KR20060037696A - Automotive self-diagnosis system using telematics device and method - Google Patents

Abstract

Automotive self-diagnosis system using a telematics device according to the present invention, the plurality of electronic control unit (ECU) for receiving a detection signal from a variety of sensors based on this to generate a diagnostic code corresponding to the abnormality of each vehicle device and; A self-diagnostic interface device for storing data on the presence or absence of a diagnosis target item received through the electronic control unit (ECU); And a telematics device connected to the self-diagnosis interface device through a predetermined communication line and displaying diagnostic information according to the received data in real time to the driver.

According to the present invention, the driver can check the state of the vehicle in real time while driving the vehicle, there is an advantage that it is easy to prepare for the accident.

In addition, even a beginner driving can easily determine the state of the vehicle through the monitor, it is possible to grasp the state of the vehicle in real time has the advantage of eliminating the burden of having to go to the repair shop for maintenance from time to time.

Description

Auto checking system of car using telematics device and method thereof

1 is a block diagram schematically showing a conventional troubleshooting system for a vehicle.

Figure 2 is a block diagram of a vehicle self-diagnosis system using a telematics device according to an embodiment of the present invention.

Figure 3 is a block diagram of a vehicle self-diagnosis system using a telematics device according to another embodiment of the present invention.

4A to 4C are views illustrating a process of selecting a predetermined item through an input unit of telematics.

FIG. 5 illustrates an embodiment of the display screen shown in FIG. 4C. FIG.

Figure 6 is a flow chart showing an embodiment of a vehicle self-diagnosis method using a telematics device according to the present invention.

<Explanation of symbols for the main parts of the drawings>

210, 310: telematics device 212, 312: display unit

214, 314: input unit 216, 316: control unit

218: second interface unit 222: first interface unit

220, 320: self-diagnostic interface device 224, 324: input terminal                 

230, 330: ECU 232, 332: Engine ECU

234, 334: ATM ECU 236, 336: ABS ECU

The present invention relates to an automobile self-diagnosis system, and more particularly, to a vehicle self-diagnosis system using a telematics device and a method thereof.

Recently, with the rapid development of electronic control technology, various devices that were operated by mechanical methods in automobiles are being driven by electrical methods due to driver's convenience and driving safety, and the system of automobiles is gradually advanced and cutting-edge. It is getting angry.

In addition, in recent years, the vehicle is equipped with a telematics device to provide vehicle location information service, vehicle theft and accident detection, remote vehicle diagnosis, emergency rescue, traffic information service, mobile office using wireless Internet, and e-mail service. have.

Telematics is a combination of telecommunication and information science, which means the combination of car and computer / telecommunications technology. It means providing productivity improvement service through providing safety service and office environment and providing finance, reservation, product purchase, and other personalized service.                         

Typical services of Telematics include navigation, real-time traffic information, emergency rescue, and various entertainment-related fields.

As the automobile is gradually advanced, the failure forms of the automobiles are also diversified, and the failure checking technique and the diagnosis technique for this are being improved day by day.

Most vehicles currently on the market receive sensing signals from various sensors based on the engine ECU (Electronic Control Unit) to control the operation of the engine, ATM ECU (Automatic Transmission ECU) to control the operation of the automatic transmission, brake Many electronic control units (ECUs), such as the Anti-lock Break System ECU (ABS ECU), control the operation of the system. Each of the plurality of electronic control units (ECU) as described above has a self-diagnostic function, receives a detection signal from various sensors attached to the diagnosis target device, detects a functional state of each device, and then outputs a corresponding diagnostic code. It is stored in the internal memory, and the diagnostic code stored in the electronic control unit is output to the outside by various methods.

FIG. 1 is a block diagram schematically showing a conventional vehicle diagnosis system, and a conventional vehicle diagnosis apparatus includes a self-diagnosis interface device 10 mounted inside a vehicle, and the self-diagnosis interface device 10 from the outside of the vehicle. It is generally distinguished by a tester 20 connected to the connector.

The self-diagnosis interface device 10 continuously diagnoses whether there is an error of a diagnosis target device in an electronic control unit (ECU: 2, 4, 8), and when an error occurs, codes the data for the failure and has a memory provided therein. Is a device to store in.                         

In addition, the tester 20 is a device installed in a repair shop or a service shop that outputs maintenance instructions by reading and decoding the fault diagnosis code data stored in the self-diagnosis interface device 10. It is a device to facilitate the diagnosis and repair of the car by continuously and automatically diagnose the status of the device to be diagnosed by). However, according to the conventional vehicle failure diagnosis system, it is possible to read the diagnostic code value only by connecting to the tester 20 installed in the service factory whether there is an abnormality of the vehicle detected by the self-diagnosis interface device 10, so that the vehicle malfunctions. In order to measure the area, the vehicle must be connected to the measuring device provided in the repair shop, so it is not possible to quickly respond to the abnormalities of the car, there was a problem that can not take prompt measures for various abnormalities occurring during driving.

In addition, a remote diagnosis device has been developed that allows remote diagnosis of a vehicle in operation using a telematics device at a car repair shop. However, the driver cannot know the diagnosis information directly, but only through a car repair shop. There was a problem that the diagnostic information can be known.

In addition, it is difficult to predict when a problem occurs in the vehicle, so it is necessary to go to the repair shop at any time, so that the maintenance cost is high, and the condition of the vehicle cannot be understood in real time. There are disadvantages.

According to the present invention, a telematics device and an electronic control unit (ECU) installed inside a vehicle transmit and receive predetermined data through serial communication, so that the data received through the electronic control unit is displayed on the screen of the telematics in real time. It is an object of the present invention to provide a vehicle self-diagnosis system and method using a telematics device that allows a driver to check the state of a vehicle in real time.

In addition, by setting the driver to be able to check the previously selected items to enable the driver to check the desired vehicle status information in real time, the car using a telematics device that can diagnose the specific state of the vehicle itself regardless of time and place It is an object of the present invention to provide a self-diagnosis system and method thereof.

In order to achieve the above object, the vehicle self-diagnosis system using the telematics device according to the present invention receives a detection signal from various sensors and generates a diagnostic code corresponding to the abnormality of each device based on the detection signal. An electronic control unit (ECU); A self-diagnostic interface device for storing data on the presence or absence of a diagnosis target item received through the electronic control unit (ECU); And a telematics device connected to the self-diagnosis interface device through a predetermined communication line and displaying diagnostic information according to the received data in real time to the driver.

Also. The self-diagnostic interface device includes: a first interface unit configured to perform an interface function by transmitting and receiving data to and from the telematics device through a predetermined communication line; An input terminal connected to the electronic control unit to receive predetermined data is included, and the first interface unit and the telematics device perform serial communication through the predetermined communication line.

In addition, the electronic control unit (ECU) includes an engine ECU for controlling the operation of the engine by detection signals input from various sensors; An ATM ECU for controlling the operation of the automatic transmission; An ABS ECU that controls the operation of the brakes is included.

The telematics apparatus may further include: a display unit configured to transmit and receive various data to and from the outside by wire or wirelessly, and display information corresponding to the data by text, symbols, or voice; An input unit configured to receive a predetermined request signal from the driver; And a control unit configured to display information corresponding to the input of the request signal through the display unit, and the telematics device performs an interface function to enable data transmission and reception with a first interface unit of the self-diagnostic interface device. The second interface unit is characterized in that it is further included.

However, the self-diagnostic interface device may be configured inside the telematics device, in which case the first and second interface parts are not provided.

In addition, when a specific item selection signal for a vehicle state is input through the input unit of the telematics device and the specific item selection signal is input, the reference value and the current numerical value for the selected item are displayed in real time on the display unit. In addition, the detailed description and the coping method according to the current numerical value of the selected item may be further displayed through the display unit.

In addition, the vehicle self-diagnosis method using a telematics device according to the present invention comprises the steps of inputting a request signal relating to the diagnostic information of the vehicle; Requesting transmission of vehicle diagnostic information data by the request signal; Receiving and displaying the diagnostic information data.

Here, the step of inputting a request signal relating to the diagnostic information of the vehicle may include: selecting one of a plurality of groups displayed on the self-diagnosis menu of the telematics display unit by the driver through the telematics input unit; The detailed menu is displayed by the selection, and the driver selects a specific item among the detailed items through an input unit of the telematics.

In addition, the finally displayed diagnostic information data is a default value and a current numerical value for the item selected by the driver, and detailed description and coping instructions according to the current numerical value may be further displayed on the display unit. .

In addition, the plurality of groups may be a group representing an item of a vehicle state in charge of each electronic control unit (ECU), that is, an engine ECU, an ATM ECU, and an ABS ECU.

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

2 is a block diagram of a vehicle self-diagnosis system using a telematics device according to an embodiment of the present invention.

However, this is only one embodiment of the present invention, the automobile self-diagnosis system according to the present invention is not limited thereto.

Referring to FIG. 2, the self-diagnosis system 200 for a vehicle using a telematics device according to an embodiment of the present invention codes and stores data about an abnormality of a diagnosis target device received through an ECU 230. The self-diagnostic interface device 220 and the self-diagnostic interface device 230 are connected to each other via a predetermined communication line and include a telematics device 210 for displaying diagnostic information according to the received data to the driver.

The self-diagnostic interface device 220 includes a first interface unit 222 that performs an interface function by transmitting and receiving data with the telematics device 210 through a predetermined communication line, and the first interface unit 222. And the telematics device 210 performs serial communication through the predetermined communication line.

In addition, the input terminal 224 of the self-diagnosis interface device receives a detection signal from various sensors based on this, a plurality of electronic control unit (ECU: 230) for generating a diagnostic code corresponding to the abnormality of each vehicle device Connected with

At this time, the ECU (Electronic Control Unit) 230 is an engine ECU (232) for controlling the operation of the engine by the detection signal input from the various sensors, ATM ECU (Automatic Transmission ECU) for controlling the operation of the automatic transmission ( 234, an anti-lock break system ECU (ABS ECU) 236 that controls the operation of the brake, and the like.

That is, the diagnostic code data generated from the plurality of electronic control units 232, 234, and 236 is stored in the self-diagnostic interface device 220, and is transmitted to the outside of the telematics device 210 through the first interface unit 222. Is the output.

In addition, the telematics device 210 transmits / receives various data to or from the outside by wire or wirelessly, and displays information corresponding to the data through a display unit 212 as a text, a symbol, or a voice. When the request signal is input, the controller 216 is provided to display the corresponding information through the display unit 212.

In the present invention, the telematics device 210 is configured to include a second interface unit 218 for performing an interface function to enable data transmission and reception with the first interface unit 222 of the self-diagnostic interface unit 220. .

That is, the second communication interface unit 218 of the telematics device 210 and the first interface unit 222 of the self-diagnostic interface unit 220 are connected by a communication line to transmit and receive data between them. The data transmitted and received between them is diagnostic code data outputted from a plurality of ECUs 230 based on input signals of sensors installed in respective devices of the vehicle, and data for checking the solid state and abnormality of each device. 3 is a block diagram of a vehicle self-diagnosis system using a telematics device according to another embodiment of the present invention.

This is a difference in that the self-diagnostic interface device is configured inside the telematics device as compared with FIG. 2, and the description of the same elements as in FIG. 2 will be omitted.

3, the self-diagnostic interface device 320 is provided inside the telematics device 310, so that the first and second interface parts 218 and 222 which are components of the embodiment shown in FIG. 2 are provided. Is not provided, through which the data output from the ECU 230 is input to the telematics device 310 more accurately and quickly and is displayed to the driver.

In the case of the present invention, the driver may select a specific item for the vehicle state by using the input unit 314 of the telematics device, and may check the state in real time with respect to the selected specific item.

According to the present invention, the driver can diagnose the state of the specific item of the vehicle by itself regardless of time and place.

4A to 4C are diagrams illustrating a process of selecting a predetermined item through an input unit of telematics.

First, when the driver selects the self-diagnosis menu through the input unit of the telematics, the screen shown in FIG. 4A is displayed on the display unit.

For example, as shown in FIG. 4A, a plurality of groups are displayed on the screen. In the plurality of groups, items of a vehicle state which are in charge of each ECU, that is, an engine ECU, an ATM ECU, an ABS ECU, and the like are divided for each ECU. Can be displayed.

At this time, when the driver selects an item of a vehicle state that the engine ECU is in charge of, for example, a screen in which detailed items are displayed as shown in FIG. 4B is displayed, and when the driver selects a specific item for each detailed item. Only the selected item is finally displayed as shown in FIG. 4C.

FIG. 5 is a diagram illustrating an embodiment of the display screen illustrated in FIG. 4C, which is a screen displayed when a driver selects a specific item from a vehicle status item that is in charge of an engine ECU, and as illustrated in FIG. 5. The default value and current numerical value for the item are displayed.

The user can check in real time the current state of the vehicle for the item selected by the user through the displayed screen.

Hereinafter, referring to FIG. 6, a process in which abnormality information of each device is displayed on the display unit of the telematics device by the diagnostic code data transmitted through the ECU will be described in more detail.

6 is a flowchart illustrating an embodiment of a vehicle self-diagnosis method using a telematics device according to the present invention.

First, as described above with reference to FIGS. 4A to 4C, when a request signal for diagnosis information of a vehicle is input through the input unit of the telematics device (ST 10), the controller uses a self-diagnostic interface device using previously stored communication protocol information. After checking the communication protocol, the diagnostic code data is requested from the self-diagnosis interface device. (ST 20)

Subsequently, the control unit receives the diagnostic code data from the self-diagnostic interface device through the first or second interface unit 92 and scans it. (ST 30)

In addition, the controller scans the received diagnostic code data and compares and analyzes the failure status and abnormality of each device (ST 40), and the diagnostic information may be displayed as text or sound through the display unit. (ST 50)

In this case, the diagnostic code data is a code that can be output when the failure state is to be detected in the vehicle maintenance station, which is output from the ECU and stored in the self-diagnostic interface device, and the information displayed through the display of the telematics device is shown in FIG. 5. As shown in FIG. 2, the driver easily grasps the vehicle state of the previously selected item, and a default value and a current numerical value for various items are displayed.

The driver can determine the current state of the vehicle through the displayed value.

Alternatively, in addition to the reference value and the current numerical value for the various items displayed, a detailed description and countermeasures may be displayed. For this purpose, the diagnostic code and the detailed description of each code and the corresponding code may be displayed on the controller of the telematics device. It is desirable to store information such as tips in advance.

Therefore, the driver can check in real time whether there is an abnormal state for each device by requesting the vehicle diagnostic information through the input unit 98 of the telematics device 90.

According to the present invention, the driver can check the state of the vehicle in real time while driving the vehicle, there is an advantage that it is easy to prepare for the accident.

In addition, even a beginner driving can easily determine the state of the vehicle through the monitor, it is possible to grasp the state of the vehicle in real time has the advantage of eliminating the burden of having to go to the repair shop for maintenance from time to time.

Claims (15)

A plurality of electronic control units (ECUs) for receiving detection signals from various sensors and generating diagnostic codes corresponding to the abnormality of each device based on the detected signals; A self-diagnostic interface device for storing data on the presence or absence of a diagnosis target item received through the electronic control unit (ECU); And a telematics device connected to the self-diagnostic interface device via a predetermined communication line and displaying diagnostic information according to the received data in real time to a driver. The method of claim 1, The self-diagnostic interface device includes: a first interface unit configured to perform an interface function by transmitting and receiving data to and from the telematics device through a predetermined communication line; And an input terminal connected to the electronic control unit to receive predetermined data, wherein the vehicle self-diagnosis system uses a telematics device. The method of claim 2, And the first interface unit and the telematics device perform serial communication through the predetermined communication line. The method of claim 1, The electronic control unit (ECU) includes an engine ECU for controlling the operation of the engine by sensing signals input from various sensors; An ATM ECU for controlling the operation of the automatic transmission; Automotive self-diagnosis system using a telematics device, characterized in that the ABS ECU to control the operation of the brake. The method of claim 1, The telematics device, A display unit which transmits / receives various data to or from the outside and displays information corresponding to the data by text, symbol, or voice; An input unit configured to receive a predetermined request signal from the driver; And a control unit configured to display information corresponding to the input of the request signal through the display unit. The method of claim 5, The telematics device further comprises a second interface unit for performing an interface function to enable data transmission and reception with the first interface unit of the self-diagnostic interface device. The method of claim 1, And the self-diagnostic interface device is configured inside the telematics device. The method of claim 5, And a specific item selection signal for a vehicle state is input through an input unit of the telematics device. The method of claim 8, When the specific item selection signal is input, the vehicle self-diagnosis system using a telematics device, characterized in that the reference value and the current numerical value for the selected item is displayed in real time through the display. The method of claim 9, A self-diagnosis system for a vehicle using a telematics device, characterized in that a detailed description and a coping method according to a current numerical value of the selected item are displayed on the display unit. Inputting a request signal relating to diagnostic information of the vehicle; Requesting transmission of vehicle diagnostic information data by the request signal; Receiving and displaying the diagnostic information data, the vehicle self-diagnosis method using a telematics device, characterized in that it comprises. The method of claim 11, The step of inputting a request signal about the diagnostic information of the vehicle, Selecting, by the driver, one of a plurality of groups displayed in the self-diagnosis menu of the telematics display unit through the telematics input unit;  The detailed menu is displayed by the selection, and the driver selects a specific item among the detailed items through an input unit of the telematics. The method of claim 11, The finally displayed diagnostic information data is a default value and a current numerical value for the item selected by the driver. The method of claim 13, The detailed description and the coping method according to the current numerical value are further displayed on the display unit. The method of claim 12, The plurality of groups is a group representing an item of a vehicle state in charge of each electronic control unit (ECU), namely engine ECU, ATM ECU, ABS ECU.

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