火控系统BIT设计与实现

Design for Fire Control System BIT

采用层级BIT设计架构,建立了系统级和模块级BIT系统设计模型。设计了PBIT、CBIT、IBIT测试项探测函数、恢复函数等节点属性的统一数据结构。引入故障树理论设计了PBIT、CBIT、IBIT通用自动遍历故障树测试算法,可以实现多种火控系统的"自下而上"的节点测试和"自上而下"的故障诊断。在某火控系统预研项目的应用表明,本BIT系统的设计方案合理可行,易于维护,可显著提高通用火控系统的测试性和可靠性。

The design model of system-level and module-level BIT system are established based on hierarchical BIT design. The unified data structure of PBIT, CBIT, IBIT test item including detection function and recovery function are designed. Fault tree theory is introduced to BIT system and the PBIT, CBIT,IBIT universal automatic traversal fault tree test algorithm is designed,which can realize the bottom-up node test of integrated electronic system and top-down fault diagnosis. In a general fire control system advanced project application show that the scheme of online health monitoring and fault diagnosis based on BIT is reasonable and feasible,easy to maintain,and can improve general fire control system testability and reliability.