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Title: Simultaneously connecting devices through bluetooth smart
Authors : Rüst, Andreas
Gysin, Mirco
Müller, Andreas Daniel
Würms, Martin
Conference details: Embedded World Conference, Nürnberg, Germany, 25 - 27 February 2014
Publisher / Ed. Institution : Weka Fachmedien
Publisher / Ed. Institution: Nürnberg
Issue Date: 2014
License (according to publishing contract) : Not specified
Type of review: Peer review (Abstract)
Language : English
Subjects : Data logger; Wireless; Bluetooth Smart; Bluetooth Low Energy
Subject (DDC) : 004: Computer science
Abstract: Modern data loggers record and store large amounts of data from many different types of sensors. This enables their use in various applications to capture different measurands. However wireless access to the recorded data opens countless possibilities for novel and innovative applications, for example in the health monitoring of humans or livestock. In many of these applications a central device connects simultaneously to several data loggers. This paper discusses the experiences made during the design, implementation and test of an energy efficient wireless interface to a data logger. The implemented system serves as an application example for Bluetooth Smart. It allows a user to monitor ongoing measurements of several data loggers through a smartphone. Additionally the recorded data of several loggers can be simultaneously uploaded to a central gateway. The available Bluetooth Smart chips and software stacks place limitations on usable bandwidth as well as on the number of simultaneous connections. Although most modern smartphones include hardware for Bluetooth Smart, implementations differ widely across platforms, thus creating additional effort for the app programmer. This paper presents measurement results and introduces the implemented approaches to optimize these parameters.
Departement: School of Engineering
Organisational Unit: Institute of Embedded Systems (InES)
Publication type: Conference Paper
DOI : 10.21256/zhaw-3706
Published as part of the ZHAW project : User-friendly health logger with wireless links and increased energy autonomy
Appears in Collections:Publikationen School of Engineering

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