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In our previous work, a simulation framework was proposed to focus on imitating the behavior of wireless charging vehicles (WCVs) and wireless sensor networks (WSNs) because current mainstream simulators have very limited support on simulation of WCVs. The WCV is an integration of a mobile vehicle and a wireless power transfer broadcaster, which is used to recharge sensors wirelessly to prolong the...
A Wireless Sensor Network (WSN) uses a larger number of low-power sensor nodes to gather environmental information which is then wirelessly forwarded to a base station. However, sensor nodes have very limited communication ranges. Thus, relay nodes are required to ensure reliable connectivity throughout the WSN. On the other hand, relay nodes are typically more sophisticated and expensive than sensor...
A Wireless Sensor Network (WSN) uses a large number of low-power sensor nodes and a base station to gather environmental information. However, the topology of WSN cannot always be fully connected owing to the limited communication range of sensor nodes. Therefore, relay nodes are used in the network to ensure reliable connectivity throughout the WSN topology. Since relay nodes are typically more expensive...
Sensor devices have been widely applied to variety applications, including internet of things (IoT), cyber physical systems (CPS) and environmental monitoring systems. Because all sensing data in such applications are very important for data analysis and mining in a host machine, sensor devices are equipped with non-volatile memory (NVM) [1] and nonvolatile processor [2], [3] to prevent sensing data...
A Wireless Sensor Network (WSN) is composed by a larger number of low-power sensor nodes to gather environmental information and forward those gathered information wirelessly to a base station. However, due to the limited communication range of sensor nodes, relay nodes need to be included in order to make the whole WSN connected. Relay nodes are typically more advanced and more expensive than sensor...
To resolve the lifetime issue of sensor networks, various solutions, such as mobile-node deployment, energy-efficient routing protocol, and low-power hardware design (e.g., micro processor, small size RAM), have been proposed in modern sensor networks. However, these solutions can only extend the lifetime of sensor networks but cannot achieve immortal sensor networks. Fortunately, an emerging technology...
Internet of Things (IoT) has become a popular issue in academic research. The technology of Wireless Sensing Network can fully implement the concept of IoT. A WSN uses less expensive sensors to automatically monitor environmental factors and to transmit sensing data. Therefore, the cost of manually collecting sensing data can be largely reduced. WSNs are often deployed to an outdoor environment where...
The lifetime of wireless sensor networks are constrained by its limited battery capacity. Therefore, the lifetime is widely regard as a bottleneck of technique of wireless sensor network. Recently, the emerging breakthrough in wireless power transfer technique is expected to eliminate the power constraint bottleneck. In this paper, we propose an intelligent wireless charging vehicle (IWCV) strategy...
For building the big data collection infrastruction, a vision-based smart meter reading network and its gateway is provided to a community gas supply system based on traditional mechanical meters. In the network architecture, the gas meter readings are captured by embedded image sensor nodes and then are transmitted to a gateway designed herein for reading image recognition and are collected in the...
How to reduce the sensor node power consumption in wireless sensor networks is one of the important research issues. Many routing protocols based on the directed diffusion have been proposed to improve the network performance. Most of them calculate the gradient relied on power-related information and hop count, but do not maintain the selected path. In this paper, we propose a new path switching...
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