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检索条件"任意字段=2nd IEEE Sensor Array and Multichannel Signal Processing Workshop"

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Development of low power technologies for health monitoring system using wireless sensor nodes

Development of low power technologies for health monitoring ...

引用

2012 2nd workshop on Design, Control and Software Implementation for Distributed MEMS, dMEMS 2012

作者： Okada, H. Nogami, H. Itoh, T. Masuda, T. Ubiquitous MEMS and Micro Engineering Research Center National Institute of Advanced Industrial Science and Technology Tsukuba Japan Dept. of Precision Engineering University of Tokyo Tokyo Japan

ISBN: (纸本)9780769546797

We have developed low power technologies for animal or human health monitoring system with wireless sensor node. A wireless sensor network system is composed of sensors, signal processing units, receiver and other components. Although there are several reports of low power technologies for these components separately, the technology which has consideration of a total system has not been researched. For example, if we use the combination of a wireless sensor node and a receiver, the number of receiving per a time can be utilized as measured data indirectly. In this case, since the transmitted data can be decreased, the power consumption of the transmission can also be decreased. In this paper, we report low power technologies of wireless sensor network system which was developed for chicken health monitoring system. The calculated average power consumption of the wireless sensor node is less than 1 μW. © 2012 ieee.

关键词： Electric power utilization

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A performance evaluation of intrusion-tolerant routing in wireless sensor networks

A performance evaluation of intrusion-tolerant routing in wi...

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2nd International workshop on Information processing in sensor Networks

作者： Deng, J Han, R Mishra, S Univ Colorado Dept Comp Sci Boulder CO 80309 USA

ISBN: (纸本)3540021116

This paper evaluates the performance of INSENS, an INtrusion-tolerant routing protocol for wireless sensor Networks. Security in sensor networks is important in battlefield monitoring and home security applications to prevent intruders from eavesdropping, from tampering with sensor data, and from launching denial-of-service (DOS) attacks against the entire network. The resilience of INSENS's multipath performance against various forms of communication-based attacks by intruders is evaluated in simulation. Within the context of INSENS, the paper evaluates implementations on the motes of the RC5 and AES encryption standards, an RC5-based scheme to generate message authentication codes (MACs), and an RC5-based generation of one-way sequence numbers.

关键词： Wireless sensor networks

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Space-time compressive sampling array

Space-time compressive sampling array

引用

sensor array and multichannel signal processing workshop

作者： Ying Wang Geert Leus Philips Research Europe Eindhoven Netherlands Department of EEMCS Delft University of Technnology Netherlands

We propose a space-time compressive sampling (STCS) array architecture by exploiting the sparsity in the angle and frequency domain. Two Doppler-DoA estimation methods are designed to efficiently reconstruct the two-dimensional (2D) sparse signal. The STCS array together with the 2D reconstruction methods allow for accurate yet low-power location and speed estimation of moving targets. The proposed methods are not only tested by simulations but also using an experimental ultrasonic sensor array setup.

关键词： arrays Estimation Baseband Frequency estimation Sparse matrices Receivers Doppler effect

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Design of Remote Monitoring System for Complex workshop

Design of Remote Monitoring System for Complex Workshop

引用

2nd International Symposium on Test Automation and Instrumentation

作者： Wu Xinyi Xue Wendong Huang Wensen Hong Yongqiang Xiamen Univ Dept Mech & Elect Engn Xiamen 361005 Fujian Peoples R China

ISBN: (纸本)9787506292207

Taking the complementary advantages of the analogue video processing technology, ZigBee wireless communication technology and embedded Web server for information collection and transmission, the workshop remote monitoring system is designed, to realize a large-scale, low-power, high-efficiency multi-signal remote supervision. The system hardware platform mainly consists of Video QUAD/MUX Controller TW2834, MPEG Encoder Go7007, 16/32-bit RISC microprocessor S3C2440, ieee 802.15.4 RF chips and other units. Combining with Linux OS, ZigBee Protocol Stack, BOA Webserver and Flash Server Red5, the system realizes the functions of multi-channel analogue video process and shows, ZigBee star topology wireless sensor network and Browser/Server remote information interaction.

关键词： ZigBee red5 wireless sensor networks browser/server

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Delay constrained linear transmission of random state measurements

Delay constrained linear transmission of random state measur...

引用

sensor array and multichannel signal processing workshop

作者： Onur Tan Deniz Gündüz Jesús Gómez Vilardebó Centre Tecnològic de Telecomunicacions de Catalunya (CTTC) Barcelona Spain Department of Electrical and Electronic Engineering Imperial College London London UK

Linear transmission of state measurements is studied, where the control center (CC) sends random state measurement requests to multiple sensors. Each sensor is capable of measuring multiple system parameters, and the CC asks for a particular system parameter from each sensor at each time slot. Delay constrained linear transmission of these measurements over orthogonal fading channels is considered. The total meansquare error (MSE) distortion is studied for Gaussian states and channels under an average power constraint. For a particular symmetric scenario, a round-robin scheduling algorithm and optimal linear transmission (LT) scheme are presented. It is shown that, as opposed to the case of a single parameter measurement, the performance of the proposed LT strategy improves as the delay constraint is relaxed, and achieves the Shannon lower bound under certain matching conditions between the source and the channel statistics.

关键词： Delays Fading Distortion measurement Vectors Channel coding AWGN channels

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Using predictable observer mobility for power efficient design of sensor networks

Using predictable observer mobility for power efficient desi...

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2nd International workshop on Information processing in sensor Networks

作者： Chakrabarti, A Sabharwal, A Aazhang, B Rice Univ Houston TX 77005 USA

ISBN: (纸本)3540021116

In this paper, we explore a novel avenue of saving power in sensor networks based on predictable mobility of the observer (or data sink). Predictable mobility is a good model for public transportation vehicles (buses, shuttles and trains), which can act as mobile observers in wide area sensor networks. To understand the gains due to predictable mobility, we model the data collection process as a queuing system, where random arrivals model randomness in the spatial distribution of sensors. Using the queuing model, we analyze the success in data collection, and quantify the power consumption of the network. Even though the modeling is performed for a network which uses only single hop communication, we show that the power savings over a static sensor network are significant. Finally, we present a simple observer-driven communication protocol, which follows naturally from the problem formulation and can be used to achieve the predicted power savings.

关键词： sensor networks

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Employing spectroscopic and pattern recognition techniques to examine food quality both internally and externally as it cooks in an industrial oven

Employing spectroscopic and pattern recognition techniques t...

引用

2nd European workshop on Optical Fibre sensors

作者： O'Farrell, M Lewis, E Flanagan, C Lyons, WB Jackman, N Univ Limerick Dept Elect & Comp Engn Limerick Ireland

ISBN: (纸本)0819454346

An Optical fibre based sensor system has been developed for the purpose of examining the colour of food products online as they cook in a large-scale industrial oven. By classifying the colour of each cooking stage it is possible to automatically determine if the food is cooked to an optimum perceived colour. Developments have been made on previous work by the authors [1] by further examining the internal colour of the food and testing the repeatability of the system. Spectroscopic techniques are employed to determine the colour and this signal is interrogated using an Artificial Neural Network.

关键词： optical fibre sensor colour classification process control spectroscopy artificial neural network pattern recognition feed forward networks food processing industry back propagation learning

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Primary users detect for Multiple-antenna Cognitive Radio based on Blind Source Separation

Primary users detect for Multiple-antenna Cognitive Radio ba...

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2nd International Symposium on Intelligent Information Technology Application

作者： Xu, Gang Lu, Yourong He, Jun Hu, Ning SW Elect & Telecommun Tech Res Inst Chengdu Peoples R China

ISBN: (纸本)9780769535050

In this paper, we suggest blind source separation (BSS) technology for primary users detect, which is very important in cognitive radio (CR). Multiple-antenna system should be a part of CR. Different antenna receives the same CR signal from different path, if only CR is being working. When primary user starts working, different antenna receives mixed signals of CR and primary user from different path;which can satisfy the BSS situation. CR can separate different signals with little collision. At the next time, CR can jump to next carrywave or modulation type.

关键词： Cognitive radio Blind source separation Chromium Wireless communication Computational intelligence Source separation Neural networks signal processing Receiving antennas sensor systems

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Augmented L-Shaped Nested array Based on the Fourth-Order Difference Co-array Concept

Augmented L-Shaped Nested Array Based on the Fourth-Order Di...

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sensor array and multichannel signal processing workshop

作者： Xiangnan Li Shiwei Ren Jianyan Liu Weijiang Wang School of Information and Electronics Beijing Institute of Technology Beijing China Science and Technology on Space Physics Laboratory Beijing China

This paper presents a new two dimentional(2D) sparse array called the augmented L-shaped nested array based on the concept of fourth-order difference co-array. By properly choosing the relative positions of two L-shaped nested arrays, one could obtain a virtual planar array containing a large-scale hole-free uniform rectangular co-array. As a result, the degree of freedom could be greatly enhanced. Many theoretical properties are derived and simulations are included by considering the fourth-order cumulants of quasi-stationary signal to validate the superior performance of the proposed array in comparison with other 2D sparse arrays.

关键词： Two dimensional displays sensor arrays Covariance matrices array signal processing Planar arrays Conferences

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Adapting a MIMO/phased-array radar transmit beampattern to target location

Adapting a MIMO/phased-array radar transmit beampattern to t...

引用

International workshop on Cognitive Information processing

作者： Fuhrmann, Daniel R. Browning, J. Paul Rangaswamy, Muralidhar Department of Electrical and Computer Engineering Michigan Technological University Houghton MI 49931 United States U.S. Air Force Research Laboratory Sensors Directorate Radar Signal Processing Branch Wright-Patterson AFB OH United States

ISBN: (纸本)9781424464593

Proposed MIMO and hybrid MIMO/phased array (HMPAR) radar systems have the potential for tremendous flexibility in the choice of the transmit beampattern, through the selection of multiple transmitted signals. This paper considers how one might exploit that flexibility in light of prior information or uncertainty in target spatial location, for parameter estimation or tracking applications. We first consider an idealized problem of distributing energy across multiple target sites given a prior probability distribution on those sites. It shown that the optimal allocation of energy would be proportional to the square root of the prior probability. Second, we propose a method to approximate this optimal distribution of energy using a MIMO radar or HMPAR radar system. The method chooses signals that realize an intrapulse beamscan over the region of interest, with a nonuniform distribution of scan points matched to the desired distribution of energy. © 2010 ieee.

关键词： MIMO radar

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