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In view of low level of greenhouse automatic control system in China at present, this paper introduces a agriculture greenhouse environment monitoring system based on ZigBee technology, then gives the overall design of physical structure of system, network topology and its hardware and software designed of the composed modules. The PC software develop with Visual C++6.0 and SQL Server2000 that provides...
Currently in China the level of coal mine roadway roof abscission layer monitoring is low, especially in the most coal mine the transmission and observation of the underground separation data are by manual labor or by cable transmission, there is a high cost for coal mine. This paper introduces a roof abscission layer monitoring system based on ZigBee which is adapting to environment of coal mine...
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...
Wireless Sensor Networks(WSN) is a hot spot of the research of wireless networks currently, the key of achieving efficient transmission business is to control node energy and improve the network lifetime in wireless sensor networks. The paper first uses Boolean sensing model based on Poisson point process to identify the function of the rate of coverage and the node density in unit area, and then...
Recent Developments in sensor networking for industrial application emphasized need for reliable integration of sensor networks with the internet. For sensor network deployed to record the industrial process parameter in various place of industry, it is important that collected information be delivered as fast as possible with minimum delays. In this paper, an integration module is proposed. The objective...
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,...
Wireless Sensor Networks (WSNs) have attracted significant research interest in recent years because of their suitability to a wide range of real world applications. The envisioned Internet Protocol (IP) support for WSNs requires interoperability with existing management solutions, like Simple Network Management Protocol (SNMP), in order to provide remote management functionality and assure the correct...
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...
We are witnessing pervasive use of wireless sensor networks (WSN)s in a wide variety of applications such as monitoring of road infrastructure. As they are expected to be deployed in harsh environments for long durations, the research community have turned their attention to tapping on ambient energy to power such networks. However, since energy harvesting rates are still significantly lower than...
This paper describes a medical IT platform based on Wireless Sensor Networks and e-textile which supports indoor location-aware services as well as monitoring physiological parameters, such as ECG, heart rate, body temperature, etc., from a group of patients within hospital facilities. The paper presents the architecture, system deployment and validation results based on local test as well as on a...
This works illustrates the LAURA system, which performs localization, tracking and monitoring of patients hosted at nursing institutes by exploiting a wireless sensor network based on the IEEE 801.15.4 (Zigbee) standard. We focus on the indoor personal localization module, which leverages a method based on received signal strength measurements, together with a particle filter to perform tracking of...
In this paper indoor wireless Infrared (IR) technology for healthcare monitoring is studied. Monitoring provides a continuous and reliable vital sign measurement to secure patient staying in the hospital. Considering that patient moving is inevitable, we focus on a mobile IR channel based on diffuse propagation. A model of mobile channel is developed through the study of statistical distributions...
Due to the severe resource constraints of sensor hardware, energy efficiency is one of critical factors for monitoring the movement of the large-scale phenomena such as wild fire and hazardous bio-chemical material, denoted by continuous objects. In order to save energy, most of existing research on tracking the continuous objects focuses on finding the ways to minimize the communication cost through...
For the increasing demand on campus network, IPv6 (Internet protocol version 6) is going to replace the IPv4 protocol. IPv6 is playing an important role in many fields. Wireless sensor networks (WSNs) are undergoing rapid progress and attracted the attention of both the academic and the industrial research community in the last few years. This paper reports on the development of these protocols at...
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...
Currently, in the MAC protocol of wireless sensor network, the sender mote sends data with or without receiving acknowledgements (ACK). Although in some applications, people enable the ACK function, they just use the fixed repeat times. In such scenarios, the sender mote does not care about the quality of the channel when they have to send the data. However, in the real world, the channel may not...
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,...
Video is an important medium for the observation of a variety of phenomena in the physical world such as for water conservancy engineering. Video sensor networks (VSN) consists of a large number of sensor nodes with cheap CMOS cameras, therefore, it has the ability of large scale visual monitoring. However, a kind of powerful and scalable platform is urgent for simulation and development of VSN. This...
Progress in wireless communication has made possible the development of low cost wireless sensor networks. In recent years, as the development of wireless sensor networks, people have done some research on cluster-based protocol, about the proongation of the lifetime of WSN and decrease of energy consumed by the sensors. Clustering sensor nodes is an effective topology control approach, but these...
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...
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