一种多串口通信冲突回避与数据同步方法  

A Method of Collision Avoidance and Data Synchronization in Multi Serial Communication

作　　者：李昊昱 缪炜涛[1] 郭玉洁 高怡寒 王凯悦 LI Haoyu;MIAO Weitao;GUO Yujie;GAO Yihan;WANG Kaiyue(AVIC Xi'an Aeronautics Computing Technique Research Institute,Xi'an 710068,China)

机构地区：[1]航空工业西安航空计算技术研究所,陕西西安710068

出　　处：《通信电源技术》2020年第24期103-104,108,共3页Telecom Power Technology

摘　　要：一般串口通信方式是外部设备与计算机之间点对点进行数据传输,但当某个外设与多个设备进行并联串口通信时,则会面临数据收发冲突和数据相互干扰等难题。传统的串口冲突回避处理方法是采用数据收发握手,数据传输过程速度慢且难以维护。因此通过对串口通信过程进行时间同步和时间分片的处理,解决了机载设备多路串口并行连接造成的数据冲突以及实时同步问题。The general serial communication mode is point-to-point data transmission.However,when a peripheral communicates with multiple devices in parallel,it will face data receiving conflict,data mutual interference and so on.The traditional serial port conflict avoidance method is to use the data transceiver handshake.The data transmission process is slow and difficult to maintain.In this paper,through the process of time synchronization and time slicing,the data conflict and real-time synchronization problems caused by multi-channel serial port parallel connection of airborne equipment are solved.

关 键 词：多路串口通信 数据同步 时间校准 时间分片 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]