MULTIPLE ELECTRONIC CONTROL UNIT DIAGNOSING SYSTEM AND METHOD FOR VEHICLE

• US 20140365067A1
• Filed: 11/22/2013
• Published: 12/11/2014
• Est. Priority Date: 06/07/2013
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), YURA Corporation
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group), YURA Corporation
• Inventors: KWON, Hae Yun, PARK, Jun Seo, BAE, Dong Min, KIM, Duk Jun
• Granted Patent: US 9,305,408 B2
• Time in Patent Office: Days
• US Class Current: 701/31.5
• CPC Class Codes: G07C 2205/02 using a vehicle scan tool
• CPC Class Codes: G07C 5/0808 Diagnosing performance data testing of vehicles G01M17/00; testing of electrical installation on vehicles G01R31/005

Abstract

A multiple electronic control unit (ECU) diagnosing system and a method thereof for a vehicle by which a diagnosis time for an ECU can be shortened by using an Ethernet protocol and a communication gateway. The multiple ECU diagnosing system for the vehicle applies a multiple ECU diagnosing algorithm of a one-to-n method which is more efficient than a diagnosis algorithm of a one-to-one method between diagnostic equipment. ECUs for the vehicle are connected through various communication networks (K-Line, CAN, LIN, FlexRay, and MOST) by using a communication gateway transferring messages and signals between the ECUs, thus significantly shortening a diagnosis time for the ECUs and acquiring a large amount of diagnosis information at the same time.

Claims

1. A multiple electronic control unit (ECU) diagnosing system for a vehicle, comprising:

diagnostic equipment installed in the vehicle in which multiple diagnostic information software (MDIS) for diagnostic equipment capable of handling diagnostic instructions for a plurality of ECUs and transmitting and receiving signals;

a multiple diagnostic protocol (MDP), which is an Ethernet communication protocol having a data structure for multiple diagnoses between the diagnostic equipment and a gateway of the vehicle; and

a diagnostic distribution system (DDS) for analyzing the multiple diagnostic protocol and performing diagnosis communications with the ECUs connected to the gateway through a network.

2. The multiple ECU diagnosing system of claim 1, wherein the diagnostic equipment and the diagnostic distribution system (DDS) of the gateway are connected to each other through an Ethernet communication network, and the plurality of ECUs transmitting and receiving diagnostic information to and from the diagnostic distribution system are connected to each other through different communication networks or through one identical communication network.

3. The multiple ECU diagnosing system of claim 2, further comprising communication networks of different speeds including a CAN communication network, a FlexRay communication network, a LIN communication network, and a K-Line communication network, and one identical communication network is selected from the CAN communication network, the FlexRay communication network, the LIN communication network, and the K-Line communication network.

4. A multiple electronic control unit (ECU) diagnosing method for a vehicle, comprising:

inputting diagnosis request information for multiple diagnoses of a plurality of ECUs through multiple diagnostic information software (MDIS);

transmitting the input diagnosis request information toward a gateway of the vehicle connected from diagnostic equipment through an Ethernet communication network in the form of a multiple diagnostic protocol (MDP);

transmitting the multiple diagnostic protocol transmitted from the multiple diagnostic information software through the Ethernet communication network to a diagnostic distribution system of the gateway of the vehicle;

analyzing information on an ECU to be diagnosed from the multiple diagnostic protocol and performing diagnostic communications with the ECUs in the diagnostic distribution system;

transmitting a response message on the diagnosis request information through a communication network to the diagnostic distribution system in the respective ECUs;

recombining the response message of the ECU collected by the diagnostic distribution system and transmitting the response message to the software of the diagnostic equipment through the Ethernet communication network; and

analyzing the recombination information of the multiple diagnostic protocol and providing multiple diagnosis results for the ECUs to a user.

5. The multiple ECU diagnosing method of claim 4, wherein the software of the diagnostic equipment recombines the diagnosis request information selected by the user and transmits the diagnosis request information to the gateway through the Ethernet communication network.

6. The multiple ECU diagnosing method of claim 4, wherein the multiple diagnostic protocol comprises types and number of ECUs to be diagnosed, and the communication network type connected to the ECUs.

7. The multiple ECU diagnosing method of claim 4, wherein when the multiple diagnosis for the plurality of ECUs is diagnosed, the diagnostic equipment and the diagnostic distribution system of the gateway is connected to the Ethernet communication network and the diagnostic distribution system, and the plurality of ECUs transmit and receive the diagnostic information

8. The multiple ECU diagnosing method of claim 7, wherein communication networks of different speeds include a CAN communication network, a FlexRay communication network, a LIN communication network, and a K-Line communication network, and one identical communication network is selected from the CAN communication network, the FlexRay communication network, the LIN communication network, and the K-Line communication network.