Vehicle rollover sensing

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control

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Details

701 38, 701 45, 701110, 340 40, 280756, 180282, B30R 1602

Patent

active

060029757

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, a first accelerometer measures horizontal acceleration of the vehicle, and a second accelerometer measures vertical acceleration of the vehicle. A current attitude angle is estimated with Kalman filtering and a future attitude angle is predicted at an advance time. 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.

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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 Meausre Angular Rate in Automobiles:, Sensors and Actuators A. 25-27, 1991, pp. 821-824.

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