一种飞机无线电高度表原位检测仪的设计

摘要

To realize the in-situ detection of the aircraft radio altimeter in out-field,the in-situ detector for the altimeter was developed by taking the industrial personal computer(IPC)PC104 and embedded processor STM32 as the system core,in which the design thoughts of the functional block diagram and each module,software functional partitioning and architecture are provided. The detector can implement the altimeter signal isolation and the voltage conversion,generate the altitude simulation signal and analog signal of the indicator,and provide the check signal of the altimeter to indicate the normal signal and alarm trip signal,and to measure the linear and nonlinear altitude voltage. The design has realized the simple and friendly human-com-puter interaction,and has been used and verified in the aviation test.%基于飞机外场原位检查无线电高度表的目的,采用PC104工控机和STM32嵌入式处理器为系统核心研制了高度表原位检测仪,包括功能框图、各模块的设计思路,软件功能划分和体系结构,实现高度表信号隔离和电平转换,产生高度模拟信号、指示器模拟信号、提供高度表检查信号,对正常、告警跳闸信号进行指示,对线性高度电压、非线性高度电压进行测量,该设计实现了简便友好的人机交互,已经在航空检测中使用验证.