Ph.D. - geht es zur Homepage der Informatik des Fachbereiches 3 ...
Ph.D. - geht es zur Homepage der Informatik des Fachbereiches 3 ...
Ph.D. - geht es zur Homepage der Informatik des Fachbereiches 3 ...
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11.3. Simulation Model<br />
sets the Boolean input “System on Power” (see Subsection<br />
10.2.1) by the SetDMIBooleanValue() function.<br />
The attribute Time is used to determine the elapsed<br />
time of 2000ms = 2s as a guard condition.<br />
Entering_Train_Data<br />
Ignoring_Optional_Data<br />
Acknowledging_Trip<br />
Acknowledging_Level_Transition<br />
Acknowledging_Mode_Transition<br />
Similar to “Powering_System”, this state is normally<br />
executed once to enter the static train data, like train<br />
length and static top-speed, in the ETCS Mode Stand<br />
By (modelled in Subsection 10.2.2).<br />
Any visible input field in the DMI that is not directly<br />
needed to be filled with data for the continuation of the<br />
simulation is marked as optional and is in the simulation<br />
simply ignored. An example for optional data is<br />
the activation of the override function in most ETCS<br />
Mod<strong>es</strong> [88, p. 42].<br />
This state is only used in the case that the EVC is in<br />
the Mode Trip (d<strong>es</strong>cribed in Subsection 10.2.6) and this<br />
has to be acknowledged by the driver to proceed.<br />
A transition to a new ETCS Application Level that is<br />
propagated to the EVC has always to be acknowledged<br />
by the driver, which is executed in this state.<br />
Similar to “Acknowledging_Level_Transition”, it can<br />
be nec<strong>es</strong>sary to acknowledge an explicit Mode switch.<br />
Since some stat<strong>es</strong> are also refined by a sub-state machine, those are introduced in the following<br />
paragraphs.<br />
11.3.2.1.1. Entering_Train_Data The static train data is entered in a simple sequence,<br />
which model is sketched in Figure 11.10. On the EVC side, this corr<strong>es</strong>ponds to the the “Start<br />
of Mission in Stand By” model in Subsection 10.2.2 and Figure 10.5.<br />
Each state in the simulation model sets a certain input value of the DMI. All transitions<br />
between the stat<strong>es</strong> are activated after 1.5s since a real driver neither can enter data in parallel<br />
nor without pause. The data entered in each state is roughly explained in the following:<br />
Entering_Driver_ID<br />
Entering_Train_Position<br />
The driver ID is a string for identifying the current<br />
driver, which is set as “ORA-SIM” for the simulative<br />
driver.<br />
The absolute train position can be set to another value<br />
than 0 if required. In the simulation, this is not nec<strong>es</strong>sary.<br />
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