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.
A comparison of single on-body links at microwave and millimetre wave bands is presented for medical application scenarios. Example body sensor positions (chest and abdomen) were selected. Two movement scenarios are investigated: Laying down still and randomly moving from a laying down position to a semi-reclined position, sitting up, or turning side-to-side. The measured cumulative distribution function...
This paper considers a large sensor network with its nodes taking measurements from certain distributions, while a small subset of the nodes draw anomalous measurements from distributions that differ from the majority. Since all the distributions are unknown a priori, the compressive anomaly detection (CAD) algorithm is proposed at the fusion center to identify the set of anomalous sensors and estimate...
The deployment of a sensor node to manage a group of sensors and collate their readings for system health monitoring is gaining popularity within the manufacturing industry. Such a sensor node is able to perform real-time configurations of the individual sensors that are attached to it. Sensors are capable of acquiring data at different sampling frequencies based on the sensing requirements. The different...
Wireless sensor networks are a new type of networked systems, characterized by severely constrained computational and energy resources, and an ad hoc operational environment. When wireless sensor networks are deployed in a hostile terrain, security becomes extremely important, as they are prone to different types of malicious attacks. Due to the inherent resource limitations of sensor nodes, existing...
Due to uncertainties in target motion and limited sensing regions of sensors, collaborative target tracking in wireless sensor networks (WSNs) suffers from low tracking accuracy and lack of reliability when a target cannot be detected by a scheduled sensor. Generally, actuating multiple sensors can achieve better tracking performance but with high energy consumption. Tracking accuracy, reliability,...
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 BT-MAC (balanced energy-latency tradeoff Media Access Control) which reaches a good balance between energy...
Energy efficiency has been known as the most significant problem in all facets of the wireless sensor network operations. For large scale WSN deployed in the battlefield it is necessary to consider energy depletion imbalance, extra overhead and delay brought by the increase of the hop number when designing energy-aware routing scheme. This paper presents a novel routing scheme (Cooperative Robust...
High dense dust and gas in the underground environment or in the long distance tunnel is harmful and dangerous to the workers and drivers. Based on wireless sensor network we use a hybrid monitoring system to realize real-time and unmanned guard monitoring and lowering the potential safety hazard. We analyze the energy efficiency of S-MAC, T-MAC and B-MAC. The simulation results show that B-MAC is...
It is widely known that in wireless sensor networks (WSN), energy efficiency is of utmost importance. WSN need to be energy efficient but also need to provide better performance, particularly latency. A common protocol design guideline has been to trade off some performance metrics such as throughput and delay for energy. This paper presents a novel MAC (Express Energy Efficient Media Access Control)...
Due to uncertainties in target motion and limited sensing regions of sensors, collaborative target tracking in wireless sensor networks (WSNs) suffers from low tracking accuracy and lack of reliability when a target cannot be detected by a scheduled sensor. Generally, actuating multiple sensors can achieve better tracking performance but with high energy consumption. Tracking accuracy, reliability,...
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...
To resolve real-time the traditional water quality detection method, a novel system of remote water quality measuring and monitoring based on wireless sensor network (WSN) and Code Division Multiple Access (CDMA) technology is proposed. The WSNs can monitor the targets and water quality information of the waters through the cooperation of a large amount of sensors. The optimization of node distribution...
Real-time monitoring of oil and gas production is a highly automatically management processing. Downhole permanent sensor network is an effective means for oil and gas reservoir dynamical monitoring, and it is one of the rapid developing technologies for oil and gas resource management in petroleum industry. In the paper a downhole permanent sensor network design is introduced, where the fiber Bragg...
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.