FAILURE-DIAGNOSIS INFORMATION COLLECTION SYSTEM
First Claim
1. A failure-diagnosis information collection system comprising:
- a vehicle abnormality detection means for detecting a plurality of abnormality items, the vehicle abnormality detection means including a decision means for deciding whether a detected one of the plurality of abnormality items has actually occurred, and if a time during which the decision means continuously decides whether the abnormality has occurred reaches an abnormality confirmation time, storing abnormality information signifying that the abnormality has occurred, wherein;
the abnormality confirmation time varies depending on the abnormality detection means; and
the vehicle abnormality detection means includes a plurality of means storing time-instant information associated with an abnormality recognition time at which the decision means changes from deciding that no abnormality has occurred to deciding that an abnormality has occurred, the time-instant information stored as an abnormality unconfirmed decision.
1 Assignment
0 Petitions
Accused Products
Abstract
A failure-diagnosis information collection system facilitates failure diagnosis in a vehicle. Electronic control units (ECUs) constituting an onboard network perform abnormality detection processing for a detected abnormality. When a duration during which an abnormality recognizing condition for a detected abnormality is established reaches an abnormality recognition time, abnormality information and a principal time stamp associated with the time point are stored. When the abnormality recognizing condition is established for the first time, a first preliminary time stamp that is time-instant information associated with the time point is stored. When the duration during which the abnormality recognizing condition is established reaches half of the abnormality recognition time, a second preliminary time stamp that is time-instant information associated with the time point is stored. Consequently, an abnormality that is a major factor having triggered other multiple abnormalities can be readily identified based on the first and second preliminary time stamps.
-
Citations
14 Claims
-
1. A failure-diagnosis information collection system comprising:
-
a vehicle abnormality detection means for detecting a plurality of abnormality items, the vehicle abnormality detection means including a decision means for deciding whether a detected one of the plurality of abnormality items has actually occurred, and if a time during which the decision means continuously decides whether the abnormality has occurred reaches an abnormality confirmation time, storing abnormality information signifying that the abnormality has occurred, wherein; the abnormality confirmation time varies depending on the abnormality detection means; and the vehicle abnormality detection means includes a plurality of means storing time-instant information associated with an abnormality recognition time at which the decision means changes from deciding that no abnormality has occurred to deciding that an abnormality has occurred, the time-instant information stored as an abnormality unconfirmed decision. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A failure-diagnosis information collection system including a decision means that continuously decides whether a detected abnormality has actually occurred, and, if a time during which the decision means continuously decides whether the abnormality has occurred reaches an abnormality confirmation time, the decision means stores abnormality information signifying that the abnormality has occurred, the failure-diagnosis information collection system comprising:
-
a storage means in which N time-instant information elements associated with specific time points can be stored, where N denotes an integer greater than or equal to 2, the specific time points coming before the time during which the decision means continuously decides whether the abnormality has occurred reaches the abnormality confirmation time after the decision means decides for the first time that the abnormality has occurred, wherein; up to N time-instant information elements associated with times at which the specific time points have come, beginning with the latest time-instant information are stored in the storage means. - View Dependent Claims (14)
-
Specification