单片机温度控制系统上下限报器单片机温度控制系统上下限报警器单片机温度控制系统上下限报警器单片机温度控制系统上下限报警器.doc

大庆师范学院 本科生毕业论文 院 （系） 物理与电气信息工程学院 专 业 电子信息工程（自动化方向） 研 究 方 向 控制 学 生 姓 名 学 号 指导教师姓名 李瑞英 指导教师职称 讲师 201年 5月 20日  摘 要随着现代工业术的发展及人们对生活环境要求的提高，检测与控制温度。温度报警器的计与制作，了该装置设计与制作的具体过程及方法。温度报警器结构简单，可操作性强，广泛防止因温度升高而带来的不必要的损失。因机房内所的电子产品发热，在时间内机房温度升高超出设备正常温度，导致系统或产生火灾，这时温度报警系统就会发挥应有的功能。 本文的是采用温度传感器DS18B20的温度报警器，自动测量前环境温度，由单片机AT89C2051控制，并通过三位段数码管显示，当前环境温度超过此温度，系统发出报警采用AT89S52单片机做信号处理单元，其成本低廉，精确度较高，LCD1602显示测量数值，选用红外传感器采集人体信号，经过放大整形电路而后传送给单片机AT89S52来处理，最后该信号传送至LCD1602显屏。关键词：；AT89S52单片机；传感器 Abstract With the development of modern GongYeKe technique and the improvement of peoples life environment, detection and control of temperature is particularly important. The design and manufacture of the upper and lower temperature alarm, device to illustrate the detailed process and method of design and manufacture. The temperature alarm has simple structure, strong operability, wide applicability, can prevent the unnecessary loss due to temperature and. Of electronic products in the telecom room heat fast, room temperature in a short time beyond the normal temperature, causing the system to crash or to produce fire, when the temperature alarm system will play their functions. Is introduced in this paper using temperature sensor DS18B20 temperature alarm, automatic measuring the current environment temperature, controlled by single chip microcomputer AT89C2051, and through the three segment digital tube display, if the current environment temperature exceeds the temperature, the alarm system. USES the AT89S52 single chip microcomputer for the signal processing unit, its low cost, high accuracy, LCD1602 display measured values, use infrared sensor to collect the body signals, after amplification shaping circuit and then sent to MCU AT89S52, finally the signals to the LCD1602 display screen. Has reached to measure temperature, to prevent, to cu