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The paper will develop a wireless sensor network suitable for the medical scene of smart community for the elderly in the community to provide quality health care services for the elderly. The project will improve positioning accuracy of the elderly in the smart community through the study of positioning algorithm. Meanwhile, the project will design a routing protocol most appropriate for medical...
Recent studies have shown that environmental energy harvesting technologies have the potential to provide perpetual operation to wireless sensor networks. However, due to the large variations of the ambient energy source, such networks could only support low-rate data services and the performance is affected by many unpredictable environmental factors. To deliver energy to sensor nodes reliably, in...
A wireless sensor network (WSN) is a set of nodes communicating through wireless links to observe a given phenomenon. Once sensors are deployed they are considered autonomous. Their lifetime is limited by the lifetime of their batteries. Currently the mobility of sensor nodes poses the new challenges. Given the constraints of mobility and energy consumption, WSNs require the implementation of new...
An optimization model is set up for the area covering and routing problem of Wireless Sensor Network(WSN). Two quasi-physical and quasi-sociological methods are designed for the problem, They are quasi-gravitation model and quasi-coulomb force model. Based on the Area Covering, Round Routing Method is proposed, which transfers into TSP problem. Restriction of window ant colony algorithm carry out...
In some environment, randomly deployed sensor nodes could not satisfy the requirements of wireless sensor network. Therefore, it is necessary to use mobile sensor nodes in some special conditions. And after moving nodes are deployed randomly, they could be relocated according to the real-time situation of network coverage degree. This paper proposes a hexagonal grid-based sensor deployment algorithm,...
In this paper we show the results of an experimental assessment of an indoor localization system based on a Wireless Sensor Network. The estimated position of a target node embedded in the monitored environment is obtained by running of the Relative Span Exponentially Weighted Localization (REWL) algorithm, a novel localization procedure recently proposed in the literature. The inputs of the algorithm...
Wireless sensor network is a new information acquisition and processing technology, which is widely used in monitoring systems. Taking into account that the physical topology of the mine is relatively fixed, as well as that the energy can be added to the mobile nodes, in this paper we propose an energy-efficient wireless sensor network routing algorithm to adapt to the mine environment. Demonstrated...
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