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Modular, Portable, and Reconfigurable Wireless Sensing System

A modular, portable, reconfigurable wireless sensor system monitors and records environmental conditions in an aircraft cabin. By designing a sensor system that can be easily configured for different needs (with the ability and flexibility to accommodate different/ extra sensors), the system can be used to measure parameters that meet multiple research requirements. Through design considerations such as generalized signal interface, and hierarchical code structure that can be easily reworked for new sensors, this system can be used to measure parameters that meet multiple research requirements. This sensor system, the ASCENT 1000, is configured with temperature, humidity, sound level, carbon di-oxide, and pressure sensors. The system has been calibrated in the laboratory without the use of a pressure chamber.

Posted in: Briefs, Physical Sciences, Sensors and actuators, Wireless communication systems, Passenger compartments
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Performance Evaluation of Commercial Carbon Monofluoride Materials in Lithium Batteries

The performance of six different commercially available carbon monofluoride (CFx) materials was evaluated at four different discharge rates. The physical and chemical properties of the CFx materials were correlated to cell performance in lithium coin cells. This study was undertaken to determine how the physical and chemical properties of commercial CFx materials affect discharge capacity, discharge voltage, rate capability, and voltage delay in Li-CFx cells.

Posted in: Briefs, Materials, Lithium-ion batteries, Performance tests, Test procedures
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Nanodomain Model of Polymer-Derived Ceramics

Areport discusses a model developed to explain the unusual properties of polymer- derived ceramics (PDCs), which are so named because they are made by controlled pyrolysis of cross-linked polymers. PDCs are metastable ceramics that have potential to be further developed into high-temperature materials that can be tailored to have properties needed to perform specific functions. The PDCs studied thus far have comprised silicon, carbon, nitrogen, and oxygen. The unusual properties of PDCs are the following: They bear similarity to both polymers and metallic glasses, even though the pyrolysis temperatures used in producing them are with experimental data.

Posted in: Briefs, Materials, Simulation and modeling, Ceramics, Heat resistant materials, Materials properties, Polymers
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Lightcraft Propulsion for Launching a Small Satellite

A study of lightcraft propulsion systems in general has led to the conception and analysis of such a system for launching a small (having a mass no more than a few kilograms) satellite into a low orbit around the Earth. This study built on theoretical and experimental investigations of the feasibility of lightcraft, performed by a number of researchers during the past two decades. The word “lightcraft” signifies an aircraft or spacecraft that derives its propulsive energy from a laser beam aimed toward it from an external platform that, for the purpose of the present study, would be a ground station.

Posted in: Briefs, Mechanical Components, Mirrors, Lasers, Propellants, Satellites
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Eccentric Mounting and Adjustment System for Belt-Driven Devices

This design relates to an eccentric mounting and adjustment (EMA) system for belt driving, or for belt-driven devices, that is installed and operated within the restricted confines of an engine compartment, typically a motor vehicle. It satisfies two essential requirements for automotive devices driven by an endless flexible belt, including a reliable mounting to the engine block assembly, and a continuous provision of a proper amount of tension to the belt for either driving or driven devices. As a result, there is minimal wear and tear on device bearings and the belt, which reduces operational failures and assures maximum efficiency for these devices.

Posted in: Briefs, Mechanical Components, Mountings, Engine components
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PrPMC/XMC Module

Extreme Engineering Solutions (Middleton, WI) has introduced XPedite7201, a conduction- or aircooled PrPMC/XMC module, targeting the Intel® Atom™ processor running at up to 1.6 GHz at under 10W. This card comes with PCI Express or PCI interconnect and a Gigabit Ethernet port with integrated magnetics. XPedite7201 is ideal for highbandwidth data-processing applications. The module includes up to 1 GB of DDR2-533 SDRAM and up to 4 GB of NAND flash. P14 I/O includes two USB ports, two RS-232/422/485 serial ports, and Gigabit Ethernet.

Posted in: Products, Products, Electronics & Computers
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Triaxial Cable Kits

Keithley Instruments (Cleveland, OH) has introduced triaxial cable kits for semiconductor device probers that are capable of handling I-V, C-V, and pulsed I-V signals. Model 4210-MMPC-C is optimized for use with Cascade Microtech probers, and Model 4210-MMPC-S for use with SUSS Microtech probers. The cables are designed for compatibility with Keithley’s Model 4200-SCS Semiconductor Characterization System, as well as with other test instruments used for characterization.

Posted in: Products, Products, Electronics & Computers
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ESMexpress Modules

The XM2 from MEN Micro (Ambler, PA) is based on the latest Intel Core 2 Duo SP9300 processor with a clock frequency of up to 2.26 GHz. The advanced Intel processor, combined with the ruggedization and low development costs of the ESMexpress standard, make the XM2 a costeffective choice for a variety of harsh, mobile, and mission-critical environments found in the railway, avionics, industrial automation, and medical engineering industries.

Posted in: Products, Products, Electronics & Computers
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Cryptographic Authentication ICs

The AT88SA family of low-cost, ultralow- power authentication ICs from Atmel® Corporation (San Jose, CA) have an embedded SHA-256 engine and 256-bit cryptographic key. The first device in the family, the AT88SA102S, is a general purpose CrytpoAuthentication™ IC designed to protect consumers from counterfeit electronic and medical consumables, such as batteries, ink cartridges, test strips, blood bags, and breathing tubes. They can be used in any microcontroller-based system to secure network data transmissions such as satellite radio broadcasts or medical records, protect end-products from bogus firmware updates, and validate software or media modules.

Posted in: Products, Products, Electronics & Computers
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GPS and Cellular-Based Tracking Device

Laird Technologies (Chesterfield, MO) has been awarded a supply contract to provide the Stealth II GPS tracking device to Trackn powered by Enfotrace (Irvine, CA). The Stealth II is a selfcontained GPS and cellularbased tracking device that can quickly and effectively locate any vehicle or mobile asset. The cost-effective device is the smallest of its kind available on the market. Key product features include starter immobilizer, remote door unlock, no external antennas, vehicle location 24/7, alarm reporting, speed notification, electronic fencing, and ease of installation.

Posted in: Products, Products, Electronics & Computers
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