理工大学基于单片机的冰箱温度控制系统毕业设计.doc

本科毕业设计说明书 基于单片机的冰箱温度控制系统设计 DESIGN OF REFRIGERATOR TEMPERATURE CONTROL SYSTEM BASED ON SINGLE-CHIP 学院（部）： 电气与信息工程学院 专业班级： 自动化08-5班 学生姓名： X X 指导教师： X X X 讲师 2012年 05月 30日基于单片机的冰箱温度控制系统设计 摘要 生物贮存设备是生命科学等领域必备的重要基础设备。医用特种冰箱是一种用于医疗行业冷藏血液，也可用于冷藏药品、试剂、疫苗、生物制品的重要设备，其温控器要求具有高控制精度、高可靠性，并应具有必要的报警、抗干扰措施和实时记录温度的措施。 本文针对其他冰箱温度控制系统的特点，研制开发了一种结构简单，工作稳定的新型高精度医用特种冰箱温度控制系统。 DESIGN OF REFRIGERATOR TEMPERATURE CONTROL SYSTEM BASED ON SINGLE-CHIP ABSTRACT The biological storing equipment is the important basic equipment which is essential to the domains of life science etc. The medical refrigerator is a kind of important equipment which can be used in the industry of medical treatment to refrigerate blood, as well as drug, reagent, bacteria and biological products. Temperature controller of medical refrigerator is requested to have high control precision, great reliability, and should have necessary measures of alarming, ant jamming and recording temperature in real-time. This text directs against the peculiarity of the temperature control system of other refrigerators, it is of simple structure to develop one, the special refrigerator temperature control system of the steady new-type high-accuracy medical use that work. The system used AT89C51 micro controller for the temperature real-time acquisition and control ,With the main parts-4 group of temperature examination signals, the LED display with 4 bits and 7 segments, 4 group key signals, 2 group of switch measures, 3 group of 220V load output which was isolated by relay of solid state, a group of alarming circuit as well as the watch-dog protection and so on, this system possesses the function of refrigerating, protecting, measuring, alarming and printing etc. KEYWORDS：89C51 micro controller， edical specialty refrigerators， temperature control system （1）传统的温控产品 （2）改进的温控产品 1954年由沈阳医疗器械厂生产的200升单门冰箱：1956年开始，卫生部门的一些医疗器械厂开始具备了电冰箱生产能力，并投入了小批量生产，80年代初电冰箱产量连年翻番，1983年产量约18万台，1