FIELD: sound warning systems on railway rolling stock.
SUBSTANCE: sound warning device of a compartment of a passenger car comprises a microcontroller, a digital-to-analogue converter, an audio frequency power amplifier and at least one speaker. The microcontroller of the device is connected to the common car Ethernet network via a digital communication switch adapted for broadcasting sound from other devices on the Ethernet network and with the control microcontroller via a digital communication line adapted for switching the operating mode of the device upon a command received from the control microcontroller and/or broadcasting the sound coming over a digital communication line from the control microcontroller, whereas the common Ethernet car network includes a central controller located in the conductor's service compartment.
EFFECT: expanding the functionality of the sound warning device for a compartment of a passenger car.
2 cl, 1 dwg
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