Abstract: Train occupancy detection in main line turnout areas is always the key point of an operation control system of modern trams. Nowadays, the detection of vehicle occupancy in turnout areas through trackside controllers is performed by axle counters, beacons, and loops and so on. However, under some abnormal conditions, such as shaft leakage, failure to read beacon information, and disturbance in the loop line and so on, the efficiency of train operation is affected. In order to solve this problem, ITCM-100 intelligent track circuit adopts resonant track circuit to indicate the real-time status of occupancy more directly and improve the safety of interlocking in turnout areas. This equipment has been used in the practical tram project and its safety, reliability and maintainability have been tested, so it can be widely adopted in other tramcar projects.

Key words: tramcar, resonant mode, track circuit, safety of interlocking

摘要： 有轨电车运行控制系统中，正线岔区列车占用检测是关键难点。目前轨旁控制器检查岔区车辆占用情况主要有计轴、信标、环线等设备，实际使用中常有漏轴、信标读取不到、环线被干扰等非正常情况，影响行车效率。为解决这一难题，有轨电车专用ITCM-100型智能轨道电路设备采用谐振式轨道电路方式，更加直接地反映占用实时状态，提高岔区联锁安全性。该设备在有轨电车工程上线，其安全性、可靠性和可维护性方面得到充分验证，可广泛应用于有轨电车工程项目。

关键词: 有轨电车, 谐振式, 轨道电路, 联锁安全性