KR20200124472A - Apparatus for diagnosis error of a vehicle, system having the same and method thereof - Google Patents

Abstract

The present invention relates to a vehicle trouble diagnosis device, a system including the same, and a method thereof. The vehicle trouble diagnosis device according to an embodiment of the present invention can include: a processor that diagnoses CAN communication troubles of all controllers connected to a CAN communication line and generates CAN communication diagnosis data for each controller when receiving a CAN communication diagnosis request message from at least one in-vehicle controller connected to the CAN communication line; and a storage unit for storing information on all controllers connected to the CAN communication line and the CAN communication diagnosis data generated by the processor.

Description

Vehicle fault diagnosis device, system including the same, and method thereof TECHNICAL FIELD

The present invention relates to a vehicle failure diagnosis apparatus, a system including the same, and a method thereof, and more particularly, to a failure diagnosis technology related to CAN communication.

Intermittent failures related to CAN communication may occur while driving in a vehicle. However, in the case of such an intermittent can communication failure, when the vehicle is put into a repair shop, the can communication problem disappears, and thus it is difficult to identify the defective part.

Accordingly, a technology for generating a CAN communication failure code by detecting a time-out failure during CAN communication is applied, but in the case of such a failure code, there is a problem in that the failure part cannot be accurately known.

Accordingly, when a CAN communication failure occurs in a vehicle, there is a need for a method to accurately identify the faulty part, and in particular, there is a need for a method to enable immediate failure diagnosis when a CAN communication failure diagnosis occurs while driving the vehicle.

An embodiment of the present invention is a vehicle failure diagnosis device capable of immediately diagnosing the occurrence of a CAN communication-related failure code (Time Out/bus-off/message error) while driving a vehicle and accurately confirming the failure area during future maintenance, It is intended to provide a system including and method thereof.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

When receiving a CAN communication diagnosis request message from at least one in-vehicle controller connected to the CAN communication line, the vehicle failure diagnosis apparatus according to an embodiment of the present invention diagnoses the CAN communication failure of all controllers connected to the CAN communication line. A processor for generating CAN communication diagnostic data for each controller; And a storage unit for storing information on all controllers connected to the CAN communication line and diagnostic data for CAN communication generated by the processor.

In one embodiment, the vehicle failure diagnosis device may include a vehicle gateway device.

In one embodiment, the CAN communication diagnostic data may include a CAN communication message by the processor for each controller connected to the same CAN communication line as the controller that transmitted the CAN communication diagnosis request message and the controller that sent the CAN communication diagnosis request message. It may include the number of times of transmitting and the number of times of receiving response messages for each controller for the transmitted CAN communication message.

In one embodiment, the processor transmits a CAN communication message to all the controllers at least a predetermined number of times at a predetermined time, receives a response message from the at least one or more controllers, and communicates the CAN communication for each of the controllers. It may include storing the number of times the message is transmitted and the number of times the response message is received.

In one embodiment, the processor transmits the CAN communication message a predetermined number of times to all controllers connected to the same CAN communication line as the controller that transmitted the CAN communication diagnosis request message each time the CAN communication diagnosis request message is received. And receiving a response message to the CAN communication message.

In one embodiment, the processor includes, for each controller, a number of transmissions of CAN communication messages transmitted to the controller and a number of receptions of response messages received from the controller each time the CAN communication diagnosis request message is received. It may include generating the CAN communication diagnostic data.

A vehicle system according to an embodiment of the present invention includes a plurality of CAN communication lines; At least one controller connected to each of the plurality of CAN communication lines; When a CAN communication diagnosis request message is received from at least one in-vehicle controller connected to the plurality of CAN communication lines, diagnosis of CAN communication failure of all controllers connected to the CAN communication line to which the controller that transmitted the CAN communication diagnosis request message is connected A vehicle failure diagnosis device for generating and storing CAN communication diagnosis data for each controller; It may include.

In one embodiment, the at least one controller detects the time-out or bus-off failure in real time, and transmits the CAN communication diagnosis request message to the vehicle failure diagnosis apparatus when the time-out or bus-off failure is detected. May include doing.

In one embodiment, the vehicle failure diagnosis apparatus, each time the CAN communication diagnosis request message is received, all the controllers connected to the same CAN communication line as the controller that transmitted the CAN communication diagnosis request message, the number of can It may include transmitting a communication message and receiving a response message to the CAN communication message.

In one embodiment, the vehicle failure diagnosis apparatus transmits a CAN communication message to each of the at least one controller a predetermined number of times or more at a predetermined time, and receives a response message to the CAN communication message, and the controller It may include generating and storing the CAN communication diagnostic data including the number of transmissions of CAN communication messages and the number of receptions of the response message.

In an embodiment, the vehicle failure diagnosis apparatus transmits a CAN communication message to each of the at least one or more controllers a predetermined number of times or more each time the CAN communication diagnosis request message is received, and responds to the CAN communication message. Receiving a message may include generating and storing the CAN communication diagnostic data including the number of times the CAN communication message is transmitted and the number of times the response message is received for each controller.

A vehicle failure diagnosis method according to an embodiment of the present invention includes: receiving a CAN communication diagnosis request message from at least one in-vehicle controller connected to the CAN communication line; Diagnosing CAN communication failure of all controllers connected to the same CAN communication line as the controller that transmitted the CAN communication diagnosis request message, and generating CAN communication diagnosis data for each controller; And storing CAN communication diagnosis data for each controller.

In one embodiment, the CAN communication diagnosis data includes a controller that has transmitted the CAN communication diagnosis request message, and a controller connected to the same CAN communication line as the controller that transmitted the CAN communication diagnosis request message for each controller. It may include the number of times of transmission and the number of times of receiving response messages for each controller for the transmitted CAN communication message.

In one embodiment, the generating of the CAN communication diagnostic data for each controller includes: transmitting a CAN communication message to the at least one in-vehicle controller at a predetermined number of times or more at predetermined time intervals; Receiving a response message from the at least one controller; And generating the CAN communication diagnosis data by storing the number of transmissions of the CAN communication message to the at least one controller and the number of receptions of the response message to the CAN communication message for each controller.

In one embodiment, the generating of the CAN communication diagnosis data for each controller comprises, whenever the CAN communication diagnosis request message is received, all of the CAN communication lines connected to the same CAN communication line as the controller that transmitted the CAN communication diagnosis request message Transmitting the CAN communication message to the controller a predetermined number of times; Receiving a response message to the CAN communication message; And generating and storing the CAN communication diagnostic data including the number of transmissions of the CAN communication message and the number of receptions of the response message for each of the controllers.

This technology immediately diagnoses when a CAN communication-related fault code occurs while driving a vehicle (Time Out/bus-off/message error), so that a mechanic can easily check the fault area later.

In addition to this, various effects that are directly or indirectly identified through this document can be provided.

1 is a block diagram illustrating a configuration of a vehicle system including a vehicle failure diagnosis apparatus according to an exemplary embodiment of the present invention.
2 is a detailed configuration diagram of a vehicle failure diagnosis apparatus according to an embodiment of the present invention.
3 is an exemplary diagram of CAN communication diagnosis data stored in a vehicle failure diagnosis apparatus according to an embodiment of the present invention.
4 is a flowchart illustrating a vehicle failure diagnosis method according to an exemplary embodiment of the present invention.
5 is a flowchart illustrating a process of storing CAN communication diagnostic data in a vehicle failure diagnosis apparatus according to an embodiment of the present invention.
6 is a flowchart illustrating a process of transmitting a CAN communication diagnosis request message by a controller of a vehicle CAN communication line according to an embodiment of the present invention.
7 illustrates a computing system according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to elements of each drawing, it should be noted that the same elements are assigned the same numerals as possible even if they are indicated on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function obstructs an understanding of the embodiment of the present invention, a detailed description thereof will be omitted.

In describing the constituent elements of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the component is not limited by the term. In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

The present invention discloses a technology capable of accurately identifying the faulty part by diagnosing and storing a faulty part in real time when a can communication failure in a vehicle occurs, and providing can communication diagnosis data to a repair shop terminal later.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 7.

1 is a block diagram showing the configuration of a vehicle system including a vehicle failure diagnosis apparatus according to an embodiment of the present invention, and FIG. 2 is a detailed configuration diagram of a vehicle failure diagnosis apparatus according to an embodiment of the present invention. 3 is an exemplary diagram of CAN communication diagnosis data stored in a vehicle failure diagnosis apparatus according to an embodiment of the present invention.

Referring to FIG. 1, a vehicle system according to an embodiment of the present invention may include a vehicle failure diagnosis apparatus 100 and a plurality of controllers. In addition, the vehicle system according to an embodiment of the present invention may include a cluster, a PCM, a self-diagnosis point terminal, a multi-function check connector, and the like as shown in FIG. 1. At this time, the plurality of controllers may be connected through communication lines such as P-CAN/C-CAN/B-CAN/M-CAN/LIN/KWP2000, and in FIG. 1, PCM, A controller, B controller, C controller D controller Is connected to the P-CAN communication line, and the cluster, E controller, F controller, G controller, and H controller are connected to the C-CAN communication line. In this case, the vehicle failure diagnosis apparatus 100 may be a gateway device of a vehicle.

Upon receiving the CAN communication diagnosis request message from at least one in-vehicle controller connected to the CAN communication line, the vehicle failure diagnosis apparatus 100 diagnoses the CAN communication failure of all controllers connected to the CAN communication line, and diagnoses CAN communication for each controller. You can create and store data. Accordingly, when a request for transmission of CAN communication diagnostic data is received from a workshop terminal in the future, the stored CAN communication diagnostic data is provided so that a faulty part can be accurately identified.

The vehicle failure diagnosis apparatus 100 may include a communication unit 110, a storage unit 120, and a processor 130.

The communication unit 110 is a hardware device implemented with various electronic circuits to transmit and receive signals through a wireless or wired connection.In the present invention, in-vehicle communication is performed through can communication, LIN communication, etc. And, it is possible to communicate with controllers connected to each communication line.

The storage unit 120 may store a list of all controllers connected to the CAN communication line and CAN communication diagnostic data acquired by the processor 130. The storage unit 120 is a flash memory type, a hard disk type, a micro type, and a card type (e.g., an SD card (Secure Digital Card) or an XD card (eXtream Digital)). Card)), RAM (Random Access Memory), SRAM (Static RAM), ROM (Read-Only Memory), PROM (Programmable ROM), EEPROM (Electrically Erasable PROM), Magnetic Memory (MRAM) , Magnetic RAM), a magnetic disk, and an optical disk type of memory. The storage medium may include at least one type of storage medium.

The processor 130 can be electrically connected to the communication unit 110, the storage unit 120, and the like, can electrically control each component, and can be an electric circuit that executes a command of software. Data processing and calculation can be performed.

When the processor 130 receives the CAN communication diagnosis request message from at least one in-vehicle controller connected to the CAN communication line, it diagnoses the CAN communication failure of all controllers connected to the CAN communication line and generates CAN communication diagnosis data for each controller. can do.

In this case, the CAN communication diagnosis data is the number of times the CAN communication message is transmitted to the controllers that have transmitted the CAN communication diagnosis request message, the controllers that are connected to the same CAN communication line as the controller that has transmitted the CAN communication diagnosis request message, and It may include the number of times the response message is received by the controllers for the transmitted CAN communication message.

The processor 130 transmits CAN communication messages more than a predetermined number of times to all controllers at each predetermined time, receives response messages from all controllers, and receives CAN communication message transmission times and response messages for each controller ( The number of successful reception) can be stored.

Whenever the CAN communication diagnosis request message is received, the processor 130 transmits the CAN communication message a predetermined number of times to all controllers connected to the same CAN communication line as the controller that transmitted the CAN communication diagnosis request message, and You can receive a response message.

Accordingly, whenever the CAN communication diagnosis request message is received, the processor 130 may generate CAN communication diagnosis data including the number of transmissions of the CAN communication message and the number of receptions of the response message for every controller.

As described above, the present invention diagnoses can communication failures that occur intermittently while the vehicle is running, immediately diagnoses the vehicle failure diagnosis device (gateway) as soon as the failure occurs, stores the information, and provides the corresponding information to the repair shop terminal to easily determine the cause of the failure. You can check.

In the present invention, by performing a flow for fault diagnosis in a vehicle gateway (vehicle fault diagnosis device), the controllers on the CAN communication line connected to the vehicle gateway do not need to transmit and receive communication messages for fault diagnosis respectively. It is possible to reduce the load and minimize the cost and time consumption by changing only the software of the gateway without changing the software of the controllers even if the controller arrangement in the vehicle is changed.

Hereinafter, a method for diagnosing a vehicle failure according to an embodiment of the present invention will be described in detail with reference to FIG. 4. 4 is a flowchart illustrating a vehicle failure diagnosis method according to an exemplary embodiment of the present invention.

Hereinafter, it is assumed that the vehicle failure diagnosis apparatus 100 of FIG. 1, controller A, controller B, and controller C connected to the P-CAN communication line perform the process of FIG. 4. In addition, in the description of FIG. 4, the operation described as being performed by the vehicle failure diagnosis apparatus 100 may be understood as being controlled by the processor 130 of the vehicle failure diagnosis apparatus 100.

Referring to FIG. 4, when controller A detects a CAN-related failure (timeout, bus off, etc.) (S100), controller A transmits a CAN communication diagnosis request message to the vehicle failure diagnosis apparatus 100 (S200).

Accordingly, the vehicle failure diagnosis apparatus 100 transmits a CAN communication message for communication diagnosis to controller A, controller B, and controller C (S300). Accordingly, controller A, controller B, and controller C transmit a response message to the vehicle failure diagnosis apparatus 100 (S400). In this case, the controller in which the CAN communication failure has occurred cannot receive the CAN communication message or transmit a response message to the vehicle failure diagnosis apparatus 100.

At this time, the vehicle failure diagnosis apparatus 100 transmits a CAN communication message to each of the controller A, controller B, and controller C a predetermined number of times (eg, 10 times), and transmits a response message from controller A, controller B, and controller C. Can communication diagnostic data is generated and stored based on the number of times received (S500).

4 illustrates an example in which the CAN communication diagnosis request message is received only by controller A, and can communication diagnosis data can be stored as shown in Table 1 below.

[Table 1]

In Table 1, the gateway (vehicle fault diagnosis device) transmits 10 CAN communication messages to each of the PCM, controller A, controller B, and controller C connected to the same CAN communication line for a certain mileage or time, and 5 responses from PCM. An example will be described in which a signal is received, controller A receives a response signal 4 times, controller B receives a response signal 5 times, and controller C receives a response signal 3 times.

4 illustrates an example in which can-related failure is detected only in controller A, but is not limited thereto, and vehicle failure diagnosis apparatus 100 by detecting can-related failure at the same time or at different times by controller A, controller B, and controller C. Rocan communication diagnosis request message can be transmitted. In this case, the vehicle failure diagnosis apparatus 100 may perform a process (S103, S104) of transmitting the CAN communication message and receiving the response message for the controller B and the controller C. Accordingly, the CAN communication diagnostic data for each controller may store the number of times of message transmission and the number of successful receptions for each controller A, controller B, and controller C. As shown in Table 2 below

[Table 2]

That is, in Table 2, each of the PCM, gateway, controller A, controller B, and controller C transmits a CAN communication diagnosis request message to the vehicle failure diagnosis apparatus 100 for a certain driving distance or time, and the vehicle failure diagnosis apparatus 100 Whenever the CAN communication diagnosis request message is received from each controller, the CAN communication message for CAN communication diagnosis is transmitted to the PCM, A controller, B controller, and C controller, and a response message is received. It stores the number of times the response message is received (the number of successful receptions).

Referring to Table 2, the PCM, the gateway, the controller A, and the controller B may determine that when the number of CAN communication message transmissions is 10, the number of times the response message is received is also 10, and that all responses to the transmission of CAN communication messages have come. That is, it can be seen that PCM, gateway, controller A, and controller B do not have CAN communication failure.

However, in the case of controller C, the number of CAN communication messages is transmitted 10 times, but the number of reception of response messages is 4, 5, 5, 3, 4 circuits. It can be determined that it has occurred.

In addition, there are Tables 3 and 4 as another example of CAN communication diagnostic data.

[Table 3]

Table 3 shows cans when the cluster, gateway (vehicle fault diagnosis device), E controller, F controller, G controller, and H controller transmit the CAN communication diagnosis request message to the vehicle fault diagnosis device 100 for a certain mileage or time. This is an example of communication diagnostic data.

[Table 4]

Table 4 is an example of CAN communication diagnosis data when a PCM, C controller transmits a CAN communication diagnosis request message to a gateway (vehicle failure diagnosis device) for a certain driving distance or time.

Thereafter, when the vehicle arrives at the workshop for maintenance, the workshop terminal 200 requests CAN communication diagnostic data to the vehicle failure diagnosis apparatus 100 (S600), and the vehicle failure diagnosis apparatus 100 is shown in Table 1 or Table 1 The CAN communication diagnostic data as shown in 2 is transmitted to the workshop terminal 200 (S700). Accordingly, the repair shop terminal 200 may diagnose a CAN communication failure based on the CAN communication diagnosis data.

For example, when receiving CAN communication diagnostic data as shown in Table 1, the repair shop terminal 200 may estimate that an intermittent disconnection has occurred in a section between the vehicle failure diagnosis apparatus 100 at connector 4 of FIG. 1. .

When receiving the CAN communication diagnostic data as shown in Table 2, the repair shop terminal 200 can predict that the intermittent branch line disconnection of the C controller of FIG. 1, the C controller grounding problem, and the C controller power supply problem have occurred.

When receiving CAN communication diagnostic data as shown in Table 3, the workshop terminal 200 intermittent bus-off in the C-CAN line of FIG. 1 (e.g., main line/branch line mutual short/ground short/power short) ) Can be estimated.

When receiving the CAN communication diagnostic data as shown in Table 4, the workshop terminal 200 can estimate that an intermittent main line disconnection occurred in section ① of the P-CAN line of FIG. 1.

Hereinafter, a process of storing CAN communication diagnostic data in a vehicle failure diagnosis apparatus according to an embodiment of the present invention will be described with reference to FIG. 5. 5 is a flowchart illustrating a process of storing CAN communication diagnostic data in a vehicle failure diagnosis apparatus according to an embodiment of the present invention.

Hereinafter, it is assumed that the vehicle failure diagnosis apparatus 100 of FIG. 1 performs the process of FIG. 5. In addition, in the description of FIG. 5, it may be understood that the operation described as being performed by the apparatus is controlled by the processor 130 of the vehicle failure diagnosis apparatus 100.

The vehicle failure diagnosis device 100 updates all controller-related message reception information connected to all CAN communication lines (P-CAN/C-CAN/B-CAN/M-CAN/I-CAN) in real time to communicate CAN The number of times the response message is received for message transmission is stored (S101). At this time, the vehicle failure diagnosis apparatus 100 transmits CAN communication messages to all controllers at predetermined periods and stores whether or not reception of a response signal is successful. That is, it is possible to store the number of times the CAN communication message is transmitted and the number of times the response message corresponding to the transmission of the CAN communication message is successfully received during a predetermined time. For example, if the vehicle failure diagnosis apparatus 100 transmits 10 CAN communication messages to each controller within the last one week and the number of times the response message to 10 CAN communication messages has been successfully received is 5 times, “5/10 ”Can be saved. For example, when an EMS1 message (period 10ms) transmitted from the engine ECU is received, information on how many times EMS1 has been properly received during the last 100 times (10ms X 100 = 1s) is updated in real time. The vehicle failure diagnosis apparatus 100 receives CAN communication messages transmitted from all CAN communication controllers, and updates the same information as described above for other controllers in real time.

Thereafter, the vehicle failure diagnosis apparatus 100 checks whether a CAN communication diagnosis request message has been received from at least one controller (S102), and when a CAN communication diagnosis request message is received from at least one controller, the controller requesting the CAN communication diagnosis The CAN communication message is transmitted to all controllers connected to the CAN communication line, and can communication diagnostic data for each controller is generated and stored based on the number of times the response signal is received (S103).

Thereafter, the vehicle failure diagnosis apparatus 100 checks whether the CAN communication diagnostic data request message has been received from the repair shop terminal 200 (S104), and when receiving the CAN communication diagnostic data request message from the repair shop terminal 200, CAN communication The diagnostic data is transmitted to the workshop terminal (S105).

Hereinafter, a process of transmitting a CAN communication diagnosis request message by a controller of a vehicle CAN communication line according to an embodiment of the present invention will be described with reference to FIG. 6. 6 is a flowchart illustrating a process of transmitting a CAN communication diagnosis request message by a controller of a vehicle CAN communication line according to an embodiment of the present invention.

Hereinafter, it is assumed that each controller connected to the CAN communication line of the vehicle of FIG. 1 performs the process of FIG. 6. Each controller may have a processor for processing the process of FIG. 6 therein.

Each controller connected to the CAN communication line of the vehicle detects a time out or a bus-off failure in real time (S201). That is, each controller exchanges communication with each other, and when a response message is not received even if a predetermined time elapses when transmitting a CAN communication message, it can be detected that a failure has occurred. At this time, detection of a timeout or a bus off failure of each controller may be performed using a conventional method.

Accordingly, when it is detected that a timeout or bus off failure has occurred on another controller or the CAN communication line to which it is connected (S202), each controller connected to the CAN communication line of the vehicle sends a CAN communication diagnosis request message to the vehicle diagnosis device. It can be transmitted more than once (S203). For example, each controller connected to the CAN communication line of the vehicle repeatedly transmits the CAN communication diagnosis request message to the vehicle failure diagnosis apparatus 100 two to three times or more, and the vehicle failure diagnosis apparatus 100 is caused by intermittent failure. ) Can prevent the CAN communication diagnosis request message from being received.

In this case, the controller that transmits the CAN communication diagnosis request message may transmit information on the detected type of failure (eg, TCU time-out, P-CAN bus-off, etc.) together.

Each controller connected to the CAN communication line in the vehicle performs at least 10 times of sending and receiving communication attempt messages to all controllers connected to the CAN communication line when a CAN communication-related failure occurs.These operations are performed more than 10 times for each controller. If performed, the communication load may be applied. For example, if there are 10 controllers connected to one CAN communication line, 10 controllers transmit and receive messages 10 times, resulting in a total of 1000 communication loads. In addition, when each controller transmits and receives a communication attempt message, a logic for this should be implemented for each controller, and a memory for storing communication diagnostic data for each controller should be provided.

Accordingly, in the present invention, when the controller detects the occurrence of a CAN communication-related failure, the vehicle failure diagnosis apparatus 100 requests the CAN communication failure diagnosis to the vehicle failure diagnosis device 100, which is a vehicle gateway device, so that the vehicle failure diagnosis apparatus 100 tries to communicate with each controller 10 times. By sending and receiving messages, the communication load can be reduced to 100. In addition, when each controller transmits and receives a communication attempt message, it is not necessary to have a memory for storing logic and communication diagnostic data for this, thereby reducing cost.

In addition, when the controller arrangement is changed when the vehicle is changed, the software of each controller needs to be updated. In the present invention, even if the controller arrangement is changed according to the vehicle change, only the software of the vehicle failure diagnosis apparatus 100 needs to be updated.

7 illustrates a computing system according to an embodiment of the present invention.

Referring to FIG. 7, the computing system 1000 includes at least one processor 1100, a memory 1300, a user interface input device 1400, a user interface output device 1500, and storage connected through a bus 1200. (1600), and a network interface (1700).

The processor 1100 may be a central processing unit (CPU) or a semiconductor device that processes instructions stored in the memory 1300 and/or the storage 1600. The memory 1300 and the storage 1600 may include various types of volatile or nonvolatile storage media. For example, the memory 1300 may include read only memory (ROM) and random access memory (RAM).

Accordingly, the steps of the method or algorithm described in connection with the embodiments disclosed herein may be directly implemented as hardware, software modules, or a combination of the two executed by the processor 1100. Software modules reside in storage media (i.e., memory 1300 and/or storage 1600) such as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM. You may.

An exemplary storage medium is coupled to the processor 1100, which is capable of reading information from and writing information to the storage medium. Alternatively, the storage medium may be integral with the processor 1100. The processor and storage media may reside within an application specific integrated circuit (ASIC). The ASIC may reside within the user terminal. Alternatively, the processor and storage medium may reside as separate components within the user terminal.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention.

Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

Claims (15)

A processor for diagnosing CAN communication failure of all controllers connected to the CAN communication line and generating CAN communication diagnosis data for each controller when receiving a CAN communication diagnosis request message from at least one in-vehicle controller connected to the CAN communication line; And
A storage unit for storing information on all controllers connected to the CAN communication line and diagnostic data for CAN communication generated by the processor;
Vehicle failure diagnosis device comprising a. The method according to claim 1,
The vehicle failure diagnosis device,
Vehicle failure diagnosis device, characterized in that the vehicle gateway device. The method according to claim 1,
The CAN communication diagnostic data,
The number of times the processor transmits the CAN communication message for each controller that has transmitted the CAN communication diagnosis request message and the controllers connected to the same CAN communication line as the controller that transmits the CAN communication diagnosis request message, and the transmitted CAN communication message Vehicle failure diagnosis apparatus comprising the number of times the response message is received for each controller. The method according to claim 1,
The processor,
At every predetermined time, the CAN communication message is transmitted to all the controllers more than a predetermined number of times, and a response message is received from the at least one or more controllers, and the number of transmission of the CAN communication message and the number of reception of the response message for each of the controller Vehicle failure diagnosis apparatus, characterized in that storing the. The method according to claim 1,
The processor,
Whenever the CAN communication diagnosis request message is received, a CAN communication message is transmitted a predetermined number of times to all controllers connected to the same CAN communication line as the controller that transmitted the CAN communication diagnosis request message, and a response message to the CAN communication message Vehicle failure diagnosis apparatus, characterized in that receiving a. The method of claim 5,
The processor,
Whenever the CAN communication diagnosis request message is received, the CAN communication diagnosis data including the number of times of transmission of the CAN communication message transmitted to the controller and the number of reception of the response message received from the controller are generated for each controller. Vehicle fault diagnosis device. A plurality of CAN communication lines;
At least one controller connected to each of the plurality of CAN communication lines;
When a CAN communication diagnosis request message is received from at least one in-vehicle controller connected to the plurality of CAN communication lines, diagnosis of CAN communication failure of all controllers connected to the CAN communication line to which the controller that transmitted the CAN communication diagnosis request message is connected A vehicle failure diagnosis device for generating and storing CAN communication diagnosis data for each controller;
Vehicle system comprising a. The method of claim 7,
The at least one or more controllers,
A vehicle system comprising: detecting a time-out or bus-off failure in real time, and transmitting the CAN communication diagnosis request message to the vehicle failure diagnosis apparatus when the time-out or bus-off failure is detected. The method of claim 7,
The vehicle failure diagnosis device,
Whenever the CAN communication diagnosis request message is received, a CAN communication message is transmitted a predetermined number of times to all controllers connected to the same CAN communication line as the controller that transmitted the CAN communication diagnosis request message, and a response message to the CAN communication message Vehicle system, characterized in that receiving a. The method of claim 7,
The vehicle failure diagnosis device,
Every predetermined time, the CAN communication message is transmitted to each of the at least one or more controllers more than a predetermined number of times, and a response message to the CAN communication message is received, and the number of transmission of the CAN communication message and the number of reception of the response message are determined for each controller. The vehicle system comprising generating and storing the CAN communication diagnostic data. The method of claim 7,
The vehicle failure diagnosis device,
Whenever the CAN communication diagnosis request message is received, the CAN communication message is transmitted to each of the at least one controller more than a predetermined number of times, and a response message to the CAN communication message is received, and the number of transmission of the CAN communication message for each controller And generating and storing the CAN communication diagnostic data including the number of times the response message is received. Receiving a CAN communication diagnosis request message from at least one in-vehicle controller connected to the CAN communication line;
Diagnosing CAN communication failure of all controllers connected to the same CAN communication line as the controller that transmitted the CAN communication diagnosis request message, and generating CAN communication diagnosis data for each controller; And
Storing CAN communication diagnostic data for each controller
Vehicle failure diagnosis method comprising a. The method of claim 12,
The CAN communication diagnostic data,
The controller that transmitted the CAN communication diagnosis request message, the number of times the CAN communication message was transmitted to controllers connected to the same CAN communication line as the controller that transmitted the CAN communication diagnosis request message for each controller, and a controller for the transmitted CAN communication message Vehicle failure diagnosis method comprising the number of times each response message is received. The method of claim 12,
The step of generating CAN communication diagnostic data for each controller,
Transmitting a CAN communication message more than a predetermined number of times to the at least one in-vehicle controller at each predetermined time;
Receiving a response message from the at least one controller; And
Generating the CAN communication diagnosis data by storing the number of transmissions of the CAN communication message to the at least one controller and the number of receptions of the response message to the CAN communication message for each controller;
Vehicle failure diagnosis method comprising a. The method of claim 12,
The step of generating CAN communication diagnostic data for each controller,
Each time the CAN communication diagnosis request message is received, transmitting the CAN communication message a predetermined number of times to all controllers connected to the same CAN communication line as the controller that transmitted the CAN communication diagnosis request message;
Receiving a response message to the CAN communication message; And
Generating and storing the CAN communication diagnostic data including the number of transmissions of the CAN communication message and the number of receptions of the response message for each of the controllers;
Vehicle failure diagnosis method comprising a.

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