LOCOMOTIVE SIGNAL RECEIVER automatic locomotive alarm for areas with electrically-AC

摘要

The invention relates to the field of railway automation. Summary of the utility model is that the locomotive automatic locomotive alarm signal receiver for areas with AC electric traction is further provided with a notch filter with center frequency suppression band of 50 Hz, an automatic switch integrator, an electronic key, a bandpass filter with a center frequency bandwidth of 25 Hz and the bandpass filter with a center frequency of 75 Hz bandwidth. Using the claimed utility model improves the noise immunity of the receiving device automatic locomotive alarm when exposed to strong interference from an alternating drive current and the magnetic field non-uniformly magnetized rails, whereby the safety of trains is increased ,. 1 n.z..p. f ly-1-yl.