COMPLEX SIGNAL GENERATOR UNIT FOR LOCOMOTIVE SIGNALING Russian patent published in 2020 - IPC B61L23/16 

FIELD: means of monitoring track circuits.

SUBSTANCE: invention relates to means of monitoring rail circuits as part of an automatic block system and a system of rail circuit hardware. Module comprises a complex signal generator, which includes drivers of the rail line control signal, ALSN signal and ALS-EN signals respectively, each of which consists of serially connected signal generator and encoder, which is connected to corresponding input of adder, which output is connected to digital-to-analogue converter, connected through power amplifier to device output, device includes series-connected input bandpass filter and analogue-to-digital converter, to output of which are connected inputs of processing units according to ALSN signal and ALS-EN signals, each of which consists of serially connected band-pass filter, measuring channel and controlled threshold element, which output is output of signal processing unit, wherein ALSN signal and ALS-EN signal generators and ALSN signal processing unit band-pass filter are controllable, outputs of ALSN signal processing units and ALS-EN signals are connected to control inputs of generators of corresponding ALSN signal generators and ALS-EN signals, inputs of generators, control inputs of threshold elements and band-pass filter of ALSN signal processing unit are connected to output of control command processor, connected to CAN bus, each signal generator ALSN and ALS-EN is equipped with a band-pass filter, through which the output of the encoder is connected to the corresponding input of the adder, and the power amplifier is equipped with an output current sensor, the output of which is connected to the input band-pass filter.

EFFECT: higher stability of generated complex signal of locomotive signaling.

1 cl, 1 dwg