摘要
针对工业数据通信中通信不及时与可靠性低的问题,本文基于COBS(Consistent Overhead Byte Stuffing)算法构建一种工业数据通信协议,解决了数据通信中的同步问题,缩短了帧的长度,节约了比特资源。分析在工业噪声干扰下,该协议数据帧出错的概率与帧长、误码率之间的定量关系,给出已知误码率的情况下计算最优帧长的公式。在此基础上,利用协议可变帧长的特点制定自适应最优帧长策略,可进一步提高通信的效率。通过仿真与数值分析,说明该方法可以有效提高工业通信的效率与可靠性。
Based on consistent overhead byte stuffing（COBS） algorithm,a new industrial data communication protocol is proposed to improve the efficiency and reliability in industrial data transmission,which can solve the problem of synchronization,shorten the frame length,as well as save bit resources.Under the circumstance of knowing bit error rate,the quantitative relationship between the data frame error probability and the frame length is analyzed,so that the formula to calculate the optimal frame length is derived.In addition,the variable frame length feature of the proposed protocol is used to obtain an adaptive optimal frame length strategy,which can further raise the efficiency of the communication.Simulation results and numerical analysis verify the effectiveness of the proposed protocol with the optimal frame length.
出处
《计算机与现代化》
2013年第3期116-120,共5页
Computer and Modernization
关键词
一致开销字节填充(COBS)
工业数据通信
最优帧长
自适应策略
consistent overhead byte stuffing（COBS）
industrial data communication
optimal frame length
adaptive optimal frame length strategy
