本文選題：機械振動 + 動平衡��； 參考：《沈陽理工大學》2017年碩士論文

【摘要】：本課題為基于物聯(lián)網(wǎng)技術的旋轉機械遠程振動監(jiān)測與故障診斷系統(tǒng),針對機械設備由不平衡等因素引起的振動狀況通常沒有遠程監(jiān)測的現(xiàn)象,設計了一種利用物聯(lián)網(wǎng)技術搭建的遠程振動監(jiān)測與故障診斷系統(tǒng)。以剛性轉子旋轉機械作為研究對象,進行了以“下位機-服務器-客戶端”結構為核心的軟件和硬件系統(tǒng)設計,應用物聯(lián)網(wǎng)技術實現(xiàn)用戶同時對多臺旋轉機械設備的振動狀況進行遠程監(jiān)測和分析診斷的功能。文中詳細介紹了剛性轉子平衡的理論基礎、不平衡量計算流程和如何使用軟件硬件實現(xiàn)基于物聯(lián)網(wǎng)技術的系統(tǒng)遠程監(jiān)測與故障診斷功能。遠程振動監(jiān)測與故障診斷系統(tǒng)由下位機、服務器和客戶端三部分組成,使用TCP/IP協(xié)議進行遠程通信,網(wǎng)絡數(shù)據(jù)使用JSON數(shù)據(jù)交換格式進行封裝。下位機以STM32F407ZGT6微控制器為核心,使用8通道16位AD轉換模塊AD7606完成高精度的信號采集,使用GPRS通信模塊SIM900A完成網(wǎng)絡通信。主要用于被監(jiān)測設備的振動信號采集、不平衡量計算和不依賴監(jiān)測設備現(xiàn)場網(wǎng)絡環(huán)境的網(wǎng)絡數(shù)據(jù)傳輸。硬件設計主要包括處理器、功能芯片、傳感器選擇,濾波電路、自適應采樣頻率信號采集電路、測溫電路設計。軟件設計主要包括主程序、信號采集子程序、定標子程序、不平衡量計算子程序和GPRS網(wǎng)絡通信子程序的設計。服務器使用CentOS操作系統(tǒng)和MySQL數(shù)據(jù)庫,用于處理下位機、客戶端發(fā)送的網(wǎng)絡數(shù)據(jù)和管理數(shù)據(jù)庫。主要進行了數(shù)據(jù)庫設計、下位機數(shù)據(jù)處理模塊設計和客戶端數(shù)據(jù)處理模塊設計�？蛻舳耸褂肣t5進行設計,用于實現(xiàn)多被監(jiān)測設備運行狀態(tài)的在線監(jiān)測、歷史查詢和頻譜分析,完成人機交互。主要進行了網(wǎng)絡通信模塊設計、登錄界面設計、主界面設計、監(jiān)測窗口設計和分析診斷界面設計。本文最后通過多個實驗對整套系統(tǒng)功能和穩(wěn)定性進行了分析驗證,最終達到了預期目標。本課題設計的旋轉機械遠程振動監(jiān)測與故障診斷系統(tǒng)成本低、性能強、操作簡單、穩(wěn)定性高,對及時發(fā)現(xiàn)和排除設備故障具有非常重要的意義。
[Abstract]:This subject is a remote vibration monitoring and fault diagnosis system for rotating machinery based on the technology of Internet of things. A remote vibration monitoring and fault diagnosis system based on Internet of things is designed. Taking the rigid rotor rotating machine as the research object, the software and hardware system design with the structure of "lower machine, server and client" as the core is carried out. The technology of internet of things is used to realize the function of remote monitoring and analyzing and diagnosing the vibration condition of many rotating machinery and equipments simultaneously. In this paper, the theoretical basis of rigid rotor balancing, the calculation flow of unbalance and how to use software and hardware to realize the remote monitoring and fault diagnosis of the system based on the Internet of things technology are introduced in detail. The remote vibration monitoring and fault diagnosis system is composed of three parts: the lower computer, the server and the client. The remote communication is carried out by using TCP/IP protocol, and the network data is encapsulated by JSON data exchange format. The lower computer takes STM32F407ZGT6 microcontroller as the core, uses 8-channel 16-bit AD conversion module AD7606 to complete high-precision signal acquisition, and uses GPRS communication module SIM900A to complete network communication. It is mainly used for vibration signal collection of monitored equipment, calculation of unbalance and network data transmission which does not depend on the monitoring equipment field network environment. Hardware design mainly includes processor, function chip, sensor selection, filter circuit, adaptive sampling frequency signal acquisition circuit, temperature measurement circuit design. The software design mainly includes the main program, the signal acquisition subroutine, the calibration subroutine, the unbalanced calculation subroutine and the GPRS network communication subprogram design. The server uses CentOS operating system and MySQL database to process network data sent by client and manage database. Database design, data processing module design and client data processing module design. The client is designed with Qt5, which is used to realize the on-line monitoring, history query and spectrum analysis of the multi-monitored equipment, and to complete the man-machine interaction. Network communication module design, login interface design, main interface design, monitoring window design and analysis and diagnosis interface design. Finally, the function and stability of the whole system are analyzed and verified by several experiments, and the expected goal is finally achieved. The remote vibration monitoring and fault diagnosis system for rotating machinery designed in this paper has the advantages of low cost, strong performance, simple operation and high stability. It is of great significance for the timely detection and troubleshooting of equipment faults.
【學位授予單位】：沈陽理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TP277;TH113.1

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