自紧技术是世界各国采用较多的一种提高火炮身管承载能力及延长使用寿命的有效方法。测试自紧机的超高压对于火炮管的研究有着非常重要的意义。工业及民用生产的许多领域都涉及到超高压及其测量问题，测试超高压就要选择使用合适的超高压传感器。在生产过程中，应用数据采集系统可对生产现场的工艺参数进采集、监视和记录，为提高产品质量、降低成本提供信息和手段。在科学研究中，应用数据采集系统可获得大量的动态信息，是研究瞬间物理过程的有力工具，也是获取科学奥秘的重要手段之一。总之，不论在哪个应用领域中，数据采集与处理越及时工作效率就越高，取得的经济效益就越大。文章主要介绍了虚拟仪器开发平台—图形化编辑语言 LabVIEW.然后给出数据采集系统的硬件结构图。在对压力传感器进行标定后，设计基于数据采集卡USB-6251和 LabVIEW 的压力采集程序框图和设计的前面板，进行联机调试，实现数据的采集、存储与显示等功能。59500
毕业论文关键词 自紧机，超高压传感器，虚拟仪器，数据采集，数据标定
Title The design of the pressure data acquisition systemSoftware
Abstract Self-tightening technology is used to improve the carrying capacityand effective way to extend the life of the gun barrel. The test forself-tightening machine gun tube studies has a very importantsignificance. In many areas, Industrial and civilian production involvehigh pressure and its measurement problems. Testing high pressure isnecessary to choose a suitable high pressure sensor.In the production process, the application data acquisition system canprocess parameters on the production site into the collection, monitoringand recording, in order to improve product quality, reduce costs and meansof providing information. In scientific research, applied data acquisitionsystem will be a lot of dynamic information, is to examine the physicalprocesses of the moment a powerful tool, but also access to scientificmysteries of one of the important means. In short, no matter whatapplication areas, more timely data acquisition and processing efficiencyis higher, the greater the economic benefits achieved.This article mainly introduces the virtual instrument developmentplatform - graphical editing language LabVIEW. Then gives the dataacquisition system hardware structure. After the calibration of pressuresensor, the block diagram of data acquisition system is designed based ondata acquisition card USB-6251 and LabVIEW, then design the front panel.Realize the functions of data collection, storage and display
Keywords Self-tightening machine, High pressure sensor,Virtualinstruments, data acquisition, calibration data.

目次

1绪论...3

1．1超高压力测量..3

1．2课题背景..3

1.2.1自紧机高压测试背景.3

1.2.2数据采集系统研究背景.3

1．3本文主要内容..4

2超高压力测试系统概述...4

2．1自紧机概述4

2．2虚拟仪器概述..5

2.2.1虚拟仪器的概念...5

2.2.2虚拟仪器的优势5

2.2.3虚拟仪器测试系统的组成6

2.2.4虚拟仪器系统的软件构成6

2.2.5虚拟仪器I/O接口设备7

2.3数据采集理论8

2.3.1数据采集技术的概述...8

2.3.2信号调理...8

2.3.3输入信号类型...9

2.3.4输入信号的连接方式...9

2.3.5测量系统分类.10

2.3.6传感器和传感器的静态标定..10

3超高压力测试系统硬件设计.12

3．1硬件框图12

3．2传感器的选型13

3．3在线放大器的选型13

3．4数据采集卡的选择..15

3.4.1数据采集卡的性能指标..15

3.4.2数据采集卡的组成..16

3.4.3NIUSB-6251数据采集卡..16 高压数据采集系统软件设计:http://www.youerw.com/zidonghua/lunwen_64863.html