction of the vehicle 10, based on the vehicle information received from the vehicle-mounted device 101. It should be noted that the details of the setting information will be described later.

[0062] The vehicle-mounted device 101 transmits vehicle information related to the vehicle 10 including identification information of the vehicle 10 to the management device 201. The vehicle information includes information related to the travel of the vehicle 10, for example.

[0063] Specifically, the vehicle-mounted device 101 transmits, for example, the position information and vehicle speed information of the corresponding vehicle 10 to the management device 201. It should be noted that the vehicle information is not limited to the position information and vehicle speed information, but may also be driving control information such as brake operation in the vehicle 10. Furthermore, the vehicle information is not limited to information related to the travel of the vehicle 10, but may also be information indicating an image captured by a camera mounted on the vehicle 10 and information indicating measurement results of a sensor mounted on the vehicle 10.

[0064] [In-vehicle device]

[0065] Figure 2 2 is a diagram showing the configuration of a vehicle-mounted device according to an embodiment of the present disclosure. Figure 2 The in-vehicle device 101 is connected to a plurality of in-vehicle devices 111 via a CAN bus 51 compliant with the CAN (Controller Area Network) (registered trademark) standard, for example.

[0066] The in-vehicle equipment 111 includes, for example, an automatic driving ECU (Electronic Control Unit), an engine ECU, a TCU (Telematics Communication Unit), a sensor, a navigation device, a human-machine interface, a camera, and the like.

[0067] exist Figure 2 In the illustrated example, the in-vehicle device 101 is connected to a plurality of in-vehicle devices 111 , namely, in-vehicle devices 111A, 111B, and 111C.

[0068] The in-vehicle device 101 and the in-vehicle equipment 111 operate using electric power supplied from, for example, the battery 71 of the vehicle 10 .

[0069] The vehicle-mounted device 101 includes a first communication unit 11, a setting unit 12, an acquisition unit 13, a second communication unit 14, a power supply circuit 15, and a storage unit 16. The acquisition unit 13 includes a vehicle information acquisition unit 31 and a measurement result information acquisition unit 32. Part or all of the first communication unit 11, the setting unit 12, the acquisition unit 13, and the second communication unit 14 are implemented, for example, by a processing circuit (Circuitry) including one or more processors. The storage unit 16 is, for example, a non-volatile memory included in the above-mentioned processing circuit.

[0070] (First Department of Communications)

[0071] The first communication unit 11 communicates wirelessly with a wireless base station (not shown) in accordance with a communication method such as WiFi (registered trademark), LTE (Long Term Evolution) (registered trademark), or 5G, thereby communicating with the management device 201 via the external network 161. For example, the first communication unit 11 receives setting information sent from the management device 201 via the external network 161, and outputs the received setting information to the setting unit 12. It should be noted that the first communication unit 11 is not limited to a structure that communicates with the management device 201 via a wireless base station and an external network 161, and may also be a structure that communicates with the management device 201 via a wired line. In addition, the first communication unit 11 may also be a structure that communicates with the management device 201 via other vehicle-mounted devices.

[0072] (Vehicle Information Acquisition Department)

[0073] The vehicle information acquisition unit 31 acquires vehicle information related to the vehicle 10. The vehicle information acquisition unit 31 performs communication with one or more vehicle-mounted devices 111 in accordance with the CAN standard.

[0074] exist Figure 2 In the example shown, the vehicle information acquisition unit 31 is connected to the vehicle-mounted devices 111A, 111B, and 111C via three CAN buses 51, namely, CAN buses 51A, 51B, and 51C. Hereinafter, the CAN bus 51A is also referred to as "CAN1", the CAN bus 51B is also referred to as "CAN2", and the CAN bus 51C is also referred to as "CAN3".

[0075] It should be noted that the vehicle-mounted device 101 is not limited to the structure in which three CAN buses 51 are connected to the vehicle information acquisition unit 31 , and may be a structure in which one or more CAN buses 51 are connected.

[0076] Furthermore, the vehicle-mounted device 101 and each vehicle-mounted device 111 may be a structure for performing communications in compliance with standards such as CAN FD (CAN with Flexible Data Rate), Ethernet (registered trademark), FlexRay (registered trademark), MOST (Media Oriented Systems Transport) (registered trademark), and LIN (Local Interconnect Network), and are not limited to CAN.

[0077] The vehicle-mounted device 111 sends its own vehicle information to the vehicle information acquisition unit 31. The vehicle information transmitted from each vehicle-mounted device 111 via the CAN bus 51 is stored in a CAN frame to which a CAN-ID (Identifier) ​​indicating the type of data is attached. In the following, the CAN-ID of the CAN frame storing the vehicle information of the vehicle-mounted device 111A is set to "001", the CAN-ID of the CAN frame storing the vehicle information of the vehicle-mounted device 111B is set to "002", and the CAN-ID of the CAN frame storing the vehicle information of the vehicle-mounted device 111C is set to "003".

[0078] After receiving the setting information from the first communication unit 11, the setting unit 12 stores the setting information in the storage unit 16 and performs setting processing related to the transmission of vehicle information based on the setting information. For example, the setting unit 12 performs setting in a manner that transmits vehicle information corresponding to the type of data represented by the setting information to the management device 201 as the setting processing.

[0079] For example, when receiving setting information indicating CAN-ID “001”, the setting unit 12 sets the vehicle information acquisition unit 31 to transmit the vehicle information included in the CAN frame of CAN-ID “001” to the management device 201 as a setting process.

[0080] More specifically, when the vehicle information acquisition unit 31 periodically or irregularly acquires the vehicle information transmitted from the vehicle-mounted device 111A, the setting unit 12 sets the vehicle information acquisition unit 31 to output the vehicle information included in the CAN frame of the CAN-ID "001" to the first communication unit 11. Furthermore, the setting unit 12 sets the first communication unit 11 to transmit the vehicle information received from the vehicle information acquisition unit 31 to the management device 201.

[0081] On the other hand, when the vehicle information acquisition unit 31 has not acquired the vehicle information from the vehicle-mounted device 111A, the setting unit 12 requests the vehicle-mounted device 111A to transmit the vehicle information via the vehicle information acquisition unit 31 as a setting process. The vehicle-mounted device 111A receives the request from the vehicle-mounted device 101 and transmits the CAN frame of CAN-ID "001" to the vehicle-mounted device 101 periodically or irregularly. In addition, the setting unit 12 sets the vehicle information acquisition unit 31 so that the vehicle information included in the CAN frame of CAN-ID "001" is output to the first communication unit 11. In addition, the setting unit 12 sets the first communication unit 11 so that the vehicle information received from the vehicle information acquisition unit 31 is transmitted to the management device 201.

[0082] Figure 3 FIG. 2 is a diagram showing an example of a configuration of a vehicle information acquisition unit in a vehicle-mounted device according to an embodiment of the present disclosure. Figure 3 The vehicle information acquisition unit 31 includes a plurality of receiving units 41 and a processing unit 42 .

[0083] The plurality of receiving units 41 are provided corresponding to the plurality of CAN buses 51, respectively. Figure 4 In the illustrated example, the vehicle information acquisition unit 31 includes three receiving units 41A, 41B, and 41C as the plurality of receiving units 41. The receiving units 41A, 41B, and 41C are provided corresponding to the CAN buses 51A, 51B, and 51C, respectively.

[0084] After receiving a CAN frame from the in-vehicle device 111 via the corresponding CAN bus 51 , each receiving unit 41 stores the received CAN frame in a buffer memory (not shown) and notifies the processing unit 42 of the stored content.

[0085] When receiving the notification that the contents of the CAN frame are stored from the receiving unit 41, the processing unit 42 selects the vehicle information contained in the CAN frame stored in the buffer memory as the vehicle information to be transmitted to the management device 201, when the CAN-ID contained in the setting information in the storage unit 16 and the CAN-ID of the CAN frame stored in the buffer memory of the receiving unit 41 are consistent. The processing unit 42 outputs the selected vehicle information to the first communication unit 11 and the second communication unit 14.

[0086] Figure 4 FIG. 2 is a diagram showing another example of the configuration of the vehicle information acquisition unit in the vehicle-mounted device according to the embodiment of the present disclosure. Figure 4 The vehicle information acquisition unit 31 includes a receiving unit 141 and a processing unit 42 .

[0087] After receiving a CAN frame via each CAN bus 51 , the receiving unit 141 stores the received CAN frame in a buffer memory (not shown) and outputs a notification of the stored content to the processing unit 42 .

[0088] Figure 5 This is a diagram showing an example of a CAN table stored in the vehicle-mounted device according to the embodiment of the present disclosure.

[0089] Reference Figure 5 The storage unit 16 stores a CAN table Tb1 indicating the correspondence between the CAN-ID and the CAN bus 51. For example, the CAN table Tb1 indicates the correspondence between the type of data included in the CAN frame and the CAN bus 51 that transmits the CAN frame.

[0090] In the CAN table Tb1, the CAN bus 51 that transmits the CAN frame of CAN-ID "001" is "CAN1". The CAN bus 51 that transmits the CAN frame of CAN-ID "002" is "CAN2". The CAN bus 51 that transmits the CAN frame of CAN-ID "003" is "CAN3".

[0091] After receiving a notification from the receiving unit 141 that the content of the CAN frame is stored, the processing unit 42 reads out the CAN frame stored in the buffer memory of the receiving unit 141. The processing unit 42 refers to the CAN table in the storage unit 16 and determines the CAN bus 51 corresponding to the CAN-ID contained in the read CAN frame. As a result, the processing unit 42 determines that the CAN frame transmitted in the determined CAN bus 51 has been received. In addition, when the CAN frame of the CAN-ID set in the setting process and the CAN-ID of the CAN frame stored in the buffer memory of the receiving unit 141 are consistent, the processing unit 42 selects the vehicle information contained in the CAN frame stored in the buffer memory as the vehicle information to be sent to the management device 201. The processing unit 42 outputs the selected vehicle information to the first communication unit 11 and the second communication unit 14.

[0092] Refer to Figure 2 The first communication unit 11 transmits the vehicle information received from the vehicle information acquisition unit 31 to the management device 201 .

[0093] (Second Communications Department)

[0094] The second communication unit 14 performs communication in accordance with the USB (Universal Serial Bus) communication method with the terminal device 301. The second communication unit 14 and the terminal device 301 may also be configured to perform wireless communication in accordance with a standard such as Bluetooth (registered trademark).

[0095] The second communication unit 14 transmits the vehicle information received from the vehicle information acquisition unit 31 , that is, the vehicle information acquired by the vehicle information acquisition unit 31 , to the terminal device 301 .

[0096] The terminal device 301 outputs the received vehicle information. For example, the terminal device 301 displays the content of the received vehicle information on its own display unit.

[0097] (Power supply circuit)

[0098] The power circuit 15 supplies electric power to each unit in the vehicle-mounted device 101. For example, the power circuit 15 converts a voltage supplied from a battery 71 mounted on the vehicle 10 into a voltage of a predetermined level and outputs the voltage to each unit.

[0099] The ignition power supply 72 is switched between an on state for supplying power to the power circuit 15 and an off state for stopping the supply of power to the power circuit 15 according to a predetermined operation by the user. The ignition power supply 72 is an example of a power supply unit in the vehicle 10 that supplies power.

[0100] [Explanation of the topic]

[0101] Patent Document 1 discloses a technique for detecting abnormality in a vehicle based on position information and distance information of the vehicle.

[0102] However, it is difficult to identify the location of the abnormality in the vehicle using the position information and distance information of the vehicle as in the system described in Patent Document 1. Furthermore, in the system described in Patent Document 1, when a device without a diagnostic function such as a camera is installed in the vehicle after the vehicle leaves the factory, it is difficult to detect an abnormality related to the device.

[0103] On the other hand, the vehicle-mounted device 101 according to the embodiment of the present disclosure solves such problems by the following configuration and operation.

[0104] [Measurement result information acquisition unit]

[0105] Refer to Figure 2 The measurement result information acquisition unit 32 acquires the measurement result information, which includes the measurement result of the measurement object related to the vehicle-mounted device 101 and affecting the transmission of the vehicle information. Here, the case where the measurement object is the ignition power supply 72 is described. It should be noted that the measurement object is not limited to the ignition power supply 72, and may also be other power supply units.

[0106] The measurement result information includes the measurement result related to the ignition power supply 72. For example, the measurement result related to the ignition power supply 72 includes a predetermined ratio of time per unit time during which power is supplied by the ignition power supply 72. Hereinafter, the ratio of time per unit time during which power is supplied by the ignition power supply 72 is also referred to as "power supply ratio".

[0107] Figure 6 1 is a diagram showing an example of the configuration of a measurement result information acquisition unit in the vehicle-mounted device according to the embodiment of the present disclosure. Figure 6 The measurement result information acquisition unit 32 includes a detection unit 61 and a measurement unit 62 .

[0108] The detection unit 61 detects switching of the ignition power supply 72 between on and off by monitoring the output voltage of the ignition power supply 72 .

[0109] More specifically, for example, the detection unit 61 detects the on and off of the ignition power supply 72 by measuring the output voltage of the ignition power supply 72. The detection unit 61 determines that the ignition power supply 72 is in the on state when the measured voltage value is greater than a predetermined threshold value, and determines that the ignition power supply 72 is in the off state when the measured voltage value is less than the threshold value. The detection unit 61 notifies the measurement unit 62 of the content that the ignition power supply 72 is switched from the on state to the off state or from the off state to the on state.

[0110] Figure 7 This is a diagram for explaining a process of calculating the ratio of the power supply time per unit time performed by the vehicle-mounted device according to the embodiment of the present disclosure.

[0111] Reference Figure 7 When the detection unit 61 notifies the ignition power source 72 that it has been switched to the on state, the measurement unit 62 starts the calculation process of calculating the ratio of the power supply time per unit time. Figure 7 In the example shown, the "unit time" is one hour. Hereinafter, the ratio of the power supply time per unit time is also referred to as the "power supply ratio".

[0112] Next, the measuring unit 62 synchronizes the time between its own vehicle-mounted device 101 and a GPS (Global Positioning System) receiver as an example of the vehicle-mounted device 111. For example, the measuring unit 62 synchronizes the time with the GPS receiver based on the time synchronization information received from the GPS receiver, sets the current time of its own vehicle-mounted device 101, and stores the current time as the start time in the storage unit 16. Figure 7 In the example shown, the start time is "1:30".

[0113] Next, the measuring unit 62 calculates the power supply ratio every hour from the predetermined reference time. The measuring unit 62 stores the calculation result in the storage unit 16. Figure 7 In the example shown, the reference time is "0 o'clock" and the calculation process starts from "2 o'clock".

[0114] Next, when the detection unit 61 notifies that the ignition power source 72 has been switched to the OFF state, the measurement unit 62 stores the current time as the end time in the storage unit 16. Then, the measurement unit 62 calculates the power supply ratio at the end time. Figure 7 In the example shown, the end time is "3:30".

[0115] The measurement unit 62 creates measurement result information including calculation results obtained from the start time to the end time, and outputs the created measurement result information to the first communication unit 11 .

[0116] The first communication unit 11 transmits the measurement result information received from the measurement unit 62 to the management device 201. The measurement unit 62 may generate the measurement result information based on information obtained from an in-vehicle device that monitors the switching of the ignition power source 72 between on and off.

[0117] Figure 8 This is a diagram showing an example of measurement result information transmitted by the vehicle-mounted device according to the embodiment of the present disclosure.

[0118] Reference Figure 7 and Figure 8 At the time "0 o'clock-1 o'clock", the ignition power supply 72 is in the disconnected state, so the power supply ratio per hour is "0%". At the time "1 o'clock-2 o'clock", the ignition power supply 72 is switched to the connected state at "1:30", and power is supplied for 30 minutes from "1:30" to "2 o'clock", so the power supply ratio per hour is "50%". At the time "2 o'clock-3 o'clock", power is always supplied by the ignition power supply 72, so the power supply ratio per hour is "100%". At the time "3 o'clock-4 o'clock", the ignition power supply 72 is switched to the disconnected state at "3:30", and power is supplied for 30 minutes from "3 o'clock" to "3:30", so the power supply ratio is "50%".

[0119] [Management Device]

[0120] Fig. 9 2 is a diagram showing the configuration of a management device according to an embodiment of the present disclosure. Fig. 9 The management device 201 includes a communication unit 1, a detection unit 2, an analysis unit 3, and a storage unit 4. The communication unit 1, the detection unit 2, and the analysis unit 3 are partially or entirely implemented by, for example, a processing circuit including one or more processors. The storage unit 4 is, for example, a nonvolatile memory included in the above-mentioned processing circuit.

[0121] The communication unit 1 transmits and receives information to and from the vehicle-mounted device 101 via the external network 161. The communication unit 1 transmits setting information to the vehicle-mounted device 101. The setting information is registered in the storage unit 4 and updated by the user, for example.

[0122] Fig.10 This is a diagram showing an example of setting information stored in the management device according to the embodiment of the present disclosure.

[0123] Reference Fig.10The setting information shows, for example, the identification information of the vehicle, version information indicating the version of the setting information to be applied to the vehicle-mounted device 101, such as the latest version, transmission cycle information indicating the transmission cycle of the vehicle information to the management device 201, and the correspondence between the data information for specifying the vehicle information. The data information shows, for example, the correspondence between the CAN bus 51 for transmitting the CAN frame including the vehicle information, the CAN-ID of the CAN frame, the data length, and the bit position of the vehicle information in the CAN frame.

[0124] exist Fig.10 In the example shown, the version of the setting information to be applied in the onboard device 101 of the vehicle 10 with the vehicle ID "ID-A" is "Ver1". In addition, the transmission cycle of the vehicle information is 500 milliseconds. In addition, the onboard device 101 uploads the vehicle information with a data length of "1 byte" and a bit position of "3" stored in the CAN frame of CAN-ID "001" transmitted in the CAN bus "CAN1". In addition, the onboard device 101 uploads the vehicle information with a data length of "1 byte" and a bit position of "6" stored in the CAN frame of CAN-ID "002" transmitted in the CAN bus "CAN2". In addition, the onboard device 101 uploads the vehicle information with a data length of "2 bytes" and a bit position of "5" stored in the CAN frame of CAN-ID "003" transmitted in the CAN bus "CAN3".

[0125] Fig.11 This is a diagram showing another example of the setting information stored in the management device according to the embodiment of the present disclosure.

[0126] Fig.11 The setting information when the vehicle-mounted device 101 and each vehicle-mounted device 111 communicate in accordance with the LIN standard is shown. In this case, the vehicle information transmitted from each vehicle-mounted device 111 via the bus is stored in a frame to which an LID-ID indicating the type of data is attached.

[0127] Reference Fig.11 The setting information shows, for example, the identification information of the vehicle, version information indicating the version of the setting information to be applied to the vehicle-mounted device 101, such as the latest version, transmission cycle information indicating the transmission cycle of the vehicle information to the management device 201, and the correspondence between the data information for specifying the vehicle information. The data information shows, for example, the correspondence between the LID-ID of the frame, the data length, and the bit position of the vehicle information in the frame.

[0128] And, in Fig.11In the example shown, the version of the setting information to be applied in the vehicle-mounted device 101 of the vehicle 10 with the vehicle ID "ID-A" is "Ver1". In addition, the transmission cycle of the vehicle information is 500 milliseconds. In addition, the vehicle-mounted device 101 uploads the vehicle information with a data length of "1 byte" and a bit position of "5" stored in the frame of LID-ID "051". In addition, the vehicle-mounted device 101 uploads the vehicle information with a data length of "2 bytes" and a bit position of "3" stored in the frame of LID-ID "052".

[0129] Refer to Fig. 9 The communication unit 1 stores the information received from the vehicle-mounted device 101 in the storage unit 4. More specifically, the communication unit 1 receives the vehicle information and the measurement result information from the vehicle-mounted device 101, and stores the received vehicle information and the measurement result information in the storage unit 4.

[0130] The detection unit 2 performs a detection process for detecting an abnormality related to the vehicle 10 based on the vehicle information and the measurement result information received from the vehicle-mounted device 101 .

[0131] More specifically, the detection unit 2 obtains a theoretical value of the number of uploads of vehicle information of the vehicle 10 corresponding to the identification information included in the vehicle information received by the communication unit 1. More specifically, for example, the detection unit 2 obtains a theoretical table Tb20 indicating theoretical values ​​of the number of uploads of vehicle information per unit time for each vehicle 10 from the storage unit 4. The theoretical table Tb20 is pre-registered in the storage unit 4 by a user, for example.

[0132] Fig.12 This is a diagram showing an example of a theoretical table stored in the management device according to the embodiment of the present disclosure.

[0133] Reference Fig.12 The theoretical table Tb20 shows theoretical values ​​of each of a plurality of time intervals of the number of uploads of vehicle information transmitted in each CAN bus 51. In the theoretical table Tb20, the time interval is the same as the unit time in the calculation process performed by the vehicle-mounted device 101, for example, 1 hour.

[0134] In the theoretical table Tb20, the theoretical value of the number of uploads of vehicle information transmitted in the CAN bus "CAN1" is "100" from 0 o'clock to 1 o'clock, from 1 o'clock to 2 o'clock, and from 2 o'clock to 3 o'clock. The theoretical value of the number of uploads of vehicle information transmitted in the CAN bus "CAN2" is "200" from 0 o'clock to 1 o'clock, from 1 o'clock to 2 o'clock, and from 2 o'clock to 3 o'clock. The theoretical value of the number of uploads of vehicle information transmitted in the CAN bus "CAN3" is "300" from 0 o'clock to 1 o'clock, from 1 o'clock to 2 o'clock, and from 2 o'clock to 3 o'clock.

[0135] The analysis unit 3 obtains a collection performance table Tb21 indicating the correspondence between the collection performance of the vehicle information received by the communication unit 1 and the measurement result information. More specifically, for example, the analysis unit 3 periodically or irregularly creates a collection performance table Tb21 indicating the correspondence between the collection performance of the vehicle information and the measurement result information for each vehicle 10 based on the vehicle information and the measurement result information stored in the storage unit 4, and stores it in the storage unit 4.

[0136] Fig.13 This is a diagram showing an example of a collection performance table stored in the management device according to the embodiment of the present disclosure.

[0137] Reference Fig.13 In the collection performance table Tb21, the collection performance is divided into multiple time intervals. This time interval is the same as the time interval of the theoretical table Tb20, for example, 1 hour. In the vehicle 10 with the vehicle ID "ID-A", the performance value of the upload number of the CAN bus "CAN1" is "50" from 0 o'clock to 1 o'clock, "99" from 1 o'clock to 2 o'clock, and "98" from 2 o'clock to 3 o'clock. The performance value of the upload number of the CAN bus "CAN2" is "100" from 0 o'clock to 1 o'clock, "201" from 1 o'clock to 2 o'clock, and "199" from 2 o'clock to 3 o'clock. The performance value of the upload number of the CAN bus "CAN3" is "150" from 0 o'clock to 1 o'clock, "12" from 1 o'clock to 2 o'clock, and "0" from 2 o'clock to 3 o'clock.

[0138] Furthermore, in the vehicle 10 having the vehicle ID “ID-A”, the actual value of the power supply ratio is “50%” from 0 o’clock to 1 o’clock, “100%” from 1 o’clock to 2 o’clock, and “100%” from 2 o’clock to 3 o’clock.

[0139] The detection unit 2 performs detection processing based on the theoretical table Tb20 and the collection performance table Tb21.

[0140] More specifically, the detection unit 2 performs, for example, an abnormality determination of the number of uploads. For example, when the performance value of the number of uploads in the collection performance table Tb21 is greater than the threshold value Th, the detection unit 2 determines that the number of uploads is normal. On the other hand, when the performance value of the number of uploads in the collection performance table Tb21 is less than the threshold value Th, the detection unit 2 determines that the number of uploads is abnormal.

[0141] Here, the threshold value Th is, for example, a value obtained by subtracting a predetermined value from a value obtained by multiplying a theoretical value of the number of vehicle information uploads transmitted via the CAN bus 51 during the time interval of the object of the detection processing by the power supply ratio during the time interval. Thus, the detection unit 2 can determine that the number of uploads is small, for example, because the period during which the ignition power supply 72 supplies power is short and the period during which the vehicle information is uploaded is short.

[0142] The predetermined value is, for example, 2. In the following, threshold values ​​Th for determining abnormality of the number of uploads of vehicle information transmitted in the CAN buses “CAN1”, “CAN2”, and “CAN3” are threshold values ​​Th1, Th2, and Th3.

[0143] (Abnormality determination within the time period from 0:00 to 1:00)

[0144] Reference Fig.12 and Fig.13 The thresholds Th1, Th2, and Th3 in the time interval from 0 o'clock to 1 o'clock are 48, 98, and 148 respectively. This is because the theoretical values ​​of the corresponding upload numbers in the time interval are "100", "200", and "300", and the power supply ratio in the time interval is "50%", and the predetermined value is "2".

[0145] Since the actual value “50” of the number of uploads from 0 o'clock to 1 o'clock of the CAN bus “CAN1” is greater than or equal to the threshold value Th1 “48”, the detection unit 2 determines that the number of uploads is normal.

[0146] Furthermore, since the actual value “100” of the number of uploads from 0 o'clock to 1 o'clock of the CAN bus “CAN2” is equal to or greater than the threshold value Th2 “98”, the detection unit 2 determines that the number of uploads is normal.

[0147] Furthermore, since the actual value “150” of the number of uploads from 0 o'clock to 1 o'clock of the CAN bus “CAN3” is greater than or equal to the threshold value Th3 “148”, the detection unit 2 determines that the number of uploads is normal.

[0148] (Abnormality determination in the time period from 1:00 to 2:00)

[0149] The thresholds Th1, Th2, and Th3 in the time interval from 1 o'clock to 2 o'clock are 98, 198, and 298 respectively. This is because the theoretical values ​​of the corresponding upload numbers in the time interval are "100", "200", and "300", and the power supply ratio in the time interval is "100%", and the predetermined value is "2".

[0150] Since the actual value “99” of the number of uploads from o'clock 1 to o'clock 2 of the CAN bus “CAN1” is greater than or equal to the threshold value Th1 “98”, the detection unit 2 determines that the number of uploads is normal.

[0151] Furthermore, since the actual value “201” of the number of uploads from o'clock 1 to o'clock 2 of the CAN bus “CAN2” is greater than or equal to the threshold value Th2 “198”, the detection unit 2 determines that the number of uploads is normal.

[0152] Furthermore, since the actual value “12” of the number of uploads from 1 o'clock to 2 o'clock of the CAN bus “CAN3” is smaller than the threshold value Th3 “298” in the time interval, the detection unit 2 determines that the number of uploads is abnormal.

[0153] (Abnormality determination in the time period from 2:00 to 3:00)

[0154] The thresholds Th1, Th2, and Th3 in the time interval from 2 o'clock to 3 o'clock are 98, 198, and 298 respectively. This is because the theoretical values ​​of the corresponding upload numbers in the time interval are "100", "200", and "300", and the power supply ratio in the time interval is "100%", and the predetermined value is "2".

[0155] Since the actual value “98” of the number of uploads from o’clock 2 to o’clock 3 of the CAN bus “CAN1” is greater than or equal to the threshold value Th1 “98”, the detection unit 2 determines that the number of uploads is normal.

[0156] Furthermore, since the actual value “199” of the number of uploads from o'clock 2 to o'clock 3 of the CAN bus “CAN2” is greater than or equal to the threshold value Th2 “198”, the detection unit 2 determines that the number of uploads is normal.

[0157] Furthermore, since the actual value “0” of the number of uploads from 2 o'clock to 3 o'clock of the CAN bus “CAN3” is smaller than the threshold value Th3 “298” in the time interval, the detection unit 2 determines that the number of uploads is abnormal.

[0158] The detection unit 2 outputs the abnormality detection result. For example, the detection unit 2 stores the abnormality detection result in the storage unit 4, or notifies the abnormality detection result.

[0159] [Request for new setting information]

[0160] Refer to Figure 2 , Figure 4 and Fig.12 In the vehicle-mounted device 101, for example, the first communication unit 11 transmits version information indicating the version of the retained setting information to the management device 201. Then, the first communication unit 11 requests the management device 201 to transmit new setting information based on the determination information indicating the determination result of the version indicated by the version information transmitted from the management device 201. That is, the update process of the setting information is performed in the communication system 501.

[0161] More specifically, the first communication unit 11 transmits the version information included in the setting information in the storage unit 16 to the management device 201 regularly or irregularly.

[0162] The management device 201 determines whether the version indicated by the version information received from the vehicle-mounted device 101 is the same as the version of the setting information held by the management device 201. If the version indicated by the version information received from the vehicle-mounted device 101 is different from the version of the setting information held by the management device 201, the management device 201 sends a negative determination message indicating a different determination result to the vehicle-mounted device 101.

[0163] In the vehicle-mounted device 101, the first communication unit 11, after receiving the determination negative information from the management device 201, transmits request information for requesting the management device 201 to transmit new setting information to the management device 201. For example, the first communication unit 11 transmits the request information including the ID of the vehicle 10 on which the vehicle-mounted device 101 is mounted to the management device 201.

[0164] After receiving the request information from the in-vehicle device 101 , the management device 201 transmits new setting information to the in-vehicle device 101 .

[0165] More specifically, for example, after receiving request information from the vehicle-mounted device 101, the management device 201 sends the setting information corresponding to the ID of the vehicle 10 included in the received request information among the setting information stored in the storage unit 4 to the vehicle-mounted device 101 as new setting information.

[0166] In the vehicle-mounted device 101 , upon receiving new setting information from the management device 201 , the first communication unit 11 outputs the received setting information to the setting unit 12 .

[0167] After receiving new setting information from the first communication unit 11, the setting unit 12 stores the new setting information in the storage unit 16 and updates the setting contents related to the transmission of vehicle information based on the new setting information. The vehicle information acquisition unit 31 acquires vehicle information according to the new setting contents.

[0168] <Flow of Action>

[0169] Fig.14 This is a flowchart that defines the operation procedure when the vehicle-mounted device according to the embodiment of the present disclosure transmits vehicle information and measurement result information to the management device.

[0170] Reference Fig.14 First, the vehicle-mounted device 101 waits for the transmission of vehicle information until the setting information is received from the management device 201 (No in step S101).

[0171] Next, when the vehicle-mounted device 101 receives the setting information from the management device 201 (Yes in step S101), it performs setting processing related to the transmission of vehicle information based on the received setting information. For example, as described above, the vehicle-mounted device 101 is set to transmit vehicle information corresponding to the type of data indicated by the setting information to the management device 201 as the setting processing (step S102).

[0172] Next, the vehicle-mounted device 101 acquires vehicle information regularly or irregularly (step S103 ).

[0173] Next, the in-vehicle device 101 selects vehicle information from the acquired vehicle information according to the setting content, and transmits the selected vehicle information to the management device 201 (step S104 ).

[0174] Next, the vehicle-mounted device 101 obtains the measurement result information and sends it to the management device 201. For example, as described above, the vehicle-mounted device 101 sends the measurement result information including the measurement result related to the ignition power supply 72 to the management device 201. Specifically, the vehicle-mounted device 101 calculates the power supply ratio and sends the measurement result information including the calculation result to the management device 201 (step S105). It should be noted that step S104 and step S105 can also be performed in a different order or simultaneously.

[0175] Next, the in-vehicle device 101 repeats the transmission of the acquired vehicle information and measurement result information (steps S103 to S105 ) until new setting information is received from the management device 201 (No in step S106 ).

[0176] On the other hand, upon receiving new setting information from the management device 201 (Yes in step S106 ), the in-vehicle device 101 performs setting processing related to transmission of vehicle information based on the received new setting information (step S102 ).

[0177] In this way, the vehicle-mounted device 101 performs setting processing related to the sending of vehicle information based on the setting information sent from the management device 201. Therefore, even if the vehicle-mounted device 101 is installed on the vehicle 10 after the vehicle 10 leaves the factory and the vehicle information to be sent to the management device 201 is unclear, the vehicle information to be sent to the management device 201 can be selected in the same way as when the vehicle-mounted device is installed before the vehicle 10 leaves the factory.

[0178] Fig.15 This is a diagram showing an example of a process sequence of the vehicle-mounted device and the management device in the communication system according to the embodiment of the present disclosure.

[0179] Reference Fig.15First, the vehicle-mounted device 101 is activated when the battery 71 supplies power (step S201 ). Then, the vehicle-mounted device 111 is activated when the battery 71 supplies power (step S202 ).

[0180] Next, the vehicle-mounted device 101 starts a calculation process for calculating the power supply ratio. The vehicle-mounted device 101 sequentially stores the calculation results in the storage unit 16 (step S203).

[0181] Next, the in-vehicle device 101 obtains vehicle information from the in-vehicle equipment 111 regularly or irregularly (step S204 ).

[0182] Next, the management device 201 transmits setting information indicating setting contents of the vehicle 10 related to transmission of the vehicle information to the in-vehicle device 101 (step S205 ).

[0183] Next, the vehicle-mounted device 101 performs setting processing related to the transmission of vehicle information based on the setting information received from the management device 201. For example, as described above, the vehicle-mounted device 101 performs setting processing in a manner of transmitting vehicle information corresponding to the CAN-ID indicated in the received setting information to the management device 201 (step S206).

[0184] Next, the in-vehicle device 101 selects vehicle information from the acquired vehicle information according to the setting content, and transmits the selected vehicle information to the management device 201 (step S207 ).

[0185] Next, when the vehicle-mounted device 101 detects that the ignition power source 72 is switched to the on state, it synchronizes the time with other devices and stores the current time in the storage unit 16 as the start time of the calculation process for calculating the power supply ratio (step S208 ).

[0186] Next, the vehicle-mounted device 101 performs calculation processing. For example, as described above, the vehicle-mounted device 101 calculates the power supply ratio every time a unit time elapses from a predetermined reference time. The vehicle-mounted device 101 stores the calculation result in the storage unit 16 (step S209 ).

[0187] Next, when the vehicle-mounted device 101 detects that the ignition power source 72 is switched to the off state (step S210), the current time when the switching to the off state is detected is stored as the end time in the storage unit 16. In addition, the vehicle-mounted device 101 calculates the power supply ratio at the end time. The vehicle-mounted device 101 stores the calculation result in the storage unit 16 (step S211).

[0188] Next, the in-vehicle device 101 creates measurement result information including calculation results obtained from the start time to the end time, and transmits the created measurement result information to the management device 201 (step S212 ).

[0189] Next, the management device 201 performs detection processing based on the vehicle information and measurement result information received from the vehicle-mounted device 101 (step S213 ).

[0190] Next, the management device 201 outputs the abnormality detection result. For example, the management device 201 stores the abnormality detection result in the storage unit 4, or notifies the abnormality detection result (step S214).

[0191] Fig.16 This is a diagram showing the sequence of the update process of the setting information in the communication system according to the embodiment of the present disclosure.

[0192] Reference Fig.16 First, the vehicle-mounted device 101 obtains vehicle information from the vehicle-mounted equipment 111 regularly or irregularly (step S301 ).

[0193] Next, the vehicle-mounted device 101 selects vehicle information according to the setting content from the acquired vehicle information, and transmits the selected vehicle information to the management device 201 (step S302 ).

[0194] Next, the in-vehicle device 101 transmits version information indicating the version of the stored setting information to the management device 201 (step S303 ).

[0195] Next, the management device 201 performs a determination process of determining whether the version indicated by the version information received from the in-vehicle device 101 and the version of the setting information held by the management device 201 are the same (step S304 ).

[0196] Next, the management device 201 transmits, to the vehicle-mounted device 101, determination information indicating a determination result of the version indicated by the version information received from the vehicle-mounted device 101. Here, the management device 201 transmits, as the determination information, determination negative information indicating a determination result to the effect that the version indicated by the version information received from the vehicle-mounted device 101 and the version of the setting information held by the management device 201 are different (step S305).

[0197] Next, after receiving the negative determination information, the in-vehicle device 101 transmits request information for requesting the management device 201 to transmit new setting information to the management device 201 (step S306 ).

[0198] Next, upon receiving the request information from the in-vehicle device 101 , the management device 201 transmits new setting information to the in-vehicle device 101 (step S307 ).

[0199] Next, the in-vehicle device 101 updates the setting contents related to transmission of the vehicle information based on the new setting information received from the management device 201 (step S308 ).

[0200] Next, the in-vehicle device 101 reacquires the vehicle information (step S309 ).

[0201] Next, the in-vehicle device 101 selects vehicle information from the newly acquired vehicle information according to the updated setting content, and transmits the selected vehicle information to the management device 201 (step S310 ).

[0202] [Modification 1]

[0203] In the vehicle-mounted device 101 of the embodiment of the present disclosure, the measurement result information acquisition unit 32 is configured to acquire information including the power supply ratio as measurement result information including the measurement result related to the ignition power supply 72, but the present invention is not limited thereto. As the measurement result information, the acquisition unit 13 may also acquire information including the number of activations of the ignition power supply 72 per a predetermined unit time.

[0204] In the first modification, the measuring unit 62 in the measurement result information acquisition unit 32 counts the number of activations of the ignition power 72 per unit time. For example, after confirming that the time of the vehicle-mounted device 101 is synchronized with the time of the GPS receiver, the measuring unit 62 counts the number of times the ignition power 72 is switched from the off state to the on state per unit time.

[0205] Fig.17 This is a diagram showing an example of a collection performance table stored in Modification 1 of the management device according to the embodiment of the present disclosure.

[0206] exist Fig.17 In the collection performance table Tb22 shown, the performance value of the number of uploads in the CAN bus "CAN1" of the vehicle 10 with the vehicle ID "ID-A" is "82" from 0 o'clock to 1 o'clock, "99" from 1 o'clock to 2 o'clock, and "98" from 2 o'clock to 3 o'clock. The performance value of the number of uploads in the CAN bus "CAN2" of the vehicle 10 with the vehicle ID "ID-A" is "167" from 0 o'clock to 1 o'clock, "201" from 1 o'clock to 2 o'clock, and "199" from 2 o'clock to 3 o'clock. The performance value of the number of uploads in the CAN bus "CAN3" of the vehicle 10 with the vehicle ID "ID-A" is "249" from 0 o'clock to 1 o'clock, "12" from 1 o'clock to 2 o'clock, and "0" from 2 o'clock to 3 o'clock.

[0207] And, in Fig.17 In the collection record table Tb22 shown, the record value of the number of starts in the vehicle 10 with the vehicle ID "ID-A" is "2" from 0 o'clock to 1 o'clock, "0" from 1 o'clock to 2 o'clock, and "0" from 2 o'clock to 3 o'clock.

[0208] In the first modification, the detection unit 2 in the management device 201 performs detection processing based on the theoretical table Tb20 and the collection performance table Tb22 .

[0209] Here, in the vehicle 10, it takes time to start up the vehicle-mounted system including the vehicle-mounted device 101 and the vehicle-mounted equipment 111, and to shut down the vehicle-mounted system. Therefore, the period during which power is supplied to the vehicle-mounted device 101 is, for example, a time obtained by subtracting the following value from the unit time: the sum of the time required to start up the vehicle-mounted system and the time required to shut down the vehicle-mounted system multiplied by the number of starts.

[0210] For example, consider a case where the unit time is 1 hour, the total time is 5 minutes, and the number of starts is 2. In this case, the time for which power is supplied in the vehicle-mounted device 101 is 50 minutes, which is a value obtained by subtracting 10 minutes from 1 hour. In other words, the ratio of the power supply time per unit time when the number of starts is 2 is approximately 80%.

[0211] In the modification 1, the detection unit 2 determines that the upload number is abnormal when the actual value of the upload number in the collection performance table Tb22 is less than the threshold value Th. In the modification 1, the threshold value Th is, for example, a value obtained by multiplying the theoretical value of the upload number of vehicle information transmitted via the CAN bus 51 in the time interval of the object of the detection process by the power supply ratio corresponding to the number of startups in the time interval. Therefore, in the modification 1, the detection unit 2 can determine that the upload number is small, for example, because the number of startups of the ignition power supply 72 is large and the period of uploading vehicle information is short.

[0212] exist Fig.12 and Fig.17 In the example shown, for example, the power supply ratio corresponding to the number of activations is 80% when the number of activations is "2" times, and is 100% when the number of activations is "0" times.

[0213] (Abnormality determination within the time period from 0:00 to 1:00)

[0214] exist Fig.12 and Fig.17 In the example shown, the thresholds Th1, Th2, and Th3 in the time interval from 0 o'clock to 1 o'clock are 80, 160, and 240 respectively. This is because the theoretical values ​​of the corresponding upload numbers in the time interval are "100", "200", and "300" respectively, and the number of starts in the time interval is "2".

[0215] Since the actual value “82” of the number of uploads from 0 o'clock to 1 o'clock of the CAN bus “CAN1” is greater than or equal to the threshold value Th1 “80”, the detection unit 2 determines that the number of uploads is normal.

[0216] Furthermore, since the actual value “167” of the number of uploads from 0 o'clock to 1 o'clock of the CAN bus “CAN2” is greater than or equal to the threshold value Th2 “160”, the detection unit 2 determines that the number of uploads is normal.

[0217] Furthermore, since the actual value “249” of the number of uploads from 0 o'clock to 1 o'clock of the CAN bus “CAN3” is greater than or equal to the threshold value Th3 “240”, the detection unit 2 determines that the number of uploads is normal.

[0218] It should be noted that in the first modification, the abnormality determination result in the time interval from 1:00 to 2:00 and the abnormality determination result in the time interval from 2:00 to 3:00 are the same as those in the first modification. Fig.13 The same situation.

[0219] [Modification 2]

[0220] In the vehicle-mounted device 101 of the embodiment of the present disclosure, the measurement result information acquisition unit 32 is configured to acquire information including measurement results related to the ignition power supply 72 as measurement result information, but the present invention is not limited thereto. The measurement result information acquisition unit 32 may also acquire information including measurement results related to the communication quality between the first communication unit 11 and the management device 201.

[0221] Fig.18 FIG. 2 is a diagram showing a configuration of a second modification of the vehicle-mounted device according to the embodiment of the present disclosure. Fig.18 , the first communication unit 11 in the vehicle-mounted device 101A measures the SNR (Signal to Noise Ratio) of a wireless signal received from a wireless base station (not shown) including information from the management device 201, for example. That is, in the second modification, the measurement object that affects the transmission of vehicle information is the first communication unit 11. Here, the larger the SNR value, the smaller the noise, and the better the wireless signal quality.

[0222] The first communication unit 11 measures the SNR of the wireless signal received by the first communication unit 11 for each unit time during a predetermined measurement period. Here, the unit time is, for example, one hour. The first communication unit 11 outputs the measurement result for each unit time to the measurement result information acquisition unit 32.

[0223] The measurement result information acquisition unit 32 acquires the measurement result of the SNR of the wireless signal based on the first communication unit 11. More specifically, the measurement result information acquisition unit 32 creates measurement result information including the measurement result per unit time in a predetermined period, and transmits the created measurement result information to the management device 201 via the first communication unit 11.

[0224] Fig.19This is a diagram showing an example of a collection performance table stored in Modification 2 of the management device according to the embodiment of the present disclosure.

[0225] exist Fig.19 In the collection performance table Tb23 shown, the performance value of the number of uploads in the CAN bus "CAN1" of the vehicle 10 with the vehicle ID "ID-A" is "10" from 0 o'clock to 1 o'clock, "99" from 1 o'clock to 2 o'clock, and "100" from 2 o'clock to 3 o'clock. The performance value of the number of uploads in the CAN bus "CAN2" of the vehicle 10 with the vehicle ID "ID-A" is "21" from 0 o'clock to 1 o'clock, "201" from 1 o'clock to 2 o'clock, and "198" from 2 o'clock to 3 o'clock. The performance value of the number of uploads in the CAN bus "CAN3" of the vehicle 10 with the vehicle ID "ID-A" is "29" from 0 o'clock to 1 o'clock, "300" from 1 o'clock to 2 o'clock, and "298" from 2 o'clock to 3 o'clock.

[0226] And, in Fig.19 In the collection performance table Tb23 shown in FIG. 1 , the communication method between the vehicle 10 and the management device 201 is “LTE”. Fig.16 In the collection performance table Tb23 shown, the performance values ​​of the communication quality in the vehicle 10 with the vehicle ID "ID-A" are "10" from 0 o'clock to 1 o'clock, "99" from 1 o'clock to 2 o'clock, and "99" from 2 o'clock to 3 o'clock.

[0227] In the second modification, the detection unit 2 in the management device 201 performs detection processing based on the theoretical table Tb20 and the collection performance table Tb23 .

[0228] More specifically, in the second modification, the detection unit 2 determines that the upload number is abnormal when the actual value of the upload number in the collection performance table Tb23 is less than the threshold value Th. In the second modification, the threshold value Th is a value obtained by multiplying the theoretical value of the upload number of vehicle information transmitted via the CAN bus 51 in the time interval of the object of the detection processing by the percentage of the actual value of the communication quality in the time interval and then subtracting a predetermined value. Here, the predetermined value is, for example, 2.

[0229] (Abnormality determination within the time period from 0:00 to 1:00)

[0230] Reference Fig.12 and Fig.19 The thresholds Th1, Th2, and Th3 in the time interval from 0 o'clock to 1 o'clock are 8, 18, and 28 respectively. This is because the theoretical values ​​of the corresponding upload numbers in the time interval are "100", "200", and "300", and the communication quality in the time interval is "10", and the predetermined value is "2".

[0231] Since the actual value "10" of the number of uploads from 0 o'clock to 1 o'clock of the CAN bus "CAN1" is greater than or equal to the threshold value Th1 "8", the detection unit 2 determines that the number of uploads is normal.

[0232] Furthermore, since the actual value “21” of the number of uploads from 0 o'clock to 1 o'clock of the CAN bus “CAN2” is equal to or greater than the threshold value Th2 “18”, the detection unit 2 determines that the number of uploads is normal.

[0233] Furthermore, since the actual value “29” of the number of uploads from 0 o'clock to 1 o'clock of the CAN bus “CAN3” is equal to or greater than the threshold value Th3 “28”, the detection unit 2 determines that the number of uploads is normal.

[0234] It should be noted that in the second modification, the abnormality determination result in the time interval from 1 o'clock to 2 o'clock and the abnormality determination result in the time interval from 2 o'clock to 3 o'clock are the same as those in the second modification. Fig.13 The same situation.

[0235] [Variation 3]

[0236] The vehicle-mounted device 101 of the embodiment of the present disclosure is configured to receive the setting information from the management device 201 , but the present invention is not limited thereto. The vehicle-mounted device 101 may be configured to receive the setting information from the terminal device 301 .

[0237] In Modification 3, the vehicle information acquisition unit 31 in the acquisition unit 13 acquires vehicle information based on setting information transmitted from a terminal device 301 which is another device different from the management device 201 .

[0238] More specifically, the second communication unit 14 outputs the setting information received from the terminal device 301 to the setting unit 12. After receiving the setting information from the second communication unit 14, the setting unit 12 stores the setting information in the storage unit 16 and performs setting processing related to transmission of vehicle information based on the setting information.

[0239] Fig. 20 It is a diagram showing the sequence of setting processing in Modification 3 of the communication system according to the embodiment of the present disclosure.

[0240] Reference Fig. 20 First, the vehicle-mounted device 101 obtains vehicle information from the vehicle-mounted equipment 111 regularly or irregularly (step S401 ).

[0241] Next, the terminal device 301 transmits setting information indicating setting contents of the vehicle 10 related to the transmission of the vehicle information to the vehicle-mounted device 101. For example, the terminal device 301 stores the setting information according to the operation of the user (step S402).

[0242] Next, the vehicle-mounted device 101 performs setting processing related to the transmission of vehicle information based on the setting information received from the terminal device 301. For example, the vehicle-mounted device 101 performs setting processing in a manner of transmitting vehicle information corresponding to the CAN-ID indicated in the received setting information to the terminal device 301 (step S403).

[0243] Next, the vehicle-mounted device 101 selects vehicle information from the acquired vehicle information according to the setting content, and transmits the selected vehicle information to the terminal device 301 (step S404 ). Furthermore, the vehicle-mounted device 101 transmits the selected vehicle information to the management device 201 (step S405 ).

[0244] Next, after receiving the vehicle information from the in-vehicle device 101 , the terminal device 301 displays the content of the received vehicle information on, for example, its own display unit (step S406 ).

[0245] Next, the terminal device 301 transmits a setting change notification of the content of the change of setting information to the vehicle-mounted device 101 according to, for example, the operation of the user (step S407 ).

[0246] Next, as a response to the setting change notification received from the terminal device 301, the vehicle-mounted device 101 transmits a change permission notification indicating whether the setting change is possible to the terminal device 301. Here, the vehicle-mounted device 101 transmits a notification of the content that the setting change can be performed to the terminal device 301 as the change permission notification (step S408).

[0247] Next, after receiving the change permission notification from the onboard device 101 , the terminal device 301 transmits the changed setting information to the onboard device 101 (step S409 ).

[0248] Next, the in-vehicle device 101 updates the setting contents based on the new setting information received from the terminal device 301 (step S410 ).

[0249] Next, the in-vehicle device 101 transmits an update completion notification indicating that the update of the setting contents has been completed to the terminal device 301. It should be noted that the in-vehicle device 101 may also transmit the update completion notification to the management device 201 (step S411).

[0250] Next, the in-vehicle device 101 reacquires the vehicle information (step S412 ).

[0251] Next, the vehicle-mounted device 101 selects vehicle information from the newly acquired vehicle information according to the updated setting content, and transmits the selected vehicle information to the terminal device 301 (step S413 ). Furthermore, the vehicle-mounted device 101 transmits the selected vehicle information to the management device 201 (step S414 ).

[0252] Next, after receiving the vehicle information again from the vehicle-mounted device 101 , the terminal device 301 displays the content of the received vehicle information on its own display unit or the like (step S415 ).

[0253] It should be noted that part or all of the functions of the management device 201 according to the embodiment of the present disclosure may also be provided by cloud computing. That is, the management device 201 according to the embodiment of the present disclosure may also be a cloud server composed of a plurality of servers.

[0254] Furthermore, in the communication system 501 of the embodiment of the present disclosure, the measurement target that affects the transmission of vehicle information is configured to be the ignition power supply 72, but the present invention is not limited thereto. The measurement target that affects the transmission of vehicle information may be another power supply unit.

[0255] Furthermore, in the communication system 501 of the embodiment of the present disclosure, the first communication unit 11 is configured to send version information indicating the version of the stored setting information to the management device 201, but the present invention is not limited thereto. The first communication unit 11 may also be configured not to send version information to the management device 201. That is, the setting contents related to the transmission of vehicle information in the vehicle-mounted device 101 may not be updated.

[0256] In the communication system 501 of the embodiment of the present disclosure, the vehicle-mounted device 101 is provided with the second communication unit 14 for transmitting vehicle information to the terminal device 301, but the present invention is not limited thereto. The vehicle-mounted device 101 may also be provided without the second communication unit 14 and may not transmit vehicle information to the terminal device 301.

[0257] The above embodiments are to be considered as illustrative in all points and are not restrictive. The scope of the present invention is indicated by the claims rather than the above description, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0258] Each process (function) of the above-mentioned embodiment is implemented by a processing circuit including one or more processors. The above-mentioned processing circuit can also be constituted by an integrated circuit that combines one or more memories, various analog circuits, and various digital circuits in addition to the above-mentioned one or more processors. The above-mentioned one or more memories store programs (commands) that enable the above-mentioned one or more processors to perform the above-mentioned processes. The above-mentioned one or more processors can perform the above-mentioned processes according to the above-mentioned programs read from the above-mentioned one or more memories, or according to the logic circuits designed in advance for performing the above-mentioned processes. The above-mentioned processor can also be a variety of processors suitable for computer control, such as a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), a DSP (Digital Signal Processor), an FPGA (Field Programmable Gate Array), and an ASIC (Application Specific Integrated Circuit). It should be noted that the above-mentioned multiple processors separated physically can also cooperate with each other and perform the above-mentioned processes. For example, the processors installed in physically separated computers can cooperate with each other via a network such as a LAN (Local Area Network), a WAN (Wide Area Network), and the Internet to perform the above-mentioned processes. The program can also be installed into the memory from an external server device via the network, or can be circulated in a state of being stored in a recording medium such as a CD-ROM (Compact Disc Read Only Memory), a DVD-ROM (Digital Versatile Disk Read Only Memory), and a semiconductor memory, and installed from the recording medium into the memory.

[0259] The above description includes the features described below.

[0260] [Note 1]

[0261] A vehicle-mounted device, mounted on a vehicle, wherein the vehicle-mounted device has a processing circuit, the processing circuit acquires vehicle information and measurement result information, the vehicle information is related to the vehicle, the measurement result information includes the measurement result of a measurement object that is related to the vehicle-mounted device and affects the transmission of the vehicle information, and the processing circuit transmits the vehicle information and the measurement result information acquired by the acquisition unit to the management device.

[0262] [Note 2]

[0263] A communication control program is used in a vehicle-mounted device installed in a vehicle, wherein the communication control program is used to make a computer function as an acquisition unit and a communication unit, the acquisition unit acquires vehicle information and measurement result information, the vehicle information is related to the vehicle, the measurement result information includes the measurement result of the measurement object that is related to the vehicle-mounted device and affects the transmission of the vehicle information, and the communication unit sends the vehicle information and the measurement result information acquired by the acquisition unit to a management device.

[0264] Description of Reference Numerals

[0265] 1 Ministry of Communications

[0266] 2. Detection Department

[0267] 3. Analysis Department

[0268] 4.16 Storage

[0269] 10 Vehicles

[0270] 11 First Ministry of Communications

[0271] 12. Setting section

[0272] 13. Acquisition

[0273] 14 Second Ministry of Communications

[0274] 15 Power Circuit

[0275] 31 Vehicle Information Acquisition Unit

[0276] 32 Measurement result information acquisition unit

[0277] 41, 41A, 41B, 41C, 141 Receiving unit

[0278] 42 Processing Department

[0279] 51, 51A, 51B, 51C CAN bus

[0280] 61 Detection Department

[0281] 62 Measurement Department

[0282] 71 Battery

[0283] 72 Ignition power supply

[0284] 101, 101A Vehicle-mounted device

[0285] 111, 111A, 111B, 111C Vehicle-mounted equipment

[0286] 161 External Network

[0287] 201 Management Device

[0288] 301 Terminal Device

Claims

1. A vehicle-mounted device, mounted on a vehicle, comprising: an acquisition unit that acquires vehicle information and measurement result information, wherein the vehicle information is related to the vehicle, and the measurement result information includes a measurement result of a measurement object that is related to the vehicle-mounted device and affects the transmission of the vehicle information; and The communication unit transmits the vehicle information and the measurement result information acquired by the acquisition unit to a management device.

2. The vehicle-mounted device according to claim 1, wherein: The measurement result information includes a measurement result related to a power supply unit that supplies electric power in the vehicle.

3. The vehicle-mounted device according to claim 2, wherein: The measurement result related to the power supply unit includes a ratio of time during which the power is supplied by the power supply unit per a predetermined unit time.

4. The vehicle-mounted device according to claim 2 or 3, wherein: The measurement result related to the power supply unit includes a predetermined number of activations of the power supply unit per unit time.

5. The vehicle-mounted device according to any one of claims 1 to 4, wherein: The measurement result information includes a measurement result related to the communication quality between the communication unit and the management device.

6. The vehicle-mounted device according to any one of claims 1 to 5, wherein: The acquisition unit acquires the vehicle information based on setting information transmitted from the management device.

7. The vehicle-mounted device according to claim 6, wherein: The communication unit transmits version information indicating the version of the maintained setting information to the management device, The communication unit requests the management device to transmit the new setting information based on determination information transmitted from the management device, the determination information indicating a determination result of the version indicated by the version information.

8. The vehicle-mounted device according to any one of claims 1 to 7, wherein: The acquisition unit acquires the vehicle information based on setting information transmitted from another device different from the management device. The communication unit further transmits the vehicle information acquired by the acquisition unit to the other device.

9. A communication control method is a communication control method of a vehicle-mounted device mounted on a vehicle, the communication control method comprising the following steps: acquiring vehicle information and measurement result information, wherein the vehicle information is related to the vehicle, and the measurement result information includes a measurement result of a measurement object that is related to the vehicle-mounted device and affects the transmission of the vehicle information; and The acquired vehicle information and the acquired measurement result information are sent to a management device.

10. A communication system comprising: On-board device, mounted on a vehicle; and a management device for detecting an anomaly associated with the vehicle, The vehicle-mounted device comprises: an acquisition unit that acquires vehicle information and measurement result information, wherein the vehicle information is related to the vehicle, and the measurement result information includes a measurement result of a measurement object that is related to the vehicle-mounted device and affects the transmission of the vehicle information; and a communication unit that transmits the vehicle information and the measurement result information acquired by the acquisition unit to the management device, The management device detects the abnormality based on the vehicle information and the measurement result information received from the communication unit.

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