Vehicular relay device, in-vehicle communication system, failure diagnostic system, vehicle management device, server device and detection and diagnostic program
First Claim
1. A vehicular relay device, which is located between an in-vehicle LAN and a communication device that performs data communication with an external device located outside of a vehicle, wherein the in-vehicle LAN is arranged in the vehicle and is connected with a plurality of in-vehicle electronic devices, and the vehicular relay device relays communication between the external device and the in-vehicle electronic devices, the vehicular relay device comprising:
- a first identifying means, which identifies a requested in-vehicle electronic device from the in-vehicle electronic devices based on an access request for requesting access to the requested in-vehicle electronic device upon reception of the access request from the external device and determines whether the access request requires authentication of the external device based on a result of identification of the requested in-vehicle electronic device;
a first authenticating means, which determines whether the external device has been authorized to access the in-vehicle electronic devices based on first authentication information, which is transmitted from the external device, when the first identifying means determines that the access request requires the authentication of the external device; and
a first delivering means, which delivers communication data transmitted from the external device through the communication device to the requested in-vehicle electronic device when the first authenticating means determines that the external device has been authorized to access the in-vehicle electronic devices or when the first identifying means determines that the access request requires no authentication of the external device.
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Accused Products
Abstract
A gateway ECU identifies a requested ECU from a plurality of ECUs through a LAN based on an access request of an external device for requesting access to the requested ECU and determines whether the external device has been authorized to access the ECUs based on first authentication information of the external device. Furthermore, the gateway ECU determines whether a trouble of the vehicle currently exists based on data transmitted from each ECU through the LAN. If the trouble exists, the gateway identifies a failed part, which causes the current trouble in the vehicle, based on information transmitted from each corresponding ECU by executing a detection and diagnostic program obtained from a customer server.
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Citations
24 Claims
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1. A vehicular relay device, which is located between an in-vehicle LAN and a communication device that performs data communication with an external device located outside of a vehicle, wherein the in-vehicle LAN is arranged in the vehicle and is connected with a plurality of in-vehicle electronic devices, and the vehicular relay device relays communication between the external device and the in-vehicle electronic devices, the vehicular relay device comprising:
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a first identifying means, which identifies a requested in-vehicle electronic device from the in-vehicle electronic devices based on an access request for requesting access to the requested in-vehicle electronic device upon reception of the access request from the external device and determines whether the access request requires authentication of the external device based on a result of identification of the requested in-vehicle electronic device;
a first authenticating means, which determines whether the external device has been authorized to access the in-vehicle electronic devices based on first authentication information, which is transmitted from the external device, when the first identifying means determines that the access request requires the authentication of the external device; and
a first delivering means, which delivers communication data transmitted from the external device through the communication device to the requested in-vehicle electronic device when the first authenticating means determines that the external device has been authorized to access the in-vehicle electronic devices or when the first identifying means determines that the access request requires no authentication of the external device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An in-vehicle communication system comprising:
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an in-vehicle LAN, which is arranged in a vehicle and is connected with a plurality of in-vehicle electronic devices;
a communication device that performs data communication with an external device located outside of the vehicle; and
a vehicular relay device, which is located between the communication device and the in-vehicle LAN and relays communication between the external device and the in-vehicle electronic devices, wherein the vehicular relay device including;
a first identifying means, which identifies a requested in-vehicle electronic device from the in-vehicle electronic devices based on an access request for requesting access to the requested in-vehicle electronic device upon reception of the access request from the external device and determines whether the access request requires authentication of the external device based on a result of identification of the requested in-vehicle electronic device;
a first authenticating means, which determines whether the external device has been authorized to access the in-vehicle electronic devices based on first authentication information, which is transmitted from the external device, when the first identifying means determines that the access request requires the authentication of the external device; and
a first delivering means, which delivers communication data transmitted from the external device through the communication device to the requested in-vehicle electronic device when the first authenticating means determines that the external device has been authorized to access the in-vehicle electronic devices or when the first identifying means determines that the access request requires no authentication of the external device. - View Dependent Claims (8)
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9. A failure diagnostic system comprising:
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a plurality of electronic control devices, which are interconnected through an in-vehicle network, wherein each electronic control device stores a failure detection program, which is executed to detect a failure of a vehicle during control operation of a controlled apparatus controlled by the electronic control device; and
a vehicle management device, which communicates with the electronic control devices through the in-vehicle network to manage the failure of the vehicle, wherein the vehicle management device includes;
a trouble determining means for determining whether a trouble of the vehicle currently exists based on data transmitted from each electronic control device through the in-vehicle network;
a program obtaining means for obtaining a corresponding detection and diagnostic program corresponding to the current trouble when the trouble determining means determines that the trouble of the vehicle currently exists, wherein the corresponding detection and diagnostic program is previously prepared to handle the current trouble;
a failed part identifying means for identifying a failed part, which causes the current trouble in the vehicle, based on information transmitted from each corresponding electronic control device by executing the corresponding detection and diagnostic program obtained by the program obtaining means, wherein the execution of the corresponding detection and diagnostic program, in turn, causes execution of an associated process in each corresponding electronic control device, so that the information is outputted from each corresponding electronic control device to the failed part identifying means; and
an information outputting means for outputting failure information relevant to the failed part based on a result obtained through operation of the failed part identifying means. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A vehicle management device, which is used together with a plurality of electronic control devices, which are interconnected through an in-vehicle network, wherein each electronic control device stores a failure detection program, which is executed to detect a failure of a vehicle during control operation of a controlled apparatus controlled by the electronic control device, and the vehicle management device communicates with the electronic control devices through the in-vehicle network to manage the failure of the vehicle, the vehicle management device comprising:
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a trouble determining means for determining whether a trouble of the vehicle currently exists based on data transmitted from each electronic control device through the in-vehicle network;
a program obtaining means for obtaining a corresponding detection and diagnostic program corresponding to the current trouble when the trouble determining means determines that the trouble of the vehicle currently exists, wherein the corresponding detection and diagnostic program is previously prepared to handle the current trouble;
a failed part identifying means for identifying a failed part, which causes the current trouble in the vehicle, based on information transmitted from each corresponding electronic control device by executing the corresponding detection and diagnostic program obtained by the program obtaining means, wherein the execution of the corresponding detection and diagnostic program, in turn, causes execution of an associated process in each corresponding electronic control device, so that the information is outputted from each corresponding electronic control device to the failed part identifying means; and
an information outputting means for outputting failure information relevant to the failed part based on a result obtained through operation of the failed part identifying means.
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23. A server device, which constitutes part of a failure diagnostic system, wherein the failure diagnostic system also includes a plurality of electronic control devices and a vehicle management device, wherein the electronic control devices are interconnected through an in-vehicle network, and each electronic control device stores a failure detection program, which is executed to detect a failure of a vehicle during control operation of a controlled apparatus controlled by the electronic control device, and the vehicle management device communicates with the electronic control devices through the in-vehicle network to manage the failure of the vehicle, the server device comprising:
a storage means, which stores a plurality of detection and diagnostic programs each linked to its relevant trouble information indicative of one of troubles of the vehicle, wherein when an inquiry information, which includes current trouble information indicative of a current trouble of the vehicle, is received from the vehicle management device, the server device searches for a corresponding detection and diagnostic program stored in the storage means based on the current trouble information and transmits the corresponding detection and diagnostic program to the vehicle management device, and the vehicle management device executes the corresponding detection and diagnostic program to cause execution of an associated process in each corresponding electronic control device, so that information is outputted from each corresponding electronic control device to the vehicle management device, and a failed part, which causes the current trouble of the vehicle, is identified by the vehicle management device based on the information of each corresponding electronic control device.
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24. A detection and diagnostic program executed in a vehicle management device, which constitutes part of a failure diagnostic system, wherein the failure diagnostic system also includes a plurality of electronic control devices, which are interconnected through an in-vehicle network, wherein each electronic control device stores a failure detection program, which is executed to detect a failure of a vehicle during control operation of a controlled apparatus controlled by the electronic control device, and the vehicle management device communicates with the electronic control devices through the in-vehicle network to manage the failure of the vehicle, the detection and diagnostic program comprising instructions for:
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executing an associated process in each corresponding electronic control device, so that information is outputted from each corresponding electronic control device to the vehicle management device; and
identifying a failed part of the vehicle based on the information of each corresponding electronic control device.
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Specification