Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1997-03-07
1998-06-02
Hofsass, Jeffrey A.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340442, 340671, 731465, B60C 2300
Patent
active
057606820
ABSTRACT:
Wheel speed values for each of four wheels are collected and analyzed for a statistical variation which would indicate low tire pressure. Prior to analysis, and following reset of the system, calibration factors are determined for each of the wheels to compensate rolling radius variations, and subsequently used to correct all wheel speed values. The corrected speed values are then filtered to exclude values which represent wheel slippage, rough road fluctuations, vehicle cornering, and uphill or downhill travel. When a sufficient number of values have been collected, an F-value is calculated substantially according to the statistical method "analysis of the variance", and the F-value is compared to an empirically determined value corresponding to a predetermined pressure loss. This comparison can provide the basis for a driver warning. Since a larger F-value indicates a larger statistical difference in wheel speeds, the value can be rechecked after a further interval for additional pressure loss.
REFERENCES:
patent: 4876528 (1989-10-01), Walker et al.
patent: 5483220 (1996-01-01), Kushimoto et al.
patent: 5578984 (1996-11-01), Nakajima
patent: 5589816 (1996-12-01), Jones
patent: 5614882 (1997-03-01), Latarnik et al.
patent: 5629478 (1997-05-01), Nakajima et al.
Walpole et al., Probability and Statistics for Engineers and Scientists 2Ed. pp. 365-375.
Liu John Yong
Sager Frank
Hofsass Jeffrey A.
Robert & Bosch GmbH
Wu Daniel J.
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