KR20200141240A - System and method for providing vehicle diagnosis information using vehicle gateway device - Google Patents

Abstract

Disclosed are a system for providing vehicle diagnosis information using a vehicle gateway, and a method thereof. According to the present invention, the system for providing vehicle diagnosis information comprises: a plurality of electronic control units (ECUs) mounted on a vehicle to be diagnosed; a vehicle gateway device which collects status information on each part of the vehicle to be diagnosed through the ECU; and a vehicle failure diagnosis server configured to periodically receive the status information from the vehicle gateway device, analyze the received status information to determine whether the vehicle to be diagnosed has a breakdown, generate warning information for the vehicle to be diagnosed based on the determination result, and transmit the warning information to the vehicle gateway device. The vehicle gateway device can control the ECU to generate a failure code corresponding to failure data by changing the status information of the part corresponding to received warning information to the failure data indicating the cause of the failure when the warning information is received from the vehicle diagnosis server, and broadcasting the failure data to a CAN bus.

Description

System and method for providing vehicle diagnosis information using vehicle gateway device}

The present invention relates to a system for diagnosing a vehicle failure using a vehicle gateway device and a remote vehicle diagnosis server, and a diagnosis method thereof.

In general, a vehicle diagnosis method employs a technology in which a gateway device installed in a vehicle scans and returns a failure diagnosis result of each electric part when there is a request from the outside. The gateway is connected to a number of electronic control units (Electronic Control Units, hereinafter referred to as ECUs) and CAN (Controller Area Network) communication, and notifies them when a failure occurs by scanning a failure code generated by the ECU.

However, since these fault codes are codes that are generated after a problem occurs in the vehicle, the method of simply diagnosing the vehicle using the fault code is to predict that a problem will occur in the vehicle in advance and take appropriate action. There is a limit to performing it.

In addition, conventionally, when a failure occurs in each part of a vehicle, the ECU detects it and generates a failure code, which is displayed on the screen through a cluster or the like. According to this prior art, even if the gateway device receives warning information predicting a failure from a remote server, it can only display information indicating a failure in relation to the part, and the correct failure code is not displayed even if it is bitten by the equipment of the workshop Therefore, it is difficult to provide a quick and accurate maintenance service in a workshop.

The present invention is to solve the problems of the prior art as described above, in which a gateway device of a vehicle collects sensing values indicating status information of each component from various components mounted on the vehicle, and sends this to a remote diagnostic server. It is to provide a vehicle failure diagnosis service that enables vehicle failure to be predicted and diagnosed based on big data.

In addition, in the present invention, when a remote diagnostic server sends warning information for predicting a failure, it is possible to perform efficient maintenance work by controlling to generate an accurate failure code corresponding to the failure data for a corresponding part even if no failure data has been generated. It aims to do.

In order to achieve the above object, a vehicle diagnosis information providing system using a vehicle gateway according to an embodiment of the present invention includes: a plurality of Electronic Control Units (ECUs) mounted on a vehicle to be diagnosed; A vehicle gateway device collecting status information on each part of the vehicle to be diagnosed through the ECU; And periodically receiving the collected status information from the vehicle gateway device, analyzing the received status information to determine whether the diagnosis target vehicle has a failure, and generating warning information for the diagnosis target vehicle based on the determination result. And a vehicle diagnostic server that transmits the warning information to the vehicle gateway device, wherein, when the vehicle gateway device receives the warning information from the vehicle diagnostic server, the status information of the part corresponding to the received warning information is a cause of a failure. It is possible to control the ECU to generate a fault code corresponding to the fault data by changing the fault data to represent fault data and broadcasting the changed fault data to a controller area network (CAN) bus.

When a diagnosis is requested from an external device, the vehicle gateway device may transmit a fault code generated by the ECU to the external device in response thereto.

When the vehicle gateway device outputs diagnostic information to the cluster of the vehicle to be diagnosed, the fault code generated by broadcasting by changing it to fault data indicating the cause of the fault is not an actual fault, but predicted fault information. Can be displayed.

In the method for providing vehicle diagnosis information using a vehicle gateway according to an embodiment of the present invention, a vehicle gateway device mounted in a vehicle to be diagnosed includes a state of each part of the vehicle to be diagnosed through a plurality of electronic control units (ECUs). Collecting information and transmitting it to a vehicle diagnosis server; Receiving warning information generated based on the collected status information from the vehicle diagnosis server; Changing state information of a part corresponding to the received warning information to failure data indicating a cause of a failure; And controlling the ECU to generate a fault code corresponding to the fault data by broadcasting the changed fault data to a controller area network (CAN) bus.

According to the present invention, the gateway device of the vehicle collects sensing values indicating status information of each component from various components mounted on the vehicle, and sends it to a remote diagnostic server to predict vehicle failure based on big data. And make a diagnosis.

In addition, according to the present invention, instead of determining whether the gateway device mounted in the vehicle has a failure, the server stage determines and predicts the failure, and also for parts for which the failure determination criterion or the usable range is not set for each vehicle part. It is possible to determine whether or not the vehicle to be diagnosed is normal using information collected from vehicles that are running normally.

In addition, according to the present invention, by predicting the possibility of a vehicle failure before the vehicle failure occurs based on the sensing values collected from each part of the vehicle, the vehicle owner can predict problems that may occur in the vehicle at low cost. You can support to block.

In addition, in the present invention, when a remote diagnostic server sends warning information for predicting a failure, efficient maintenance work can be performed by controlling to generate an accurate failure code corresponding to the failure data for a corresponding part even if failure data has not occurred. .

1 is a diagram illustrating a network configuration of a system for providing vehicle diagnosis information according to an embodiment of the present invention.
2 is a functional block diagram illustrating a configuration of a vehicle gateway device according to an embodiment of the present invention.
3 is a flowchart illustrating a method of providing vehicle diagnosis information according to an embodiment of the present invention.

The terms used in the present specification will be briefly described, and the present invention will be described in detail.

The terms used in the present invention have been selected from general terms that are currently widely used while considering functions in the present invention, but this may vary depending on the intention or precedent of a technician working in the field, the emergence of new technologies, and the like. In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning of the terms will be described in detail in the description of the corresponding invention. Therefore, the terms used in the present invention should be defined based on the meaning of the term and the overall contents of the present invention, not a simple name of the term.

When a part of the specification is said to "include" a certain component, it means that other components may be further included rather than excluding other components unless otherwise stated. In addition, terms such as "... means", "... unit", and "module" described in the specification mean a unit that processes at least one function or operation, which is implemented in hardware or software, or It can be implemented by a combination of.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are assigned to similar parts throughout the specification.

In the present invention, the vehicle may include all types of moving means. For example, it should be understood as a concept including all kinds of devices that can be operated by a user, such as a car, a motorcycle, an airplane, a drone, or a ship, or can be controlled by a remote control. In addition, the concept may include both an internal combustion engine vehicle including an engine as a power source, a hybrid vehicle including an engine and an electric motor as a power source, and an electric vehicle including an electric motor as a power source. Hereinafter, the vehicle will be mainly described.

Hereinafter, a vehicle failure diagnosis system and method according to various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a network configuration of a system for providing vehicle diagnosis information according to an embodiment of the present invention.

Referring to FIG. 1, the vehicle diagnosis information providing system is mounted on a plurality of Electronic Control Units (ECUs) 12 and a vehicle to be diagnosed 11 mounted on a vehicle to be diagnosed 11, and the vehicle to be diagnosed through the ECU 12 The vehicle gateway device 10 that collects status information for each part of (11), and the vehicle gateway device 10 periodically receives the status information collected from the vehicle gateway device 10, and analyzes the received status information to determine the diagnosis target vehicle 11 ) May be configured to include a vehicle diagnosis server 20 that determines whether or not a failure or failure is expected, and generates and provides warning information for the diagnosis target vehicle 11 based on the determination result. In addition, the vehicle gateway device 10 may communicate with an external device 30 requesting a failure code, such as equipment of a repair shop, and provide the requested information.

The ECU 12 includes in-vehicle EMS (Engine Management System), TCU (Telecommunication Control Unit), HCU (Hybrid Control Unit), BMS (Battery Management System), ECS (Electronic Power Steering), MDPS (Motor Driving Power Steering), A device that is installed in the Lane Keeping Assist System (LKAS), Smart Cruise Control (SCC), etc. to control its functions, and is connected to the gateway 10 through CAN communication.

Each ECU 12 initiates communication when power is applied by starting the vehicle, and transmits a message to the main bus through CAN communication, which is a broadcasting method. In addition, each ECU 12 sends and receives various data necessary for cooperative control, and stores various failure codes generated due to system defects and communication problems. In addition, each ECU 12 performs a predetermined self-diagnosis during vehicle diagnosis or driving, and when a failure occurs, generates a corresponding failure code and transmits it to the gateway device 10, while lighting various lamps of the vehicle cluster to the driver. You can report abnormal conditions.

The vehicle gateway device 10 is a device that serves as a gateway between the vehicle interior and the exterior, and in response to a service request from the vehicle diagnosis server 20 or the external device 30, the vehicle status information received from ECUs and sensors and It wirelessly transmits vehicle specific information. The gateway device 10 may periodically collect status information from each ECU 12, and as a result, may obtain a sensing value of each part of the vehicle.

The vehicle diagnosis server 20 analyzes the information collected from the gateway device 10 of the vehicle 11 to be diagnosed by various methods described below to determine whether each electric part of the vehicle is operating normally, whether it is a failure, or predicts a failure. It is possible to generate warning information indicating whether or not, what parts need to be replaced, and the like, and feed back the generated warning information to the gateway device 10 of the vehicle 11.

The vehicle diagnosis server 20 presets a range in which each part of the vehicle to be diagnosed 11 and the vehicle of the same kind function normally, and compares the state information of each part received from the vehicle to be diagnosed 11 It can be determined whether there is a failure.

The vehicle diagnosis server 20 uses data collected from a plurality of vehicles of the same type as the vehicle 11 to be diagnosed and is normally operated, and has a measurement value within a normal range of whether each part of the vehicle 11 to be diagnosed is a failure. You can determine if there is.

The vehicle diagnosis server 20 includes an artificial intelligence module learned based on big data including status information collected from many vehicles and diagnosis results based thereon, and uses the artificial intelligence module to determine the vehicle 11 to be diagnosed. It can generate failure prediction information for.

As described above, according to the present invention, instead of determining whether the gateway device 10 mounted in each vehicle has a failure, the server 20 determines and predicts the failure, and the failure determination criterion or usable range for each vehicle part, etc. Even for the parts that are not set, it is possible to determine whether or not the vehicle to be diagnosed is normal using information collected from vehicles running normally.

The gateway device 10 may display diagnostic information received from the vehicle diagnosis server 20 through an output unit such as a cluster screen of a vehicle and provide it to a user.

Upon receiving the warning information from the vehicle diagnosis server 20, the gateway device 10 changes the status information of the part corresponding to the received warning information to failure data indicating the cause of the failure, and broadcasts the changed failure data to the CAN bus. By casting, the ECU 12 is controlled to generate a fault code corresponding to the fault data.

In other words, if the gateway device 10 receives a failure warning from the remote vehicle diagnosis server 20 and manipulates the information generated from the corresponding part and broadcasts it to the CAN bus, the ECU 12 checks the broadcasted information. It recognizes that the part has failed and generates a corresponding fault code.

For example, when warning information is received from the vehicle diagnosis server 20 indicating that engine repair is expected to be needed soon due to a cylinder compression error, the gateway device 10 transmits the data generated from the corresponding cylinder to the information corresponding to the cause of the occurrence of the engine malfunction ( Example: Cylinder #1 misfire) and broadcast to CAN bus. The ECU 12 reads this and generates a corresponding fault code.

Meanwhile, when diagnostic information is requested from the external device 30 connected to the gateway device 10, the gateway device 10 transmits the fault code generated by the ECU 12 in response to the request to the external device 30. To pass. Because the fault code is recorded, the fault code can be checked by accessing it through the equipment at the workshop. As a result, it is possible to obtain a corresponding fault code and repair it in advance before the vehicle actually fails.

When the gateway device 10 outputs diagnostic information to the cluster of the vehicle 11 to be diagnosed, the fault code generated by the fault data operated by the gateway device 10 indicates that it is not the actual fault, but the fault predicted information. Make it possible to distinguish between situations and predicted failure situations.

In other words, since the fault code is displayed before the corresponding part actually fails, even if the fault code is generated by the ECU 12, it is a'failure prediction' when the gateway device 10 displays the fault code on the screen, etc. It is to mark it differently to reveal it.

In the above example, the ECU 12 actually recognizes that the cylinder is misfired, but the gateway device 10 has previously broadcasted to the CAN bus, so it can be seen that it is not a real failure. Therefore, even if the ECU 12 generates the same fault code, the gateway device 10 receives warning information from the vehicle diagnosis server 20, and in the case of the fault code generated by the operation, displays'failure prediction' and normally occurs. In the case of a fault code that has been damaged, it is displayed the same as before because the code was opened due to an actual fault.

2 is a functional block diagram illustrating the configuration of a vehicle gateway device according to an embodiment of the present invention.

The gateway device 10 is a device mounted in the vehicle 11 to perform message conversion and information exchange between networks in order to communicate with a network inside the vehicle 11 and an external vehicle diagnosis server 20 or device 30 to be.

2, the gateway device 10 includes a first communication unit 25 for exchanging information with the ECU 12, a second communication unit 26 for exchanging information with devices outside the vehicle, and a first communication unit ( 25) through the vehicle status information collection unit 21 that receives and stores the vehicle status information, and sends the collected vehicle status information and vehicle information to the vehicle diagnosis server 20 and receives warning information in response thereto, The failure code operation unit 22, which controls the ECU 12 to generate a failure code by changing the status information generated from the warning part into failure data and broadcasting it through the first communication unit 25, is requested by the external device 30 In this case, it may include a fault code transmission unit 23 for transmitting a fault code and a diagnostic information output unit 24 for outputting diagnostic information through an output means such as a cluster.

3 is a flowchart illustrating a method of providing vehicle failure diagnosis information according to an embodiment of the present invention.

In step S31, the vehicle gateway device 10 collects status information on each part of the vehicle 11 to be diagnosed through a plurality of ECUs 12 and transmits the collected state information to the vehicle diagnosis server 20.

The vehicle diagnosis server 20 may periodically receive status information for each vehicle part from the gateway device 10 of the vehicle 11 to be diagnosed, and the status information includes not only the sensing value of each part but also the identification information of the vehicle. , Vehicle type, mileage, and other metadata about the vehicle may also be included.

The vehicle diagnosis server 20 analyzes the received status information to determine whether the diagnosis target vehicle 11 has a failure, and generates warning information for the vehicle to be diagnosed based on the determination result, and then transmits the warning information to the gateway device 10. do.

When the gateway device 10 receives the warning information from the vehicle diagnosis server 20 in step S32, in step S33, the state information of the part corresponding to the received warning information is changed to failure data indicating the cause of the failure. That is, even if the warning information generated by the vehicle diagnosis server 20 includes data predicting a failure of a predetermined part, the gateway device 10 manipulates the information as if the corresponding part has failed.

In step S34, the ECU 12 is controlled to generate a fault code corresponding to the fault data by broadcasting the changed fault data to the CAN bus.

The method according to an embodiment of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like alone or in combination. The program instructions recorded in the medium may be specially designed and configured for the present invention, or may be known and usable to those skilled in computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. -A hardware device specially configured to store and execute program instructions such as magneto-optical media, and ROM, RAM, flash memory, and the like. Examples of the program instructions include not only machine language codes such as those produced by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

10: vehicle gateway device
11: vehicle
12: Electronic Control Unit (ECU)
20: vehicle diagnostic server
30: external device

Claims (4)

A plurality of electronic control units (ECUs) mounted on the vehicle to be diagnosed;
A vehicle gateway device collecting status information on each part of the vehicle to be diagnosed through the ECU; And
Periodically receiving the collected status information from the vehicle gateway device, analyzing the received status information to determine whether the diagnosis target vehicle has failed, and generating warning information for the diagnosis target vehicle based on the determination result Includes; a vehicle diagnosis server for transmitting to the vehicle gateway device,
The vehicle gateway device,
Upon receiving the warning information from the vehicle diagnosis server, the status information of the part corresponding to the received warning information is changed to failure data indicating the cause of the failure, and the changed failure data is broadcast to a CAN (Controller Area Network) bus. A system for providing vehicle diagnosis information using a vehicle gateway, characterized in that controlling the ECU to generate a failure code corresponding to the failure data by casting. The method of claim 1,
The vehicle gateway device,
When a diagnosis is requested from an external device, a fault code generated by the ECU is transmitted to the external device in response thereto. A system for providing vehicle diagnosis information using a vehicle gateway. The method of claim 1,
The vehicle gateway device,
When the diagnostic information is output to the cluster of the vehicle to be diagnosed, the fault code generated by broadcasting by changing the fault data indicating the cause of the fault to indicate that the fault code is not the actual fault, but the fault predicted information. , Vehicle diagnosis information providing system using a vehicle gateway. The vehicle gateway device mounted on the vehicle to be diagnosed,
Collecting status information on each part of the vehicle to be diagnosed through a plurality of Electronic Control Units (ECUs) and transmitting it to a vehicle diagnosis server;
Receiving warning information generated based on the collected status information from the vehicle diagnosis server;
Changing state information of a part corresponding to the received warning information to failure data indicating a cause of a failure; And
Controlling the ECU to generate a fault code corresponding to the fault data by broadcasting the changed fault data to a controller area network (CAN) bus; comprising, providing vehicle diagnostic information using a vehicle gateway Way.

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