Research And Realization On Software Testing Technology Of Train Control Center System

As the core of ground equipment of CTCS-2/3,the Station Train Control Center requires high reliability and safety. Testing is an important part of quality and safety assurance in the process of development and production. Before the Train Control products start operation, a rigorous testing is strongly needed in the period of R&D and Engineering Applications. Currently, an artificial testing method with low efficiency and long period is barely applied. Meanwhile, the randomness test and case also demand a strong dependence on personnel. Above all, the artificial testing method is unable to meet the needs of train control center project in large scale applications. In order to ensure product quality, this paper is dedicated in studying software testing method of Station Train Control Center with high efficiency, accuracy.The domestic and foreign safety-critical software testing method is firstly talked in the paper. After the introduction of the structure of Train Control Center System and its function, an automatic Train Control Center application software testing program based on non-invasive black box model is designed, combined with software testing life cycle in different stages.On the basis of the analysis of the Train Control Center software testing requirements, we combined the characters of artificial testing and automatic testing in order to realize the goal of Active transponder message automatic test. During that period, the Active transponder Telegram is automatically generated based on the algorithm of boundary value analysis of black box thinking and equivalence partitioning method. The simulation environment is built, the automatic execution of the test is driven by the data-driven of the Automatic testing framework in the comprehensive testing platform.Finally, the testing result is given by comparing the difference between test data and actual transponder message. It has been proven that the Automatic Train Control Center software test platform is not only accurate, but also improves the efficiency of Active transponder message greatly.The Automatic recording of testing result also played a key role in discovering product defects and system upgrading.