Field-tested algorithms, alarm patterns, and operational practice for level crossing monitoring, IEC 61131-3 logic, and remote diagnostics. Written for asset managers, signalling engineers, and control-room operators.
What causes flasher faults, how to detect them remotely with a learning-based count-lamps algorithm, and the full alarm set.
Read guide → Level Crossing MonitoringHow warning time is calculated from approach and island detection, how to handle track circuits, predictors, and axle counters, and the alarm to raise when it falls short.
Read guide → Level Crossing MonitoringThe track fault alarms a monitoring system should raise on the approach and island, and how to handle shunting, predictors, axle counters, and track machines.
Read guide → Level Crossing MonitoringWhat batteries a level crossing has, how to monitor voltage and charger health remotely, and the alarms to raise across primary signalling, auxiliary, boom, and data logger banks.
Read guide → Points & Turnout MonitoringHow to read a point machine's drive-current signature remotely, trend throw time, detect obstructions and loss of correspondence, and use the data for machine-learning predictive maintenance.
Read guide → Level Crossing MonitoringMonitoring booms from the proving relays — out-of-sequence, boom-fault, and boom-delay alarms, the timing against the lights, plus boom lights, pedestrian gates, and optional motor current.
Read guide → Signalling Asset MonitoringHow axle counters fail and how they're reset — count discrepancies, wheel rock, head misalignment, EMC; conditional, unconditional, preparatory (sweep) and co-operative resets; and trending resets without touching the vital function.
Read guide → Architecture & IntegrationOPC UA, MQTT, Modbus and DNP3 for wayside data — where each fits, the cost of proprietary protocols and locked hardware, and why you define the interface and stay open to many transports.
Read guide → Connectivity & ArchitectureChoosing mobile-network bearers (4G/LTE Cat-1, LTE-M, NB-IoT, 5G, satellite), designing store-and-forward for intermittent links, realistic latency budgets, and the security posture — private APN, VPN, mutual TLS — that keeps a field SIM safe.
Read guide → Control Room & OperationsWhat an alarm flood is, the EEMUA 191 and ISA-18.2 benchmarks a healthy system is designed against, and the levers that pull a wide-area control room back under them — rationalisation, killing chattering alarms, and safe, engineered suppression.
Read guide →IEC 61131-3 logic patterns for signalling.
