Home

Smart Buoy Measures Water Pollutants

The current way of using the multi-algae sensor; in the future, it will be operated automatically from buoys, together with other sensors. (Photo: bbe Moldaenke) Extensive water monitoring is indispensable for drinking water supply and water protection. Researchers have developed a smart monitoring system that combines various technologies in a depth-profile-measuring multi-sensor buoy for monitoring water bodies and algae growth. Conventional monitoring strategies are frequently based on a multitude of independently acting sensor systems. This aggravates and slows down integrated data evaluation.

Posted in: News, Measuring Instruments, Test & Measurement

Read More >>

Ultrasensitive Sensors Keep Driverless Cars Safer

Sensor chips are implemented in CMOS technology. (© Photo Fraunhofer IMS) News of the first serious accident involving an automated electric vehicle made headlines recently. Researchers are counting on light detection and ranging (LiDAR) technology, in combination with other components, to fulfill the requirements for independent steering, braking, and acceleration.

Posted in: News, Sensors, Test & Measurement

Read More >>

Military Sensor Inspires Instrument to Search for Life on Mars

This artist’s rendition shows how BILI could operate on Mars. (NASA) A sensing technique used by the U.S. military currently to remotely monitor the air to detect potentially life-threatening chemicals, toxins, and pathogens has inspired a new instrument that could “sniff” for life on Mars and other targets in the solar system.

Posted in: News, Data Acquisition, Detectors, Sensors, Measuring Instruments, Test & Measurement

Read More >>

NASA Measures Raindrop Sizes from Space

For the first time, scientists have three-dimensional snapshots of raindrops and snowflakes around the world, thanks to the joint NASA and Japan Aerospace Exploration Agency Global Precipitation Measurement (GPM) mission. With the new global data on raindrop and snowflake sizes, scientists can improve rainfall estimates from satellite data and numerical weather forecast models.

Posted in: News, Measuring Instruments, Monitoring

Read More >>

ORCA Prototype Ready to Observe Ocean

If selected for a NASA flight mission, the Ocean Radiometer for Carbon Assessment (ORCA) instrument will study microscopic phytoplankton, the tiny green plants that float in the upper layer of the ocean and make up the base of the marine food chain.Conceived in 2001 as the next technological step forward in observing ocean color, the ORCA-development team used funding from Goddard’s Internal Research and Development program and NASA’s Instrument Incubator Program (IIP) to develop a prototype. Completed in 2014, ORCA now is a contender as the primary instrument on an upcoming Earth science mission.The ORCA prototype has a scanning telescope designed to sweep across 2,000 kilometers (1,243 miles) of ocean at a time. The technology collects light reflected from the sea surface that then passes through a series of mirrors, optical filters, gratings, and lenses. The components direct the light onto an array of detectors that cover the full range of wavelengths.Instead of observing a handful of discrete bands at specific wavelengths reflected off the ocean, ORCA measures a range of bands, from 350 nanometers to 900 nanometers at five-nanometer resolution. The sensor will see the entire rainbow, including the color gradations of green that fade into blue. In addition to the hyperspectral bands, the instrument has three short-wave infrared bands that measure specific wavelengths between 1200 and 2200 nanometers for atmospheric applications.The NASA researchers will use ORCA to obtain more accurate measurements of chlorophyll concentrations, the size of a phytoplankton bloom, and how much carbon it holds. Detecting chlorophyll in various wavelengths also will allow the team to distinguish between types of phytoplankton. Suspended sediments in coastal regions could also be detected by the instrument.SourceAlso: Learn about a Ultra-Low-Maintenance Portable Ocean Power Station.

Posted in: News, Imaging, Optics, Photonics, Sensors, Measuring Instruments, Test & Measurement

Read More >>

Energy Harvesting Could Help Power Spacecraft of the Future

A consortium is working on a project to maximize energy harvesting on a spacecraft of the future. The initiative seeks to find energy-saving and -maximizing solutions to enable eco-friendly aircraft to stay in space for long periods of time without the need to return to Earth to re-fuel, or to avoid carrying vast amounts of heavy fuel on long-stay journeys.

Posted in: News, Aerospace, Aviation, Communications, Energy, Energy Efficiency, Energy Harvesting, Green Design & Manufacturing, Test & Measurement

Read More >>

NASA Robot Explores Volcanoes

Carolyn Parcheta, a NASA postdoctoral fellow based at NASA's Jet Propulsion Laboratory in Pasadena, California, and JPL robotics researcher Aaron Parness are developing robots that can explore volcanic fissures."We don't know exactly how volcanoes erupt. We have models but they are all very, very simplified. This project aims to help make those models more realistic," Parcheta said.Parcheta, Parness, and JPL co-advisor Karl Mitchell first explored this idea last year using a two-wheeled robot they call VolcanoBot 1, with a length of 12 inches (30 centimeters) and 6.7-inch (17-centimeter) wheels.VolcanoBot 2, smaller and lighter than its predecessor, will explore Hawaii's Kilauea volcano in March 2015. Parcheta's research endeavors were recently honored in National Geographic’s Expedition Granted campaign. SourceAlso: Learn about Autonomous Response for Targeting and Monitoring of Volcanic Activity.

Posted in: News, Machinery & Automation, Robotics, Measuring Instruments, Monitoring, Test & Measurement

Read More >>

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