Measuring and testing – Speed – velocity – or acceleration – Acceleration determination utilizing inertial element


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350285, G01P 1508




The present accelerometer uses the total light reflection of a prism for suring an acceleration force by disturbing such total reflection in accordance with the displacement or deflection of a body located close to a boundary surface of said prism, and responsive to the movement of an inertia mass which in turn responds to the acceleration force. The reflected light is measured by a photosensitive device and the resulting electrical signal is a direct measure for the size of the acceleration force. In order to make the measuring of the acceleration force independent of variations in the intensity of the light emitted by a light source used as part of the accelerometer, a reference signal may also be produced to form a quotient of the measured signal and the reference signal.

patent: 2565514 (1951-08-01), Pajes
patent: 3443098 (1969-05-01), Lewis


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