DOUBLE-FREQUENCY MULTIVALUED AUTOMATIC LOCOMOTIVE SIGNALLING RECEIVER Russian patent published in 2019 - IPC B61L25/06 

FIELD: railway automatics.

SUBSTANCE: invention relates to the field of railway automation, telemechanics and communication for receiving signals of double-frequency multi-digit automatic locomotive signalling ALS-EN. Receiver comprises an input filter and signal processing units, each of which consists of a band-pass filter, the output of which is connected to the input of the measurement channel and the phase detector, to the second input of which a reference frequency generator is connected, output of phase detector directly, and output of measuring channel through threshold device are connected to corresponding inputs of decoder, outputs of which are connected to inputs of decision module connected to CAN interface, input filter is connected through analogue-to-digital converter with band-pass filter of each signal processing unit.

EFFECT: high noise-immunity, information content and reliability of transmitted information in a channel of multiple-valued automatic locomotive signalling.

1 cl, 1 dwg