高炉冷却水温差高精度检测系统的研究与应用  

RESEARCH AND APPLICATION OF HIGH PRECISION DETECTION SYSTEM OF BLAST FURNACE COOLING WATER TEMPERATURE DIFFERENCES

作　　者：贾佳[1] 杨进 方挺[1] 

机构地区：[1]安徽工业大学电气信息学院,安徽马鞍山243000 [2]马钢第三炼铁总厂设备保障部,安徽马鞍山243000

出　　处：《巢湖学院学报》2015年第3期90-94,共5页Journal of Chaohu University

摘　　要：针对国内高炉冷却水温差检测系统测温精度不高的弊端,设计并开发了高炉冷却水温差高精度检测系统。检测系统由测温节点、温度采集终端与上位机构成,之间通讯采用RS-485,基于三线制Pt1000设计了比率电桥温度补偿电路,并结合A/D转换器AD7799,构成信号处理电路,提高了水温采集精度。In response to the defects of the low accuracy of domestic blast furnace cooling water temperature difference detec- tion system, this paper is aimed at designing and developing a blast furnace cooling water temperature difference detection sys- tem with high precision. The detection system consists of the temperature measurement node, the temperature data collection ter- minal and PC components, and RS-485 is adopted for communications between them. Based on the three wire system Ptl000, this paper designs the circuit of ratio bridge temperature compensation and with the combination of A/D converter AD7799 the signal processing circuit is composed, improving water temperature collection accuracy.

关 键 词：高炉冷却水 PT1000 高精度 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]