In energy constrained wireless sensor networks, it is very important to conserve energy and prolong network lifetime while ensuring proper operations of the network. In this paper, we investigate how to maximize the α-lifetime of wireless sensor networks, where α-lifetime is defined as the time duration during which at least α portion of the surveillance region is covered. We first present, giv...

Wireless sensor networks cannot have meaningful work without connecting with TCP/IP based network. In this paper, we analyze and compare all the existing solutions for connecting sensor networks with TCP/IP network, then based on the analysis result we present the basic design principle and key idea for connecting sensor networks with TCP/IP network. After comparing with related researches we c...

To level up the application of wireless sensor network in cotton field soil monitoring, wireless sensor network technology has been studied deeply. Some difficulties, including the design of soil moisture sensor, covering problem in wireless sensor network and diagnosis algorithm for wireless sensor networks and node, are been proposed and discussed. Combined with cotton field soil moisture mon...

Node placement is an important task in wireless sensor network. Node placement in wireless sensor network is a multi-objective combinatorial problem. A multi-objective evolutionary algorithm based framework has been proposed in this paper. Design parameters such as network density, connectivity and energy consumption have been taken into account for developing the framework. The framework optim...

Wireless sensor network security is the guarantee of the task execution confidentiality, data reliability, data fusion, and the security of data transmission. This paper analyzes security problems in wireless sensor network MAC protocol at present. The aim of topology control is through the transmission range control nodes to generate network topology satisfying certain properties, in order to ...

Recent year’s extensive research has been conducted on routing protocols for Wireless Sensor Network because of its numerous applications. A wireless sensor network is a collection of sensor nodes prearranged into a collective network to monitor the remote and physical environment. These sensors nodes are capable with limited processing and computing resources. The design of these routing proto...

The verification of aerospace structures, including full-scale fatigue and static test programs, is essential for structure strength design and evaluation. However, the current overall ground strength testing systems employ a large number of wires for communication among sensors and data acquisition facilities. The centralized data processing makes test programs lack efficiency and intelligence...

The Sensor Network consists of densely deployed sensor nodes. Energy optimization is one of the most important aspects of sensor application design. Data acquisition and aggregation techniques for processing data in-network should be energy efficient. Due to the cross-layer design, resource-limited and noisy nature of Wireless Sensor Networks(WSNs), it is challenging to study the performance of...

In the wireless sensor network we used hundreds of sensor node. If energy, range and hardware capabilities are different in various nodes in the network than these types of network are mainly known as heterogeneous network. It is noted that, to maintain a reliable information delivery, data aggregation and information security that is necessary for efficient and effective communication between ...

In order to achieve the sensing, communication and processing tasks of Wireless Sensor Networks, an energy-efficient routing protocol is required to manage the dissipated energy of the network and to minimalize the traffic and the overhead during the data transmission stages. Clustering is the most common technique to balance energy consumption amongst all sensor nodes throughout the network. I...