Location device works indoors with 10cm accuracy (Electronics Weekly)

Dublin-based wireless location chip firm Decawave has introduced its first ScenSor wireless device at an event hosted by Irish Prime Minister Enda Kenny.

The range-finding IC works by transmitting wireless signals to readers that use them to locate the tagged object to within 10cm. The device is based on the IEEE802.15.4a standard, which is an extension of the 802.15.4 ZigBee low power wireless comms standard. It supports data rates up to 27Mbit/s in a range up to 50 metres and locating accuracy of about +/- 10 cm. It is being proposed as an alternative to RFID and WiFi technology currently used for indoor tracking, where satellite-based GPS signals are unavailable.

 “Until now, 10cm location communications across close distances was not possible and current systems with metre-level accuracy have limited reliability,” said Ciaran Connell, CEO at Decawave. “More than 1,800 firms and institutes have expressed interest in implementing our technology for applications such as factory and building automation, agriculture, healthcare, ePOS and retail, and warehousing,” said Connell.

 Thales Communications & Security (TCS) develops applications for indoor location in emergency situations. “These deal with different environment types and especially those in severe non line-of-sight conditions, for which multipath fading is a primary concern. The results achieved with the Decawave IC are particularly good,” said Serge Hethuin, head of secured wireless products at TCS