철도 소프트웨어 정량적 신뢰성 평가방안 연구

초록

Recently functions and complexity of embedded SW(software) for railway system have been increased rapidly, there is a growing percentage of potential deficiencies in the SW due to the cause of train accidents and delays. Especially since the fatal error due to the malfunction of SW during the railway operation is directly connected to human accidents, the validation on SW shall be performed by using various methods and the evaluation and verification on it must be available. In addition, the SW testing and verification activities in relation to the international standard for railway SW are already stipulated in terms of ‘HR : Highly Recommend ’. In this paper, we propose a study of the reliability evaluation methods that provide quantitative prediction of the inherent defects of the railway device embedded software by applying safety assessment procedures and methods in order to prevent potential failures of the railway software.