Measuring and testing – Speed – velocity – or acceleration – Acceleration determination utilizing inertial element
Patent
1996-06-04
1998-09-15
Chapman, John E.
Measuring and testing
Speed, velocity, or acceleration
Acceleration determination utilizing inertial element
280735, 188181A, G01P 1512
Patent
active
058081976
ABSTRACT:
The vehicle control system incorporates an accelerometer which is particularly adapted for use in vehicles due to its readily compensated temperature sensitivity and stable zero g bias. The accelerometer for use in the vehicle control system includes a hermetically sealed enclosure containing a fluid and two temperature sensing elements positioned within the enclosure. When the fluid within the enclosure is heated the convective flow pattern within the enclosure is affected by acceleration of inclination of the enclosure. This change in the convective flow pattern is measured by measuring a temperature difference between the temperature sensing elements to determine the acceleration of the enclosure. The accelerometer provides improved performance over silicon micromachined accelerometers and provides an economical and reliable alternative to other types of accelerometers used in a variety of automotive applications including navigation systems, anti-lock breaking systems, suspension systems, airbag arming, and vehicle tilt sensing applications.
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Chapman John E.
Remec, Inc.
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