High-voltage pulse track circuit and frequency shift coding signal superposition isolation circuit

• Main Authors: LI ZHENG, JI GUANGGANG, YE KAIHUA, LIU JIANLEI, WANG YONGJUAN, CHU GUANGQIAN
• Format: Patent
• Language: Chinese; English
• Published: 07.12.2021
• Subjects: ENSURING THE SAFETY OF RAILWAY TRAFFIC; GUIDING RAILWAY TRAFFIC; PERFORMING OPERATIONS; RAILWAYS; TRANSPORTING

A high-voltage pulse track circuit and frequency shift coding signal superposition isolation circuit of the utility model comprises an in-station track circuit, a code sending device, a high-voltage pulse sending device and a matching transformer, a signal isolation device composed of a parallel arm and a serial arm is arranged between the matching transformer and the in-station track circuit, the parallel arm is a circuit which passes low frequency and resists high frequency, and the serial arm is a circuit which passes low frequency and resists high frequency. The string arm is a circuit which passes high frequency and resists low frequency; the two ends of the parallel arm are connected to the secondary side of the matching transformer, one end of the parallel arm is connected with the high-voltage pulse signal receiving end, and the other end of the parallel arm is connected with the coded signal receiving end through the serial arm. The superposition isolation circuit provided by the utility model realiz