CPU with Graphical Display Controller
The EKE-Trainnet® Central Processing Unit with Graphical Display Controller (CPG) manages train computers and connected subsystems.
Featuring an integrated graphical display controller, the EKE-Trainnet® CPG supports both analogue and digital displays and can also manage the display of video surveillance recordings. The EKE-Trainnet® CPG module is also capable of storing digital media content such as audio announcements in a compressed format for on-board use. The EKE-Trainnet® CPG can be used to develop, store and run applications for the control and diagnostics of on-board systems, making it suitable to develop Train Control and Management Systems or Vehicle Control Units. It can also implement Gateway functionalities by providing the necessary interfaces and routing capabilities.
Key Features
The Digital Signal Processor of the EKE-Trainnet® CPG is dedicated to video and audio processing. The Digital Visual Interface (DVI-I) combines both analogue and digital signals and can be directly connected to DVI displays with resolutions up to 1024 x 768 pixels. Touch screens can be connected either through an isolated RS 485 interface or a DVI cable when using EKE-Trainnet® Human Machine Interface (HMI). The audio interface line output can be used to drive audio announcement systems. The interface is isolated on the digital side to provide the best audio quality.
The CODESYS® PLC kernel embedded in the CPU acts as the CPU’s operating software. Train management applications can be developed with the CODESYS® PLC software in order to create the desired control and diagnostic functions of the train. The open platform runs on the Linux Operating Software and supports further software development in C language, either as a CODESYS® extension or on top of the module’s Linux kernel. The PowerPC processor provides enough processing power for demanding applications with 400 MHz core speed and 64 megabytes of 64-bit wide 100 MHz SDRAM.
Three programmable isolated asynchronous or bit-synchronous SCC channels are available (RS 485) for the connection to compatible devices in the train.
The EKE-Trainnet® CPG real-time clock is powered by a back-up capacitor and will run for a minimum of 30 days from the time power is no longer applied.
Two 10/100 Mbit/s Full Duplex Ethernet interfaces can be used to connect to any Ethernet Communication Network, typically connecting the CPG with switches or other electronic racks. The Ethernet interfaces can also be directly connected to any Ethernet enabled devices (e.g. network cameras). A bridge between two channels is also supported. The number of Ethernet interfaces can be increased with one of the EKE-Trainnet® Ethernet Switches.
The EKE-Trainnet® Portable System Tester (PST) interface (usually serial link or Ethernet) enables the use of the PST as well as other tools for event log operations, maintenance, debugging, downloading and application development purposes.
