Barcelona is the second largest city in Spain and is regarded as one of the leading European cities for thinking. He continued to meet new challenges, including the successful hosting of the 1992 Summer Olympics, demonstrating its charm. It is precisely because of this concept and the knowledge of the latest technologies in the transport services industry. For a long time, the city of Barcelona believes that the construction, maintenance, and improvement of public subway networks are of great social and economic value.
In 1924, Barcelona's first subway was built between LESSEPS and CATALUNA. Since then, the subway system has constantly updated with the latest technology. In 1971, with the advent of suspended conventional rails, Barcelona's subway system became the city's primary means of transportation.
The Barcelona Metro today consists of 5 trunk lines, 115 stations and 500 trains, with more than 1.1 million daily traffic. During the peak period, a five-car subway train can carry 1,000 passengers every 3 minutes. The total transport volume for an hour exceeds 60,000 passengers. The total transport capacity in a year exceeds 310 million person-times.
In order to improve the subway operation and safety conditions while improving the comfort of passengers, Barcelona Metro has made many technical improvements to trains and facilities. One of the most beneficial measures is to apply the Ethernet TCP/IP industrial technology to the existing IT network facilities of the subway for automatic control and remote monitoring. This combination improves the network reliability, communications, television monitoring and other fields of operation.
AGECONTROL: The technical consultant is responsible for the implementation of new technology in the Barcelona Metro AGE CONTROL. He was founded in 1976 and is a major engineering contractor in Spain. He is part of the AGE company and specializes in designing control and communication technology solutions. The company has designed and built a number of PLC, SCADA and DCS control systems for different industrial sectors, covering the oil, natural gas, water treatment and environmental protection, and energy industries. The company also specializes in network and cable facilities for the transmission of audio and video data signals. They also provide program design, network architecture design, communication system diagnostics and audio services.
Looking for the best solution AGECONTROL knows: Although PLC systems can fulfill many of the basic control requirements for industrial automation, their data acquisition capabilities are limited. More importantly, PLC systems are not easily compatible with IT networks. They require additional intervening components and further programming and support. This is not only inefficient but also uneconomical. AGECONTROL also knows that Barcelona Metro requires high-quality industrial systems that can simply and directly combine their existing equipment with existing TCP/IP networks and transfer data from the operating equipment to the management system. Don't mess with your existing system or operating state.
After market research, they found that the OPTO 22 SNAP Ethernet I/O can achieve this goal.
OPTO 22 SNAP ETHERNET I/O
The OPTO 22 SNAP Ethernet I/O designed for the Barcelona Metro includes a rack capable of accommodating up to 16 modules, each module providing two or four inputs. Contact or switch signal access digital module, sensor and variable control access analog module; serial communication module provides two independent two-way data communication port. Covering most stations and tunnels in the metro, the OPTO 22 SNAP Ethernet I/O system serves as a standard IP node in Barcelona's existing network structure. Important operating parameters can be transmitted to the management console of the Metro Control Center.
Wireless Communication Network The wireless communication network of the Barcelona Metro undertakes the transmission of remote data, remote control, audio, and video signals. This network is based on a backbone fiber. The optical fiber extends 81 kilometers in the subway tunnel. In some locations where fiber cannot be installed, the communication signal is transmitted using the Ethernet network radio station, which makes the subway highly reliable. In order to enhance its functionality, the entire system is also redundantly connected to the public digital ISDN telephone network, starting up in the event of an internal failure. In addition, when the demand for a certain network segment increases, the bandwidth can be increased.
All the key equipment and information of the subway in the subway control center must be returned to the subway control center, including: escalators and hydraulic passenger lift equipment; communication networks (such as telephone and two-way radio); television monitoring; vibration monitoring; smoke/gas gas/ Fire detection equipment; lighting; life-saving equipment.
OPTO 22 Work Network Monitoring of SNAP ETHERNET System OPTO 22 The SNAP ETHERNET system is used to detect the entire subway communication network, including: radio communication (for transmission of audio and video signals between stations), two-way communication between trains and stations, drivers Communication with maintenance personnel. Run OPTO 22 SNAP to make the system have self-diagnosis fault tolerance, which can detect multi-point fault or communication failure. And usually before the second point of failure occurs, the network system can detect and confirm a certain point of failure and then deal with it. With a sophisticated network monitoring system, the OPTO 22 SNAP ETHERNET system can recognize the complete system and acquire and send data from all connected devices to the Metro Control Center. This is to ensure that the network operation is optimized.
Equipment Monitoring and Management, Data Reading As mentioned previously, the SNAP I/O system module is connected to key subway systems and equipment through sensors. When any point in the system is faulty, the SNAP system can transmit the preset detailed information block containing the alarm content and related devices to the predetermined IP node in the management console of the network through the enterprise management system (on the UNIX platform). HP OPREVIEW), the operator of the Metro Control Center can immediately take notice of this information, initiate diagnostic procedures, conduct further operations, and begin to record events, accident reports, and network resets; then email to management.
Remote stations are equipped with CCTV in 115 stations. Each system contains many cameras. They are installed on rails/channels/ platforms. These cameras are connected to the monitor screen and there is an image recording device at the ticket sales office. There is also a video conversion system for switching different image channels and it can be displayed on the monitor screen in sequence.
All stations also have a common internal telephone system installed so that passengers can contact station personnel. Each phone is actually an extension of the local PABX switch board at each station. It contains an RS232 serial communication device using the V.24 protocol.
Barcelona Metro Requirements: When a passenger uses a telephone to inquire or report an incident, the camera provides the best viewing angle and immediately switches the picture to the video monitor display. During the entire conversation, the ticket office can see the details and record the image and dialogue at this time. That is, using either phone can send a signal to the video system and send it to the nearest TV camera.
To accomplish this task, a serial module is installed in the SNAP system connected to the V.24 outlet on the switchboard. The digital output module controls the switching of different video channels. When any serial module receives a signal from the switch board, the SNAP intelligent processor processes the signal, decides which camera signal to enter the video system, and sends a corresponding digital output signal, and simultaneously starts the video-audio recording The system records the dialogue between passengers and station personnel.
A few sectors of the revenue may think that the use of network technology is unnecessary and unwise. But the Ethernet TCP/IP industrial technology of the Barcelona Metro proved to be a wise investment.
Although the number of Ethernet I/O systems in the network is increasing, the cable and installation costs are negligible, and the security of system operation is improved, maintenance costs are reduced, and profits are enormous.
Thanks to the perfect combination of AGECONTROL and SNAP Ethernet I/O, it has greatly improved the running status of Barcelona Metro and also enhanced the reputation of the Metro Corporation. The company’s management and facilities are not only in Spain but throughout Europe, and are examples of other large transport companies imitating their studies.