Error state detection device for automobile tires
2014
Provided is an error state detection device that does not require provision therein of a special sensor and which is capable of detecting error states for tires during travel, reliably detecting tire errors, making drivers aware of said errors, promoting safety confirmation, and of achieving preventative safety. The error state detection device has: a rotation sensor (2) that detects rotation of a wheel (1) so as to measure automobile speed; a signal processing unit (3) that extracts fluctuation in rotation speed synchronized to rotation, from rotation signals detected by the rotation sensor, and obtains a rotation speed fluctuation pattern synchronized to the rotation, from fluctuation in the rotation speed across a plurality of rotations; and an error state determination unit (4) that finds the difference between this obtained rotation speed fluctuation pattern and a rotation speed fluctuation pattern serving as a set reference, estimates the error state of the tire from this found difference, and outputs error information.
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