Safety‐critical systems are designed to prevent catastrophic consequences from failure, such as injury or death to humans and environmental damage. These must be carefully designed to ensure reliability requirements. The purpose of this paper is to identify the number of models in the reliability analysis of safety‐critical systems. To achieve this goal, we conducted a systematic review of 40 shortlisted studies. The selected studies are classified based on various techniques used in safety‐critical systems. This paper summarizes the literature review in the field of reliability of safety‐critical systems. The limitations of the literature are exquisitely represented. The international safety norms and applications of safety‐critical systems are discussed systematically in this paper. This paper emerges research trends, research challenges and insights of the researcher for future research direction in the area of safety‐critical systems.

中文翻译：

---

关键安全系统的可靠性：最新审查

关键安全系统旨在防止故障造成的灾难性后果，例如对人的伤害或死亡以及对环境的破坏。必须仔细设计它们，以确保可靠性要求。本文的目的是确定安全关键系统可靠性分析中的模型数量。为了实现这一目标，我们对入围的40项研究进行了系统评价。所选研究基于安全关键系统中使用的各种技术进行分类。本文总结了安全关键系统可靠性领域的文献综述。文献的局限性得到了很好的体现。本文对安全关键系统的国际安全规范和应用进行了系统地讨论。本文提出了研究趋势，