IfcTimeSeries

IfcTimeSeries

实体定义

时间序列是一组带有时间戳的数据项。它允许在一段时间内收集数据的自然关联。时间序列可以是规则的，也可以是不规则的。在常规时间序列中，数据以预定义的间隔可预测地到达。在不规则时间序列中，一些或所有时间戳不遵循重复模式，不可预测的数据突发可能会到达未指定的时间点。

建筑物及其性能的建模涉及在一段时间内生成和记录的数据。这些数据涵盖范围很广，从天气数据到各种日程安排，从状态测量到报告，再到与时间相关的一切。它们在时间上的正确放置对于正确理解和使用它们至关重要，IfcTimeSeries子类型提供了适当的数据结构来容纳这些类型的数据。

IFC2x2中的新实体。

Attribute inheritance

#	Attribute	Type	Cardinality	Description	C
IfcTimeSeries
1	Name	IfcLabel	[1:1]	An unique name for the time series.	X
2	Description	IfcText	[0:1]	A text description of the data that the series represents.	X
3	StartTime	IfcDateTime	[1:1]	The start time of a time series.	X
4	EndTime	IfcDateTime	[1:1]	The end time of a time series.	X
5	TimeSeriesDataType	IfcTimeSeriesDataTypeEnum	[1:1]	The time series data type.	X
6	DataOrigin	IfcDataOriginEnum	[1:1]	The origin of a time series data.	X
7	UserDefinedDataOrigin	IfcLabel	[0:1]	Value of the data origin if DataOrigin attribute is USERDEFINED.	X
8	Unit	IfcUnit	[0:1]	The unit to be assigned to all values within the time series. Note that mixing units is not allowed. If the value is not given, the global unit for the type of IfcValue, as defined at IfcProject.UnitsInContext is used.	X
	HasExternalReference	IfcExternalReferenceRelationship @RelatedResourceObjects	S[1:?]	Reference to an external reference, e.g. library, classification, or document information, that is associated to the IfcTimeSeries.	X

 

EXPRESS Specification

ENTITY IfcTimeSeries
 ABSTRACT SUPERTYPE OF(ONEOF(IfcIrregularTimeSeries, IfcRegularTimeSeries));
  Name : IfcLabel;
  Description : OPTIONAL IfcText;
  StartTime : IfcDateTime;
  EndTime : IfcDateTime;
  TimeSeriesDataType : IfcTimeSeriesDataTypeEnum;
  DataOrigin : IfcDataOriginEnum;
  UserDefinedDataOrigin : OPTIONAL IfcLabel;
  Unit : OPTIONAL IfcUnit;
 INVERSE
  HasExternalReference : SET [1:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjects;
END_ENTITY;

######################