| Forum: System Design |
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24. Sep 2008, 00:04 CET | Link |
HA needs an open and future proof
architecture, which handles the main problems of domotics :
- balkanization of the offering ( no standards ) - complexity - cost
KNX is not a real standard . Hager products do not interoperate easily with Merten products . KNX is complex to install . try ETS 3 , it is an awful experience !! Look at http://www.sirlan.com/en/tab-x.php , it is better !! KNX sensors are very expensive .
However, KNX is robust and works !!
I suggest to use 3 technologies to adress these issues
IPV6 from end to end ( 6lowpan from sensinode , http://www.sensinode.com/ )
xmpp to communicate with objects ( actuators , sensors ) look at http://www.openspime.org/what
OSGI to handle heterogeneous life cycle ( http://felix.apache.org/site/index.html )
A good start could be to have a look at the dog project, http://elite.polito.it/content/category/8/20/78/ or the homerun project ( http://code.google.com/p/homerun/ ).
An interesting ecosystem to play with is the z-wave one. Look at http://smart-home-blog.com/archives/1128 to get a linux taste of it.
I hope these comments will help .
This is not generally true, and there are a lot of installations to prove it. What problem did you have ?
While the stuff inter-operates at run-time I have found the configuration to be a proprietary mess, All vendor specific. The only is really runtime object sharing. It is good and it works but KNX is ultimately destined to be quickly superseded (10 years?).