Abstract
This paper describes the hardware requirements and design constraints that derive from unique features of body sensor networks (BSNs). Based on the BSN requirements, we examine the tradeoff between custom hardware and commercial off the shelf (COTS) designs for BSNs. The broad range of BSN applications includes situations where either custom chips or COTS design is optimal. For both types of nodes, we survey key techniques to improve energy efficiency in BSNs and identify general approaches to energy efficiency in this space.
Highlights
Overview of BSNsA confluence of advancements in diverse areas of research, including device integration, energy storage, sensor technology, and wireless communications, have facilitated the creation of body sensor networks (BSNs)
This paper describes the hardware requirements and design constraints that derive from unique features of body sensor networks (BSNs)
Most commercial FPGAs target high performance applications to compete with processors, but a sub-threshold FPGA [26] demonstrates that custom FPGA implementations can offer a good tradeoff for flexibility and energy efficiency for energy constrained applications like BSNs
Summary
A confluence of advancements in diverse areas of research, including device integration, energy storage, sensor technology, and wireless communications, have facilitated the creation of body sensor networks (BSNs). BSNs—networked body area sensor nodes that continuously capture objective. Measures off human phhysiology and m a perform mance both h inside andd outside oof traditionaal healthcarre s settings [1]—. The. T TEMPO p platform sennsor node integrates MEMS ineertial sensors (linear acceleration a n and rotatiional rate in i s six-degrees-of-freedom m), a mixedd-signal proocessor, Blu uetooth wirreless transsmission, an nd a lithium m b battery in a wearable w ennclosure. BSNs haave made a significantt impact in healthcare applicationns because of intrinsicc and uniquue c capabilities of the techhnology—networked body b area sensor nodees capture aand processs precise annd a accurate data continuoously and non-invasiv n vely. BSNss open new w horizons too healthcaree delivery, such technoology is helping to o define new w e entertainmen nt and wellnness applicaations in thee commercial space
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