View source for Things/BACnet-Thing

== Unit Description ==

[[File:BACnet-Thing.jpg|thumbnail]]

* '''Name:''' BACnet-Thing
* '''Picture:''' BACnet-Thing.jpg
* '''Logo:'''
* '''Hardware:''' Off-the-shelf DXR2 BACnet controller, KNX room unit, lighting controller, blinds controller, I/O board
* '''Software:''' BACnet firmware (DXR2) and ThingWeb-based BACnet IP to CoAP/HTTP gateway (Java)
* WoT functions:
** '''Role:''' Server only
** '''Protocols:''' CoAP, HTTP, BACnet IP
** '''Encodings:''' JSON, ASN.1
** '''Discovery:''' Automatic TD Repo registration and keep-alives
** '''Application logic:''' Exposing BACnet objects as (composed) Things

* The BACnet-Thing provides Properties to read the room temperature, air quality, and occupancy. There are Properties to read/write the temperature setpoint, control the lights, a fan, and a valve. Actions are used to control the blinds and run a temperature control loop. Events allow to subscribe to value changes and alarms. The gateway based on ThingWeb is application-agnostic and can discover any BACnet object. A BACnet and a building automation ontology is used to convert the discovered objects to Thing Description. All BACnet operations are provided as WoT interactions using a BACnet protocol binding, which is also used internally to proxy from BACnet to CoAP and HTTP.