Adaptive pressure based weight estimation system for a vehicle o

Details Adaptive pressure based weight estimation system for a vehicle o Adaptive pressure based weight estimation system for a vehicle o

1998-06-01

2000-10-24

Louis-Jacques, Jacques H.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

701 36, 280735, 2807301, 180268, 340667, 340666, G06F 1700, B60R 2200

Patent

active

061380679

ABSTRACT:
An improved pressure-based weight estimation system that includes an adaptive technique for reliably and accurately determining the vacant, or unoccupied, seat pressure. The vacant seat pressure is initially determined by a factory calibration procedure, and is thereafter suitably updated by an adaptive learning algorithm based on temperature, time, and the measured pressure. If the seat temperature is within a normal range, and the measured pressure remains at least a predetermined amount below the calibrated vacant seat pressure for at least a predetermined time, a fraction of the difference between the measured and calibrated values is subtracted from the calibrated value to form a new calibration value. The predetermined difference amount determines the sensitivity of the control, and the predetermined time prevents adaptive correction of the calibration value due to transient pressure conditions.

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