Hi, I just joined this group and I have looked through the existing documents. I did not find a project definition beyond the defining of "Tags" used in association with building automation systems(BAS) for identifying various building systems and equipment. My background has been in maintaining specifications for BAS installations and in commissioning of same for Public Works & Government Services Canada. This topic has been one of my ambitions for many years, having experienced the variance between BAS Techs even within the same company.
Can someone point me to the definition for the model?
Thank you
Winston
Brian FrankTue 17 May 2011
Hi Winston,
I am not sure I fully understand your question. Haystack is focused on defining a basic taxonomy or ontology for building automation energy and environmental systems. The goal is to lay the groundwork for how data can be modeled to enable data mining and analytics. We achieve modeling through the use of applying one or more tags to the "entities". Tags are the unifying mechanism for many different purposes:
model semantics such as this sensor is for sensing discharge temperature
relationships between entities (this VAV is supplied by this AHU)
modeling metadata such as units of measurement
So tags are the model/ontology. Haystack does not specify any database or protocol for what those entities are. We just assume that an entity is some piece of data with a unique identifier. Not sure that answers your question, if not would be glad to discuss further.
Winston Hetherington Tue 17 May 2011
Hi, I just joined this group and I have looked through the existing documents. I did not find a project definition beyond the defining of "Tags" used in association with building automation systems(BAS) for identifying various building systems and equipment. My background has been in maintaining specifications for BAS installations and in commissioning of same for Public Works & Government Services Canada. This topic has been one of my ambitions for many years, having experienced the variance between BAS Techs even within the same company.
Can someone point me to the definition for the model?
Thank you
Winston
Brian Frank Tue 17 May 2011
Hi Winston,
I am not sure I fully understand your question. Haystack is focused on defining a basic taxonomy or ontology for building automation energy and environmental systems. The goal is to lay the groundwork for how data can be modeled to enable data mining and analytics. We achieve modeling through the use of applying one or more tags to the "entities". Tags are the unifying mechanism for many different purposes:
So tags are the model/ontology. Haystack does not specify any database or protocol for what those entities are. We just assume that an entity is some piece of data with a unique identifier. Not sure that answers your question, if not would be glad to discuss further.