基于 AT89S52 单片机 DS18D20 温度湿度传感器的设计摘 要在现代冶金、石油、化工及电力生产过程中，温度是极为重要而又普遍的热工参数之一，在环境恶劣或温度较高等场合，为了保证生产过程正常安全地进行，提高产品的质量和数量，以及减轻工人的劳动强度、节约能源，要求对加热炉炉温进行测、显示、控制，使之达到工艺标准。如何更快、更准确的控制所需的温度是温度控制技术的关键。本设计根据设计要求，采纳功能齐全的 protel DXP 作为绘制原理图工具，PCB 板作为开发板的温度检测器。本系统采纳现在流行的 AT89C52 单片机，配以湿度传感器，温度传感器，通过 A/D模数转换等进行系统控制。本设计还加入了常用的数码管显示及状态灯显示灯常用电路，使得整个设计更加完整，更加灵活。该设计整体结构小巧，便于携带。 关键字：AT89S52 单片机；DS18D20 温度传感器；继电器；湿度传感器Multi-function Temperature DetectorAbstractIn modern metallurgy, petroleum, chemical and power production process, the temperature is extremely important and universal thermal parameters of the environment or in high temperature and so on, in order to ensure normal production process carried out safely, improve product quality and the number, as well as reduce the labor intensity, energy conservation, the requirements for measuring the temperature of the furnace, display, control, to meet the standards process. How to faster and more accurate temperature control required for temperature control technology is the key. In accordance with the design requirements of the design using full-featured protel DXP as a schematic drawing tools, PCB board as a development board temperature detectors.The present system is popular single-chip AT89C52, with DS18B20 temperature sensor, A/D converter module, single-chip control of the control system. Through their own temperature settings, and compare the actual temperature, which determine whether to start the relay, relay start, to determine whether ...
