Rollover-sensing system for a vehicle and method of operating the same
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United States of America Patent
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May 6, 2003
Grant Date -
Jan 2, 2003
app pub date -
Jun 28, 2001
filing date -
Jun 28, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A method and system of activating a safety device of a vehicle having x, y and z-axes. The method includes generating a y-acceleration signal representative of the acceleration of the vehicle in the y-axis, generating an angular-rate signal representative of the angular velocity of the vehicle with respect to the x-axis, calculating a vehicle angle having a relationship to the angular-rate signal and being representative of the angle of the vehicle about the x-axis, determining an angular-rate threshold having a relationship to the vehicle angle and the y-acceleration signal, comparing the angular-rate signal to the angular-rate threshold, and activating a safety device when the magnitude of the angular-rate signal is greater than the angular-rate threshold.
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