智能时钟日历温度计.doc

毕业设计说明书 题 目： 智能时钟日历温度 　 计的设计 　 院 （系）： 专 业： 学生姓名： 学 号： 指导教师： 职 称： 　 摘　　要 目前温度计的发展很快,从原始的玻璃管温度计发展到了现在的热电阻温度计、热电偶温度计、数字温度计、电子温度计等等。随着科学技术的发展和现代工业技术的需要，测温技术也不断地改进和提高。由于测温范围越来越广，根据不同的要求，又制造出不同需要的测温仪器。DS18B20测量温度范围广，能达到－55～＋125可实现高精度测温 Abstract At present the thermometer has developed very rapidly, from the original glass tube thermometer to the development of the current heat resistance thermometers, thermocouple thermometers, digital thermometers, electronic thermometers, and so on. With the development of science and technology and the needs of modern industrial technology, temperature measurement technology is constantly improving and improving. As more and more wide temperature range, according to different requirements, and create different needs for the thermometer. In this paper, the design of a smart clock calendar thermometer for both track of time while the weather changes in temperature, convenient and application of smart clock thermometer on the calendar SCM (AT89C51) as the core, the use of temperature to the acquisition chip DS18B20 was carried out at room temperature Acquisition through TS1602-1 LCD screen to display, DS12C887 time clock chip to read. Clock Chip need to initialize a start, set up after the initial do not have to repeatedly set up and can accurately display year, month, day, real-time clock, less than 31 days of the month automatically adjusted, including leap year compensation, but also can set the alarm And through buzzer-ming was to suggest that circuit installation of four keys to control the temperature and time changes, respectively, through the selection key to amend the value of the revision can also modify settings, such as an alarm. DS12C887 selected chips with low power consumption, the external simple interface, high precision, stable and reliable work of the advantages that can be widely applied to the needs of high accuracy of real-time cloc