H. Fritsch et al., A LOW-FREQUENCY MICROMECHANICAL RESONANT VIBRATION SENSOR FOR WEAR MONITORING, Sensors and actuators. A, Physical, 62(1-3), 1997, pp. 616-620
A micromechanical resonant vibration sensor (MRVS) is presented with a
geometrical structure that is designed for the detection of vibration
s in the low-frequency range. The MRVS is distinguished from conventio
nal piezoelectric and micromechanical acceleration sensors by the util
ization of the resonance effect. The signal-to-noise ratio increases s
ignificantly when the sensor is excited with the designed frequencies.
The vibrational properties of the MRVS have been investigated in the
laboratory. Examples of the sensor response to different vibrational s
ources are analysed under industrial conditions. The capability of the
sensor principle for wear monitoring is discussed. (C) 1997 Elsevier
Science S.A.