Process for monitoring the condition of motor vehicle wheels

Details Process for monitoring the condition of motor vehicle wheels Process for monitoring the condition of motor vehicle wheels

2005-10-25

2005-10-25

Jeanglaude, Gertrude A. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle diagnosis or maintenance indication

C340S444000, C702S146000, C702S147000

Reexamination Certificate

active

06959234

ABSTRACT:
A process and device for monitoring the state of a wheel of a motor vehicle in which an output signal of a sensor is converted into an essentially rectangular pulse signal. A respective duration of the pulse is measured; and an especially weighted average between the duration of a current value and a preceding value is determined, wherein a current value and a preceding value exhibit a time interval and/or lie a specific step size apart. A correction factor is determined from each deviation between the duration of a current value and a respective mean value. A step size of the correction method is matched to an error order of a fault. Preferably the step size with a periodic deviation of the mthorder that is to be eliminated is determined according to the formula j=1/m×n/4; for motor vehicles in particular according to the formula j=1/m×12.

REFERENCES:
patent: 5541859 (1996-07-01), Inoue et al.
patent: 6014599 (2000-01-01), Inoue et al.
patent: 6266594 (2001-07-01), Ishikawa
patent: 4409846 (1994-09-01), None
patent: 19735313 (1999-02-01), None

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