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Low Power SHM via Frequency-Steerable Acoustic Transducers and Compressive Sensing
Low Power SHM via Frequency-Steerable Acoustic Transducers and Compressive Sensing [1930]
Автор(ы): L. De Marchi, E. Baravelli, N. Testoni, N. Speciale, M. Ruzzene
Количество страниц: 7
Год: 2012
Аннотация[239 КБ] 
Код: 10943
Описание
6th European Workshop on Structural Health Monitoring. Dresden. Germany. 2012. Report. The weight penalty and maintenance concerns associated with wiring a large number of transducers have to be addressed for widespread field deployment of Structural Health Monitoring (SHM) systems. Wireless sensors can simplify such deployment. However, a major limitation of wireless ultrasound sensing technology is the incompatibility between the high frequency of the ultrasound signals and the limited data throughput of existing wireless transponders. In this work, a novel transduction concept based on shaped sensors is combined with an innovative acquisition scheme to fulfill two main objectives: 1) to reduce the number of sensing elements; 2) to lower the data throughput with compressive acquisitions.
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