毕业设计-C51单片机在蓝宝石光纤瞬态高温传感器中的应用讲课.doc

毕业设计说明书 C51单片机在蓝宝石光纤瞬态高温传感器中的应用 作 者: 学 号： 学院(系): 专 业: 指导教师: 评阅人: 2014年6月 C51单片机在蓝宝石光纤瞬态高温传感器中的应用 摘要： 使用C51单片机创建温度检测系统，该系统基于Plank黑体辐射定律，分析了系统工作原理。将已标定过的蓝宝石光纤温度传感器同时置于乙炔焰热源所形成的恒温区域中进行静态标定，结果表明，测量范围从1200℃到2000℃，测量不确定度(精度)为1℃，获得温度传感器的动态响应曲线，其时间响应达30ms，并且重复性非常好。 关键词：C51单片机，蓝宝石传感器，红外测温仪 The use of sapphire fiber transient high temperature sensor C51 MCU As the current demand for high temperature measurement to high temperature (temperature limit) transient, high sensitivity and stable development of more mature past the thermocouple method is obviously not a modern high-temperature testrequirements. Thermocouple response time is slow, subject to electromagnetic interference, and can not work stable at high pressure and corrosive environments, and the temperature upper limit has been restricted. In recent years, due to the development of materials science and processing technology, the transient high temperature sensor in sapphire fiber-optic sensor technology has been rapid development and wide application. Create a temperature detection system to the C51 MCU.The system is based on the Plank blackbody radiation law, the system works. Sapphire fiber temperature sensors have been calibrated at the same time placed in a region of constant temperature heat source of the formation of the acetylene flame static calibration results show that the measuring range from 1200 ℃ to 2000 ℃, the measurement uncertainty (precision) to 1 ° C, to obtain the temperature the dynamic of the sensor response curve, its time to respond to up to 30ms, and very good repeatability. The single-chip design, included clock circuit, power circuit, reset circuit, display circuit, and C + + programming microcontrollers. Keywords： C51,Sapphire-fiber temperature sensor, Infrared themometer 目 录 1 引言 1 2 方案设计 2 2.1传感器工作原理 2 2.2标定系统组成 2 2.3 K值标定原理 2 2.4 K值的计算 3 3硬件电路设计 6 3.1单片机模块设计 6 3.1.1 AT89C51简介 6 3.2复位电路 7 3.3时钟