Electrical/Electronics

ISO 26262 & Automotive Electronics Development

Compliance standards, especially those that involve relatively new functional safety elements, will likely add additional requirements to the development process. But ISO 26262, in particular, will add more than new requirements to the product life cycle for automotive hardware-software systems. This Functional Safety standard will act as a framework impacting integrated requirements traceability, risk management, validation, verification, documentation and collaboration throughout the systems engineering “V” model life cycle process (see Figure). ISO 26262 will also require the qualification of tools used to create automotive systems. This paper examines the impact of the standard on the development process and support tool chains for automotive electronics.

Posted in: Briefs, TSP, Electronics & Computers, Information Sciences, Semiconductors & ICs, Software, Computer software and hardware, Life cycle analysis, Safety regulations and standards

Read More >>

PTC Heater Brings Greater Control for Hand-held Medical Devices and Disposables

Point of Care diagnostics devices, whether handheld or single-use, often require a brief application of tightly controlled heat. The disposable nature of these devices requires a low-cost component capable of delivering that heat reliably and safely. Heatron's new PTC heater solution uses a polymer-based heater technology that controls heat to within ±2°C of the target temperature, and reduces unit cost by eliminating sensors and applied controls.

Posted in: White Papers, Briefs, TSP, Electronics & Computers, Thermoelectrics, Medical, Medical equipment and supplies, Heating, ventilation, and air conditioning systems (HVAC), Polymers

Read More >>

Deployable Antenna Circuit Board Material Design and Fabrication Process

This technology has applications in solar arrays for small satellites.The Integrated Solar Array and Reflectarray (ISARA) antenna requires a rugged circuit board material that will meet the following requirements: (1) remains sufficiently flat over the required operating temperature range with solar cells mounted, and under full solar illumination, including heat dissipation due to ≈30% efficiency solar cells; (2) provides a sufficiently high-quality RF-grade circuit board material needed to print the reflectarray antenna; (3) is sufficiently thin (<2.5 mm) to fit within the available stowage volume; and (4) has low mass density (≈5 kg/m2).

Posted in: Briefs, TSP, Electronics, Electronics & Computers, Antennas, Integrated circuits, Fabrication

Read More >>

Moon Tours Android

NASA’s Jet Propulsion Laboratory, Pasadena, California This Android app provides a native interface to the Lunar Mapping and Modeling Portal’s (LMMP) lunar data archive and analysis tools. It complements the iOS app previously released, incorporating a very similar feature set. Both apps contain a subset of the functionality available in the desktop/Web version. Compared to the iOS version of the LMMP, the Android version provides the additional tools necessary to perform elevation analysis and perimeter/area measurements.

Posted in: Briefs, TSP, Electronics & Computers, Electronics & Computers, Software, Computer software and hardware, Imaging and visualization, Historical reference

Read More >>

Development of a Multi-User Modem for Space Telecommunications

This technology has applications in the cellphone industry. NASA’s Jet Propulsion Laboratory, Pasadena, California Efficient support of planetary surface missions typically requires an orbiting asset that acts as a relay point to/from Earth. Orbital relay passes are normally 5 to 15 minutes in duration over any specific landed site. When multiple landed assets are co-located or near-located in the same coverage circle of a single relay orbiter, their telecom relay support opportunities will overlap. This will be the case with cooperative lander missions, a lander-rover operations pair, distributed intelligent lander missions, and future deployment of multiple equipment components for support of complex sample return or manned operations. In these situations, the capability of simultaneous support to multiple landers is very valuable for mission performance and operations flexibility. This technology work enables simultaneous telecom support to multiple landers (Mars, Titan, Europa), and provides single-radio, multi-mode support to Entry, Descent & Landing (EDL) and emergency operations (e.g., demodulation + Open Loop Recording).

Posted in: Briefs, TSP, Electronics & Computers, Satellite communications, Telecommunications systems, Spacecraft

Read More >>

Wire Bonding to Pads in Tilted Planes

This technique can be used in industries where devices need to be made smaller and lighter, such as medical, aerospace, automotive, and military.Scientific imaging arrays need to have their individual imaging elements arranged in a close-spaced mosaic. The typical single imaging element is a silicon chip mounted on a larger support frame. This excess area of the support frame takes away valuable imaging space from the mosaic. This appears as a grid of black (no data) in the overall mosaic image. Making the support frame smaller makes the amount of lost data smaller, and the imaging elements can be spaced more closely together. Eliminating the support frame altogether brings the imaging elements even closer. This is referred to as four-side buttable.

Posted in: Briefs, TSP, Electronics & Computers, Imaging and visualization

Read More >>

cFE/CFS Evolution for Multicore Platforms

Goddard Space Flight Center, Greenbelt, Maryland This effort ports the Core Flight Executive (cFE)/Core Flight System (CFS) flight software architecture to multicore processor platforms, and provides mission developers with a common, flightready, flexible software environment that supports single, multi-processor, and multicore systems. Currently the cFE/CFS only supports single-core processors.

Posted in: Briefs, TSP, Electronics & Computers, Architecture, Avionics, Communication protocols, Computer software and hardware

Read More >>

White Papers

The U.S. Government does not endorse any commercial product, process, or activity identified on this web site.