JP5979337B2 - In-vehicle device, error detection device, and error detection method - Google Patents

Description

  The present invention relates to an in-vehicle device, an error detection device, and an error detection method.

  There is a distinction between destinations (regions where products are sold), such as vehicles for Europe and vehicles for North America. Similarly, in data such as map data referred to by an in-vehicle device such as a navigation device mounted on a vehicle, there is a distinction between destinations such as data for Europe and data for North America (for example, see Patent Document 1). ).

  Usually, the destination of the map data of the on-board device mounted on the vehicle coincides with the destination of the vehicle. That is, map data for the European region is stored in an in-vehicle device mounted on a vehicle for Europe. Thus, for example, it is assumed that an in-vehicle device in which map data for the North American region is stored in a vehicle for Europe is erroneously mounted. When the destination of the vehicle and the destination of the map data do not match, the in-vehicle device software detects an error and outputs it as error information to notify that an in-vehicle device with a different destination is installed in the vehicle. I am doing so. The mismatch of destinations is detected by the in-vehicle device software as follows. First, information indicating the destination of the vehicle is acquired from the vehicle side and compared with the destination of the map data. If the destination of the vehicle and the destination of the map data do not match, it is determined as an error. This determination is performed when, for example, the ignition is turned on and the in-vehicle device is activated.

  This error is error information or an error code called DTC (Diagnostic Trouble Code) for providing information indicating the presence / absence of a failure or malfunction and a factor when the vehicle is maintained and inspected. A self-diagnostic program operates at an appropriate timing in each ECU (Electronic Control Unit) mounted on the vehicle, and when error is detected, the error information is extracted.

  For example, in a vehicle manufacturing factory, an in-vehicle device in which map data of the European region is stored is mounted on a vehicle whose destination is European. At the final stage of the vehicle manufacturing process, inspection before shipping of the vehicle is performed. When the vehicle-mounted device is turned on and activated, an operation for detecting the error starts, and the presence or absence of an error is checked. If the destination of the vehicle is different from the destination of the map data, error information is recorded at this timing. That is, a defect is detected by an inspection before the vehicle is shipped.

  If no error is detected in the inspection before shipment, in the normal vehicle life cycle, after that, the in-vehicle device is not removed and another navigation system is installed (with an exception). In the configuration in which an operation for detecting an error is started each time the power is turned on, in other words, every time the ignition is turned on, no error is detected after shipment.

  In extracting such error information, it is important to reliably record error information when a defect exists, but on the other hand, error information is not erroneously recorded even though there is no error or defect. The point is also important. The reason for the latter is that if there is no error or malfunction and error information is recorded as erroneous information, confusion may occur during vehicle inspection. In the prior art, there is a case where an error is detected although it is not actually a malfunction. Such a case is shown below.

JP 2010-249542 A

  For example, a user who purchased a vehicle in Europe moved to the United States with the vehicle. Since a vehicle sold in Europe is a vehicle for Europe, an in-vehicle device in which map data of the European region is stored is installed. Further, it is assumed that the user desires to use the in-vehicle device in the United States thereafter.

  Since the map data of the European region is stored when moving to the United States, it is necessary to update to the map data of the North America region. When the map data is updated, the destination of the vehicle is Europe, but the destination of the map data is North America, so the destination of the vehicle and the destination of the map data do not match. Therefore, in the conventional in-vehicle device, an error is detected when the error detection process is executed after updating to the map data of the North American region. That is, although the above event is not a malfunction in practice, there is a problem that an error code is detected.

  An object of the present invention is to solve the above-described problems. When the data referred to by the in-vehicle device is intentionally updated to data of a destination different from the destination of the vehicle, the destination is A vehicle-mounted device in which the first mismatch error is not detected is obtained.

  The in-vehicle apparatus according to the present invention includes a data storage unit that stores data depending on a destination, an update data acquisition unit that acquires update data for updating the data, and updates the data using the update data An update unit, a vehicle information transmission / reception unit that acquires a destination of a vehicle to be mounted, and an error detection unit that outputs destination mismatch error information when the destination of the vehicle and the destination of the data do not match, The error detecting unit is characterized by suppressing output of destination mismatch error information based on the data update history.

  Another vehicle-mounted device according to the present invention includes a GPS (Global Positioning System) signal, a vehicle position detection unit that detects a current position of a vehicle to be mounted, and a data storage unit that stores data depending on the destination A vehicle information transmission / reception unit that acquires a destination of the vehicle, and an error detection unit that outputs destination mismatch error information when the destination of the vehicle and the data destination do not match, When the current position of the vehicle is included in the data destination, the output of the destination mismatch error information is suppressed.

  In the error detection device according to the present invention, when the destination of data depending on the destination, the information receiving unit that receives the destination of the mounted vehicle, and the destination of the data and the destination of the vehicle do not match An error detection unit that outputs destination mismatch error information, and the error detection unit is characterized by suppressing output of destination mismatch error information based on a data update history.

  In the error detection method according to the present invention, the information receiving unit receives the destination of the data depending on the destination, the information receiving unit receives the destination of the mounted vehicle, and the error detecting unit When the destination does not match the destination of the vehicle, the destination mismatch error information is output, and the error detection unit suppresses the output of the destination mismatch error information based on the data update history. To do.

According to the in-vehicle device according to the present invention, when the data referred to by the in-vehicle device is intentionally updated to data of a destination different from the destination of the vehicle, the in-vehicle device in which an unnecessary destination mismatch error is not detected. Can be provided.
Further, according to the error detection device of the present invention, when the data referred to by the in-vehicle device is intentionally updated to data of a destination different from the destination of the vehicle, an unnecessary destination mismatch error is not detected. An error detection device can be provided.
Furthermore, according to the error detection method of the present invention, when the data referred to by the in-vehicle device is intentionally updated to data of a destination different from the destination of the vehicle, an unnecessary destination mismatch error is not detected. An error detection method can be provided.

It is a figure which shows the structure of the vehicle-mounted apparatus of Embodiment 1 which concerns on this invention. It is a flowchart which shows operation | movement of the vehicle-mounted apparatus of Embodiment 1 which concerns on this invention. It is a flowchart which shows operation | movement of the vehicle-mounted apparatus of Embodiment 2 which concerns on this invention. It is a figure which shows the structure of the vehicle-mounted apparatus of Embodiment 3 which concerns on this invention. It is a flowchart which shows the update process of the vehicle-mounted apparatus of Embodiment 3 which concerns on this invention. It is a flowchart which shows the update process of the vehicle-mounted apparatus of Embodiment 4 which concerns on this invention. It is a figure which shows the structure of the vehicle-mounted apparatus of Embodiment 5 which concerns on this invention. It is a flowchart which shows the error detection process of the vehicle-mounted apparatus of Embodiment 5 which concerns on this invention. It is a flowchart which shows an example of a structure of the vehicle-mounted apparatus of Embodiment 6 which concerns on this invention.

Embodiment 1 FIG.
FIG. 1 is a diagram showing a configuration of an in-vehicle device 101 according to Embodiment 1 of the present invention. The in-vehicle device 101 according to the first embodiment uses a data storage unit 1 that stores data depending on a destination, an update data acquisition unit 2 that acquires update data for updating data, and update data. The update unit 3 for updating the data, the vehicle information transmitting / receiving unit 4a for acquiring the destination of the mounted vehicle, and the destination mismatch error information are output when the destination of the vehicle and the destination of the data do not match. And an error detection unit 5a.

  The data storage unit 1 uses a hard disk or a memory as a readable / writable medium. The update data acquisition unit 2 acquires update data from a removable storage medium (CD, DVD, removable memory, etc.). The update data acquisition unit 2 may download the update data using the Internet by wired or wireless communication.

  The vehicle information transmission / reception unit 4a stores information common to each ECU of the vehicle, and sends the information via a vehicle-mounted network or the like to a destination of a vehicle on which the vehicle-mounted device 101 is mounted from the vehicle-side information storage unit 100a Get vehicle information such as. The in-vehicle network is, for example, a CAN (Controller Area Network).

  Hereinafter, map data will be described as an example of data depending on the destination.

  Furthermore, the in-vehicle device 101 according to the first embodiment includes a destination information acquisition unit 6a. The destination information acquisition unit 6a identifies the destination of the map data stored in the data storage unit 1 and outputs it to the error detection unit 5a.

  Ordinary map data includes attribute data related to map data attributes such as the destination, version, and creation date of the map data. The destination information acquisition unit 6a determines the destination by reading these attribute data.

  Furthermore, the in-vehicle device 101 according to the first embodiment includes an update history storage unit 7 a that stores update history information indicating that the update unit 3 has updated the map data stored in the data storage unit 1. The error detection unit 5a suppresses output of mismatch error information based on the update history information.

  In the update history information immediately after the in-vehicle device 101 is manufactured, the update is recorded as “none” as an initial value. The update history information records whether or not the map update has been performed in the life cycle from when the in-vehicle device 101 is manufactured until it is discarded. Therefore, the update history storage unit 7a is considered so that the update history information does not disappear even when the power of the in-vehicle device 101 is turned off. The update history information is stored in the update history storage unit 7a as a flag that sets “0” when there is no update and “1” when there is an update, for example.

  Furthermore, the in-vehicle device 101 according to the first embodiment includes an error information recording unit 8a that records the mismatch error information output from the error detection unit 5a.

  Furthermore, the in-vehicle device 101 according to the first embodiment receives a GPS signal and detects a current position of the vehicle on which the vehicle is mounted, and a vehicle position detection unit 9a detects the current position of the vehicle detected by the vehicle position detection unit 9a. And a navigation function calculation unit 10 that calculates a route to the destination set by referring to the map data stored in the data storage unit 1.

  Furthermore, the in-vehicle device 101 according to the first embodiment transmits the destination information to the navigation function calculation unit 10 when the user sets a destination, and provides the user with the information output from the navigation function calculation unit 10. A man-machine interface 11 such as a display or a speaker having Here, the navigation function refers to outputting route information, guidance information, and map information to the outside by a display or voice output. A touch panel, keyboard, and remote control that accept user input such as destination settings. An input unit such as a joystick is also included in the man-machine interface 11.

  The update unit 3, the error detection unit 5a, the destination information acquisition unit 6a, the vehicle position detection unit 9a, and the navigation function calculation unit 10 of the in-vehicle device 101 according to the first embodiment are configured by a microcomputer, A well-known CPU, ROM, RAM, I / O, and a bus line for connecting these components are provided. In the ROM, a program to be executed by the in-vehicle device 101 is written, and a CPU or the like executes predetermined arithmetic processing according to this program. The update history storage unit 7a and the error information recording unit 8a use a hard disk or a memory as a readable / writable medium.

  FIG. 2 is a flowchart showing the operation of the in-vehicle device 101 according to the first embodiment of the present invention. FIG. 2A is a flowchart showing the update process of the in-vehicle device 101. FIG. 2B is a flowchart showing error detection processing of the in-vehicle device 101.

  First, map data update processing will be described with reference to FIGS. 1 and 2A. Update map data is prepared in a form stored in a medium external to the in-vehicle device 101, and is fetched from the update data acquisition unit 2. The update unit 3 transfers the update map data from the update data acquisition unit 2 to the data storage unit 1 and stores it (step S21). Next, update history information indicating that the update unit 3 has updated the map data (update history) is recorded in the update history storage unit 7a (step S22).

  Next, the error detection process of the error detection unit 5 will be described with reference to FIGS. 1 and 2B. The error detection unit 5a acquires the destination of the map data stored in the data storage unit 1 via the destination information acquisition unit 6a, and is stored in the vehicle side information storage unit 100a via the vehicle information transmission / reception unit 4a. Get the destination of the current vehicle. Then, the error detection unit 5a determines whether the destination of the map data matches the destination of the vehicle (step S23).

  If the destination of the vehicle and the destination of the map data match, the error detection unit 5a does not detect a mismatch error (step S24) and ends the error detection process. If the destination of the vehicle and the destination of the map data do not match, the error detection unit 5a determines whether there is an update history based on the update history information in the update history storage unit 7a (step S25).

  If it is determined in step S25 that there is an update history, the error detection unit 5a does not detect a mismatch error (step S24) and ends the error detection process. If the error detection unit 5a determines in step S25 that there is no update history, it detects a mismatch error (step S26), outputs mismatch error information to the error information storage unit 8a (step S27), and ends the error detection process.

  As described above, when the update unit 3 updates the data, the error detection unit 5a suppresses the output of the destination mismatch error information even if the destination of the vehicle and the destination of the data do not match. That is, when the update history storage unit 7a stores the update history information, the error detection unit 5a outputs the destination mismatch error information even if the destination of the vehicle and the destination of the data do not match. Suppress.

  The in-vehicle device according to the first embodiment uses the data storage unit that stores data depending on the destination, the update data acquisition unit that acquires update data for updating the data, and the update data. An update unit that updates data, a vehicle information transmission / reception unit that acquires a destination of a vehicle to be mounted, and an error detection unit that outputs destination mismatch error information when the destination of the vehicle and the destination of the data do not match The error detection unit suppresses output of the destination mismatch error information based on the update history of the data. The in-vehicle device according to Embodiment 1 determines whether there is an update history of data depending on the destination based on the update history of data depending on the destination, and detects a destination mismatch error if there is a data update history Configured not to. Therefore, when the data depending on the destination is intentionally updated to the data of the destination different from the destination of the vehicle, the destination mismatch error is not detected, and the in-vehicle device that does not output the information regarding the unnecessary destination mismatch error Can be provided. Therefore, according to the in-vehicle device according to the first embodiment, an unnecessary destination mismatch error is not detected at the time of vehicle inspection or the like, and there is an effect that there is no confusion.

Embodiment 2. FIG.
In the in-vehicle device 101 and the error detection method shown in the second embodiment, when the destination of the vehicle and the destination of the data are different, the destination of the data before the update matches the destination of the update even if there is an update history In this case, the point that the destination mismatch error is detected is different from the in-vehicle apparatus and the error detection method shown in the first embodiment.

  In general, there are many cases in which the manufacturer of the vehicle and the vehicle-mounted device are different, and the vehicle and the in-vehicle device are individually manufactured in separate processes. In this case, if the vehicle-mounted device is manufactured after the vehicle production plan is found, the vehicle manufacturing period is extended. For this reason, in general, the required number of in-vehicle devices is predicted in advance and the in-vehicle devices are prepared prior to the manufacture of the vehicles so that the vehicle can be immediately prepared.

  On the other hand, when manufacturing an in-vehicle device, the stored data is switched to the latest version and manufactured at a specific timing. For example, in map data, a new version of the year is supplied every April. In this case, an in-vehicle device storing an old version of map data is manufactured during March, and an in-vehicle device storing a new version of map data is manufactured from April. After April, even when an in-vehicle device is attached to a vehicle, it is necessary to install an in-vehicle device loaded with a new version of map data.

  In this case, in the case where the required number of predictions is excessive from the actual results, the in-vehicle device manufactured by March becomes redundant. About the in-vehicle device which became surplus, by implementing the update of map data, it can be set as the state which memorize | stored the newest map data, and becomes an in-vehicle device which can be actually mounted in a vehicle.

  Usually, the map data stored in this way is updated to the latest version, so that even if there is a surplus in the production of in-vehicle devices, all the in-vehicle devices that are manufactured can be used effectively. ing.

  The update process in this case may be performed before the vehicle-mounted device is mounted on the vehicle if the vehicle is delivered to the user, or the vehicle-mounted device is mounted on the vehicle. It may be carried out after being done.

  However, when the update process is performed before the in-vehicle device is mounted on the vehicle, the map is updated in a state where only the power source is supplied by the in-vehicle device alone. However, the responsibility for supplying the in-vehicle device with the latest map data to the vehicle manufacturer at that time is often on the side of manufacturing the in-vehicle device. There are many cases to carry out before mounting. In addition, due to manufacturing reasons, it is often more convenient to update the map in the state of the vehicle-mounted device alone before the vehicle-mounted device is mounted on the vehicle.

  That is, once the in-vehicle device is manufactured, there is a case where the update process is performed in a state of the in-vehicle device alone before the in-vehicle device is mounted on the vehicle. In this case, the update history information is recorded before the in-vehicle device is mounted on the vehicle. Here, it is assumed that the vehicle-mounted device for North America is a vehicle-mounted device in which the destination is updated to the same data as described above before being mounted on the vehicle. When this in-vehicle device is mounted on a vehicle by mistake, it is a case where a destination mismatch error should be detected. However, the in-vehicle device shown in the first embodiment has a problem that the destination mismatch error is not detected in the above case. Therefore, in the in-vehicle device 101 shown in the second embodiment, the above problems are solved.

  Regarding the configuration of the in-vehicle device 101 of the second embodiment, the update history information stored in the update history storage unit 7a further includes information indicating a destination of data before update and information indicating a destination of update data. Except for having, it is the same as the vehicle-mounted apparatus 101 of Embodiment 1. FIG. Therefore, description of the other structure of the vehicle-mounted apparatus 101 of Embodiment 2 is abbreviate | omitted.

  The map data stored in the data storage unit 1 is different before and after the update of the map data. The update history information further includes information indicating a destination of data before update and information indicating a destination of update data. Therefore, it is possible to determine whether or not the destination of the data before update matches the destination of the update data.

  The operation of the in-vehicle device 101 according to the second embodiment will be described. FIG. 3 is a flowchart showing the operation of the in-vehicle device 101 according to the second embodiment of the present invention. FIG. 3A is a flowchart showing update processing of the in-vehicle device 101, and FIG. 3B is a flowchart showing error detection processing of the in-vehicle device 101.

  In the update process of map data, as shown in FIG. 3A, first, the update unit 3 acquires information indicating the destination of the map data stored in the data storage unit 1, and the update data Information indicating the destination of the update map data is acquired from the acquisition unit 2 (step S31). Next, the update unit 3 takes in the map data for update from the update data acquisition unit 2, transfers it to the data storage unit 1, and stores it (step S32). After step S32, the update unit 3 adds the information indicating the destination of the map data before the update and the information indicating the destination of the map data for update to the update of the map data (update history), The update history information is recorded in the update history storage unit 7 (step S33).

  Next, an error detection process of the error detection unit 5a of the in-vehicle device 101 according to the second embodiment of the present invention will be described. As shown in FIG.3 (b), in step S34, the error detection part 5a acquires the destination of the map data memorize | stored in the data storage part 1 via the destination information acquisition part 6a, and vehicle information transmission / reception The destination of the vehicle stored in the vehicle information storage unit 100a is acquired via the unit 4a, and it is determined whether the destination of the map data matches the destination of the vehicle. If the destination of the vehicle and the destination of the map data match in step S8, the error detection unit 5a does not detect the mismatch error (step S35) and ends the error detection process. If the destination of the vehicle does not match the destination of the map data in step S8, the error detection unit 5a determines whether there is an update history (step S36). This step S36 is the same as step S5 shown in FIG.

  If it is determined in step S36 that there is no update history, the error detection unit 5a detects a destination mismatch error (step S37), outputs mismatch error information to the error information storage unit 8a (step S39), and performs error detection processing. finish. When the error detection unit 5a determines that there is an update history in step S36, the error detection unit 5a determines whether the destination of the map data is different before and after the update (step S38). In other words, based on the update history information, the error detection unit 5a suppresses output of destination mismatch error information when the destination of the data before update and the destination of the data for update do not match.

  As a result of the determination in step S38, if the destinations of the map data are different before and after the update, the error detection unit 5a does not detect the destination mismatch error (step S35) and ends the error detection process. As a result of the determination in step S38, if the destinations of the map data match before and after the update, the error detection unit 5a detects a destination mismatch error (step S37), and the error information storage unit 8a has a mismatch error. Information is output (step S39), and the error detection process is terminated.

  According to the in-vehicle device shown in the second embodiment, when the data depending on the destination referred to by the in-vehicle device is intentionally updated to the data of the destination different from the destination of the vehicle, the destination mismatch error is It is possible to provide an in-vehicle device that is not detected and does not leave information regarding an unnecessary destination mismatch error. In addition, in the case where the in-vehicle device is updated to the same destination data as before the update on the vehicle, a mismatch error is detected if the destination of the vehicle and the destination of the data do not match. In addition, it is possible to detect a destination error when the on-vehicle device is attached to the vehicle.

  In the second embodiment, it is assumed that the map of the in-vehicle device produced in excess before the vehicle is installed is replaced with new map data for the same destination map data before and after the update.

Embodiment 3 FIG.
In the in-vehicle device described in the second embodiment, consider a case where the in-vehicle device for Europe is surplus due to overproduction at the end of March. In April, it is assumed that the number of in-vehicle devices for North America is insufficient. Therefore, when the map data stored in the surplus in-vehicle device is replaced by the update process from the map data in Europe to the map data in North America by the destination, the production shortage of the in-vehicle device for North America is quickly resolved. Is done.

  In the case as described above, in the update process of the map data before being mounted on the vehicle, an update history in which the destination of the map data is different before and after the update remains. Even in this in-vehicle device (the map for North America is remembered after the update) where the update destinations of the map data are different before and after this update, it was installed in a vehicle with a different destination (European vehicle in the above case) In this case, it is necessary to detect a destination mismatch error. Therefore, in the in-vehicle device shown in the third embodiment, the above problems are solved.

  FIG. 4 is a diagram illustrating a configuration of the in-vehicle device 102 according to the third embodiment. The in-vehicle device 102 according to the third embodiment further includes an external signal acquisition unit 13 that acquires the recording suppression signal 12 in addition to the configuration of the in-vehicle device 101 according to the second embodiment. In addition to the operation described in the second embodiment, the update unit 3 suppresses output of update history information when the recording suppression signal 12 is input from the external signal acquisition unit 13. Note that, in the configuration of the in-vehicle device 102 of the third embodiment, the same reference numerals are given to the same configurations as the in-vehicle device 101 of the second embodiment, and the description is omitted.

  When the in-vehicle device 102 is manufactured, when the map data is updated before the in-vehicle device 102 is mounted on the vehicle, the recording suppression signal 12 is input from the outside of the in-vehicle device 102. In other cases, the recording suppression signal 12 is not input. The recording suppression signal 12 is input by an operator's operation or the like in the process of manufacturing the in-vehicle device 102. In addition, after the in-vehicle device 102 is attached to the vehicle, it is mounted on the vehicle by taking measures such as connecting nothing to a terminal (not shown) on the in-vehicle device 102 side to which the recording suppression signal 12 is input. Thereafter, the recording suppression signal 12 is not input to the in-vehicle device 102.

  FIG. 5 shows a flowchart of the data update process of the in-vehicle device 102 according to the third embodiment. Step S51 is the same as step S31 shown in FIG. 3A, and the update unit 3 acquires information indicating the destination of the map data stored in the data storage unit 1 and updates the data acquisition unit. 2 to obtain information indicating the destination of the map data for update. Next, the update unit 3 takes in the update map data from the update data acquisition unit 2 and transfers it to the data storage unit 1 (step S52). After step S52, the update unit 3 determines whether the recording suppression signal 12 has been input (step S53). The update unit 3 ends the update process when the recording suppression signal 12 is input in step S53. If the recording suppression signal 12 is not input in step S53, the update unit 3 updates the map data (update history), and indicates the destination of the map data before update and the destination of the map data for update. The information indicating the destination is added and recorded as update history information in the update history storage unit 7a (step S54).

  Note that the error detection process of the error detection unit 5a of the in-vehicle device 102 of the third embodiment is the same as the error detection process of the error detection unit 5a of the in-vehicle device 101 of the second embodiment, and thus the description thereof is omitted.

  According to the in-vehicle device shown in the third embodiment, even if the map data is updated before the on-vehicle device is mounted on the vehicle, if the record suppression signal 12 is input, the map update history information resulting from this is updated. Not recorded. Therefore, as with the in-vehicle device shown in the second embodiment, the output of unnecessary destination mismatch error information is suppressed, and the vehicle to be mounted is mistaken when intentionally updated to data of a destination different from that before the update. In this case, a destination mismatch error can be detected. In addition, although the vehicle-mounted apparatus 102 shown in Embodiment 3 demonstrated having the external signal acquisition part 13 which acquires the recording suppression signal 12 in addition to the structure of the vehicle-mounted apparatus 101 which concerns on Embodiment 2, Embodiment 1 is demonstrated. In addition to the configuration of the in-vehicle device 101 according to the above, an external signal acquisition unit 13 that acquires the recording suppression signal 12 may be provided.

Embodiment 4 FIG.
As apparent from the configuration of the third embodiment, if the updating unit 3 in the in-vehicle device 102 can determine whether or not the in-vehicle device is currently installed in the vehicle by any means, the destination of the map data differs before and after the update. Even if an update history remains, a destination mismatch error can be detected when a wrong vehicle is installed.

  In the fourth embodiment, as a modified example of the third embodiment, it is possible to replace the input of the recording suppression signal 12 by determining whether or not the in-vehicle device 102 has received information on the vehicle manufacturing number. Other configurations and functions are the same as those of the in-vehicle device 102 shown in the third embodiment.

  The vehicle serial number is recorded in the ECU (vehicle-side information storage unit 100a) different from the vehicle-mounted device 102 mounted on the vehicle together with information on the destination of the vehicle, and the vehicle-mounted device 102 is mounted on the vehicle. If there is, the vehicle information transmission / reception unit 4a receives a production number signal representing the production number of the vehicle from the vehicle side. The update unit 3 suppresses output of update history information when the serial number signal is not input from the vehicle information transmission / reception unit 4a.

  The function of the in-vehicle device 102 may have a function of displaying the vehicle serial number on the screen. The serial number signal is input to the in-vehicle device 102 when there is such a use. Since the request that the user wants to confirm the serial number of the vehicle may occur at any time, it is always input to the in-vehicle device 102 as long as the in-vehicle device 102 is mounted on the vehicle. Therefore, it is possible to determine whether or not the in-vehicle device 102 is mounted on the vehicle according to the presence or absence of the serial number signal.

  FIG. 6 shows a flowchart of the update process of the in-vehicle device 102 according to the fourth embodiment. Step S61 is the same as step S31, and the update unit 3 acquires information indicating the destination of the map data stored in the data storage unit 1, and updates the map data from the update data acquisition unit 2. Get information indicating the destination of Next, the update unit 3 takes in the update map data from the update data acquisition unit 2 and transfers it to the data storage unit 1 (step S62). After step S62, the update unit 3 determines whether a production number signal has been received (step S63). In step S63, when the update unit 3 has not received the manufacturing number signal, the update process is terminated without recording the update history information in the update history storage unit 7a. In step S63, when the update unit 3 has received the production number signal, the fact that the map data has been updated (update history) indicates that the destination of the map data before update and the destination of the map data for update The update history storage unit 7a is recorded as update history information (step S64), and the update process is terminated.

  According to the in-vehicle device shown in the form 4 of the embodiment, the output of unnecessary destination mismatch error information is suppressed, and the update history does not remain when deliberately updated to the data of the destination different from that before the update. A destination mismatch error can be detected when a wrong vehicle is installed.

  In addition, since the error detection process of the error detection part 5a of the vehicle-mounted apparatus 102 of Embodiment 4 is the same as Embodiment 2, description is abbreviate | omitted. Further, although the fourth embodiment is a modification of the third embodiment, it can also be realized by the configuration of other embodiments. Further, if the updating unit 3 in the in-vehicle device 102 can determine whether or not the in-vehicle device 102 is currently mounted on the vehicle, the determination criterion is not limited to whether or not the vehicle manufacturing number is received.

  In general, when the in-vehicle device 102 is mounted on a vehicle, it is often connected to an ECU that is an in-vehicle device having a function different from that of the in-vehicle device 102. Specific examples of the ECU include a navigation device, an audio device, an air conditioning control device, a communication device, an obstacle detection device, and an information display device. The ECUs transmit and receive information to and from each other by communication means such as an in-vehicle network. When the in-vehicle device 102 is mounted on a vehicle, there may be a case where the serial number of the ECU to which the in-vehicle device 102 is connected is received. Therefore, for example, the error detection unit 5a may use whether or not the serial number of the ECU to which the in-vehicle device 102 is connected is received as a criterion for determining whether or not the vehicle is mounted. When not mounted on the vehicle, the in-vehicle device 102 is not connected to another ECU, and the serial number of the other ECU cannot be received. Further, when the in-vehicle device 102 is mounted on a vehicle, the information may be received from an ECU to which the in-vehicle device 102 is connected. The in-vehicle device 102 determines the number of connected ECUs based on information received from the connected ECU, and is mounted on the vehicle if the number of connected ECUs is equal to or greater than a predetermined number. If the number of connected ECUs is less than a predetermined number, it may be determined that the ECU is not mounted on the vehicle.

Embodiment 5 FIG.
In the in-vehicle device 103 of the fifth embodiment, the vehicle position detection unit 9b receives a GPS signal, detects the current position of the mounted vehicle, and transmits it to the error detection unit 5a. When the current position of the vehicle acquired from the vehicle position detection unit 9b is included in the data destination area, the error detection unit 5a suppresses output of destination mismatch error information. FIG. 7 shows the configuration of the in-vehicle device 103 according to the fifth embodiment. The same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted. Further, in the in-vehicle device 103 shown in the fifth embodiment, the update history storage unit 7a shown in the in-vehicle device 101 in the first embodiment is not an essential configuration, and thus is not shown in FIG.

  In-vehicle device 103 according to the fifth embodiment calculates the current position of the vehicle when a GPS signal is received, and the current position of the vehicle is included in the destination area of the map data stored in data storage unit 1. In such a case, the output of the destination mismatch error information is suppressed, and the destination mismatch error information recorded in the past is deleted.

  Therefore, in the in-vehicle device 103 according to the fifth embodiment, for example, when a user who purchases a vehicle (stores a map of Europe) in Europe moves to the United States with the vehicle, the vehicle is updated to the United States map in the United States. Even when updating to a map data of a destination different from the destination of the map data before the update, if the current position of the vehicle is included in the destination area of the updated map data, a destination mismatch error The configuration does not output information.

  In addition, in the update process of the in-vehicle device 103 according to the fifth embodiment, the update unit 3 only needs to fetch the update map data from the update data acquisition unit 2 and transfer it to the data storage unit 1. The storage of the update history information in the update history storage unit 7a shown in the second embodiment may be performed but is not essential.

  FIG. 8 is a flowchart showing an error detection process of the in-vehicle device 103 according to the fifth embodiment. First, it is determined whether the vehicle position detector 9b has received a GPS signal (step S81). In step S81, if the vehicle position detector 9b receives a GPS signal, the vehicle position detector 9b calculates the current position of the vehicle and outputs the current position of the vehicle to the error detector 5a (step S82). The error detection unit 5a determines whether the current position of the vehicle acquired from the vehicle position detection unit 9b is included in the destination area of the map data stored in the data storage unit 1 acquired from the destination information acquisition unit 6a. (Step S83).

  When the current position of the vehicle is included in the destination area of the map data in step S83, the error detection unit 5a does not output the destination mismatch error information (step S84). That is, the error detection unit 5a suppresses output of destination mismatch error information when the current position of the vehicle is included in the destination area of the map data. If the destination mismatch error information is not detected, the error detection unit 5a deletes the destination mismatch error information stored in the past (step S85), and ends the error detection process.

  In step S81, if the vehicle position detector 9b has not received a GPS signal, the process proceeds to step S86. Further, when the current position of the vehicle is not included in the destination area of the map data in step S83, the process proceeds to step S86. In step S86, the error detection unit 5a acquires the destination of the map data stored in the data storage unit 1 through the destination information acquisition unit 6a, and the vehicle information storage unit 100a through the vehicle information transmission / reception unit 4a. Is stored, and it is determined whether the destination of the map data matches the destination of the vehicle.

  If the destination of the vehicle does not match the destination of the map data in step S86, the error detection unit 5a detects destination mismatch error information (step S87). When the error detection unit 5a detects the destination mismatch error information, the error information is output to the error information recording unit 8a (step S88), and the error detection process is terminated.

  If it is determined in step S86 that the destination of the vehicle matches the destination of the map data, the error detection unit 5a does not detect the destination mismatch error information (step S84) and is stored in the past. The destination mismatch information is deleted (step S85), and the error detection process is terminated.

  According to the in-vehicle device 103 shown in the fifth embodiment, even when the update process is performed with the update data of the destination different from the destination of the vehicle, the current position of the vehicle is in the destination area of the update data. If it is included, a destination mismatch error is not detected. Therefore, if the data that depends on the destination referred to by the in-vehicle device is intentionally updated to the destination data different from the destination of the vehicle, the destination mismatch error is not detected, and unnecessary destination mismatch It is possible to provide an in-vehicle device that does not leave information regarding errors.

  On the other hand, in the pre-shipment inspection when the vehicle is manufactured, such an inspection is usually performed indoors where GPS signals do not reach. Therefore, when the diagnostic program is operated, step S20 in the flowchart of FIG. This applies to the case where no GPS signal is received. In other words, when it is necessary to truly confirm whether or not a destination mismatch error has occurred, a destination mismatch error can be detected correctly in accordance with an actual erroneous mounting.

Embodiment 6 FIG.
In Embodiments 1 to 5, the error detection unit 5a has been described as being built in the in-vehicle device, but the error detection unit 5a may be configured outside the in-vehicle device. The present embodiment is a configuration in which the error detection unit 5a is configured outside the in-vehicle device with respect to any configuration of the first to fifth embodiments. In FIG. 9, as an example, a configuration in which the error detection unit 5 a is configured outside the in-vehicle device with respect to the configuration of the first embodiment is illustrated. In addition, the same number is attached | subjected to the same component as Embodiment 1-5, and description is abbreviate | omitted.

  The in-vehicle device 104 of the present embodiment includes a data storage unit 1, an update data acquisition unit 2, an update unit 3, a vehicle information transmission / reception unit 4b, a destination information acquisition unit 6b, and an update history storage unit 7b. The vehicle position detecting unit 9b, the navigation function calculating unit 10, and the man-machine interface 11 are included.

  As shown in FIG. 9, the vehicle information transmission / reception unit 4b is mounted from a vehicle-side information storage unit 100b that stores information common to the ECUs of the vehicle and notifies the information via an in-vehicle network or the like. Get vehicle information such as the destination of the vehicle. The in-vehicle network is, for example, a CAN (Controller Area Network).

  The destination information acquisition unit 6b identifies the destination of the map data stored in the data storage unit 1 and outputs it to the vehicle information transmission / reception unit 4b. Normal map data includes data related to map data attributes such as a destination of map data, a version of the map data, and a creation date of the map data. The destination information acquisition unit 6b reads the data to determine the destination.

  The update history storage unit 7b stores update history information indicating that the update unit 3 has updated the map data stored in the data storage unit 1, and outputs the update history information to the vehicle information transmitting / receiving unit 4b.

  The error detection device 105 includes an error information storage unit 8b, an error detection unit 5b, and an information reception unit 14. The information receiving unit 14 acquires the destination of the map data and the update history information from the vehicle information transmitting / receiving unit 4b, and acquires the destination of the vehicle from the vehicle side information storage unit 100b. The error detection unit 5b outputs or suppresses the destination mismatch information. The error information recording unit 8a records the mismatch error information output by the error detection unit 5a. Similar to the update history storage unit 7a, the update history storage unit 7b is considered so that the update history information does not disappear even when the power of the in-vehicle device 104 is turned off.

  The update process of this embodiment is the same as that of the first to fifth embodiments. Further, in the error detection process of the present embodiment, the error detection unit 5b acquires the destination of the map data and the update history information from the vehicle information transmission / reception unit 4b via the information reception unit 14, and from the vehicle side information storage unit 100b. It is the same as Embodiments 1 to 4 except that the destination of the vehicle is acquired.

  The information receiving unit 14 receives a destination of data depending on a destination and a destination of a vehicle to be mounted. The error detection unit 5b outputs destination mismatch error information when the data destination and the vehicle destination do not match, and based on any of the error detection processes shown in the first to fifth embodiments, Suppresses output of destination mismatch error information.

  The effect by this Embodiment has the same effect as the effect of any corresponding embodiment among Embodiments 1-5.

Embodiment 7 FIG.
In the in-vehicle device shown in the first to sixth embodiments, map data has been described as an example of data depending on the destination stored in the data storage unit. However, in the in-vehicle device shown in the seventh embodiment, the destination is As long as it depends, data relating to music may be used as another example. In the seventh embodiment, the in-vehicle device is an audio device, and the navigation function calculation unit 10 shown in the first to sixth embodiments is replaced with an audio function execution unit (not shown).

  As a specific example of the data related to music stored in the data storage unit by the in-vehicle device shown in the seventh embodiment, when the audio function execution unit reproduces a song, the song name or singer name output to the man-machine interface 11; There is a CDDB (Compact Disc Data Base) which is a database including names of performers. The CDDB uses different data depending on the destination because the preferred music varies depending on the region. Further, the CDDB has the same problem as the map data of the navigation device because the content becomes obsolete as new CDs are released with the passage of time and needs to be updated to new data.

  Therefore, in the in-vehicle device shown in the seventh embodiment, the data stored in the data storage unit is data related to music, and other configurations and functions are the same as those in the in-vehicle device shown in any one of the first to sixth embodiments. To do. Therefore, the effect by the vehicle-mounted apparatus of Embodiment 7 has the same effect as the effect of the vehicle-mounted apparatus shown in any one of Embodiments 1-6.

1 data storage unit, 2 update data acquisition unit, 3 update unit, 4a, 4b vehicle information transmission / reception unit, 5a, 5b error detection unit, 6a, 6b destination information acquisition unit, 7a, 7b update history storage unit, 8a, 8b Error information recording unit, 9a, 9b Vehicle position detection unit, 10 Navigation function calculation unit, 11 Man machine interface, 12 Recording suppression signal, 13 External signal acquisition unit, 14 Information reception unit, 100a, 100b Vehicle information storage unit, 101 , 102, 103 In-vehicle device, 105 Error detection device.

Claims (12)

A data storage unit for storing data depending on the destination;
An update data acquisition unit for acquiring update data for updating the data;
An update unit for updating the data using the update data;
A vehicle information transmission / reception unit for acquiring a destination of the vehicle to be mounted;
An error detection unit that outputs destination mismatch error information when the destination of the vehicle and the destination of the data do not match;
With
The error detection unit suppresses output of the destination mismatch error information based on the update history of the data. The error detection unit suppresses output of destination mismatch error information even when the destination of the vehicle and the destination of the data do not match when the update unit updates the data. The in-vehicle device according to claim 1. An update history storage unit for storing update history information indicating that the update unit has updated the data;
The in-vehicle device according to claim 1, wherein the error detection unit suppresses output of the destination mismatch error information based on the update history information. In the case where the update history storage unit stores the update history information, the error detection unit includes the destination mismatch error information even if the destination of the vehicle does not match the destination of the data. The in-vehicle device according to claim 3, wherein the output of the vehicle is suppressed. The update history information further includes information indicating a destination of the data before updating and information indicating a destination of the data for update,
The error detection unit suppresses output of the destination mismatch error information when the destination of the data before updating based on the update history information and the destination of the data for update do not match. The in-vehicle device according to claim 3 characterized by things. An external signal acquisition unit for acquiring a recording suppression signal;
The in-vehicle device according to claim 3, wherein the update unit suppresses output of the update history information when the recording suppression signal is input from the external signal acquisition unit. The vehicle information transmission / reception unit further acquires a serial number signal representing the serial number of the vehicle,
The in-vehicle device according to claim 3, wherein the update unit suppresses output of the update history information when the serial number signal is not input from the vehicle information transmission / reception unit. A vehicle position detector that receives a GPS signal and detects a current position of the vehicle mounted;
A data storage unit for storing data depending on the destination;
A vehicle information transmitting / receiving unit for acquiring a destination of the vehicle;
An error detection unit that outputs destination mismatch error information when the destination of the vehicle and the destination of the data do not match;
With
The error detection unit suppresses output of the destination mismatch error information when the current position of the vehicle is included in the destination of the data. The in-vehicle device according to claim 1, wherein the data is map data. The in-vehicle device according to claim 1, wherein the data is data related to music. An information receiving unit for receiving a destination of data depending on a destination and a destination of a vehicle to be mounted;
An error detection unit that outputs destination mismatch error information when the destination of the data and the destination of the vehicle do not match;
With
The error detection unit suppresses output of the destination mismatch error information based on the update history of the data. The information receiving unit receives the destination of the data depending on the destination,
The information receiving unit receives a destination of a vehicle to be mounted,
The error detection unit outputs destination mismatch error information when the destination of the data and the destination of the vehicle do not match,
The error detection method, wherein the error detection unit suppresses output of the destination mismatch error information based on the update history of the data.

Images