基于STC89C51的新型液氮低温微创冷冻控制系统设计  

The new liquid nitrogen cryogenic minimally invasive freezing control system based on STC89C51

作　　者：王震[1] 田学隆[1] 童明伟[2] 王槐志[3] 

机构地区：[1]重庆大学生物工程学院,重庆400030 [2]重庆大学动力工程学院,重庆400030 [3]第三军医大学西南医院全军肝胆外科研究所,重庆400038

出　　处：《低温与超导》2013年第7期12-17,共6页Cryogenics and Superconductivity

基　　金：重庆市重点科技攻关项目(CSTC2010AA5049)资助

摘　　要：设计了一种新型液氮低温微创冷冻控制系统,详述了系统的控制原理及各功能模块的实现。采用热流平衡原理、PID技术与STC89C51单片机及外围控制电路对冷冻冻结面范围、液氮瓶压力及冷刀刀头温度进行实时控制和显示。应用结果表明:该系统运行稳定,可靠性高,操作简单。A new kind of liquid nitrogen cryogenic minimally invasive freezing control system was designed.The control principle of the system and the realization of the functional modules were described in details.The heat balance principle,PID technology and SCM STC89C51 and peripheral control circuit were used to real-time control and display the liquid nitrogen bottle pressure,frozen surface and temperature of head of cold knife.The experiment results show that the control system has stable operation,the high reliability and simple operation.

关 键 词：液氮 STC89C51单片机 低温冷冻 冷刀 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]