Vehicle failure diagnosis apparatus and in-vehicle terminal for vehicle failure diagnosis
First Claim
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1. A vehicle failure diagnosis apparatus, comprising:
- a storage device for storing failure patterns that indicate processes until failures of vehicle control systems in time series regarding learned values to be used for compensation of control in the vehicle control systems;
a communication part;
a record receiving function for receiving records of learned values actually used in the past in the vehicle control systems of vehicles as diagnosis targets from vehicle terminals in the vehicles via the communication part;
a failure time estimating function for estimating failure time of the vehicle control systems by comparing the received records of the learned values and the failure patterns readout from the storage device; and
an estimation result output function for supplying the estimated failure time to the vehicle terminals.
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Abstract
In order to estimate failure times of vehicles, the invention provides a vehicle failure diagnosis apparatus which receives records of learned values actually used in the past in vehicle control systems of vehicles as diagnosis targets from in-vehicle terminals via a communication part, estimates failure time of the vehicle control systems by comparing the received records of the learned values and the failure patterns readout from a failure pattern DB, and outputs the estimated failure time to the in-vehicle terminals.
18 Citations
10 Claims
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1. A vehicle failure diagnosis apparatus, comprising:
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a storage device for storing failure patterns that indicate processes until failures of vehicle control systems in time series regarding learned values to be used for compensation of control in the vehicle control systems;
a communication part;
a record receiving function for receiving records of learned values actually used in the past in the vehicle control systems of vehicles as diagnosis targets from vehicle terminals in the vehicles via the communication part;
a failure time estimating function for estimating failure time of the vehicle control systems by comparing the received records of the learned values and the failure patterns readout from the storage device; and
an estimation result output function for supplying the estimated failure time to the vehicle terminals. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An in-vehicle terminal comprising:
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a storage device that stores failure patterns indicating processes until failures of vehicle control systems in time series regarding learned values to be used for compensation of control in the vehicle control systems, and stores records of the learned values actually used in the past in the vehicle control systems of vehicles as a diagnosis targets;
a failure time estimating function for estimating failure time of the vehicle control system of one of the vehicles that mounts the in-vehicle terminal by comparing the records of the learned values readout from the storage device with the failure patterns readout from the storage device; and
an estimation result output function for externally outputting the estimated failure time. - View Dependent Claims (8, 9)
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10. An in-vehicle terminal comprising:
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a storage device that stores estimation criteria data for estimating failure time of a vehicle control system based on changes in learned values to be used for compensating control in the vehicle control system, and stores records of the learned values actually used in the past in the control system;
a failure time estimating function for estimating failure time of the vehicle control system from learned value changes in the records of the learned values readout from the storage device by using the estimation criteria data of the storage device, and an estimation result output function for externally outputting the estimated failure time.
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Specification