Development of an Indoor Airflow Energy Harvesting System for Building Environment Monitoring
Development of an Indoor Airflow Energy Harvesting System for Building Environment Monitoring
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DOI：
10.3390/en7052985
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发表时间：
2014-05-01
期刊：
影响因子：
3.2
通讯作者：
Li, Wen Jung
中科院分区：
文献类型：
--
作者：
Fei, Fei;Zhou, Shengli;Li, Wen Jung
无线传感器网络（WSNs）已被广泛应用于智能建筑管理应用。典型地，室内环境参数（诸如照明、温度、湿度和空气质量）由智能建筑物管理系统监测和调节。然而，由于在传感器节点处使用的电池的寿命短，这种系统的维护一直是劳动密集型和耗时的。本文讨论了一种无电池的自供电系统，它将通风管道中的气流的机械能转换为电能。该系统使用颤振能量转换装置（FECD），能够在低气流速度下工作，同时安装在建筑物内的通风管道上。利用电路系统实现的功率管理策略确保用于驱动商用电子设备的足够功率。例如，电源管理电路能够在小于3 m/s的通风管道气流速度下将1F超级电容器充电到2 V。
Wireless sensor networks (WSNs) have been widely used for intelligent building management applications. Typically, indoor environment parameters such as illumination, temperature, humidity and air quality are monitored and adjusted by an intelligent building management system. However, owing to the short life-span of the batteries used at the sensor nodes, the maintenance of such systems has been labor-intensive and time-consuming. This paper discusses a battery-less self-powering system that converts the mechanical energy from the airflow in ventilation ducts into electrical energy. The system uses a flutter energy conversion device (FECD) capable of working at low airflow speeds while installed on the ventilation ducts inside of buildings. A power management strategy implemented with a circuit system ensures sufficient power for driving commercial electronic devices. For instance, the power management circuit is capable of charging a 1 F super capacitor to 2 V under ventilation duct airflow speeds of less than 3 m/s.