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Projected Capacitive (PCAP) Touch Panel

(Dallas, TX) has announced the addition of an 18.5-inch projected capacitive (PCAP) touch panel to the Crystal Touch: TRUE Multi-Touch PLUS standard product line. Crystal Touch: TRUE Multi-Touch PLUS panels provide a true multi-touch interface with a pre-integrated, optically bonded, soda-lime cover glass with a decorative black border. The additional layer of glass adds durability and is ready to be incorporated into touch driven devices. The 18.5-inch PCAP touch panel allows for up to 16 simultaneous touches and features the Atmel® maXTouch™ mXT1664S controller. The combination of Ocular's Crystal Touch technology and Atmel's maXTouch line of touchscreen controllers provide a robust and sophisticated touch solution that can identify and disregard unintended touches.

Posted in: Products, Products, Electronics & Computers
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Closed-Loop I2S Audio Amplifiers

Texas Instruments (TI) (Dallas, TX) has introduced a family of four digital-input, closed-loop I2S amplifiers for mid-power stereo audio applications including TVs, soundbars, portable docking stations, Bluetooth® speakers, and aftermarket automotive audio products. The TAS5760xx devices feature high switching frequency, allowing designers to use smaller output filter components to reduce overall solution size and bill of materials (BOM) cost. They stream 20W continuous power per channel without a heatsink, and deliver superior performance specifications, including THD+N of 0.03 percent at 1 W, crosstalk of -92 dB, and 66-uV idle channel noise.

Posted in: Products, Products, Electronics & Computers
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Confocal Imaging System for Ultra-Fast, Three-Dimensional Transport Studies in Thermal Management Applications

The objective of this work was to develop a high-speed, three-dimensional (3D) confocal imaging system to study coupled fluidic and heat transport processes for high-performance thermal management applications. However, to successfully implement these approaches, fundamental understanding of interfacial dynamics and transport processes was necessary.

Posted in: Briefs, Physical Sciences, Imaging, Thermal management
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Evaluating a Data Clustering Approach for Lifecycle Facility Control

Given the current emphasis on sustainability, there is a growing interest in monitoring various facets of building resource consumption. Building monitoring and automation systems most commonly exist as closed-loop systems for security, fire safety, water, electrical, and HVAC (Heating, Ventilation, and Air-Conditioning). One of the fundamental requirements of a mature engineering process model is the comparison of planned versus actual results for cost, risk, and quality control. For facility engineering, this implies that there must be a structured specification of building space requirements and a mechanism for detecting divergent system and occupant behaviors. Such a mechanism would have broad applicability for commissioning, energy efficiency, sustainability, diagnostics, maintenance, and a variety of other problems.

Posted in: Briefs, Physical Sciences, Sustainable development, Cost analysis, Risk management, Total life cycle management, Quality control
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Portable Data Recorder for Measuring Sand Grain Fracture After Blasts

Abullet cannot penetrate through a sandbag while an arrow can, so understanding the behavior of granular materials such as sand and its energy absorption in a blast is critical in the design of armor. To this end, as part of the “Soil Blast Modeling and Simulations” project sponsored by the Office of Naval Research’s Multidisciplinary University Research Initiative (MURI), experiments were performed using a portable data recorder to determine the mechanical behavior of sand grains under confined compression.

Posted in: Briefs, Physical Sciences, Particulate matter (PM), Soils, Materials properties, Event data recorders, Military vehicles and equipment
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Effect of Acceleration Frequency on Spatial Orientation Mechanisms

Extreme motion environments can induce loss of visual acuity, motion sickness, and spatial disorientation. Understanding how human sensory integration of acceleration stimuli affects spatial awareness will improve models of spatial disorientation and mishap analysis. While there are numerous studies describing vestibular semicircular canal responses to angular acceleration, less is known about vestibular otolith responses to linear acceleration. This gap in knowledge is important to resolve, since seasickness and airsickness are highly dependent on the predominant frequency of a linear acceleration stimulus.

Posted in: Briefs, Medical, Body regions, Human factors, Nervous system, Vehicle acceleration, Vehicle dynamics
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Localization of Head-Mounted Vibrotactile Transducers

T he human sensory systems most frequently used in military displays (vision and audition) are sometimes overloaded. When soldiers rely on visual or auditory displays, their situation awareness can be degraded due to the need to attend to the display. A proposed alternative sensory channel for soldier displays is the tactile channel. In military applications, VT displays are primarily being used to aid in orientation, navigation, and communication. Tactile displays can also be used to impart more abstract information such as in command-and-control applications.

Posted in: Briefs, Physical Sciences, Displays, Vibration, Helmets, Military vehicles and equipment
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Using Polyimide In 3D Thin Film Multilayer Circuitry

Today, the cost and complexity of all platforms and systems in military and defense technologies are being challenged by the need for high functionality in smaller but less expensive architecture, especially in light of current national budget challenges. In the area of RF and microwave electronics it is becoming evident that a move from two dimensional (2D) planar circuitry architecture to three dimensional (3D) thin film multilayer technology can result in dramatic reduction of chip size, increase of operation speed, and lower total module costs.

Posted in: Articles, Aerospace, Architecture, Integrated circuits, Polymers, Military vehicles and equipment
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Field Configurable MIL-DTL-55181 Power Distribution

The proliferation of scalable tactical equipment has driven the need for field configurable power-distribution systems. A stacking-interconnect technology has been developed that utilizes the same mating interfaces and locking mechanisms as standard MILDTL- 55181 connectors without the logistics planning and storage space requirements of Y-cables and power distribution panels.

Posted in: Articles, Defense, Architecture, Connectors and terminals, Integrated circuits, Electric power, Military vehicles and equipment
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Designing Thermal Management Systems for Smaller, Lighter Avionics

The avionics systems of military aircraft support maneuverability and situation awareness for the pilot, process essential images, operate sensors, record data, and provide for broadcast and communication between home base and wingman. The newest generation of military aircraft cannot be flown without avionics, and modern combat is making the leap to electronic warfare.

Posted in: Articles, Aerospace, Avionics, Thermal management, Military aircraft
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