Abstract
Conventional wireless sensor networks (WSNs) in smart home-building (SHB) are typically driven by batteries, limiting their lifespan and the maximum number of deployable units. To satisfy the energy demand for the next generation of SHB which can interconnect WSNs to make the internet of smart home-building (IoSHB), this study introduces the design and implementation of a 250 mW to 2.3 W energy harvesting device. The proposed device is dynamically autonomous owing to the integration of embedded solar photovoltaic (PV) modules and power storage through a supercapacitor (SC; 5 V, 0.47 F) capable of powering WSNs for 95 s (up to 4.11 V). The deployed device can harvest indoor and outdoor ambient light at a minimum illumination of 50 lux and a maximum illumination of 200 lux. Moreover, the proposed system supports wireless fidelity (Wi-Fi) and Bluetooth Low Energy (BLE) to do data transfer to a webserver as a complete internet of things (IoT) device. A customized android dashboard is further developed for data monitoring on a smartphone. All in all, this self-powered WSN node can interface with the users of the SHBs for displaying ambient data, which demonstrates its promising applicability and stability.
Highlights
Smart home-building (SHB) equipped with wireless sensor networks (WSNs) have attracted greater public interest in recent times, attributing their ability to improve dwellers comfort cost-competitively
Many integrated WSN nodes and scalable internet appeals tend the traditional smart home-building (SHB) to function as the Internet of Smart HomeBuilding (IoSHB)
This glass type amorphous silicon solar module can of 252 μW power, which is insufficient to distribute to the wireless sensor node.generate
Summary
Smart home-building (SHB) equipped with wireless sensor networks (WSNs) have attracted greater public interest in recent times, attributing their ability to improve dwellers comfort cost-competitively. Micro-nano power electronic devices are being used on a large scale inside the SHB to increase the comfort of its inhabitants by enhancing convenience, saving electricity, delivering remote surveillance and real-time sensor data monitoring [2,3] This is implemented using WSN and IoT design, becoming more prevalent in our everyday lives [4,5]. Intelligent wireless interconnected sensing systems are required to complete all-new IoT technologies [8,9] In this context, WSN nodes perform the key role in low power consumption with longdistance communication considering the cost, size, and ease of setup and installation [10]. The long lifespan of energy harvesting and storage modules allows the IoT-based sensor node to be driven without thinking about battery replacement.
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