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US 12,728,688 B2Granted
Sensor abnormality detection device
AssigneeHitachi Astemo, Ltd.
InventorsRyusuke Hirao, Masatoshi Yamahata, Shu Kato
Life of this patent
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AssigneeHitachi Astemo, Ltd.
InventorsRyusuke Hirao, Masatoshi Yamahata, Shu Kato
Estimating the term…
A CAN input unit (traveling speed input unit) to which a traveling speed of a vehicle is to be input and sprung acceleration input units (a first sensor input unit and a second sensor input unit) to which signal fluctuation ranges (vibration levels) of sprung acceleration sensors are to be input are included. An ECU includes a first determination unit which determines whether a traveling speed provided by the CAN input unit is equal to or more than a first threshold value, and a signal fluctuation range of one of a sprung acceleration sensor value of the sprung acceleration input unit serving as the first sensor input unit and a sprung acceleration sensor value of the sprung acceleration input unit serving as the second sensor input unit is smaller than a first fluctuation range and smaller than a signal fluctuation range of another of the first and second sensor input values.
A sensor abnormality detection device for detecting abnormality of at least three sensors provided in a vehicle, the sensor abnormality detection device comprising:
Dependencies are inferred from the claim text.