the paper is a fault-tolerance design facing the application of the railway axis counting . in some aspects, a realization plan of 1 + 1 is different for the traditional method, which not only improved the reliability of the axis-counting system but also provides the ideas of fault tolerance design of the reliability design in other bad environment 论文是面向铁路计轴应用的容错设计,有些方面提出了不同于传统方法的1+1系统实现方案,这不仅使计轴系统的可靠性得到大幅度提高,而且可为其它恶劣环境下的可靠性系统设计提供容错设计思路。