No More Batteries for Wireless devices (W/Video)


New Communication technique

New Communication technique

(Phys.org) —We might be one step closer to an Internet-of-things reality. University of Washington engineers have created a new wireless communication system that allows devices to interact with each other without relying on batteries or wires for power.

The new communication technique, which the researchers call “ambient backscatter,” takes advantage of the TV and cellular transmissions that already surround us around the clock. Two devices communicate with each other by reflecting the existing signals to exchange information. The researchers built small, battery-free devices with antennas that can detect, harness and reflect a TV signal, which then is picked up by other similar devices.

The technology could enable a network of devices and sensors to communicate with no  or  needed.

“We can repurpose  that are already around us into both a source of power and a communication medium,” said lead researcher Shyam Gollakota, a UW assistant professor of computer science and engineering. “It’s hopefully going to have applications in a number of areas including wearable computing, smart homes and self-sustaining .”

“Our devices form a network out of thin air,” said co-author Joshua Smith, a UW associate professor of computer science and engineering and of electrical engineering. “You can reflect these signals slightly to create a Morse code of communication between battery-free devices.”

Smart sensors could be built and placed permanently inside nearly any structure, then set to communicate with each other. For example, sensors placed in a bridge could monitor the health of the concrete and steel, then send an alert if one of the sensors picks up a hairline crack. The technology can also be used for communication – text messages and emails, for example – in wearable devices, without requiring battery consumption.

Groups of the devices were tested in a variety of settings in the Seattle area, including inside an apartment building, on a street corner and on the top level of a parking garage. These locations ranged from less than half a mile away from a TV tower to about 6.5 miles away.

They found that the devices were able to communicate with each other, even the ones farthest from a TV tower. The receiving devices picked up a signal from their transmitting counterparts at a rate of 1 kilobit per second when up to 2.5 feet apart outdoors and 1.5 feet apart indoors. This is enough to send information such as a sensor reading, text messages and contact information.

It’s also feasible to build this technology into devices that do rely on batteries, such as smartphones. It could be configured so that when the battery dies, the phone could still send text messages by leveraging power from an ambient TV signal.

The applications are endless, the researchers say, and they plan to continue advancing the capacity and range of the ambient backscatter communication network.

Read more at: http://phys.org/news/2013-08-wireless-devices-battery-free-technique.html#jCp

Advertisements

About Georges Abi-Aad

CEO, electronic engineer with MBA in marketing. Multicultural; French citizen born in Lebanon working in the Middle East and fluent in French, English and Arabic. I have more than 30 years of proven experience in the Middle East with European know how. I am good in reorganization and in Global strategic management business. I am a dependable leader with an open approach in working with people, forging a strong team of professionals dedicated to the Company and its clientele. Perseverance is my key word. Married to Carole and having 2 children: Joy-Joelle and Antoine (Joyante!).
This entry was posted in Electronics, Engineering, Green Energy, Green Technology, Media, Technology and tagged , , , , , , . Bookmark the permalink.

2 Responses to No More Batteries for Wireless devices (W/Video)

  1. Pingback: No More Batteries for Wireless devices (W/Video) - My Internet Of Things

  2. GreenSilent says:

    hmm this is intressting

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s