Abstract
In this paper, a transducer that measures vibration based on a loudspeaker is described. The mathematical model was derived and simulated by understanding the operating principles of the vibration sensor as a model of an inertial force generator. The experimental setup was carefully designed and the outputs from the ADXL335 accelerometer were used for comparison with the output voltage, Vo of the vibration transducer. The experimental results for Vo are in broad agreement with the accelerometer trends. The ADXL335 accelerometer outputs were also used to validate the vibration transducer model by comparing the vibration transducer output voltage, Vo, with the simulation output voltage, Vso. Both the vibration transducer and simulation outputs obtained peak energy when the weight was set at 171.41 g [gram]. The vibration transducer and approach used to optimize the transducer parameters presented in this paper have the potential to be used as a useful tool for the detection of seismic signals.
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