97型25 Hz相敏轨道电路预叠加电码化调整问题分析

Pre-overlap Coding Adiustment Issues of 97-type 25 Hz Phase Sensitive Track Circuit

通过对25 Hz相敏轨道电路电码化预叠加电路、入口电流调整方式、发送功出调整、股道发送调整器调整及调整电阻盒调整情况进行分析,针对预叠加电码化中咽喉区长度为50 m的区段和股道长度1050 m的区段相同调整方式情况,分析此两种场景下的区段用0.15Ω标准分路电阻分路时的分路电流情况,根据仿真情况提出解决入口电流超标情况的建议。

This paper analyzes the pre-overlap circuit of 25 Hz phase sensitive track circuit coding,the adjustment mode of inlet current,the adjustment of transmitting power output,the adjustment of track transmission regulator and the adjustment of resistance box.In view of the same adjustment mode of 50 m throat section and 1050 m track section in pre-overlap coding,it analyzes the section with 0.15Ωstandard shunt resistance in these two scenarios.According to the simulation results,it puts forward suggestions to solve the problem of over standard inlet current.