振动测量与分析是进行电梯隐患或故障排查、运行舒适度评估的重要手段。介绍了可进行信号时频分析的连续小波变换（Continuous Wavelet Transform，CWT）及其逆变换计算方法、电梯轿厢三轴振动数据采集方法。将CWT计算出的小波变换系数绘制出二维云图，对轿厢垂直振动和水平振动不符合标准要求的2台曳引驱动电梯进行了时频分析。结果表明，通过CWT可直观判断出电梯异常振动的加速度随频率和时间的变化规律，实现了电梯曳引系统和导向系统等异常振动源和隐患位置的快速定位。

Vibration measurement and analysis are important means for identifying hidden dangers or faults in elevators and evaluating riding comfort. The continuous wavelet transform (CWT) and its corresponding inverse transformation calculation method for signal time-frequency analysis, the three-axis vibration data acquisition method for elevator car vibration were introduced. The wavelet transform coefficients calculated by CWT were visualized as two-dimensional contour maps, and time-frequency analysis was performed on two traction-driven elevators whose vertical and horizontal vibrations of the elevator car failed to meet standard requirements. The results show that the variation law of the acceleration of elevator abnormal vibration with frequency and time can be judged intuitively by CWT, and the rapid location of abnormal vibration sources and hidden dangers such as elevator traction system and guidance system can be realized.