基于信标的降级运行列车定位及防护方案

Degraded Operation Train Positioning and Protection Scheme Based on Beacons

[目的]当车载信号设备发生故障时,若通过轨旁次级定位设备来完成降级运行列车的定位及防护,需要增设轨旁信号设备数量,成本较高。对此,有必要在不增设轨旁设备的前提下,研究基于信标的降级运行列车定位及防护方案。[方法]介绍了方案的基本原理及设备组成,详细阐述了列车定位原则和防护原则。列车降级运行时,车载基于信标的次级定位设备能读取信标信息,并通过车-地无线通信网络发送至轨旁ATP(列车自动防护)设备;轨旁ATP设备基于故障列车报告的位置信息完成对降级运行列车的位置检测,并结合线路情况控制降级运行列车前方防护信号开放,安全引导降级运行列车快速地下线退出运营,同时为后续正常列车发送计算移动授权,以保证相邻列车间的安全运行间隔。[结果及结论]基于信标的降级运行列车定位方案,不需增设轨旁设备,能使降级运行列车与正常列车防护间隔较近,对后续列车正常运行的影响小,故障情况下的运营组织效率高。相关工程应用及现场测试验证了该方案的可行性。

[Objective]When the on-board signaling equipment fails,relying on trackside secondary positioning equipment for degraded operational train positioning and protection requires additional trackside signaling equipment,incurring high costs.Therefore,it is necessary to develop a beacon-based degraded operation train positioning and protection scheme without adding trackside equipment.[Method]The basic principle and equipment composition of the scheme are introduced,detailing the principles of train positioning and protection.During degraded operation,the on-board beacon-based secondary positioning equipment can read beacon information and transmit it to the trackside ATP(automatic train protection)equipment via a vehicle-wayside wireless communication network.The trackside ATP equipment detects the position of the degraded operational train based on the reported location information from faulty train and controls the opening of protection signal ahead of the degraded train according to line conditions.This safely guides the degraded train to quickly exit operation while ensuring that normal trains receive movement authorization to maintain safe operation intervals between adjacent trains.[Result&Conclusion]The beacon-based degraded operation train positioning scheme does not require additional trackside equipment,allowing the degraded train to maintain a close protective interval with normal trains,minimizing the impact on the normal operation of subsequent trains,and ensuring high operation organizational efficiency during faults.The feasibility of this scheme is verified by relevant engineering applications and field tests.