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Home Automation Systems have been continuously evolving in the past few years: some of the systems are focusing their attention on providing remote access and control of the system, while others are more focused on the interconnectivity of the devices and on integrating them into greater systems, like smart cities. In this paper we propose a hierarchical architecture for Home Automation Systems, which...
Location-awareness plays an important role in Wireless Sensor Networks (WSNs) by aiding in tasks such as packet routing, event mapping, and energy savings. The use of Global Positioning System (GPS) on sensor nodes is not always viable due to a number of issues, e.g., power constraints. Location estimation solves the problem of computing sensor node positions by using information from devices that...
Adaptability and energy-efficient sensing are essential properties to sustain the easy deployment and lifetime of WSNs. These properties assume a stronger role in autonomous sensing environments where the application objectives or the parameters under measurement vary, and human intervention is not viable. In this context, this paper proposes LiteSense, a self-adaptive sampling scheme for WSNs, which...
In wireless hostile environments such as tunnels, tall buildings, undergrounds and dense vegetation where Global Positioning System (GPS) signals can be unavailable, vehicles are prevented from exchanging accurate positions. Hence critical information may be lost or misled. To overcome these limitations, this paper proposes an innovative technique for localization estimation called SuPRANO, a Semi-suPervised...
Due to the fast boom of security threats in wireless sensor networks (WSNs) sensitive applications, we propose a game-theoretic protection approach for sensor nodes in a clustered WSN based on a repeated game. The proposed game model is developed for detecting malicious sensor nodes that drop the high priority packets (HPPs) aiming at maximizing the high priority data trustworthiness (HPT). Simulation...
Underwater sensor networks are bounded by data sensing, transmitting, and forwarding limitations. The transmitting of large volumes of data can require a large amount of time and power. This has led researchers to focus on the new technology of underwater computing systems, in which information is extracted under the water using embedded processors via data mining and/or data compression. In this...
A belt region is said to be k-barrier covered by a set of sensors if all paths crossing the width of the belt region intersect the sensing regions of at least k sensors. Barrier coverage can be achieved from a random initial deployment of mobile sensors by suitably relocating the sensors to form a barrier. Reducing the movement of the sensors is important in such scenarios due to the energy constraints...
This paper presents a smart badge system for managing museum visitors and improving their viewing experience. The badge uses a LoRa wireless interface for two-way long-distance communication with tour guides and the museum’s control center. The control center can collect information such as the visitors’ viewing preferences, location, and status of activity level, enabling it to wirelessly send suggestions...
Aiming at the defects of traditional manual operation and wiring of the traditional lighting system, this paper puts forward a design scheme of LED lighting control system based on ZigBee wireless sensor network technology. With the change of the environment parameters and the preset lighting mode, the system can respond quickly and automatically, and realize the PWM linear non-polar dimming. Based...
Science and technology are progressing with the speed which seems to be unfamiliar to us. What seems to be science-fiction some 30 years ago is now becoming our everyday reality. 3-D printing, O-led technology, modern communication, smart materials, mind recognition etc. How to follow the progress and all novelties and what is more, how to integrate them into the educational systems of high schools...
In this paper a data acquisition system based on wireless sensor networks to support the biomechanical gait analysis will be presented. The system is composed by sensor nodes that can be fasten to the limbs of a person. Each node contains the ESP8266 platform connected to a MPU6050 module that includes a gyroscope and an accelerometer. The system starts working in a self-adjusting (auto calibration)...
The problem of searching for hidden or lost objects (called targets) by autonomous smart robots in an unknown environment arises in many applications, e.g., searching for and rescuing lost people during incidents in high-rise buildings, searching for fire sources and hazardous materials, searching for safe paths through the rubble during an emergency evacuation etc. Until the target is found, it may...
Devices running on Wireless Sensor Networks (WSNs) generally have limited energy resources, which makes it important to design energy-aware algorithms. Capacitated Minimum Spanning Tree (CMST) algorithms can be designed for finding energy-aware routing paths and for load-balancing among sub-trees connected to the sink device. Despite being studied extensively in central settings, there has not been...
Cluster structure is one of the most important structures that have received increasing attention over recent years. This paper presents a modification to the structure of the cluster tree Wireless Sensor Network (WSN) dividing clusters into sub-groups. Each group of these sub-groups operates like a tree from a small number of nodes. The results from the implemented adjustments indicate a significant...
One of the crucial challenges in the recently emerging Internet of Things (IoT) applications is how to handle the massive heterogeneous data generated from a large number of resource-constrained sensors. In this context, cloud computing has emerged as a promising paradigm due to its enormous storage and computing capabilities, thus leading to the IoT-Cloud convergence. In such a framework, IoT devices...
A key aspect for full deployment of a WSN is power consumption and the corresponding power supply. Conventional solutions are based on connectivity to the power supply network. Alternatively, usage of batteries was found feasible for some limited set of possible usage. In order to have wider acceptance, the power supply lifetime of WSN should be matching to that of sensor node lifetime. In terms of...
Idea is a valuable asset as a result of creativity. But, many ideas have gone from mere imagination did not materialize. We propose a testbed platform concept that is easily available in order not to miss the various ideas emerging in the Internet of Things environment. An easily express your ideas, can be used to access anytime, anywhere, and many of users can share a testbed and hybrid of the simulation...
Numerous researches have been done in various aspects of Wireless Sensor Networks (WSN) in different applications such as communication, network formulation, localization, power management, etc. Our researches are mainly focusing on wireless localization problem. In this paper, we perform an experiment of indoor multi-hop wireless localization under ultra wide-band communication channel for testing...
Wireless sensor network will become isolated in various associated segments because of the disappointment of some of its hubs, which is known as a “cut”. In this paper, authors acknowledge the issue of distinguishing cuts by the remaining hubs of a wireless sensor network. System proposes an estimation which grants every hub to identify at the time of accessibility to an extremely assigned hub has...
Congestion control is an important mechanism in wireless sensor networks (WSNs). In this paper, we discuss congestion control and the traffic-aware problem for sensor nodes in WSNs. Congestion may cause serious problems such as packet loss, the consumption of power, and low network throughput for sensor nodes. Hence, we propose a distributed congestion control protocol called traffic-aware congestion...
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