某小型无人机飞控机的通讯系统设计  

The Design of multi-channel UART for Flight Control Computer System on UAV

作　　者：罗秋凤[1] 李洪冬 

机构地区：[1]南京航空航天大学 [2]空军驻南京地区军事代表室

出　　处：《微计算机信息》2007年第29期260-261,309,共3页Control & Automation

摘　　要：多串口通讯系统是组成无人机飞行控制计算机的重要部件,它是飞行控制计算机与遥控遥测系统、GPS、V/H传感器、检测与装订系统等进行通讯的接口。基于TMS320LF2407A的多串口通讯板卡是由TL16C554A、EPM7128SLC84和串口电平转换构成的,TMS320LF2407A的各类控制信号、地址和数据信号通过EPM7128SLC84CPLD生成TL16C554A需要的译码电路、读写控制逻辑、以及DSP和TL16C554A之间的其他接口逻辑。该多串口通讯卡具备3个RS232和1个RS422标准,是一款能与3.3伏TTL/CMOS逻辑电平特性兼容的4通道高速串口通讯卡。The multi-channel UART is an important interface of serial communication between the remote sensing ＆ control system, GPS, V/H sensors and flight control computer in unmanned aerial vehicle（UAV）. The paper discusses several ways how to design multi-channel UART. The 4-channel UART based on TMS320LF2407A is consist of TL16C554A,EPM7128SLC84,RS232 and RS422 conversion circuit. The CPLD of EPM7128SLC84 simply the interface logic circuit with TMS320LF2407A. In the paper,The electrical characteristic of RS232 and RS422 is given firstly, then multi-channel serial port＇s realization is discussed,finally coIrelatire program is presented.

关 键 词：异步收发器 无人机 EPM7128SLC84 TL16C554 

分 类 号：V24[航空宇航科学与技术—飞行器设计]