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Research on Automatic Test Applied in CBTC Based on TTCN-3

Author: ChenXiaoBo
Tutor: NingBin
School: Beijing Jiaotong University
Course: Traffic Information Engineering \u0026 Control
Keywords: CBTC TTCN-3 Heuristic algorithm Combinatorial Testing Functional test
CLC: TP311.52
Type: Master's thesis
Year: 2008
Downloads: 95
Quote: 1
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Abstract


With the rapid development of computer technology, communication technology and control technology, communication-based train control (CBTC) system came into being, CBTC system to improve the efficiency of train operation and higher security, maintainability, better, and therefore become an international on research and construction of hot spots. CBTC system is a safety-critical system that requires high security and reliability, before application must be complete testing. Train operation control system testing methods can not meet the the CBTC system efficient and comprehensive test requirements, automatic test system through computer simulation technology and advanced testing techniques, can greatly improve the efficiency of the test, to reduce the cost of testing. Automatic generation of test cases automated testing very important and can save the test of time, to expand the capacity of the test personnel, plays an irreplaceable role in many areas of the test. In addition, the impact of factors that lead to wrong test automatic positioning can greatly improve the automatic test. This paper CBTC system analysis, the establishment of TTCN-3-based automated testing framework and model, and a heuristic algorithm to achieve automatic positioning of the test cases automatically generated and cause testing errors influencing factors. Completed the following tasks: (1) establish a a CBTC simulation test system, and added to the the CBTC original equipment the principle display and simulation management unit. The principle display and simulation management unit makes the the CBTC system function test is more flexible, but also makes the testing process and the results of a higher degree of visualization. The CBTC system introduced two test modes, controlled mode and autonomous mode operation of simulation snap. (2) use a combination of test methods, to create a combination of CBTC system test model, and propose a solution space tree-based heuristic algorithm to automatically generate a combination of test cases covering the two-factor or multifactor, according to the results of the test The position of the test error factors. The final will automatically generate functional test applied to the the CBTC ATP unit covering the test case of a combination of two factors, and a heuristic algorithm to locate the cause testing errors influencing factors. (3) constructed using the the CBTC ATP unit test suite TTworkbench TTCN-3 test environment automatic test framework based on TTCN-3 test environment. TTCN-3 GFT definition of the testing process, as well as the generation and execution of test cases. Proved by simulation tests on the CBTC ATP unit using this kind of automatic testing method can efficiently generate test cases, and can achieve rapid positioning of the test error factors, and high feasibility.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Software Engineering > Software Development
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