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BACnet Logo Official Web Site of ASHRAE SSPC 135
AP WORKING GROUP
Applications
 
The goal of this group is to investigate the development of semantic information concepts and vocabularies suitable for building data of various application areas. This will extend the level of semantic information to include application concepts.
 
Status
 
This group is studying the concepts required for interoperability of semantic information. This is expected to provide a machine-readable way of providing semantic information on application concepts represented by building data.
 
For the work on proposed ASHRAE Standard 223P, "Semantic Tags for Building Data", the AP-WG has established collaboration with Brick Schema (https://brickschema.org/) for semantic graph concepts, and with Project Haystack (https://project-haystack.org/) for the vocabulary. ASHRAE 223P is mainly intended to standardize on concepts for semantic information, and the digital exchange of such information between machines. While multiple vocabularies may be used within 223P, it is beneficial to interoperability to use a standard vocabulary. Therefore, the Project Haystack vocabulary is foreseen to be included in 223P. Any vocabulary extension work is expected to be done in Project Haystack, within their community setup.
 
Subsequent to 223P work, the AP-WG will update draft Addendum 135-2016bo, which will specify how 223P is applied in BACnet objects, XDD device descriptions, and BACnet Web Services.
 
The need for, and future content of, draft Addendum 135-2016ap will be determined based on 223P and 135-2016bo. Draft Addendum 135-2016ap proposed a Structured View object-based approach for application profiles and interfaces, and was out for an Advisory Public Review some time ago. At this point, it is expected that application profiles will be defined through Project Haystack and in 223P compliant ways.
 
Convener: Bernhard Isler, Siemens