KR101145556B1

KR101145556B1 - examining system of car using wireless communication network and method thereof

Info

Publication number: KR101145556B1
Application number: KR1020040087823A
Authority: KR
Inventors: 배태웅
Original assignee: 엘지전자 주식회사
Priority date: 2004-11-01
Filing date: 2004-11-01
Publication date: 2012-05-15
Also published as: KR20060038700A

Abstract

The automotive diagnostic system using the wireless communication network according to the present invention includes at least one electronic control unit (not shown) for generating a diagnostic code corresponding to the presence or absence of abnormality of each vehicle based on a sensing signal input from various sensors provided in the vehicle ECU); A vehicle terminal for receiving a fault code generated through the electronic control unit (ECU) and transmitting the fault code to the fault diagnosis server; And a failure diagnosis server that receives and analyzes the failure code and transmits information including at least one of a detailed description corresponding to the analyzed failure code and a coping strategy to the vehicle terminal, And displays information corresponding to the failure code using information transmitted through the server.

According to the present invention, since the trouble code is detected regardless of the running or stop of the vehicle, the trouble code is automatically transmitted to the trouble diagnosis server, and the countermeasure for the trouble code can be received in real time on the monitor of the vehicle terminal, It has the advantage of checking the condition of the vehicle in real time and preparing for the accident in advance.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vehicle diagnostic system using a wireless communication network,

1 is a block diagram schematically showing a conventional automotive fault diagnosis system;

2 is a block diagram of a configuration of a car diagnostic system using a wireless communication network according to an embodiment of the present invention;

3 is a flowchart showing an embodiment of a method of diagnosing a vehicle using a wireless communication network according to the present invention.

Description of the Related Art

210: vehicle terminal 212: display unit

214: input unit 216:

218: Interface unit 220: Fault diagnosis server

230: ECU 232: engine ECU

234: ATM ECU 236: ABS ECU

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to an automobile diagnostic system, and more particularly, to a vehicle diagnostic system using a wireless communication network and a method thereof.

2. Description of the Related Art [0002] With the rapid development of electronic control technology in recent years, various devices operated by a mechanical method have been driven by an electric method for convenience of the driver and safety of operation, It is getting better.

Recently, a telematics device is installed in a vehicle to provide a mobile office service using a wireless Internet, an e-mail service, etc. in addition to a vehicle location information service, a vehicle theft and accident detection, a remote vehicle diagnosis, an emergency rescue, have. Telematics is a combination of telecommunication and information science. It means a combination of automobile and computer / telecommunication technology. It is based on mobile communication and internet technology, Security services, productivity improvement services through providing an office environment, finance, reservations, purchase of goods, and other personalized services.

Telematics' representative services include navigation, real-time traffic information, emergency services and various entertainment related fields.

As vehicles become more sophisticated, the types of failures of automobiles are diversified. Fault checking technology and fault diagnosis technology are also improving.

BACKGROUND ART Most automobiles on the market today have an engine ECU (Electronic Control Unit) that receives sensing signals from various sensors and controls the operation of the engine based on the signals, an ATM ECU (Automatic Transmission ECU) that controls the operation of the automatic transmission, And an ABS ECU (Anti-lock Break System ECU) for controlling the operation of the vehicle. Each of the above-described electronic control units (ECUs) has a self-diagnosis function, and receives detection signals from various sensors attached to the diagnosis target device, detects the functional states of the respective devices, And stored in the internal memory, and the diagnostic code stored in the electronic control unit is outputted to the outside by various methods.

FIG. 1 is a block diagram schematically illustrating a conventional automotive fault diagnosis system. The conventional automotive diagnostic apparatus includes a self-diagnosis interface device 10 mounted inside a vehicle, And a tester 20 connected to the connector.

The self-diagnosis interface device 10 continuously diagnoses an abnormality of the diagnosis target device in the electronic control units (ECUs 2, 4, and 8), and if an error occurs, codes data of the failure, The tester 20 is a device installed in a repair shop or a service factory for reading out and decoding the trouble diagnosis code data stored in the self diagnosis interface device 10 to output maintenance instructions, (2, 4, 8) continuously diagnoses and informs the state of the diagnosis target device, thereby making it easy to diagnose and repair the vehicle.

However, according to the conventional automotive fault diagnosis system, the diagnosis code value can be read only when the abnormality of the automobile detected by the self-diagnosis interface device 10 is connected to the tester 20 installed in the service factory, In order to measure a site, a car must be connected to a measuring device provided at a workshop. Therefore, it is not possible to promptly respond to an abnormality of an automobile, and it is not possible to take quick measures against various anomalies that occur during driving.

In addition, a remote diagnosis device has been developed which enables remote diagnosis of a vehicle in operation using a telematics device at a remote car repair shop. However, the driver can not directly know the diagnosis information, There is a problem that the diagnostic information can be known.

In addition, since it is difficult to predict when a problem of a vehicle will occur, it is necessary to go to a repair shop from time to time to receive the maintenance of the vehicle, so that the maintenance cost is high and the driver can not understand the condition of the vehicle in real time. There are disadvantages.

The present invention can be applied to a vehicle equipped with a terminal and an electronic control unit (ECU), which transmits and receives predetermined data on the vehicle condition through serial communication and receives a failure code for a specific device from the ECU, The mobile communication network automatically transmits the information to the malfunction diagnosis server linked with the mobile communication network, and information such as the detailed description and the action to be taken is transmitted to the terminal. Thus, Diagnostic system and method therefor.

In order to achieve the above object, a vehicle diagnostic system using a wireless communication network according to the present invention receives a detection signal from various sensors provided in a vehicle, and generates a diagnostic code corresponding to an abnormality of each vehicle based on the detection signal. A plurality of electronic control units (ECU); A vehicle terminal for automatically transmitting the fault code to a fault diagnosis server when receiving a fault code for a diagnosis target item through the electronic control unit (ECU); And a failure diagnosis server for analyzing the received failure code and transmitting information including a detailed description and a coping strategy to the vehicle terminal.

According to another aspect of the present invention, there is provided a method of diagnosing a vehicle using a wireless communication network, the method comprising: transmitting and receiving predetermined data on a vehicle state through a serial communication between a terminal and an electronic control unit (ECU) When the fault code is received from the ECU, the fault code is automatically transmitted to the fault diagnosis server interlocked with the terminal and the mobile communication network; Wherein the fault diagnosis server transmits information including a detailed description of the specific fault code and a countermeasure to the vehicle terminal through a wireless communication network; And the information transmitted from the fault diagnosis server through the wireless communication network is displayed through a display unit provided in the vehicle terminal.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

2 is a block diagram of a car diagnostic system using a wireless communication network according to an embodiment of the present invention.

However, this is only an embodiment of the present invention, and the automobile diagnostic system according to the present invention is not limited thereto.

Referring to FIG. 2, a self-diagnosis system 200 for a vehicle using a wireless communication network according to an embodiment of the present invention receives sensing signals from various sensors provided in a vehicle, A plurality of electronic control units (ECUs) 230 for generating diagnostic codes corresponding to the diagnostic codes according to the diagnosis codes; A vehicle terminal (210) for automatically transmitting a failure code for a diagnosis target item to the failure diagnosis server through the electronic control unit (ECU); And a failure diagnosis server 220 for analyzing the received failure code and transmitting information including a detailed description and a coping strategy to the vehicle terminal.

Here, the ECU 230 and the vehicle terminal 210 perform serial communication by transmitting and receiving data through a predetermined communication line.

In addition, the vehicle terminal 210 and the failure diagnosis server 220 are interlocked by a predetermined wireless communication network. Preferably, the wireless communication network is a CDMA network.

Telematics is preferably used as the vehicle terminal 210, but the present invention is not limited thereto. However, in describing the embodiment of the present invention, the vehicle terminal will be described as telematics.

That is, the vehicle terminal as a telematics device transmits / receives various data to / from the outside including the fault diagnosis server wirelessly or by wire, and displays information corresponding to the data through characters, symbols, or voice through the display unit 212 And a control unit 216 for displaying information corresponding to the request signal input through the input unit 214 through the display unit 212. [

In the case of the present invention, the vehicle terminal is provided with an interface unit 218 connected to a plurality of electronic control units (ECUs) 230 for generating diagnosis codes corresponding to the abnormality of each vehicle device do.

At this time, the data input to the interface unit 218 are stored as diagnostic code data output from the plurality of ECUs 230 based on the input signals of the sensors installed in the respective devices of the vehicle, This is data that can be verified.

The electronic control unit 230 includes an engine ECU 232 for controlling the operation of the engine by sensing signals input from various sensors, an Automatic Transmission ECU 234 for controlling the operation of the automatic transmission An ABS ECU (Anti-lock Break System ECU) 236 for controlling the operation of the brake, and the like. The diagnostic code data generated from the plurality of electronic control units 232, 234, and 236 is input through the interface unit 218. When the diagnostic code is a failure code for a specific device, And is automatically transmitted to the fault diagnosis server 220 linked to the mobile communication network 210 by the mobile communication network.

To this end, the fault diagnosis server 220 stores information such as a fault code for each constituent device of the vehicle, a detailed description corresponding to the fault code, and a coping procedure, and a specific fault code from the vehicle terminal 210 And transmits information including a detailed explanation and a coping procedure to the vehicle terminal 210 through a wireless communication network (CDMA network).

The information transmitted from the fault diagnosis server 210 through the wireless communication network is displayed through the display unit 212 provided in the vehicle terminal, so that the driver can check the vehicle condition in real time during operation, And coping strategies can be learned in real time.

3 is a flowchart illustrating an embodiment of a method of diagnosing a vehicle using a wireless communication network according to the present invention.

Referring to FIG. 3, a terminal 210 and an electronic control unit (ECU) 230 provided in the vehicle send and receive predetermined data on the vehicle condition through serial communication. (ST 30)

Here, the ECU 230 and the vehicle terminal 210 transmit and receive data through a predetermined communication line, and the predetermined data is transmitted to the ECU 230 from a plurality of ECUs It is data that can check the status of each device as a code data, whether there is an abnormality or not.

In addition, the ECU (Electronic Control Unit) includes an engine ECU 232 for controlling the operation of the engine by sensing signals input from various sensors, an ATM ECU (Automatic Transmission ECU) 234 for controlling the operation of the automatic transmission, An anti-lock break system ECU (ABS ECU) 236 for controlling the operation of the vehicle.

In addition, telematics is preferably used as the vehicle terminal, but the present invention is not limited thereto. However, in describing the embodiment of the present invention, the vehicle terminal will be described as telematics.

That is, the vehicle terminal 210 as a telematics device transmits / receives various data to / from an external device including a fault diagnosis server by wire or wirelessly, and displays information corresponding to the data through a display part 212 using characters, symbols, or voice A control unit 216 for enabling information corresponding to the request signal of the input unit 214 to be displayed through the display unit 212 and an interface unit 218 connected to the plurality of electronic control units The fault code is automatically transmitted to the fault diagnosis server 220 interlocked with the terminal and the mobile communication network when the fault code is received from the diagnostic code data transmitted from the ECU 230. [ (ST 31)

Here, the failure diagnosis server 220 analyzes the received failure code and transmits information including a detailed explanation and a coping manner to the vehicle terminal 210. The failure diagnosis server 220 and the failure diagnosis server 220, The terminal is interworked by a wireless communication network (e.g., CDMA network).

In addition, the fault diagnosis server 220 stores information such as a fault code for each component of the vehicle, a detailed description corresponding to the fault code, and a countermeasure.

When the failure diagnosis server 220 receives the specific failure code from the vehicle terminal 210, the failure diagnosis server transmits information including the detailed description of the specific failure code and the troubleshooting information to the wireless communication network To the vehicle terminal. (ST32)

Accordingly, the information transmitted from the fault diagnosis server through the wireless communication network is displayed through the display unit 212 provided in the vehicle terminal, so that the driver can not only confirm the vehicle condition in real time during operation, It can be learned in real time. (ST 33)

In addition, the information transmitted from the malfunction diagnosis server 220 may include an SMS for telephone connection to an agent. When the driver selects the telephone connection by the SMS, I can explain the countermeasures.

In addition, even in the case of a beginner, it is possible to easily grasp the state of the vehicle through the monitor, and it is possible to grasp the state of the vehicle in real time, thereby eliminating the burden of having to go to the repair shop from time to time.

Claims

At least one electronic control unit (ECU) for generating a diagnostic code corresponding to the presence or absence of abnormality in each vehicle based on a detection signal input from various sensors provided in the vehicle;

A vehicle terminal for receiving a fault code generated through the electronic control unit (ECU) and transmitting the fault code to the fault diagnosis server; And

And a failure diagnosis server that receives and analyzes the failure code and transmits information including at least one of a detailed description corresponding to the analyzed failure code and a response to the failure code to the vehicle terminal,

Wherein the vehicle terminal displays information corresponding to the failure code using information transmitted through the failure diagnosis server.

The method according to claim 1,

Wherein the ECU and the vehicle terminal perform serial communication through a predetermined communication line.

The method according to claim 1,

Wherein the vehicle terminal and the trouble diagnosis server are linked by a predetermined wireless communication network.

The method of claim 3,

Wherein the predetermined wireless communication network is a CDMA network.

The method according to claim 1,

Wherein the telematics is used as the vehicle terminal.

The method according to claim 1,

The vehicle terminal,

A display unit for transmitting and receiving various data by wired or wireless communication with the outside including the fault diagnosis server and displaying information corresponding to the data by a character, a symbol or voice;

An input unit for receiving a predetermined request signal by a driver;

A controller for allowing information corresponding to the input of the request signal to be displayed through the display unit;

And an interface unit connected to the at least one electronic control unit.

The method according to claim 1,

The electronic control unit (ECU) includes an engine ECU that controls an operation of the engine by a sensing signal input from various sensors; An ATM ECU for controlling the operation of the automatic transmission; And an ABS ECU for controlling the operation of the brake.

The method according to claim 1,

Wherein the fault diagnosis server stores at least one of a fault code for each constituent device of the vehicle, a detailed description corresponding to the fault code, and a countermeasure.

Transmitting and receiving predetermined data on a vehicle state through a serial communication between a terminal and an electronic control unit (ECU) provided in the vehicle;

Transmitting the fault code from the terminal to the fault diagnosis server when the fault code is included in the data received from the ECU;

A step in which information including at least one of a detailed description corresponding to the failure code and a coping manner is transmitted from the failure diagnosis server to the vehicle terminal;

And displaying information transmitted from the fault diagnosis server through a display unit provided in the vehicle terminal.

10. The method of claim 9,

Wherein the vehicle terminal and the fault diagnosis server are linked by a predetermined wireless communication network.

12. The method of claim 11,

Wherein the predetermined wireless communication network is a CDMA network.

10. The method of claim 9,

Wherein the fault diagnosis server stores information such as a fault code for each component of the vehicle, a detailed description corresponding to the fault code, and a coping strategy.

10. The method of claim 9,

Wherein the information transmitted from the fault diagnosis server includes an SMS for connection to an agent telephone.

15. The method of claim 14,

Further comprising the step of automatically connecting with an agent by selecting a telephone connection by the SMS to transmit a detailed countermeasure description description for a specific failure code.