Battery-less PWAS-based wireless acoustic emission sensor

Md Mazharul Islam; Farshad Zahedi; Haiying Huang

doi:10.1117/12.2010239

19 April 2013 Battery-less PWAS-based wireless acoustic emission sensor

Md Mazharul Islam, Farshad Zahedi, Haiying Huang

Proceedings Volume 8692, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013; 86924C (2013) https://doi.org/10.1117/12.2010239
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2013, San Diego, California, United States

Abstract

Battery-less wireless transmission of acoustic emission (AE) signal acquired using a PWAS is demonstrated in this paper. The wireless AE sensor is equipped with a passive wireless transponder that receives a microwave carrier signal and up-converts the AE signal to microwave frequencies for wireless transmission. A low voltage ultrasound amplifier was designed, fabricated, and tested to amplify the AE signal and to provide a better impedance matching between the PWAS and the 50 Ω wireless transponder. A light-based energy harvester was adopted to drive the low-power voltage amplifier so that no battery is needed at the wireless sensor node. The energy harvesting devices and the amplifier were characterized using ultrasound pitch-catch and pencil lead break experiments. The design, implementation, and characterization of the wireless AE sensing system are described.

Citation Download Citation

Md Mazharul Islam, Farshad Zahedi, and Haiying Huang "Battery-less PWAS-based wireless acoustic emission sensor", Proc. SPIE 8692, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013, 86924C (19 April 2013); https://doi.org/10.1117/12.2010239

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