DEVICE FOR BETTER TRANSMISSION THROUGH THE RAIL BETWEEN A RAILWAY TRACK AND A GROUP OF VEHICLES RUNNING ON THIS TRACK

摘要

A better transmitting device is disclosed where the propagation zones of the information signals are independent of the block sections of the system. A generator (11) of alternating signals modulated in (12) by the signals (13) to be transmitted is coupled to the lines of rail (1 and 2) by induction, by means of a spiral (6) downstream of the zone. Each information transmitting zone is defined upstream and downstream by resonant circuits (4 and 5) tuned on the carrier frequency of the transmitted signals. This frequency is selected in order to avoid any interaction between the track circuits and the information transmitting device. Application to railway traffic.