Automatic testing platform for train operation control system safety-critical software

Abstract

The invention relates to the field of rail transportation, particularly to an automatic testing platform for a train operation control system safety-critical software. The automatic testing platform comprises a modeling subsystem, a test path generation subsystem, a combined cover subsystem, a communication interface subsystem, a test results analysis subsystem and a data management subsystem. The modeling subsystem is used for building a basic signal model base of the train operation control system and a specific measured functional model. The test path generation subsystem generates the test path through the graph covering algorithm. The combined cover subsystem combines scenario variables on the basis of the test path to generate testing cases. The communication interface subsystem generates testing case data to the device under test and collects output data of the device under test. The test results analysis subsystem analyzes the data in the test process and generates the test result report. The data management subsystem centrally manages the data and files which are necessary for the test platform running. Aiming at the train operation control system safety-critical software, the automatic testing platform is capable of effectively and comprehensively covering the test scenario, improving the test efficiency and reducing the test cost.

Description

technical field [0001] The invention relates to the field of rail transit, in particular to an automatic test platform for safety-critical software of a train operation control system. Background technique [0002] The train operation control system, referred to as the train control system, is an important part of ensuring the safe operation of trains in high-speed, high-density environments and improving transportation efficiency. The modern train control system has gradually developed from a simple combination of track circuits, locomotive signals and other equipment to an integrated automation system with complete functions, clear layers, and integrated operation control and automatic driving. During this process, software is widely used in train control systems, and more and more safety-related functions are transplanted from hardware to software, making train control system software "safety-critical software". The safety-critical software of the train control system ha...

AI Technical Summary

Problems solved by technology

[0006] (1) The simulation platform has abstract scenes that are not easy to physically represent, such as during the switch conversion process, it is easy to miss the test scene

[0007] (2) The test cases of the simulation platform rely on the experience of relevant projects and experts. The differences in projects and the subjectivity of experts make it difficult to guarantee the rationality of the test cases. There may be repetitions, omissions or errors in the simulation scenarios, and some security scenarios are difficult to cover. Lay hidden safety hazards for the operation of the train operation control system;

[0008] (3) The cost of the simulation platform is high, the maintenance and update of test cases, the recording and analysis of test results, etc. all rely on manual work, it is difficult to prevent human error, and the test efficiency is low

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