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.
Automated vehicles are designed to take over all or part of the driver's task, in order to safely and comfortably navigate through road traffic. Automated vehicles, however, are limited by the line-ofsight characteristics of the on-board sensors, e.g., radar, lidar, and camera. To overcome this limitation, wireless inter-vehicle communication can be employed, which not only provides information of...
The Critical Heterogeneous Adaptive Threshold Sensitive Stable Election Protocol (CHATSEP) is a reactive protocol having three different energy values for sensor nodes. It incorporates a special adaptive feature of informing the observing base station about the status of the network if there is no transmission to the base station from a long time due to reactive nature of the network. It also includes...
Sustainability of old buildings is constantly challenged due to its non-compliance with energy saving practices. Old buildings which aim to deploy technologies to improve thermal comfort face some infrastructure constraints. The sustainability of such buildings is dependent on occupant's thermal comfort, low carbon emissions and reduced energy consumption. Such buildings face restraints in the way...
Based on the characteristics of DV-Distance, an improved algorithm for wireless sensor networks is proposed. The main principle of the improved algorithm is introducing of the straight line/polyline ratio of and the hops between the anchors, reducing the cumulated distance error and location precision error. The simulation results show that the improved algorithm increased the location precision.
Wireless Sensor Networks (WSN) have attracted considerable research effort in the community during the past couple of years. One of the most challenging issues so far is the extension of network lifetime with regards to small battery capacity and self-sustained operation. Endeavors to save energy have been made on various frontiers, ranging from hardware improvements over medium access and routing...
Reliability is a key issue in wireless sensor networks. Depending on the targeted application, reliability is achieved by establishing and maintaining a certain number of network functionalities: the greatest among those is certainly the capability of nodes to communicate. Sensors communications are sensible to interference that might corrupt packets transmission and even preclude the process of network...
Due to the limited functionalities of sensors and the unreliable wireless environment, traditional routing and relay strategies proposed for mobile ad hoc networks are not directly applicable to wireless sensor networks. In this paper, we present a multipath searching scheme by using a power-based parallel routing method suitable for wireless sensor networks. This work constructs noncoherent unitary...
Conveyor systems are critical in automation applications such as material handling and packaging. Networked embedded devices, such as tiny microcontrollers that are integrated with sensors, actuators and low power radio transceivers, significantly impact the design of future such systems by offering flexible topologies, reduced wiring costs and distributed controllers. Because the application domains...
When we consider the limited power of wireless sensors, it is necessary to reduce the dimension of data conveyed between sensors, because high dimensional data transmission requires much power consumption of sensors. For data reduction in a network, in-network data aggregation methods and collaborative compression methods were reported. However, the in-network data aggregation methods typically lead...
This papers proposes a novel climate control strategy for mine extraction rooms based on the receding horizon optimal control scheme. Being a model-based procedure, the development of a pertinent prediction model is one of the keystones. According to recent technological advances, we consider that distributed measurements are available and provided by a wireless network. An enhanced modeling approach,...
The seamless combining with context-aware sensors and numerous devices and e-home server will soon become a part of our home environment in the near future. We name it as a context-aware home based on ubiquitous computing concept. This context-aware home reduces participations of users in order to realize a ubiquitous computing and automates various services. Therefore, the risk of privacy violation...
Over the last years, wireless multihop ad hoc networks have received a tremendous interest from research groups. The major focal point has been the routing protocols, i.e. how to select the best route to send information from any source to any destination. Each node in an ad hoc network may work as a router to relay connections or data packets to their destination. The key issues of ad hoc networking...
This article focuses on the development of an integrated system for mobile robot odometry relying on an existing wireless transceiver infrastructure. The robot concurrently emits RF and ultrasound signals which are captured by the wireless sensor nodes. These nodes compute their distance from the robot and transmit back to the robot this information. The robot computes its location based on these...
Position and orientation estimation is one of the main problem in mobile robotics: to navigate and accomplish its job a mobile robot must know where is it. To this sake, we suppose that a set of wireless sensors are located on the operation field, which can measure distance and orientation of the robot, and are connected with the estimator by a wireless network. An extended Kalman filter has been...
The paper deals with mobile sensor networks and the related problem of area coverage. A distributed solution to the motion planning of the moving sensors for dynamic area coverage is given and compared to a global one. The distributed approach, despite its lower performances w.r.t. the global one, shows several advantages, from reduced computational costs to lighter communication traffic and then...
The domain of wireless sensor networks (WSNs) is one of the most rapidly growing scientific fields. This is because not only the technological advances have enabled the development of advanced sensor nodes with extremely low cost but the potential applications of such structures are ever growing too. WSNs differ from traditional wireless communication networks in several of their characteristics....
The intra-logistics is constantly subject to technological developments and changes. In the field of warehousing in former times, articles were identified over bar code. Nowadays with the growing requirements for mobility and reliability increasingly radio technologies are employed to request information. Wireless sensor networks simplify the stock accounting through a decentralization of the data...
For application researches of the detection for the gas signal source, a method for orientation estimation of the gas signal source in the two-dimensional space and its algorithm are presented in the paper. In the method, a mode of dual-line gas sensor array is applied to sample the signals of the gas concentration in real time, and the time delay estimation, an approach of the signal processing,...
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.