期刊
IEEE SENSORS JOURNAL
卷 13, 期 2, 页码 691-700出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2012.2226518
关键词
Airflow energy harvesting; electromagnetic; heat, ventilation, and air condition (HVAC); low airflow speed; smart building
This paper presents a novel miniature airflow energy harvester for wireless sensing applications. The energy harvester consists of a wing that is attached to a cantilever spring. The wing oscillates in response to a steady airflow. An electromagnetic transducer is used to extract electrical energy from the airflow-induced oscillations. Both vertical and horizontal orientations are studied. Experiments show that such a generator can operate at airflow speeds as low as 1.5 m . s(-1), which compares well to turbines. When the airflow speed is over 2 m . s(-1), the average output power exceeds 90 mu W, which is sufficient for powering wireless sensor nodes in heat, ventilation, and air conditioning systems in buildings.
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