轨道电路的绝缘节分为机械绝缘节和电气绝缘节两种。机械绝缘节是在轨缝处安装绝缘设备,阻止相邻区段信息互串。为了防止绝缘破损,误动信号设备,绝缘节两侧的轨道电路采用极性交叉、频率防护等措施。由较短钢轨与调谐设备组成的谐振式电 Track circuit of the insulation section is divided into mechanical insulation section and two kinds of electrical insulation section. Mechanical insulation section is installed in the rail joints insulation equipment, to prevent the adjacent sector information cross-string. In order to prevent damage to insulation, malfunction signal equipment, insulation on both sides of the track circuit using polarity crossing, frequency protection and other measures. Resonant electricity consisting of shorter rails and tuning equipment