The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, we proposed an energy-efficient clustering routing algorithm based on directional antennas (EECDA) for wireless sensor networks. In a large scene, a cluster-head is responsible for data acquisition within its cluster and data forwarding among different clusters. As the sensor nodes are too simple and the energy providing is limited, the energy will be quickly run out with the increase...
This paper proposes a new approach to save energy in a wireless sensor network (WSN) in which sensors lie on a uniform rectangular grid. At each data-acquisition/sampling instant, only a randomly selected subset of all the sensor nodes acquires and transmits the data. This problem can be solved by semi-definite programming, which is based on fixed point continuation with Bregman iterations.
This paper presents a flexible, efficient and lightweight Wireless Body Area Network (WBAN) Middleware. The Middleware is developed to bridge the communication between mobile device as a gateway and the sensor nodes, and therefore it shields the underlying sensor and OS/protocol stack away from the WBAN application layer. The middleware is coded in the form of lightweight dynamic link library, which...
Integrating mobility into WSNs can significantly reduce the energy consumption of sensor nodes. However, this may lead to unacceptable data collection latency at the same time. In our previous work, we alleviated the problem under the assumption of a mobile base station (BS). In this paper, we discuss how the problem can be solved when the BS itself is not capable of moving, but it can instead employ...
This paper introduces a sensor network testbed, X-sensor, that integrates multiple sensor networks deployed at different sites. X-sensor provides three functionalities: (a) a sensor network search which enables users to find a sensor networks appropriate for experiment and data acquisition, (b) a sensor data archive which provides users with various sensor data acquired by sensor nodes, and (c) an...
This paper introduces a new sensor network testbed, X-sensor, that integrates multiple sensor networks deployed at different sites. X-sensor provides three functionalities: (a) a sensor network search which enables users to find a sensor networks appropriate for experiment and data acquisition, (b) a sensor data archive which provides users with various sensor data acquired by sensor nodes, and (c)...
Wireless sensor networks(WSN) is a very active research topic which already has been used for environmental monitoring, public safety, medicine, and military. This paper introduces a practical type of WSN used for ground verification of remote sensing. This WSN mainly consists of sensor nodes, convergent nodes and data-processing terminals. Each sensor nodes has the capabilities to acquire data from...
Recent advance in robotics technology has led to an increasing interest in mobile sensor networks that are constructed by sensor nodes with a moving facility (mobile sensors). Until now, we have proposed an effective mobile sensor control method, named DATFM (Data Acquisition and Transmission with Fixed and Mobile Node), for sparse sensor networks. DATFM achieves the effective data acquisition in...
In some of the sensor network applications, low latency and reserved bandwidth to a particular device may have a significant importance. Guaranteed Time Slot (GTS) mechanism defined in IEEE 802.15.4 Standard provides solutions for such necessities. In this study, performance of GTS is measured on 13192 Evolution Kit modules from Freescale Semiconductor. This performance is compared with the theoretical...
Recent advances in wireless sensor networks have led to a collection of small sensor nodes capable of performing a monitoring function suitable for use in Driver Associate. An external sensor system is an organization of many sensor nodes working together to achieve a common goal. This sensor system has been integrated into the Driver Associate and is able to detect moving objects within a 15 foot...
We have proposed a new wireless transportation monitoring scheme based on wireless sensor network (WSN), namely wireless sensor transportation monitoring network (WSTMN), which differs from some old wired schemes greatly. As a novel information acquisition technology, WSN has many advantages that help to improve the performance of transportation monitoring system. We simulated WSTMN in NS2, in which...
The development of low-cost microsensor equipment having the capability of wireless communications has caused sensor network technology to attract the attention of many researchers and developers. In this paper, we propose a fully-distributed and self-organizing data gathering scheme for a network where a large number of sensor nodes are deployed. To accomplish the periodic data gathering without...
This paper introduces a centralized approach to data gathering and communication for wireless sensor networks. Inspired by the social behaviors of ants, we clearly partition the work for the base station and sensor nodes according to their different functions and capabilities. A near-optimal chain is achieved by using an ant colony optimization method ruing in the base station. The sensor nodes in...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.