| CAN现场总线在地铁隧道显示系统中的应用 |
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| 引用本文： | 艾菡,程越,刘继达.CAN现场总线在地铁隧道显示系统中的应用[J].电子测量技术,2010,33(8):56-59,65. |
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| 作者姓名： | 艾菡 程越 刘继达 |
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| 作者单位： | 北京航空航天大学电子信息工程学院,北京,100191 |
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| 摘 要： | 介绍了地铁隧道显示系统的组成,采用基于CAN总线的通信网络替代原系统的RS485网络。阐述了新型的CAN网络的特点,使用C_CAN控制器的消息对象机制实现CAN总线网络中的CAN端口节点与各个列显CAN节点的通信,介绍了CAN网络通信程序的设计以及通信出错的检查与恢复方法。实际的数据传输测试表明,CAN总线通信网络完全满足地铁隧道显示系统对数据传输的设计要求,并大大提高了整个地铁隧道显示系统数据传输的可靠性和实时性。
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| 关 键 词： | 地铁隧道 列显示系统 CAN总线 C_CAN 消息对象 |
Application of CAN field bus in subway tunnel display system |
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| Ai Han,Cheng Yue,Liu Jida.Application of CAN field bus in subway tunnel display system[J].Electronic Measurement Technology,2010,33(8):56-59,65. |
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| Authors: | Ai Han Cheng Yue Liu Jida |
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| Affiliation: | Ai Han Cheng Yue Liu Jida(School of Electronic and Information Engineering,Beihang University,Beijing 100191) |
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| Abstract: | We have described the composition of subway tunnel display system.The communication network of subway tunnel display system is based on CAN bus instead of RS485.We have also described the features of CAN networks,how to achieve the communication of CAN ports and column CAN nodes by using C_CAN message objects,CAN network communication software design and communication error checking recovery method.Transmission tests showed that CAN bus communication network can satisfy the subway tunnel advertising display system and greatly improve the communication quality of the system. |
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| Keywords: | C_CAN |
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