Researchers at the University of Washington showcased a prototype called Wi-Fi Backscatter, an RF-powered computing device that can be embedded in various Internet of Things (Internet of Things). On the IoT device, it can also interact with other connected devices, and related applications are expected to accelerate the popularity of the Internet of Things.
The first feature of Wi-Fi Backscatter is that its power comes from the radio signals emitted by the surrounding equipment, such as television. Second, it can establish a connection to other Wi-Fi devices by reflecting/non-reflecting Wi-Fi signals. Although it does not generate a lot of power, its Wi-Fi connection method uses only a small amount of power less than 10μW, so it can support basic computing and connection capabilities. The current prototype can provide the highest per second within 2.1 meters. 1kb transmission capacity.
Researchers at the school said they imagined that such radio-powered devices could become wireless sensor nodes embedded in everyday objects. Shyam Gollakota, assistant professor of computer science and engineering at the University of Washington, pointed out that if IoT devices are about to take off, they must provide connectivity to billions of devices that can be embedded in everyday objects without batteries, Wi-Fi Backscatter processing Wi -Fi transmission consumes far less power than traditional Wi-Fi devices.
In related reports, researchers refer to this device as a "tag", meaning they want it to be transformed into a variety of sensors and can be directly embedded or integrated into various devices. Its Wi-Fi connectivity to receive information or deliver it to Wi-Fi devices such as laptops, tablets or smartphones.
According to Walton University, this technology allows engineers to extend their networks and computers beyond their inaccessible locations, without the need for batteries, and to make it easier for consumers to deploy sensors that control temperature or other services at home. And the cost is lower.
Researchers are preparing to showcase the technology at MOBICOM 2014, which was held in September this year. Gollakota also revealed that the research team is interested in setting up a company to commercialize Wi-Fi Backscatter.
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