IfcRegularTimeSeries

IfcRegularTimeSeries

实体定义

在规则的时间序列中，数据以预定义的间隔可预测地到达。在常规时间序列中，不需要存储多个时间戳，因此分析时间序列的算法要简单得多。使用超类型中提供的开始时间，时间步长用于标识值列表的出现频率。

例如，烟雾探测器以固定速率（例如，每六秒）对空间中的颗粒浓度进行采样；控制系统每小时测量一次室外空气温度。

IFC2x2中的新实体。

Attribute definitio

#	Attribute	Type	Cardinality	Description	C
9	TimeStep	IfcTimeMeasure	[1:1]	A duration of time intervals between values.	X
10	Values	IfcTimeSeriesValue	L[1:?]	The collection of time series values.	X

 

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
IfcRegularTimeSeries
9	TimeStep	IfcTimeMeasure	[1:1]	A duration of time intervals between values.	X
10	Values	IfcTimeSeriesValue	L[1:?]	The collection of time series values.	X

 

EXPRESS Specification

ENTITY IfcRegularTimeSeries
 SUBTYPE OF (IfcTimeSeries);
  TimeStep : IfcTimeMeasure;
  Values : LIST [1:?] OF IfcTimeSeriesValue;
END_ENTITY;

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