毕业设计温度传感器在恒温恒湿箱中应用.docVIP

上海XXXXXXXXXX学校 毕业设计（论文） 温度传感器在恒温恒湿箱中的应用 姓 名： XXXXXX 系 部： 医用电子信息系 专 业： 医用电子仪器与维护 班 级： XXXXXXX 指导教师： XXXX 完成日期 2011年6月7日 温度传感器在恒温恒湿箱中的应用 摘 要 本文主要设计基于Pt100铂电阻温度传感器在恒温恒湿箱中的温度测量系统。温度是被广泛用来测量的物理量，在恒温恒湿箱中温度测量是重要的组成部分。热电阻、热敏电阻、热电偶、二极管都可以用来测量温度和控制温度。出于传感器的感温精度、线性、稳定性、成本、生产过程等因素的考虑，Pt100铂电阻渐渐的取代了其他类型的传感器。铂电阻的测量范围-200℃至+650℃，完全可以满足恒温恒湿箱中的温度要求。 典型的温度测量过程分为收集采集环境温度信号，经过放大器吧小信号放大，经过A/D转换器吧模拟信号转换成数字信号，经单片机处理显示在液晶屏上，通过键盘控制箱体内温度，再由上述过程把结果反馈到液晶屏上。 本文开始对铂电阻温度测量作了概述，之后对整体设计思路进分析，再通过硬件软件两方面整理，最后进行测试。 关键词：Pt100，铂电阻传感器，恒温恒湿箱温度测量 Temperature Sensor In The Case Of Constant Temperature And Humidity ABSTRACT In this paper， design is based on Pt100 platinum resistance temperature sensor in constant temperature and humidity box temperature measurement system. Temperature is widely used to measure physical quantities， measured in constant temperature and humidity chamber temperature is an important component. Thermal resistance， thermal resistance， thermocouple， diode can be used to measure temperature and control temperature. Temperature sensors for precision， linearity， stability， cost， production process and other considerations， Pt100 platinum resistance gradually replaced the other types of sensors. Platinum resistance measurement range -200 ℃ ~ +650 ℃， constant temperature and humidity box can meet the temperature requirements. The typical temperature measurement acquisition process is divided into temperature collected signals， small signal amplification through the amplifier it， after A / D converter， right analog signals into digital signals， the microcontroller processing displayed on the LCD ， keyboard control cabinets by temperature， The process then the results fed back to the LCD . This began an overview of platinum resistance temperature measurement， then the overall design concept into the analysis， then finishing by both hardware and software， the final test. Key words Pt100; platinum resistance sensor; Humid