MEMs

FPGA Design Solution

Xilinx (San Jose, CA) introduces the ISE® Design Suite 11.1, an FPGA design solution with fully interoperable domain-specific design flows and tool configurations for logic, digital signal processing (DSP), embedded processing, and system-level design. ISE Design Suite 11.1 has four domain-specific design configurations: the Logic Edition, DSP Edition, Embedded Edition, and System Edition. ISE Design Suite 11.1 shrinks development cycles up to 50 percent, reduces dynamic power consumption by 10 percent on average, and boosts tool performance by 2X for current generation Virtex-5 and Spartan- 3 FPGA-based designs.

Posted in: Products, Products, Embedded Technology, Board-Level Electronics, Electronics & Computers
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Power Supply Reference Design

Fairchild Semiconductor (San Jose, CA) has introduced the RD212, a 200W DC/DC power supply reference design that offers high efficiency (up to 94 percent), and low noise characteristics due to its zero voltage switching (ZVS) technique. It provides a 24V output at 8A and protection functions such as over-voltage protection (OVP), overload protection (OLP), overcurrent protection (OCP), abnormal overcurrent protection (AOCP), and internal thermal protection (TSD).

Posted in: Products, Products, Electronics & Computers
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Using Event Systems and DMA to Cut Power Consumption

The trick to exploiting the ultra lowpower characteristics of microcontrollers with 100 nA sleep mode power consumption is to keep them in sleep mode as much as possible. The problem is that the growing number of on-chip peripherals and the increasingly dataand interrupt-intensive nature of modern applications make this a very difficult objective to achieve.

Posted in: Articles, Articles, Embedded Technology, Board-Level Electronics, Electronics & Computers, Integrated circuits, Energy consumption
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Using Dynamic Parameters to Measure Digitizer Performance

Much confusion exists about characterizing the performance of a highspeed digitizer device. Nominal vertical resolution is routinely presented as an indicator of a digitizer’s performance, but the relevance of this parameter is dubious since a digitizer’s true performance is characterized by the Dynamic Parameters*.

Posted in: Articles, Articles, Electronics & Computers, Electronic equipment, Performance tests
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Designing Versatile COTS Data Acquisition Systems

Designing a versatile data acquisition (DAQ) system begins by comparing features of the signal of interest to the capabilities of current state-of-the-art A/D converters. Specifically, signal bandwidth and maximum signal frequency are compared to the A/D maximum sampling rate and bandwidth. The specifications in Table 1 are typical of current A/Ds.

Posted in: Articles, Articles, Embedded Technology, Board-Level Electronics, Electronics & Computers, Design processes, Data acquisition and handling
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High-Resolution Anatomic and Elastographic Transrectal Ultrasound for Improved Diagnosis of Prostate Cancer

Prostate cancer screening generally uses the Pro state Spe cific Antigen (PSA) blood test, free-PSA testing, and Digital Rectal Exam ination (DRE). When the PSA is used, there exists a significant gray area in which cancers may be missed. Addition ally, DRE is practically limited to the detection of shallow (subcapsular) palpable abnormalities. Even systematic multi-core biopsy fails to detect clinically detectable cancers in up to 34% of men. Thus, there is compelling clinical interest in finding improved detection methods.

Posted in: Briefs, Medical, Diagnosis, Diseases, Physical examination, Acoustics, Test equipment and instrumentation
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Medical Information Network Decision Support System

In order to facilitate a more rapid and systematic transfer of new medical knowledge and capabilities into mainstream clinical practice, a new Medical Information Network Decision Support (MINDS) system has been proposed. This system is intended to be a platform for storing and fusing medical data across all levels (e.g. from low-level genomic and proteomic data to higher level clinical data) in a standardized way.

Posted in: Briefs, Software, Data exchange, Medical equipment and supplies, Data management
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Characterizing Turbulent Wind Flow Near a Wind Barrier Using Sonic Anemometers

The Holloman High Speed Test Track (HHSTT) facility at Holloman Air Force Base (HAFB), NM, has a test section of 1.8 km that contains an artificial rain field generation capability over the track. The raindrops produced can be excessively deflected when the cross-track wind speed is greater than 1 m/s. To extend testing times to days when moderate wind conditions (1 to 5 m/s) are present, the HHSTT plans to construct a wind barrier for cross-track wind reduction. Before the construction of a complete wind barrier, an observational study was carried out to characterize the mean and turbulent wind fields using a small prototype section of the wind barrier.

Posted in: Briefs, Physical Sciences, Water, Test equipment and instrumentation, Test facilities, Turbulence
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Method for Detecting Planar Surfaces in Outdoor Urban Environments

The ability to detect and recognize buildings is important to a variety of vision applications operating in outdoor urban environments. These include landmark recognition, assisted and autonomous navigation, image-based rendering, and 3D scene modeling. The problem of detecting multiple planar surfaces from a single image has been solved with this technology.

Posted in: Briefs, Information Technology, Imaging, Product development
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Multifunctional Properties of Structural Gel Electrolytes

Due to the demand for more advanced and lightweight systems, multifunctional composite structures that can function as electrochemical energy converters, while bearing mechanical load, are in development. This research involves a materials-based approach in which each component of the system serves to bear and/or efficiently transfer load. In this iteration, multifunctional structural gel electrolytes were prepared by the integration of conductive pathways using non-aqueous solvents into structural resin networks. Polyethylene glycol (200 MW) and propylene carbonate were used as the non-aqueous solvents, while vinyl ester and epoxy resin were used as structural resins. The monomer and solvents were incorporated together and polymerized to create conductive pathways in cross-linked networks. The impact of chemistry and weight fraction of both liquid and resin were investigated on the electrochemical-mechanical response of the resulting system.

Posted in: Briefs, Materials, Aircraft structures, Body structures, Composite materials, Electrolytes, Materials properties
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