温湿度传感器的设计.docVIP

摘 要 SHT11是贴片封装型的数字温湿度传感器。可以在一块微型电路板上同时集成传感元件和信号处理电路，并且输出的数字信号是完全标定。产品的可靠性和稳定性很强。传感器包括一个电容性聚合体测湿敏感元件、一个用能隙材料制成的测温元件，并在同一芯片上无缝连接了14位的A/D转换器以及串行接口电路。因此，该产品具有品质卓越、响应迅速、抗干扰能力强、性价比高等优点。 AT89C51单片机是最常用的51单片机，并且在日常生活中也有很多的使用，在学习中的电子制作方面，在工业上的机电控制方面都能见到其身影，用AT89C51单片机作为温湿度传感器的控制部分也是十分的方便实用。使用AT89C51单片机的优点在于性价比高，易于掌握和学习，并且能实现温湿度的测量与控制。 使用AT89C51单片机设计温湿度控制系统，可以准确及时的反应出室内的温湿度，还可以反映出温湿度的变化，并能以直观的数值形式反应在液晶显示屏上。本系统可以用来对温度和湿度进行监控。 【关键词】 ABSTRACT SHT11 is a SMD package digital temperature and humidity sensors. Can be simultaneously integrated in a micro- sensor circuit board and the signal processing circuit, and outputs the digital signal is complete standard. Product has a strong reliability and stability. Sensor includes a capacitive polymer humidity measuring sensor, a temperature measurement used by devices band gap material, and seamless connectivity on the same chip 14 -bit A / D converter and a serial interface circuit. Therefore, the product has excellent quality, fast response, anti-interference ability and highly cost-effective. AT89C51 microcontroller is the most common 51 microcontroller, and used in everyday life, there are many uses in electronics manufacturing in learning, in industrial electromechanical control could be seen, use AT89C51 microcontroller for the control temperature and humidity sensor the control section is also very convenient and practical. The advantage of using AT89C51 microcontroller is highly cost-effective, easy to grasp and learn, and be able to achieve measurement and control of temperature and humidity. Using AT89C51 microcontroller design temperature and humidity control system, can accurate and timely responses indoor temperature and humidity, and also can reflect changes in temperature and humidity, are able to react intuitively numerical form on the LCD screen. The system can be used to monitor temperature and humidity. 【Key words】AT89C51 SHT11 Temperature and humidity sensor Highly cost-effective  目 录 前 言 1 第一章 总体设计概述 3 第一节