菜单
  
    摘要:温度测量与控制系统在工农业、科研领域和在人们的生活中,被广泛应用。在列车自动控制领域中,列车车厢温度检测与控制占也有很重要地位。目前,温度传感器正由模拟式向数字集成式得方向飞速发展。22891
    本论文概述了温控器的发展以及基本原理,介绍了温度传感器的原理和特性。分析了DS18B20温度传感器的优势与缺点。在此基础上描述了系统研制的理论基础,温度采集等部分的电路设计,并对测温系统的各种主要参数进行了讨论。并在介绍温度控制系统功能的基础上,提出了系统的总体构成。针对温控系统的温度采集、接收、处理、播报、显示部分的总体设计方案进行了论证,进一步介绍了单片机在该系统中的应用,分析了系统各部分的硬件以及软件的实现,还利用单片机开发板验证在实际电路中能起到的效果。最终完成整套系统的焊接,这套温度检测控制器具控制按键少,有较好的可操作性,并还有很好的可拓展性。
    课题计划是在普通车厢环境下的测温,系统的设计及元器件的选择也正是基于车厢特点进行选择的。
    毕业论文关键词: DS18B20   单片机  车厢温度控制
    Design of Train Vehicle Wireless Transceiver
     Abstract: Temperature measurement and control system in the field of agriculture and industry, scientific research and in people's life, widely application. In the field of automatic control, train carriages temperature detection and control of also has a very important position. Therefore, the application of temperature sensor number among the top of the sensor. At present, the temperature sensor is composed of analog to digital integrated rapid development direction.
    This paper summarizes the development and basic principle of the thermostat, this paper introduces the principle of temperature sensor and features. Analyses the advantages and disadvantages of the DS18B20 temperature sensor. Developed on the basis of describing the system theory, the temperature collection and other parts of the circuit design, and all kinds of main parameters of temperature measuring system is discussed. And on the basis of the function of the temperature control system is introduced in this paper, put forward the general composing of the system. In view of the temperature control system of temperature acquisition, receiving, processing, reporting, demonstrates the display part of the overall design, further introduces the application of SCM in the system, analyzes the various parts of the system and the realization of the hardware and software, also in the actual circuit is validated with MCU development board plays an effect. The final welding system, a complete set of the temperature detection control appliance control buttons, less good maneuverability, and there is still a good scalable.
    Project plan is in ordinary car environment temperature measurement, the design of the system and the selection of components is based on the characteristics of cars to choose.
    Key Words:DS18B20   Microcontrollers,  Compa
    目 录
    1  绪论    2
    1.1 课题的目的和意义    2
    1.2 国内外研究现状与水平    2
    1.3 发展趋势    4
    1.4 列车车厢温控系统中存在的问题    5
    1.5 本文的主要工作与内容    5
    2  硬件设计    7
    2.1总体方案的确定    7
    2.3 硬件电路设计    8
    2.3.1  STC89系列单片机    8
    2.3.2  温度传感器DS18B20    9
    2.3.3  信号处理与控制电路    10
    2.3.4  数码管显示电路    11
    2.3.5 语音播报电路    12
    2.3.6  晶振控制电路    12
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