基于FPGA的选择呼叫信号源设计  

Design of FPGA-based Select-call Signal Generator

作　　者：周德新[1] 杨代文[1] 王凯[1] 樊智勇[2] 

机构地区：[1]中国民航大学航空自动化学院,天津300300 [2]中国民航大学工程技术训练中心,天津300300

出　　处：《自动化仪表》2009年第5期68-70,共3页Process Automation Instrumentation

基　　金：天津市科技支撑计划重点基金资助项目(编号:07ZCKFGX01500)

摘　　要：基于FPGA的选择呼叫信号源主要应用于机载音频管理系统的地面测试设备中,具有飞机地面测定设备的选择呼叫功能。该信号源采用模块化的设计方法将选择呼叫代码的解码、DDS技术以及对选择呼叫信号发送时序的控制集成于一块FPGA芯片中,应用单片机控制USB模块识别/接收虚拟控制面板发送的数据。在机载电子设备自动测试过程中,可以根据需要精确稳定地产生选择呼叫音频信号,提高自动测试系统的可靠性。The FPGA-based select-call signal generator is mainly applied in ground test equipment of airborne audio management system, implementing the select-call function for aircraft grounding test equipment. In such signal generator, by using modular design method, the decoding of select-call code, DDS, and timing control of select-call signals are integrated in one FPGA chip. By adopting single chip computer, the USB module is controlled to identify and receive data from virtual control panel. In airborne electronic equipment automatic test process, the select-call signal generator produces precise and stable select-call audio signal in accordance with the requirement to enhance the reliability of the automatic test system.

关 键 词：选择呼叫信号 现场可编程逻辑门阵列 USB 直接数字合成器 虚拟仪器 

分 类 号：TN742.1[电子电信—电路与系统] V243.1[航空宇航科学与技术—飞行器设计]