膜制氮系统中氮气浓度监控系统的设计  

Design of online monitor and control of nitrogen concentration in membrane nitrogen system

作　　者：邹军华 蔡永桥[2] 周正权[2] 陈晓文[2] 崔矿庆[2] 

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300452 [2]中海油能源发展股份有限公司油田建设工程分公司海管技术服务中心,天津300452

出　　处：《微型机与应用》2014年第10期23-26,共4页Microcomputer & Its Applications

摘　　要：针对膜制氮系统设计了一套氮气浓度的在线监测与控制系统,包括硬件设计、选型和软件设计。该系统通过测得所制氮气中主要杂质氧气的浓度间接测得氮气浓度,利用氧气传感器将氧气浓度转变成电流信号,信号经调理后送至MSP430G2533单片机处理。单片机的输出一方面用于控制电磁阀和调节阀,另一方面用于LED现场显示,从而达到实时监测与控制的目的。系统具有键盘输入及氮气浓度显示功能,可以实现远程监测与自动控制。实验表明,系统所制氮气纯度可达95%以上。该设计成本低,操作方便,运行稳定,性能可靠,精度较高。In view of the membrane nitrogen generating system , this paper designs a set of on-line monitoring and control system of nitrogen concentration , including the hardware design , selection and software design . In this system , the nitrogen concentration is measured indirectly by measuring the concentration of the main impurity oxygen in nitrogen gas . Using oxygen sensor switch the oxygen concentration into current signal , then the conditioned signal is sent to the MSP430G2533 MCU , the output of the single on the one hand is used to control the electromagnetic valve and control valve , on the other hand for the LED local display , so as to achieve the purpose of real-time monitoring and control . The system has the function of keyboard input and the display of nitrogen concentration , it can realize remote monitoring and automatic control . Experiments show that the purity of ni-trogen made by this system can reach more than 95%. The design is low cost , easy operation , stable running , reliable performance and high precision .

关 键 词：浓度 监测 控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]