Precise infrastructure modelling

Unlike other tools, Villon's infrastructure model is not based on a simplified (schematic) approach. Villon's infrastructure model is accurate and respects all important physical properties (such as shape, length, diameter or slope) of infrastructure elements (e.g. tracks or roads). The required data can be obtained directly from a CAD data format or simply imported from OpenRailwayMap. However, if such precise information is not available, the schematic definition of infrastructure elements can always be used.

A special editor is available for further editing and correction of the infrastructure. The infrastructure model also contains information on signalling equipment and ancillary structures such as buildings, platforms, retarders, etc. 
 
In order to support 3D visualisation, the infrastructure model can be extended with additional required data (e.g. heights of elements, terrain shape).

Individual modelling of resources

Villon's modelling of resources is not limited to infrastructure only (as many other tools are), but allows individual (single entity level) modelling of both stationary (infrastructure, storage) and mobile resources (e.g. personnel, engines, trucks). Resources are modelled individually, taking into account their working hours, occupations and other characteristics. 

 
The status, position and utilisation of resources can be inspected at any time during the simulation run (using automatically updated live inspectors) or afterwards using post-simulation statistical reports.

Detailed and flexible modelling of the operation

The definition of operational procedures in Villon is realised by means of network graphs (flowcharts, also called technologies) assigned to each customer of the system (e.g. train, truck). Flowcharts are composed of activities, which represent individual tasks to be performed during customer service (e.g. moving, loading, resource allocation, brake testing, technical inspection, etc.). Villon contains a set of predefined template activities, covering the whole range of functions found in the operation of transport terminals. Each activity has a distinct set of parameters and resources required for its execution. The sequence and interdependence of these activities in a service process is defined by the form of the flowchart. 

During simulation run Villon provides the presentation of the current state of the service; colour coding makes it possible to distinguish between activities that have already been performed, activities that are currently being performed and activities that will be performed in the future. Villon also offers a set of post-execution reports that allow analysis of executed procedures, e.g. PERT analysis or critical path visualisation.

Microscopic modelling of transport processes

When it comes to modelling transport processes, Villon goes down to the microscopic level. Vehicle movement is modelled by continuous simulation using differential equations. The calculation takes into account the power characteristics of the engine as well as the parameters of the infrastructure on which the vehicle is travelling (e.g. curve diameter, gradients, maximum speed allowed, etc.). 

 
The traffic rules are also strictly adhered to - trains respect track occupancy, the interlocking system (e.g. 3-sign, 4-sign automatic blocking system) and signal positions, cars obey the traffic rules, etc.

Modelling of multimodal systems

Villon's modelling capabilities cover rail, road and special transport modes (e.g. cranes), respecting their different characteristics. In a single simulation model, all supported modes can be combined to evaluate their mutual interactions (e.g. blocking of road crossings by trains, occupation of shared unloading slots by trucks). This makes it possible, for example, to completely model the transport processes within a production facility, including the operation of the factory sidings (trains, locomotives), road traffic (lorries, forklifts, cars) and also other transport (AGVs, cranes, conveyor belts).

Extensive evaluation possibilities

In addition to the detailed interactive 2D or 3D run-time animation of most simulated processes, Villon offers (during the simulation run) several tools to explore the attributes of simulation entities (status of resources, positions of trains, cars, etc.). 

 
After the simulation run, a very extensive set of post-simulation evaluations is available - these are based on the detailed simulation log recorded during the simulation run. In addition to graphical presentation of simulation results using time-dependent reports on resource utilisation, waiting times, etc., statistical evaluations are also provided in the form of tables, graphs and charts (including PERT analysis of flowcharts describing operational procedures, resource utilisation statistics and many others). 
 
Villon also offers the possibility to export all collected information to an XLS or CSV file for further processing with a spreadsheet editor.


Modelling of storage systems and passenger transport

Villon supports the modelling of storage systems found in production facilities, warehouses, logistics centres and other transport systems. 

Although this is not Villon's primary focus, zonal storage, material storage or automated storage systems can be modelled to complement simulation models of transport logistics terminals. 

The modelling of passenger transport is no problem either - the occupancy rate of vehicles (train, tram or bus), the required capacity of stations, platforms or bus stops, as well as the number of passengers transported in a given period of time can be easily investigated using Villon's support for modelling storage systems. 

2D and 3D animation of simulated processes

Animation of the modelled transport processes as well as other service processes (e.g. brake testing) during the simulation run is an integral part of Villon. 

 
The animation can be presented in a top view 2D or 3D environment. The environment is fully interactive (mouse object picking) and freely explorable (any camera position or viewing angle; even driving on vehicles is possible). 
 
In addition to detailed infrastructure and vehicle models, the scene can be enhanced with models (created in external tools) of station interiors, buildings, terrain, signs, signals and trees.