汽轮发电机组转轴振动监测系统设计  

Design of generator set rotor vibration monitoring system

作　　者：刘凤春[1] 冯帆[1] 赵长春[1] 

机构地区：[1]大连理工大学电气工程学院,辽宁大连116000

出　　处：《微型机与应用》2014年第15期16-19,共4页Microcomputer & Its Applications

摘　　要：设计了一种发电机组转轴振动监测系统。电涡流变送器将振动信号转换为电信号并传送至系统硬件平台。硬件平台使用FPGA作为控制核心对电信号进行模数转换、FIR滤波及温度矫正,并通过USB 2.0接口传输至上位机。硬件平台提供USB 2.0和RS-232两种接口,分别用来传输数据和控制命令。上位机采用LabVIEW开发平台,通用性强,通过VISA组件与硬件平台USB 2.0接口和RS-232接口通信,获取数据并控制硬件平台,实现实时振动波形分析、频域分析和轴心轨迹分析。系统可以进行远程控制与发布,并能将数据存储进SD卡及数据库中。测试及分析结果显示,整个系统运行良好、稳定、实时性强。This paper proposes a system which is used to monitor generator set vibration. Hardware platform utilizes FPGA as control core, receives the electrical signal converted by the sensor, conducts A/D converting, proceeds FIR filtering, adjusts temperature drift. Hardware platform provides two kinds of interface, including USB 2.0 and RS-232, to transfer data and control orders to upper computer. Upper computer utilizes LabVIEW platform, which can use VISA module to connect to the USB 2.0 and RS-232 interface. LabVIEW acquires data and controls the hardware platform, realizes real-time waveform analysis, frequency domain analysis and shaft orbits analysis. The system can realize remote control and data storage both with SD card and local database. Through the detecting and analyzing, the whole system runs well and stably.

关 键 词：发电机组 振动测试 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]