摘 要
虚拟仪器是现代计算机技术同仪器技术深层次结合的全新概念仪器，实质是利用计算机显示器的显示功能模拟传统仪器的控制面板，以多种形式表达输出测量结果，利用计算机强大的软件功能实现信号数据的运算、分析和处理，完成各种测试功能的一种计算机仪器系统。 本文介绍了利用LabView语言来实现上、下位机之间通信的方法，并从软、硬件两个方面阐述了设计思想。在简要介绍图形化虚拟仪器平台LabView的基础上,分析STC12C5A60S2单片机与LabView之间的串口通信模式,并结合该设计中设计的温度检测系统给出串口通信的软、硬件设计。 应用先进的虚拟仪器软件LabView，大大降低了串口通讯复杂程度，减小了软件设计的工作量，能够大大降低投资成本。在实际应用中有巨大的使用价值。
关键词：单片机，LabView，串口通信
Design of MCU Serial Communication
Based on LabView
ABSTRACT
Virtual instrument is the modern computer technology combined with the instrumentation of the new concept of deep-level instrument, in real terms is the use of analog computer monitors display control panel, traditional instruments, in various forms to express the output measurements, using computer software features to achieve a strong signal Operation data, analysis and processing, to complete a variety of testing capabilities of a computer instrument system.
This article describes the use of LabView to implement the language, the next method of communication between the crew and from the software and hardware are two aspects of the design. Based on simple introduction of LabView dummy instruments platform，analyses the mode of serial communication between STC12C5A60S2 MCU and LabView，and gives its software and hardware design with an example of a system of Temp-Watch．
The application of advanced virtual instrument software LabView, greatly reduces the complexity of serial communication, reduce the software design can greatly reduce the investment cost. In practice, there is tremendous value in use.
KEY WORDS：MCU, LabView, Serial Communication
前言1
第1章 绪论3
§1.1 研究的背景与意义3
§1.1.1 课题研究背景3
§1.1.2课题研究意义3
§1.2课题发展状况4
§1.3设计任务5
第2章 系统总体设计6
§2.1 系统方案设计6
§2.2系统硬件选择6
第3章 系统硬件设计7
§3.1 元器件的介绍7
环氧树脂涂层
§3.1.1 主控制器（STC12C5A60S2）7
§3.1.2温度传感器介绍（DS18B20）10
§3.1.3PL2303HX简介13
§3.2硬件电路图设计13
§3.2.1主板电路13
§3.2.2温度检测电路14
二硝基甲苯
键盘防尘罩
§3.2.3键盘电路15
§3.2.4LED灯控制电路15
§3.2.5串口通信电路16
§4.2LabView串口设置与 HMI设计18
微小件精密加工§4.2.1 VISA简介18
§4.2.2串口通讯函数18
§4.2.3HMI设计19
§4.3上位机PC机LabView串口通信实现19
§4.4单片机串口通讯协议22
结 论23
参考文献24
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附 录26
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