小波变换的无缝钢轨垂向应变信号分离

Separation of vertical strain signal of seamless railway based on wavelet transform

分析钢轨垂向应变信号基线漂移产生的原因,并采用小波变换对垂向应变信号进行分解与重构,分离信号中由温度引起的应变与轮轨力产生的应变。在Matlab环境下对分布式钢轨应力检测技术与无线传感网系统数据库中垂向应变信号进行处理,结果表明,该方法可以有效地分离信号中的不同成分。

Reason causes baseline drift of the vertical strain signal are analyzed,wavelet transform is used to decompose and reconstruct signal of the vertical strain,separate the strain caused by wheel-rail force and temperature. In the Matlab environment,vertical strain signal from the distributed rail stress monitoring technology and database of wireless sensor networks system are processed. The results show that the method can separate different components in signals effectively.