Xuzhou Metro Line 6 starts from Mount Huangshan Road Station and ends at the East High speed Railway Station, connecting the high-speed railway station, the New Town Administrative Business Center, Tongshan District Center and other large passenger flow distribution points. The total length of Xuzhou Metro Line 6 is 22.9 kilometers, with an average station spacing of 1.5 kilometers, a maximum station spacing of 3.072 kilometers, and a minimum station spacing of 0.809 kilometers. All of them are underground, with a total of 16 underground stations, including 6 transfer stations.

The control center network security platform, station security platform, vehicle depot security platform, and parking lot security platform are networked using our Xia Yu M12 industrial switch X61010-M and industrial grade fiber optic transceiver X1111N-21LC-I to achieve the access, transmission, and aggregation of video data after collection to the security management workstation, effectively ensuring the stable operation of the subway security platform.

1、 PIS system introduction: Passenger Information System, abbreviated as PIS. It is a service system in the subway that provides passengers with various information. The passenger information system is a system that relies on multimedia network technology, with computer systems as the core, and stations and onboard display terminals as the medium to provide information services to passengers. Under normal circumstances, the passenger information system provides operational information such as boarding instructions, first and last train service times, train arrival times, train schedules, and manager announcements, as well as public media information such as government announcements, travel references, media news, live events, and advertisements. In emergency situations, based on the principle of prioritizing operational information, it can provide dynamic auxiliary prompts to guide passengers to safely and conveniently ride the rail transit through correct service information.  
PIS System Solution for Rail Transit Industry

2、 The network requirements require Ethernet switches to be connected in the network in the following two ways. When networking according to method one, Ethernet switches should be able to achieve data exchange between Ethernet devices connected to different Ethernet switches; When networking according to method two, Ethernet devices between two VLAN1 cannot achieve data exchange, while Ethernet data between VLAN2 can be exchanged.  
PIS System Solution for Rail Transit Industry

3、 We use customized board switches for the vehicle network design, with 5 M12 interfaces on the front panel, including 4 100Mbps M12 interfaces for adjacent car board devices and 1 as a device debugging port; The backplane has 7 ports and uses European 48 pin connectors to connect monitoring probes, broadcast speakers, LED playback screens, and other devices. The IREES2000 is a high-performance product with Bypass and POE functions. The Bypass function effectively prevents transmission interruptions caused by power outages or failures of devices in the vehicle cascade network; The whole machine needs to use industrial grade chips and dedicated interfaces, multi-layer board design, and complete interface protection to effectively ensure the reliability of the whole machine. It must comply with the safety standards for industrial information technology equipment and meet the relevant electromagnetic compatibility standards of EN50121. The whole machine adopts industrial switch chips and dedicated interfaces, multi-layer board design and complete interface protection to ensure the reliability of the whole machine.  

4、 Advantage 1 of the solution: IREES2000 is equipped with link aggregation function, which enhances the reliability of equipment and links, ensuring the reliability of communication across the entire network; 2. IREES2000 industrial switches use industrial grade chips, which not only ensure the transmission capacity of the switch, but also increase the stability of the switch during operation. 3. The harsh physical environmental conditions have strong adaptability, with operating temperature (-40 ℃ -85 ℃) and storage temperature (-40 ℃ -85 ℃). The power supply design has passed EMC Level 4 certification to ensure the stability of the equipment.. 5. Provides multiple management methods such as CLI, TELNET, WEB, and also supports Thick Stone NIS network management software, avoiding the complexity of device configuration.

The Wuhan Metro Line 11 starts from the Sino French Ecological City in the west and ends at Gedian South Station in Ezhou City in the east, with a total length of about 68 kilometers. It spans across Caidian District, Hanyang District, Hongshan District, Wuchang District, Donghu High tech Zone, and Gedian Development Zone in Ezhou City, with 34 stations. It is the longest rail transit line in Wuhan City and a theme line for urban development zone rail transit that guides the development of the East West New City cluster and supports the construction of the urban sub center.

The vehicle communication network adopts our customized board industrial switch X91010-M, with 5 M12 interfaces on the front panel, including 4 100Mbps M12 interfaces for adjacent car board equipment and 1 as equipment debugging port; There are 5 ports on the backboard, using European 48 pin connectors to connect monitoring probes, broadcast speakers, LED playback screens, and other devices; The whole machine adopts industrial grade chips and dedicated interfaces, with multi-layer board design and complete interface protection, effectively protecting the reliability of the whole machine.