基于无线传感网络的水泵振动状态监测系统设计

Design of pump vibration state monitoring system based on wireless sensor network

针对传统的振动状态监测系统布线复杂、信号干扰等问题,提出一种新型基于无线传感网络的水泵振动状态监测系统。选用NKG65-50-125/139型单级单吸离心泵为研究对象搭建试验泵系统,分别采用传统的有线振动状态监测系统与该设计的无线振动状态监测系统来对该离心泵进行试验。该设计的无线监测系统通过对水泵监测点的水平、垂直、轴向三个方向进行振动信号采集,从而得到振动信号的位移峰峰值和振动烈度值,再利用WiFi技术上传安卓上位机,与传统的有线振动采集监测系统的试验结果进行对比分析,发现两组结果整体变化趋势基本一致,数值变化都呈随着流量的稳定而逐渐减小趋势,具体数值大小差距不大。试验数据表明,所设计的无线振动状态监测系统可以满足对水泵振动监测的需求,并可取代传统的有线振动状态监测系统。

As the traditional vibration condition monitoring system has the problems such as complex wiring and signal interference,a new pump vibration state monitoring system based on wireless sensor network is proposed. The NKG65-50-125/139 single-stage single-suction centrifugal pump is selected as the research subject to establish the testing pump system,and the traditional wired vibration state monitoring system and the designed wireless vibration state monitoring system are used for the centrifugal pump test,respectively. In the designed wireless monitoring system,the vibration signals are collected from the horizontal,vertical and axial directions of the pump monitoring points to obtain their peak values of displacement and vibration intensity values;the upper computer of Android is upload by means of WiFi technology. In comparison with the experimental results of the traditional wired vibration acquisition and monitoring system,it is found that the overall variation trend of the two groups are consistent basically,the numerical change is gradually decreasing with the stability of the traffic,and the difference of the specific values are small. The experimental data show that the designed wireless vibration state monitoring system can meet the needs of pump vibration monitoring and can replace the traditional wired vibration state monitoring system.