Co-operative on-board and off-board component and system diagnosis and prognosis
First Claim
1. A cooperative diagnostic system for generating a prognosis of at least one component in a vehicle, the system comprising:
- an in-vehicle diagnostic unit determining a degradation signature of the at least one component each time an occurrence of a condition is triggered; and
an off-vehicle diagnostic unit receiving the degradation signature and determining a state-of-health of the at least one component as a function of the degradation signature;
wherein the determined degradation signature of the at least one component is wirelessly transmitted to the off-vehicle diagnostic unit upon the occurrence of the triggered condition, the off-vehicle diagnostic unit determining a rate-of-change in the state-of-health of the at least one component, the off-vehicle diagnostic unit determining whether the rate-of-change in the state-of-health is greater than a threshold, the off-vehicle diagnostic unit requesting additional information from the vehicle in response to the rate-of-change in the state-of-health being greater than the threshold, the additional information relating to operating parameter data associated with the at least one component, the off-vehicle diagnostic unit receiving the requested information and predicting a time-to-failure of the at least one component.
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Accused Products
Abstract
A cooperative diagnostic and prognosis system for generating a prognosis of at least one component in a vehicle. An in-vehicle diagnostic unit determines a diagnostic signature of the component each time an occurrence of a condition is triggered and transmits the diagnostic signature to an off-board diagnostic unit. The off-vehicle diagnostic unit determines a SOH of the component and a rate-of-change in the SOH of the component. The off-vehicle diagnostic unit determines whether the rate-of-change in the SOH is greater than a threshold. The off-vehicle diagnostic unit requests additional information from the vehicle in response to the rate-of-change in the SOH being greater than the threshold. The additional information relating to operating parameter data associated with the component. The off-vehicle diagnostic unit receives the requested information and predicts a time-to-failure of the component.
51 Citations
21 Claims
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1. A cooperative diagnostic system for generating a prognosis of at least one component in a vehicle, the system comprising:
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an in-vehicle diagnostic unit determining a degradation signature of the at least one component each time an occurrence of a condition is triggered; and an off-vehicle diagnostic unit receiving the degradation signature and determining a state-of-health of the at least one component as a function of the degradation signature; wherein the determined degradation signature of the at least one component is wirelessly transmitted to the off-vehicle diagnostic unit upon the occurrence of the triggered condition, the off-vehicle diagnostic unit determining a rate-of-change in the state-of-health of the at least one component, the off-vehicle diagnostic unit determining whether the rate-of-change in the state-of-health is greater than a threshold, the off-vehicle diagnostic unit requesting additional information from the vehicle in response to the rate-of-change in the state-of-health being greater than the threshold, the additional information relating to operating parameter data associated with the at least one component, the off-vehicle diagnostic unit receiving the requested information and predicting a time-to-failure of the at least one component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification