Mr Calais X20 series controller in the application of wuhan-guangzhou high-speed rail disaster prevention security monitoring system

Overview with the acceleration of domestic high-speed rail, is becoming more and more attention to the security of high-speed operation. Our country is a natural disaster-prone countries. Disasters mainly include: earthquake, storm, flood, freezing rain, snow and ice disasters, such as debris flow, landslide, sandstorm, disasters every year, the in the operation of these natural disasters for the train travelling at a speed of up to 300 km/h, it can be deadly. Therefore, to establish a set of forecast and early warning function of railway disaster prevention, monitoring and control system is particularly important for the operation of high-speed, and is indispensable. Wuhan-guangzhou high iron is connected to the north and south of wuhan, changsha, guangzhou railway artery, hubei, hunan and guangdong provinces, wuhan station north, south to guangzhou south station, 1068 km, over 15 stations. After the completion of the design speed of 350 km/h, and run the shortest time from wuhan to guangzhou 11 hours reduced to 3 hours and 16 minutes, greatly reduce the stress of the north and south passenger lines. Wuhan-guangzhou railway along the natural environmental conditions, however, is relatively poor, debris flow and heavy fog weather, loose rock and freezing disasters such as frequent; At the same time, because along the way has a more complicated living environment, people, animals and other unconventional across railway events occur. As long as a little carelessness, these factors will be Wu Guangxian deadly killer, once happened, to personal life and national property caused great damage. Therefore, disaster prevention monitoring system as an important component of wuhan-guangzhou railway was listed in the wuhan-guangzhou railway construction. System introduced along wuhan-guangzhou railway has 109 wind speed monitoring, 51 precipitation monitoring stations and 125 foreign body monitoring, the monitoring according to the area had been divided into around 155 districts, each area planted a bei Calais redundant controller for monitoring data are collected, the high speed optical fiber network data respectively and send it to the data center is located in wuhan, changsha and guangzhou. System diagram (see figure 1). Figure 1 wuhan-guangzhou high-speed rail disaster prevention system demand low reliable monitoring system topology as disaster prevention 'eyes' of the monitoring system, each control unit for the data acquisition and sending task. If the monitoring unit fails, then the area will become the monitoring blind spots. Let each monitoring unit, therefore, reliable and stable job is the most important and the most basic requirements. Mr Calais X20 series controller and I/O of MTBF ( MTBF） Reached 500000 hours. All products passed the stringent European CE, UL and other certification test, and can meet the class A EMC test requirements of electrical system of the ministry of railways. In addition, in order to further improve the system reliability, bei Calais also launched a full symmetric redundancy scheme. As shown in figure 2. Two identical CPU running the same program at the same time, and articulated the same I/O and communication module. Only a CPU is the main (during operation Control) , and another in the hot standby state ( No control) 。 At some point, if the host CPU failure ( CPU running failure, failure of I/O module, communication module or PC connection interruption) , the system will immediately to switch, cut in the hot standby state of the original CPU is given priority to, make its have control of the whole system. Due to the switching time is very short, so switching action doesn't affect the whole monitoring unit, in the monitoring center of the screen will not lost any data in the region. Thus, further improve the reliability of each monitoring unit. Figure 2 full symmetric redundant systems low openness, flexibility in each monitoring unit can have a wide variety of instruments and meters, used for various types of data. In order to facilitate maintenance and saving the cost of wiring, many smart meters will choose method of communication with the data transmitted to the PLC controller. At the same time, PLC controller in after collecting the data, but also its transmitted to the monitoring center via Ethernet. This would require the PLC have enough openness and flexibility, can integrate all kinds of communication protocol. Mr Calais X20 standard CPU itself to integrate the two Ethernet communication ( One can according to need to set into Ethernet POWERLINK bus) , a standard RS232 serial interface and two USB interface. If you need additional communication interfaces, we also provide more communication card, it can easily plug into the slots in the back of PLC. In addition, Mr Calais communication card market covers almost all the mainstream of the communication protocol, which means that users will be completely don't care about how to write a communication code. As shown in figure 3. Figure 3 bei Calais X20 standard low CPU configuration, convenient maintenance easily bei Calais provide general programming of configuration software AutomationStudio, for all Mr Calais integrates product configuration and programming, including PLC controller, servo, HMI, and industrial control computer, etc. , for customer development and maintenance has brought convenient. In addition, AutomationStudio supported programming languages as many as seven, in addition to the IEC61131 - among them 3 the standard stipulated in the language ( LD、IL、FBD、SFC、ST） Also support two languages, namely, Automation, Basic and ANSI C. Users can choose different programming languages in the same project configuration, thus greatly increased the development flexibility, and integration for the user some of the more advanced algorithm provides a convenient.
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