Author: Site Editor Publish Time: 2025-11-21 Origin: Site
In modern rail transit systems, every smoothly operating train, every illuminated station, and every uninterrupted signalling system is backed by one critical foundation—high-reliability backup batteries. Yet more than half of global rail system backup power failures are caused by battery degradation.
With the rise of digital rail operations and 24/7 passenger expectations, traditional manual inspection is no longer sufficient. A fully distributed online battery monitoring system now enables operators to view every cell in real-time, predict failures earlier, and manage risks more intelligently.
1. Challenges Facing Global Rail Transit Backup Power
Shortened lifespan in hot and humid environments
Weakest-link effect: one aging cell reduces the entire string capacity
Heavy O&M workload for multi-station metro lines
Missing real-time data when relying solely on handheld measurements
2. The Solution: A Fully Distributed Online Monitoring Architecture
Acquisition Layer
Cell-level monitoring modules measure voltage, internal resistance, temperature, leakage, and electrolyte level at ±0.1% accuracy.
Communication Layer
One host supports multiple battery strings, performs SOC/SOH calculations, stores 5+ years of local history, and integrates via Modbus, CAN, RS485, or 4G.
Master Station Layer
Centralized monitoring across multiple lines with alarm notifications via desktop, SMS, email, or automated calls.
Advanced Technologies
Kelvin four-wire measurement for high-precision internal resistance
Auto-addressing to prevent wiring and commissioning errors
AI algorithms for early anomaly detection
3. Proven in International Rail Systems
This solution has demonstrated strong performance in various international applications, including:
Bangkok MRT (Thailand)
Adopted for underground station backup power, enabling 24/7 tracking of VRLA battery performance in high-humidity environments.
Santiago Metro (Chile)
Used to extend battery service life and reduce replacement costs through predictive maintenance alerts and long-term health analytics.
Moscow Metro (Russia)
Deployed in control centers to enhance reliability in extremely low-temperature environments, ensuring stable backup power for signalling systems.
These international cases demonstrate that the system adapts effectively to diverse climates, operational models, and rail infrastructures.
4. Benefits for Rail Operators Worldwide
Up to 90% reduction in battery-related failures
Immediate elimination of manual inspection blind spots
30–40% cost savings through early cell-level replacement
Strong alignment with global digital O&M standards
One-click reporting for audits and compliance requirements
5. Why Global Rail Systems Choose This Solution
Built for multi-station, multi-line metro networks
Compatible with SCADA, EAM, and remote O&M systems
Stable in extreme climates—from tropical Bangkok to sub-zero Moscow
Supports the global shift to predictive maintenance and digital transformation
Contact us for more infomation: info@dfuntech.com
