Edge gateway is a kind of industrial embedded software & hardware integrated product that is developed by PCI Technology based on the IIoT architecture. The Product has rich communication I/O extension capability, high-performance computing and processing capability, to realize data exchange, protocol exchange, data isolation and edge computing. It is fitted with mature and professional design regarding reliability, stability and EMC protection capability, making it applicable to the industrial application scenario that interconnects and integrates multiple subsystems of urban railway traffic comprehensive monitoring system (ISCS).