机载选择呼叫模拟系统设计

机载选择呼叫系统主要运用于地面塔台并通过高频或甚高频通道与某架特定飞机进行定向呼叫.根据机载选择呼叫系统所具备的功能进行模块化设计;用Altium2004软件,根据模块设计进行原理图地绘制;用C语言编辑单片机核心程序,实现代码对比功能;通过ISISProfessional软件进行选呼功能的仿真,实现代码对比、提示和复位;对电路板进行测试后发现,系统能够实现代码对比功能并且有声光提示且按下复位键能够重启程序;最后对机载选择呼叫系统成功模拟,能够进行飞机代码的对比,对比成功能够有声光提示并能复位,反之没有.

Airborne selective calling system is mainly used in ground control tower and carries out a directional call with a particular aircraft by HF or VHF channels. A modularized design is made according to the function of airborne selective call system;Altium2004 software is used to draw schematics according to the module design;C language is used to edit the MCU core program to realize code comparison function;ISIS Professional software is used to simulate selective calling function to realize the code comparison, hints, and reset;After testing the circuit board, it is found that the system can perform code comparison function and has sound and light hints, and pressing the reset can restart the program. Finally, the airborne selective call system is successful simulated, the aircraft codes can be compared, and the successful comparison can result in sound and light hints and reset, otherwise not.