| With the continuous development of network control, TCN builds a platform for VCU and vehicle equipment to share information.Remote Input and Output Module (RIOM) is a widely used TCN device in EMU and metro, which typically represents a structure of train network device. RIOM is a network interface between train non-intelligent devices and TCMS. By means of the RIOM controlling, VCU can accomplish the data acquisition and configuration of train non-intelligent devices, including medium voltage electrical system and sensor system.So it’s important for TCMS to ensure the reliability and safety of I/O in RIOM, which means ensure the information security of electrical equipment. However, currently in China, thousands of EMUs’RIOMs rely on foreign manufacturer for system integration, and researches internal is almost blank. So it’s meaningful for to acquire independent intellectual property rights of TCN Device, including RIOM.According to a large scale of literature reading, an architecture of RIOM is proposed in the thesis, which consists of CPU, MVB, DI/O and AI/O with VME as the backplane. CPU operates the Vx Works system and achieve the function of VME Master, signal analysis and external interface service. MVB unit manages the communication with TCMS, which embed a MVB protocol stack in FPGA according to IEC61375-1. DIO/AIO, as the interfaces of non-intelligent device, take full advantages of safety IO and redundant port technology.A solution for RIOM Interfaces, VME and DIO/AIO is detailedly described in this thesis, in the view of physical layer, data link layer and application layer access. By means of EDA and FMS, A VME Master and Slave, which meets standard IEEE1014. Further, according to the principle of reliability, a safety I/O is included in RIOM by means of structural redundancy and data redundancy, along with a series of analysis to improve port reliability.Finally, an experiment platform is built to testify the function of RIOM, and the results shows that RIOM functions well in remote input and output control, and a real-time transmission between TCMS and non-intelligent devices is achieved. |
