Realizing a Centralized Monitoring and Management Solution for Expressways in Hebei Province, China
Industry Application: Highway Management
Industry Sector: Transportation
Location: Hebei, China
The fragmented development of the Langzhuo Expressway has resulted in the road system being operated as multiple separate systems. Consequently, key infrastructure such as video surveillance, electric power monitoring, equipment monitoring, and other systems operate independently, with no resource sharing or exchange among them. This requires many workers to operate each individual system, resulting in inefficient management and high operation costs.
- Centralized management for a distributed network architecture
- Stability in a harsh environments with high humidity and extreme temperatures
- EKI-9628G-4CI: 24GE+4G Combo L3 Managed Ethernet Switch; -40~75°C operating temperature
- EKI-7710G-2CI: 8GE+2G Combo Managed Ethernet Switch; -40~75°C operating temperature
- EKI-1521CI: 1-port RS-232/422/485 Serial Device Server; isolation and a wide operating temperature
The solution consists of 3 VLAN areas connecting three different types of equipment. VLAN11 is connected to local coders/decoders in the control center; VLAN12 is connected to serial device servers and others; and VLAN13 is used for the management and setup of switches. The Layer 3 switch serves as the communication link between these VLANs.
Benefits and Advantages
The system diagram above depicts the proposed solution for the overall network architecture. The data are divided into two separate routes for transmission after the video streams pass through the video splitter. Then, the video data travel through the ring network and are decoded at the end before being visualized on one of the display screen.
The video streams, transmitting via multicast, require a reliable switch that supports IGMP snooping. The EKI-7710G-2CI industrial switch was chosen because of its multicasting functionality and ability to operate in environments with high humidity and extreme temperatures, such as in tunnels, thus ensuring stable and fast transmission of video streams.