Multi-sensor fusion direct-current equipment full-frequency signal measurement method and system

The invention provides a multi-sensor fusion direct current equipment full-frequency signal measurement method and system, and the method comprises the steps: carrying out the multi-scale wavelet decomposition of a voltage waveform of each sensor in direct current equipment, and obtaining the voltage waveforms of each sensor under different scales and frequency bands; based on the voltage waveforms of the sensors under the frequency bands of different scales, combining the weight coefficients of the sensors under the corresponding frequency bands to obtain the voltage waveforms of the sensors under the frequency bands of the same scale; performing waveform fusion on the voltage waveforms of the different sensors under the same frequency band by using adaptive filtering to obtain fused voltage waveforms of the same scale under different frequency bands; performing waveform synthesis based on the fused voltage waveforms under different frequency bands to obtain a full-frequency-band voltage waveform of the dire