Project Haystack definitions for Internet of Things
baseUri | https://project-haystack.org/def/phIoT/ |
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def | phIoT |
doc | See above |
includes | ph, phScience |
is | lib |
lib | phIoT |
version | 3.9.6 |
wikipedia | https://en.wikipedia.org/wiki/Internet_of_things |
absorption |
Cooling process using energy from heat source such as hot water |
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ac |
Relating to alternating current electricity |
ac-elec |
Alternating current electricity |
ac-elec-meter |
AC Electricity meter |
ac-freq |
Frequency of alternating current |
active |
Working, operative, effective |
active-power |
Active power or real power |
actuator |
Equipment to move or control a mechanism |
ahu |
Air Handling Unit |
ahuRef |
AHU which supplies air to an equipment or space |
ahuZoneDelivery |
AHU delivery method of conditioned air to the zone |
ahuZoneDeliveryType |
AHU delivery method of conditioned air to the zone |
airCooling |
Cooling by dissipating heat into the surrounding air |
airHandlingEquip |
HVAC equipment that conditions and delivers air via one or more fans |
airTerminalUnit |
Equipment in air distribution systems which terminate at the space |
apparent-power |
Apparent power is perceived magnitude of power due to the combination of active and reactive power |
area |
Area of a shape or floor space |
barometric |
Relating atmospheric pressure |
battery |
Equipment used to store electric energy |
blowdown |
Removal from container or pipe |
blowdown-water |
Water expelled from a system to remove mineral build up |
boiler |
Equipment to generate hot water or steam for heating |
bypass |
Pipe used to bypass an equipment |
cav |
Constant air volume terminal unit |
centrifugal |
Compression via a continuous flow of fluid through an impeller |
chilled |
Cooled |
chilled-water |
Water used for HVAC cooling |
chilled-water-coil |
Coil used to transfer heat from air to chilled water |
chilled-water-plant |
Plant used to generate chilled water for cooling |
chilledBeam |
Conditions a space using a heat exchanger integrated into the ceiling |
chilledBeamZone |
AHU supplies air to chilled beam terminal units |
chilledWaterCooling |
Cooling using transfer of heat to chilled water |
chilledWaterPlantRef |
Plant which supplies chilled water to the entity |
chiller |
Equipment to remove heat from a liquid |
chiller-absorption |
Cooling process using energy from heat source such as hot water |
chiller-centrifugal |
Compression via a continuous flow of fluid through an impeller |
chiller-reciprocal |
Piston compressor driven by a crankshaft |
chiller-rotaryScrew |
Rotary screw compression |
chillerMechanism |
Primary mechanism of chiller |
chillerMechanismType |
Primary mechanism of chiller |
closedLoop |
Working fluid is kept separate from fluid used for heat transfer into the atmosphere |
cmd |
Point is a command, actuator, AO/BO |
coil |
Heat exchanger used to heat or cool air |
coldDeck |
Duct carries air for cooling |
condenser |
Device or related to process of condensation |
condenser-water |
Water used used to remove heat through condensation |
condenserCooling |
Removal of heat through the process of water condensation |
conduit |
Duct, pipe, or cable to convey a substance or phenomenon |
controls |
Associated with the control system for an industrial process |
conveys |
Equipment conveys a substance or phenomenon |
cooling |
Cooling mode or process |
coolingCapacity |
Measurement of a chiller ability to remove heat measured |
coolingCoil |
Coil used to cool air |
coolingLoop |
Open or closed loop |
coolingOnly |
Device without heating |
coolingOnly-vav |
Cooling only VAV without fan or reheat |
coolingProcess |
Processed used to cool a substance |
coolingProcessType |
Processed used to cool a substance |
coolingTower |
Equipment to transfer waste heat into the atmosphere |
cools |
Equipment removes heat from a substance |
crac |
Computer Room Air Conditioner |
cur |
Supports current value |
cur-point |
Point with support to report a "real-time" current value |
curErr |
Error description when curStatus indicates error condition |
curStatus |
Status of point's current value reading |
curVal |
Current value of a point |
current-angle |
AC current phase angle |
current-imbalance |
Current phase imbalance in a multiphase AC system |
current-magnitude |
Magnitude of electrical current |
current-thd |
Total harmonic current distortion |
damper |
Damper equipment or control point |
damper-actuator |
Actuator to regulate the flow of air |
dc |
Relating to direct current electricity |
dc-elec |
Direct current electricity |
dc-elec-meter |
DC Electricity meter |
dehumidifies |
Equipment removes moisture from air to decrease humidity |
directZone |
AHU supplies air directly to the zone |
discharge |
Duct with air leaving an equipment |
domestic |
For human use |
domestic-water |
Tap water for drinking, washing, cooking, and flushing of toliets |
drive |
Related to the drive control of a motor |
drive-freq |
Motor frequency measured in "Hz" |
drive-speed |
Motor speed measured in "%" |
dualDuct |
Two ducts |
duct |
Conduit used to convey air for HVAC |
ductConfig |
Ductwork configuration |
ductConfigType |
Ductwork configuration |
ductDeck |
Cold, hot, or neutral deck |
ductDeckType |
Cold, hot, or neutral deck |
ductSection |
Equipment section of ductwork |
ductSectionType |
Equipment section of ductwork |
dxCooling |
Cooling using direct expansion of a refrigerant vapar |
effective |
Current control setpoint in effect taking into account other factors |
elec-coil |
Heating element which converts electricity into heat |
elec-meter |
Electricity meter |
elec-panel |
Physical housing for electrical circuits, fuses, and breakers |
elecHeating |
Heating by the conversion of electrical energy |
elevator |
Enclosure used to move people between floors |
enable |
Secondary on/off point of an equip especially used with a vfd |
entering |
Pipe conveys fluid into an equipment |
equip |
Equipment asset |
equipFunction |
Models one of the primary functions of an equipment type |
equipRef |
Reference to equip which contains this entity |
escalator |
Moving staircase used to move people between floors |
exhaust |
Duct used to expel air back outside |
fan |
Fan equipment or control point |
fan-motor |
Motor used with a fan to create air flow |
fanPowered |
Device with a fan |
fanPowered-vav |
VAV contains a fan with reheat |
fcu |
Fan Coil Unit |
floor |
Storey of a building |
floorNum |
Unitless integer indicating the floor's distance from ground level |
flow-meter |
Meter to measure flow rate and total volume of fluid |
fuelOil |
Petroleum based oil burned for energy |
fumeHood |
Ventilation equipment to limit exposure to hazardous fumes |
gasHeating |
Heating by the combustion of natural gas |
gasoline |
Petroleum derived liquid used as a fuel source |
ground |
Related to the surface of the earth |
ground-floor |
Floor at ground level |
heatExchanger |
Equipment to transfer heat between two working fluids |
heatPump |
Heat pump |
heating |
Heating mode or process |
heatingCoil |
Coil used to heat air |
heatingProcess |
Processed used to heat a substance |
heatingProcessType |
Processed used to heat a substance |
heats |
Equipment heats a substance |
his |
Supports historization of data |
his-point |
Historized point with a history log of timestamp/value pairs |
hisErr |
Error description when hisStatus indicates error condition |
hisMode |
Indicates the way that history data is collected for a point |
hisStatus |
Status of point's history collection or synchronization |
hisTotalized |
Indicates values which are a continuous stream of totalization |
hot |
Having high degree of heat |
hot-water |
Hot water used for HVAC heating or supply to hot taps |
hot-water-boiler |
Boiler which outputs hot water |
hot-water-coil |
Coil used to transfer heat from hot-water to air |
hot-water-plant |
Plant used to generate hot water for heating |
hotDeck |
Duct carries air for heating |
hotWaterHeating |
Heating using energy of hot water |
hotWaterPlantRef |
Plant which supplies hot water to the entity |
humidifies |
Equipment adds moisture to air to increase humidity |
hvac |
Heating, ventilation, and air conditioning |
hvac-zone-space |
Zone related to conditioning of a space's air temperature and quality |
imbalance |
Lacking balance |
inlet |
Duct with air entering an equipment |
leaving |
Pipe conveys fluid out of an equipment |
lighting |
Systems associated with illumination in the built environment |
lighting-zone-space |
Zone related to lighting system |
luminaire |
Light fixture using electricity to provide illumination |
makeup |
Restore soemthing missed or lost |
makeup-water |
Water used used to makeup water loss through leaks, evaporation, or blowdown |
mau |
Makeup Air Unit |
meter |
Equipment to meter a substance or phenomenon |
meterScope |
Classifies a meter as a main site meter or submeter |
meterScopeType |
Classifies a meter as a main site meter or submeter |
mixed |
Duct where fresh outside and return air is mixed together |
motor |
Equipment that converts electrical energy into mechanical energy |
moves |
Equipment moves a substance |
movingWalkway |
Conveyor to move people across a horizontal or inclined plane |
multiZone |
AHU discharge air is split into a duct per zone |
naturalGas |
Fossil fuel energy source consisting largely of methane and other hydrocarbons |
neutralDeck |
Duct carries air which by-passes both heating and cooling coils |
occ |
Occupied mode of a space |
occupants |
People who use the built ennvironment |
occupied |
Setpoint or sensor indicating occupancy of a space |
oilHeating |
Heating by the combustion of fuel oil |
openLoop |
Uses working fluid itself for evaporation into the atmosphere |
outside |
Duct to access fresh outside air |
panel |
Enclosure for electrical and control equipment |
parallel |
Circuit with multiple paths of flow |
pf |
Electrical power factor |
pipe |
Conduit used to convey a fluid |
pipeSection |
Equipment section of piping |
pipeSectionType |
Equipment section of piping |
plant |
Central plant used to generate a substance for a process |
point |
Data point such as a sensor or actuator |
pointFunction |
Classifies the point as a sensor, command, or setpoint |
pointFunctionType |
Classifies the point as a sensor, command, or setpoint |
pointQuantity |
Quantity the point senses or controls |
pointSubject |
What the point senses or controls |
pressureDependent |
VAV damper modulates to control space temp |
pressureIndependent |
VAV damper or a control valve that modulates to maintain desired flow setpoint |
primaryFunction |
Primary function of building as US Energy Star key |
process |
Industrial or HVAC process |
processUses |
Input to a process, usually energy source |
pump |
Pump equipment or control point |
pump-motor |
Motor used with a pump to move fluid |
radiantEquip |
HVAC equipment that conditions a space without forced air |
radiantFloor |
Heats a space using pipes or cables embedded beneath floor |
radiator |
Heats a space using exposed pipes or coils |
reactive |
Relating to reactance |
reactive-power |
Reactive power or imaginary power |
reciprocal |
Piston compressor driven by a crankshaft |
refrig |
Fluid used in refrigeration and heat exchange |
regulates |
Equipment regulates the flow of substance or phenomenon |
reheats |
Equipment heats a substance previously cooled or heated |
return |
Duct returning air back to equipment |
roof |
Envelope covering the top of a building |
roof-floor |
The roof floor is the topmost level of a building |
room |
Enclosed room of a building |
rotaryScrew |
Rotary screw compression |
rtu |
Roof Top Unit |
run | |
sensor |
Point is a sensor, input, AI/BI |
series |
Circuit with single path of flow |
singleDuct |
One single duct |
site |
Site is a geographic location of the built environment |
siteMeter |
Main meter for the associated site |
siteRef |
Reference to site which contains the entity |
sp |
Point is a setpoint, soft point, internal control variable, schedule |
space |
Space is a three-dimensional volume in the built environment |
spaceRef |
Reference to space which contains this entity |
stage |
Stage number of an AHU cooling or heating coil |
standby |
Readiness mode of a space |
state |
Software, hardware, or process control status |
stateQuantity |
What is sensed or controlled of software, hardware, or process state |
steam-boiler |
Boiler which outputs steam |
steam-coil |
Coil used to transfer heat from steam to air |
steam-plant |
Plant used to generate steam for heating |
steamHeating |
Heating using energy of steam |
steamPlantRef |
Plant which supplies steam to the entity |
stores |
Equipment stores a substance or phenomenon |
submeter |
Submeters measure usage of a sub-system or equipment within a site |
submeterOf |
Reference to parent meter which is immediately upstream of this meter |
subterranean |
Below the surface of the earth |
subterranean-floor |
Floor below ground level |
switch |
Device for toggling state or routing data |
tank |
Tank used to store a substance for temporary holding |
thd |
Total harmonic distortion |
thermal |
Related to energy of heat |
thermal-meter |
Meter to measure energy transfer via fluid |
thermostat |
Senses and controls temperature of space in HVAC system |
tripleDuct |
Three ducts |
unitVent |
Unit Ventilator |
unocc |
Unoccupied mode of a space |
valve |
Valve equipment or control point |
valve-actuator |
Actuator to regulate the flow of fluid |
vav |
Variable air volume terminal unit |
vav-parallel |
VAV pulls air from outside the primary air flow |
vav-series |
VAV pulls air from the primary air flow |
vavAirCircuit |
How does the VAV pull in air |
vavAirCircuitType |
How does the VAV pull in air |
vavModulation |
How does VAV modulate the temp based on duct pressure |
vavModulationType |
How does VAV modulate the temp based on duct pressure |
vavZone |
AHU supplies air to VAV terminal units |
ventilates |
Equipment brings fresh outside air into a space |
verticalTransport |
Equipment to move humans and materials |
vfd |
Motor with variable frequency drive |
volt-angle |
AC voltage phase angle |
volt-imbalance |
AC voltage phase imbalance |
volt-magnitude |
Magnitude of electrical voltage |
weatherRef |
Reference to weather station for to use this entity |
weatherStation |
Logical weather station and its measurement points |
wire |
Cabling used to convey electricity or data |
writable |
Supports writing data |
writable-point |
Point with writable output using 16-level priority array |
writeErr |
Error description when writeStatus indicates error condition |
writeLevel |
Current priority level for writeVal as number between 1 and 17 |
writeStatus |
Current status of a writable point output |
writeVal |
Current desired value to write to output |
yearBuilt |
Original year of construction as four digit year such as 1980 |
zone |
Related to spaces from a system perspective |
zone-space |
Space associated with a specific system |