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Personal alarm device: a case study in component-based design of embedded real-time software
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Computer Science.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
2011 (English)Conference paper, Oral presentation only (Other academic)
Abstract [en]

Designing software for embedded systems is complicated by such factors as the tight integration between software and hardware, scarceness of available resources, and hard real-time requirements. In our earlier work we proposed a component-based approach based on modeling both hardware and software using reactive objects and time-constrained reactions, which should allow us to overcome these difficulties. We also presented a software design methodology for embedded real-time systems.Here we describe a system developed using this methodology and discuss its advantages. The system is a personal alarm device that should be worn at the waist of a person and that should detect his or her fall and send an alarm signal. The implementation of the system was verified using a Simulink-based simulator. The simulation demonstrated that, even though calculation of acceleration was simplified to allow for an efficient execution on a resource-constrained platform, fall detection remained satisfactory.The case study demonstrates the advantages of the proposed software design methodology, including the fact that functional and timing properties of a system model can be preserved during implementation process by means of a seamless transition between a model and an implementation.

Place, publisher, year, edition, pages
2011.
Keyword [en]
component-based design, embedded system, real-time, reactive objects, reactive component, time-constrained reaction, Timber, Information technology - Systems engineering
Keyword [sv]
Informationsteknik - Systemteknik
National Category
Computer Sciences Embedded Systems
Research subject
Dependable Communication and Computation Systems; Embedded System
Identifiers
URN: urn:nbn:se:ltu:diva-32680Local ID: 73e705b7-a17c-46e7-950e-528d292f6d88OAI: oai:DiVA.org:ltu-32680DiVA: diva2:1005914
Conference
Real-Time in Sweden : 13/06/2011 - 14/06/2011
Note
Godkänd; 2011; 20110605 (jimmie)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

Open Access in DiVA

fulltext(1234 kB)80 downloads
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b1ddb604bb2ede52f772d04b90212e60017f450c16b83f36329d71dab1e554dad954609a04daa564824b077a7b7dcae5aebfe81f7e4d443f846ffe6c8192ee8b
Type fulltextMimetype application/pdf

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Wiklander, JimmieKruglyak, AndreyNordlander, JohanLindgren, Per

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CiteExportLink to record
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