| 基于矿井下含分支节点的CAN总线优先权分配 |
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| 引用本文： | 孙继平,郭继坤.基于矿井下含分支节点的CAN总线优先权分配[J].辽宁工程技术大学学报(自然科学版),2006,25(3):409-411. |
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| 作者姓名： | 孙继平 郭继坤 |
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| 作者单位： | 1. 中国矿业大学北京校区,信息研究所,北京,100083
2. 中国矿业大学北京校区,信息研究所,北京,100083;黑龙江科技学院,计算机与信息工程系,哈尔滨,150027 |
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| 基金项目： | 黑龙江省教育厅基金资助项目(10543043) |
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| 摘 要： | 为了解决CAN总线在矿井下覆盖面积和实时通信的问题，对CAN总线的协议进行了修改，采用了节点分支的方法，扩大了覆盖面积；在传输的帧中加入体现优先权的仲裁字段，根据煤矿监控节点的多少采用静态或动态优先权分配机制，解决了冲突问题。实践证明，该种方法在保证了实时通信的同时，覆盖面积扩大了10倍以上。因此，该系统能够适用不同类型煤矿的井下监控任务。
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| 关 键 词： | DCS CAN 静态优先权 动态优先权 实时传输 |
| 文章编号： | 1008-0562(2006)03-0409-03 |
| 修稿时间： | 2005年7月9日 |
Priority allotment of CAN bus based on underground node embranchment |
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| SUN Ji-ping,GUO Ji-kun.Priority allotment of CAN bus based on underground node embranchment[J].Journal of Liaoning Technical University (Natural Science Edition),2006,25(3):409-411. |
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| Authors: | SUN Ji-ping GUO Ji-kun |
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| Abstract: | To solve the problem of real time communication and underground covering area of CAN, the CAN protocol is modified. The measures of node embranchment are adopted, expanding the covering area and a priority promotion arbitration bits are added to transmission frame. According to the number of monitor nodes, the distribution mechanism of static or dynamic priority is adopted to solve the collision. Practice proves, this method not only assures the real time communication, but also expands the covering area above tenfold. Therefore, the system can be applied to many different types of underground mineral monitoring duties. |
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| Keywords: | DCS CAN static priority dynamic priority real-time transmission |
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