Mitsubishi Electric Corporation

Tomoharu Takeuchi

Takeshi Takeuchi

Norimitsu Nagashima

A dependence relation database () stores dependence relation information () wherein a dependence relation between each constituting apparatus among a plurality of constituting apparatuses, and an importance degree to represent intensity of the dependence relation are set, with a vehicle formation () being a vertex. An apparatus evaluation unit () calculates a soundness estimation value to represent soundness of a terminal constituting apparatus that does not have a constituting apparatus whereon the own constituting apparatus depends among the plurality of constituting apparatuses. A formation evaluation unit () acquires the dependence relation information (), and by using a soundness estimation value of each constituting apparatus among the plurality of constituting apparatuses including the soundness estimation value of the terminal constituting apparatus, and an importance degree of the dependence relation, calculates a soundness estimation value in consideration of the importance degree of the dependence relation of an evaluation target apparatus that is a constituting apparatus being an evaluation target among the plurality of constituting apparatuses, which has a constituting apparatus whereon the own evaluation target apparatus depends.

Condition evaluation device, condition evaluation method and computer readable medium

A device analysis apparatus includes: an operation data storage unit storing operation data indicating an operation state of a device; a feature quantity data generation unit generating feature quantity data of the device by using the operation data; a feature quantity data storage unit storing the feature quantity data; a first computation unit generating first data indicating behavior of the feature quantity data in units of a set term by using the feature quantity data stored in the feature quantity data storage unit; a second computation unit generating second data indicating behavior of latest feature quantity data by using one or more pieces of the latest feature quantity data newer than the feature quantity data used in generating the first data, among the feature quantity data stored in the feature quantity data storage unit; and a display unit displaying the first data and the second data in one graph.

Device analysis apparatus, device analysis method, and storage medium

A deviation inclination calculation unit () calculates a deviation score by using evaluation data obtained from a subject apparatus as an input, in each of a plurality of outlier detection methods specifying data deviated from other data from among subject data, and calculating deviation scores indicating deviation degrees of the data specified, and calculates deviation inclination information from the deviation scores calculated. An abnormality detection unit () calculates, for each abnormality pattern, a similarity degree between deviation sensitivity information indicating sensitivity for each of a plurality of abnormality patterns with respect to each of the plurality of outlier detection methods, and the deviation inclination information calculated, and detects an abnormality of the subject apparatus.

Abnormality detection device, abnormality detection method and computer readable medium

A fuel efficiency estimation system includes: a velocity profile calculation unit to calculate a velocity profile indicating a change in velocity of a motor vehicle traveling a traveling route; a velocity disturbance calculation unit to calculate, based on disturbance information indicating a disturbance event occurring on the traveling route and traveling history information collected from the motor vehicle traveling the traveling route, an attenuation factor, which is a ratio of attenuation of the velocity of the motor vehicle traveling the traveling route, as a velocity disturbance correction coefficient; and a fuel efficiency calculation unit to calculate fuel efficiency of the motor vehicle traveling the traveling route by using the velocity profile and the velocity disturbance correction coefficient.

Fuel efficiency estimation system, fuel efficiency estimation method, and computer readable medium

A fuel efficiency estimation system includes a traveling velocity calculation unit () to store a link traveling velocity () for each link as a road section configuring a road in a traveling velocity DB () and a traveling velocity extraction unit () to extract, based on a traveling route (), a link traveling velocity () on a link included in the traveling route () from the traveling velocity DB (). The fuel efficiency estimation system also includes a velocity profile generation unit () to generate a velocity profile () indicating a change in velocity of a motor vehicle traveling the traveling route () by using the link traveling velocity () and an estimated fuel efficiency calculation unit () to calculate fuel efficiency of the motor vehicle traveling the traveling route () based on the velocity profile ().

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Tokyo, Japan

Tomoharu Takeuchi