Vehicle rollover sensing using short-term integration

Details Vehicle rollover sensing using short-term integration Vehicle rollover sensing using short-term integration

1998-02-06

2000-03-14

Cuchlinski, Jr., William A.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

180282, 280735, 340440, B60R 2113

Patent

active

060384956

ABSTRACT:
A rollover sensing apparatus and method are provided for predicting rollover and/or pitchover conditions of a vehicle. An angular rate sensor senses attitude rate of the vehicle and an accelerometer measures vertical acceleration of the vehicle. A current attitude angle is estimated by integration, and a future attitude angle is predicted at an advance time as a function of the estimated current attitude angle and sensed attitude rate. The predicted attitude angle is compared to a threshold and an output is produced for indicating a predicted vehicle rollover condition based on the comparison. A vehicle rollover condition about the longitudinal axis of the vehicle is predicted by comparing a future roll angle to a rollover angle threshold, while a pitchover condition about the lateral axis of a vehicle is predicted by comparing a future pitch angle to a pitch angle threshold.

REFERENCES:
patent: 5610575 (1997-03-01), Gioutsos
patent: 5825284 (1998-10-01), Dunwoody et al.
patent: 5835873 (1998-11-01), Darby et al.
Mike Horton, Charles Kitchin, "A Dual-Axis Tilt Sensor Based on Micromachined Accelerometers", Sensors, Apr. 1996, pp 91-94.
Steiner, Weidel, Kublbeck, Steurer, Hora, "Roll Over Detection", SAE Technical Paper Series, Feb. 24-27. 1997, pp 45-49.
P.E.M. Frere, "Problems of Using Accelerometers to Measure Angular Rate in Automobiles", Sensors and Actuators A. 25-27, 1991, pp. 821-824.

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