基于ZigBee的轴承寿命测试数据采集和分析系统

发布时间：2018-04-17 03:04

本文选题：滚动轴承 + ZigBee　；参考：《浙江理工大学》2011年硕士论文

【摘要】：作为旋转机械中应用最为广泛的零部件之一,轴承的运行状态直接影响着整个系统的稳定性。生产厂家对轴承的质量检测都比较重视,除了常规的生产过程质量检测外,有条件的地方还需要对轴承进行全设计寿命的运行试验,本论文针对的就是这类试验系统。与对滚动轴承运行状态进行现场监控报警的系统不同,本论文涉及到的滚动轴承疲劳寿命测试系统,主要完成对滚动轴承从无损状态一直运转到损坏的整个试验过程中振动和温度的数据采集、传输,对数据进行分析,并提供在整个实验周期内所有采集点数据的数据、图形与声音的再现能力。本论文中数据从试验台到监控主机的传输采用Zigbee无线通讯方案实现。借用了其组网和网络自愈机制,并在此基础上完成数据校验重传、对象字典定义等软件机制,简化布线、新测试节点动态加入等工程应用问题,增强了系统的灵活性。为每个试验台搭配了一块基于ARM9的嵌入式终端来完成数据的收集、监测、波形显示和传输控制,终端LCD会实时更新显示采集到的振动和温度数据,当发现数据异常时,终端将输出控制指令直接停止试验,从而避免在长期的寿命周期实验中人工安排的难题;终端将各自测试轴承的振动和温度数据上传到监控主机,上位机程序对接收到的数据进行波形显示、FFT变换、存储,并根据数据异常情况自动或手动下传控制命令到终端来控制试验进程。在初步试验中,本系统运行稳定,在ZigBee协议栈及上层重传机制的保障下,系统无线网络能持续稳定完成数据传输任务,保证了采集终端与主控机的交互通讯。上位机程序提供了必要的交互界面,方便查看数据内容以及对终端下传控制指令。上位机程序能对被测轴承的整个寿命周期不同阶段的数据实现分析和存储以及振动声音回放,为人工分析被测轴承的失效过程,以及可能的更深层次理论研究提供数据支持。
[Abstract]:As one of the most widely used parts in rotating machinery, the running state of bearings directly affects the stability of the whole system.The manufacturers pay more attention to the quality testing of bearings. Besides the conventional quality testing in the production process, there is also a need for the operation test of the full design life of the bearings in the conditional places. This paper aims at this kind of test system.Different from the field monitoring and alarm system for rolling bearing running state, this paper relates to the rolling bearing fatigue life test system.It mainly completes the data acquisition, transmission and analysis of the vibration and temperature of the rolling bearing during the whole test process from the lossless state to the damaged state, and provides the data of all the points collected during the whole experiment cycle.The ability to reproduce graphics and sounds.In this paper, the transmission of data from test bench to monitor host is realized by Zigbee wireless communication scheme.Based on the network and self-healing mechanism, software mechanisms such as data verification and retransmission, object dictionary definition, simple routing, dynamic addition of new test nodes, and other software mechanisms are used to enhance the flexibility of the system.An embedded terminal based on ARM9 is used for each test bed to complete data collection, monitoring, waveform display and transmission control. The terminal LCD will update and display the collected vibration and temperature data in real time.The terminal stops the test directly with the output control instruction, thus avoiding the problem of manual arrangement in the long life cycle experiment; the terminal uploads the vibration and temperature data of each test bearing to the monitor host.The upper computer program transforms and stores the received data by waveform display FFT, and automatically or manually transmits the control command to the terminal according to the abnormal situation of the data to control the test process.In the preliminary experiment, the system runs stably. Under the guarantee of the ZigBee protocol stack and the upper layer retransmission mechanism, the wireless network of the system can continuously and stably complete the task of data transmission, and ensure the interactive communication between the acquisition terminal and the master computer.PC program provides the necessary interactive interface, easy to view the data content and control instructions to the terminal down.The upper computer program can analyze and store the data in different stages of the whole life cycle of the tested bearing and playback the vibration and sound to provide data support for the manual analysis of the failure process of the tested bearing and the possible deeper theoretical research.
【学位授予单位】：浙江理工大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH133.3;TP274.2

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