Acoustic sensors
Abstract
The chapter opens with an overview of acoustic parameters and properties. Next the operation and performance of piezoelectric and electrostatic transducers are discussed. In the ensuing section various methods for distance measurements are given, generally based on the ToF principle. Finally, in the application section, we discuss examples of ranging and imaging, as well as nondestructive testing, inspection using acoustic principles and interfacing.
Keywords
Acoustic properties; sound propagation; acoustic impedance; electrostatic transducers, piezoelectric transducers; directivity; ToF distance measurement; navigation; NDT; interfacing
The primary measurand of an acoustic sensor is sound intensity. In combination with ...
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