A power management architecture for sensor nodes
2007 (English)In: IEEE Wireless Communications & Networking Conference: WCNC 2007 ; 11 - 15 March 2007, [Hong Kong], Piscataway, NJ: IEEE Communications Society, 2007, 3008-3013 p.Conference paper (Refereed)
Wireless sensor nodes are a versatile, generalpurpose technology capable of measuring, monitoring and controlling their environment. Even though sensor nodes are becoming ever smaller and more power efficient, there is one area that is not yet fully addressed; Power Supply Units (PSUs). Standard solutions that are efficient enough for electronic devices with higher power consumption than sensor nodes, such as mobile phones or PDAs, may prove to be ill suited for the extreme low-power and size requirements often found on wireless sensor nodes. In this paper, a system-level design of a Power Management Architecture (PMA) is presented. The PMA is an integration of PSU hardware and various software components, and is capable of supplying a sensor node with energy from multiple sources, as well as providing status information from the PSU. The heart of the architecture is a context- and power-aware Task manager, which controls when the nodes low-power modes are activated, and is highly integrated with PSU hardware as well as other software components in the system. Its main responsibility is to schedule when energy consuming tasks can be dispatched. Depending on the task priority and system configuration, a task can be either dispatched, discarded or delayed. This approach ensures that only critical tasks will be allowed to use the battery, and that the system will be powered by renewable energy when performing other non-critical tasks.
Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2007. 3008-3013 p.
, IEEE Wireless Communications and Networking Conference. Proceedings, ISSN 1525-3511
Research subject Industrial Electronics; Embedded System
IdentifiersURN: urn:nbn:se:ltu:diva-38503DOI: 10.1109/WCNC.2007.557Local ID: cecc2920-1375-11dc-95f3-000ea68e967bISBN: 1-424-40658-7OAI: oai:DiVA.org:ltu-38503DiVA: diva2:1012004
IEEE Wireless Communications and Networking Conference : 11/03/2007 - 15/03/2007
Validerad; 2007; 20070605 (jench)2016-10-032016-10-03Bibliographically approved