Liu Lichuan, Gujjula Shruthi, Kuo Sen M
Department of Electrical Engineering, Northern Illinois University, DeKalb, IL 60115, USA.
Annu Int Conf IEEE Eng Med Biol Soc. 2009;2009:935-8. doi: 10.1109/IEMBS.2009.5333780.
Excessive noise levels inside infants incubators in neonatal intensive care units (NICU) contribute to number of harmful effects on the infant's health. This paper develops and implements practical active noise control (ANC) systems for the infant incubators. The filtered-X least mean square (FXLMS) algorithm is used to cancel the noise inside the incubator. The multi-channel and pseudo multi-channel ANC systems are proposed to enhance the noise cancellation performance in terms of cancellation gain and quiet zone. An experimental setup based on real Giraffe incubator from GE Healthcare is used for real-time experiments. The results show that the ANC system can dramatically reduce the noise and cost effective.
新生儿重症监护病房（NICU）中婴儿培养箱内过高的噪音水平会对婴儿健康产生多种有害影响。本文为婴儿培养箱开发并实施了实用的有源噪声控制（ANC）系统。采用滤波-X最小均方（FXLMS）算法来消除培养箱内的噪声。提出了多通道和伪多通道ANC系统，以在消除增益和安静区域方面提高噪声消除性能。基于通用电气医疗集团的真实长颈鹿培养箱搭建了实验装置用于实时实验。结果表明，该ANC系统能显著降低噪声且具有成本效益。
