An accelerometer or gravimeter is a device for measuring acceleration and the effects of gravity.
According to the principles of general relativity, the effects of gravity are equivalent to those of acceleration, so an accelerometer can make no distinction between these effects.
In this case the accelerometers are used to detect the rapid deceleration of the vehicle to determine when a collision has occurred and the severity of the collision.
Accelerometers are inertial measurement devices that convert mechanical motion to an electrical signal.
Accelerometers can be supplied with a wide range of sensitivities for special applications such as structural analysis, geophysical measurement, or very high frequency analysis.
An accelerometer's bias voltage is the DC component of the transducer's output signal.
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