The application of multi-function interface MVB NIC in distributed locomotive fault detecting and recording system

Locomotive condition monitoring and fault diagnosis system is an important component of modern locomotive, it needs a reliable, high-speed communication network to ensure that the system´s reliable operation in the complex locomotive environment. The Controller Area Network (CAN) used in the existing distributed locomotive fault detecting and recording system is not suitable for vehicles bus, so the paper brought forward the scheme using the Multifunction Vehicle Bus (MVB). Firstly, it described the alteration of system structure and operating principle key design concepts in detail, next designed the multi-function interface MVB NIC using SOPC (system on a programmable chip) technology, given the realization of hardware and software, ultimately proceeded the network test in the lab, and verified the correctness and feasibility of the design. The improved network has farther transmission distance, higher rates, better reliability and real-time.