Introduction
Laxven has developed a rugged, multi-functional graphical display system designed to function as a human-machine interface (HMI) for locomotive operators. The system enables operators to view and investigate critical parameters, control the locomotive, record/retrieve data, and change user-settable parameters. It interfaces with the locomotive’s control system, allowing for real-time data display and fault event recording. The display is suitable for a wide range of locomotives, including Diesel, Electric, Metro, DEMU, and EMU locomotives, with configurations for 3-phase locomotives as per customer specifications.
This system is powered by the DC voltage available in the locomotive and supports voltage variations from 40V to 140V DC. It records event and fault data, which can be downloaded via a USB Pen Drive for analysis.
Salient Features
| Feature | Description |
| Display Type | 10.4 inch TFT LCD with sunlight-readable high brightness (1200 cd/m²) |
| Viewing Angle | 88° on both sides for better visibility |
| Fast Boot-Up | Boot time less than 5 seconds |
| Operating System | Crash-proof real-time OS, unaffected by power interruptions |
| Power Consumption | Ultra-low consumption: <10W at maximum brightness, <6W at nominal brightness |
| Brightness Adjustment | Auto/manual adjustment based on the environment |
| Rugged Keypad | IP65-rated, durable, with white backlight |
| Environmental Durability | Withstands shocks, vibrations, and extreme temperatures encountered in locomotives |
| Railway Compatibility | Complies with IEC 60571, IEC 61373, and IEC 61000 standards |
| Power Supply Range | 40V to 140V DC for compatibility with all Indian Railway locomotives |
| Protection Features | Reverse polarity, Over-voltage, Over-current, Short circuit protection |
| Communication Interface | Ethernet or MVB, ensuring flexibility for different systems |
| Data Recording & Downloading | Event and fault data can be downloaded via USB Pen Drive |
| Temperature Sensors | Includes a temperature sensor, brightness sensor, and health monitoring system |
Variants
| Variant | Specification | Communication Interface | Application |
| LAX-DIALS-12 | Developed as per RDSO specification MP.0.0400.10 (Rev-03) | Ethernet | Communicates with Siemens S7-300 Loco Computer |
| LAX-DDU-14 | Developed for 3-phase locomotives as per CLW specification CLW/ES/3/0487 | TCN/MVB | Communicates with Locomotive VCU via TCN/MVB protocol |
Technical specification
| Parameter | Details |
| Power Supply Voltage | 40V to 140V DC from loco battery (18V during cranking) |
| Power Consumption | < 10W @ maximum brightness, Typical: 6W |
| EMI/EMC and ESD Protection | Compliant with IEC 60571 and IEC 61000 |
| Other Protections | Reverse polarity protection, Short circuit protection |
| Operating System | Real-Time Crash-Proof Operating System |
| Single Board Computer | Quad-core processor with 8GB RAM |
| Display Size | 10.4” high brightness LCD display |
| Display Brightness | 1200 cd/m² |
| Display Resolution | 1024 x 768 |
| Keypad | 3 keypads with 28 keys, IP65-rated membrane tactile keypad, white backlit |
| Storage | Solid-state memory |
| Indications | 5mm Bi-color LED (Red & Yellow) |
| Monitoring Hardware | Health Monitoring System, Brightness Sensor, Temperature Sensor |
| Data Communication Ports | Ethernet, MVB, RS485, USB |
| Data Downloading Ports | USB Pen Drive |
| Display Brightness Control | Manual or Auto operation via brightness sensor (adjustable from 20% to 100%) |
| Temperature Range | -25°C to +85°C |
| Temperature Cutoff | 75°C (user settable) |
| Weight of Equipment | < 4 Kg |
| Enclosure IP Class | Front side: IP65, Rear side: IP52 |
