| 基于冗余技术的烟气排放连续监测系统 |
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| 引用本文： | 张印强,程明霄.基于冗余技术的烟气排放连续监测系统[J].化工自动化及仪表,2011,38(9):1090-1093. |
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| 作者姓名： | 张印强 程明霄 |
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| 作者单位： | 南京工业大学自动化与电气工程学院,南京,210009 |
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| 摘 要： | 介绍了基于冗余技术的热电厂烟气连续排放监测系统的设计方案,阐述其冗余设计原理以及计算机与PLC通信的实现方法,并给出数据采集程序和利用软件＂看门狗＂进行故障识别及自动切换的关键技术。实际运行表明,系统可以在500ms以内完成主站与从站的冗余切换,故障率减小为原来的1/3,可靠性较高。
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| 关 键 词： | 烟气排放 监测系统 冗余 数据采集 蠕动泵 “看门狗”程序 |
Design of Redundancy-based CEMS |
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| ZHANG Yin-qiang,CHENG Ming-xiao.Design of Redundancy-based CEMS[J].Control and Instruments In Chemical Industry,2011,38(9):1090-1093. |
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| Authors: | ZHANG Yin-qiang CHENG Ming-xiao |
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| Affiliation: | ZHANG Yin-qiang,CHENG Ming-xiao(College of Automation and Electronic Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | The design scheme for redundancy-based CEMS(continuous emission monitoring system) was presented,including the principle of redundancy design and the method for communication between PLC and computer as well as the key technology of employing watchdog for the fault identification and the automatic switching.The application in practice shows that the redundancy switching between master and slave stations can be finished within 500s,and fault rate can be reduced to one third of the original because of its hig... |
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| Keywords: | CEMS redundancy data acquisition peristaltic pump watchdog program |
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