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Monitoring the progress or deterioration of the elder's life activities is vital for a medical assistant or care helper to provide an early alert when an unusual activity may be happening in other days. In this study, we have considered a technique for monitoring and identifying abnormal behavior of health data collected from a smart home to help an elderly person to live safely in his/her home longer...
This paper presented an implementation of indoor environmental data collection with the localization module. Since where the environmental data is collected can be known, the distribution of the environmental data in an indoor environment would be presented. The small and light weight sensors are employed here and equipped on a mobile platform such that the mobile platform can freely cruise in the...
Currently, the limitation of battery has become a serious obstacle for the development of Internet of things (IoTs). Therefore, a new network architecture, named as battery-free network, were proposed. In a typical battery-free network, the battery-free nodes are equipped with any battery and can only gain energy from the environment. Such network extremely expands the scope of the IoT applications,...
Wireless Power Transfer (WPT) technology has witnessed huge development because of its convenience and reliability. This paper concerns the fundamental issue of wireless charger PLacement with Optimized charging uTility (PLOT), that is, given a fixed number of chargers and a set of points on the plane, determining the positions and orientations of chargers such that the overall expected charging utility...
Data aggregation is an essential operation for the sink to obtain summary information in a Wireless Sensor Network (WSN). The problem of Minimum Latency Aggregation Schedule (MLAS) which seeks a fastest and collision-free aggregation schedule has been well studied when nodes are always awake. However, in duty-cycle WSNs, nodes can only receive data in active state. In such networks, it is of great...
On the basis of a mathematical apparatus of the mixed Markov processes for discrete time optimum and quasioptimum adaptive algorithms of filtration of parameters of the UAV movement on data from its location calculated on the basis the time difference of arrival method are synthesized. Devices that they are realized, are multichannel and belongs to the class of devices with feedback between channels...
The paper presents an enhanced special module system for correcting codes based on Residue Number System. The research of algorithms hardware and time complexity for error detection and correction has been conducted on the basis of the Residue Number System correcting codes, using the proposed module system. Implementation of error detection and correction devices on the Field-Programmable Gate Array,...
The Magnetic Induction (MI)-based communication techniques enable the applications of wireless sensor networks (WSNs) in complex environments, such as underground and underwater environments. However, the complex environments usually consist of many conductive objects that can significantly enhance or block the MI signals. Efficient communications can be achieved if we can smartly utilize the positive...
This paper presents the deployment of a working Wireless Underground Sensor Network (WUSN) on a university campus using existing wireless networking technology at 902 MHz. This is the first full system of its kind that is operational over a long time, with the data being gathered available in real time on an open website. Design details of the WUSN are described, including the network architecture,...
Wireless devices such as sensors have increasingly more processing, storage, and networking capabilities, making wireless sensor networks (WSNs) get lots of attentions in recent years. In addition, the cost of sensors is constantly decreasing making it possible to use large quantities of these sensors in a wide variety of important applications in environmental, military, commercial, health care,...
In this poster, we consider software-defined wireless sensor networks (SDWSNs) and present a lightweight flow management to reconfigure flow entries in flow-table when link fault occurs in the data plane of SDWSNs.
Wireless sensor networks are responsible for sensing, gathering and processing the information of the objects in the network coverage area. Basic data fusion technology generally does not provide data privacy protection mechanism, and the privacy protection mechanism in health care, military reconnaissance, smart home and other areas of the application is usually indispensable. In this paper, we consider...
The k-nearest neighbor (KNN) based indoor localization methods are practical to the wireless sensor network constructed by internet of things. The weighted KNN (WKNN) method is designed as the enhanced KNN but actually does not outperform KNN. Inspired by the technique of differential coordinates from satellite-based localization, in this paper we propose the differential coordinate based WKNN (DC-WKNN)...
Using the mobile robot to carry static sensors and deploy sensors at proper positions is an efficient method to solve the sensor deployment problem in wireless sensor networks (WSNs). In this paper, we assume a more practical environment compared to most studies of this problem. The goal of the proposed algorithm is to plan a shorter traveling path for the robot to relocate the redundant sensors in...
Lately Video Sensor Networks (VSN) are increasingly being used in the context of smart cities, smart homes, for environment monitoring, surveillance, etc. In such systems, due to limitations in the video sensor node resources, the most important factor is energy efficiency. Sensing, processing and transmitting are the main contributors to energy consumption in a video sensor node. Among these, wireless...
The Routing applications are popular in Wireless Sensor Networks (WSNs). For a practical monitoring environment, the monitoring events may be varied, and so do the data sinks. Most of known applications deal with the monitoring without varied data. The varied event and different sinks are regarded as different monitoring systems. We propose a distributed mechanism to arrange the routing for transmitting...
This paper develops the study about parking spaces detection in indoor environments, implementing a wireless sensor networks (WSNs) based on Zigbee technology. With the popularity of digital communications technology, there are many people engaged in wireless sensor network applications. Indoor positioning technology is very important area among wireless sensor network applications. In this paper,...
In this paper, we study the problem of data gathering in ad-hoc sensor networks using a mobile entity called mule. The mule traverses the children of failed sensors, to prevent loss of data. Our objective is to define the optimal communication tree and the mule's placement such that the mule's overall traveling distance is minimized. We explore this problem in several network topologies including:...
This paper aims to reduce improper disposal of waste. The system exploits the technical need for Wi-Fi by the general population. The idea is to inspire people to properly dispose of waste. Here the trash bin acts like Wi-Fi hotspot. Once the user puts waste of certain quantity and enters his/her mobile number, the system sends him a SMS containing a OTP to access the Wi-Fi. This can help us to reduce...
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...
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