TT:brakeUsage

brakeUsage
 

Scheme description / Schemenbeschreibung

Position of brakeUsage in the XML-Tree / Position von brakeUsage im XML-Baum

• Parent: <trainPartSequence>
• Children: <auxiliaryBrakes>

Multiplicity / Anzahl

[1..1]

Semantics / Bedeutung

The element brakeUsage defines the brake system for the whole train as a "fixed formation".

Attributes of brakeUsage / Attribute von brakeUsage

• brakeType: This names the type of brake producing the brake effort. According to the way of controlling the brake application one of the following values should be selected:

• none no brake at all
• compressedAir (pneumatic) brake system using compressed air to press the brake shoes onto the wheels or brake discs.
  "Druckluftbremse"
• vacuum brake system using vacuum in the control pipe. The brake shoes are pressed onto the wheels by means of athmospheric air pressure.
  "Saugluftbremse"
• handBrake manually applied brake by turning a handle or a lever which operates a gear/rod assembly with brake shoes
  "Handbremse"
• parkingBrake mainly spring applied brake used to keep a parking vehicle stationary
  "Feststellbremse"
• cableBrake brake applied by a cable running along the train
  "Seilzugbremse", z. B. Bauart Heberlein
• other:anything: Any value that does not fit any value from the previous enumeration list, fulfilling the constraint: at minimum two characters, whitespace is not allowed. Please, apply Dev:usingAny accordingly.
  brake applied by any other mechanism

• airBrakeApplicationPosition: This is the setting for the air brake application defining the time span for activation. Possible values are:

• N/A not applicable as brakeType is not compressedAir
• G slow activation, typical for freight trains or Merchandises
• P fast activation, typical for passenger trains with speed up to 120 km/h
• R rapid activation, typical for passenger trains with higher speed

• regularBrakeMass: This is the brake mass in metrical tons for normal brake operations of none-automatic brakes.

• regularBrakePercentage (introduced with version 2.5): This is the brake percentage related to brake mass for normal brake operations of none-automatic brakes.

• emergencyBrakeMass: This is the brake mass in metrical tons for emergency brake operations of none-automatic brakes. It differs from regular brake mass depending on auxiliary brakes.

• emergencyBrakePercentage (introduced with version 2.5): This is the brake percentage related to brake mass for emergency brake operations, differs from regular brake percentage depending on auxiliary brakes.

• maxDeceleration: This is the alternative specification of maximum possible momentary deceleration in metres per square second. Typically this value is achieved near standstill.

• meanDeceleration: This is the alternative specification of effective mean deceleration of a whole brake operation in metres per square second.
• brakePercentage

• regularBrakePercentage This should be used instead of the uncertain brakePercentage as specific value for the regular case.

• emergencyBrakePercentage This should be used instead of the uncertain brakePercentage as specific value for the emergency case.

• xs:anyAttribute: This provides an extension point for non-railML^® attributes in a foreign namespace. How to use it?

Syntactic Constraints / Syntaktische Beschränkungen

• brakeType: xs:rf-enumeration, mandatory

• airBrakeApplicationPosition: xs:rf-enumeration, optional

• regularBrakeMass: xs:decimal, 3 fraction digits, weight value measured in metric tons, optional

• regularBrakePercentage xs:integer, within the range of 6 and 225, brake percentage as value of braking performance in relation to vehicle weight, optional

• emergencyBrakeMass: xs:decimal, 3 fraction digits, weight value measured in metric tons, optional

• emergencyBrakePercentage xs:integer, within the range of 6 and 225, brake percentage as value of braking performance in relation to vehicle weight, optional

• maxDeceleration: xs:decimal, 3 fraction digits, acceleration value measured in m/s², optional

• meanDeceleration: xs:decimal, 3 fraction digits, acceleration value measured in m/s², optional

• brakePercentage optional

• regularBrakePercentage optional

• emergencyBrakePercentage optional

Best practice & Examples / Empfohlene Anwendung & Beispiele

Not yet described. / Noch nicht beschrieben.

Notes / Anmerkungen

Not yet described. / Noch nicht beschrieben.

Open issues / Offene Punkte/Pendenzen

Not yet described. / Noch nicht beschrieben.