I. Application of Advantech IPC in Qinghai-Tibet Railway:
Advantech IPC is mainly used in the large-screen display subsystem and the station subsystem of the dispatch center of the TDCS system on the Qinghai-Tibet line. In order to better understand the application of Advantech IPC in the TDCS system, we need to introduce the TDCS (Train Dispatching Command System) system. TDCS is the abbreviation of the train dispatching command system. It consists of a large-scale, two-tier, three-tier enterprise wide-area network. The two levels refer to the backbone network of the dispatching center of the Ministry of Railways and the backbone local area network of the railway bureau. The three-tier refers to the three levels of the Ministry of Railways, the railway bureau, and the station. The IPC is mainly used in the two subsystems of the railway bureau and the station. The TDCS network structure is shown in Figure 1. In the figure, only four railway bureaus are listed. At present, the Ministry of Railways has a total of 14 railway bureaus and the Qinghai-Tibet Corporation currently has 112 stations. In the figure, only 5 are listed, and the structure of the TDCS network in each office is basically the same. Therefore, the application of Advantech IPCs in other railway bureaus is basically the same.
Figure 1: Schematic diagram of a large network structure for TDCS
1. Application in the display subsystem of the dispatch center: At present, there are three large-screen display screens in the Qinghai-Tibet company's dispatch center, which are used to display the real-time running status of the trains in the 95 stations. Through the display of large-screen dispatchers, they can intuitively understand their own schedules. Train operation within the section. The realization of this function is through the IPC to convert the station site information and train operation information data from the server to the multi-serial card and decoder board through the data acquisition card and 722 multi-output board, and finally light up the large screen through the drive system. The corresponding display unit displays the train trip information, track, and section occupancy information on the large screen in real time.
Figure 2: The Xining Dispatching Center of Golmud-Lhasa Section of the Qinghai-Tibet Railway shows a large screen
2. Application in the station subsystem: In the subsystem of the TDCS station station, it is mainly used as a vehicle service terminal and an electric service monitoring terminal.
As a core device in the subsystem of the tDCS station, the vehicle service terminal mainly completes the formation of the electronic statistics of transportation statistics and the display of the station station and field maps, receives and applies scheduling commands through the tDCS network, and collects trains and dispatches commands to the locomotives. Wireless transmission. The electric service monitoring machine mainly completes the collection of various information of the station signal equipment, forms various electronic reports, and monitors the running status of various signal equipment in real time, so that the maintenance personnel can discover the hidden dangers of the equipment in advance and assist the maintenance personnel in analyzing and diagnosing the equipment failure. , And can achieve remote diagnosis and processing equipment failures through computer networks.
Figure 3: TDCS system station LAN network structure
Second, Advantech IPC application range and work environment
1, the scope of application:
The Golmud-Lhasa section of the Qinghai-Tibet line opened on July 1 this year has a total of 45 stations, of which 7 are equipped with 3 Advantech IPCs at each station, and the rest are 2 sets. The dispatching center uses 2 sets, totaling about 99 sets, configured as C3800. / 256M/40G/100M/ dual network card.
The Qinghai-Tibet Railway Company first opened the TDCS system at 69 stations over 900 kilometers from Haishi Bay to Golmud in May 2002. It has achieved good economic and social benefits and was highly praised by the Ministry of Railways. The railway minister Liu Zhijun has visited many times. The Qingzang Company's dispatch center gave a high evaluation of the normal operation of the TDCS system. The 69 stations are equipped with 215 Advantech IPCs, most of which are Advantech's IPC-610 series and are configured as MMX266/64M/20G/NT4.0. Currently, most of them are still on-site except for the ones that were replaced in the station renovation project. Operation, working time has reached more than 30,000 hours, the dispatch center was using Advantech IPC-610 series industrial computer 10, the configuration for the P4 1.8G/256M/40G is currently operating well.
2. Work environment:
The Qinghai-Tibet Plateau, which is called the third pole of the world, is famous for its extreme cold and oxygen and poor living conditions. The Golmud-Lhasa section of the newly-built Railway Qingzang Line was built in such an environment. The total length of 1118 kilometers is 965 kilometers. The section of the road is laid in an area above 4,000 meters above sea level, and the highest point is 5072 meters above sea level at Tanggula Mountain. Advantech's nearly 100 units of C3800/256M/40G/100M/dual-NIC low-power IPCs work under such circumstances. Dry climate conditions and low air pressure make electronic components manufacturing equipment face severe challenges. Advantech The industrial control machine has been operating stably since its opening with excellent quality, and has made great contributions to ensuring the normal operation of the TDCS system on the Qinghai-Tibet Railway.
Although the climate conditions in the Xining-Golmud section of the Qinghai-Tibet line are better than those in the Golmud-Lhasa section, the altitude is low, but after nearly four years of uninterrupted operation, Advantech has been recognized by users. 215 units of Advantech IPC ensured the system. The normal operation.
In addition, the service terminals in the TDCS system are all placed in the station's operation room. Most of the station's operation room is only a dozen meters away from the track, and trains weighing several thousand tons have great vibrations, and the IPCs Years of work and work in this environment, after several years of test, that Advantech IPC has a very good anti-seismic function.
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