Monitoring device and monitoring method
AssigneeToyota Jidosha Kabushiki Kaisha
InventorTomohiro KOYAMA
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Abstract
A monitoring device includes an acquisition unit configured to acquire acceleration information of a plunger during an injection operation, a determination unit configured to determine presence of an abnormality in a drive mechanism that drives the plunger in a case where a variation width of an acceleration of the plunger in a traveling direction exceeds a value that is predetermined and in a case where a variation frequency of the acceleration of the plunger in the traveling direction includes a component of a frequency that is predetermined, and an output unit configured to output a determination result of the determination unit.
Claims5
A monitoring device comprising:
- an acquisition unit configured to acquire acceleration information of a plunger during an injection operation;
- a determination unit configured to determine presence of an abnormality in a drive mechanism that drives the plunger when both of following conditions are satisfied:
- a variation width of an acceleration of the plunger in a traveling direction exceeds a value that is predetermined, and
- a variation frequency of the acceleration of the plunger in the traveling direction includes a component of a frequency that is predetermined;
- and
- an output unit configured to output a determination result of the determination unit.
A monitoring method comprising:
- acquiring acceleration information of a plunger during an injection operation;
- determining presence of an abnormality in a drive mechanism that drives the plunger when both of following conditions are satisfied:
- a variation width of an acceleration of the plunger in a traveling direction exceeds a value that is predetermined, and
- a variation frequency of the acceleration of the plunger in the traveling direction includes a component of a frequency that is predetermined;
- and
- outputting a result of the determining.
Dependencies are inferred from the claim text.