基于DS18B20温度传感器的显示及报警系统【参考】.doc

综合课程设计报告 报 告 题 目 ：基于DS18B20温度传感器的 温度显示及报警系统 作者所在系部： 机械工程系 作者所在专业： 测控技术与仪器 作者所在班级： B09122 作 者 姓 名 ： 雷苏力 作 者 学 号 ： 20094012216 指导教师姓名： 康会峰、赵保亚 完 成 时 间 ： 2013年1月3日 北华航天工业学院教务处制  基于DS18B20温度传感器的显示及报警系统 摘 要 随着现代信息技术的飞速发展和传统工业改造的逐步实现，能够独立工作的温度检测显示系统应用于诸多领域。传统的温度检测以热敏电阻为温度敏感元件。热敏电阻的成本低，需信号处理电路，可靠性相对较差，测温准确度低，检测系统也有一定的误差。与传统的温度计相比，具有读数方便，测温范围广，测温精确，数字显示，适用范围宽等特点。选用89C52型单片机作为主控制器件，DS18B20数字温度传感器作为测温通过4位共阳极LED数码管传送数据，实现温度显示。通过DS18B20直接读取被测温度值，进行数据，89C52；温度传感器DS18B20；LED数码管；数字温度计 Abstract Along with the present information technologys swift development and traditional industry transformations gradual realization, able to work independently of the temperature detection and display system used in many other fields. Traditional temperature examination takes thermistor as temperature sensitive unit. Thermistors cost is low, needs the signal processing electric circuit, moreover the reliability is relatively bad, the temperature measurement accuracy is low, the examination system also has certain error. Compares with the traditional thermometer, what this design is based on the DS18B20 digital thermometer, it has the reading to be convenient, the temperature measurement scope is broad, the temperature measurement is precise, the digit demonstrated that applicable scope wide and so on characteristics. Used in the design STC89C52MCU as the main control device, digital temperature sensor DS18B20 as the temperature components of the anode through the four LED digital display tube parallel transmission of data, to achieve temperature display. This designs content mainly divides into two parts; first, to system hardware part design, including temperature gathering electric circuit and display circuit; Second, to the system software parts design, realizes temperature gathering and the demonstration using the C language. DS18B20 meas