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Method of Calibration for a Large Cathetometer System

This method costs considerably less than does a prior method A method of calibration has been devised for a pair of mutually orthogonal two-axis cathetometers that, when used together, yield measurements of three-dimensional positions of objects mounted on an optical bench. Each cathetometer has a horizontal travel of 1.8 m and a vertical travel of 1.2 m. The cathetometers are required to measure X ,Y, and Z coordinates (see figure) to within ±0.005 in.(±0.127 mm).

Posted in: Mechanical Components, Briefs, TSP

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Advanced Infant Car Seat Would Increase Highway Safety

This system would keep a baby safe, comfortable, and entertained, thereby reducing distractions for an adult driver. An advanced infant car seat has been proposed to increase highway safety by reducing the incidence of crying, fussy behavior, and other child-related distractions that divert an adult driver's attention from driving. In addition to a conventional infant car seat with safety restraints, the proposed advanced infant car seat would include a number of components and subsystems that would function together as a comprehensive infant-care system that would keep its occupant safe, comfortable, and entertained, and would enable the driver to monitor the baby without having to either stop the car or turn around to face the infant during driving.

Posted in: Mechanical Components, Briefs

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New Material for Surface-Enhanced Raman Spectroscopy

Reproducible measurements can be made quickly,without preparation of samples. A chemical method of synthesis and application of coating materials that are especially suitable for surface-enhanced Raman spectroscopy (SERS)has been developed.The purpose of this development is to facilitate the utilization of the inherently high sensitivity of SERS to detect chemicals of interest (analytes) in trace amounts, without need for lengthy sample preparation.

Posted in: Materials, Briefs

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Treated Carbon Nanofibers for Storing Energy in Aqueous KOH

Treatment can increase specific capacitance by as much as 400 percent. A surface treatment has been found to enhance the performances of carbon nanofibers as electrode materials for electrochemical capacitors in which aqueous solutions of potassium hydroxide are used as the electrolytes. In the treatment, sulfonic acid groups are attached to edge plane sites on carbon atoms.

Posted in: Materials, Briefs

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Designing Application Software for DSP Chips

"Higher-level" programming languages and software help developers quickly set up and test an application. When it comes to building a digital signal processing (DSP) board, it is important not to neglect the requirements of the application code — the code that actually acquires and processes data to provide useful results. Developers can write code using the assembly language native for a chosen DSP chip, or they can use a higher-level language such as C or C++ that a compiler converts into the operating code for a specific DSP chip. Even higher-level tools and software applications let developers perform operations from menus or drag-and-drop lists of functions; the underlying code of the tool or application converts these graphical operations into the operating code for the specific DSP chip.

Posted in: Information Sciences, Briefs

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Product Lifecycle Management System Aligns Manufacturer's Design and Development

An aerospace equipment manufacturer uses PLM to improve collaboration among design and development systems worldwide. Smiths Aerospace, a leading trans-Atlantic aerospace equipment manufacturer, has grown dramatically in recent years through a combination of strategic acquisitions and major program wins. To maintain its key position in the supply chains of all major military and civil aircraft and engine manufacturers, the company needed to align its heterogeneous design and development systems around the world. In addition to aligning these systems,the company also wanted to integrate new divisions into its Product Lifecycle Management (PLM) system.

Posted in: Information Sciences, Briefs

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Real-Time Adaptive Color Segmentation by Neural Networks

Changing images would be analyzed to detect features of interest. Artificial neural networks that would utilize the cascade error projection (CEP) algorithm have been proposed as means of autonomous, real-time,adaptive color segmentation of images that change with time.In the original intended application,such a neural network would be used to analyze digitized color video images of terrain on a remote planet as viewed from an uninhabited spacecraft approaching the planet.During descent toward the surface of the planet, information on the segmentation of the images into differently colored areas would be updated adaptively in real time to capture changes in contrast, brightness, and resolution, all in an effort to identify a safe and scientifically productive landing site and provide control feedback to steer the spacecraft toward that site. Potential terrestrial applications include monitoring images of crops to detect insect invasions and monitoring of buildings and other facilities to detect intruders.

Posted in: Information Sciences, Briefs, TSP

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