Eco: Ultra-Wearable and Expandable Wireless Sensor Platform
BSN '06 Proceedings of the International Workshop on Wearable and Implantable Body Sensor Networks
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Current wireless sensor networks achieve dense deployment by low duty cycling. Unfortunately, this represents agreat mismatch with many real-world applications that require non-trivial data rates. To solve these issues above, we propose EcoDAQ, a new densely distributed wireless data acquisition systemwith a relatively high data rate.We implement a MAC layer protocol that minimizes complexity and memory footprint on the sensor node while guaranteeingcollision freedom, without using multiple frequency channels.As a result, this work is not onlyhighly scalable to at least 50 active nodes per squared meter,but at the same time the low complexity minimizes the cost ofthese ultra-compact sensor devices.The full demo would show a system deployment with a minimum of 50 active sensors on a poster board of 1 m^2 area. The monitoring station keeps gathering up to 500 accelerometer data samples per second from all of these 50 sensor nodes and displays them simultaneously on a fifty-screen tiled display system. A portable version that emulates the tiled screens in a reduced size will be shown at the conference.