Appareil de communications

A communications appliance transmits and receives electronic or digital information as data or sound.

Communication appliances may be fixed in place or may be able to be moved from one space to another. Communication appliances require an electrical supply that may be supplied either by an electrical circuit or provided from a local battery source.

HISTORY  New entity in IFC4

Common Use Definitions

The following concepts are inherited at supertypes:

 Instance diagram

Object Typing

The Object Typing concept applies to this entity as shown in Table 342.

Table 342 — IfcCommunicationsAppliance Object Typing

Property Sets for Objects

The Property Sets for Objects concept applies to this entity as shown in Table 343.

Table 343 — IfcCommunicationsAppliance Property Sets for Objects

Quantity Sets

The Quantity Sets concept applies to this entity as shown in Table 344.

Table 344 — IfcCommunicationsAppliance Quantity Sets

Material Constituents

The Material Constituents concept applies to this entity as shown in Table 345.
CasingMaterial from which the casing is constructed.

Table 345 — IfcCommunicationsAppliance Material Constituents

Object Aggregation

The Object Aggregation concept applies to this entity as shown in Table 346.
COMPUTERIfcAudioVisualApplianceComputers may be aggregated into audio-visual components such as displays, cameras, speakers, or microphones.

Table 346 — IfcCommunicationsAppliance Object Aggregation

Port Nesting

The Port Nesting concept applies to this entity as shown in Table 347.
ANTENNAPowerSINKELECTRICALReceives electrical power.
ANTENNARadioSINKSIGNALElectromagnetic waves.
ANTENNASignalSOURCESIGNALThe modulated analog signal in a circuit, such as a cable connected to a modem.
COMPUTERPowerSINKELECTRICALReceives electrical power.
COMPUTERNetworkSINKDATAA network connection, may be wired or wireless (implicit antenna), such as a cable connected from a data outlet jack or from a router communications appliance. While communication is bidirectional, the router-end is considered to be the source.
COMPUTERDeviceSOURCECONTROLA device connection such as USB or serial, which may connect to equipment such as a building automation controller.
COMPUTERDisplaySOURCEAUDIOVISUALAudio/video output, such as a cable connected to a display, which may be aggregated into separate channels.
FAXPowerSINKELECTRICALReceives electrical power.
FAXPhoneSINKTELEPHONETelephone connection.
MODEMPowerSINKELECTRICALReceives electrical power.
MODEMSignalSINKSIGNALModulated analog signal, typically a cable connecting from a communications junction box or an antenna.
MODEMInternetSOURCEDATAInternet data network.
MODEMTelevisionSOURCETVTelevision modulated signal.
MODEMTelephoneSOURCETELEPHONETelephone communications.
PRINTERPowerSINKELECTRICALReceives electrical power.
PRINTERNetworkSINKDATAA network connection, may be wired or wireless.
PRINTERPhoneSINKTELEPHONETelephone connection for fax support.
REPEATERPowerSINKELECTRICALReceives electrical power.
REPEATERInputSINKSIGNALThe receiving signal.
REPEATEROutputSOURCESIGNALThe transmitted amplified signal.
ROUTERPowerSINKELECTRICALReceives electrical power.
ROUTERUplinkSINKDATAUplink from another network, such as a cable connected to another router or modem accessing the Internet.
ROUTERWiFiSOURCEDATAA wireless access point.
ROUTERLink#1SOURCEDATAA network link to a routed device such as a cable connecting to a computer.
ROUTERLink#2SOURCEDATAA network link to a routed device such as a cable connecting to a computer.
ROUTERLink#3SOURCEDATAA network link to a routed device such as a cable connecting to a computer.
ROUTERLink#4SOURCEDATAA network link to a routed device such as a cable connecting to a computer.
ROUTERLink#5SOURCEDATAA network link to a routed device such as a cable connecting to a computer.
ROUTERLink#6SOURCEDATAA network link to a routed device such as a cable connecting to a computer.
ROUTERLink#7SOURCEDATAA network link to a routed device such as a cable connecting to a computer.
ROUTERLink#8SOURCEDATAA network link to a routed device such as a cable connecting to a computer.

Table 347 — IfcCommunicationsAppliance Port Nesting

XSD Specification:

 <xs:element name="IfcCommunicationsAppliance" type="ifc:IfcCommunicationsAppliance" substitutionGroup="ifc:IfcFlowTerminal" nillable="true"/>
 <xs:complexType name="IfcCommunicationsAppliance">
   <xs:extension base="ifc:IfcFlowTerminal">
    <xs:attribute name="PredefinedType" type="ifc:IfcCommunicationsApplianceTypeEnum" use="optional"/>

EXPRESS Specification:

ENTITY IfcCommunicationsAppliance
SUBTYPE OF IfcFlowTerminal;
PredefinedType : OPTIONAL IfcCommunicationsApplianceTypeEnum;
CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR (PredefinedType <> IfcCommunicationsApplianceTypeEnum.USERDEFINED) OR ((PredefinedType = IfcCommunicationsApplianceTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));

Link to EXPRESS-G diagram EXPRESS-G diagram

Formal Propositions:

CorrectPredefinedType : Either the PredefinedType attribute is unset (e.g. because an IfcCommunicationsApplianceType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED.
CorrectTypeAssigned : Either there is no communications appliance type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcCommunicationsApplianceType.

Inheritance Graph:

ENTITY IfcCommunicationsAppliance
GlobalId : IfcGloballyUniqueId;
OwnerHistory : OPTIONAL IfcOwnerHistory;
Name : OPTIONAL IfcLabel;
Description : OPTIONAL IfcText;
ENTITY IfcObjectDefinition
HasAssignments : SET OF IfcRelAssigns FOR RelatedObjects;
Nests : SET [0:1] OF IfcRelNests FOR RelatedObjects;
IsNestedBy : SET OF IfcRelNests FOR RelatingObject;
HasContext : SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions;
IsDecomposedBy : SET OF IfcRelAggregates FOR RelatingObject;
Decomposes : SET [0:1] OF IfcRelAggregates FOR RelatedObjects;
HasAssociations : SET OF IfcRelAssociates FOR RelatedObjects;
ENTITY IfcObject
ObjectType : OPTIONAL IfcLabel;
IsDeclaredBy : SET [0:1] OF IfcRelDefinesByObject FOR RelatedObjects;
Declares : SET OF IfcRelDefinesByObject FOR RelatingObject;
IsTypedBy : SET [0:1] OF IfcRelDefinesByType FOR RelatedObjects;
IsDefinedBy : SET OF IfcRelDefinesByProperties FOR RelatedObjects;
ENTITY IfcProduct
ObjectPlacement : OPTIONAL IfcObjectPlacement;
Representation : OPTIONAL IfcProductRepresentation;
ReferencedBy : SET OF IfcRelAssignsToProduct FOR RelatingProduct;
ENTITY IfcElement
Tag : OPTIONAL IfcIdentifier;
FillsVoids : SET [0:1] OF IfcRelFillsElement FOR RelatedBuildingElement;
ConnectedTo : SET OF IfcRelConnectsElements FOR RelatingElement;
IsInterferedByElements : SET OF IfcRelInterferesElements FOR RelatedElement;
InterferesElements : SET OF IfcRelInterferesElements FOR RelatingElement;
HasProjections : SET OF IfcRelProjectsElement FOR RelatingElement;
ReferencedInStructures : SET OF IfcRelReferencedInSpatialStructure FOR RelatedElements;
HasOpenings : SET OF IfcRelVoidsElement FOR RelatingBuildingElement;
IsConnectionRealization : SET OF IfcRelConnectsWithRealizingElements FOR RealizingElements;
ProvidesBoundaries : SET OF IfcRelSpaceBoundary FOR RelatedBuildingElement;
ConnectedFrom : SET OF IfcRelConnectsElements FOR RelatedElement;
ContainedInStructure : SET [0:1] OF IfcRelContainedInSpatialStructure FOR RelatedElements;
ENTITY IfcDistributionElement
HasPorts : SET OF IfcRelConnectsPortToElement FOR RelatedElement;
ENTITY IfcDistributionFlowElement
HasControlElements : SET [0:1] OF IfcRelFlowControlElements FOR RelatingFlowElement;
ENTITY IfcFlowTerminal
ENTITY IfcCommunicationsAppliance
PredefinedType : OPTIONAL IfcCommunicationsApplianceTypeEnum;

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