液压阀高精度振动信号采集分析系统设计  

Design of high precision vibration signal acquisition and analysis system for hydraulic valve

作　　者：梅二召 魏新华 范景峰 李俊杰 范帅 MEI Erzhao;WEI Xinhua;FAN Jingfeng;LI Junjie;FAN Shuai(School of Mechanical and Electrical Engineering,Henan Technical Institute,Henan Zhengzhou 450042,China)

机构地区：[1]河南应用技术职业学院机电工程学院,河南郑州450042

出　　处：《工业仪表与自动化装置》2024年第5期17-23,共7页Industrial Instrumentation & Automation

基　　金：河南省高等学校重点科研项目计划支持(22A413006,23B460018,23A460031);河南省科技攻关项目(212102210623,232102320086,232102241022,232102110297);河南应用技术职业学院校级科研项目(2022-KJ-45);河南应用技术职业学院青年骨干教师资助项目(2022-GGJS-J003);河南应用技术职业学院首席技师资助项目(2023-SXJS-JDOI)。

摘　　要：针对液压阀工况环境复杂、振动数据采集不精确、采集系统线路布设困难等问题,以ARM微处理为核心设计用于液压阀高精度振动采集系统,对大型液压设备进行数据采集与分析。首先,针对大型液压设备的工作环境,分析液压阀振动采集系统的总体设计方案,接着以液压阀的振动信号特征选择多轴加速度传感器,用于振动信号的采集,并根据采集系统在布设过程中的困境,选用无线传输模式进行下位机和上位机的数据传输;其次,为方便在采集现场进行快速数据分析,在上位机软件中设计基于功率谱和高阶谱的振动信号分析系统;最后,以先导式液压阀为例,完成液压阀高精度振动信号的采集与实时分析。测试结果表明,设计的振动信号采集系统能够完成复杂工况下振动信号的采集与现场分析,具有较好的工程应用价值。To address problems such as complex working environment of hydraulic valve,imprecise vibration data acquisition and difficult line layout of the acquisition system,ARM micro processing is used to design a high-precision vibration acquisition system for hydraulic valve for data acquisition and analysis of large hydraulic equipment.Firstly,the overall design scheme of the hydraulic valve vibration acquisition system is analyzed according to the working environment of large hydraulic equipment,and then the multi-axis acceleration sensor is selected for vibration signal acquisition according to the vibration signal characteristics of the hydraulic valve,and the wireless transmission mode is selected for data transmission between the lower computer and the upper computer according to the difficulties in the acquisition system layout.Secondly,the vibration signal analysis system based on power spectrum and high order spectrum is designed in the upper computer software in order to facilitate the rapid data analysis at the acquisition site.Finally,taking the pilot hydraulic valve as an example,the high-precision vibration signal of the hydraulic valve is collected and analyzed in real time.The test results show that the designed vibration signal acquisition system can complete the acquisition and field analysis of vibration signals under complex working conditions,and has good engineering application value.

关 键 词：液压阀 振动信号 振动传感器 微处理器 无线传输 高阶谱分析 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]