The train control center system is a key link in the entire CTCS (China Train Control System). It serves as the overall responsible system for various track signal devices on the ground. It needs to be interlocked with CTC / TDCS, computer / 6502 electrical concentration, and computer monitoring It has both a system interface and a control center for ground electronic unit (LEU) and point transponder equipment, so the train control center is the core safety equipment in the CTCS-2 level standard of China train control system.
The upper computer in the train control center system is the monitoring equipment of the entire system. All the states in the system must be displayed to the operator through the upper computer in real time, so that the operator can understand and deal with various problems in time.
Passau60 is a 2U fanless industrial computer launched by Kontron in early 2009. Its application in the train control center system is shown in the figure. The monitoring information of the system is transmitted to the upper computer Passau60 via Ethernet by each group of dual-redundant main controllers. At the same time, Passau60 sends the required information to the computer monitoring equipment of the entire train control system via Ethernet. Passau60 can well complete the work of the host computer of the train control center mainly due to the following characteristics:
1 Fanless dust-tight structure
Humidity and dust are the two killers of industrial computers. For industrial computers equipped with chassis fans or with ventilation holes in the chassis, how to work stably in a high humidity or high dust environment for a long time is a difficult problem. Regular Maintenance work such as filter dust removal and fan inspection and replacement requires considerable investment. The Passau60 adopts a fully enclosed structure without fans, which effectively isolates dust and minimizes the entry of humid air. At the same time, this heat dissipation method also avoids system failures caused by fan failure, making Passau60 maintenance-free Equipment is a stable and reliable link in the entire system.
2 Rich communication interface
Passau60 provides 6 serial communication interfaces and 6 network interfaces. In the application of the host computer of the train control center, up to 6 Ethernet interfaces will be used, while the ordinary industrial control computer generally can only provide 3 network ports. To achieve the same function, you need to add multiple Ethernet cards, which not only increases the cost, but also increases the point of failure. The Passau60, which integrates 6 network interfaces itself, easily meets this demand.
The serial communication interface of Passau60 is designed in a modular form. Not only can it be replaced flexibly, but the failure of one serial port will not have any impact on the normal operation of other serial port modules.
In addition, Passau60 provides 7 USB interfaces (including a built-in USB interface), 1 VGA interface, AUDIO interface with power amplifier output and 2 PS2 interfaces, which can fully meet the needs of customers in various situations.
3 High-quality power supply
The power supply part is one of the key components of the industrial control computer, and its importance is just like the heart of the industrial control computer. Even if there is a small problem, it may cause the entire machine to fail to work properly. Passau60's power supply is excellent in all aspects, not only achieves a high MTBF, but also supports redundant configuration and can achieve automatic load balancing. These characteristics are particularly suitable for high-reliability applications.
4 Excellent resistance to EMC interference
Passau60 is designed according to high standards in terms of EMC, and has passed the high-level EMC test of the National Institute of Electrical Engineering, which fully meets the requirements of the rail transit industry. At the same time, each serial port and Ethernet interface of Passau60 are completely independent including power supply. Even if any port is invalid due to extreme EMC interference, this interference will not be transmitted to other ports, which maximizes the system robustness.
5 Good scalability
Passau60 provides three standard PCI or ISA expansion interfaces. If additional functions are needed, various functions can be easily expanded through these standard interfaces.
6 Flexible configuration
Passau60 adopts a modular design. The serial port, power supply, PCI / ISA expansion backplane, etc. introduced above can be flexibly selected whether to configure or the number of configurations according to actual needs. In addition, Passau60 can support a variety of processing cores including Core, PenTIum-M, and ATOM to meet the needs of different applications for computing power.
Modular design not only allows customers to choose the best configuration according to the specific situation of the application, but also can control the cost in the most reasonable range.
in conclusion:
It is precisely because Passau60 has so many characteristics, so it not only has strong versatility, but also can work in a variety of harsh environments, which makes Passau60 widely used in the rail transportation industry.
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