Design And Implementation Of Test Software For Railway Signal Interlocking System

With the rapid development of electronic technology and computer technology,as well as the rapid development of the theory and technology of reliability and fault tolerance,the computer interlocking system has gradually replaced the electric interlocking system as the main development direction of the railway station interlocking system.Because the computer interlocking system is a real-time security control and protection system,the system has high reliability,security,and must meet the railway signal system fault oriented security principle.As the key software of computer interlocking system,the interlocking software affects the reliability and security of the whole system.Therefore,to ensure the quality of the computer interlocking system is an important part of the performance of the computer interlocking system.For a long time,the test method of the system has been used in the signal interlocking system of the station.This method has been used in the development of the computer interlocking technology.Using automatic test instead of manual test can be done to achieve the standardization,procedure,simple,so as to improve the work efficiency,shorten the test time,and can eliminate the interlocking test errors caused by the accident.In this paper,the test of interlocking software of railway signal interlocking system is described[1],and the various parts of the system are described in detail.Firstly,the computer interlocking system and the station signal system are summarized,and the status of the computer interlocking system is described.Secondly,the software and hardware structure of the computer interlocking system is illustrated with the example of the JD-IA computer interlocking system.Once again,analysis of the station signal field system,the system is modeled,and describes the test system algorithm,and the system design.Finally,the test system is applied to get the corresponding test data.The practice shows that,through the development of the software system,it is very important to find the defects of the interlocking system,especially the safety of the defects,and improve the reliability and safety of interlocking software.And it can improve the testing efficiency and reduce the testing workload.It has the repeatability,and can accurately reproduce the previous test procedure.It can reduce the human error and the technical requirements of the test personnel and reduce the testing cost.