粮仓温湿度检测系统
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xxxx职业技术学院
（2012届）
专科毕业设计（论文）
粮仓温湿度检测系统
学 院（部）：
专 业：
应用电子技术
学 生 姓 名：
xxxx
班 级：
电子0902
学号xxxx
指导教师姓名：
xxxx
职Hale Waihona Puke Baidu讲师
最终评定成绩
2012 年 5 月
摘要
此粮仓温度系统是由从机、主机构成，从机是由DHT11温湿度传感器、液晶显示屏1602、无线发送模块NRF24L01构成；主机是由NRF24L01接受模块、液晶显示屏1602构成。
从机对温度、湿度分别进行测量，并通过液晶显示屏1602进行显示。然后经无线传输模块传给主机。再在主机液晶显示屏上显示。DHT11数字温湿度传感器是一款含有已校准数字信号输出的温湿度复合传感器。它应用专用的数字模块采集技术和温湿度传感技术，确保产品具有极高的可靠性与卓越的长期稳定性。传感器包括一个电阻式感湿元件和一个NTC测温元件，并与一个高性能8位单片机相连接。因此该产品具有品质卓越、超快响应、抗干扰能力强、性价比极高等优点。每个DHT11传感器都在极为精确的湿度校验室中进行校准。校准系数以程序的形式储存在OTP内存中，传感器内部在检测信号的处理过程中要调用这些校准系数。单线制串行接口，使系统集成变得简易快捷。超小的体积、极低的功耗，信号传输距离可达20米以上，使其成为各类应用甚至最为苛刻的应用场合的最佳选则。产品为4针单排引脚封装。连接方便，特殊封装形式可根据用户需求而提供。采用NRF24L01无线模块传送数据，稳定性高。系统具有不需的连接线，安放范围可以扩大，可读性高，反应速度快，测量值准确的特点。
关键词：AT89S52，DHT11, NRF24L01
Abstract
The barn temperature system is made from a machine, host, from the machine is the DHT11 temperature and humidity sensor, LCD display screen 1602, wireless transmission module NRF24L01 form; Host is by NRF24L01 accept module, LCD display screen 1602 form.
From machine to temperature, humidity measurement respectively, and through the liquid crystal display that is 1602. Then by wireless transmission module to the host. Again in the host the LCD screen display. DHT11 digital temperature and humidity sensor is a digital signal output containing already calibration the temperature and humidity of the composite sensor. It used the digital module for acquisition technology and temperature and humidity sensor technology to ensure that products with high reliability and excellent long-term stability. Sensors including a resistive are wet components and a NTC (temperature sensor, and with a high performance eight single chip connected. So the product has excellent quality, super fast response, anti-jamming ability, extremely cost-effective higher advantages. Each DHT11 sensors in the extremely precisely humidity calibration chamber to the equipment. In the form of calibration coefficient program stored in memory of a OTP, sensor detection signal processing in internal process we call these calibration coefficient. Wired system serial interface, make the system integration become simple and quick. Super small volume, low power consumption, signal transmission distance is 20 meters above, make it become the most demanding of of all kinds of application and even the best selected applications. The product is 4 single needle pins encapsulation. Joins convenient, special packaging form according to customers' demand and supply. The NRF24L01 wireless data transmission module, high stability. System has not required for the links, put range can expand, readable, reaction speed, the characteristics of the accurate measurements.
（2012届）
专科毕业设计（论文）
粮仓温湿度检测系统
学 院（部）：
专 业：
应用电子技术
学 生 姓 名：
xxxx
班 级：
电子0902
学号xxxx
指导教师姓名：
xxxx
职Hale Waihona Puke Baidu讲师
最终评定成绩
2012 年 5 月
摘要
此粮仓温度系统是由从机、主机构成，从机是由DHT11温湿度传感器、液晶显示屏1602、无线发送模块NRF24L01构成；主机是由NRF24L01接受模块、液晶显示屏1602构成。
从机对温度、湿度分别进行测量，并通过液晶显示屏1602进行显示。然后经无线传输模块传给主机。再在主机液晶显示屏上显示。DHT11数字温湿度传感器是一款含有已校准数字信号输出的温湿度复合传感器。它应用专用的数字模块采集技术和温湿度传感技术，确保产品具有极高的可靠性与卓越的长期稳定性。传感器包括一个电阻式感湿元件和一个NTC测温元件，并与一个高性能8位单片机相连接。因此该产品具有品质卓越、超快响应、抗干扰能力强、性价比极高等优点。每个DHT11传感器都在极为精确的湿度校验室中进行校准。校准系数以程序的形式储存在OTP内存中，传感器内部在检测信号的处理过程中要调用这些校准系数。单线制串行接口，使系统集成变得简易快捷。超小的体积、极低的功耗，信号传输距离可达20米以上，使其成为各类应用甚至最为苛刻的应用场合的最佳选则。产品为4针单排引脚封装。连接方便，特殊封装形式可根据用户需求而提供。采用NRF24L01无线模块传送数据，稳定性高。系统具有不需的连接线，安放范围可以扩大，可读性高，反应速度快，测量值准确的特点。
关键词：AT89S52，DHT11, NRF24L01
Abstract
The barn temperature system is made from a machine, host, from the machine is the DHT11 temperature and humidity sensor, LCD display screen 1602, wireless transmission module NRF24L01 form; Host is by NRF24L01 accept module, LCD display screen 1602 form.
From machine to temperature, humidity measurement respectively, and through the liquid crystal display that is 1602. Then by wireless transmission module to the host. Again in the host the LCD screen display. DHT11 digital temperature and humidity sensor is a digital signal output containing already calibration the temperature and humidity of the composite sensor. It used the digital module for acquisition technology and temperature and humidity sensor technology to ensure that products with high reliability and excellent long-term stability. Sensors including a resistive are wet components and a NTC (temperature sensor, and with a high performance eight single chip connected. So the product has excellent quality, super fast response, anti-jamming ability, extremely cost-effective higher advantages. Each DHT11 sensors in the extremely precisely humidity calibration chamber to the equipment. In the form of calibration coefficient program stored in memory of a OTP, sensor detection signal processing in internal process we call these calibration coefficient. Wired system serial interface, make the system integration become simple and quick. Super small volume, low power consumption, signal transmission distance is 20 meters above, make it become the most demanding of of all kinds of application and even the best selected applications. The product is 4 single needle pins encapsulation. Joins convenient, special packaging form according to customers' demand and supply. The NRF24L01 wireless data transmission module, high stability. System has not required for the links, put range can expand, readable, reaction speed, the characteristics of the accurate measurements.