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Evaluation of ubiquitious use of wireless sensor network technology in data acquisition and telemetry applications

Evaluation of ubiquitious use of wireless sensor network tec...

43nd Annual International Telemetering Conference and Technical Exhibition - Answering Tomorrow's Telemetry Challenges, ITC/USA 2007

作者： Kenney, Joshua D. Cunningham, Chris J. Abbott, Ben A. Southwest Research Institute Automation and Data Systems Division San Antonio TX United States

Industrial wireless sensor networks can be designed to meet the strict requirements of specific distributed applications. Emerging standards have enabled the development of low-cost, lowpower sensor nodes that are quickly becoming a commodity, enabling the realization of efficient and reliable data acquisition and telemetry in many systems. Moreover, new and exciting possibilities arise from the distributed computing power of the sensor nodes, the ability to monitor and aggregate data across large arrays of sensors, and the ability to model dynamic and rugged environments that were previously beyond the reach of traditional data acquisition and telemetry systems. © International Foundation for Telemetering, 2007.

关键词： data acquisition

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Filter enables real-time performance

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IEEE Potentials 2007年第2期26卷 17-24页

作者： Penner, Andrew Hall, Jeffrey Hall, Lindsey R. Jeirath, Nakul Shaikh, Omar University of Illinois Annapolis Micro Systems Inc. Annapolis MD Purdue Niversity Southwest Research Nstitute San Antonio TX Automation and Data Systems Division U.S. Veterans Health Dministration Purdue Niversity West Lafayette IN

A group of undergraduate students from the School of Electrical and Computer Engineering at Purdue University worked on developing and fabricating a printed circuit board (PCB) design to demonstrate the full functionality and capabilities of the FIR filter design. The PCB design includes a simplified power supply for the entire PCB as well as high-speed programmable logic devices (PLDs) to handle storing and loading the preselected coefficients via the multiplexed input bus. The high-speed PLDs were chosen to quickly change the coefficients of the desired filter without having to worry about the timing and bus management issues associated with memory ICs. The PLDs will effectively serve as memory units, preprogrammed to load the coefficients into the FIR filter using the enable signal that is automatically generated by the FIR filter. The team designed a circuit using a variable-frequency clock generator to produce the operating frequency for the FIR filter that will allow the device to be clocked to a maximum frequency to accommodate testing for CD quality audio filtering. The design meets both area and speed design constraints and provides expected results in both synthesis and transistor-level simulations.

关键词： FIR filters

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A probabilistic, hierarchical, and discriminant framework for rapid and accurate detection of deformable anatomic structure

A probabilistic, hierarchical, and discriminant framework fo...

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2007 IEEE 11th International Conference on Computer Vision, ICCV

作者： Kevin Zhou, S. Guo, F. Park, J.H. Carneiro, G. Jackson, J. Brendel, M. Simopoulos, C. Otsuki, J. Comaniciu, D. Integrated Data Systems Department Siemens Corporate Research Princeton NJ 08540 United States Center for Automation Research University of Maryland College Park MD 20742 United States Ultrasound Division Siemens Medical Solutions Mountain View CA 94039 United States

We propose a probabilistic, hierarchical, and discriminant (PHD) framework for fast and accurate detection of deformable anatomic structures from medical images. The PHD framework has three characteristics. First, it integrates distinctive primitives of the anatomic structures at global, segmental, and landmark levels in a probabilistic manner. Second, since the configuration of the anatomic structures lies in a high-dimensional parameter space, it seeks the best configuration via a hierarchical evaluation of the detection probability that quickly prunes the search space. Finally, to separate the primitive from the background, it adopts a discriminative boosting learning implementation. We apply the PHD framework for accurately detecting various deformable anatomic structures from Mmode and Doppler echocardiograms in about a second. ©2007 IEEE.

关键词： Deformation

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Achieving high-accuracy time distribution in network-centric data acquisition and telemetry systems with ieee 1588

Achieving high-accuracy time distribution in network-centric...

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42nd Annual International Telemetering Conference and Technical Exhibition - Telemetry: Enabler of Innovations in Enterprise Architecture, ITC/USA 2006

作者： Grim, Evan T. Automation and Data Systems Division Southwest Research Institute United States

Network-centric data acquisition and telemetry systems continue to gain momentum and adoption. However, inherent non-deterministic network delays hinder these systems' suitability for use where high-accuracy timing information is required. The emerging IEEE 1588 standard for time distribution offers the potential for real-time data acquisition system development using cost-effective, standards-based network technologies such as Ethernet and IP multicast. This paper discusses the challenges, realities, lessons, and triumphs experienced using IEEE 1588 in the development and implementation of such a large-scale network-centric data acquisition and telemetry system. IEEE 1588 clears a major hurdle in moving the network-centric buzz from theory to realization. © International Foundation for Telemetering, 2006.

关键词： data acquisition

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Managing technological innovation in intelligent transportation system communications infrastructures 13

Managing technological innovation in intelligent transportat...

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13th World Congress on Intelligent Transport systems and Services, ITS 2006

作者： Lamm, Ryan D. Network Communications and Infrastructure Group Intelligent Transportation Systems Department Automation and Data Systems Division Southwest Research Institute 6220 Culebra Road San AntonioTX78238-5166 United States

Intelligent Transportation systems (ITS) have unique deployment characteristics that affect the way and timing that new and emerging technology should be integrated. It is important for ITS managers to understand the effects of dominant design, disruptive technology, innovation, standards, and industry trends on product, technology, and system lifecycles. Industry and related examples are provided to illustrate the importance of technology management as it pertains to ITS communications infrastructures. Under this context, considerations are discussed for deploying a new or upgrading an existing infrastructure.

关键词： Intelligent systems

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Adaptive image processing and sensing technologies for detecting anomalous conditions near critical transportation infrastructure assets

Adaptive image processing and sensing technologies for detec...

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International Conference on Intelligent Transportation

作者： M. Magee M. Rigney Automation and Data Systems Division Southwest Research Institute San Antonio TX USA

This work presents a methodology for detecting anomalous conditions on transportation infrastructure assets and generating alarms to draw the attention of personnel monitoring them via various sensing technologies. The methodology developed, which consists of a four part process, is capable of detecting conditions that vary substantially from those that are normally observed. This four part process consists of the following steps: (1) an intensity characteristic model of the transportation asset is learned during a training phase. (2) During the foreground object segmentation phase, objects are segmented based on pixel characteristics that vary substantially from those embodied in the intensity characteristic model. (3) Segmented objects that match certain morphological, topological, and/or geometric constraints are flagged as being candidates for further (temporal) processing. (4) Segmented objects with unanticipated temporal persistence or geometric characteristics are then identified and brought to the attention of a human operator.

关键词： Image processing National security Surveillance Protection Terrorism Radiation monitoring Object segmentation Humans Intelligent transportation systems Road transportation

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Reducing data distribution bottlenecks by employing data visualization filters

Reducing data distribution bottlenecks by employing data vis...

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International Symposium on High Performance Distributed Computing

作者： E. Franke M. Magee Automation and Data Systems Division Southwest Research Institute USA

Between 1994 and 1997, researchers at Southwest Research Institute (SwRI) investigated methods for distributing parallel computation and data visualization under the support of an internally funded Research Initiative Program entitled the Advanced Visualization Technology Project (AVTP). A hierarchical data cache architecture was developed to provide a flexible interface between the modeling or simulation computational processes and data visualization programs. Compared to conventional post facto data visualization approaches, this data cache structure provides many advantages including simultaneous data access by multiple visualization clients, comparison of experimental and simulated data, and visual analysis of computer simulation as computation proceeds. However, since the data cache was resident on a single workstation, this approach did not address the issue of scalability of methods for avoiding the data storage bottleneck by distributing the data across multiple networked workstations. Scalability through distributed database approaches is being investigated as part of the Applied Visualization using Advanced Network Technology Infrastructure (AVANTI) project. This paper describes a methodology currently under development that is intended to avoid bottlenecks that typically arise as the result of data consumers (e.g. visualization applications) that must access and process large amounts of data that has been generated and resides on other hosts, and which must pass through a central data cache prior to being used by the data consumer.

关键词： data visualization Computational modeling Computer simulation Workstations Scalability Concurrent computing Distributed computing Research initiatives Computer architecture Computer interfaces

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A practical approximation algorithm for the LMS line estimator 97

A practical approximation algorithm for the LMS line estimat...

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Proceedings of the eighth annual ACM-SIAM symposium on Discrete algorithms

作者： David M. Mount Nathan S. Netanyahu Kathleen Romanik Ruth Silverman Angela Y. Wu Department of Computer Science and Institute for Advanced Computer Studies University of Maryland College Park MD Center for Automation Research University of Maryland College Park MD and Center of Excellence in Space Data and Information Sciences Code 930.5 Space Data and Computing Division NASA Goddard Space Flight Center Greenbelt MD Center for Automation Research University of Maryland College Park MD and National Institute of Standards and Technology Gaithersburg MD Department of Computer Science University of the District of Columbia Washington DC and Center for Automation Research University of Maryland College Park MD Department of Computer Science and Information Systems The American University Washington DC

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Seeing: machine vision

Seeing: machine vision

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IEEE International Conference on systems, Man and Cybernetics

作者： E.A. Franke Institute Engineer Automation and Data Systems Division Southwest Research Institute USA

Even though computer vision systems are not able to match the ability of biological vision in dealing with complex scenes, many problems are being solved. Often multiple sensors are used, including stereo cameras, structured light patterns, laser light striping, and multiple optical wave lengths. The use of sensor fusion to combine information from these multiple sensors provides robust and high speed systems. As computer, electronic and sensor technology develops, this application of multiple types of sensors with high speed data fusion can be expected to increase and provide more robust systems for the future.< >

关键词： Machine vision Sensor fusion Biosensors Optical sensors Robustness Sensor systems and applications Computer vision Layout Stereo vision Cameras

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An optimal algorithm for approximate nearest neighbor searching 94

An optimal algorithm for approximate nearest neighbor search...

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Proceedings of the fifth annual ACM-SIAM symposium on Discrete algorithms

作者： Sunil Arya David M. Mount Nathan S. Netanyahu Ruth Silverman Angela Wu Max-Planck-Institut für Informatik Im Stadtwald D-66123 Saarbrücken Germany Department of Computer Science and Institute for Advanced Computer Studies University of Maryland College Park Maryland Space Data and Computing Division NASA Goddard Space and Flight Center Greenbelt Maryland and Center for Automation Research University of Maryland College Park Maryland Department of Computer Science University of the District of Columbia Washington DC and Center for Automation Research University of Maryland College Park Maryland Department of Computer Science and Information Systems The American University Washington DC

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