JP3562258B2 - Vehicle guidance device and vehicle guidance system - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle guidance device, and more particularly, to a guidance device having a function of performing route guidance corresponding to occurrence of a vehicle failure.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a vehicle guidance device has been known as an in-vehicle electronic device for performing route guidance, and a so-called navigation device is typically known. In the navigation device, a destination for traveling of the vehicle is set, and a route to the destination is set using map information. Then, route guidance is performed using the set route. For example, a map around the current position of the vehicle is displayed on the display, and the set route is displayed on this map so as to be distinguished from other roads. Further, voice guidance is output from the speaker as appropriate.
[0003]
[Problems to be solved by the invention]
Usually, the destination of the vehicle travel is specified by the user. The user inputs his / her desired place as a destination to the navigation device, and receives route guidance for reaching the destination. However, the present invention is not limited to such applications, and the route guidance technology can be effectively used as described below even when a vehicle failure occurs.
[0004]
When a failure occurs in a vehicle, it is necessary to bring the vehicle to a repair facility such as a dealer or a service center. Thus, route guidance technology can be used to guide the vehicle to an appropriate repair facility. For this route guidance, a failure state detection device is used. The failure state detection device is also called a failure diagnosis device or a diagnosis device, and is conventionally known as a device that detects a failure state of a vehicle. The failure state detection device detects various failure parts and contents generated in the vehicle based on input signals from various in-vehicle devices and sensors. As described in JP-A-7-129894, it is preferable to integrate a failure detection device into a vehicle guidance device in order to provide route guidance to a repair facility when a failure occurs.
[0005]
According to the above publication, when an abnormality occurs in a vehicle, the vehicle and the management center are wirelessly connected, and the current position of the vehicle is transmitted to the management center. The management center searches for the nearest service center and informs the vehicle of the location of the service center. Further, a failure code indicating the details of the abnormality of the vehicle is sent to the management center, and the management center remotely diagnoses the failure. Furthermore, it has been proposed to notify a vehicle of a service center suitable for the content of a failure based on a remote diagnosis result.
[0006]
However, the conventionally proposed techniques have the following problems. When a failure occurs, it may be better to change the way the vehicle runs than during normal running. The purpose is to prevent deterioration of the failure state of the vehicle, or to guide the vehicle to the repair facility more safely. In addition, various types of failures are actually repaired in one repair facility. Even when going to the same repair facility, it may be better to change the way the vehicle runs before going to the repair facility according to the content of the failure. For example, there are cases where it is better to maintain the vehicle speed as low as possible. Further, for example, there are cases where it is better to reduce the number of stops as much as possible, and cases where it is better to avoid turning right (or left) as much as possible. Heretofore, such considerations have not been taken into account at all, and there is therefore room for improvement in providing better guidance to the repair facility.
[0007]
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a vehicle guidance device capable of performing appropriate route guidance according to a failure state when a failure occurs. It is an object of the present invention to provide a suitable guidance system including a simple guidance device.
[0008]
[Means for Solving the Problems]
(1) The vehicle guide device of the present inventionA vehicle guidance device that performs route guidance using a route to a destination, comprising: a failure state detection unit that detects a failure state of a vehicle; and a route guidance unit that provides route guidance to a failure handling destination when a failure occurs. And The route guidance means uses a failure adaptation route, which is a route suitable for traveling according to the failure state, as the route to the failure handling destination for route guidance. The failure handling destination is, for example, a repair facility, and preferably causes the repair facility to be selected based on the failure state.
[0014]
According to the present invention, a failure adaptation route suitable for traveling according to a failure state is used as a guidance route to a failure destination. Even if the failure destination is the same, it is preferable to use different routes depending on the type of the failure state. If the route is different, the way the vehicle runs will also change. In accordance with the guidance using the appropriate route, the user can easily drive the vehicle to the destination corresponding to the failure in an appropriate driving manner according to the failure state.
[0015]
In the present invention, preferably, the failure adaptation route is set based on a restriction condition required for running the vehicle under the detected failure state. The restriction condition indicates an appropriate way of driving the vehicle, and is, for example, a prohibited matter or a recommended matter for the vehicle running. Prohibitions indicate how to avoid running, while recommendations indicate how to run, and both have similar functions. Prohibition items are applied to the embodiments described below.
[0016]
Further, in the above aspect, for example, the vehicle-mounted guide device may include a determination unit that determines a restriction condition and a route setting unit that performs a route setting based on the determination result. Further, for example, the information center may have a determination unit, and the on-board guidance device may have a route setting unit. Further, for example, the information center may include a determination unit and a route setting unit, and send the set route to the vehicle.
[0017]
(2)A vehicle guidance system according to one embodiment of the present invention includes a guidance device mounted on a vehicle and an information center that performs data communication with the guidance device, and the guidance device performs route guidance using a route to a destination. Do. The guidance device includes a current position detecting unit that detects a current position of the vehicle and a failure state detecting unit that detects a failure state of the vehicle, and transmits the current position and the failure state to the information center. The information center has search means for searching for a repair facility that can repair the failure indicated by the failure state and is close to the current position, creates a route to the repair facility, or finds a route creation condition for creating the route. Then, the created route or the route creation condition is transmitted to the guidance device. In particular, the route to the repair facility is set to be a failure adaptation route suitable for traveling according to the failure state of the vehicle. Here, the route creation condition is, for example, a limit condition required for running the vehicle under the detected failure state, as described above. Further, for example, the route creation condition is a parameter for route calculation (a relay point through which a route should pass). The parameters are set so that if a parameter is applied to the path calculation, a failure adaptive path is obtained as a calculation result.
[0018]
In this embodiment, data communication with the information center is used. The information center makes it easy to obtain and manage the latest information on repair facilities nationwide. Further, the information center can easily manage a large amount of information. Therefore, by using the information center, route guidance for coping with the occurrence of a failure is more preferably performed.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention (hereinafter, referred to as embodiments) will be described with reference to the drawings. FIG. 1 is a block diagram showing the overall configuration. In this embodiment, the guide device of the present invention is applied to a vehicle navigation device 10. The navigation device 10 and the information center 50 constitute a vehicle guidance system of the present invention.
[0020]
A navigation ECU 12 is provided in the navigation device 10, and the navigation ECU 12 controls the entire device. A GPS device 14 is connected to the navigation ECU 12. A GPS (global positioning system) device 14 detects a current position based on a radio wave transmitted from an artificial satellite and sends the current position to the navigation ECU 12. In the modification, various types of current position detecting means other than the GPS may be used, and various sensors used for satellite navigation, autonomous navigation, radio navigation, and the like are applicable. The navigation ECU 12 is connected to an input device 16 for the user to input various instructions (such as destinations) to the device. Further, a display 18 and a speaker 20 as output means are connected to the navigation ECU 12. The navigation ECU 12 is connected to a map database storage unit 22 that stores map information such as road shapes nationwide.
[0021]
The navigation ECU 12 performs various processes related to route guidance using the current position detected by the GPS device 14 and the map information in the map database storage unit 22. The navigation ECU 12 reads a map around the current position, generates image data for display, and outputs it to the display 18. As a result, a map around the current position is displayed on the display 18. A current position mark indicating the current position of the vehicle is displayed on the map in an overlapping manner. When the user inputs a destination, the navigation ECU 12 uses the map information to search for and set an appropriate route to the destination. For the route calculation, the well-known Dijkstra method or the like is appropriately used. The set route is displayed on the display 18 so as to be distinguished from other roads. In addition, the navigation ECU 12 creates voice guidance for guiding the vehicle along the set route as needed, and outputs the voice guidance using the speaker 20.
[0022]
In addition, a diagnosis device 24 is connected to the navigation ECU 12. The diagnosis device 24 detects that a failure has occurred in the vehicle, and further detects a failure state. The diagnosis device 24 is connected to various in-vehicle devices and sensors (not shown) provided in the vehicle, and a signal indicating the state of the vehicle is input from these components. The diagnosis device 24 obtains a diagnosis code based on the input signal. Here, a table (not shown) for associating the input signal with the diagnostic code is used. The diagnostic code is a code indicating a failure state, and the location where the failure has occurred and the content of the failure are specified by the diagnostic code. When a failure occurs, the diagnosis device 24 outputs a diagnosis code to the navigation ECU 12.
[0023]
Further, a communication device 26 is connected to the navigation ECU 12. The navigation ECU 12 performs data communication with the information center 50 using the communication device 26. Terrestrial communication and satellite communication are applicable, and the communication device 26 may be a mobile phone (car phone). When a failure occurs, the diagnosis code obtained by the diagnosis device 24 is sent to the information center 50 together with the current position of the vehicle.
[0024]
Next, the configuration of the information center 50 will be described. The information center 50 is provided with a center control unit 52 for controlling the entire center. The center control unit 52 uses the communication device 54 to perform data communication with the vehicle-side communication device 26. Further, a map database storage unit 56 is connected to the center control unit 52. The map database storage unit 56 stores the same map information as the map information stored on the vehicle side. The map information is used by the center control unit 52 to perform the same route calculation as that on the vehicle side.
[0025]
Further, a repair facility database storage unit 58 is connected to the center control unit 52. The storage unit 58 stores a database of dealers as repair facilities, as shown in the dealer information table of FIG. In the dealer information table, a name, an address, and position coordinates (latitude and longitude in the example of FIG. 2) of the address are associated with each dealer. In addition, the dealer information table shows a failure handling level and immediate response availability information for each dealer. The failure response level indicates the capability of the repair and maintenance shop provided at the dealer, and five levels A to E are set. Level A is the highest level. Higher level dealers are larger and have the ability to repair many types of failures. The immediate response availability information is information indicating whether or not repair of the failed vehicle can be started immediately when the failed vehicle is brought in. In FIG. 2, the symbol “即” means that immediate response is possible, the symbol “△” means that a short waiting time is required, and the symbol “X” means that it is impossible to respond today.
[0026]
The information center 50 constantly collects the latest information of each dealer by connecting the information center 50 and each dealer online, or obtaining a report from the dealer as appropriate. Using this latest information, the dealer information table in FIG. 2 is rewritten to the latest state in real time by the center control unit 52. For example, the stock status of replacement parts at each dealer is obtained at an information center. The type of failure that can be repaired changes according to the stock status of the replacement part, and the failure response level is rewritten. Also, depending on the number of vehicles being repaired and the number of workers, whether or not the brought-in faulty vehicle can be repaired immediately changes, and the immediate response availability information is rewritten.
[0027]
Further, a failure rank table storage unit 60 is connected to the center control unit 52. The storage unit 60 stores a failure rank table as shown in FIG. In this table, the diagnostic code is associated with the failure rank. When a diagnostic code is sent from a failed vehicle, the center control unit 52 obtains a failure rank by referring to this table. Five ranks A to E are set as failure ranks. The failure ranks A to E correspond to the failure handling levels A to E of the dealer, respectively. Faults classified into each fault rank can be repaired by a dealer having the same corresponding level as that rank and a dealer having a higher corresponding level. For example, a failure of rank C can be repaired by a dealer of failure handling levels A to C. In this way, when the diagnostic code is sent from the vehicle, the dealer having the ability to repair the failure occurring in the vehicle can be known by referring to the failure rank table and the dealer information table.
[0028]
As shown in FIG. 3, the failure rank table further shows prohibited items for each diagnostic code. The prohibited matter is one form of the restrictive condition (condition required for running the vehicle under the detected fault condition) of the present invention, and the prohibited matter indicates what driving method the vehicle should avoid. . In FIG. 3, examples of prohibited items include “the engine speed is 4000 rpm or more (prohibited code 0A)” and “the number of stops is large (prohibited code 0B)”. Crosses in the figure indicate prohibited items set for each diagnostic code. For example, a prohibition code 0A is set for the diagnosis code 02 as a prohibition item.
[0029]
For example, when a failure of a certain diagnostic code occurs, it is assumed that the engine speed is required to be suppressed so that the state of the engine is maintained even when the vehicle continues to run and does not deteriorate. It is also assumed that when a failure of a diagnostic code occurs, it is necessary to maintain a low vehicle speed for other reasons. Regarding these failures, the above-described prohibition code 0A is set as a prohibition item. Therefore, if the prohibited matter is observed, the vehicle will travel in an appropriate manner according to the failure state.
[0030]
The configuration of the information center 50 has been described above. In the information center 50, the map database storage unit 56, the repair facility database storage unit 58, and the failure rank table storage unit 60 may be provided separately, but a storage device integrating these storage units 56 to 60 may be used. It is also preferable to provide them.
[0031]
Next, route guidance performed when a failure occurs will be described. As the form of the route guidance, (A) “a form in which the information center creates a guide route and then sends the route to the vehicle” and (B) and (C) “a condition in which the information center sends the route creation condition to the vehicle” There is a form. Hereinafter, each embodiment will be described. One of these modes may be applied to the present system. In addition, a plurality of forms may be applied, and in this case, it is preferable that the form to be applied is different for each vehicle.
[0032]
(A) "Form in which information center creates route"
FIG. 4 is a flowchart showing the processing of this embodiment. When a failure occurs in the vehicle, the diagnosis device 24 of the navigation device 10 detects the occurrence of the failure and obtains a diagnostic code indicating the failure state (part or content) (S10). The diagnostic code is input to the navigation ECU 12. The navigation ECU 12 uses the display 18 and the speaker 20 to notify the user of the occurrence of the failure. Further, the navigation ECU 12 sends the diagnostic code to the information center 50 using the communication device 26 together with the current position information input from the GPS device 14 (S12). This data communication may be performed automatically or manually. In the case of manual operation, preferably, the navigation ECU 12 uses the display 18 and the speaker 20 to inquire the user about whether or not data communication is possible. The user uses the input device 16 to input permission for data communication.
[0033]
The communication device 54 of the information center 50 receives the diagnostic code and the current position and sends them to the center control unit 52. The center control unit 52 reads a failure rank and a prohibition code corresponding to the diagnostic code from the failure rank table (FIG. 3) in the failure rank table storage unit 60. Thereby, the failure rank corresponding to the failure that has occurred in the vehicle is determined (S14). Next, the center control unit 52 refers to the dealer information table (FIG. 2) stored in the repair facility database storage unit 58 and determines a candidate for a dealer for repairing the failure. Here, first, a dealer having a failure handling level equal to or higher than the determined failure rank is selected. The selected dealer has replacement parts for repair and has the ability to repair a failure of the corresponding failure rank. Further, from the dealers extracted as described above, a dealer with "immediate response possible (indicated by a circle in FIG. 2)" is selected. If there is no dealer that can respond immediately, a dealer with "a little time waiting (indicated by △ in FIG. 2)" is selected. In this way, the candidates for the dealer in charge of the repair are narrowed down (S16). At this stage, it is also preferable to narrow down the dealer candidates to those that are somewhat closer to the current position by a method such as referring to the address or telephone number of the dealer.
[0034]
Next, the center control unit 52 calculates the distance between each dealer selected as a candidate and the current position based on the position coordinates of the dealer. Then, the center control unit 52 selects the dealer closest to the current position from the candidates (S18).
[0035]
The center control unit 52 further calculates a route from the current position to the dealer selected in S18 (S20). Here, the map information in the map database storage unit 56 is used. The starting point of the route calculation is the current position, and the destination is the dealer. That is, this dealer corresponds to the failure handling destination of the present invention. In particular, in the present embodiment, a route is calculated based on the prohibited items read in S14, and a route that allows the user to easily keep the prohibited items is required. Therefore, the calculated route is a fault-adaptive route of the present invention, that is, a route suitable for traveling according to the fault state.
[0036]
The processing up to S20 will be described using a specific example. It is assumed that the diagnostic code obtained by the diagnostic device 24 on the vehicle side is code 02. In step S14, the center control unit 52 on the center side refers to the table of FIG. 3 to obtain the failure rank C and the prohibition code 0A corresponding to the diagnosis code 02. Since the failure rank is C, the table of FIG. 2 is referred to in S16, and dealers with failure response levels A to C are searched, and further, dealers that can immediately respond are searched. The dealers selected include the dealers at the second tier from the top in FIG. 2 (B level, ready to respond). Further, in S18, the dealer closest to the current position is selected. Then, a route to the dealer selected in S18 is obtained (S20). Here, the prohibition code 0A means "prohibition is performed when the engine speed is 4000 rpm or more". Therefore, a route that can reach the dealer while maintaining a low vehicle speed is preferable. Therefore, in S20, a route that passes through a road with a low speed limit is searched and set.
[0037]
FIG. 5 shows a specific example of the failure handling path. A thick line in the figure indicates a road with a high speed at a speed limit of 60 km. On the other hand, a thin line indicates a road with a speed limit of 40 km and a relatively small traffic volume. The destination dealer for the route calculation is indicated by a double circle. The route A (dotted line) on the left side of FIG. 5 is the shortest route between the failure occurrence point (current position) and the dealer. In the case of a normal route calculation, the route A is set. However, here, the route B (dotted line) on the right side of FIG. 5 is set based on the prohibition code 0A. Route B is not the shortest route, but runs on a road with a low speed limit. Therefore, when traveling along the route B, the user can easily drive the vehicle to the dealer in a manner that follows the prohibited items.
[0038]
Examples of other prohibited items will be described. As shown in FIG. 3, the prohibited items include “prohibition of running with a large number of stops (code 0B)”. When the prohibition code 0B is set, it is desirable to reach the dealer with as few stops as possible. Therefore, a route with a small number of traffic lights and temporary stops is searched. In addition, a route that does not pass through a congested road or a road under construction is searched for with reference to the traffic information. In a normal route calculation, a road in a traffic jam is avoided for the purpose of shortening the arrival time (travel time) to a destination. However, in this case, a busy road is avoided in order to reduce the number of stops.
[0039]
In other examples, when “right turn prohibition” is set as the prohibited matter, a route that can reach the dealer only by turning left is searched for. In addition, different prohibited items are set according to the type of failure, that is, according to the diagnostic code, and different routes are set according to the prohibited items. Note that a plurality of prohibited items may be set for one diagnostic code. At this time, a route is set such that all the prohibited items are protected.
[0040]
In the present embodiment, prohibited items are set for each diagnostic code. On the other hand, a similar effect can be obtained by setting a recommendation for each diagnostic code. The recommendation is, for example, a matter such as "running at an engine speed of 4000 rpm or less". Further, for example, the recommendation is a matter such as "run in the left lane (lane from the road side) in plural lanes". In this case, a route that can keep the recommendation is set. Therefore, a route including a right turn on a road with a plurality of lanes is not set.
[0041]
Returning to FIG. 4, the processing of S22 and subsequent steps will be described. The center control unit 52 sends the location of the dealer in charge of the repair, the route set in S20, and the prohibited matter corresponding to the diagnostic code to the vehicle using the communication device 54 (S22). These pieces of information are received by the communication device 26 of the navigation device 10 and sent to the navigation ECU 12. The navigation ECU 12 uses the input information to provide route guidance for failure (S24).
[0042]
In S24, if the normal route guidance was performed before the occurrence of the failure, the normal route guidance is stopped. Then, first, the dealer at the destination is displayed on the display 18, and then, the prohibited items are displayed on the display 18, and the user is instructed to follow the prohibited items until the vehicle reaches the dealer. The dealer or the prohibited matter may be communicated to the user by voice using the speaker 20. Further, a map as shown in FIG. 5 is displayed on the display 18 to show the current position, the position of the dealer, and the route to the dealer. Then, voice guidance for guiding the vehicle along the route is output as appropriate.
[0043]
The user drives the vehicle according to the guidance of the navigation device 10. As described above, the route to the dealer is a failure adaptive route set based on the prohibited matter. Therefore, the user can easily follow the prohibited items and run the vehicle in a manner of running according to the failure state of the vehicle.
[0044]
The route guidance in the mode (A) has been described above with reference to FIG. Regarding the processing of FIG. 4, the following modifications are conceivable. In FIG. 4, the route from the current position to the nearest dealer is obtained in S18 and S20. However, if the dealer is the destination, it may not be possible to set a route that can keep the prohibited items. In the specific example described above, there is a case where it is impossible to reach the dealer without passing through a road with a high speed limit. In such a case, the process returns to S18, where the dealer closest to the current position is selected, and the route to this dealer is calculated. In this way, dealers closer to the current position are sequentially set as destinations, and the route calculation is repeated until a suitable route is found.
[0045]
Another modification of the processing in FIG. 4 will be described. In the present embodiment, since the route calculation is performed based on the prohibited items, the route resulting from the calculation is not likely to be the shortest route to the dealer in many cases. Therefore, in FIG. 4, although the nearest dealer is the destination, a detour route may be set. As a result, the path length may be shorter when another dealer is selected. Therefore, in this modified example, a plurality of dealers are selected in S18. For example, ten dealers are selected in order from the closest to the current position. Then, a route to each dealer is calculated. The path lengths are compared and the dealer corresponding to the shortest path is selected.
[0046]
(B) "A form in which the information center sends the route creation condition to the vehicle (1)"
In the above embodiment (A), a failure adaptation route is sent from the information center to the vehicle. On the other hand, in this embodiment, a route creation condition for setting a similar route is sent instead of the route. In particular, in this embodiment, the position of the dealer and parameters for route calculation are sent as route creation conditions.
[0047]
In the route guidance of this embodiment, the same processing as the above (A) is performed until S20 in FIG. In S20, a failure handling path to the dealer is calculated. Next, the center control unit 52 obtains a relay point existing on the route as a parameter for route calculation. In the example of FIG. 5, for example, intersections a and b on the route are obtained. The center control unit 52 sends these relay points to the vehicle together with the position of the dealer. At this time, as described above, the prohibited matter is also sent to the vehicle.
[0048]
On the vehicle side, the navigation ECU 12 calculates a route to the dealer using the relay point as a parameter. Here, the map information in the map database storage unit 22 is used. The starting point is the current position (failure occurrence point), and the destination is the position of the dealer. In the route calculation, a route passing through a relay point (intersections a and b in FIG. 5) is obtained. As a result, the calculated route becomes the same as the route calculated on the center side. Using the calculated route, the same route guidance as in the form of (A) is performed.
[0049]
In this mode (B), the relay point as a parameter may be any as long as it can specify a failure adaptive path. That is, the same route as the route set using the prohibited items may be calculated by applying the relay point. It is preferable to find the minimum number of relay points within a range where the route can be specified. In addition, a parameter other than a relay point may be used as long as a route can be specified. For example, the parameter may be a road through which the vehicle should pass. In the example of FIG. 5, the road c is selected as a parameter. This is because if a route that passes through the road c is calculated, a failure adaptive route (dotted line) is obtained as a calculation result. In this mode (B), the route is calculated on the center side, but this route calculation may be omitted as appropriate.
[0050]
(C) “A form in which the information center sends the route creation condition to the vehicle (2)”
Also in this mode, the information center sends a route creation condition to the vehicle instead of the failure adaptive route. However, here, the position of the dealer and the prohibited items are sent as the route creation conditions.
[0051]
FIG. 6 is a flowchart showing the processing of this mode (C). The processing up to S18 is the same as the processing of the mode (A) described using FIG. The dealer selected in S18 is the dealer closest to the current position among the dealers that can immediately repair the malfunction that has occurred in the vehicle. In S30, the position of the dealer and the prohibited items read from the failure rank table of FIG. 3 are transmitted to the vehicle.
[0052]
In the vehicle, the position of the dealer and the prohibited items are received by the communication device 26 and sent to the navigation ECU 12. The navigation ECU 12 calculates a route to the dealer using the input information (S32). Here, the map information in the map database storage unit 22 is used. Then, the same route calculation as the calculation performed on the center side in the mode (A) is performed. Accordingly, a route calculation based on the prohibited matter is performed, and a route that allows the user to easily comply with the prohibited matter, that is, a failure adaptive route is obtained. Using this route and the prohibited items, the same route guidance as in the mode (A) is performed (S34).
[0053]
As described above, in the mode (C), the prohibited matter corresponds to the route creation condition. Then, the route calculation based on the prohibited matter is performed on the vehicle side. Whichever of the center and the vehicle is in charge of the route calculation, the calculated route is the same. This is because the prohibited items as the route creation conditions are the same. Therefore, also in this mode (C), the user can easily drive the vehicle to the dealer according to the route guidance in a manner corresponding to the failure state of the vehicle.
[0054]
As described in the modification of the above-described embodiment (A), the route guidance to the dealer closest to the current position may not be optimal. In consideration of such a case, it is also preferable that the information center sends the positions of a plurality of dealers close to the current position to the vehicle. An optimal dealer is selected in the same manner as in the modification of the embodiment (A).
[0055]
The preferred embodiment of the present invention has been described above. As described above, in the present embodiment, the prohibited items corresponding to the failure state of the vehicle are set, and a route to a dealer as a repair facility is determined based on the prohibited items. At this time, a route that can easily comply with the prohibited items, that is, a route that allows the vehicle to travel in an appropriate manner according to the failure state is set. Even if the route to the same dealer is different, the route is changed if the faulty part or the content is different. The user easily drives the vehicle in an appropriate driving manner according to the route guidance using the failure adaptive route. Therefore, maintenance of the failure state, that is, prevention of deterioration of the failure state is achieved, and it is possible to appropriately cope with occurrence of the failure, for example, it is possible to make the vehicle run more safely.
[0056]
In the present embodiment, data communication between the information center and the vehicle is used. However, the present invention is not limited to such a configuration. For example, the navigation device 10 may have a dealer information table and a failure rank table. In this case, the navigation device 10 can independently provide route guidance for failure.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an overall configuration of an embodiment of the present invention.
FIG. 2 is a diagram showing a dealer information table stored in an information center of the system of FIG. 1;
FIG. 3 is a diagram showing a failure rank table stored in an information center of the system of FIG. 1;
FIG. 4 is a flowchart showing route guidance processing by the system of FIG. 1 when a failure occurs.
FIG. 5 is a diagram showing a fault adaptation path set when a fault occurs.
FIG. 6 is a flowchart showing a route guidance process by the system of FIG. 1 when a failure occurs.
[Explanation of symbols]
Reference Signs List 10 navigation device, 12 navigation ECU, 14 GPS device, 22, 56 map database storage unit, 24 diagnosis device, 50 information center, 52 center control unit, 58 repair facility database storage unit, 60 failure rank table storage unit.

Claims (5)

A vehicle guidance device that provides route guidance using a route to a destination,
Failure state detection means for detecting a failure state of the vehicle;
Route guidance means for providing route guidance to a failure handling destination when a failure occurs,
Has,
The vehicle guidance device, wherein the route guidance means uses a failure adaptive route, which is a route suitable for traveling according to a failure state, as the route to the failure corresponding destination for route guidance. The apparatus according to claim 1 ,
The failure guidance destination is a repair facility selected based on a failure state. The device according to claim 1 or 2 ,
The vehicle guidance device according to claim 1, wherein the failure adaptation route is set based on a restriction condition required for running the vehicle under the detected failure state. The apparatus according to any one of claims 1 to 3,
Having communication means for performing data communication with the information center,
The fault condition and the current position of the vehicle are transmitted to the information center, the fault adaptive route set on the center side based on the fault condition and the current position is received from the information center, and route guidance is performed using the received fault adaptive route. A vehicle guidance device characterized by performing: A vehicle guidance system including a guidance device mounted on a vehicle and an information center performing data communication with the guidance device, wherein the guidance device performs route guidance using a route to a destination,
The guide device,
Current position detecting means for detecting the current position of the vehicle,
Failure state detection means for detecting a failure state of the vehicle;
Transmitting the current position and the failure state to the information center,
The information center comprises:
It has a search means for searching for a repair facility that can repair the failure indicated by the failure state and is close to the current position, creates a route to the repair facility, or obtains route creation conditions for creating the route, and creates the route. Or send the route creation conditions to the guidance device,
A vehicle guidance system, wherein a route to the repair facility is set to be a failure adaptive route suitable for traveling according to a failure state of the vehicle.

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