RKRavindra KumarC++/Qt · Embedded Systems
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Case study · DDC

Driver Desk Console for EMU / MEMU.

A driver-facing embedded control and monitoring application coordinating a large onboard ecosystem across passenger information, displays, CCTV, communications and supporting train subsystems.

Active platform700+ device environment

One console, train-wide operational context.

The DDC is more than a visual HMI. Its public-safe architecture shows dedicated modules for networking, serial communication, GPS/NMEA, database access, multimedia, VoIP, device monitoring, configuration and master/slave console coordination.

Large device ecosystemCoordination and monitoring across 700+ onboard devices.
GPS & route contextLive position transformed into operational route information.
Communication stackTCP/IP, UDP, serial interfaces, MQTT and VoIP-related integration.
Console coordinationMaster/slave DDC coordination with high-level availability handling.

Public architecture

DDC as an orchestration layer.

The diagram is intentionally abstract. It communicates system categories, not the real internal network topology.

GPS / Route
Driver HMI
↓
Driver Desk Console
↓
Passenger Info
Displays
CCTV / NVR
Communication
Train Interfaces