Towards the end of the charging of wearables with Freevolt?

The first technology capable of capturing waves in the air and transforming it into electricity was unveiled in London. Called Freevolt, this innovation could revolutionize the world of IoT, especially the use of low-energy wearables.

This energy, the funny electronic slice creates it from RF frequency waves emitted by radio, television, WIFI as well as wireless networks. These, present all around us, represent a endless power source for Freevolt, which will thus be able to create enough to perpetually charge the low-energy wearables. The device was presented by research and development company Drayson Technologies, who has a particular interest in energy, especially when the race for all-electric is concerned.

Three key components

According to Drayson, Freevolt is the first technology available on the market whose function is to power devices using ambient RF waves. For it, no dedicated transmitter is required. To work, the technology was designed with three important components : a multiband antenna which will scan what is around it to pick up RF waves from sources between 0.5 and 5 GHz, which will then be routed through a rectifier “Ultra-efficient”, responsible for transforming this energy into DC electricity. Finally a power management module boosts, accumulates and ultimately releases this energy.

Freevolt could therefore be the most efficient system in its class, but only for devices requiring very little energy. In an environment where many RF waves are emitted, a standard Freevolt unit can produce about 100 microwatts of power. This is still way too weak to operate a smartphone, however Drayson has a few use cases in mind.

Smoke detector and security camera powered

Society believes that Freevolt could be used, for example within the smart health connected house, sensor-based devices like smoke detectors could be powered by the device indefinitely without the need for a new battery. We can also imagine a similar case with a low power security camera. Drayson has created a product powered only by his invention: an air pollution monitoring called CleanSpace.

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The CleanSpace application uses data from 110 static sensors arranged around London to allow the creation of a pollution map of the capital. So users can know which areas to avoid during the day. The CleanSpace Tag is currently only available in the UK, thanks to a crowfunding campaign. One device costs £ 55 and although it is not very useful in France, the most hackers eager to see what Freevolt looks like more closely will still be able to pre-order it.

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