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E46iCCVM/ST039/3/21/00
Clinometer
The clinometer inside the sensor consists of three level floats to detect body tilting, trans-
verse and longitudinal acceleration for roll bar deployment. two floats are positioned on
opposing angles of 52 degrees to the horizontal axis of the vehicle. The third float is posi-
tioned at an angle of 72 degrees to the longitudinal axis. LED transmitters and phototran-
sistor receivers are positioned to read the air bubble float as it moves in the glass tube.
If the vehicle starts to roll over sideways or end-to-end, beyond the critical angles, the air
bubble will move and interrupt the LED signal. The electronics of the sensor will then trig-
ger the solenoids and the roll bars will deploy.
ART-CLINOMETER
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