基于labview的温度检测系统(杨凤鸣)01.doc

沈阳理工大学应用技术学院 毕业设计（论文） 题 目： 基于LabVIEW的温度检测系统 系 别： 信息与控制学院 专 业： 测控技术与仪器 学生姓名： 杨 凤 鸣 指导教师： 耿 欣 年 月 日 摘 要 随着测控技术的不断发展，测控技术正向着自动化，智能化，数字化和网络化的方向发展。美国NI公司的提出了“软件就是仪器”的概念，于是LabVIEW应运而生。 检测在当今社会的许多工业中不和或缺，有些环境恶劣的地方更是离不开远程的检测系统。 本设计就解决了有些重工业、制药业等行业中的有些场所间内不适合人进入时，还需要进行温度检测的问题。本设计有两个方面，上位机是在PC平台上运用LabVIEW软件开发检测界面，并且直观的观察温度变化曲线，根据需要还可以以Excel表格的形式，保存检测的历史数据，根据实时采集的温度数据和设定值比较，提示温度报警；下位机是通过单片机89E52读取温度数据，通过RS-232转USB接口，动如上位机中进行分析处理。 LabVIEW的通信模块NI-VISA在V3.0版本之后开始支持USB串口，使下位机与LabVIEW通信时可以不通过数据采集卡接收下位机的监测数据，使LabVIEW的灵活性和实用性更好，节约了硬件部分的成本。 关键词：LabVIEW；； 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 todays 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 LabVIEW communication data acquisi