摘要当今社会的发展离不开单片机和传感器技术，这两者已经在我们生活和工作的各方面都有广泛的应用。传统的温度传感器以热敏电阻为温度检测方法，可靠性差，温度误差大。新型的温度传感器DS18B20以单总线的特有连接方式，大大简化了复杂电路，具有温度检测可靠性高、准确率高的优点。为了便于智能化控制，本文采用单片机STC89C52对DS18B20传感器进行控制。本设计在温度检测的基础上实现了温度数据的远距离无线传输，应用的是nRF905无线通信芯片，实现了对温度数据进行检测和无线传输控制。34568
本设计给出了系统硬件原理图、软件流程图和具体实物。系统实物制作精细，布局清晰，结构紧密，线路简洁，体积适中，能在正常情况下进行温度检测和无线传输，拥有广阔的应用前景，尤其在工厂、智能化企业、温室大棚等领域应用广泛。本设计扩展灵活，检测误差小，打破了传统仪器整体难以扩展文护的局限性，使用起来很方便，在工业温控场合有很大的用处。
毕业论文关键词： DS18B20   nRF905无线通信芯片   单片机
Abstract  Today's society can not develop without MCU and sensor technology, both of which have been in all aspects of our lives and work have wide applications. Conventional temperature sensor to thermistor temperature detection method, poor reliability, temperature error is large. The new temperature sensor DS18B20 single bus connection to the unique, greatly simplifies the complexity of the circuit, with a temperature detecting high reliability, high accuracy advantages. In order to facilitate intelligent control, we use microcontroller STC89C52 on DS18B20 sensor control. The design on the basis of the detected temperature to achieve a long-distance wireless transmission of temperature data, the application is nRF905 wireless communications chips, to achieve the temperature data detection and wireless transmission control.
  This design gives the system hardware schematics, software flowcharts and specific kind. System of physical production of fine, clear layout, compact, simple lines, moderate size, can detect the temperature and wireless transmission under normal circumstances, have broad application prospects, particularly widely used in factories, Intelligent Enterprise, greenhouse and other fields. The design expansion flexibility, small detection error, breaking the traditional instrument is difficult to expand the overall maintenance of limitations, easy to use, in the case of the industrial temperature control is very useful.
Keywords:
DS18B20  nRF905-wireless-communications-chips  Microcontroller
 目录
摘  要    I
Abstract    II
1 绪论    1
1.1研究背景与意义    1
1.2 研究目的及应用    1
1.3 设计内容及要求    2
2 系统方案论证与选择    3
2.1单片机的基本理论    3
2.2无线网络基本理论    3
2.3温度检测基本理论    3
2.4 系统总体方案    4
3 系统硬件电路设计    5
3.1硬件整体设计概述及功能分析    5
3.2系统主要技术参数    5
3.3系统的硬件模块的选择    5
   3.3.1系统主控制器的选择    5
   3.3.2射频模块的选择    6
   3.3.3温度传感器的选择    7
3.4单片机最小系统设计    8
3.5温度显示模块设计    10
3.6信号采集模块设计    11
3.7无线收发模块设计    13
3.8复位电路    15 STC89C52单片机温度检测与无线传输系统设计+电路图+源程序:http://www.751com.cn/zidonghua/lunwen_32104.html