SYSTEM AND METHOD FOR DIAGNOSING FAILURE OF SMART SENSOR OR SMART ACTUATOR OF VEHICLE

• US 20150323928A1
• Filed: 10/22/2014
• Published: 11/12/2015
• Est. Priority Date: 05/08/2014
• Status: Abandoned Application

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Yim, Sangjin, Kim, Chang Yu, Youn, Jea Myoung
• Application Number:
  US14/521,188
• Publication Number:
  US 20150323928A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60W 2050/0215 Sensor drifts or sensor failures
• CPC Class Codes: B60W 50/0205 Diagnosing or detecting failures; Failure detection models
• CPC Class Codes: G05B 23/00 Testing or monitoring of control systems or parts thereof monitoring of programme-control systems G05B19/048, G05B19/406

Abstract

A system and method for diagnosing a failure of a smart sensor or a smart actuator of a vehicle are provided to diagnose the failure of the smart sensor or the smart actuator based on a detection result of a plurality of controllers connected as a network performing a plurality of logic detections. The method includes collecting, by a main controller, failure information detected by each of the controllers of the vehicle and determining a failure by integrating the failure information of each controller. In addition, the main controller is configured to request a failure confirmation from each controller when the failure occurs and diagnosing a failure of the smart sensor or the smart actuator when the failure confirmation is received.

Claims

1. A method for diagnosing a failure of a smart sensor or a smart actuator of a vehicle, the method comprising:

collecting, by a main controller, failure information detected by each of a plurality of controllers of the vehicle;

determining, by the main controller, a failure by integrating the failure information of each controller;

requesting, by the main controller, a failure confirmation from each controller when the failure occurs; and

diagnosing, by the main controller, a failure of the smart sensor or the smart actuator in response to receiving the failure confirmation.

2. The method of claim 1, wherein each controller of the vehicle includes a failure detecting logic for detecting a failure of the smart sensor or the smart actuator.

3. The method of claim 1, wherein the determination of a failure by integrating the failure information of each controller determines that the failure occurs when all of the controllers detect the failure.

4. The method of claim 1, wherein the determination of a failure by integrating the failure information of each controller determines that the failure occurs when a predetermined number of the controllers detect the failure.

5. The method of claim 1, wherein the determination of a failure by integrating the failure information of each controller determines that the failure occurs when a failure criterion value calculated by each controller by applying a weight value is greater than a predetermined value.

6. The method of claim 1, wherein the determination of a failure by integrating the failure information of each controller determines that the failure occurs when one or more of the controllers detect the failure.

7. The method of claim 1, further comprising:

requesting, by the main controller, a failure recovery of the smart sensor or the smart actuator after diagnosing the final failure of the smart sensor or the smart actuator.

8. A system for diagnosing a failure of a smart sensor or a smart actuator of a vehicle, the system comprising:

a memory configured to store program instructions; and

a processor configured to execute the program instructions, the program instructions when executed configured to;

collect failure information detected by each of a plurality of controllers of the vehicle;

determine a failure by integrating the failure information of each controller;

request a failure confirmation from each controller when the failure occurs; and

diagnose a failure of the smart sensor or the smart actuator in response to receiving the failure confirmation.

9. The system of claim 8, wherein each controller of the vehicle includes a failure detecting logic for detecting a failure of the smart sensor or the smart actuator.

10. The system of claim 8, wherein the determination of a failure by integrating the failure information of each controller determines that the failure occurs when all of the controllers detect the failure.

11. The system of claim 8, wherein the determination of a failure by integrating the failure information of each controller determines that the failure occurs when a predetermined number of the controllers detect the failure.

12. The system of claim 8, wherein the determination of a failure by integrating the failure information of each controller determines that the failure occurs when a failure criterion value calculated by each controller by applying a weight value is greater than a predetermined value.

13. The system of claim 8, wherein the determination of a failure by integrating the failure information of each controller determines that the failure occurs when one or more of the controllers detect the failure.

14. The system of claim 8, wherein the program instructions when executed are further configured to:

request a failure recovery of the smart sensor or the smart actuator after diagnosing the final failure of the smart sensor or the smart actuator.

15. A non-transitory computer readable medium containing program instructions executed by a controller, the computer readable medium comprising:

program instructions that collect failure information detected by each of a plurality of controllers of the vehicle;

program instructions that determine a failure by integrating the failure information of each controller;

program instructions that request a failure confirmation from each controller when the failure occurs; and

program instructions that diagnose a failure of the smart sensor or the smart actuator in response to receiving the failure confirmation.

16. The non-transitory computer readable medium of claim 15, wherein each controller of the vehicle includes a failure detecting logic for detecting a failure of the smart sensor or the smart actuator.

17. The non-transitory computer readable medium of claim 15, further comprising:

program instructions that request a failure recovery of the smart sensor or the smart actuator after diagnosing the final failure of the smart sensor or the smart actuator.

18. The non-transitory computer readable medium of claim 15, wherein the determination of a failure by integrating the failure information of each controller determines that the failure occurs when a failure criterion value calculated by each controller by applying a weight value is greater than a predetermined value.

19. The non-transitory computer readable medium of claim 15, wherein the determination of a failure by integrating the failure information of each controller determines that the failure occurs when one or more of the controllers detect the failure.

20. The non-transitory computer readable medium of claim 15, wherein the determination of a failure by integrating the failure information of each controller determines that the failure occurs when a predetermined number of the controllers detect the failure.