基于GMM的轨道无线传感网络能量收集装置研究

Study on the Energy Harvester Based on GMM for the Railway Wireless Sensors Network

随着轨道无线传感器网络技术的推广,改善无线传感器的供电问题显的刻不容缓。研究一种基于超磁致伸缩材料(GMM)的轨道振动能量收集器,将收集器安装于钢轨与轨道板之间,收集钢轨的振动能。建立车辆轨道垂向耦合模型,将钢轨垂向位移和支反力作为能量收集器的激振源。利用超磁致伸缩材料的维拉里效应,将振动能转换为电能。经过MATLAB理论分析,能量收集器大致能收集到能量大约237.158 4 J。收集的电能足以解决无线传感器的供电问题。

With the promotion of railway wireless sensor network technology,it is urgent tosolve the problem of thepower supplying of wireless sensors.A track vibration energy harvester based on giant magnetostrictive material（GMM）is studied,the harvester is installed between the rail and the track plate,and the vibration energy of the railis collected. A vehicle-track vertical coupling model is bulit,where the vertical displacement and the reaction ofsupports of the track are used as the excitation source of energy harvester. The vibration energy can be converted in-to electrical energy with the Villari effect of the giant magnetostrictive material. The energy harvester can collectabout 237.158 4 J electricity in theory,with the computation of MATLAB. The electrical energy is sufficient for thepower supplying of wireless sensors.