GE PACSystems RX3i help Beijing subway line 2 to achieve environmental and monitoring equipment

Beijing subway line 2 vehicle equipment blanking reconstruction project plan completed in 2011, the environment and equipment monitoring and control system is an important part of the blanking renovation project. The system for the mature operating years of subway line in the heart of the city increased monitoring function, the station has been implemented in April 2009 control run across all the major equipment, equipment level in the center of the OCC platform to realize all of the monitoring and control instructions issued and patterns, and implement level to TCC related data. The implementation of the system of all station ventilation and air conditioning systems, water supply and drainage system, escalators, station facilities, such as lighting system for automatic monitoring and management. 18 stations are there in the subway line 2. Including: the upper station fuchenmen station sparkles, che zhuang station, xizhimen station, station, AnDingMen jishuitan station, the drum tower street station, lama temple station, dongzhimen station, DongSiShiTiao station, upper dajie station, jianguomen station, Beijing station, chongwenmen station, the front door, the peace arch stand, xuanwu gate station, long street station, and the corresponding interval. BAS on the station and the jurisdiction between ventilation and air conditioning system, water supply and drainage system, elevator system, low voltage power distribution and power station equipment such as lighting system to conduct a comprehensive and effective monitoring and management automation, programs to automatic, real-time, timing, and monitor equipment running status, control equipment of opening and closing, testing environment parameters, regulating the environmental comfort and energy saving management. Historical data acquisition, processing the information of the archives and the equipment maintenance management, to ensure that the system is in safe, reliable, high efficiency, energy saving the best running state, thus providing a comfortable driving environment, and can block the train accident situation, better coordination of equipment operation, give full play to the role of the various devices due to ensure passenger safety and normal operation of the equipment. 1 system solutions and implemented. System structure of the system set up central, station level and local level 3 monitoring mode, BAS itself does not form a separate private network, the station by subway BAS information communication system transmission line of dual redundant backbone to OCC central control room, central functions. Across the network by 18 station and corresponding interval, the control center, etc. By specific Settings in the central control room OCC BAS equipment, each station in control room BAS equipment, substation, substation, BAS, BAS equipment at the scene. 2. Central all management using redundant Proficy HMI/SCADA server - CIMPLICITY real-time data as a data acquisition interface software, through its built-in bridge driver is connected with the station control system running Proficy CIMPLICITY HMI/SCADA - the connection between the, through its abundant driver establishment and the connection between the center control system and PLC, the operation of the first-hand data collected, real-time process database will provide real-time monitoring picture provides the data, at the same time will be center stage history database data sources. Using Cimplicity SQL as historical database platform, the real-time data server centralized management of the data conveniently. 3. The station equipment monitoring PACSystems RX3i simple redundant controller through Genius field bus configuration VersaMax remote I/O, communication controller PLC and IBP alone setting control PLC. For the direct connection of digital or analog, through remote I/o module to the PLC controller and fieldbus control, this kind of data with relatively little information on each node are usually a few bytes, according to 100 bytes, 10 nodes each node 76. 8 KBPS rate of bus can realize the input and output of about 30 ms refresh rate. By using strong anti-jamming ability of Genius bus frequency modulation signal way, Genius bus for peer-to-peer network logic structure, the undisturbed switch of redundant function, the system adopts the way of single bus. Use LD language application implementation application demand, around the sweep time of 30 ms. For VRV aircon with RS485 communication way, frequency converter, the CONTROL of the chiller and so on, each node has several dozens to hundreds of gigabytes of data, at present the equipment interfaces do not support the PLC manufacturer usually used to CONTROL the remote I/o mode of fieldbus GENIUS, for example, the CONTROL NET, DP, ETHERNET, MB PLUS, etc. , but support point-to-point communication mode, for example, the standard MODBUS RTU or equipment manufacturer defined software agreement, PLC side provide standard MODBUS RTU interface, also provide free programming communication port to realize the data acquisition and CONTROL of the equipment. Communication of PLC side request and control to RTU station or RTU from station mode does not provide standard equipment, data acquisition and control. The project defines communication physical interface RS485, protocol USES the standard MODBUS RTU protocol. In order to ensure the real-time data refresh, BAS channels provide separate equipment, do not turn the Ethernet serial data communication gateway, avoid the baud rate of serial port itself limits PC or PLC in Ethernet physical interface to run multiple serial port communication cause jams, turn the Ethernet serial gateway way is very difficult to guarantee the real-time performance of the communication control.
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