基于CAN网络的嵌入式软PLC系统环形缓冲研究

刘晓文; 陈春旭; 张靖; 张雷; 胡延军; 周兴

doi:10.13272/j.issn.1671-251x.2015.04.024

基于CAN网络的嵌入式软PLC系统环形缓冲研究

doi: 10.13272/j.issn.1671-251x.2015.04.024

刘晓文^{1, 2, 3},
陈春旭^{1, 2, 3},
张靖^{1, 2, 3},
张雷^{1, 2, 3},
胡延军^{1, 2, 3},
周兴^{1, 2, 3}

1.
中国矿业大学物联网（感知矿山）研究中心，江苏徐州221008
2.
矿山互联网应用技术国家地方联合工程实验室，江苏徐州221008
3.
中国矿业大学信息与电气工程学院，江苏徐州 221008

基金项目:

“十二五”国家科技支撑计划项目（2013BAK06B05）

详细信息

中图分类号: TD67
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- 被引次数: 0
出版历程
- 刊出日期: 2015-04-10

Research of circle buffer of embedded soft PLC system based on CAN network

LIU Xiaowen^{1, 2, 3},
CHEN Chunxu^{1, 2, 3},
ZHANG Jing^{1, 2, 3},
ZHANG Lei^{1, 2, 3},
HU Yanjun^{1, 2, 3},
ZHOU Xing^{1, 2, 3}

1.
Internet of Things (Perception Mine) Research Center, China University of Mining and Technology, Xuzhou 221008, China
2.
The National and Local Joint Engineering Laboratory of Internet Application T

摘要

摘要: 为降低嵌入式软PLC系统传输数据的误码率和丢包率，设计了嵌入式软PLC系统的环形缓冲区，建立了环形缓冲区数学模型，分析得到了环形缓冲区的状态方程、状态转移概率及其容量和被充满的概率通式。利用仿真得到不同条件下影响缓冲区容量大小的因素，得出在无数据丢失的前提下，缓冲区大小与数据输入流和输出流两者差值的关系：在其他条件不变的情况下，输入流速率与输出流速率的差值越大，所需要的环形缓冲区容量就越大。
- 嵌入式软PLC系统 /
- 环形缓冲区模型 /
- 环形缓冲区容量 /
- 数据输入流 /
- 数据输出流 /
- CAN总线
Abstract: To reduce the error rate and packet loss rate of transmission data in embedded soft PLC system, a circle buffer of embedded soft PLC system was designed, mathematical model of the circle buffer was established. The state equation and the state transition probabilities of the circle buffer were analyzed, and its capacity and the formula of probability of being filled were also discussed. At last, the factors affecting the size of the buffer capacity under different conditions were obtained by simulating, and the relation of data buffer size and the difference between the input stream and output stream were concluded under the premise of no data loss: in the case of other conditions unchanged, the greater the difference between input stream rate and output stream rate, the greater the needed capacity for circle buffer.
- embedded soft PLC system /
- circle buffer model /
- circle buffer capacity /
- data input stream /
- data output stream /
- CAN bus