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Determining an Effective Analog Sampling Rate

Q: How often should my equipment make measurements? A: This question often arises when people draft plans to automatically measure a physical quantity such as temperature, pressure, acidity, liquid level, and so on. You can approach this problem in several ways, from an educated guess to a mathematical analysis of your system. The examples that follow use temperature measurements because people measure temperature more than any other physical characteristic.

Posted in: Electronics & Computers, White Papers

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Analog Signal Conditioning for Accurate Measurements

By Jon Titus Q: Should I put some sort of circuit between my sensor and an analog-to-digital converter? A:Yes. You probably need some signal conditioning. The explanation below goes on for a bit, but stay with it and you'll understand what you need and why you need it. Before you make any connections, get the electrical specifications for the analog-to-digital converter (ADC) and for the sensor or sensors in your system. Let's assume the data-acquisition module uses a Maxim Integrated Products MAX197 12-bit ADC. This device can accept eight differential (2-wire) inputs or 16 single-ended (1-wire) inputs. Maxim's specifications show an input impedance of 21 kohms for single-ended inputs and 16 kohms for differential inputs.

Posted in: Test & Measurement, White Papers

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Products of Tomorrow: January 2015

The technologies NASA develops don’t just blast off into space. They also improve our lives here on Earth. Life-saving search-and-rescue tools, implantable medical devices, advances in commercial aircraft safety, increased accuracy in weather forecasting, and the miniature cameras in our cellphones are just some of the examples of NASA-developed technology used in products today.

Posted in: Manufacturing & Prototyping, Materials, Sensors, Products, Techs for License, Articles

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15 Questions to Ask About Circuit Protection for Wearable Electronics

Have you attended an electronics or design tradeshow lately? Have you visited a big-box retailer or browsed an online electronics vendor? If so, you’ve probably seen many examples of wearable technology, including smart glasses, clothing, wristwear, footwear, neckwear, and headbands. Wearable computing is one of the hottest consumer electronics trends on the market, with global sales expected to grow from $14 billion in 2014 to over $70 billion in 2024, according to IDTechEx.

Posted in: Electronics & Computers, Electronic Components, Power Management, Articles

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Design and Analysis Software Ensures Safety of Launch Vehicle Structures

NX‘and Teamcenter® software Siemens PLM Software Plano, TX 800-498-5351 www.siemens.com/plm One of ATK Aerospace Group’s current projects involves the Space Launch System (SLS). The SLS is the largest rocket ever built for entirely new human exploration missions beyond Earth’s orbit, and will take astronauts farther into space, eventually including missions to Mars. Its first flight is scheduled for 2017.

Posted in: Software, Computer-Aided Engineering (CAE), Articles, Application Briefs

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Tiny Camera Lets NASA Inspection Tool “See”

micro ScoutCam‘ 1.2 micro camera Medigus, Ltd. Omer, Israel 011 972 8646 6880 www.medigus.com NASA has incorporated the micro ScoutCam 1.2 into its Visual Inspection Poseable Invertebrate Robot (VIPIR) tool. VIPIR is a robotic, maneuverable, borescope inspection tool being tested as part of the Robotic Refueling Mission, an experiment on the International Space Station that has been demonstrating tools, technologies, and techniques for on-orbit satellite servicing since 2011.

Posted in: Cameras, Imaging, Robotics, Articles, Application Briefs

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Brainwave Monitoring Software Helps Distracted Minds

Software designed to help pilots stay attentive now improves workplace, school, and sports performance. Imagine moving an object using only your mind. Software company Unique Logic’s Time on Task exercise makes that possible, at least on a computer screen. The game is one of the company’s Play Attention educational line, and is designed to teach people how to sustain their attention in order to complete tasks. It involves getting a forklift operator to transport a stack of crates from the ground onto the back of a truck. Instead of using a remote control to dictate the action, you use your concentration — measured by sensors that detect patterns of brainwave activity — to induce the operator to complete the job.

Posted in: Software, Simulation Software, Articles, Spinoff

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White Papers

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