PHOTO Courtesy of Michigan State University Nizar Lajnef installs a battery-less, vibration-powered sensor to record asphalt cracking, creating a data time line of its breakdown. Related Links: How Sensors on I-10 Twin Span Bridge Reduce Unknowns Bridge Owners Toolbox: Sensors, Gauges, Radars, Models Researchers are testing novel infrastructure-monitoring sensors on roads. The new sensors are powered by passing vehicles.The test could address a major flaw in sensors that are embedded to monitor degradation of infrastructure: They lose power, says Nizar Lajnef, assistant professor of civil and environment engineering at Michigan State University."Battery-powered sensors last only two to three years, max,"
The 2016 Summer Olympics boating and swimming events have put an international spotlight on what has been a long-running problem in Rio de Janeiro—untreated sewage and trash are clogging up major bays and waterways.