SIGNAL CONDITIONER OF CONTINUOUS-AMPLITUDE CHANNEL IN MULTI-DIGIT AUTOMATIC CAB SIGNALLING SYSTEM (-)

FIELD: mechanics. ^ SUBSTANCE: invention relates to railway automatics and is designed to form and amplify signals from continuous-amplitude cab signaling system. Signal conditioner of continuous-amplitude cab signaling system consists of two two-channel synthesisers, main and backup. Synthesisers operate in parallel. Each synthesiser is controlled by own control circuit, arbiter. Arbiter switches over main and backup synthesiser by means of switch. Each synthesiser contains generator and start-up modules to actuate phase-shift keyed signal conditioners. Signal conditioner content is determined by input key module signals. Signal conditioner generate control module startup signal. Paraphrase reference frequency signals are supplied to control module input. Signal conditioner also generates phase-shift keyed signal supplied to indication, diagnostic and power amplification module inputs, which further transmits it to synthesiser output. ^ EFFECT: reliability and safety improvement for continuous-amplitude cab signaling system instrumentation. ^ 1 dwg