Surface acoustic wave accelerometer

Details Surface acoustic wave accelerometer Surface acoustic wave accelerometer

1984-07-13

1986-11-11

Levy, Stewart J.

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

73517AV, 310329, G01P 1509

Patent

active

046215301

ABSTRACT:
A differential surface acoustic wave (SAW) accelerometer comprises a resilient beam 1 one end of which is clamped in a support 2. Opposite faces of the beam are provided with SAW transducers 3, 4 and 6, 7 which respectively form delay lines driven by oscillator 5. Means are introduced for setting the beam into a low frequency mechanical flexural oscillation. The two outputs are connected in antiphase so that under conditions of no acceleration null points in the output waveform will be equally spaced. During acceleration the time intervals between successive nulls will become unequal.

REFERENCES:
patent: 3848144 (1974-11-01), Schissler
patent: 3863497 (1975-02-01), van de Vaart et al.
patent: 3878477 (1975-04-01), Dias et al.
patent: 4306456 (1981-12-01), Maerfeld
patent: 4333342 (1982-06-01), Gilden et al.

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