introduction: With the rapid development of the railway transportation system and the continuous improvement of people’s living standards, both the staff and the passengers have become increasingly demanding for work, life, safety, transportation, and rest. In order to meet these people's needs, and also to improve the production safety level and modern management level of railway enterprises, and to achieve the goal of energy saving and consumption reduction, various types of electromechanical equipment for station buildings, such as ventilation and air conditioning, water supply and drainage, lighting, escalators, emergency lighting, For equipment or systems such as power distribution and distribution, advanced computer technology, control technology, and communication technology should be used to automatically monitor, control, and manage them in order to save energy, save manpower, and improve safety and management levels. 1. System Overview <br> This project is the west exit project of Zhengzhou Railway Station (including Zhengzhou West Railway Station, elevated waiting room, entrance and exit tunnels), of which the total building area of ​​the West Railway Station Building is 12000m2, and the total building area of ​​the elevated waiting room is 6200m2. The station is 2500m2 underground. Zhengzhou main station houses are existing station houses. There are substations in the main station room and equipment monitoring system is not equipped. The electromechanical equipment monitoring system is newly established in Zhengzhou West Export Project. It has good expandability and has both substations in the main station room. Mechanical and electrical equipment monitoring included conditions. Advantech Automation Building Division Since its founding in 1983, Advantech has devoted itself to developing and providing high quality/high performance products and services. As the first business group of Advantech, Advantech Automation focuses on four vertical industries: building automation, machine automation, power energy and intelligent transportation. Building automation, as a key industry for Advantech, has established the Advantech Automation Building Division to provide advanced technical support and global after-sales services. Advantech Automation has independently developed the BAS-3000 Series DDC Ethernet Building Automation Controller. Based on TCP/IP technology, the Web is used as the core of the building control system, providing mature hotels, office buildings, industrial plants, hospitals, schools and communities. System solutions, and system integration of security, firefighting and other subsystems. Advantech's automated building automation system will lead the building Web new technology and build your smart building. Safety: unlike glass neon tube, its normal operation requires a high voltage of 15,000V, while the flexible neon strip is at 12V. And its shockproof, temperature resistant, salt resistant, acid and alkali resistant. Neon Christmas Lights,Led Neon Christmas Lights,Neon Word Lights,Christmas Neon Light Signs Shenzhen Oleda Technology Co.,Ltd , https://www.baiyangsign.com
The system uses Advantech's complete set of building automation solutions, including PC software, communications network equipment and Ethernet controller DDC.
2. System composition
The system consists of a central monitoring station, field controllers, and other monitoring subsystems (such as central air-conditioning monitoring subsystems, low-voltage transformers, and intelligent monitoring subsystems), sensors, actuators, and communication networks.
1) The central monitoring station is located in the integrated control room of the station building and consists of workstations, servers, management networks, electronic duty systems, printers, and UPS. It is responsible for the monitoring and control of all electromechanical equipment in the station rooms and provides communication interfaces with the FAS system. In the event of a fire, the FAS fire information is received to execute the fire mode, and the data transfer interface with the superior MIS or monitoring system is reserved.
2) DDC field controller Set DDC on the site where the electromechanical equipment is relatively concentrated, and complete the monitoring of ventilation, air conditioning, lighting, water supply and drainage equipment.
DDC uses Ethernet and TCP/IP network technology to directly connect to the monitoring layer industrial Ethernet; embedded Web server, no special software, you can use a common browser (such as IE) to perform basic monitoring; expansion is flexible and convenient. The I/O module can be expanded by an internal bus.
3) Other monitoring subsystem station monitoring subsystems include central air-conditioning monitoring subsystems, low-voltage variable-distribution intelligent monitoring systems, emergency lighting systems, and escalator intelligent controllers. These subsystems access the nearest regional industrial ethers through necessary communication adapters. Network switches, incorporated into the BAS central monitoring station to achieve unified monitoring and scheduling management.
4) On-site sensors and actuators at the field level include various sensors, intelligent instrumentation, and actuators. They are responsible for the data acquisition of the operational status of the electromechanical equipment, including analog, AC, switch, pulse, digital, etc. The commands of the controller and the upper master station are controlled by switches, valves (actuators), regulators, etc. In many cases, the manual operation mechanism needs to be configured at the site so as to complete the operation task in the field of maintenance, repair or emergency.
5) Communication network The communication network consists of a management network and a monitoring network. Ethernet and TCP/IP network protocols are used. The management network and monitoring network are seamlessly integrated.
3. Network structure
The communication network consists of the central monitoring station management network and the monitoring network. Ethernet and TCP/IP network protocols are used. The management network and the monitoring network can be seamlessly integrated, with simple structure, no intermediate conversion, high efficiency and high reliability.
The central monitoring station management network adopts a dual Ethernet structure.
The monitoring network adopts integrated cabling technology and consists of a trunk network and various working area networks. The trunk network uses multi-mode optical cables to form a fiber ring industrial Ethernet with self-healing capabilities, connecting the central monitoring station and the work area network distributed in the field. The area where the station equipment electromechanical equipment is relatively concentrated forms a regional monitoring network. The regional network consists of industrial Ethernet switches, communication adapters, UPSs, and distribution frames. The DDC, monitoring subsystem, and intelligent controller are connected nearby; each monitoring subsystem Internal fieldbuses can be used, such as the RS-485 bus in the intelligent monitoring system of the substation.
4, system plan description
The monitoring and control system of the station electromechanical equipment adopts a hierarchical and distributed structure and consists of a central monitoring station, a field controller DDC, input and output devices and related communication networks. Its network architecture uses a fiber-optic ring network redundant network and is an industrial Ethernet network from Advantech. The main features of the EKI series of switches are that the on-site controller DDC is directly connected to the Ethernet switch, and the communication and interoperability between the DDC and the DDC and between the DDC and the host software are realized through the Ethernet network. In conjunction with the field controller DDC and the host computer software WebAccess, in addition to the basic requirements for device monitoring, it can also achieve energy-saving results.
The system implements centralized monitoring and decentralized control of the following subsystem devices:
1) Air-conditioning ventilation system: including air-conditioning processing units, new fans, exhaust fans.
2) Water Supply and Drainage System: Including various sewage pumps for station houses and tunnels.
3) Lighting system: Monitor the lighting circuits of waiting rooms, ticket halls, entrance and exit passages, pillarless canopies, and landscapes.
4) Emergency Lighting System: Emergency Power System (UPS)
Various conditions are monitored.
5) Low-voltage transmission and distribution system: Monitoring of low-voltage substations at stations, and configuration of intelligent monitoring instruments.
6) Escalators: All types of escalators at stations are equipped with intelligent controllers as their monitoring equipment.
7) Others: Monitor humidity sensors, temperature sensors, electric dampers, electric fire dampers, electric fire dampers, and electric shutter doors.
5, product introduction
This system adopts Advantech building automation system overall solution, including: WebAccess PC software, EKI series switches and BAS-3KDDC controller.
WebAccess upper computer software introduction:
WebAccess is a configuration software with independent intellectual property rights, based on IE browser kernel, B/S structure of Advantech, with all network features of IE browser, including remote development, browsing and maintenance of projects, alarm management, trend recording, reports Print and other features, with an unlimited number of free clients.
EKI series switch introduction:
EKI series industrial-grade Ethernet switches with fiber ports allow users to quickly and effectively expand the communication network. Application of optical fiber can prevent system noise interference, and the transmission distance can reach 2 kilometers or even higher. In addition, the top industrial design of Advantech EKI series products ensures the reliability and stability of equipment operation.
BAS-3000 Ethernet Controller Introduction:
The BAS-3000 series Ethernet controller is an Ethernet-based building automation dedicated controller developed by Advantech and provides monitoring and control of HVAC, cold and heat sources, water treatment, and substations. The controller uses all-Ethernet communication to ensure fast data exchange and data exchange between field devices. The open communication protocol supports BACNet and Modbus protocols. At the same time, DDC supports the WebServer function, allowing customers to directly log in to the on-site DDC through the common IE browser for data browsing.
6. Conclusion <br> The building automation system is facing all the mechanical and electrical equipment in the building. The purpose of setting up the building automation system is to make all mechanical and electrical equipment complete its work in a scientific, rational and orderly manner on the premise of safety and reliability. And achieve the purpose of saving energy and improving the service life of the equipment. After using Advantech's building automation system, the train station room operated very stably, saving customers a lot of energy.
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