Tunnel Ventilation Monitoring

Problem

Jet fans and CO / visibility sensors are controlled by a local PLC, but the traffic control centre does not see fan status, sensor trends or faults in time.

Opis rozwiązania

MILESGO gateways collect data from tunnel jet fans and ventilation controllers, CO / visibility (VI) / NO2 sensors, PLCs, variable frequency drives (VFD), electricity meters over S7 / Modbus TCP / Modbus RTU / PROFINET, and deliver it to SCADA, the operations / command centre, SMS, email and messaging alarms as OPC UA / IEC 60870-5-104 / MQTT. Field equipment keeps its own protocol and control logic; integration is done by configuration and point mapping, not custom code.

Typical scope

tunnel jet fans and ventilation controllers
CO / visibility (VI) / NO2 sensors
PLCs
variable frequency drives (VFD)
electricity meters

Protocol path

S7 / Modbus TCP / Modbus RTU / PROFINET → OPC UA / IEC 60870-5-104 / MQTT

Implementation checklist for the project manager

Fire and life-safety systems are monitored read-only; control stays with the certified fire system.
Do not modify validated PLC programs; read existing data areas or add gateway-side mapping instead.
Commission in read-only mode first; enable write / control points only after the client approves each one.
Keep OT networks segregated and use VPN for remote access instead of opening ports to the internet.
Define an alarm matrix (priority, recipient, escalation) and test every alarm end to end at SAT.
Build and simulate the configuration off site (FAT) before installation to shorten time on site.

Project deliverables

Signed point table and protocol mapping
Gateway configuration files and backups
IP address plan and network drawing
FAT and SAT test records
As-built documentation and operator training

Architektura systemu

Field layer: tunnel jet fans and ventilation controllers, CO / visibility (VI) / NO2 sensors, PLCs, variable frequency drives (VFD), electricity meters, connected over S7 / Modbus TCP / Modbus RTU / PROFINET. Edge and integration layer: MILESGO protocol gateways and edge controllers, mounted on DIN rail in existing panels, polling each device, time-stamping values and buffering them locally. Upper layer: SCADA, the operations / command centre, SMS, email and messaging alarms, which receives the data as OPC UA / IEC 60870-5-104 / MQTT. Remote access for maintenance runs over VPN rather than open internet ports.

Skład systemu

Field devices: tunnel jet fans and ventilation controllers, CO / visibility (VI) / NO2 sensors, PLCs, variable frequency drives (VFD), electricity meters
Edge / integration: MILESGO protocol gateways and edge controllers
Upper systems: SCADA, the operations / command centre, SMS, email and messaging alarms (OPC UA / IEC 60870-5-104 / MQTT)
Tools and commissioning: Web-based configuration, point table import/export (Excel), off-site simulation and on-site diagnostic tools

Możliwości oprogramowania i AI

Anomaly detection on trend dataW planach
Predictive maintenance indicators from equipment trendsW planach

Etapy wdrożenia

1
Site survey and point list
Inventory devices, protocols, register maps, panel space, power and network paths.
2
Design and point table sign-off
Map every point to the target protocol and system; agree it with the client and the upper-system contractor.
3
Configuration and FAT
Build the gateway configuration off site, simulate it and test against the signed point table.
4
Installation and wiring
Mount gateways on DIN rail, wire RS-485 / I/O / Ethernet, apply the IP plan.
5
SAT and alarm tests
Verify values against local readings, test every alarm and command end to end.
6
Handover and support
Hand over configuration backups, point table and as-built documents; train operators.

Korzyści dla klienta

One view of all subsystems instead of separate vendor consoles
Monitoring added without changing existing control programs
Abnormal conditions seen early, before they become failures
Timestamped records for compliance and reporting

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