VEHICLE DATA ANALYSIS APPARATUS, VEHICLE DATA ANALYSIS METHOD, AND DEFECT DIAGNOSIS APPARATUS
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Abstract
A vehicle data analysis apparatus analyzes vehicle data that indicates chronological change of a vehicle state. The vehicle data analysis apparatus is provided with a computing unit and a recognition unit. The computing unit is configured to make obvious data fluctuation accompanying the development, in the vehicle data, of mechanical or control-related fault in a vehicle control system. The recognition unit is configured to recognize the vehicle data to be considered during vehicle fault diagnosis on the basis of a result of computation by the computing unit.
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Citations
30 Claims
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1-16. -16. (canceled)
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17. A vehicle data analysis apparatus for analyzing vehicle data indicating time-series changes of a state of a vehicle, the apparatus comprising:
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a computing section configured to perform computation for uncovering a data fluctuation in the vehicle data that results from a mechanical or control-related abnormality in a vehicle control system; and a recognizing section configured to recognize, based on a computation result obtained by the computing section, vehicle data to be subject to a diagnosis of the abnormality in the vehicle as a diagnosis target, wherein as the computation, the computing section obtains the amount of change in the vehicle data per unit time, the computing section identifies vehicle data that indicates that the calculated amount of change is equal to or greater than a threshold value that indicates an amount of change caused by data fluctuation resulting from mechanical or control-related abnormality in the vehicle control system, and the recognizing section is configured to exclude vehicle data that indicates an amount of change caused by data fluctuation resulting from a human factor. - View Dependent Claims (19, 22, 23, 24, 25)
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18. A vehicle data analysis apparatus for analyzing vehicle data indicating time-series changes of a state of a vehicle, the apparatus comprising:
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a computing section configured to perform computation for uncovering a data fluctuation in the vehicle data that results from a mechanical or control-related abnormality in a vehicle control system; and a recognizing section configured to recognize, based on a computation result obtained by the computing section, vehicle data to be subject to a diagnosis of the abnormality in the vehicle as a diagnosis target, wherein the vehicle data analysis apparatus further comprises a storage device in which the vehicle data is accumulated, as the computation, the computing section performs a computation for obtaining statistical distribution of the vehicle data stored in the storage device, and the recognizing section is configured to perform a process in which the recognizing section recognizes vehicle data located around a median in the obtained statistical distribution, excludes vehicle data that deviates from the median, and extracts vehicle data that has a relatively large deviation in the recognized vehicle data from the storage device as the diagnosis target vehicle data.
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20. A vehicle data analysis apparatus for analyzing vehicle data indicating time-series changes of a state of a vehicle, the apparatus comprising:
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a computing section configured to uncover a data fluctuation in the vehicle data that results from a mechanical or control-related abnormality in a vehicle control system; and a recognizing section configured to recognize, based on a computation result obtained by the computing section, vehicle data to be subject to a diagnosis of the abnormality in the vehicle as a diagnosis target, wherein the vehicle data includes, as data reflecting a characteristic of a driver'"'"'s operation of the vehicle, a sensor dataset and a control dataset, the sensor dataset indicating changes of a value detected by a sensor that detects the state of the vehicle, and the control dataset being an output of a vehicle control device that reflects changes of the sensor dataset, the computing section obtains, in the computation, a difference between the sensor dataset and a control dataset correlated with the sensor dataset in the control dataset reflecting changes of the sensor dataset, and the recognizing section is configured to, based on the computation result obtained by the computing section, identify, as the diagnosis target, vehicle data that includes a data fluctuation based on a factor different from the driver'"'"'s vehicle operation of the vehicle and to exclude data fluctuation resulting from a human factor contained in the control dataset. - View Dependent Claims (21)
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26. A vehicle data analysis method for analyzing vehicle data indicating time-series changes of a state of a vehicle, the method comprising:
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uncovering a data fluctuation in the vehicle data that results from a mechanical or control-related abnormality in a vehicle control system; and identifying the vehicle data that has the uncovered data fluctuation to be subject to diagnosis of the abnormality in the vehicle as a diagnosis target, wherein the uncovering is to obtain the amount of change in the vehicle data per unit time, and the identification is to select vehicle data that indicates that the calculated amount of change per unit time in the vehicle data is equal to or greater than a threshold value that indicates an amount of change caused by data fluctuation resulting from the mechanical or control-related abnormality in the vehicle control system and to exclude vehicle data that indicates an amount of change caused by data fluctuation resulting from a human factor. - View Dependent Claims (28)
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27. A vehicle data analysis method for analyzing vehicle data indicating time-series changes of a state of a vehicle, the method comprising:
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uncovering a data fluctuation in the vehicle data that results from a mechanical or control-related abnormality in a vehicle control system; and identifying the vehicle data that has the uncovered data fluctuation to be subject to diagnosis of the abnormality in the vehicle as a diagnosis target, wherein the vehicle data analysis method further comprises accumulation of the vehicle data, the uncovering is to obtain statistical distribution of the stored vehicle data, and the identification is to recognize vehicle data located around a median in the vehicle data represented as a statistical distribution, to exclude vehicle data that deviates from the median, and to identify vehicle data that has a relatively large deviation among the recognized vehicle data as the diagnosis target vehicle data.
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29. A vehicle data analysis method for analyzing vehicle data indicating time-series changes of a state of a vehicle, the method comprising:
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uncovering a data fluctuation in the vehicle data that results from a mechanical or control-related abnormality in a vehicle control system; and identifying the vehicle data that has the uncovered data fluctuation to be subject to diagnosis of the abnormality in the vehicle as a diagnosis target, wherein the vehicle data includes, as data reflecting a characteristic of a driver'"'"'s operation of the vehicle, a sensor dataset and a control dataset, the sensor dataset indicating changes of a value detected by a sensor that detects the state of the vehicle, and the control dataset being an output of a vehicle control device that reflects changes of the sensor dataset, the uncovering is to obtain a difference between the sensor dataset and a control dataset correlated with the sensor dataset in the control dataset reflecting changes of the sensor dataset, and the identification is to identify, as the diagnosis target, vehicle data that includes a data fluctuation based on a factor different from the driver'"'"'s vehicle operation of the vehicle and to exclude data fluctuation resulting from a human factor contained in the control dataset. - View Dependent Claims (30)
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Specification