一种手持振动信号采集分析仪的设计与实现

摘要

为满足工业现场设备状态信息化采集和数据快速分析的需求,开发了一种手持振动信号采集分析设备,系统采用便携式嵌入式系统构架,利用加速度传感器获取振动信号,通过两级改进的积分器模拟电路得到速度和位移信号,经过滤波整形处理后送ARM处理器存储并处理,系统配备USB和无线Zigbee两种与上位机和其他分析仪之间进行通信,设计了大容量Flash存储器、48位信息钮识别器、节能电源设计和液晶显示功能。具有时域信号显示分析、频谱分析、共振解调和趋势分析等功能。实验表明,系统运行稳定可靠,数据分析结果准确、速度快、精度高,达到了预期目的。%To meet the requirement of information acquisition and data analysis for the state of industrial equipment,this paper develops a portable vibration test instrument.The system adopts portable embedded system architecture,uses the acceleration sensor to gain vibration signals and gains speed and displacement signals by the integrator analog circuit double improved.The MCU gathers and stores the information.This system has USB communication,Flash memorizer,48 bit authentication energy-saving power manager,LCD display and SD memory.The system has such functions as time-domain signal display and analysis,spectrum analysis,resonance vibration demodulation and trend analysis.Experimental results show that the system is stable and reliable,and data analysis is accurate and fast,meeting the expectation.