The Simulink model is structured as follows:
Fluid dynamics model: CFD model of tunnel’s internal aerodynamics, including traffic and ventilation
Fire-alarm controls system: Model of the tunnel’s fire alarm equipment, including smoke and fire detection systems
Lighting system: Model of the relation between lighting sensors and actuators
The field devices are simulated using the IO642-32 multi-node simulator, capable of emulating up to 32 PROFIBUS devices. Parallel use of several IO642-32 modules allows the emulation of up to 128 devices. In addition, the IO642 Simulink driver blocks simplify the configuration steps of devices using GSD-Import and automated baud-rate detection.
Thanks to the customized user interface developed with this setup, around 100 testing scenarios related to fire incidents and malfunctions of the lighting system could be implemented virtually and used for staff training purposes.