1、 摘摘 要要 随着科学技术的发展，监控系统对人们的生活影响越来越大。在生活中的各 个方面都涉及到监控技术。在本设计中，是以温度为监控研究对象并结合单片机 及接口技术,采用部分边沿科技设计的一个温度监控系统。利用温度数字传感器 DS18B20 采集温度，利用 CPU 处理后,通过 74LS47 将其显示在数码管上。且可以 通过串口设定密码和温度的上下限,当所测温度低于设定温度时，利用加热器加 热；当所测温度高于设定温度时,发出报警,并给出一定的控制信号. 本文主要阐述了温度采集模块，显示模块，控制隔离模块设计，温度采集模 块采用数字传感器 DS18B20；显示模块由三个八段数码管，74LS47，
2、ADC0808 等 组成；控制隔离模块由光电隔离器，双向可控硅整流桥、变压器等组成。最后针 对温控系统进行了实验仿真， 通过对仿真的分析表明本文所述的基于单片机的温 控系统的设计的合理性和有效性。 关键字关键字: : 单片机、传感器 DS18B20、温度监控系统、控制隔离电路 AbstractAbstract Along with the development of science and technology, the life influence of monitoring system for people are farther. In the aspect of each life
3、 people are concerned with monitoring technology. In the design, it is a temperature monitoring system which is to take temperature as to monitor the research object, and combine MCU and the interface techniques. In the system, we adopt the partial edge design of science and technology. passing thro
4、ugh 74LS47 it is able to show it to the figures tube up after using CPU handling. The system can set the last lower limit of cipher and temperature through button, when the temperature measured is low to sets temperature, we are using heater to heat up. When the temperature measured is higher than set temperature, the device generates to alarm, and gives certain control signal. This article mainly elaborated the temperature gathering electric circuit, the display circuit, the contr
