Sensors/Data Acquisition

Lightweight Metal Rubber Textile Sensor for In-Situ Lunar Health Monitoring

This personnel status sensor can be used to measure, record, and communicate heart rate, electrocardiogram (ECG), and core body temperature information. Lyndon B. Johnson Space Center, Houston, Texas Extravehicular activities (EVAs) are dangerous to astronauts for a number of reasons, including high levels of physical exertion, potential for impacts by space debris particulates that could puncture the spacesuit and cause depressurization, Moon dust exposure that is abrasive and possibly biologically harmful, harsh thermal environments (extreme variation from –150 to >120 ºC when directly exposed to the Sun), and extreme low pressure (≈0 atm). These harsh environmental conditions inevitably lead to emotional pressure and stress, which directly impact physiological condition and potentially affect performance and safety. Because many EVA operations are time-consuming, astronauts may be extremely uncomfortable for several continuous hours.

Posted in: Briefs, Sensors

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Force Sensors For Design

IN RECENT YEARS, factors such as consumer demand and a tough economy have pushed OEMs to produce sleeker, smaller, and less costly products than in the past. This forces designers to spec or engineer parts for increasingly tight space requirements. In this difficult situation, even small components such as force sensors can play a surprisingly big role in the development of successful solutions. A patented, thin-film, flexible but accurate force sensor was developed specifically to target industry needs for a low-cost, unobtrusive, force or pressure-measurement solution. The unique technology eliminates many of the challenges plaguing engineers in the design of streamlined products.

Posted in: White Papers, Sensors

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SEA5: Space Environment Automated Alerts & Anomaly Analysis Assistant

Goddard Space Flight Center, Greenbelt, Maryland The Community Coordinated Modeling Center (CCMC) provides a wide range of space weather tools and services for the general scientific community. One such product that facilitates space weather situational awareness is collectively known as the Integrated Space Weather Analysis (ISWA) System. Using the ISWA system and other tools, space weather forecasters are able to assess the space environment in both real time and for historical cases — both of which help mitigate potential space weather impacts on missions, as well as assist in spacecraft anomaly resolution. The Space Environment Automated Alerts & Anomaly Analysis Assistant (SEA5) will provide past, present, and predicted space environment information for specific missions, orbits, and user-specified locations throughout the heliosphere, geospace, and on the ground.

Posted in: Briefs, Data Acquisition

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Extensible Data Gateway Environment (EDGE)

NASA’s Jet Propulsion Laboratory, Pasadena, California The NASA Physical Oceanography Distributed Active Archive Center (PO.DAAC) is NASA’s designated data center for information relevant to the physical state of the ocean. Its core datamanagement and workflow system, Data Management and Archive System (DMAS), is responsible for processing hundreds of thousands of data products each day, around the clock. Its inventory captures over 800 datasets, several million granules, and millions of files. PO.DAAC is in need of a solution to help users quickly identify the relevant oceanographic data artifact. It also needs to export metadata according to the ISO-19115, FGDC, and GCMD specifications. Developing such a solution on top of its Oracle database has several issues. First, it is difficult to maintain since SQL needs to be updated when a schema changes or when new search criteria is needed. Second, multi-table joins yield poor performance. Third, query performance can be improved with additional indexes, but performance is negatively impacted on updates. Fourth, exposing the operational database as the direct backend to a publicly accessible service layer would subject Oracle to a Denial of Service (DoS) attack, which could halt the already very busy DMAS operation environment.

Posted in: Briefs, Data Acquisition

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Flight Test Maneuvers for Efficient Aerodynamic Modeling

Langley Research Center, Hampton, Virginia Flight testing is expensive. It is therefore important that necessary flight data be collected in the most efficient manner possible. Inputs traditionally used for flight test maneuvers to collect aircraft stability and control data include doublets, impulses (stick raps), multisteps, and frequency sweeps. All of these input types are designed for single-axis response, although often the inputs are applied sequentially to different controls to collect multi-axis data.

Posted in: Briefs, Data Acquisition

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JPL CO2 Virtual Science Data Environment (VSDE)

NASA’s Jet Propulsion Laboratory, Pasadena, California The JPL CO2 Virtual Science Data Environment (VSDE) (http://co2.jpl.nasa.gov) is a comprehensive effort to bring together the models, data, and tools necessary for atmospheric CO2 research. The VSDE site is designed to provide streamlined Web-based discovery and access to multiple global and regional carbon dioxide data sets. Furthermore, this site provides tools for conversion, manipulation, and transformation of the data to facilitate research.

Posted in: Briefs, Data Acquisition

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Python Advanced Microwave Precipitation Radiometer Data Toolkit (PyAMPR)

Marshall Space Flight Center, Alabama Advanced Microwave Precipitation Radiometer (AMPR) brightness temperature data from NASA field projects are in ASCII format. This Python script defines a class that will read in a single file from an individual aircraft flight and pull out timing, brightness temperatures from each channel, geolocation, and other information and store them as attributes using numpy arrays of the appropriate type.

Posted in: Briefs, Data Acquisition

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White Papers

Reliable VFD Cables Boost Productivity, Minimize Downtime
Sponsored by Lapp Group
Force Transfer Machines
Sponsored by Morehouse
The Advantages of Cooled IR Cameras
Sponsored by FLIR
Addressing Security Vulnerabilities at the Source
Sponsored by PRQA
Evaluating the Chemistry of Brake Pads using SEM-EDS
Sponsored by Thermo Fisher
Hermetic Feedthroughs Safeguard Mission-Critical Electronics
Sponsored by Douglas Electrical Components

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