Introduction to Project Haystack

Data types

Respresentation of timezones

Respresentation of units of measurement

Predicates for querying Haystack data

Overview of ontology

Sites entities

Systems entities

Synthetic data

Space entities including floors, rooms, and zones

Equipment entities

Point entities - sensors, actuators, and setpoints

Weather station entities

Device entities including controllers and networks

Modeling meters

Modeling air handling units

Modeling variable air volume terminal units

Modeling zone occupancy, hvac, air quality, lighting

Modeling central plants

Modeling fans, pumps, and other motors

Modeling electrical panels, circuits, and breakers

Modeling of Electric Vehicle Supply Equipment (EVSE)

Modeling variable refrigerant flow systems

Modeling aquifer thermal energy storage

Modeling data center spaces

Data encoding formats

Zinc plain text format

JSON format

Tag record I/O format

Comma separated valus format

Haystack HTTP API

HTTP API operations

HTTP API authentication

Version history

Notes for upgrading from version 3 to 4

Academic Free License 3.0