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Industrial Wireless Sensor Networks (IWSNs) consist of a central manager, gateways and field devices with sensing, signal processing and wireless communication capabilities. Convergecast is a many-to-one industrial communication paradigm which is used for process measurement and control applications. Convergecast scheduling in IWSNs is to determine the smallest length conflict-free assignment of timeslots...
In order to resolve the problems of reducing the data transmission and prolonging the network lifetime of the wireless sensor network (WSN) in the case of the nodes deployed randomly, this paper puts forward a cluster compressive data gathering (CCDG) method based on pretreatment. The method can be realized through the following two steps: Firstly, the original sensor readings received from all nodes...
Considering the characteristics of ERA based wireless sensor networks architecture and the specific demand of tropical agriculture, this paper proposes a scheme which can be used in high temperature, multiple rain and so on, design and implementation wireless sensor network system of tropical agriculture. ERA is a new type of embedded architecture with the use of reconfigurable architecture, and the...
Wireless sensor network (WSN) applied on bridge health monitoring has attracted considerable attention for its advantages such as self-organization, micro-structure, low cost and high flexibility. The performances of WSNs are extremely correlated with application scenarios and even the same protocol may results in an obvious performance difference on various applications. However, no one has studied...
A wireless sensor network is composed of randomly dispersed nodes capable of collecting and transmitting physical data to a central node. Communication protocols are responsible for maintaining the routs in the network as well as for ensuring reliable inter-node communication. The main focus of this work is to analyze the performance of both reactive routing protocols mainly Ad hoc On Demand Distance...
Due to the limitation of the energy, the performances and applications were constrained of the pure batteries powered wireless sensor networks (WSNs). WSNs with energy harvesting extracting energy from the surrounding environment, supplement energy to the sensor nodes, can be significant prolong the lifespan of WSNs, or even make WSNs running for perpetual. In order to determine the node energy harvesting...
Self-organizing desynchronization in wireless sensor networks leads to near-optimal time-division multiple access (TDMA) behavior in the network's steady-state, without requiring a coordinator node. In order to increase bandwidth utilization, desynchronization can be extended to multi-channel MAC protocols. In this paper, we proposed a new protocol for the medium access control layer of IEEE 802.15...
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