With the development of the social economy, more and more appliances have been presented in a house. It comes out a problem that how to manage and control these increasing various appliances efficiently and convenient...
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ISBN:
(纸本)9781467362498;9781467362481
With the development of the social economy, more and more appliances have been presented in a house. It comes out a problem that how to manage and control these increasing various appliances efficiently and conveniently so as to achieve more comfortable, security and healthy space at home. In this paper, a smart control system base on the technologies of internet of things has been proposed to solve the above problem. The smart home control system uses a smart central controller to set up a radio frequency 433 MHz wireless sensor and actuator network (WSAN). A series of control modules, such as switch modules, radio frequency control modules, have been developed in the WSAN to control directly all kinds of home appliances. Application servers, client computers, tablets or smart phones can communicate with the smart central controller through a wireless router via a Wi-Fi interface. Since it has WSAN as the lower control layer, a appliance can be added into or withdrawn from the control system very easily. The smart control system embraces the functions of appliance monitor, control and management, home security, energy statistics and analysis.
In the development of general system design approaches the main concern is whether the approach meets the proposed system's specifications and the ability of the system to operate for a specified period of time wi...
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In the development of general system design approaches the main concern is whether the approach meets the proposed system's specifications and the ability of the system to operate for a specified period of time within those specifications. However, with the expansion in the field of sensitive and complex systems, e.g. e-health monitoring systems, a great emphasis is put on the behaviour of the system with the presence of fault (i.e. fault-tolerance). There are numerous fault-tolerant mechanisms to enhance the reliability of a real-time critical system fault masking is one of the significant techniques amid those. It is one of the key approaches to improve or maintain the normal behaviour of a system in the appearance of fault. Voting as fault masking method aims to form a single output from a set of n input data, as prescribed by the requirements of a voting algorithm. In data fusion, voting is a probable method of combining different data delivered by several sources. These sources can be sensors, as in our e-health system, whose outputs may be mistaken. This paper aims to introduce a new hybrid history based voting algorithm for our proposed smart mobile e-health monitoring system. Our proposed algorithm gives better and stable performance, in the error range expected by our system.
In a hospital, information exchange is essential to save lives and to prevent life-endangering mistakes. information exchange is supported by a hospital information system (HIS). From a theoretical perspective, the de...
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Smart grid aims to enhance the efficiency, security and the reliability of electricity generation, delivery and consumption. Smart grid benefits from a variety of information and Communication Technologies (ICTs) for ...
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ISBN:
(纸本)9781467357531
Smart grid aims to enhance the efficiency, security and the reliability of electricity generation, delivery and consumption. Smart grid benefits from a variety of information and Communication Technologies (ICTs) for the betterment of the power grid. Two-way communications between the customers and the utility, advanced monitoring tools and intelligent control mechanisms are the key components to realize the new services of the smart grid. Particularly, energy monitoring tools at the customer premises as well as event and ambient monitoring tools at the substations, power lines and vaults play a significant role in managing and protecting the smart grid. Wireless sensor network (WSN) technology is a promising monitoring tool for residential premises and the smart grid assets. However, the large volume of data collected by billions of sensors requires a robust communication infrastructure to deliver data from the field to the operators in a timely manner. In this paper, we adopt the Fiber-WSN architecture to support both WSN data and Fiber To The Home/Building/Curb (FTTX) traffic. We design a Fi-WSN gateway that allows data prioritization, maintains the Quality of Service (QoS) of FTTX users and delivers WSN data in a reliable manner. Data prioritization is fundamental for design considerations since ambient data have lower priority than an alarm generated at a smart grid asset. Our gateway employs a burst assembly mechanism that allows differentiation between high and low priority packets in the Fiber-WSN architecture. We show that the proposed gateway design attains low delay for high priority packets while maintaining the delay of FTTX traffic and the reliability of the WSN at desired levels.
Tactical platforms benefit greatly from the fusion of tracks from multiple sources in terms of increased situation awareness. As a necessary precursor to this track fusion, track-to-track association, or correlation, ...
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ISBN:
(纸本)9780819495471
Tactical platforms benefit greatly from the fusion of tracks from multiple sources in terms of increased situation awareness. As a necessary precursor to this track fusion, track-to-track association, or correlation, must first be performed. The related measurement-to-track fusion problem has been well studied with multiple hypothesis tracking and multiple frame assignment methods showing the most success. The track-to-track problem differs from this one in that measurements themselves are not available but rather track state update reports from the measuring sensors. Multiple hypothesis, multiple frame correlation systems have previously been considered;however, their practical implementation under the constraints imposed by tactical platforms is daunting. The situation is further exacerbated by the inconvenient nature of reports from legacy sensor systems on bandwidth-limited communications networks. In this paper, consideration is given to the special difficulties encountered when attempting the correlation of tracks from legacy sensors on tactical aircraft. Those difficulties include the following: covariance information from reporting sensors is frequently absent or incomplete;system latencies can create temporal uncertainty in data;and computational processing is severely limited by hardware and architecture. Moreover, consideration is given to practical solutions for dealing with these problems in a multiple hypothesis correlator.
A Graph-based multi-hop cooperative MIMO transmission scheme (GM-MIMO) aimed at optimizing the network lifetime and saving energy for heterogeneous wireless sensornetworks (WSN) is proposed. In GM-MIMO, clusters are ...
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intelligent assessment of information gathered from industrial-grade data loggers for preemptive maintenance is one of the foremost areas of research in conditional monitoring. Due to the general operating environment...
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ISBN:
(纸本)9781467361293;9781467361286
intelligent assessment of information gathered from industrial-grade data loggers for preemptive maintenance is one of the foremost areas of research in conditional monitoring. Due to the general operating environment, there exists a non-linear relationship between the input and output data gathered from these sensors. Moreover, the transmission of data from such dynamic environments is generally marred by a large SNR with substantial level of " false-noise" belonging to the normal movement pattern of the mechanical parts. Within this context, the goal of this paper is to explore, evaluate and develop an optimal, dynamic neural network to improve the fault prediction accuracy of condition monitoring systems. The training data for this research was obtained from a vibration and a thermal sensor connected mounted over a polyphase induction motor. The objective was to identify any anomalies in the motor's fan-based cooling system. Moreover, the model presented a comparative analysis of a dynamic neural network (DNN) model against a non-linear autoregressive neural system (NARX) with exogenous input. The validation outcome presented a close regressive relationship of 0.9734 between observed and targeted outcomes over a 7-second delay with a NARX model giving a 4.56% and 5.23% classification accuracy. The best model system was evaluated against unseen anomaly data and demonstrated high prediction accuracy.
Video surveillance systems play an important role in many civilian and military applications, for the purposes of security and surveillance. Object detection is an important component in a video surveillance system, u...
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Video surveillance systems play an important role in many civilian and military applications, for the purposes of security and surveillance. Object detection is an important component in a video surveillance system, used to identify possible objects of interest and to generate data for tracking and analysis purposes. A video surveillance system is presented here which incorporates a novel motion detection approach using a biologically inspired vision system, within a hardware solution, for enhanced object tracking performance. This method is compared with a traditional object detection approach. This initial investigation determined that the biological vision system is robust in detecting objects representative of actual ground truth values under various complex lighting conditions. The system has shown enhanced capability by reducing false track confirmation rates (at least one order of magnitude) and achieving high confirmation rates of objects of interest within independent video data sets. An effective tracking solution has been achieved through the implementation of the biologically-inspired vision system as an enhancement to object detection.
Wireless sensornetworks (WSNs) consists of a large number of low-power, limited-processing and limited-storage sensors, which is applied for all kinds of areas. In the paper, we introduce an energy efficiency trusted...
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ISBN:
(纸本)9781479921423
Wireless sensornetworks (WSNs) consists of a large number of low-power, limited-processing and limited-storage sensors, which is applied for all kinds of areas. In the paper, we introduce an energy efficiency trusted dynamic routing protocol for wireless sensor network (EETDRP), which is designed based on Destination Sequenced Distance Vector Protocol and trusted management. And the wireless sensor network topology, architecture framework, design and simulation of the EETDRP are discussed in detail. The simulation test shows that the EETDRP is reliable and effective in case of some failure sensor nodes in wireless sensor network.
Physiological signals have certain prominent characteristics that distinguish them from other types of physiological signals which are familiar to experts and assessed by inspection. The aim of this paper is to develo...
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