Things/BACnet-Thing
(Redirected from PlugFests/Thing BACnet-Thing)
Unit Description
- 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.