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控制领域中的分布式监控系统具有节点多、传输距离远以及现场工作条件恶劣等特点,因此需要一种能够支持多节点、远距离通信以及传输信号安全可靠的总线构成网络。结合RS485总线在实际监控系统中的应用,文章设计出了满足上述要求的智能型RS485总线接口,并在实际使用中收到了较好效果。
The distributed monitoring system in the field of control has the characteristics of many nodes, long transmission distance and bad working conditions in the field. Therefore, a bus network that can support multi-node, long-distance communication and safe and reliable transmission signals is needed. Combined RS485 bus in the actual monitoring system, the article designed to meet the above requirements of the intelligent RS485 bus interface, and in actual use received good results.