System Design and Software Architecture of Traction Vehicle Control Computer

The overview of system design and software architecture of the distributed control computer (DCC) of an electric locomotive is presented. The DCC is organized as a local computer network with the master-slave node access method with a dual serial bus. User task activities in nodes are organized by the preemptive Real Time Operating System with dynamic planning or by simple static executive. Network communication services are uniformly used in all nodes to support reliable and user friendly transfer of process data inside DCC. The system design is based on criteria as functionality, reliability, fault tolerance and maintainability