基于虚拟仪器的输送带撕裂诊断系统的研究

发布时间：2018-10-30 11:46

【摘要】：皮带输送机是煤炭、矿石、砂石、水泥等散料装卸与短距离运输的重要装备,广泛应用于矿山、能源、冶金等行业。近年来,随着经济的发展,皮带输送机的种类和数量不断增加,因而,其整机与关键部件维护和故障诊断已成为相关行业专业需求。输送带是皮带输送机主要组件,是皮带传输送机主要故障源,其故障诊断的研究已成为港、矿机械可靠性研究的一个热点。本文在详细分析了输送带撕裂的成因基础上,设计了一套基于虚拟仪器的非接触式输送带撕裂诊断系统。主要工作有: 深入研究了跑偏、卡压对输送带撕裂的影响,设计了模块化光电跑偏监测系统和压电传感的动态压力监测系统,以获得跑偏和卡压实时数据,结合以89C51单片机为下位机的设计,通过节点数据融合,判断撕裂的可能性。采用结构化插件设计,实现多点长距离测量。考虑到现场的工况环境,数据通信采用RS-232串行通信标准完成计算机和单片机之间的数据通讯。为了提高系统抗干扰能力,采取了物理屏蔽、光电隔离、滤波等多种措施。结合终端的设计,在LabVIEW平台上开发了一套输送带撕裂诊断软件系统,实现了数据采集、信号分析与处理、输送带状态显示、数据存储、故障报警等功能。通过实验验证,输送带撕裂诊断系统能够对输送带的运行状态进行实时监测、诊断和预警。所设计的系统突破了传统测试系统只能针对某一种撕裂原因进行检测的局限性,并与虚拟仪器相结合,可靠性高,运行稳定,为进一步开发输送带撕裂保护装置提供了参考。
[Abstract]:Belt conveyer is an important equipment for loading, unloading and short distance transportation of coal, ore, sand, cement and so on. It is widely used in mining, energy, metallurgy and other industries. In recent years, with the development of economy, the types and quantity of belt conveyors have been increasing. Therefore, the maintenance and fault diagnosis of the whole machine and the key parts have become the professional needs of the related industries. Conveyor belt is the main component of belt conveyor and the main fault source of belt conveyor. The research on fault diagnosis of belt conveyor has become a hot spot in the research of reliability of mine machinery. Based on the detailed analysis of the causes of belt tear, a non-contact belt tear diagnosis system based on virtual instrument is designed in this paper. The main works are as follows: the influence of running deviation and compression on the tear of conveyor belt is deeply studied, and the modularized photoelectric deviation monitoring system and the dynamic pressure monitoring system based on piezoelectric sensor are designed to obtain the real time data of running deviation and pressing. Combined with the design of 89C51 microcontroller, the possibility of tearing is judged by data fusion of nodes. The multi-point long-distance measurement is realized by using structured plug-in. Considering the working environment of the field, the data communication adopts RS-232 serial communication standard to complete the data communication between the computer and the single chip computer. In order to improve the anti-interference ability of the system, many measures such as physical shielding, photoelectric isolation, filtering and so on have been adopted. Combined with the design of the terminal, a belt tear diagnosis software system is developed on the LabVIEW platform, which realizes the functions of data acquisition, signal analysis and processing, conveyor belt status display, data storage, fault alarm and so on. The experimental results show that the belt tear diagnosis system can monitor, diagnose and warn the running state of conveyor belt in real time. The designed system breaks through the limitation that the traditional testing system can only detect one kind of tear reason, and combines with virtual instrument, it has high reliability and stable operation, which provides a reference for further development of belt tear protection device.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH222;TH165.3

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