|Increasing the Battery Life of Zigbee Nodes||| Print ||
|Written by Akiba|
|Wednesday, 19 March 2008|
The team at SICS released a paper documenting their research on increasing the battery life of Zigbee nodes . Currently, according to the Zigbee spec, Zigbee routers and coordinators need to be on and listening all the time which can be disastrous if you're not plugged into a wall outlet or powered by a car battery.
The paper describes an interesting approach where you introduce a power savings protocol (X-MAC) in between the 802.15.4 MAC layer and PHY layers. That way, the Zigbee network and application layers don't need to change and you get the power savings benefit. One of the researchers, Pablo Suarez, ported the Open-ZB stack from TinyOS to Contiki and implemented some mesh routing functionality to it to evaluate the X-MAC's power savings protocol. Their paper claims a 90% reduction in power consumption (or conversely a 1000% increase in battery life). The downside is that all devices on the network would need to support the X-MAC. But for a 10x battery life in a remote system, it might be worth it! This would be great for remote projects if they could reduce the power consumption and use some form of energy harvesting.
Here's the paper's abstract:
written by john12, January 30, 2009
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