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DISTRIBUTED ACTIVE MECHANICAL WAVEGUIDE SENSOR DRIVEN AT MULTIPLE FREQUENCIES AND INCLUDING FREQUENCY-DEPENDENT REFLECTORS
DISTRIBUTED ACTIVE MECHANICAL WAVEGUIDE SENSOR DRIVEN AT MULTIPLE FREQUENCIES AND INCLUDING FREQUENCY-DEPENDENT REFLECTORS
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机译:在多个频率下驱动的分布式有源机械波导传感器,其中包括频率相关的反射器
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摘要
An active mechanical waveguide including an ultrasonically-transmissive material and a plurality of reflection points defined along a length of the waveguide may be driven at multiple resonant frequencies to sense environmental conditions, e.g., using tracking of a phase derivative. In addition, frequency-dependent reflectors may be incorporated into an active mechanical waveguide, and a drive frequency may be selected to render the frequency-dependent reflectors substantially transparent.
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