在工业及自动化领域,采用Internet/Intranet技术,将Web与数据库技术和现场监控系统结合使用将为实时监控系统带来新的变革。在此背景下,本文提出基于Web的实时监控系统信息访问模型,并针对这一模型结合实时系统特点提出了一种新的解决方案,实现了485串口通信、数据的存取访问和远程命令控制。 In the field of industry and automation, the Internet / Intranet technology, the Web and database technology and on-site monitoring system will bring real-time monitoring system with new changes. Against this background, this paper proposes a Web-based real-time monitoring system information access model, and proposes a new solution to this model combined with real-time system features to achieve a 485 serial communication, data access and remote command control .