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Roke Develops World's First Miniature Self-Charging Tracking Device


News provided by

Roke Manor Research Ltd

22 May, 2013, 08:00 BST

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ROMSEY, England, May 22, 2013 /PRNewswire/ --

Roke Manor Research Ltd (Roke), a Chemring Group company, has developed AGITATE, a self-charging miniaturised device which generates a radio signal that can be tracked up to an estimated 200 kilometres away.

AGITATE is currently the size of a five pence piece. A small dielectric is charged, and when shaken the tag generates a radio signal that can be tracked through walls and up to 20 kilometres in built-up areas, with an estimated range of 200 kilometres in free space. AGITATE requires no battery as shaking it converts mechanical energy into radio pulses, rather like a dynamo that uses mechanical energy to power bicycle lights.

Roke's research and design team anticipate that AGITATE could be produced for a few pence per unit and would have a broad range of tracking applications. Potential uses might include a low cost method of monitoring and regulating the use of lifejackets, with built in man-overboard capability; remote sensing for flood monitoring and alerts; in the industrial sector for remote sensing of motion and vibration fault detection in harsh environments; in the retail sector as security tags on high-value goods or in the healthcare sector for keeping track of patients, such as those suffering from dementia.

The research and development team has already completed UK trials across 26 kilometres of variable terrain. Further Roke investment is focussed on reducing AGITATE's footprint and increasing RF output power even further.

Peter Lockhart, Future Technology Manager for Roke, said: "As with many of the best inventions, AGITATE was developed by accident. But thanks to their highly inventive and creative minds, they recognised a potential application and have brought that to fruition, developing a simple yet highly usable technology."

About Roke http://www.roke.co.uk

Roke, based in Romsey, Hampshire, is the principal electronics research and development centre of Chemring Group Plc. Founded in 1956, Roke is one of the UK's leading suppliers of innovative solutions and contract R&D, pioneering developments in electronic sensors, networks and communications technology. It employs 450 staff and has over 430 patents to its name.

SOURCE Roke Manor Research Ltd

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