基于LabVIEW的直流電機轉速檢測系統設計

測控論文編號:CK105   論文字數:8497,頁數:50

目 錄
摘要.................................II
Abstract..III
1  緒論1
2  方案設計.....2
 2.1  系統原理框圖設計..2
 2.2  單元電路分析與設計.3
         2.2.1  轉速/頻率轉化電路的設計.3
         2.2.2  脈沖濾波整形電路的設計6
         2.2.3  電機驅動電路的設計..8
         2.2.4  串口電路的設計.9
         2.2.5  關于51單片機電路的設計..11
3  51單片機程序設計..........14
 3.1  主程序的設計...............14
 3.2  T0的程序設計.......16
    3.3  T1的程序設計.........17
 3.4  速度計算的程序設計..18
 3.5  程序燒錄..18
4  LabVIEW程序設計.....20
 4.1  LabVIEW簡介......................20
 4.1.1  主要特點..20
 4.1.2  未來評測.....21
 4.2  LabVIEW的VISA串口通信....22
 4.3  LabVIEW的前面板和程序框圖設計..23
 4.3.1  前面板的設計.....23
 4.3.2  程序框圖的設計....24
5  總結..............25
致謝..26
參考文獻...............27
附錄1  電氣原理圖..28
附錄2  實物圖片.29
附錄3  單片機程序.............30

摘  要

 LabVIEW（Laboratory Virtual instrument Engineering Workbench）是一種圖形化的編程語言的開發環境，它廣泛地被工業界、學術界和研究實驗室所接受，視為一個標準的數據采集和儀器控制軟件。此次設計就是要運用LabVIEW作為測量儀器，來完成現今在工業上占重要地位的電機測控中的電機測速。大多數LabVIEW測量系統都需要使用數據采集卡。但簡單的應用，可以用單片機來實現數據采集卡的功能。數據采集好后，通過串口發送給LabVIEW，然后由LabVIEW完成數據的顯示、存儲、分析等功能。
 此次設計運用光耦傳感器將電機葉片的轉速轉化為電壓型號，波形通過施密特觸發器和反相器整形，再通過51單片機進行采集運算，最后由LabVIEW顯示。只是簡單地運用，卻也包含這些當今的重要技術，亦可當作為日后鋪路，其意義不小。

關鍵詞： LabVIEW、單片機、電機測速

Abstract

 LabVIEW (Laboratory Virtual instrument Engineering Workbench) is a graphical programming language development environment, it is widely used by industry, academia and research laboratories, accepted as a standard data acquisition and instrument control software. The design is to use LabVIEW as a measuring instrument, to accomplish the measurement of electrical motor speed which is one of the impotant technology of industrial measurement and control of electrical motor. Most measurement systems require the use of LabVIEW data acquisition card. But the simple application that can be achieved with single-chip data acquisition functions. Data acquisition is completed, through the serial port to send to LabVIEW, and LabVIEW for data from the display, storage, analysis and other functions.
 The design leaves the use of opto-motor speed sensor into voltage model, the waveform through the Schmitt trigger and inverter plastic, and then were collected by 51 single-chip operation, and finally by the LabVIEW display. Simply use, but also includes these important technologies of today. It is also seem to be paving the way for future .Its meaning is important.

Keywords：LabVIEW、Single-chip、Motor speed measurement