Drayson releases Freevolt energy harvesting technology
30 September 2015
Lord Drayson, CEO and Chairman of Drayson Technologies has launched Freevolt, a novel energy harvesting technology that derives power from ambient radio waves.
The patented technology was developed by an international team from Drayson Technologies and Imperial College London, and is now commercially available for license to the international developer and business communities.
"Companies have been researching how to harvest energy from WiFi, cellular and broadcast networks for many years," says Lord Drayson. "But it is difficult, because there is only a small amount of energy to harvest and achieving the right level of rectifying efficiency has been the issue – up until now.
"With Freevolt, we have created something special. For the first time, we have solved the problem of harvesting usable energy from a small RF signal."
The Freevolt harvester comprises a multi-band antenna and rectifier, which is capable of absorbing energy from multiple RF bands at almost any orientation.
The small, lightweight design is scalable and suitable for a range of uses, from the ever expanding low-power Internet of Things, such as wearables, sensors and beacons, to built environments, with the potential to integrate Freevolt into the fabric of urban and industrial architecture.
The first commercial application of Freevolt technology is the CleanSpace Tag air sensor (illustrated), which is currently being manufactured in the UK and is now available for purchase.
This technology creates a crowd-sourced network of personal air sensors, initially across the UK and then expanding to major cities across the world, which will all be powered by Freevolt.
"Whether we live in a big city or an increasingly urbanised area in the developing world, radio frequency waves are being generated all around us, at different levels, all the time," says Lord Drayson. "Some of this wireless energy goes unused. At Drayson Technologies, we've figured out a way to make it useful. We call it Freevolt."
For more information, click here.