Title :
Wireless Sensing for Active Noise Control
Author :
Sujbert, L. ; Molnár, K. ; Orosz, Gy. ; Lajkó, L.
Author_Institution :
Dept. of Meas. & Inf. Syst., Budapest Univ. of Technol. & Econ.
Abstract :
Our paper introduces a closed-loop wireless control application based on Berkeley MICAz motes and an Analog Devices AD21061 EZ-KIT LITE board. The system realizes active noise control (ANC) for the suppression of periodic acoustic disturbances. The paper highlights the role of synchronous sampling in wireless ANC applications and introduces the solutions in detail. A PLL-like mechanism takes care of the synchronization, while linear interpolation fits the wireless measurement data for processing in the signal processor. The noise controller is a resonator-based one which has proven its efficiency previously in different physical environments. The working of the system is illustrated by measurement results
Keywords :
acoustic signal processing; active noise control; closed loop systems; interference suppression; interpolation; signal sampling; wireless sensor networks; AD21061 EZ-KIT LITE board; Berkeley MICAz motes; PLL-like mechanism; active noise control; closed-loop wireless control; linear interpolation; periodic acoustic disturbances; signal processor; synchronous sampling; wireless ANC; wireless measurement data; wireless sensing; Acoustic devices; Acoustic measurements; Acoustic noise; Active noise reduction; Control systems; Interpolation; Signal processing; Signal sampling; Wireless sensor networks; Working environment noise; active noise control; interpolation; resonator-based controller; synchronization; wireless control;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE
Conference_Location :
Sorrento
Print_ISBN :
0-7803-9359-7
Electronic_ISBN :
1091-5281
DOI :
10.1109/IMTC.2006.328297
