直升机操纵台的BIT功能设计

为了提高系统的易测试性,保证飞行安全,在该直升机操纵台硬件设计中,针对各个功能模块的特点,相应地采用了多种BIT(Build-in Test,机内测试)技术,如余度BIT、环绕BIT等技术,并在微控芯片软件中嵌入了自检测模块,全面完整地实现了系统的自检测;同时利用扩展flash存储芯片实时保存系统运行数据和测试信息,可通过串口上传至上位机,为故障分析提供了便利;采用Visual C++编程语言,结合专家系统开发了一套上位机检测软件,用于操纵台故障的智能诊断。

Design of BIT Function of Helicopter Control Console

In order to improve the testability and flight security,in this design of helicopter control console,various BIT(Build-in Test) techniques,such as redundancy BIT and circle BIT techniques,were employed according to the features of each function module.And with the self-test program embedded in MCU,the complete self-test of the whole system is achieved.An extended flash memory chip was used to save system data and test information,which conveniences the fault analysis.Combining with expert system,an upper co...