辽东学院本科毕业论文（设计）
The Design of Temperature Measurement System Based on Virtual Instrument Technology
学 院（系）： 机电学院
专 业： 测控技术与仪器
学 生 姓 名： 梁宇
学 号：0614110415
指 导 教 师： 娜
评 阅 教 师：
完 成 日 期：2015年4月
辽 东 学 院
Eastern Liaoning University
摘 要
测控技术跟随时代的发展，正在变得更加数字化，自动化，智能化和网络化。随着“软件就是仪器”这个概念被美国NI公司率先提出，LabVIEW也随之产生。
如今社会的工业中不能缺少检测，尤其是在恶劣环境下更加需要远程检测系统。
本设计分为两部分，上位机部分由PC机的LabVIEW软件对检测界面进行开发，可以对温度变化曲线进行直观的观察，还可以在需要的情况下把检测数据保存在Excel中，利用记录的温度数据对比设定值来提示温度报警；下位机部分由89E52单片机读取温度数据，利用RS-232转到USB接口，由上位机分析处理。本设计对不适于人进入的场所的测量工作问题进行了有效的解决。
在V3.0版本之后LabVIEW通信模块（NI-VISA）开始支持USB串口，这使下位机可以不用接收数据采集卡的数据就可以和LabVIEW进行通信，不仅减低了硬件的成本，也使LabVIEW在实用性和灵活性上得到加强。
关键词：LabVIEW；温度；接口技术
The Design of Temperature Measurement System Based on Virtual Instrument Technology
Abstract
With the continuous development of measurement and control technology, and its technology is toward automation, intelligent, digital and network development. The company put forward the NI "software is instrument" concept, so LabVIEW arises at the historic moment.
Detection in today's society in many of the industry with or lack of, some environmental bad place is also can not get away from remote detection system.
This design is solved some heavy industry, pharmaceutical industry, etc in between some of place is not fit for human in, still need to temperature detection problem. This design has two sides, the PC is in the PC platform using the LabVIEW software development testing interface, and intuitive observe temperature curve, according to need to also can be in the form of form to Excel, save detection of historical data, according to the real-time data acquisition data and the temperature of the set value comparison, tip temperature alarm; The machine is through a single chip computer 89 E52 read temperature data, through the RS-232 turn USB interface, move as a machine for analysis.
This design is used to RS232 serial line USB for PC and a machine under the communication. The communication module LabVIEW NI-VISA in V3.0 version began after support USB serial ports, make the next place machine and can not through LabVIE
W communication data acquisition card takes a machine under the monitoring data, make the flexibility and practical better LabVIEW, save the hardware part of the cost.
Key words: LabVIEW; temperature; Interface technology
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