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In this study, we can design data aggregation using the routing protocols, Data aggregation can reduce the cost of communication in the wireless sensor network. Heavy traffic occurs when the multiple sensor nodes has detect one or more events. To Save the energy, the network should notify the event properly, only when an event occurs. Overhead occurs in InFRA because its scalability is very low. In...
A multihop wireless sensor network carrying adaptive low bit-rate video stream is to be considered. Using a novel cross-layer adaptive prioritization algorithm, denoted by CLPA, a thorough analysis of the composition of the frames being carried or dropped over the network is to be conducted. The results show how the used prioritization scheme, which favors the basic frames over the enhancement frames,...
Energy consumption was and is an interesting issue that is stills a factor in the development of Wireless Sensor Network (WSN) especially in the physical and MAC layers; it is the primary metric to design a sensor node in wireless sensor network. The introduction of the Impulse Radio Ultra Wide Band (IR-UWB) Technology in the field of WSN was promising for researchers especially for its low power...
Artificial immune systems (AIS) utilize isolated mechanisms of the immune system to build specific algorithms. However, the immune system functions as a holistic system to protect the human body. In the same way, we propose to integrate independent AIS algorithms to build holistic AIS, namely unified artificial immune system (UAIS). It pushes AIS research to a higher level. We expect to see more powerful...
Cyber-physical systems (CPS) are high-integration systems which integrate computing, communication and physical process. CPS achieves the perception of external environment by means of all kinds of networks and wired/wireless sensors. Also, the system implements real-time control through feedback mechanism. The basic perception features and applications about CPS are described. The main purpose of...
Robots are an ideal tool for introducing programming to young generations. To be accessible to a large public, educational robots must be affordable and easy to use. In a previous work, the authors have developed Thymio II, an educational robot costing about 100 $. Thymio II is programmable using the ASEBA framework, which provides an interactive development experience through real-time compilation...
This paper considers current paradigms in computing and outlines the most important aspects concerning their reliability. The Fog computing paradigm as a non-trivial extension of the Cloud is considered and the reliability of the networks of smart devices are discussed. Combining the reliability requirements of grid and cloud paradigms with the reliability requirements of networks of sensor and actuators...
Sensor arrays have been used in a variety of sensing and communications applications. The spatial dimension can be utilized for user separation and improved reception through the placement of multiple antenna elements at the receiver and/or the transmitter and appropriate signaling when possible. Further, the ubiquity of wireless transmitters has provided the opportunity for location-based services,...
Wireless Sensor Networks (WSN) consist of small sensor nodes which operate until their energy reserve is depleted. These nodes are generally deployed to the environments where network lifespan is much longer than the lifetime of a node. Therefore, WSN are typically operated in a multiphase fashion, as in [1–3, 9–10], which use different key pools for nodes deployed at different generations. In multiphase...
A node self-localization algorithm based on Chaos-PSO is proposed for higher precision. It improves PSO algorithm, and introduces chaos theory characterized by its randomness and ergodicity to keep the output value out of the local extreme interval. The result of simulation shows that the performance of the new algorithm is better than PSO algorithm. Compared with least squares method which is widely...
In order to improve the level of experimental teaching of resistance strain sensor in higher vocational college, an experiment platform based on NI-WSN is reconstructed. First, the theory of wireless sensor networks is introduced. Second, the basic principle of resistance strain sensor is introduced. Then, the system structure is introduced. The resistance strain sensors and computer are connected...
In this paper, the system structure and Features of wireless sensor networks are introduced, visual Instrument and its advantages are introduced. A Wireless Sensing System Teaching Platform is constructed. It is a good platform and testing tools for sensor signals of real-time data acquisition, analysis, processing. This experiment platform can be used not only as a teaching experiment instrument,...
This paper introduce the design of monitoring and control system for wireless sensor network based on Modbus/Tcp and its implementation on Visual Studio 2005 platform. It communicates with gateway device and stores the data in MySql database. It also provides important work parameters history curve query function for wireless nodes and gateway which can be a reference for adjusting wireless sensor...
This work focuses on the properties of received signal strength indication (RSSI) of ZigBee wireless sensor network, which can be used to implement indoor location system. The study collects a set of measurement samples in a closed room from an implementation of indoor localization application based on ZigBee Cluster Library (ZCL) framework. The measurement data are analyzed for their statistical...
VoIP refers to communications services —voice and/or voice-messaging applications— that are transported via the Internet, rather than the public switched telephone network (PSTN). Rate of evolution of mobile services (such as data transfer service (GPRS, EDGE, 3G, and 4G LTE), audio & video player service, camera with higher resolution, GPS) is much higher than that of energy resources or energy...
Sensors are tiny devices and senses different types of inforamation. The sensing range of each sensor is limited due to its energy holding capability. Active participation of sensors in data transmission to base station minimizes the overall energy consumption and also reduces the overall systems cost. In this regard division of the total sensor field wiht uniform grids is the best solution. Leveling...
Preamble sampling (or low-power listening) is a low-power technique used in wireless networks to allow nodes to check for waiting traffic by periodically waking up from a low-power sleep state. An increasing number of proposals exist in literature to provide static and adaptive solutions to implement preamble sampling. This paper tackles the important question of what is the optimal preamble sampling...
ASWP testbed, a long-term wireless sensor network (WSN) deployment for environmental monitoring, is presented. This testbed integrates 42 MICAz nodes that implement a periodic sampling application for external sensors exposed to a forested nature reserve at the Audubon Society of Western Pennsylvania (ASWP), USA. It has been running for the past two years using TinyOS-based platforms and the commercially...
We propose a novel heuristic algorithm that performs geographical routing based on a greedy approach. Our proposed scheme first allocates the geographic locations of the source and the destination nodes influenced by their GPS information. A virtual Euclidean path is considered as a reference line to choose appropriate node for routing. Then, a multi-hop technique is adopted to establish routing path...
This deep space sensor network based on DTN is an important research in modern deep space communications technologies. Bundle layer plays a key role in the network. How Bundle layer can provide services for network more rationally and efficiently is an important influencing factor to improve and enhance the network performance. This paper proposes special network architecture for this DTN-based network...
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