Research On Two Out Of Two Safety Computing Platform Based On Common Computer

Computer interlocking System is the basic signal equipment which is to ensure traffic safety, the basic functions include the realization of interlocking functionality such as route selection, route locking and route release ,switch control, signal contrail, the supervision of track circuit and signal equipment, special interlocking function of Urban Mass Transit System , ensure the correct approach and safety of train operation.Currently the mature Computer interlocking System on the market include dual hot-backup system, two out of three system and clock synchronization double two out of two system. With the development of high-speed railway, the shortcomings of the above system begin to be felt. For example, restricted by the technology level and other factors, the clock frequency of clock synchronization double two out of two system can not be too fast. It can only be able to meet the design requirements of CI, TCC and so on. At the same time, the existing Computer interlocking System requires the use of dedicated computer systems and to design a dedicated circuit, the cost of such a system is very high.The task synchronization double two out of two system based on the common computer can effectively address these problems, so study of the task synchronization double two out of two system become an important topic of the development of Computer interlocking System.This issue is cooperation with the Beijing Jiaoda Microunion Tech. Co., Ltd. The purpose is to research, design and realize the task synchronization double two out of two system platform.This article focuses on the following:1. It researches and analyzes the existing Computer interlocking System structure, and provide reference for the task synchronization double two out of two system platform based on the common compute.2. It designs and realizes the task synchronization double two out of two system platform based on the common compute.3. It analyses the safety and reliability of the task synchronization double two out of two system platform, and compares with dual hot-backup system and two out of three system.