金平艳电子信息工程数据采集系统设计江伟老师.docVIP

毕业设计论文 基于单片机的数据采集系统设计 学生姓名：金平艳 学院名称：机械与电子工程学院 专业名称：电子与信息工程 指导老师：江伟老师 2013年5月28号 摘 要 单片机在各行各业得到了广泛的应用，因此它已深入到了检测、控制的领域。另外，它的实时控制能力也很强，除此之外，单片机易扩展，很容易也很简便构成各种智能系统。基于单片机的各种优势，它在高性能通信、复杂工业过程控制、机器人、局域网络、数字信号处理、大量的数据实时处理以及数据的采集等等方面扮演着越来越重要的作用。 本设计是基于STC89C51单片机，ADC0809,74LS164和模拟温度的电压传感器实现温度的测量系统，我们采用基于电阻式的电压传感器来采集模拟的电压量，通过ADC0809转换器的转换到AT89C51单片机中，单片机在对其进行实时的处理，处理好的数据再由串入并出的74LS164译码器来驱动数码管，最后通过延时时钟的控制正确有效的来显示出相应的所采集的数据。单片机的种类还是比较多，在这些种类中，8051系列的单片机以其卓越的品质，仍会是今后单片机发展的主流。 关键词:单片机； 数据采集； 报警系统； 电压显示 ABSTRACT Single chip has been widely used in all walks of life, so it has depth to the detection, control field. In addition, the ability of real time control of it is also very strong, in addition, single-chip easy expansion, easy also very simple form of intelligent system. The advantages of various based on single chip, which in high performance communication, complex industrial process control, robot, local area network, digital signal processing, a large amount of data real-time processing and data collection and so on are playing an increasingly important role. The design is based on STC89C51 MCU, realize the temperature measurement system of the voltage sensor ADC0809,74LS164 and simulated temperature, we use the amount of voltage sensor resistance based on the acquisition simulation, by switching ADC0809 converter to AT89C51 SCM, the single chip computer for real-time processing of the 74LS164 decoder, the handled data by serial input and parallel output to drive the digital tube, finally by controlling the delay clock correct and effective to show the corresponding data. Single species or more, these categories, 8051 series micro controller with its excellent quality, still is the mainstream MCU development in the future. Key word:AT89C51; Date collection; Alarm system; Temperature display  目 录 摘 要 I ABSTRACT II 绪 论 1 第二章 总体的设计方案 2 2.1 此系统功能 2 2.1.1 系统的设计步骤 2 2.1.2 系统的工作流程图 3 2.2 设计任务与要