文档介绍：基于51单片机的数字温湿度计设计及实现
摘要:温度和湿度是两个最基本的环境参数,人们生活与温湿度息息相关。在日常生活、工业、医学、环境保护、化工、石油等领域,经常需要对环境温度和湿度进行测量和控制。准确测量温湿度在生物制药、食品加工、造纸等行业更是至关重要。因此研究温湿度的测量方法和装置具有重要的意义。
随着科技的不断发展,单片机技术已经普及到我们生活、工作、科研等各个领域,已经成为一种比较成熟的技术。由于单片机集成度高、功能强、可靠性高、体积小、功耗低、使用方便、价格低廉等一系列有点,目前已经渗入到人们工作和生活的方方面面。本论文介绍了一种以单片机AT89C51为主要控制器件,以DHT11为数字温湿度传感器的新型数字温湿度计。本设计主要包括硬件电路的设计和系统软件的设计、硬件电路主要包括主控制器,测量温湿度控制电路和显示电路等。
关键词:温湿度传感器;LCD1602;protel;keil 软件
Digital Thermometer and humidity Based on
Single Chip puter
Abstract : Temperature and humidity are the two most basic environmental parameters, which are closely related to people's lives and the temperature and humidity. Temperature and humidity measurement and control are often needed to ambient in the field of daily life, industry, medicine, environmental protection, chemical, petroleum, etc.,. Accurate measurement of temperature and humidity in the pharmaceutical, food processing, paper industry is essential. Therefore, studying the temperature and humidity measurement methods and devices is of great significance.
   This paper describes a microcontroller AT89S52 control devices, digital temperature and humidity sensors to DHT11 new digital hygrometer. The design includes the design of hardware circuits and system software design, hardware circuit includes a master controller, the measurement of temperature and humidity control circuit and display circuit. DHT11 is posite Sensor contains a calibrated digital signal output of the temperature and humidity. Application of a dedicated digital modules collection technology and the temperature and humidity sensing technology, to ensure that the product has a Song high reliability and excellent long-term stability. Display circuit LCD1602 LCD display, 8-bit microprocessor interface, mapped by the internal 80 × 8-bit DDRAM 2 line x 16 character display, convenient and intuitive. The software part includes the main program, the measured temperature and humidity subroutine to display subroutine. The digital hygromet