CAJ | 학술논문

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。
침대국내고로냉각수온차검측계통측온정도불고적폐단,설계병개발료고로냉각수온차고정도검측계통。검측계통유측온절점、온도채집종단여상위궤구성,지간통신채용RS-485,기우삼선제Pt1000설계료비솔전교온도보상전로,병결합A/D전환기AD7799,구성신호처리전로,제고료수온채집정도。
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 Pt1000, 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.