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Energy expert Paul Scheckel and Kevin discussed ways to monitor energy usage around the house. The whole-house electrical monitoring system that uses the internet to provide a "dashboard" showing electrical usage is manufactured by: eMonitor by PowerHouse Dynamics
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Each layer offers its services in the form of primitives. Four
classes of primitives are defined as shown in Figure 1. Request is
issued by the layer that wants to get the services or the information
from another layer, and Confirm is the acknowledgment of the request.
Indication is the notification of the information to the layer that
requested the service, and Response is the acknowledgment of the
indication.
------------------------- -----------------------------
Request Response
|| / / ||
Layer N || || || ||
------------||------||--- -------||------||------------
|| || || ||
/ || || /
Layer N-m Confirm Indication
------------------------- -----------------------------
Figure 1: Interaction Model between Layers
What is ZigBee? What is IEEE 802.15.4? How is ZigBee different from other wireless standards (e.g. Bluetooth)? What are the real-life applications of ZigBee? How reliable is the data delivery? How long is the battery life? What are the cost considerations for ZigBee implementation? How long is the Transmission Range? How high is the Data Rate? What is the Data Latency for ZigBee Networks? How large/small a ZigBee Network can be? How is the Data Security provided? What is ZigBee Stack? What Subunits can be on a Node? What is called ZigBee Application? What are the ZigBee Device Descriptors? What is ZigBee Device Profile? What is ZigBee Stack Profile? What are the ZigBee Device Objects? How does a Device/Service Discovery process work? What are the Clusters, ZigBee Binding and Binding Table? How is Addressing and Messaging done in a ZigBee network? What types of ZigBee Devices exist in a network? What Topologies are supported by ZigBee? What is ZigBee network Gateway?
Zigbee/802.15.4 notes | http://www.google.com/notebook/public/17894154587286929730/BDReISgoQ0uGguawk
Sections:
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(1/2)Web: * Creating a Smart Energy Device Using Digi's xbee SE RF Module www.alcom.be By using the xbee SE module as part of a Smart Energy device, ... The From Google Receive:WED 9:26pm 09/23/09 (2/2)xbee Smart Energy firmware is a firmware load for xbee Series 2 RF module. This means ... View all results: http://m.google.com/u/AmuAXV From: Google Receive:WED 9:26 pm 09/23/09
When I push [my toaster] lever down, if there's a crumb stuck in the coils, it isn't long before my fragile pre-coffee state is shattered by the piercing siren of my smoke detector. It doesn't know about the toast, but really it should. If it were sociable, as soon as it detected particulate matter in the air, it would query the toaster to see if it had been activated. That would tell it that in all likelihood, it wasn't detecting an unattended, middle-of-the-night fire but instead a benign morning meal. The price of low-power radio networking and the just-minted funding for smart home energy networks makes this sociable smoke-detector scenario entirely within our reach. I want one.
Are there yet ZigBee products on the market?
Yes, there are. Some implement an actual ZigBee stack while others feature a ZigBee ready platform like EmberNet.
Examples in the residential space include Control4 (lighting), Eaton (home automation), Golden Power Manufacturing (sprinklers and thermostats), Hawking Technology (home gateways), Kalirel (heating), Mija (fire extinguishers), Nice (shutters), and TSC Systems (home automation).
Examples in the commercial space include Mija (fire extinguishers), Philips (lighting), Siemens (building automation), and TAC (building automation).
