Melbourne, Jul 14 (PTI) Scientists have found a way to harvest renewable or ambient energy from mobile phone base stations or communication towers to power battery-operated wireless sensors used in many industries including health and agriculture.Lead researcher Salman Durrani from The Australian National University (ANU) said current wireless sensors for buildings, biomedical applications or wildlife monitoring use batteries which are often difficult to replace.In a first, researchers have accurately modelled how much energy it takes to sense and transfer information by wireless sensors.”A major problem hindering the widespread deployment of wireless sensor networks is the need to periodically replace batteries,” said Durrani.Wireless sensors are increasingly being used in many aspects of daily life. For example, sensors are used to measure temperature, wind speed, light, humidity and soil moisture to optimise the growth of grapes and prevent crop loss due to excessive heat or frost.Wireless sensors are used in various sports, such as rowing, to collect performance data from athletes. They are also used for condition monitoring of structures such as bridges and machinery in factories.The research found it was feasible to replace batteries with energy harvested from solar or ambient radio frequency sources such as communication towers or other mobile phone base stations, with communication delays typically limited to less than a few hundred milliseconds.Durrani said although the technology was years away, the research dealt with an important practical problem.”If we can use energy harvesting to solve the battery replacement problem for wireless sensors, we can implement long-lasting monitoring devices for health, agriculture, mining, wildlife and critical national infrastructure, which will improve the quality of life,” Durrani said. PTI MHN CPSadvertisement
Stories are posted on the APRN news page. You can subscribe to APRN’s newsfeeds via email, podcast and RSS. Follow us on Facebook at alaskapublic.org and on Twitter @aprnDownload AudioFour bills aimed at cutting state costs raise local concernsAndrew Kitchenman, KTOO – JuneauSenators introduced four new bills Monday that would require local governments and schools to pay more for pensions, end two college scholarship programs, and cut the amount that municipalities receive in state funding. Municipalities and schools are concerned about the effect on taxes and services.‘Huge anomaly’: warm winter limits sea-ice formation, experts sayTim Ellis, KUAC – FairbanksScientists say warm winter weather around the circumpolar north has led to another record-setting year of decreasing sea-ice coverage of the Arctic Ocean. As KUAC’s Tim Ellis reports, the extent of sea ice formed over this past winter was even smaller than the previous record-low extent set last year.Murkowski holds hearings to discuss public lands handlingRobert Hannon, KUAC – FairbanksU.S. Senator Lisa Murkowski is in Alaska holding field hearings as the chair of the Senate Energy and Natural Resources Committee. Monday she invited leaders from the state’s energy, mining and labor sectors to offer their perspectives on how the federal government is doing its job managing public lands.‘Gateways for Growth’: New plan to make Municipality more inclusiveAnne Hillman, KSKA – AnchorageThe Municipality of Anchorage is launching a new initiative to make the community and the economy more inclusive. The city received a grant to participate in the Gateways for Growth Challenge.Severed cable in Kansas hampers test grading in SitkaRobert Woolsey, KCAW – SitkaAlaska’s star-crossed educational testing system suffered another setback Tuesday when a fiber-optic cable near the University of Kansas was severed at about 10:30 this morning Alaska time.Ketchikan responders train for terrorismLeila Kheiry, KRBD – KetchikanAbout 33 law enforcement officers and first responders from 10 different federal, state and local agencies in Ketchikan recently came together for a two-day anti-terrorism training event. They learned how to be more aware of potential terrorism plots and, just as important, built inter-agency relationships.Russian and American officials sign wildlife management agreementEmily Russell, KNOM – NomeCooperation across the Bering Strait was strengthened last week when the US and Russia signed a joint wildlife agreement. Officials from the two Arctic nations met in San Diego to discuss polar bear and snow goose monitoring efforts in Alaska and Chukotka.Peninsula ‘Food Hubs’ set to launch in MayDaysha Eaton, KBBI – HomerFarmer’s markets are going virtual. Soon Kenai Peninsula residents will be able to buy locally grown food online. The new marketplaces are called ‘Food Hubs’.