KR20020082971A - Method for remotely diagonosing vechile via wireless internet communication - Google Patents

Abstract

PURPOSE: A method of remotely diagnosing breakdown of a car is provided to receive a diagnosed result from a car diagnosis server by using wireless Internet communication, thereby preventing car breakdown in advance. CONSTITUTION: A driver connects a wireless terminal with a diagnosis target device(S10), and connects the wireless terminal with a car diagnosis server(S20). A signal of the diagnosis target device is converted through an interface device, and is transmitted to the wireless terminal(S30). The wireless terminal transmits the signal to the car diagnosis server(S40). The signal is processed by the car diagnosis server(S50). A diagnosed result is transmitted to the wireless terminal, and the result is stored in a database of a member of the car diagnosis server(S60). The wireless terminal decides whether or not to continue diagnosing another diagnosis target device(S70). If the diagnosis target device malfunctions(S80), the driver decides whether to request an inspection of his car(S90). If so, the car diagnosis server connects the driver with a repair shop(S100).

Description

Remote fault diagnosis method of vehicle using wireless internet communication {METHOD FOR REMOTELY DIAGONOSING VECHILE VIA WIRELESS INTERNET COMMUNICATION}

The present invention relates to a method for diagnosing a failure of a vehicle. More particularly, the present invention relates to a vehicle using a wireless internet communication capable of diagnosing a failure of a vehicle by receiving a diagnosis processing result from a vehicle diagnosis server using a wireless internet communication and a wireless terminal. It relates to a remote diagnostic method.

Recently, with the rapid development of the electronic industry, the computer industry and the peripheral device technology, the latest technologies in these fields are applied to the vehicle, so that the electronic fuel injection device is adopted in the vehicle, and a large part of the mechanism of the vehicle is the technology of the electronic control. Being replaced in a way. Accordingly, electronic control technology is widely applied to engines, auto transmissions, airbags, antilock brake systems (ABS), traction control systems, etc., which perform essential functions in a vehicle.

If such an electronic control technology is applied to a vehicle and there is a malfunction in the vehicle, a failure diagnosis method that relies on the experience and sensation of a mechanic as in the prior art does not accurately identify the failure of the vehicle and thus cannot provide a proper troubleshooting solution. In addition, if the fault determination is wrong, not only the fault problem is solved but also wastes time and effort. Accordingly, in order to diagnose and cope with a failure of an electronic control system including an electronic control unit, vehicle diagnostic devices such as various scanners or scopes for troubleshooting are developed and used for vehicle failure diagnosis.

On the other hand, most drivers visit the repair shop after the fact that it is determined that the vehicle has a problem, and they are responsible for troubleshooting the vehicle to the mechanic and request the vehicle to be repaired according to the mechanic's diagnosis. Although there is a need for it, there are no regular checkups in practice. However, it only meets mandatory vehicle inspections that are regularly conducted by the country every three or two years.

However, a conventional vehicle diagnostic device, such as a scanner or a scope, has a disadvantage in that it is difficult to carry because it is very large in volume and weight and thus cannot be used for business trips for diagnosis of a broken vehicle. In addition, the conventional vehicle diagnostic device requires a user's advanced knowledge of electronic circuits, waveform analysis, etc., and therefore requires a great skill in use. Also, the conventional vehicle diagnostic device includes a number of unnecessary functions of high technology that are not actually used in the conventional vehicle diagnostic device. There is a problem that is difficult to use unless you are an expert. In addition, when a new vehicle is released, it is inconvenient to upgrade the vehicle diagnostic data for each vehicle diagnostic device, and additional costs are required for the upgrade. Furthermore, the development and production of a conventional vehicle diagnostic device takes a considerable cost, and therefore, the price of the self-diagnostic device is quite high, and thus a maintenance shop cannot easily purchase a vehicle diagnostic device for diagnosing a vehicle failure.

On the other hand, if the vehicle has been operated for a certain period of time, a breakdown occurs frequently due to the aging of the vehicle. Therefore, it is necessary to diagnose the vehicle regularly and prevent the failure in advance, but most drivers should visit the repair shop only after the breakdown occurs. Therefore, there is a problem that a lot of troubleshooting costs. This is because the current cost of regular troubleshooting of the vehicle is high and the trust of the repair shop for the diagnosis is questioned.

In addition, when a vehicle breaks down, the vehicle must be moved to a maintenance shop through self-driving or towing, which makes it impossible to carry out a trip with a car diagnostic device. There is a problem that the diagnosis of the vehicle is not made correctly.

Accordingly, the present invention has been made to solve the above problems and disadvantages of the conventional vehicle failure diagnosis, the object of the present invention is to diagnose the vehicle diagnosis server and the vehicle located in the remote location using a wireless terminal such as a mobile phone The present invention provides a method for remotely diagnosing a vehicle using wireless Internet communication to transmit and receive a signal of a target device to perform a vehicle diagnosis at low cost.

Another object of the present invention is to provide a method for remotely diagnosing a vehicle using wireless internet communication, which enables the self-diagnosis of the vehicle to prevent drivers from failing the vehicle.

Still another object of the present invention is to provide a method for remotely diagnosing a vehicle using wireless Internet communication, which does not incur additional costs due to the upgrade of vehicle diagnostic data for each vehicle diagnostic apparatus.

Still another object of the present invention is to provide a remote diagnosis method for a vehicle using wireless internet communication, which enables a service for visiting a broken vehicle and provides a service for connecting to a maintenance chain through data transmission.

Another object of the present invention is to determine whether the failure of the electronic control part of the vehicle when a customer buys a vehicle in a used car dealer, etc. ?? It is to provide a remote diagnosis method of a vehicle using wireless Internet communication that can be judged and purchased and can provide a significant role to the used car quality assurance system that is to be implemented by the government.

1 is a block diagram showing a remote failure diagnosis system for a vehicle using wireless Internet communication according to the present invention;

2 is a block diagram showing a connection configuration between a wireless terminal and a diagnosis target device of a vehicle by an interface device according to the present invention;

3 is a flowchart of a remote fault diagnosis method for a vehicle using wireless Internet communication according to the present invention;

4 is a flowchart illustrating one example of a diagnostic service that is executed in accordance with the present invention and displayed on a wireless terminal.

♣ Explanation of symbols for main part of drawing ♣

10: vehicle diagnostic server 20: wireless communication network

30: wireless terminal 40: vehicle

42: electronic control unit (ECU) 50: personal computer

60: interface device 62, 64: connector

66: external power

In order to achieve the above objects, a remote diagnosis method of a vehicle using wireless internet communication according to the present invention includes a vehicle diagnosis server having a vehicle diagnosis database, a wireless communication network to which the vehicle diagnosis server is connected, The system is used through a remote diagnosis system of a vehicle using a wireless internet communication comprising a wireless terminal which is connected and communicates with a vehicle having a diagnosis target device connected through the wireless terminal and a connector and an interface device. Connecting the wireless terminal and the diagnosis target device by the connector and the interface device; Connecting the wireless terminal to the vehicle diagnostic server through a wireless communication network; Performing a diagnosis to convert a signal of one selected diagnosis target device through an interface device and to transmit the signal to a wireless terminal; Transmitting a signal of a diagnosis target device from a wireless terminal to a vehicle diagnosis server through a wireless communication network; Processing a signal of the diagnosis target device by the vehicle diagnosis server; And storing the diagnostic processing result and transmitting the diagnostic processing result to the wireless terminal through the wireless communication network.

Hereinafter, a preferred embodiment of a remote diagnosis method for a vehicle using wireless internet communication according to the present invention will be described in detail with reference to the accompanying drawings.

First, the configuration of a vehicle remote diagnosis system using wireless Internet communication according to the present invention will be described. Looking at the overall configuration of the diagnostic system with reference to Figures 1 and 2, the vehicle diagnosis target device, for example, the engine, the automatic transmission, the airbag, ABS, the vehicle to transmit and receive the signal and diagnostic processing results of the traction control system The wireless terminal 30 is communicatively connected to the diagnosis server 10 via the wireless communication network 20, and the wireless terminal 30 is connected to the diagnosis target device of the vehicle 40 by wire. The connection between the wireless terminal 30 and the vehicle 40 is implemented by the interface device 60. The interface device 60 is connected to the ECU 42 which is an example of the diagnosis target device through the connector 64 and the line, and connected to the wireless terminal 30 through the connector 62 and the line. In addition, an external power source 66 may be connected to the interface device 60.

The vehicle diagnostic server 10 includes a server engine 11 and a web page 12 having various contents. The server engine 11 receives a HTTP (HyperText Transfer Protocol) request for accessing a web page of the vehicle diagnostic server 10 and provides a web page 12 to the visitor. In addition, the vehicle diagnostic server 10 includes a member database 13A, a vehicle diagnostic database 13B, a car account book database 13C, and a content database 13D managed by the database management means 13. Here, the vehicle diagnosis database 13B holds vehicle data for all models of all vehicle models, the car account book database 13B holds data of vehicle history for each vehicle of the member, and the content database 13D stores the vehicle data. It holds various information data related to vehicles, such as common sense, causes of each type of vehicle failures, their countermeasures, and legal documents related to vehicle accidents. In addition, the vehicle diagnostic server 10 is provided with a control means 14, transmission and reception means 15, processing means 16 for the operation of the vehicle diagnostic server.

On the other hand, the vehicle diagnostic server 10 is connected to the personal computer 50, such as automobile related companies, maintenance shops, members using the remote diagnosis service of the vehicle according to the present invention through an internet communication network. Accordingly, the vehicle diagnostic server 10 collects and stores various types of data input from the computer 50 such as automobile related companies, maintenance shops, and members. All information and data of the vehicle diagnostic server 10 as well as the remote diagnosis service can be used.

The remote diagnosis method of the vehicle using wireless Internet communication through the remote diagnosis system having the above-described configuration will now be described.

Referring to FIG. 3, FIG. 3 is a flowchart of a method for remotely diagnosing a vehicle using wireless internet communication according to the present invention. In the case where the vehicle actually diagnoses a failure due to a failure, or when a vehicle is normally to be diagnosed, the driver first connects the wireless terminal 30 such as a cellular phone to the connectors 62 and 64 and the interface device 60. Connect to a diagnosis target device, such as the electronic control unit 42 of the vehicle 40, via (S10), on the other hand, the wireless terminal 30 is connected to the vehicle diagnostic server 10 via the wireless communication network (20) (S20). In this manner, after the remote diagnosis system is maintained in a viable state for the remote diagnosis, the diagnosis is performed on the vehicle possessed by the driver. 4 illustrates a case where an engine is selected as a diagnosis target device, as can be seen in step S5. When the diagnosis target device is selected and executed by the wireless terminal 30, a signal of the diagnosis target device is converted through the interface device 60 and transmitted to the wireless terminal 30 (S30).

Next, the wireless terminal 30 transmits a signal of the diagnosis target device transmitted through the wireless communication network 20 to the vehicle diagnosis server 10 (S40), and the diagnosis target device transmitted to the vehicle diagnosis server 10. The signal of is processed by the vehicle diagnostic server 10 (S50). The processed diagnosis result is transmitted to the wireless terminal 30, and is stored in the vehicle account book database 13C of the member of the vehicle diagnostic server 10 (S60). As described above, after the diagnosis of one diagnosis target device is completed, it is determined whether to continue diagnosis of the other diagnosis target device (S70). When the other diagnosis target device is to be diagnosed, the above-described steps S10 to S60 are repeatedly executed. Otherwise, the subsequent steps are performed according to the diagnosis result transmitted to the wireless terminal 30 in step S60. do. If it is confirmed that the diagnosis target device is defective (S80), the driver determines whether or not to apply for inspection to the professional maintenance shop whether the vehicle is abnormal (S90). If there is an application for specialized vehicle inspection, the vehicle diagnostic server 10 connects the driver's desired maintenance shop to the driver (S100). If it is determined in step S80 that there are no defects or does not apply for specialized vehicle inspection in step S90, the remote diagnosis is terminated.

4 illustrates one example of a diagnostic service executed in accordance with the present invention and displayed on a wireless terminal. Figure 4 illustrates the process of the most critical vehicle diagnosis among the services provided by the remote diagnosis method according to the present invention. In step S1, when selecting a vehicle diagnostic service, which is a vehicle diagnostic service, a list of all companies of vehicles currently sold in Korea is displayed (S2). For example, when selecting "Hyundai" among companies, a list of models produced in Hyundai is displayed (S3), and when selecting "Sonata 3" as a model, a list of models of Sonata 3 is displayed (S4). Subsequently, if " 1.8SOHC " is selected among the models of Sonata 3, the list of diagnosis target devices is displayed (S5). The devices to be diagnosed are an engine, an automatic transmission, an airbag, an ABS, and the like, as described above. Selecting an engine among the diagnostic device targets indicates that there is no abnormality in the engine and displays whether to continue diagnosis of another diagnostic device (S6), or as a result of the diagnosis process, "1. Oxygen sensor defective, 2". . Bad air flow sensor, 3. Bad cooling water temperature sensor, 4. No. 1 cylinder sensor, etc. ", and tells you something wrong with the engine (S7). If you select the item of "2. Bad air flow sensor" among the faults of the engine, it will inform you of the result such as "The fuel economy may worsen" according to the bad air flow sensor and will continue to diagnose other diagnosis target devices. Displaying a question asking whether (S8). As a result of the diagnosis of the vehicle diagnosis server 10, when the vehicle has a failure and is to be repaired or to check and maintain the diagnosis target device determined to be defective, the vehicle inspection application is selected from among the service items in step S1. If there is a vehicle inspection request, the driver asks whether to apply for a specialized vehicle inspection (S9-1). Accordingly, when applying for a specialized vehicle inspection, the driver inputs a reservation date and a maintenance shop to receive inspection (S9-2). ).

According to the above, when the driver drives the vehicle and visits the corresponding maintenance shop in order to repair the failure of the vehicle or check the diagnosis target device determined to be defective, the maintenance shop connects to the vehicle diagnosis server 10 and checks the database of the vehicle's account book. Through 13C, it is possible to check the history of the vehicle and the contents of the failure or inspection of the vehicle, and to quickly repair the failure or maintain the devices determined to be defective without further diagnosis. On the other hand, when there is a contact from the driver of the broken vehicle, the maintenance shop carries the wireless terminal 30 and the interface device 60 and the like and performs the maintenance of the business trip by the remote diagnosis method of the vehicle using the wireless Internet communication according to the present invention. can do.

The foregoing has described one embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments, and of course, various substitutions and modifications within the scope of the appended claims and equivalents thereof are also possible. And embodiments may vary.

According to the present invention, a remote diagnosis method for a vehicle using wireless internet communication according to the present invention is inexpensive by transmitting and receiving signals from a central vehicle diagnosis server located at a remote place and a diagnosis target device of a vehicle using a wireless terminal. The vehicle can be diagnosed at a cost, and the vehicle can be diagnosed itself so that drivers can prevent the vehicle from failing. In addition, since the upgrade of the vehicle data for each vehicle diagnostic device is unnecessary, no additional cost is incurred due to the upgrade, and the service for visiting the customer is possible due to the maintenance of a broken vehicle. It can provide services to improve reliability, and can provide additional services such as vehicle diagnosis at gas stations and car washes. In addition, it is possible to transmit the diagnosis results using the web server has the effect that can provide the maintenance chain linkage service through the data transmission.

Claims (3)

A vehicle diagnostic server having a vehicle diagnostic database, a wireless communication network to which the vehicle diagnostic server is connected, a wireless terminal connected to and communicate with the wireless communication network, and a wireless terminal connected through a connector and an interface device Using a system through a remote diagnosis system of a vehicle using wireless internet communication, comprising a vehicle having a diagnosis target device, and connecting the wireless terminal and the diagnosis target device by the connector and the interface device; Connecting the wireless terminal to a vehicle diagnostic server through the wireless communication network; Executing a diagnosis to convert a signal of one selected diagnosis target device through the interface device and to transmit the signal to the wireless terminal; Transmitting a signal of the diagnosis target device from the wireless terminal to the vehicle diagnosis server through the wireless communication network; Processing a signal of a diagnosis target device by the vehicle diagnosis server; And storing the diagnostic processing result and transmitting the diagnostic processing result to the wireless terminal through the wireless communication network. The vehicle according to claim 1, further comprising: requesting a vehicle specialized inspection when the diagnosis process determines that the vehicle is defective, and connecting a maintenance shop when the vehicle specialized inspection is requested. Remote Diagnosis Method. The method of claim 1, wherein the diagnosis processing result is transmitted to and stored in a vehicle account book database stored in the vehicle diagnosis server.