Reliability Evaluation of Interlocking Software Based on NHPP Model

Based on the ideas of Software Reliability Engineering,this paper analyzed the principle of NHPP modeling of the software reliability in detail,and evaluates the reliability of railway signaling computer interlocking software which is on the end,stage of development by using the NHPP model.The results are given to analyze the level of software reliability and provide scientific basis for the management and decision-making of computer interlocking system's development.