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This paper mainly studies the application of synchronous lifting technology in the bridge lifting. The wireless sensor network is installed in the bridge to serve as low-cost alternatives to commercially available cable-based measuring and monitoring systems. Due to the unavoidable sensing noises and the uncertain perturbations in the hydraulic systems, Kalman filter is adopted to reduce the measuring...
With the construction of economic and ecological zone around Poyang lake, aquatic vegetation monitoring plays an important role in promoting economic and ecological zone construction. Research on aquatic vegetation monitoring technology based on wireless sensor network (WSN) is a novel topic. However, this method is able to solve the propagation delay, floating node mobility, and high error probability,...
Although many studies proved that it was possible to embed application servers on a chip with limited resources, security considerations were generally marginalized. Due to their frontal position, application servers are subject to an increasing number of threats. These vulnerabilities are actually ignored in most cases mainly because of cost constraints. This paper introduces the concept of Secure...
Sensor node localization is a basic and key problem in sensor network work and management, and the self-localization of the sensor node is the basis for sensor network applications. This paper classifies and compares with several localization algorithms currently used, presents a node localization algorithm based on mobile anchor node, to reduce the communications and computing cost of the wireless...
Along with the infiltration of wireless sensor network in every field of our life, sharing sensor network resources in Internet environment is one of key problems which must be solved by wireless sensor network application. This paper expounds Web Service technology and uses Web Service technical framework for reference to design a new kind of service-oriented sensor network structure. And finally,...
Despite many of the same properties between standard median filter (SM) and Pseudo-median filter (PM), SM can remove impulses completely but PM not. However, PM can be more efficiently calculated which is very important for processing data online in WSN. In order to synthesize the advantages of performance of PM and SM, an improved method combined the advances of PM and SM is proposed in this paper...
In this paper, we briefly describe the wireless sensor network(WSN), and highlight the design of RF antenna with a gain based on nRF905 chip, then complete an intelligent greenhouse monitoring system for agricultural greenhouse temperature based on WSNs. Finally, we confirm the feasibility of the system design through some tests.
A intelligent monitor and control system on multi-factor of aquaculture environment based on wireless sensor networks is designed adopting BP neural networks. The system uses wireless sensor nodes to detect a variety of water quality parameters transmitted to the on-site monitoring host computer through sink node wirelessly. The control module consists of fuzzy controller and decoupling neural network...
In wireless sensor network studies the main objective is minimizing the energy consumption so that the lifetime is maximized under the limited battery capacity constraints. In most event-driven surveillance applications, the end-to-end delay should also be minimized. In this paper we present a new EDO-MAC (energy and delay optimization Media Access Control) which reaches a good balance between energy...
Wireless sensor networks are an important research area that has attracted a lot of attention in the past few years. Most of this attention, however, has focused on wireless sensor network collect scalar data such as temperature and vibration. Scalar data is insufficient for many applications such as video surveillance and traffic monitoring. Whereas, camera sensors collect video data, which are rich...
Based on the concept of hybrid shift-invariant spaces, we develop a distributed protocol for the reconstruction of time-varying physical fields in wireless sensor networks. The localized nature of these spaces allows for a clustered network architecture that leads to low communication overhead. Capitalizing on the sparsity of the reconstruction matrix, we propose an iterative reconstruction algorithm...
In a wireless sensor network (WSN), the sensors closest to the sink tend to deplete their energies faster than the other sensors, which is known as an energy hole around the sink. To avoid this, a new scheme for placing nodes, via adjusting surface densities and initial energies in each ring in a ring model, is proposed in this paper. A new definition of network efficiency, including the consideration...
Wireless sensor networks are becoming more and more popular; however, with the advent of smart dust the security for wireless sensor networks is still a trouble. Resolving security for wireless sensor networks, an important problem is key distribution. In this paper, we show how the key distribution problem can be dealt with in environment and we make full use of asymmetric cryptographic technique...
How to minimize the network redundancy and prolong network life are important problems while designing a coordinated multi-sensors coverage system. By adopting stochastic sensing model for each sensor node, this paper founds an optimization model for coordinated multi-sensors coverage problem. Then an improved genetic algorithm based on parallelism selection is presented. The simulation results show...
Gas cylinders are used in many different situations, such as in research, in industry, in healthcare, and even in the home. Due to demand in such a wide variety of circumstances, there is the inevitable ambition of gas suppliers to improve the efficiency of their business. To this end, a tracking system is proposed in this paper in order to provide such improved efficiency whilst also integrating...
For the importance of monitoring system in mine, this paper describes the application of wireless sensor networks for mine safety monitoring. Schemes for clustering and mobile node based on the characteristics of mine wireless sensor networks are proposed in roadway. The simulation results show that the clustering and mobile node schemes achieved in this paper can meet the requirements of mine, and...
K-coverage is a classic issue in wireless sensor network (WSN) deployment. Existing works typically assumes that every position in the monitoring field is covered by at least k sensor nodes at any given time. This may not always be necessary because certain events to be monitored will last only for a short period of time. Based upon such observation, we include the time dimension in the original k-coverage...
In this paper we present the impediments in designing and implementing a wireless sensor network based smart home for monitoring the elderly and to propose an optimal solution to circumvent the impediments. The smart home is based on a few smart and intelligent wireless sensors, which can be configured around a wireless ad-hoc network. The system will generate early warning message to care giver,...
This paper presents prototypes of wireless sensor nodes and network system for monitoring the power consumption of information and communication devices. Nowadays, carbon dioxide (CO2) emission in the information and communication technology (ICT) field is increasing enormously due to the high electric power consumption in ICT devices, e.g., in Internet data centers (IDC) as well as offices and homes...
As the complexity of systems is rapidly growing, the designers are moving towards use system level design Languages (SLDL) such as SystemC and SpecC. In this paper we use SystemC and SpecC languages for modeling and simulation of wireless sensor networks (WSN). First we start on simple ECO model and add modular sections as increases as the complexity. In the next step, we add data encryption using...
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