IL:tvdSection/3.3

Automatic Schemaexport for Element tvdSection

Autoexport from the XML-Schema for element IL:tvdSection of railML® version 3.3      UML-visualization of IL
Documentation	A track vacancy detection (TVD) section reports train occupancy to the interlocking. This is a logical unit characterised by the delimiters of the section. Typically, a section is delimited by two insulated track joints or axle counters at the extremities. Sections with a switch or a crossing can have several such limits.
Subschema	interlocking
Parents*	tvdSections
Children	assetName (0..*), belongsToOperationalPoint (0..1), designator (0..*), elementState (0..*), hasCommand (0..*), hasDemarcatingBufferstop (0..2), hasDemarcatingTraindetector (0..*), hasExitSignal (0..2), hasIndication (0..*), hasResetStrategy (0..1), hasTrackElement (0..*), hasTrainNumberField (0..*)
Attributes: frequency: The frequency in Hertz used for the TVD section in case of a track circuit. Shall be zero for direct current. (optional; xs:decimal; minInclusive: 0; fractionDigits: 3), isBerthingTrack: True, if this section is part of a berthing track, i.e. track where trains may halt and change direction. Typically, an Interlocking assures that trains progress from section to section in an ordered sequence (aka. two/three phase release). This check would fail when a train changes direction. If this attribute is true, the interlocking doesn't carry out this check for this section. (optional; xs:boolean), partialRouteReleaseDelay: Delay time after which the section may be released for use in a new route (optional; xs:duration), residualRouteCancellationDelay: The delay after which the interlocking may clear a partial route left by an unusual train run. The timer starts running when the interlocking accepts the signal man request to clear the section (DE: Restfahrstrasse auflösen) or when the interlocking algorithm detects that the train has set back (automatic route release). (optional; xs:duration), technology: The technology used for the TVD section to detect the presence or absence of rail vehicles. (optional; xs:string; patterns: other:\w{2,}) Possible values: axleCounter: The TVD section is formed by axel counter detection points. trackCircuit: The TVD section is using track circuit equipment with insulated rail joints or virtual ones as delimiters., elementNumber: element number for internal referencing in the engineering data (optional; xs:nonNegativeInteger), id: the identifier of the object; this can be either of type xs:ID or UUID (obligatory; xs:ID); compare: Dev:Identities
*Notice: Elements may have different parent elements. As a consequence they may be used in different contexts. Please, consider this as well as a user of this wiki as when developing this documentation further. Aspects that are only relevant with respect to one of several parents should be explained exclusively in the documentation of the respective parent element.