关于青藏线塞拉门为防止出现误开门,通过增加继电器来控制开门回

1、关于青藏线塞拉门为防止出现误开门，通过增加继电器来控制开门回路的建议方案，康尼公司经过分析认为，按这种方案更改后仍存在故障导向安全问题，并不能完全保证门系统的安全，详细的分析如下：青藏线塞拉门的控制功能是按照铁道部经数次统图会后，统一的25T塞拉门控制功能逻辑规定进行设计的。其中规定了5km/h信号由电子防滑器的常开触点提供给门系统，信号的逻辑定义为当车辆速度<5km/h时，电子防滑器的常开触点打开，5km/h信号表示为低电平（0V），允许开门。但以目前的这种定义，在电子防滑器故障时，甚至电子防滑器没有安装时，5km/h信号仍表示为低电平（0V），即允许开门。即使增加了继电器来控制开门回

2、路的供电，如果电子防滑器发生故障，5km/h信号仍允许开门，因此有可能不安全。另外，电子防滑器提供给门系统的5km/h信号还必须达到足够高的安全等级，才能保证受此5km/h信号控制的门系统安全性。因此，康尼公司认为，仅通过增加继电器的方案并不能完全保证门系统的安全，还需要更改电子防滑器的5km/h信号逻辑定义为：当车辆速度<5km/h时，电子防滑器的常开触点闭合，5km/h信号表示为高电平（+24V），允许开门。同时还需提高5km/h信号的安全等级，才能保证门系统安全。否则达不到预期的目的，仍需要乘务员锁闭安全锁开关。 康尼公司愿意积极配合BSP及各方面的工作，对于青藏线塞拉门的控制功能

3、逻辑进行进一步的商讨和改进。9月16号北京发车 塞拉门实验。铁科院派人从车库到西站之间做了5公里信号实验。实验过程：1：南京康尼胡工更新门控制器程序：当网关有送给门控制器的5公里信号时 门控制器不输出控制信号。只有来自防滑器的5公里硬连线信号对5公里门控有效，但是来自防滑器的硬连线信号延时3秒后才输出门控制信号既：5公里信号只有连续持续3秒中才有效。将所有门控器的程序更新完毕后。我们在车库中 将所有的门打开（此时车辆处于通电状态）。所有的门打开的时间持续大约40分钟。在此期间没有发生塞拉门自动关闭情况。在石家庄站，西安站，兰州站，西宁站停车间均未发现门有自动关闭现象。2：当车辆往西客站发车车速

4、达到5公里时所有塞拉门自动关闭。由于不正常关门现象发生的次数比较少可能是由于一个随机性的原因产生的故障。所以仅仅从这次实验不能说明是软信号有问题，也不能证明硬信号有问题。只有长期验证才能判断故障点。另建议 做比较实验：一个车仅有软信号，一个车仅有硬信号。通过一段时间的运行看看在那个车上发生不正常关门现象。The proposal of adding relay to control door-open-loop is still considered as unsafe by Kangni after making analysis, please see the following poin

5、ts,It is written in MORs general plug-sliding door TS that 5km/h signal to the door is coming from the normal open contact of ELECTRONIC ANTI-SLIDING UNIT, logical definition of the signal is when the vehicle speed is < 5km/h, the normal open contact is open, 5km/h indicates the voltage as 0v, do

6、ors are allowed to release.But with existing definition, when ELECTRONIC ANTI-SLIDING UNIT has fault, or even when it is not installed, the doors are also allowed to release because the signal of 5km/h indicates 0V as well. In addtion, to ensure the safety, 5km/h signal to the door system must be de

7、fined as more detailed. According to Kangni, logical definition of the 5km/h signal should be,When vehicle speed is <5km/h，the normal open contact should close, 5km/h signal indicates high voltage (+24V), doors are allowed to release. Meanwhile we should improve the correctness of the 5km/h signa

8、l. Otherwise design purpose will not be relized, doors still need to be operated manually.5-Kilometers Signal tests were done on Sept 16 in Beijing by CARS people.Testing process：1：Kangni Engineer Mr. Hu updated door control unit procedure: When 5 km/h signal comes from gateway, door control unit do

9、esnt manage the sinal at all. Only the hard connecting sinal comes from anti-sliding unit takes effective to door control unit, but it has 3-second time-delay, in aother word, it works this way only when the 5km/h signal lasts 3 seconds.When update of all the door control unit procedure were complet

10、ed, we opened all doors in the testing shop (now the trainset is with power) and it took about 40 minutes. During this period, no door was closed automatically. And this phenomenon has not been found when trainset stopped in stations of Shijiazhuang, Xian, Lanzhou and Xining.2：All doors were closed

11、automatically when the trainsets speed was 5km/h during its operation to Beiing West Station.Because the abnormal door close phenomenon happens not very offen, so maybe it was caused by a random reason, it should be judged as neither a problem of soft signal, nor of hard signal. It needs to be judged with long term observation.Plus, we suggest that comparison t