The railway environment relies over several detection systems to provide a secure trans-
portation; some of these devices are the lateral wind detector, fallen object detectors,
weather stations, vertical impacts detector, among many others. Each device provides
particular functionalities and claims its own communication requirements.
Given the complexity of a telecontrol system, a homogeneous communication solution
supposes an improvement tool in terms of eficiency and future growth of the network,
allowing connection capability with open systems, supplier independence and reducing
installation and maintenance costs.
This project includes a classification of the detection systems in the railway environ-
ment to be aware of their complexity, in addition, issues related to remote systems and
transport SCADA protocols are summarized.
Further on the study, some general concepts related to this project's scenario must be
described to comprehend the communication between detection and control systems and
provide a standard solution for the communication of the current detection systems in the
railway environment.
Once analyzed the requirements, the solution that better suites characteristics such
as standardization, interoperability, scalability and extensibility is the IEC 60870-5-104
communication standard. To adapt this technology to the railway control environment a
data model specification was developed to integrate each particular detection protocol and
facilitates the development of the implementation to validate the communication between
the local operation points and the technical buildings.
The addressing architecture is described to take advantage of the protocol's bene-
fits, considering the necessary modifications in the control centres equipment according
to each addressing plan; also the database model created to adapt the information from
each detector studied previously to the desired standard will be described and finally the
applications developed as test model to validate the specification of the selected standard
for its use in railways detection systems are explained. |