中图分类号：V19、
文献标识码：A
DOI：10.19358/j.issn.2096-5133.2021.03.012
引用格式： 刘士全，曹晓斌，蔡洁明，等. 1553B总线电路冷备份使用情况下总线端口潜通路分析验证[J].信息技术与网络安全，2021，40(3)：67-71.

Latent path analysis test of bus port with 1553B bus circuit cold backup application

Abstract：In the application of 1553B bus devices in space system units, in order to increase the reliability of the stand-alone devices, two 1553B bus units are used. Two stand-alone devices′bus outputs are connected, a set of stand-alone devices powered up for use, a set of stand-alone devices powered outages in a cold backup state, two sets of stand-alone devices are cold backup for each other. When the devices functions normally, cold backup of each other can not affect each other. This article introduces the internal port structure of the 1553B bus circuit for this application, and the latent access problem of bus port under the condition of cold backup is tested and verified in detail. Through test and analysis, it is proved that the two 1553B bus circuits are stable and reliable under the condition of cold backup without mutual influence.

Key words :1553B bus；bus port；cold backup；test and verification