Applications Of Redundancy In Railway Signaling Disaster Prevention System

ABSTRACT:The railway signaling disaster prevention system monitors sudden-onset disasters, detects the dynamic of disasters all the time, provides timely and accurate disasters warning. So, the disaster prevention system of railway signaling with high reliability is an important equipment to ensure the safety of the railway.To improve the reliability of the railway signaling disaster prevention system, this paper summarizes the current status of domestic and international disaster prevention system of the railway signaling, adopts redundancy in railway signaling disaster prevention system. According to the requirements of the system and reliability, this paper uses the embedded microprocessor, which is taken as the core to design the hardware of system. It uses CAN bus as the communication channels between the various subsystems, which makes the system easy to install, maintain and expend. This paper takes a variety of anti-interference measures in the hardware design to increase the anti-interference ability of the system. In the software design, this paper transplants the Boot Loader for embedded system. Meanwhile, the paper makes the drive program for the CAN bus controller. Besides it uses the hot standby redundant structure, and realizes it by using the CAN bus, which effectively improves the system reliability.The feasibility of the scheme is proved through the system debugging and testing.