This paper proposes the hardware implementation of a novel in-cabin module to realize a smart surveillance on autonomous train operations (ATO). The proposed smart surveillance module (SSM) consists of a 10-layers PCB carrier card holding a central computing core based on an Ultrazed-EG system on module (SoM). To interface cabin equipment, the SSM includes several common communication buses in the railway context, favoring its inclusion in already existing apparatus. The SSM also provides a multi-piggyback slot, whose layout is designed to allow the independent housing of two different communication boards (Profibus or Continuous Signal Repetition), when included in a redundant architecture. These functionalities have been condensed in a single Eurocard board with a height of only 4 horizontal pitches. To improve the fault detection, the SSM has been also supplied with several diagnostic interfaces concerning power management, debugging and diagnostic and SoM temperature monitoring.
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