Special Coverage

High Field Superconducting Magnets
Active Response Gravity Offload and Method
Strat-X
Sonar Inspection Robot System
Lightweight Internal Device to Measure Tension in Hollow- Braided Cordage
System, Apparatus, and Method for Pedal Control
Dust Tolerant Connectors
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External Diagnostic Method to Detect Electrical Charging in Complex Ion Trapping Systems

This procedure is implemented without breaking the vacuum and/or disassembling the system. NASA’s Jet Propulsion Laboratory, Pasadena, California Electron-ionized atom trapping technology is widely used in mass spectrometry and atomic clocks. The complexity of the trapping configuration operating in an ultra-high vacuum system is driven by demands for ultimate sensitivity, performance, and fundamental science. Consequently, external diagnosis, maintenance, and design verification and validation without opening the vacuum and disassembling the system become increasingly difficult. In these ion trapping configurations, electrical charging of non-metallic materials or opening connections are a hard-to-detect problem, yet can easily compromise the intended trapping potential. More specifically, the JPL Linear Ion Trap Standards (LITS) will benefit from a non-invasive solution for system verification/validation, diagnosis, maintenance, and troubleshooting.

Posted in: Briefs, Test & Measurement

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Sonar Inspection Robot System

The system surveys interior volume, interrogates structure integrity, and displays real-time video and sonar. Lyndon B. Johnson Space Center, Houston, Texas The robotic inspection device prototype that was used for testing. NASA’s Johnson Space Center innovators have designed a Robotic Inspection System that is capable of surveying deep sea structures such as oil platform storage cells/tanks and pipelines in order to determine the volume of material remaining inside, interrogate structure integrity, and display real-time video and sonar. This inspection device and method could significantly reduce the cost of inspecting, and in the future, provide sampling of the structure contents. The technology is an all-in-one inspection device that includes cameras, sonar, and motion-sensing instruments with hardware and software components. This NASA-developed technology is available for licensing.

Posted in: Briefs, Test & Measurement

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Modules for Inspection, Qualification, and Verification of Pressure Vessels

This automated, modular, standardized system features interchangeable probes. Lyndon B. Johnson Space Center, Houston, Texas After decades of composite over-wrapped pressure vessel (COPV) development, manufacturing variance is still high, and has necessitated higher safety factors and additional mass to be flown on spacecraft, reducing overall performance. When liners are used in COPVs, they need to be carefully screened before wrapping. These flaws can go undetected and later grow through the thickness of the liner, causing the liner to fail, resulting in a massive leakage of the liner and subsequent mission loss.

Posted in: Briefs, Test & Measurement

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What's the Right 3D Printing Technology - FDM or Polyjet?

Fused deposition modeling (FDM®) and PolyJet® are two of the most advanced and effective additive manufacturing (AM) or 3D printing technologies available. They span the range from budget-friendly, desktop modeling devices to large-format, factory-floor equipment that draw from the capital expenditure budget, and can produce a range of output from precise, finely detailed models to durable production goods. While there is crossover in applications and advantages, these two technology platforms remain distinct and bring different benefits. Understanding the differences is the baseline for selecting the right technology for your application, demands and constraints.

Posted in: White Papers, Electronics & Computers, Manufacturing & Prototyping, Electronics & Computers, Software

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Using PXI to Build a High-Performance MEMS Microphone Testing System

The demand for increasing microphone signal quality from handheld mobile devices has led to the development of microphone signal processing technologies such as: HD audio, noise cancellation, active noise cancellation, beam forming, directional reception, stereo sound field reconstruction, and speech recognition. As well, devices incorporating multiple microphones are becoming more and more popular. Several newly released smart phones now integrate multiple MEMS (Micro Electrical-Mechanical System) microphones for improved background noise cancellation. All flagship smart phone models in introduced in 2015 featured three or more MEMS microphones to support HD audio, ambient noise cancellation, noise filtering, directional reception and speech recognition. Popularity of MEMS microphones is expected to grow.

Posted in: White Papers, Electronics, Data Acquisition, Sensors, Test & Measurement

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Introduction to Machine Vision

A guide to automating process & quality improvements Get the basics of how machine vision technology works and why it's the right choice for automating process and quality improvements. The Introduction to Machine Vision whitepaper is the first step to understanding, what is machine vision, what kind of problems does it solve, what components do you need to build a vision system, how to get the most out of your vision system, and more. Read this whitepaper to see why automated inspection is vastly superior to manual techniques.

Posted in: White Papers, Machine Vision, Machinery & Automation

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Boosting Machine Vision with Built-in FPGA Image Preprocessing

Since imaging processing tasks can consume major CPU resources in machine vision applications, increasing processing performance within size constraints is, accordingly, a common challenge for solution providers. The following discusses the efficacy of FPGA in addressing such performance shortcomings, presents the image processing tasks most suitable for FPGA, and compares the capabilities of CPU and FPGA in operation. A built -in FPGA image preprocessing solution supporting machine vision app lications is then presented.

Posted in: White Papers, Imaging, Optics, Photonics, Machinery & Automation, Robotics

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