4. Vibration and acceleration sensors
The principle is to measure the force to which a mass M, called "seismic mass", is subjected under the action of acceleration. The measuring range is generally expressed in g (gravitational acceleration).
The main types of accelerometer are :
piezoelectric accelerometers (figure
12
a,
b,
c,
d);
piezoresistive accelerometers (figure
12...
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Vibration and acceleration sensors